Surgical handpiece for measuring depth of bore holes and related accessories

Abstract

To provide a surgical handpiece for measuring the depth of bore holes and related accessories thereof.SOLUTION: A drill bit comprises a shank extending along an axis and an interface comprising at least one outermost drive portion spaced at a first interface distance from the axis. The drill bit further comprises a resilient arm extending from a proximal end of the shank. The resilient arm comprises an outer arm surface facing away from the axis and a retention surface facing toward a distal end of the shank. The retention surface may be radially aligned about the axis with respect to the outermost drive portion. The resilient arm is movable between: a first position where the outer arm surface is spaced from the axis at a first arm distance greater than the first interface distance, and a second position where the outer arm surface is spaced from the axis at a second arm distance less than or equal to the first interface distance.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] [CROSS REFERENCE TO RELATED APPLICATIONS] This patent application is a continuation of U.S. patent application Ser. No. 15 / 887,507, filed Feb. 2, 2018. No. 62 / 548,357, filed Aug. 21, 2017; No. 62 / 618,134, filed Jan. 17, 2018, and Priority and Claims to U.S. Provisional Patent Application No. 62 / 546,760, filed Aug. 17, 2007 and all benefits thereof, the entire disclosures of which are incorporated herein by reference. Use.

[0002] The present disclosure generally relates to surgical handpieces and related accessories capable of measuring bore depth. Regarding. [Background technology]

[0003] Traditional medical and surgical procedures typically involve the surgeon reaching and manipulating the surgical site. It involves the use of surgical tools and instruments that allow manipulation of the surgical site. to address a variety of musculoskeletal conditions including trauma, sports injuries, degenerative diseases, and joint reconstruction. Rotary instruments such as hand-held drills are commonly utilized in connection with orthopedic surgical procedures. In procedures where drills or similar surgical instruments are employed, actuators (e.g., The use of rotational torque selectively generated by a motor (motor) allows for the removal of removable drill bits or rotates other surgical attachments at different speeds. The associated drill bits are typically disposable components that are replaced after each procedure. This is realized as a Summary of the Invention

[0004] As an aid in the performance of a variety of different types of medical and / or surgical procedures, Although hand-operated surgical instruments and drill bits are commonly utilized, there are few known techniques in the art that allow such instruments to be easily inserted. There is a continuing need for improvements in such drill bits and handheld surgical instruments. [Brief description of the drawings]

[0005] [Figure 1] FIG. 1 is a perspective view of a surgical handpiece assembly shown having a drill bit and a tip protector, according to one configuration, and a surgical handpiece system including a measurement module. [Diagram 2] FIG. 2 is a partially exploded perspective view of the surgical handpiece system of FIG. 1 with the end effector assembly removed from the surgical handpiece assembly and the tip protector spaced from the distal cutting tip of the drill bit, and with the measurement module, drive cannula, and release assembly spaced from the handpiece housing assembly. [Diagram 3] FIG. 3 is a partially exploded perspective view of a portion of the surgical handpiece assembly of FIGS. 1 and 2 with the drive cannula and release assembly shown separated from the phantom outline of the handpiece housing assembly to show the actuator assembly; [Figure 4] FIG. 4 is a partial isometric cross-sectional view taken along line 4-4 of FIG. 1. [Diagram 5] FIG. 5 is an enlarged detail view of the area 5 in FIG. 4. [Figure 6] FIG. 6 is a longitudinal cross-sectional view of the surgical handpiece assembly of FIGS. 1-5 with the end effector assembly removed. [Figure 7A] FIG. 7 is an enlarged detail view at 7 in FIG. 6 showing the measurement module, drive cannula, release assembly, and a portion of the actuator assembly within the handpiece housing assembly. [Figure 7B]7B is another enlarged detail view of the surgical handpiece system of FIGS. 1 and 7A showing a pair of resilient arms located at the proximal end of the drill bit approaching a proximal portion of the drive cannula. FIG. [Figure 7C] FIG. 7C is another enlarged detail view of the surgical handpiece system of FIGS. 7A and 7B showing the resilient arms of the drill bit engaging the seating surfaces of the proximal portion of the drive cannula and bending toward each other; [Figure 7D] 7A-7C showing another enlarged detail view of the surgical handpiece system with the resilient arms of the drill bit disposed within a bore in the proximal portion of the drive cannula, the drill bit having a shank with a proximal end from which the resilient arms extend, a stopper coupled to the shank, and an interface coupled to the shank and interposed between the stopper and the proximal end. [Figure 7E] FIG. 7B is another enlarged detail view of the surgical handpiece system of FIGS. 7A-7D, showing the resilient arm of the drill bit further disposed within the bore of the proximal portion of the drive cannula, with the interface of the drill bit positioned within the bore of the proximal portion of the drive cannula adjacent the seating surface. [Figure 7F] FIG. 7B is another enlarged detail view of the surgical handpiece system of FIGS. 7A-7E showing the resilient arms of the drill bit resiliently bending away from each other with each resilient arm having a retaining surface abutting a locking surface on the proximal portion of the drive cannula and the stop of the drill bit abutting a seating surface on the proximal portion of the drive cannula to retain the interface within the bore. [Figure 7G] FIG. 7B is another enlarged detail view of the surgical handpiece system of FIGS. 7A-7F showing the release member of the release assembly engaging the resilient arms and bending the resilient arms toward each other to facilitate movement of the retaining surfaces of the resilient arms out of engagement with the locking surfaces of the proximal portion of the drive cannula. [Figure 7H]FIG. 7B is another enlarged detail view of the surgical handpiece system of FIGS. 7A-7G showing the release member of the release assembly further engaging the resilient arm and bending the retaining surface of the resilient arm to release it from engagement with the locking surface of the proximal portion of the drive cannula. [Figure 7I] FIG. 7B is another enlarged detail view of the surgical handpiece system of FIGS. 7A-7H showing the release member of the release assembly disengaging from the resilient arm so that the resilient arm is disposed within the bore of the proximal portion of the drive cannula adjacent but not in contact with the locking surface. [Figure 8] FIG. 7I is an exploded perspective view of the drive cannula of FIGS. 2 to 7I. [Figure 9] FIG. 7I is a partial exploded view of the actuator assembly of FIGS. 3-7I showing a motor with a drive gear and a gear set with an output hub. [Figure 10] FIG. 10 is an exploded perspective view of the gear set of FIG. [Figure 11] FIG. 11 is another exploded perspective view of the gear set of FIGS. 9 and 10 . [Figure 12] FIG. 7I is a partial exploded view of the release assembly of FIGS. 1-7I, showing the release subassembly spaced apart from the retainer and housing adapter. [Figure 13] FIG. 13 is an exploded perspective view of the release subassembly of FIG. 12. [Figure 14] FIG. 14 is another exploded perspective view of the release subassembly of FIGS. 12 and 13. [Figure 15A] FIG. 12 is a perspective view of a proximal portion of the drive cannula shown in FIGS. 2-8 positioned adjacent to the output hub of the gear set shown in FIGS. 3-7I and 9-11. [Figure 15B] FIG. 15I is a perspective view of the proximal portion and output hub of the drive cannula of FIG. 15A assembled for co-rotation by splined engagement, shown positioned adjacent to a resilient arm extending from the proximal end of the shank of the drill bit of FIGS. 1, 2, 4, 5, and 7B-7I. [Figure 15C]FIG. 15C is another perspective view of the proximal portion of the drive cannula, output hub, and drill bit of FIG. 15B, showing the resilient arms of the drill bit disposed in abutment with the locking surfaces of the proximal portion of the drive cannula; [Figure 15D] FIG. 13 is a perspective view of another proximal portion of the drive cannula positioned adjacent to another output hub. [Figure 16] FIG. 15C is a top view of the proximal portion of the drive cannula and output hub assembled as shown in FIG. 15B. [Figure 17A] 17 is a cross-sectional view taken along line 17-17 of FIG. 16 showing the proximal portion of the drive cannula disposed within the output hub as shown in FIG. 15B. [Figure 17B] FIG. 17B is another cross-sectional view of the proximal portion of the drive cannula and output hub of FIG. 17A, showing the resilient arms of the drill bits of FIGS. 1, 2, 4, 5, 7B-7I, 15B, and 15C disposed within a bore in the proximal portion of the drive cannula. [Figure 17C] FIG. 17D is another cross-sectional view of the proximal portion of the drive cannula, output hub, and drill bit of FIG. 17B, showing the resilient arms of the drill bit disposed in abutment with the locking surfaces of the proximal portion of the drive cannula, as shown in FIG. 15C. [Figure 18A] 18 is a cross-sectional view taken along line 18-18 of FIG. 16, showing the bore profile of the proximal portion of the drive cannula. [Figure 18B] FIG. 18A is another cross-sectional view of the proximal portion of the drive cannula of FIG. 18A , showing the resilient arms of the drill bit of FIGS. 1, 2, 4, 5, 7B-7I, 15B, and 15C disposed within and abutting the bore in the proximal portion of the drive cannula, with the drill bit positioned as shown in FIG. 17B . [Figure 18C] 18C is another cross-sectional view of the proximal portion of the drive cannula and drill bit of FIG. 18B showing the interface disposed within the bore of the proximal portion of the drive cannula. [Figure 19A] 19 is a cross-sectional view taken along line 19-19 of FIG. 16 showing the splined engagement between the proximal portion of the drive cannula and the output hub adjacent the locking surface of the proximal portion of the drive cannula. [Figure 19B] FIG. 13 is another cross-sectional view of the proximal portion of the drive cannula and the output hub. [Figure 19C] FIG. 19C is another cross-sectional view of the proximal portion of the drive cannula and output hub of FIGS. 19A and 19B, showing a portion of the resilient arm of the drill bit disposed within and abutting the bore in the proximal portion of the drive cannula with the drill bit positioned as shown in FIG. [Figure 20] 1, 2, 4, 5, 7B-7I, 15B, 15C, 17B, 17C, 19B, and 19C, showing additional details of the resilient arms, interface, and stopper adjacent the proximal end of the shank. [Figure 21] FIG. 21 is another partial perspective view of the portion of the drill bit shown in FIG. 20. [Figure 22] FIG. 22 is a left side view of the portion of the drill bit shown in FIGS. 20 and 21. [Diagram 23] FIG. 23 is a top view of the portion of the drill bit shown in FIGS. 20 to 22. [Figure 24A] 1, 2, 4, 5, 7B-7I, 15B, and 15C and a partial perspective view of the proximal portion of the drive cannula of FIGS. 15A and 15B, showing the interface of the drill bit misaligned with the bore in the proximal portion of the drive cannula. [Figure 24B] FIG. 24B is another partial perspective view of the drill bit and proximal portion of the drive cannula of FIG. 24A, showing the interface of the drill bit later aligned with the bore of the proximal portion of the drive cannula. [Diagram 25] FIG. 13 is a partial perspective view of another drill bit configuration shown having a single resilient arm. [Figure 26] FIG. 26 is another partial perspective view of the drill bit configuration shown in FIG. 25. [Figure 27] FIG. 13 is a partial perspective view of another drill bit configuration shown having three resilient arms. [Figure 28]FIG. 28 is a partial longitudinal cross-sectional view of the drill bit configuration shown in FIG. 27, shown having a cannulated shank. [Figure 29] FIG. 15D is a schematic front view of the proximal portion of the drive cannula, output hub and drill bit positioned as shown in FIG. 15C, showing the arrangement of the locking surfaces of the proximal portion of the drive cannula bounded by one another by a splined engagement between the proximal portion of the drive cannula and the output hub, further showing the profile of the interface of the drill bit by a dashed line disposed within the bore of the proximal portion of the drive cannula, and further showing the arrangement of the resilient arms by dashed and dotted lines showing the abutment with the locking surfaces of the proximal portion of the drive cannula and the radial alignment of the retaining surfaces of the resilient arms to the profile of the interface. [Diagram 30] 30 is another schematic front view of the proximal portion of the drive cannula and output hub of FIG. 29 in a configuration in which the drill bit has a resilient arm sized, shaped and positioned in abutment with a locking surface on the proximal portion of the drive cannula. [Diagram 31] FIG. 31 is another schematic front view of the proximal portion and output hub of the drive cannula of FIGS. 29 and 30 in a configuration where the drill bit has an interface with a generally rectangular profile. [Diagram 32] FIG. 32 is another schematic front view of the proximal portion and output hub of the drive cannula of FIGS. 29-31 in a configuration in which the drill bit has an interface having a generally star-shaped profile. [Diagram 33] FIG. 33 is another schematic front view of the proximal portion and output hub of the drive cannula of FIGS. 29-32 in a configuration in which the drill bit has an interface with an irregular profile. [Diagram 34] FIG. 3 is a partial perspective view of the end effector assembly of FIGS. 1 and 2 , showing a distal cutting tip of a drill bit disposed within a tip protector; [Diagram 35] FIG. 35 is a perspective view of a tip protector of the end effector assembly shown in FIGS. 1, 2 and 34. [Diagram 36] FIG. 36 is a cross-sectional view taken along line 36-36 in FIG. [Figure 37]FIG. 13 is a perspective view of another tip protector configuration of the end effector assembly. [Figure 38] FIG. 38 is a cross-sectional view taken along line 38-38 in FIG. 37. [Figure 39] FIG. 13 is a perspective view of another tip protector configuration of the end effector assembly. [Diagram 40] FIG. 40 is a cross-sectional view taken along line 40-40 in FIG. 39. [Diagram 41] FIG. 13 is a perspective view of another tip protector configuration of the end effector assembly. [Diagram 42] FIG. 42 is a cross-sectional view taken along line 42-42 in FIG. [Diagram 43] FIG. 13 is a perspective view of another tip protector configuration of the end effector assembly. [Diagram 44] FIG. 44 is a cross-sectional view taken along line 44-44 in FIG. [Diagram 45] FIG. 13 is a perspective view of another tip protector configuration of the end effector assembly. [Figure 46] FIG. 46 is a cross-sectional view taken along line 46-46 in FIG. [Figure 47] FIG. 2 is a perspective view of a surgical attachment module adjacent to a surgical handpiece assembly. [Figure 48] FIG. 48 is another perspective view of the surgical attachment module adjacent to the surgical handpiece assembly of FIG. 47. [Figure 49] FIG. 49 is a partial isometric cross-sectional view of a surgical attachment module coupled to the surgical handpiece assembly of FIGS. 47 and 48 taken generally along a longitudinal axis. [Figure 50] FIG. 50 is a partial isometric cross-sectional view of the surgical handpiece assembly of FIGS. 47-49 taken generally perpendicular to the longitudinal axis. [Figure 51] FIG. 51 is a partial isometric cross-sectional view of a surgical attachment module coupled to the surgical handpiece assembly of FIGS. 47-50, taken generally perpendicular to the longitudinal axis. [Figure 52] FIG. 2 is a perspective view of a measurement module adjacent to a surgical handpiece assembly. [Diagram 53]FIG. 53 is another perspective view of the measurement module adjacent to the surgical handpiece assembly of FIG. 52. [Figure 54] 54 is a partial isometric cross-sectional view of a measurement module coupled to the surgical handpiece assembly of FIGS. 52 and 53 taken generally along the longitudinal axis. FIG. [Figure 55] 13 is a perspective view of another measurement module adjacent to a surgical handpiece assembly. FIG. [Figure 56] FIG. 56 is another perspective view of the measurement module adjacent to the surgical handpiece assembly of FIG. 55. [Figure 57] 57 is a partial isometric cross-sectional view of a measurement module coupled to the surgical handpiece assembly of FIGS. 55 and 56 taken generally along the longitudinal axis. FIG. [Figure 58] 58 is an enlarged detailed view of a measurement module coupled to the surgical handpiece assembly of FIGS. 55-57 at marker 58 in FIG. 57. FIG. [Figure 59] 58。 FIG. 58 is a further enlarged detail view of the measurement module coupled to the surgical handpiece assembly of FIGS. 55-58 at marker 59 of FIG. 57. [Figure 60] 60 is a partial isometric cross-sectional view of a measurement module coupled to the surgical handpiece assembly of FIGS. 55-59 taken generally perpendicular to the longitudinal axis. FIG. [Figure 61] 57. A cross-sectional view of a measurement module coupled to the surgical handpiece assembly of FIGS. 55-60 taken generally along a longitudinal axis and generally perpendicular to the view of FIG. 57. [Figure 62] FIG. 62 is a partial exploded view of the measurement module of FIGS. 55-61, showing a biasing mechanism disposed within the measurement housing. [Figure 63] FIG. 63 is an enlarged view of the measurement module of FIGS. 55-62 showing a biasing mechanism disposed within the measurement housing. [Figure 64] FIG. 64 is a perspective view of the measurement module of FIGS. 55 to 63. [Figure 65] FIG. 65 is a perspective view of the measurement module of FIGS. 55 to 64, showing the bushing and illustrating in phantom the measurement housing and the depth cannula. [Figure 66] FIG. 65 is a perspective view of the measurement module of FIGS. 55-64, showing a protrusion extending from a distal portion of the bushing into the bore of the bushing. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0006] Referring to the drawings, like numbers are used throughout the several views to designate like structures. 1 and 2 illustrate operational functions associated with medical and / or surgical procedures. 1 shows a surgical handpiece system 60 for performing the steps of In the present invention, a surgical handpiece system 60 is provided for facilitating the penetration of tissue of a patient, such as bone. For this reason, the illustrated configuration of the surgical handpiece system 60 includes a surgical handpiece. an end piece assembly 62 and an end effector assembly generally designated 64. The end effector assembly 64 includes a drill bit 66 and a tip protector 68. As best seen in FIG. 2, the drill bit 66 includes a cutting tip, generally designated 70. and an insert portion generally designated 72, extending generally longitudinally along an axis AX. As will be described in more detail below, the cutting tip 70 is configured to engage tissue, and the insertion portion 72 is a releasable attachment of the drill bit 66 to the surgical handpiece assembly 62 The present invention is configured to facilitate the above.

[0007] Helps facilitate attachment of drill bit 66 to surgical handpiece assembly 62 Thus, in some configurations, the tip protector 68 may be configured to protect the cutting tip of the drill bit 66 from releasable relative to the cutting tip 70 of the drill bit 66 while concealing at least a portion of the cutting tip 70 By being secured to the surgical handpiece system 60, a user (e.g., a surgeon) can ) safely manipulates the drill bit 66 during installation into the surgical handpiece assembly 62. The end effector assembly 64 is configured to be capable of being inserted into and positioned within the surgical instrument. Once attached to the handpiece assembly 62, the tip protector 68 is attached to the drill bit 6 6 is detached from the cutting tip 70 of the surgical handpiece system 6 for penetration of tissue. 0 can be used. The configuration of the tip protection device 68 is described below with reference to Figs. 34 to 46. This is explained in more detail below.

[0008] The drill bit has been described above, and of course the description will be given in terms of the drill bit. The coupling configuration is compatible with any other type of surgical end effector, particularly a cannulated drive. It can also be used in conjunction with rotary surgical end effectors such as lilbits and rongeurs.

[0009] Referring now to FIGS. 1-19C, in a representative configuration described herein, a surgical handpiece The handpiece assembly 62 includes a battery 76 (not shown in detail). A pistol grip shaped handpiece housing releasably attached to the Assembly 74 is implemented as a hand-held drill having a handpiece housing. It is contemplated that the gripping assembly may have any suitable shape, with or without a pistol grip. The illustrated surgical handpiece assembly 62 includes a handpiece housing assembly. 74 and is used to rotate the drill bit 66. A battery 76 is employed to supply power to the surgical handpiece assembly 62. However, internal (e.g. non-removable) batteries or external console, power supplies, etc. The device may be configured in other ways, such as by tethering to a wireless LAN. Other configurations are also contemplated.

[0010] The handpiece housing assembly 74 includes a release assembly (described in more detail below). The proximal region is adjacent to the bridge 150, and the distal region is opposite the proximal region. Unless otherwise specified, "proximal" refers to the position that the user "Distal" is understood to mean the side on which the user holds the It is understood to mean the side away from the side that holds the handpiece housing assembly. .

[0011] In the illustrated configuration, a battery 76 or other power source powers the user input device 80 and the actuator. A controller 78 (see FIG. 6) is disposed in communication with a controller assembly 82 (see also FIG. 3). 1. The user input device 80 and actuator assembly Each of the conduits 82 is supported by the handpiece housing assembly 74. The controller 78 drives an actuator assembly 82 in response to actuation of a user input device 80. In the illustrated configuration, a user input device 8 0 has a triggered configuration and responds to activation by a user (e.g., a surgeon). In addition, the controller 78 and the sensor 76 are connected by electrical signals generated by magnets and Hall effect sensors. To this end, the surgeon can actuate the user input device 80 to connect the surgical handpiece assembly to the surgical handpiece assembly. When the assembly 62 is operated, the controller 78 supplies the actuator Assembly 82, which drives the drill bit, as described in more detail below. A rotational torque is generated that is used to rotate the actuator 66 or other surgical end effector. Those skilled in the art will appreciate that the handpiece housing assembly 74, battery 76, The controller 78 and the user input device 80 may each be modified without departing from the scope of this disclosure. They can also be configured in many different ways to facilitate the generation of rotational torque without requiring any be.

[0012] As best seen in FIG. 9, the actuator assemblies 82 generally each include a hand A motor 84 and gear set 86 are supported within the handpiece housing assembly 74. The motor 84 responds to commands, signals, etc. received from the controller 78 to generate rotational torque. As best seen in FIG. 6, motor 84 is configured to selectively generate a A rotor cannula 8 supported for rotation about an axis AX by a pair of bearings 90. 8. A drive gear 92 disposed adjacent to the gear set 86 (see FIG. 9) drives the rotor crab. The gear set 86 is connected to the gear wheel 88 and rotates simultaneously with the gear wheel 88, which transmits the rotational torque to the gear set 86. For this reason, in the illustrated configuration, the Thus, the gear set 86 is realized as a two-stage compound planetary arrangement, typically with, among other things, a bearing 90, one or more retaining clips 98, washers 100, and / or A ring gear housing 94 is provided which rotatably supports the output hub 96 via a seal 102 . The ring gear housing 94 is coupled to the motor housing 85 of the motor 84. However, other configurations of gear set 86 are contemplated. For example, a surgical handpiece assembly The present invention relates to a motor and a gear set as described in International Patent Application Publication No. WO2007002230. may be used and is incorporated herein by reference.

[0013] Continuing to refer to FIGS. 10 and 11, in the illustrated configuration, the output of gear set 86 The hub 96 is connected to a shaft 108 and, in some configurations, to the shaft 108 and planetary gears 102. The three planetary gears 106 are supported by a bush 110 interposed between the planetary gears 106 and the The planetary gears 106 are connected to the ring gear housing 94 and the thick The sun gears 112 are disposed in meshing engagement with their respective shafts. A second bearing 108 supports three additional planetary gears 106 via bushings 110. These additional planetary gears 106 also rotate simultaneously with the ring gear 104. The housing 94 is disposed in meshing engagement with the drive gear 92 of the motor 84. Therefore, when the driving gear 92 is rotated by the operation of the motor 84, 15A to 15C and 17A to 19C. As will be explained in more detail below in connection therewith, the output hub 96 rotates simultaneously with the drill bit 66. Those skilled in the art will appreciate that actuator assembly 82 is within the scope of this disclosure. Other arrangements are possible without departing from the scope of the present invention. A complex mechanism for adjusting the rotational speed and torque between the drive gear 92 of the motor 84 and the output hub 96. While the illustrated actuator assembly 82 employs a planetary configuration, some configurations may be used. In the present embodiment, other types of gear sets 86 may be used. The actuator assembly 82 shown in the figure employs an electric brushless DC motor. However, other types of prime movers may be utilized. Other configurations are contemplated.

[0014] As described above, the rotational torque generated by the motor 84 causes the output hub 96 to rotate. However, this rotates simultaneously with the drill bit 66. For this reason, the most As can be seen, the surgical handpiece assembly 62 includes an actuator assembly 8. 2, generally extending through the various cannulated components of the gear set 86. It further includes a drive cannula 114 that is splined to the hub 96. As will be described, the drive cannula 114 couples the drill bit 66 and the surgical handpiece assembly. The drive cannula 1 is configured to facilitate releasable attachment with the drive cannula 62. 14 generally comprises a proximal portion 116, a distal portion 118, and a body portion 120. The proximal portion 116, the distal portion 118, and the body portion 120 of the tube 114 are rotated simultaneously about an axis AX. In some configurations, a portion of the drive cannula 114 116, 118, and 120 are integrally formed. The sections 116, 118, and 120 of the bracket 114 are formed separately from one another and are welded, brazed, or bonded together. Attaching, joining, or operably integrating portions 116, 118, 120 of drive cannula 114 Attached to each other by any suitable process sufficient to attach the In some of the figures shown herein, a surgical handpiece assembly is shown. The relationship of the proximal portion 116 of the drive cannula 114 to the other components of the bridge 62 is now fully understood. For clarity, the body portion 120 and the distal portion 118 have been removed. Thus, body portion 120 and distal portion 118 are disposed proximal to drive cannula 114, as shown in FIG. It will be appreciated that the drive cannula may be attached to any suitable position other than that described above. It may be of another form, or may simply be a drive element that transmits torque without a lumen. good.

[0015] The drive cannula 114 is connected to the output hub 9 adjacent to a proximal portion 116 of the drive cannula 114. 6 and bearing 90 adjacent distal portion 118 of drive cannula 114. The arrangement of the snap ring 100 and the seal 102 secures the handpiece housing It is supported for rotation about axis AX in assembly 74 (see Figures 6 and 8). As will be described in more detail below in connection with FIGS. 15A-33, the proximal portion of the drive cannula 114 Portion 116 is adapted to receive interface 124 of drill bit 66 (see FIG. 2). With the generally hexagonal bore 122 employed, the drill bit 66 and the drive crab As will become apparent from the following description, the interface The base 124 is configured to be driven outwardly from the axis AX. As best seen in FIG. 8, the body of the drive cannula 114 is 120 and distal portion 118 each have a cylindrical bore. Other configurations of the body portion 120 and distal portion 118 of the 14 may include polygonal or oval bore profiles. Bearings, snap rings, and seals may have non-cylindrical bores, such as rivets, screws, and other components. Similarly, engagement of the output member with the drive cannula / drive element may be achieved by the motor. It may take any suitable form so long as torque is transmitted from the drive cannula / drive element to the drive cannula / drive element.

[0016] As described above, the proximal portion 116 of the drive cannula 114 engages the drill bit 66 to The drive cannula 11 is configured to rotate the drill bit 66 about an axis AX. The inner surface defining the bore 122 of the proximal portion 116 of the fourth embodiment has a groove 124 for transmitting torque to the drill bit 66. As will be described in more detail below, a distal portion of the drive cannula 114 includes a first drive section. 118 includes a distal projection, generally indicated at 126, which supports rotation of the drill bit 66. When the surgical handpiece assembly 62 is utilized in connection with any application other than and a second drive portion arranged to facilitate torque transfer. As best seen in FIGS. 2 and 8, distal projection 126 extends distally and generally along axis AX. 2 and 3, extending parallel to each other and defining the distal end of drive cannula 114. In yet another configuration, the distal projection 126 extends perpendicular to the axis AX. AX. Extending at an oblique angle between vertical and horizontal to AX. In one configuration, distal projection 126 is It acts as a driving dog / torque transfer feature that transfers torque through an interference coupling. Specifically, in the above-described configuration, the drive cannula 114 includes a distal portion Many different types of protrusions 118 may be configured to simultaneously engage and rotate with the distal protrusions 126. Surgical attachments, tools, modules, end effectors, etc. are all included in the surgical handpiece. The base assembly 62 is configured to rotate, drive, or otherwise move. However, this allows for the same results in a great many medical and / or surgical procedures. The surgical handpiece assembly 62 is then available. The distal portion 1 of the drive cannula 114 is More details regarding 18 are provided below. However, in some configurations, Different configurations of the moving cannula 114 allow the surgical handpiece assembly 62 to In a configuration dedicated to drill bit 66, the distal end of drive cannula 114 It is contemplated that distal protrusion 126 may be omitted at portion 118.

[0017] 1, 2, 4, and 6, a surgical handpiece system 60 is shown. The illustrated configuration further includes a measurement module, generally designated 128, which is piece assembly 62 to provide the surgeon with a measurement function during use. For this purpose, the measurement module is configured to provide a The cannula 128 generally comprises a housing 130, a guide bushing 132, and a depth cannula 133. 4, a displacement sensor assembly 136, and a rotatable gear 146. In this configuration, the housing 130 is releasably attached to the surgical handpiece assembly 62. In another configuration, the measurement module 128 can be mounted in the handpiece housing. Alternatively, the housing assembly 74 may be releasably attached to the housing assembly 74 in a particular configuration. The measurement module may include one or more buttons that control the functions of the measurement module. The measurement module 128 may be connected to the handpiece housing assembly 74. The releasable attachment arrangement is discussed in more detail below. Collectively, the various components of the measurement module 128 are illustrated in FIG. The housing 130 shown in FIG. 6 is a pair of housings that are integrally connected or attached. 138, which is formed as a measuring component 138 and which can be disassembled to reveal the measuring module 128. The housing may be configured to facilitate cleaning or repair. The guide component 138 and the guide bush 132 are connected to the housing component 1 A notch formed in the guide bushing 132 that fits into a web or rib formed in the guide bushing 38. The bearings are secured to the bearings by a pair of screws (not shown in detail) to prevent relative axial and rotational movement between the bearings. For example, the guide bush 132 is provided with a correspondingly shaped mechanism configured as follows: While stabilizing the frame 138, press the button 135 (FIG. 62 and FIG. 6 4) is depressed. 63 and 65). The wings 133 of the guide bush 132 are , may be present in one or more recesses in the measurement housing 138. The wheel 132 further includes a window 142 for use with a gear 146, as described in more detail below. Prepare for.

[0018] The depth cannula 134 is disposed within the guide bushing 132 and is aligned along the measurement axis MX. The measurement module 128 is supported for translational movement within the surgical handpiece assembly. When mounted on a bridge, the measurement axis MX is aligned coaxially with the axis AX. Optionally, an elongated concave slot 143 (partially shown in FIG. 2) may be provided laterally across the depth cannula 134. Although not specifically shown in the present specification, the thin The elongated concave slot 143 is supported by the housing 130 and is aligned with the guide bush 132. The movable stop element is adapted to receive a similarly extending movement stop element through an opening formed laterally in the side. This configuration allows the depth cannula to be positioned relative to the guide bushing 132. 134 can be extended or retracted axially and the depth about the measurement axis MX This helps both to prevent rotation of the cannula 134. The measurement module 128 may measure the depth cannula in other ways without departing from the scope of this disclosure. It is also possible to configure the actuator 134 to limit or prevent movement.

[0019] The depth cannula 134 may include a plurality of proximal and distal ends 136 extending along at least a portion of the length of the depth cannula 134. The guide bushing 132 is arranged in a linear fashion and meshes with a gear 146 disposed adjacent the distal end of the guide bushing 132. The guide further comprises a plurality of rack teeth 144 disposed in mating engagement. The window 142 of the bushing 132 is disposed adjacent to the gear 146 so as to allow the gear 146 to rotate. The rack teeth 144 and the gear 144 are aligned such that the rotation and depth movements of the cannula 134 are directly proportional. 6. The displacement sensor assembly 136 is 1, which responds to the rotation of gear 146 as a result of the axial movement of the potentiometer , realized by a rotary encoder or the like, the position of the depth cannula 134 along the measurement axis MX Therefore, it is understood that the electrical signal representing the change in the displacement The sensor assembly 136 can enhance the functionality of the surgical handpiece system 60 . As an example, in some configurations, the displacement sensor assembly 136 is 8, and the controller 78 may be configured to control a particular drilling depth for the tissue. The motion based on the movement of the depth cannula 134, such as the deceleration of the rotation of the drill bit 66 in the The actuator 84 may be configured to cut off or adjust the drive of the actuator 84. The assembly 136 may include a display such as a display screen, one or more light emitting diodes (LEDs), or the like. By being connected to the a 148, the real-time excavation depth and the recorded maximum excavation depth can be The present invention provides the surgeon with information regarding the movement of the depth cannula 134, such as displaying the history. Other configurations are contemplated. This same information may also be conveyed to the user by a speaker. to provide audio indications of real-time dig depth, history of maximum dig depth recorded, etc. International Patent Application Publication No. WO2017 / 0407, filed September 1, 2016 No. 83 “Powered Surgical Drill With Integral Depth Gauge That Includes A Probe That The entire disclosure of “Slides Over A Drill Bit” is hereby incorporated by reference. Use.

[0020] Those skilled in the art will appreciate that the various components of the measurement module 128 may be The measurement modules 128 shown may be arranged in many different ways. The drill bit of the present disclosure is attached to the surgical handpiece assembly 62 shown. 66 compatible, but in some configurations may use different types of modules, hardware, In order to accommodate the housing, cover, etc., the measurement module is removed from the surgical handpiece assembly 62. It may also be possible to omit rule 128.

[0021] 1-3 and 12-14, a surgical handpiece assembly 6 The two illustrated configurations further include a release assembly, generally designated 150, which is shown in FIG. As will be described in more detail below in connection with FIG. 7I, the drill bit 66 may be easily removed. As shown in FIG. 12, the release assembly 150 generally comprises: It comprises a release subassembly 152 , a retainer 154 , and a housing adapter 156 . The retainer 154 and the housing adapter 156 each support the release subassembly 152. The actuator assembly 82 and the handpiece housing assembly 74 are secured to The present invention is configured to provide a method for implementing the present invention in a number of different configurations, or in a number of different ways. In some configurations, it may be incorporated into other components of the surgical handpiece assembly 62. As shown in FIGS. 13 and 14, the release subassembly of the release assembly 150 The release body 152 includes a release body 158, a washer 100, a pair of guide elements 160, and a collar 162. , a release member 164, and a cap 166. 4 and each of the spiral slots formed in the release body 158. 170 and moves along each of the color channels 172 formed in the color 162. The guide element 160 in the illustrated configuration is spherical. 4 translates distally and proximally along axis AX in response to rotation of collar 162. As will be described in more detail below, the release member 164 can be The collar 162 is configured to engage the insert 72 of the drill bit 66 in response to rotation of the collar 162. The actuator 174 defines a release surface 175. Rotation of the collar 162 causes the release portion The member 164 translates distally along the axis AX, thereby forming a surgical handpiece assembly. This facilitates removal of the drill bit 66 from the drive cannula 114 of the drill bit 62. In this configuration, the release surface 175 tapers away from the axis AX in a proximal to distal direction. Between the release body 158 and the release member 164, there are one or more washers. A biasing element, such as a compression spring (not shown), may be interposed in conjunction with the actuator 100 to bias the release member 164. The release member 164 may be biased toward the cap 166. Facilitating axial retention of the biasing and / or release member 164 relative to the release subassembly Therefore, other suitable biasing elements and / or fasteners may be employed.

[0022] As mentioned above, the drill bit 66 of the present disclosure has an axis A between the cutting tip 70 and the insert 72. Extending generally along X, the interface 124 of the drill bit 66 and the drive cannula Engagement of the guide 114 with the bore 122 in the proximal portion 116 of the guide 114 provides a guide 122 as described herein and shown in the drawings. Configured to be releasably attached to the surgical handpiece assembly 62 shown Meanwhile, the drive cannula 114 is connected to the gear set of the actuator assembly 82. 86 cooperates with output hub 96 to facilitate rotation of drill bit 66 about axis AX. In addition to the drill bit 66, the drive cannula 114, and the output hub 96, each Collaboration is explained in more detail below.

[0023] 2 and 20-24B, the drill bit 66 is generally designated 176. The shank shown extends along an axis AX between a proximal end 178 and a distal end 180. 2. The distal end 180 of the shank 176 has a helical axial extension 182 extending therefrom about an axis AX. The drill bit 66 has a groove 182 extending to the tip thereof to facilitate penetration of tissue. Also, in the illustrated configuration, the drill bit 66 may optionally include A bearing region 184 is provided coupled to the shank 176 between the proximal end 178 and the distal end 180. The bearing area 184 is located at the depth of the measurement module 128. The cannula 134 is sized to be received in the cannula 134 and rotate relative to the cannula 134. (See FIG. 4 ). Here, the bearing area 184 is essentially the same as the bearing area 182 along the length of the drill bit 66 . 176 in the illustrated configuration. A "stepped" outer region of the shank 176 having a larger diameter than the distal and proximal regions. However, it will be appreciated that the bearing area of ​​the shank 176 of the drill bit 66 184 may be configured in other ways without departing from the scope of this disclosure. Further, although described as drill bit 66 in this disclosure, drill bit 6 6 has similar features and may be replaced with another suitable end effector, such as a burr or reamer. That is, it is possible to configure it as a rotating end effector.

[0024] In the illustrated configuration, the drill bit 66 has a distal end 180 of the shank 176. 66. The cutting tip 70 of the cutter 66 corresponds to or is disposed adjacent to the cutting tip 70. It is, of course, formed as a single component so that the The drill bit 66 has a cutting tip 70 that is a separate component from the shank 176. 176 and later attached to the distal end 180 of the shank 176. Other methods of manufacture are possible. Nevertheless, for clarity and consistency, The cutting tip 70 described above, in the illustrated configuration described herein, is located proximal to the shank 176. Corresponding to end 180.

[0025] 20-23 show a releasable attachment to a surgical handpiece assembly 62, as described above. 1 generally illustrates an insert 72 of the drill bit 66 configured to facilitate installation. For this purpose, the interface 124 of the drill bit 66 is adjacent to the shank 176. The shank 176 is connected adjacent to and distally spaced from the distal end 178 of the shank 176. As will be described in more detail below, the interface 124 of the shank 176 is The surgical handpiece 62 is attached to the surgical hole 64 so that the handpiece assembly 62 can rotate the drill bit 66 during installation. To facilitate rotational locking of the drill bit 66 to the endpiece assembly 62, The drill bit 66 is axially inserted into the surgical handpiece assembly 62. To lock the drill bit 66 in the forward direction, the drill bit 66 is fitted with a stop 186 and one end generally designated 188. The stopper 186 further comprises a resilient arm or a plurality of resilient arms. 176 and is connected to the shank 176 adjacent and distally spaced from the 7F and 17C. As shown, stop surface 190 is configured to conform to a correspondingly shaped tapered portion of proximal portion 116 of drive cannula 114. The drill bit 66 is inserted into the surgical handpiece assembly 62 by contacting the bearing surface 192. The bearing surface 19 is shaped and positioned to limit the distance the bearing surface 19 can travel axially. 2 to assist in guiding the drill bit 66 through the bore 122 of the drive cannula 114. Therefore, the transition surface may be tapered from the distal direction to the proximal direction towards the axis AX. Of course, the drill bit 66 of the present disclosure may be attached to the surgical handpiece assembly 62. It is possible to configure the device in other ways sufficient to limit the distance that the device can advance axially into the As will be described in more detail below, resilient arm 188 is adapted to move relative to drive cannula 114. The drill bit 66 is configured to be axially held by the drill bit 66 .

[0026] 22 and 23, the interface 124 of the drill bit 66 is Extending along an axis AX between an interface distal end 194 and an interface proximal end 196. For clarity and consistency, the interface distal end 194 is referred to herein as and interface proximal end 196 is generally consistent between interface 124 and The cross-sectional profile of the drill bit 66 is defined as a set of discrete locations along the length of the drill bit 66. However, in other configurations, the interface distal end 194 and the interface It is contemplated that the interface proximal end 196 may be defined in other ways. The faces 124 are spaced apart along the shank 176, such as the cylindrical portion of the shank 176 extending therebetween. The cross-sectional profiles may be different and may be axially separated. It is also contemplated that the device may have multiple discrete "interface regions" each having a respective Other configurations are possible.

[0027] In the configuration of drill bit 66 shown in FIGS. 22 and 23, the interface proximal A transition region 198 extends from the end 196 to the proximal end 178 of the shank 176. The transition region 198 is at the proximal end 176 of the shank 176, which has a generally frustoconical profile. 8, by effectively chamfering or "rounding" the portion of interface 124 adjacent The interface defines a proximal end 196. For clarity and consistency, the The proximal end 178 of the shank 176 narrows to a transition region 198 from which the resilient arms 188 extend. Alternatively, the resilient arm 188 may extend from the proximal end 178 of the shank 176. Each arm 176 extends to a corresponding arm end 200, and a proximal end 178 of the shank 176 extends from the arm end 200. The resilient arm 188 is described in more detail below.

[0028] As described above, the proximal portion 11 of the drive cannula 114 of the surgical handpiece assembly 62 The illustrated configuration of six bores 122 includes six bore flats 122F and six bore corners 122C. C (see FIG. 18A), and The interface 124 of the drill bit 66 is received in the bore 122 to interface with the drill bit 66 and the drive shaft 126. The actuator 114 is configured to facilitate simultaneous rotation with the actuator cannula 114 about the axis AX. Therefore, the interface 124 of the drill bit 66 has a first interface distance 204 At least one outermost drive part 202 is provided, which is spaced apart from the axis AX (see FIGS. 29 to 33). In some configurations, the outermost drive 202 of the interface 124 is 2, is defined by an outer drive surface 206 that does not face the axis AX. For ease of reference and consistency, the first interface distance 204 and the outermost drive 202 are The edge, vertex, point, or surface of the interface 124 that is the furthest away from the axis AX. In some configurations, the interface 124 is defined by a first interface a first outermost drive part spaced from the axis AX by an interface distance; and a second interface a second outermost drive part spaced apart from the axis AX by a distance These components define a maximum drive dimension 208 of the 124 (shown diagrammatically in FIGS. 29-33). In this configuration, the maximum actuation dimension 208 is the “widest” portion of the interface 124. The first and second interface distances include the first and second outermost drive distances for the axis AX. The first and second outermost drive parts are spaced apart from the axis AX so that the arrangement of the drive parts is symmetrical. However, in other configurations, the first and second outermost The first and second interfaces are arranged so that the arrangement of the drives can be asymmetric with respect to the axis AX. The base distances do not have to be equal to each other.

[0029] In some configurations, the interface 124 has a third interface distance of 2 12, at least one outer non-driven drive part 210 spaced apart from the axis AX (FIGS. 29- 33). Additionally, in some configurations, the interface 124 The outer non-drive portion 210 is defined by an outer non-drive surface 214, which may be of any of several configurations. In the construction, the interface surface may be defined as a planar interface surface. For clarity and consistency, the third interface distance 212 and the outer non-driven portion 2 10 is a part of an edge, vertex, point, or surface of an interface 124 that is closest to an axis AX. In some configurations, the interface 124 a first outer non-driving portion spaced from the axis AX by a third interface distance 212; a second outer non-driving portion spaced from the axis AX by an interface distance 212 of 4. This defines a minimum interface dimension 216 of the interface 124 (see FIG. 29 to 33). In these configurations, the minimum interface dimension is 21 6 is the "narrowest" portion of interface 124. The third and fourth interfaces The face distance is determined so that the first and second outer non-driven parts are symmetrically positioned with respect to the axis AX. the first and second outer non-driven portions each include a common distance spaced from the axis AX, However, in other configurations, the arrangement of the first and second outer non-driven parts is such that the axis AX is The third and fourth interface distances are equal to each other so that the third and fourth interface distances can be asymmetric with respect to each other. Furthermore, the two outer non-driving parts 210 are connected to the two outermost driving parts 210 around the axis AX. 02 in the radial direction. However, as will become clear from the following description, The face 124 is received in the bore 122 of the proximal portion 116 of the drive cannula 114. It is also possible to configure it in other ways sufficient to rotate.

[0030] As an example of the features of the interface 124 described above, FIG. 18C and FIGS. 20 to 24B The interface of the drill bit 66 shown in FIG. The interface 124 includes a total of six outermost driving sections 202 and a total of six outer non-driving sections 210. The six outermost drives 202 have a generally circular hexagonal profile. Each of the drive surfaces 206 is bounded by a circular outer drive surface 206 so as to define a corner 218. In this configuration, the maximum drive dimension is between the apexes of the two diametrically opposed corners 218. 208 are defined. Furthermore, in this configuration, six outer non-driving portions 210 are each , is defined by a substantially flat outer non-drive surface 214 to define a plane 220. Therefore, in this configuration, there is a minimum offset between the midpoints of the two diametrically opposed planes 220. An interface dimension 216 is defined.

[0031] As will be described in more detail below in conjunction with FIGS. 29-33, the drill bit 66 of the present disclosure The interface 124 has enough different axially extending members 126 to be received in the bore 122 and rotate simultaneously. It is also possible for the cross-sectional profile or configuration to be different from that shown in Figs. 7C to 7I, 15B, 17C, 18B, 18C, and 20 to 30. The illustrated configuration of the interface 124 shown is based on the profile of the bore 122 as described above. Although the hexagonal profile is generally circular and complementary to the hexagonal profile of ... It is also possible to construct the shape of the polygonal shape of the object in other generally polygonal shapes such as a rectangle (see FIG. 31) or a star (see FIG. 32). profile, irregular polygonal shape, and / or the proximal portion 116 of the drive cannula 114. Other profiles and and / or shape (see FIG. 33), but are not limited to these.

[0032] As mentioned above, the drill bit 66 of the present disclosure has a plurality of proximal ends 178 extending from the shank 176. The drill bit includes one or more resilient arms 188 extending to the ends 200 of the arms. The resilient arm 188 of the drill bit 66 is adapted to, among other things, engage with the stop surface 190 of the drill bit 66 when the stop surface 190 of the drill bit 66 engages with the drive shaft 186 . When the surgical handpiece assembly abuts against the seat surface 192 of the proximal portion 116 of the needle 114, 62. As will become apparent from the following description, the resilient arm 188 is integrally formed with the shank 176 and It may be machined, bent, etc., or may be formed separately from the shank 176 and welded, A resilient arm 188 is operably attached to the shank 176 by brazing, gluing, bonding, or otherwise attaching the resilient arm 188 to the shank 176. The shank 176 may be later attached by any suitable process sufficient to It is.

[0033] 20 to 23, the illustrated configuration of the insert 72 of the drill bit 66 is The non-opposing outer arm surface 222 and the retaining surface 22 facing the distal end 180 of the shank 176. 4 and an elastic arm 188 having the same (see FIG. 23). As will be described in more detail below, the retaining surface 224 of the resilient arm 188 is AX. 7A to 7I, 15A to 19C, and 29 to 30. As will be described in more detail below in relation to 33, the resilient arm 188 is in a first position P1 ( 7B and 22) and a second position P2 (see FIGS. 7D and 7E). At the first position P1, the first inter At a first arm distance 226 that is greater than the face distance 204, the outer arm surface 222 is aligned with the axis A At the second position P2, the arm distance is smaller than the first arm distance 226. In some configurations, the second arm distance 22 is less than or equal to the first interface distance 204. At 8, the outer arm surface 222 is spaced from the axis AX. The resilient surface 222 is farther from the axis AX than any other portion of the interface 124. The flexible arm 188 is bendable about an axis AX from a first position P1 to a second position P2. and is resiliently biased toward a first position P1. As shown, this configuration provides for the release of drill bit 66 from surgical handpiece assembly 62. In some configurations, the surgical handpiece adapter is By facilitating rotation of the drill bit 66 about the axis AX upon installation in the assembly 62, 4, the interface 124 is engaged with the bore 122 relative to the drill bit 66. It also provides a self-alignment feature.

[0034] Continuing with the example above where interface 124 comprises first and second outermost drives: The retaining surface may be radially aligned with the first outermost drive portion. The outer arm surface 222 of the resilient arm 188 at is spaced from the axis AX by a first arm distance. This distance may be a first interval at which the first outermost drive part is spaced from the axis AX. In addition, the outer periphery distance of the elastic arm 188 at the second position P2 may be larger than the outer periphery distance. The side arm surface 222 may be spaced apart from the axis AX by a second arm distance, which may be: It may be smaller than the first arm distance and equal to or smaller than the first interface distance (FIG. 2 4A, see FIG. 24B, described in more detail below).

[0035] In another configuration in which the interface 124 comprises first and second outermost drives, The retaining surface does not have to be radially aligned with the first outermost drive portion. The surface may be radially aligned with the second outermost drive portion. The outer arm surface 222 of the resilient arm 188 is spaced from the axis AX by a first arm distance. In this configuration, the distance is the 1st distance that the second outermost drive part is separated from the axis AX. 2. Furthermore, the interface distance of the elastic arm 1 at the second position P2 is larger than the interface distance of the elastic arm 1 at the second position P2. The outer arm surface 222 of 88 may be spaced apart from the axis AX by a second arm distance, The distance is less than the first arm distance and less than or equal to the second interface distance.

[0036] As best seen in FIG. 23, the outer arm surface 222 of the illustrated configuration has a top view profile. The handle is generally rectangular and is disposed between the arm end 200 and the support surface 224. However, it will be appreciated that the outer arm surface 222 may be implemented in other configurations, profiles, arrangements, etc. For clarity and consistency, the outer arm surface 222 is 188 surface, face, edge, vertex, or point, the elastic arm 188 is at a first position P1. In some cases it is defined by the one furthest away from the axis AX.

[0037] 20-23, the resilient arm 188 extends distally from the arm end 200. The outer arm surface 222 further includes an inclined surface 230 extending toward the outer arm surface 222 and merging with the outer arm surface 222. The resilient arm 188 is configured to bend about the axis AX in response to engagement, contact, abutment, etc. As an example, in the illustrated configuration, the drive cannula 114 is shaped and arranged The inclined surface 230 is shaped and positioned to engage the tapered seating surface 192 of the proximal portion 116. 7C, the drill bit 66 is inserted into the surgical handpiece assembly. 62, the resilient arm 188 moves from a first position P1 to a second position P2. (Compare FIGS. 7B to 7D in turn). Similarly, in the illustrated configuration, the release member 1 64 translates distally along axis AX. 174 (FIGS. 7G and 7C). 7H), the elastic arm 188 is moved to the second position P2, 7F to 7I. comparison).

[0038] 20 to 24B, the illustrated configuration of the elastic arm 188 is 32 and a finger portion generally designated 234. In one exemplary configuration, the arm The body 232 has a generally arcuate portion that merges with the proximal end 178 of the shank 176. As best shown in FIG. 22, the arm body 232 has a straight profile. Extending away from the proximal end 178 of the shank 176. In the illustrated configuration, , is defined with respect to an axis AX, and when the resilient arm 188 is in a first position P1, The resilient arm 188 is angled at a generally vertical arm position angle 23 when the resilient arm 188 is in the second position P2. 22. However, the insertion portion 72, the driving cannula 1, and the holding surface 224 are disposed on the insertion portion 72. 14, proximal portion 116, and output hub 96. Thus, the holding surface 224 is a surface of the resilient arm 188 with respect to the axis AX when the resilient arm 188 is in the second position P2. Other arrangements or configurations are also possible, such as at non-perpendicular angles. Furthermore, in the illustrated configuration, the arm body 232 is spaced from the axis AX to the arm end 200. However, in an alternative configuration of the drill bit 66, the drill bit 66 extends generally parallel to the axis AX. In another configuration, the retaining surface 224 is attached to the resilient arm 188. 80°。 80°. However, the holding surface may alternatively be at an angle of more than 80° or less than 80° to the elastic arm. They can be arranged at any suitable angle.

[0039] The finger portion 234 of the resilient arm 188 is formed at the arm end 200 and, in the illustrated configuration, In the configuration, an outer arm surface 222, a retaining surface 224, and an inclined surface 230 are provided or As shown in FIG. 22, the finger portions 234 are generally spaced apart from the axis AX and define an outer arc. 23, the finger portion 234 has a finger width 240. 2 and defining a pair of outer finger surfaces 238 spaced apart from one another and generally perpendicular to the retention surface 224 . However, it should be understood that the finger portion 234 may have a triangular profile, a rectangular profile, or the like. Many different profiles can be used, such as square, circular, pentagonal, or other suitable profiles. It is possible to configure it in different ways.

[0040] In the illustrated configuration, the finger portion 234 is a fully-supported, fully-supported, The alignment element 242 further comprises a finger portion. 234 may be positioned at a different location on the resilient arm 188. Not all of the sex arms 188 may include an alignment element 242. As is apparent from the drawing, the alignment element 242 is inclined at least a portion of the outer arm surface 222. At least a portion of the inclined surface 230, and / or the outer arm surface 222 and the inclined surface 230 1. The arm 200 may include one or more planar arm surfaces 244 disposed adjacent to the arm 200 (FIG. 20 to 23). Here, the planar arm surface 244 is P2 and generally In some configurations, the position The alignment element 242 may include a single planar arm surface 244. The illustrated configuration of the mating element 242 comprises a generally planar arm surface 244 disposed between two planar arm surfaces 244. 2, a circumferential outer arm surface 222 is employed, but it should be appreciated that other configurations are contemplated. As a typical example, the outer arm surface 222 may be a non-planar arm surface formed in a wedge shape or the like. When the resilient arm 188 is in the second position P2, the interface 12 4. In a state where the outermost drive unit 202 is radially aligned with one of the four outermost drive units 202 (e.g., the same It is also possible to realize the shape of the vertices as discrete edges or points arranged in a straight line. In some configurations, such as those shown in the drawings, the alignment element 242 is 8 is in the second position P2. Other configurations are contemplated. For example, the configuration shown in FIG. 32. A star-shaped profile with multiple drive lobes 245 spaced around X 124 is configured, the alignment element 242 slightly tilts one of the drive lobes 245 profiles that at least partially duplicate or complement each other (e.g. triangular profiles)

[0043]

[0041] Alignment element 242 is aligned with axis AX when attached to surgical handpiece assembly 62. In response to a force applied to the drill bit 66 along the When the drill bit 66 moves from the first position P1 to the second position P2, at least a portion of the drill bit 66 moves about the axis AX. More specifically, in Figs. 24A and 24B, As shown, in response to engagement with tapered seating surface 192 of proximal portion 116 of drive cannula 114. When the resilient arm 188 moves toward the second position P2, the alignment element 242 One or more portions of the resilient arm are disposed in contact with the tapered seating surface 192. When the arm 188 is bent away from the first position P1, the potential energy As the force is stored, the drive force is released from the tapered seating surface 192 of the proximal portion 116 of the drive cannula 114. When alignment element 242 advances into bore 122 of proximal portion 116 of cannula 114, In this case, the tapered seating surface 192 contacts one or more portions of the alignment element 242. facilitating at least partial rotation of drill bit 66 relative to drive cannula 114. Therefore, when the elastic arm 188 enters the bore 122, the bore corner 122C is The outer arm surface 222 biased against one of the outer arm surfaces 222 causes the drill bit 66 to rotate about the axis AX. At the point where the drill bit 66 rotates, it “self-aligns” with the bore 122 and Each of the planar arm surfaces 244 of the mating elements 242 engages with an adjacent bore flat 122F. (compare Figures 24A and 24B).

[0042] In this configuration, the resilient arm 188 is in a first position of a first arm distance relative to the axis AX. from position P1 indirectly to a second position P2 (FIG. 24B) at a second arm distance relative to axis AX. More specifically, the elastic arm 188 moves from the first position P1 to the axis AX. 24A, the second The first arm distance with respect to the axis AX is the distance from the outermost drive 202 and the axis AX. The third arm distance for is the first arm distance and the first interface distance 20 4. The second arm distance with respect to the axis AX may be smaller than the third arm distance and may be less than or equal to the first interface distance 204.

[0043] When the resilient arm 188 is disposed in the third position, the outer arm surface 222 contacts the bore flat. 122F. The resilient arm 188 is biased away from the axis AX. Therefore, the outer arm surface 2 from the bore flat 122 to one of the bore corners 122C is 22 causes the resilient arm 188 to move from the third position (FIG. 24A) to the second position (FIG. 24B) to rotate the drill bit into alignment with the bore. However, the drill bit must already be aligned with the bore and axially aligned prior to insertion into the bore. When a force is applied to the drill bit 66 along the axis AX, the drill bit 66 moves from the first position P1 to the second position P2. The elastic arm can move directly to P2.

[0044] When the elastic arm 188 is in the second position P2, the planar arm surface 244 contacts the interface. 124. The finger portion 234 is generally flush with the plane 220 of the face 124. 22 and the outer arm surface 222 is received in one of the bore corners 122C. The rotation described above causes the interface 124 of the drill bit 66 to engage with the drive cannula 11. 4. This configuration "interlocks" with the bore 122 in the proximal portion 116 of the drive cannula 114. The “self-positioning” of the interface 124 of the drill bit 66 relative to the bore 122 of the positioning portion 116 The end effector assembly 64 is aligned with the surgical handpiece assembly 62. Of course, the drill bit 66 may be Different types of alignment elements 242 and / or fingers 234 may be configured in other ways. As a non-limiting example, in some configurations, a drill bit may be The alignment elements 242 and / or the fingers 234 may be omitted from the slot 66. Other configurations are possible.

[0045] 15A-19C, as described above, the proximal portion 1 of the drive cannula 114 is 16 cooperates with the output hub 96 of the actuator assembly 82 to drive the output hub 96. The splined engagement with the cannula 114 facilitates rotation of the drill bit 66 about the axis AX. As best seen in FIGS. 15A and 17A, the output hub 96 includes a hub distal end 2 46 and the hub proximal end 248, and extends from the hub distal end 246 adjacent to the integral carrier 104. and one or more axially extending tubing members 242 extending toward and away from the hub proximal end 248. 2 includes a plurality of internal splines 250. Here, the output hub 96 includes internal splines 250. 50 extends inwardly from the hub proximal end 248 to terminate distally thereinto with an internal spline 250 A lockout taper 252 is provided having a generally frusto-conical profile that is integral with the It is being done.

[0046] With continued reference to Figures 15A and 17A, the proximal portion 116 of the drive cannula 114 is , the distal end 254 of the proximal portion 116 of the drive cannula 114 and the proximal portion 116 of the drive cannula 114 116. Here, the tapered seating surface 192 extends between the distal end 25 4 and tapers into the hexagonal bore 122 as described above. The bore 122 extends along an axis AX toward a proximal end 256. The proximal portion 116 of the drive cannula 114 has a similarly tapered hexagonal bore 122 therein. 17A), removing the drill bit 66 from the surgical handpiece assembly. A release taper 258 is provided to aid in ease of removal. One or more grooves or drive lugs formed by the outer surface of the proximal portion 116 of the drive rail 114. This is facilitated by one or more protrusions extending from the exterior surface of the proximal portion 116 of the tube 114. In one configuration shown in FIG. 15A, one or more protrusions include a proximal end 256. The outer spline 254 extends from the distal end 254 toward the distal end 254 and is spaced apart from the distal end 254. The external spline 260 includes a release taper 258 at a proximal end 256. The locking surface 262 defines a locking surface 262 adjacent the retaining surface 224 of the resilient arm 188. axially locking the drill bit 66 to the surgical handpiece assembly 62. The specific shapes and dimensions of the internal and external splines are The arrangement is such that the locking surface is still present and the drive interface is engaged when received in the bore. As long as the stop face is positioned relative to the bore so that the bit's retaining face is accessible, different In some configurations, the release taper 2 58 and the locking surface 262 are integral and are adapted to abut against the retaining surface 224 of the resilient arm 188. The drive cannula 114 is configured to have a proximal portion 116 that cooperates to form a retention surface. The retention surface of the proximal portion 116 of the drive cannula 114 extends from the axis AX in a proximal to distal direction. 114. The drill bit 66 may be tapered away from the drive cannula 114 to prevent unintentional removal of the drill bit 66 from the drive cannula 114. Stop.

[0047] In one configuration, best shown in FIGS. 15B, 17A, and 17C, the proximal end 256 is , spaced distally from the hub proximal end 248 of the output hub 96. The locking surface 262 of the proximal portion 116 is similarly spaced distally from the hub proximal end 248. , and is also distally spaced from the lockout taper 252 of the output hub 96. The configuration allows the retention surface 224 of the resilient arm 188 and the proximal portion 116 of the drive cannula 114 to engage with each other. Engagement with one of the locking surfaces 262 locks the proximal portion 116 or 118 of the drive cannula 114 to the The drill bit 66 is held axially without engagement with any other portion of the output hub 96. Alternatively, the lockout taper 252 of the output hub 96 and the proximal portion 112 of the drive cannula 114 may be The release taper of 16 defines a resilient arm 188 by which the drill bit 66 can be axially held. 1. The retaining surface 224 of the retaining member 220 is disposed and configured such that the retaining surface 224 of the retaining member 220 is not maintained in abutting engagement with the retaining surface 224 of the retaining member 220. As generally shown in FIGS. 7A-19C, the outer spline of the proximal portion 116 of the drive cannula 114 is The insulator 260 is disposed radially about the axis AX relative to the bore 122. , external splines 260 on proximal portion 116 of drive cannula 114 define a locking surface 262. and the bore 122 is radially disposed adjacent the bore corner 122C. Therefore, the retaining surface 224 of the resilient arm 188 is adapted to engage one of the locking surfaces 262. axially aligned radially with the outermost drive portion 202 of the interface 124. The specific configuration of the proximal portion 116 of the drive cannula 114 and the output hub 96 and and the arrangement is such that when the locking surface is still present and the drive interface is received in the bore As long as the locking surface is positioned relative to the bore such that the bit retaining surface is accessible to the bit retaining surface, The arrangement or shape of the slits can be adjusted to suit the application.

[0048] Referring now to FIG. 15D, an alternative embodiment of the drive cannula and output hub is illustrated. A proximal portion 116' of the drive cannula 114' is provided at the actuator assembly. In cooperation with the output hub 96', a splined engagement between the output hub 96' and the drive cannula 114' is provided. The output hub 96' is connected to the distal end of the hub 96' to facilitate rotation of the drill bit about axis AX. 246' and the hub proximal end 248', and extends from the hub distal end 246' to the integral carrier 10 4' toward the hub proximal end 248' and away from the hub proximal end 248' The splines 250' extend from one or more internal splines 250'. Between each pair of splines 250' In axial alignment with these recesses, recesses 251 may be present. There may be pockets 253 present to provide additional clearance for the resilient arms to flex outward. Here, the output hub 96' has internal splines 250' extending distally from the hub proximal end 248'. Terminated by a generally frusto-conical protrusion 250' extending inwardly and merging with an internal spline 250'. A lockout taper 252' having a profile is provided.

[0049] With continued reference to FIG. 15D, a proximal portion 116' of drive cannula 114' is The distal end 254' of the proximal portion 116' of the drive cannula 114' is 16', with the tapered seat extending between the proximal end 256' of the distal end 254. 122′ and is tapered into the hexagonal bore 122′ as described above. The abutment 122' extends along an axis AX toward a proximal end 256'. The proximal portion 116' of the drive cannula 114' has a similarly tapered hexagonal bore. This provides a solution that helps facilitate the release of the drill bit from the surgical handpiece assembly. The spline engagement is provided at the proximal portion of drive cannula 114'. or one or more grooves formed by the outer surface of the proximal portion 11 of the drive cannula 114. This is facilitated by one or more protrusions extending from the outer surface of the 6. In one configuration, the one or more protrusions may include a proximal end 256' extending from a distal end 254'. and includes an external spline 260' formed spaced from a distal end 254'. The external splines 260' are engaged adjacent the release taper 259 at the proximal end 256'. The locking surfaces 262' are radially aligned and slightly The release taper 259 is at least partially axially aligned with the locking surface 262'. The locking surface 262' may be defined by a protrusion 261 extending proximally relative to the locking surface 262. The drill bit 66 is then abutted against the retaining surface 224 of the resilient arm 188 and attached to the surgical handpiece assembly. The internal spline and the external spline are arranged to lock axially against the assembly 62. The specific shape and arrangement of the splines must be such that the locking surfaces are still present and the drive interface is The bore is formed such that the locking surface is accessible to the retaining surface of the bit when the base is received in the bore. As long as the position of the lens is adjusted to a different position or shape, some In this configuration, the release taper 259 and the locking surface 262' are integral, and the resilient arm a retaining surface on a proximal portion 116' of a drive cannula 114' configured to abut against a retaining surface on The locking surfaces on the proximal portion 116' of the drive cannula 114 cooperate to form a drill To prevent unintentional release of the bit from the drive cannula 114', The direction may be perpendicular to the axis AX.

[0050] In this configuration, the proximal end 256' is distal to the hub proximal end 248' of the output hub 96'. The locking surfaces 262' of the proximal portion 116' of the drive cannula 114' are similarly spaced apart in the direction of the arrow A. hub proximal end 248' and a lockout member 246' for locking the output hub 96'. The release taper 259 and therefore the protrusion 252 are also spaced distally from the release taper 252'. The proximal end of 61 is also distally spaced from the lockout taper 252 of the output hub 96'. This configuration separates the retaining surface of the resilient arm from the proximal portion 114' of the drive cannula 114'. 16' with one of the locking surfaces 262' of the drive cannula 114'. The drill bit is axially retained without engagement with the portion 116' or any other portion of the output hub 96'. Alternatively, the lockout taper 252' of the output hub 96' and the drive cannula The release taper 259 of 114' forms a resilient arm by which the drill bit can be axially held. The bore 122' is disposed and configured such that it does not maintain abutting engagement with the retention surface of the bore 122'. The locking surface 262' is radially disposed adjacent the corner 122C, so that the elastic The retaining surface of the engagement arm engages one of the locking surfaces, thereby providing an outermost drive of the interface. The part must be radially aligned about the axis.

[0051] As will become apparent from the following description, the insert 72 of the drill bit 66 is may be constructed in a different manner sufficient to be releasably attached to the assembly. As a non-limiting example, some of the illustrated configurations are shown in FIGS. , the insert 72 is radially aligned with each of the outermost drive sections 202 of the interface 124. A pair of generally identical and diametrically opposed retaining surfaces 224, each having aligned retaining surfaces 224. 10 and 11. The resilient arm 188 is provided with a resilient arm 188, although it should be appreciated that other configurations are contemplated. As a general example, the insert 72 may rotate about the axis AX at 60° or intervals from the outermost drive 202. It is also possible to provide two resilient arms 188 spaced radially from the 0, 32, and 33). 15°, 30°, 45°, or Other spacings are contemplated, such as spacings of 10 mm to 15 mm. In some configurations, the resilient arms 188 and and one of the outermost drives 202 are positioned within 15° of each other relative to the axis AX. do.

[0052] Additionally, the insert 72 may have gripping surfaces 224, fingers 226, and other gripping surfaces 224 of different shapes, sizes, or angles. 234, alignment element 242, etc., a plurality of resilient arms of different or similar configurations. 188 (schematically shown in FIG. 30). Meanwhile, the insert portion 72 has a single elastic arm 18 as shown in the configurations of FIGS. 25 and 26. 27 and 28, which may have eight resilient arms 188, or three resilient arms 188. As shown in the configuration of 28, it is also possible to have more than two resilient arms 188. 32 and 33 each include one It is also possible to have up to six resilient arms 188. Further, the interface 124 Some of the configurations are diametrically spaced from one another about the axis AX and are similar or identical A profiled resilient arm 188 is included, although other configurations are contemplated. The interface 124 shown diagrammatically in FIG. The five resilient arms 188 may be of various configurations (with retaining surfaces 224 of various orientations). Other configurations are contemplated.

[0053] The illustrated drill bit 66 is a twisted drill with spiral grooves 182 that facilitate tissue penetration. Although the cutting tips 70 may be configured as drills, in some configurations other types of cutting tips 70 may be employed. For example, the cutting tip 70 may be a burr, a reamer, a tap, a screw, It is also possible to realize it as a driver, etc. The Lilbit 66 is cannulated in some configurations along the axis AX. The distal end of the ...

[0054] As mentioned above, the interface 124 of the drill bit 66 of the present disclosure is received in the bore 122. The device may have many different cross-sectional profiles or configurations sufficient to be accommodated and rotate simultaneously. In some configurations, the interface 124 may have a different number of planes. As an example, the interface 124 shown in FIG. Each of these configurations has at least four planes 220 (six in the configurations shown in FIGS. 29 and 30). In the configuration shown in FIG. 31, four are provided, and in the configuration shown in FIG. 32, twelve are provided. Configurations may employ three or fewer planes 220, such as the configuration shown in FIG. 33 with two planes. Of course, the interface 124 and / or the plane 220 may Other arrangements and configurations of are also contemplated.

[0055] In some configurations, the interface 124 may include a differential that defines the outermost drive 202. 29 and 30. The configuration of the faces 124 is generally hexagonal, each defining an outermost drive portion 202. The interface 124 shown in FIG. 31 is generally rectangular and has six corners 218. 32. The interface 210 shown in FIG. The star 124 is generally star-shaped and includes corners 218 that define the outermost drive sections 202. The drive lobes 245 terminate at corners 218 defined by points, vertices, etc. In a configuration in which the interface 124 includes a drive lobe 245 having at least two The drive lobes 245 may define the outermost drive section 202. However, as described above, The interface 124 may have three drive lobes 245, five or more drive lobes 245 Other configurations are possible, such as when the outermost drive 202 is 2 has an irregular shape with a single corner 218 defining it. And / or other arrangements and configurations of the outermost drives 202 are also contemplated.

[0056] Here, referring to the configuration of the insert portion 72 of the drill bit 66 shown in FIG. One of the support surfaces 224 of the arm 188 and the outermost drive portion 2 of the interface 124 One of the outer drive surfaces 206 of the first embodiment intersects the axis AX and is connected to the retaining surface 224 and the resilient axle. Two equal parts of the arm 188 and two of the outer drive surface 206 and the outermost drive section 202. or having or defining a common bisection plane CBP that defines equal portions of Of course, the above symmetrical relationship is only an example. , and other configurations are contemplated.

[0057] Here, referring to the configuration of the insert portion 72 of the drill bit 66 shown in FIG. One of the retaining surfaces 224 of one of the arms 188 and one of the drive lobes 245 One is a pair of equal parts of the holding surface 224 of the resilient arm 188 intersecting the axis AX, and 2 defines two equal portions of the outermost drive section 202 (here triangular drive lobes 245 or In this case as well, the bisection plane CBP is aligned with the The above symmetrical relationships are exemplary and other configurations are contemplated.

[0058] Here, referring to the configuration of the insert portion 72 of the drill bit 66 shown in FIG. One of the support surfaces 224 of the arm 188 intersects with the axis AX to form a joint between the two support surfaces 224. It has or defines a first bisection plane FBP that defines equal portions, or The outermost drive portion of the interface 124 is aligned with the bisection plane FBP. One of the outermost drive parts 202 intersects with the axis AX to define two equal parts of the outermost drive part 202. (here defined by two vertices of the corners 218 of the rectangular profile) It has or defines a second bisection plane SBP or has such a bisection plane FBP and In this configuration, the second bisection plane SBP is aligned with the first bisection plane SBP about the axis AX. The elastic arm is spaced about 60° from the bisection plane FBP in the radial direction. The support surfaces 224 of the arms 188 are spaced at approximately 60° intervals from the outermost drive section 2 of the interface 124. 02. Again, other configurations are contemplated. do.

[0059] Referring now to FIG. 2, in one configuration, the interface 124 is An interface defined between the base distal end 194 and the interface proximal end 196. The shank 176 has a length IL defined between a distal end 180 and a proximal end 178. The shank length SL is at least three times the interface length IL. It will be understood by those skilled in the art that the shank length SL is at least 5 times the interface length IL. In some cases, other configurations for the drill bit 66 are contemplated. Referring now to FIG. In the illustrated configuration, the holding surface 224 has a holding distance RD that is equal to or greater than the interface length IL. 196. Again, other configurations are contemplated. can be done.

[0060] 1, 2, and 34, as described above, in some embodiments In this case, the tip protector 68 is adapted to conceal at least a portion of the cutting tip 70 of the drill bit 66. 1, the drill bit is inserted into the drive cannula 114 of the surgical handpiece assembly 62. To facilitate releasable attachment of 66, the tip holder of the end effector assembly 64 is A tip protection device 68 is provided. Thus, a user can grasp the tip protection device 68 and insert the drill bit. By operating the cutter 66, the surgical handpiece assembly can be assembled without touching the cutting tip 70. After facilitating attachment to assembly 62, tip protector 68 is removed from cutting tip 70. For this reason, as shown in FIG. 36, the tip protection device 68 is generally and a handle 266 configured to be gripped by a cutting tip 7 of the drill bit 66. 0 and a receptacle 268 capable of receiving the

[0061] In the configuration of the tip protection device 68 shown in Figs. 1, 2, and 34 to 36, As best shown, the handle 266 is integrally attached for axial movement, such as by a press fit engagement. The handle includes a first handle body 270 and a second handle body 272. The handle body 270 defines a handle bore 274 extending along the handle axis HA. A receiver 276 is rotatably supported within the drill bore 274 for receiving the drill, such as by friction fit engagement. A receptacle 268 is provided that can receive the cutting tip 70 of the bit 66. Thus, the receiver 276 is disposed adjacent the first handle body 270 to the second handle body 272. The second handle body 272 has a flange 278 abutting the first handle portion. The flange of the receptacle 276 is formed to define a recess 284 between the body 270 and the stepped region 282. 278. The inlet 280 tapers inwardly to a stepped region 282 disposed adjacent the stepped region 278. The flange 278 is fitted to a receptacle 276 which extends from the handle bore 274 along the handle axis HA. The receiver 27 is disposed in the recess 284 so that translation of the receiver 27 is limited. 6 can rotate about the handle axis HA within the handle bore 274 without rotation of the handle 266. It is Noh.

[0062] When the cutting tip 70 is disposed within the receptacle 268, the drill bit 66 276, effectively rotates about handle axis HA. 2. Grasp the handle 266 and insert the drill bit 66 into the hole 266 without touching the end 70. The surgical handpiece assembly 62 can be attached to the surgical handpiece assembly 62. Relative rotation between the handle 266 and the drill bit 66 causes the drill bit 66 to rotate as shown in FIGS. This complements the "self-aligning" feature of the drill bit 66 described above in relation to B. In addition, the engagement of the interface 124 with the bore 122 via the alignment element 242 is In this configuration, rotation can occur without returning to the handle 266, which This allows for efficient attachment of the drill bit 66 to the surgical handpiece assembly 62. Injury is promoted.

[0063] As mentioned above, the tip protector 68 can be used in a number of different ways to facilitate operation of the drill bit 66. For example, in the configuration of the tip protection device 68 shown in Figs. 37 and 38, The first handle body 270 and the second handle body 272 of the handle 266 are The members are attached together by a connecting mechanism, adhesive, bonding, etc., so as to be movable laterally. 278 to accommodate the axial movement of the receiver 276 relative to the handle 266. A recess 284 is also provided to limit the cutting tip 70 of the drill bit. Receptacle 268 is similarly configured to be releasably secured to the housing 262 by frictional engagement or the like. It has been made.

[0064] The tip protector 68 configuration shown in FIGS. 39 and 40 has a handle 266 that is 268, which is realized as a single integral component. When relative rotation between the drill head 266 and the drill bit 66 is not desired or required, Some configurations, such as a configuration with a single tip protector 68, may be used in conjunction with the In this configuration, at least a portion of the tip protection device 68 may be elastically deformable. , may be tapered or stepped to accommodate cutting tips 70 of different sizes. Of course, these features may be incorporated in the embodiments set forth herein. It may also be utilized in conjunction with other types of tip protectors 68 .

[0065] The configuration of the tip protection device 68 shown in FIGS. 41 and 42 is a single An integral handle 266 is employed. Here, the receptacle 268 is secured by the handle 266. The handle 280 is similarly defined by the magnet 286 and extends along the handle axis HA between the magnet 286 and the inlet 280. If the lil bit 66 is made of a ferromagnetic material, the magnet 286 will attract the cutting tip 70. The pulling together of the tip protector 68 and the drill bit 66 facilitates a releasable retention between the tip protector 68 and the drill bit 66. Here, it is to be understood that the receptacle 268 is a drill bit 6 6, while the magnet 286 holds the drill bit 66 axially. 266. The drill bit 66 and the handle 266 are sized to facilitate relative rotation between the drill bit 66 and the handle 266. In some configurations, such as when magnet 286 is relatively strong, The receptacle 268 may be sized to receive cutting tips 70 of various sizes, diameters, etc. It may be set.

[0066] The configuration of the tip protection device 68 shown in Figs. 43 and 44 is shown in conjunction with Figs. 35 and 36. A handle 266 is employed that is configured similarly to the tip protection device 68 described above. However, In this configuration, a sleeve 288 is supported in the first handle body 270. Here, the sleeve 288 rotatably supports the receiver 276 and the second handle Cooperating with the body 272, it defines a recess 284 in which the flange 278 is disposed. 42, the cutting of the drill bit 66 is prevented. A magnet 286 is employed to help retain the tip 70. However, in this configuration, the handle A magnet 286 is disposed radially about the drill bit axis HA and exerts a magnetic attraction on the drill bit 66. In some configurations, cutting tips of various sizes, diameters, etc. 70. As an example, the arrangement of the magnet 286 facilitates the retention of the receptor 276. A cutting tip 70 having a smaller diameter than the receptacle 268 is provided both axially and laterally. The second electrode may be arranged to be held in place.

[0067] The configuration of the tip protection device 68 shown in Figs. 45 and 46 is similar to that shown in Figs. 43 and 44. A handle 266, a first handle body 270, and a second handle body 270, which are similar in configuration to the tip protection device 68 described above. A second handle body 272 and a sleeve 288 are used. However, in this configuration, The receiver 276 has one or more resilient tabs 290 extending inwardly toward the handle shaft HA. Here, when the cutting tip 70 is inserted into the receptacle 268, the resilient tab 29 0 contacts and exerts a force on the cutting tip 70. Therefore, it goes without saying that this tip protection The configuration of device 68 allows for releasable attachment of cutting tips 70 of various sizes, diameters, etc. The same can be applied to attachment.

[0068] 7A-7I show a drill bit 66 attached to a surgical handpiece assembly 62. and then releasing the drill bit 66 from the surgical handpiece assembly 62. Specific steps are shown in sequence. FIG. 7A shows the hand with the drill bit 66 completely removed. Various portions of a surgical handpiece assembly 62 are shown.

[0069] In FIG. 7B, a drill bit is partially inserted into the surgical handpiece assembly 62. 66. Although not shown in this figure, it is to be understood that The insertion of the drill bit 66 is performed by adjusting the relative position between the drill bit 66 and the handle 266 as described above. The tip protector 68 is removable from the cutting tip 70 to allow for easy rotation, etc. It is convenient to carry out the process in a mounted state. An abutment is provided between the forward cannula 134 and the distal end 254 of the proximal portion 116 of the drive cannula 114. The shank 176 is spaced from the proximal end 178 such that the arm end 200 is axially disposed. The elastic arm 188 is shown in the extended state as shown in FIG. The device is shown in its deployed state.

[0070] In FIG. 7C, the drill bit 66 is (compare with FIG. 7B) 62. Here, the inclined surface 230 of the resilient arm 188 The movable cannula 114 is in contact with the seat surface 192 of the proximal portion 116 of the movable cannula 114 and is bent toward the axis AX. The figure shows the state of the

[0071] In FIG. 7D, the drill bit 66 is (compare with FIG. 7C) 10 and 11. The resilient arm 188 then advances further into the assembly 62. Here, the outer arm surface 222 of the resilient arm 188 is shown contacting bore 122 in proximal portion 116 of drive cannula 114. As is apparent from the above description of the alignment element 242, 24 and bore 122, and the drive cannula 114 An interface 124 of the drill bit 66 interfaces with a bore 122 of the proximal portion 116. Further, in FIG. 7D, the elastic arm 188 is disposed in the second position P2. The figure shows the sensor in its installed position.

[0072] In FIG. 7E, drill bit 66 is (compare with FIG. 7D) Assembly 62. Here, the interface 124 The proximal end 196 of the drive cannula 114 extends into the bore 122 of the proximal portion 116 of the drive cannula 114. Similarly, in FIG. 7E, the elastic arm 188 is in a state in which it is disposed at the second position P2. As shown in Fig.

[0073] In FIG. 7F, the drill bit 66 is inserted into the surgical handpiece assembly (as compared to FIG. 7E). The whole advances into the assembly 62. Here, the resilient arm 188 moves away from the axis AX. In the direction from the second position P2 to the first position P1 (or in some configurations As described above, this allows the drive The resilient arm 262 is attached to the proximal end 256 of the proximal portion 116 of the cannula 114. 188 abuts the retention surface 224 of the drill bit 66, thereby preventing distal movement of the drill bit 66 along the axis AX. Further, the stop surface 190 of the drill bit 66 and the drive cannula 114 are The drill bit 66 is secured to the surgical handpiece by abutment with the seating surface 192 of the proximal portion 116 of the Further axial progression into assembly 62 is prevented. In this case, the drill bit 66 is axially locked to the drive cannula 114. , the interface 124 of the drill bit 66 is aligned with the proximal portion 116 of the drive cannula 114 . Being disposed within bore 122, drill bit 66 is in engagement with drive cannula 114. Therefore, in the orientation shown in FIG. The assembly 62 may be utilized to rotate a drill bit 66 .

[0074] In FIG. 7G, the drill bit 66 is disposed in the same axial position as in FIG. 7F, but The resilient arm 188 (compare with FIG. 7F) prevents drilling by actuation of the release assembly 150. To facilitate removal of the handpiece 66 from the surgical handpiece assembly 62, the axis A In FIG. 7G, the release assembly is shown bent back toward the X side. Rotation of collar 162 of reel 150 results in axial translation of release member 164, which in turn displaces actuation force. The release surface 175 of the element 174 comes into contact with the inclined surface 230 of the elastic arm 188, The arm 188 is bent back towards the axis AX.

[0075] In FIG. 7H, the drill bit 66 has been moved forward from the axial position shown in FIGS. 7F and 7G. (distal direction) so that the resilient arm 188 is slightly pushed in the direction of the axis A (compared to FIG. 7G). In FIG. 7H, the release assembly is shown bent back further toward the X side. Further rotation of collar 162 of reel 150 results in further axial translation of release member 164. By this movement, the elastic arm 188 is bent back further toward the axis AX, and the driving cannula The elastic arm 114 abuts against a locking surface 262 provided at a proximal end 256 of the proximal portion 116 of the elastic arm 114. 188 is released, allowing the drill bit 66 to be attached to the surgical handpiece assembly. This makes it easier to remove the bridge 62.

[0076] In FIG. 7I, the drill bit 66 is released by the release assembly 150 ( 7I) is retracted in the axial direction. is disposed at a second position P2 and is connected to a proximal end 256 of the proximal portion 116 of the drive cannula 114. In FIG. 7I, the elastic arm 188 is shown in a state of being disposed adjacent to the elastic arm 188. The retaining surface 224 does not abut the locking surface 262 on the proximal portion 116 of the drive cannula 114. The drill bit 66 can then be removed from the surgical handpiece assembly 62. In some configurations, the resilient arm 188 is bent toward the second position P2 to contact the locking surface. The potential energy stored when not in contact with 262 causes the 7G and the drill bit is driven distally forward (i.e., This feature is achieved by the drill bit 66 being "kicked" by the release assembly 150. This is particularly convenient since it can be released by the user with one hand via the The user does not need to grasp the drill bit 66 or can simply hold the release assembly 15 with one hand. 0 to release drill bit 66 from drive cannula 114 while using the other hand directly affects the movement of the drill bit 66.

[0077] Thus, the end effector assembly 64 described herein and illustrated in the drawings includes: In connection with facilitating releasable attachment to the surgical handpiece assembly 62, Specifically, it will be appreciated that the drill bit 66 of the present disclosure is After guiding portion 72 into proximal portion 116 of drive cannula 114, a force is applied along axis AX. The addition of the casing 62 securely fits the surgical handpiece assembly 62 in a simple and efficient manner. It will further be appreciated that the tip protection devices described herein may be 68, when used in conjunction with drill bit 66, drives insert 72 through drive cannula 114. The drill bit is guided to the proximal portion 116 of the drill bit 110 by the user while applying force along the axis AX. It provides another advantage by allowing for safe manipulation and positioning of the handle 66. Additionally, non-limiting self-aligning features of the end effector assembly 64 described herein include The alignment element 242 of the resilient arm 188 and the drill bit 66 and tip guard This includes, but is not limited to, relative rotation between the handle 266 of the device 68 and the Improved user experience and efficient and secure attachment to surgical handpiece assembly 62 will be further promoted.

[0078] As mentioned above, the distal portion 118 of the drive cannula 114 is adapted to rotate the drill bit 66. When the surgical handpiece assembly 62 is utilized in connection with other applications, the rotational torque The device may include a distal projection 126 arranged to facilitate transmission of the In particular, the illustrated drive cannula 114 includes a distal projection 118 at the distal end of the drive cannula 114. 126 and many different types of surgical attachments that can be configured to simultaneously engage and rotate A surgical handpiece assembly 62 holds the surgical module, tools, end effectors, etc. It is constructed so that it can rotate, drive or operate. According to the present invention, the drilling and reaming procedures, the drilling and sawing procedures, or the drilling and The same surgical hardware is used for numerous medical and / or surgical procedures, including surgical and wire-driven procedures. For example, a sagittal saw assembly, a reciprocating saw assembly, Assembly, drill chuck assembly, reamer assembly, wire drive assembly, and The drive cannula is provided to aid in the operation and installation of one of the deburring assemblies. A distal portion 118 of the guide 114 may be employed.

[0079] As shown in FIGS. 47 to 51, the surgical handpiece assembly 62 is removable. An exemplary surgical attachment module 300 configured to be mounted on a surgical instrument is shown. 47 and 48 show a handpiece assembly 62 separated from the surgical handpiece assembly 62. 1 shows the surgical attachment module 300. Handpiece Housing Assembly 74 includes a handpiece coupler 302 adjacent its distal region. The surgical attachment module 300 includes a surgical attachment housing 304. The attachment housing 304 is removably connected to the handpiece coupler 302. The surgical attachment coupler 306 may be configured to couple to the surgical attachment. In this configuration, the handpiece coupler 302 and the surgical attachment coupler 306 , which cooperate to form a bayonet coupling. The surgical attachment coupler 306 is The handpiece coupler 302 includes a bayonet mount 308 that receives the bayonet mount 308. The handpiece defines a cavity 310 configured to accommodate the handpiece and vice versa. The surgical handpiece assembly 62 includes a spring-loaded button 314 (see FIGS. 50 and 51). 3 and 4, a bayonet mount in a cavity 310 of the surgical handpiece assembly 62. 308, the surgical attachment module 300 can be attached to a surgical handle. A pin 312 is provided for releasably attaching the handpiece assembly 62. Additionally, the bayonet mount 308 includes a “J-slot” configured to receive a pin 312. The button 314 may have a non-linear slot 316 (see FIG. 48) such as a When lowered, it is received by slot 316 of bayonet mount 308. The pin 312 moves when the bayonet mount 308 is received in the cavity 310. Release of button 314 moves pin 312 into its seat in slot 316, and the bayonet is then The net mount 308 is secured to a cavity 310 of the surgical handpiece assembly 62. In some configurations, the slot 316 may include a spring-loaded button 316. 14, the user can press button 3 14 is formed with an inclined surface that guides the pin 312 into the slot 316 without pushing the pin 312 down. When the pin 312 is seated in the slot 316, the bayonet mount 308 Specifically, the surgical attachment module 300 is connected to the surgical handpiece assembly 62. bayonet mount 308 and surgical attachment housing 306 in the mated engaged position. The bayonet mount 308 is connected to the handpiece. To release the device 302, the user depresses the button 314 and inserts the pin 312 into the slot. axially away from the handpiece coupler 302 by retracting the handpiece 316 from its seat The surgical attachment housing 304 is movable. and the surgical attachment coupler 306 may be attached to each other in a variety of different configurations as long as they are attached to each other in a cooperative manner. It is contemplated that other configurations or shapes may be used. The bushing of attachment module 300 includes the bayonet mount described above.

[0080] As shown in FIG. 49, the surgical attachment module 300 is in the engaged position. The surgical attachment module 300 is attached to the surgical attachment housing 304. and a drive shaft adapted to rotate about the surgical attachment axis SX. When the surgical attachment module 300 is in the engaged position, In this case, the surgical attachment axis SX is aligned with the axis AX of the surgical handpiece assembly 62. When the surgical attachment module 300 is in the engaged position, the surgical The drive shaft 318 of the attachment module 300 is inserted into the distal end of the drive cannula 114. The surgical attachment module 300 is coupled to the protrusion 126 and extends from the distal projection 126. The drive shaft 318 is connected to the distal projection 126 and configured to receive torque from the distal projection 126. and configured to receive torque from distal protrusion 126 via an interference coupling. 320. The drive shaft 318 engages the distal protrusion 126. It is contemplated that different configurations or shapes may be used as long as the torque is received from the In any event, the specifics of drive shaft 318 and drive cannula 114 are used throughout this application. Although the shape of the drive cannula 11 is described, it should be understood that each component is different. 4 to the surgical attachment module 300. In the illustrated configuration, the surgical attachment module 300 The drive shaft includes an output member configured to drive the surgical end effector. The drive shaft 318 and output member have a distal projection 126 that is received and available on the drive shaft 318. The output member converts the available torque into available mechanical power for driving the surgical end effector. A linkage and / or gear train may be associated.

[0081] As shown in Figures 47, 50 and 51, the surgical handpiece assembly 62 includes: The surgical handpiece assembly 62 is coupled to a power source (e.g., a removable battery). The device further includes one or more electrical connectors 322 that are coupled to a power source when the device is connected to the power source. The surgical attachment module 300 receives only mechanical power and no electrical power, but One or more surgical attachment modules are attached to a surgical handpiece assembly 62 It is contemplated that the device may receive both mechanical and electrical power from, for example, a light source (not shown). A rotary drive attachment module including a drive shaft 318 provides torque in the form of a torque signal. It receives mechanical power and electrical power in the form of voltage through electrical connections in the surgical handpiece assembly 62. A separate surgical attachment module (not shown) may be configured to rotate so that the surgical attachment module is In another configuration, the drive attachment module may include a combined hand. A specific surgical attachment module receives power exclusively from the surgical handpiece. It may be arranged so that

[0082] In FIG. 47 to FIG. 51, the surgical attachment module 300 includes a wire-driven assembly. Such a wire drive assembly is disclosed in US Pat. US Patent Application Publication No. 2017 / 0340374, "Surgical Wire Dr iver Capable of Automatically Adjusting for the Diameter of the Wire or Pin Bein and "G Driven," the entire contents of which are incorporated herein by reference. Configured to couple to handpiece coupler 302 of surgical handpiece assembly 62 and adapted to receive torque from distal projection 126 of distal portion 118 of drive cannula 114. Another surgical attachment module having a surgical attachment coupler configured as may be removably attached to the surgical handpiece assembly 62. It is thought that.

[0083] As mentioned above, the surgical handpiece system 60 includes a surgical handpiece assembly 62. and associated with a surgical handpiece assembly 62. The system further includes a measurement module 128 configured to provide additional measurement capabilities to the surgeon. The measurement module 128 is adapted to measure the distance between the drill bit 66 and the proximal portion 116 of the drive cannula 114. Can be used with surgical handpiece assemblies when fitted. 134 is disposed within the guide bush 132 and is adapted to move in parallel along the measurement axis MX. The depth cannula 134 is supported at least partially within the measurement housing 138. Similar to the surgical attachment module 300, the measurement module 1 28 is configured to be removably coupled to the handpiece coupler 302. Measurement couplers 324, 326. In some configurations (see Figures 52-54), Housing 138 contains measurement coupler 324. In other configurations (see Figures 55-66), Thus, the bushing 132 includes a measurement coupler 326. In the illustrated configuration, the handpiece coupler The combiner 302 and the measurement couplers 324, 326 cooperate to form a bayonet coupling. The fixed couplers 324, 326 are provided with bayonet mounts 328, 330 for handpiece connection. The cavity 310 of the connector 302 is adapted to receive the bayonet mounts 328, 330. The spring-loaded button 314 (FIGS. 50 and 54) 3. The pin 312 coupled to the surgical handpiece assembly 62 is inserted into the cavity 31 of the surgical handpiece assembly 62. 0, the measurement module 128 to the surgical handpiece assembly 62. More specifically, the bayonet mounts 328, 330 are adapted to receive the pin 312. Non-linear slots 332, 334, such as "J-slots" configured as shown in Figs. 53, 56, and 64). When button 314 is depressed, a bayonet The pin 312 is positioned to be received by the slots 332, 334 of the mounts 328, 330. When the bayonet mounts 328, 330 are received in the cavity 310, Release of button 314 moves pin 312 into its seat in slots 332, 334; The bayonet mounts 328, 330 are fitted to the cavity 3 of the surgical handpiece assembly 62. 10. In some configurations, slots 332, 334 by biasing pin 312 against spring-loaded button 314 and applying force. This allows the user to insert the pin 312 into the slots 332, 334 without depressing the button 314. The pin 312 is seated in the slots 332 and 334. In this case, the bayonet mounts 328, 330, and therefore the measurement module 128, are 3, in an engaged position coupled to the endpiece assembly 62; 30 and the measurement housing 138 are prevented from axial movement. To release the handpiece 330 from the handpiece coupler 302, the user presses the button 314. 3, by lowering the handpiece 312 so that the pin 312 is no longer seated in the slots 332, 334. The measurement module 128 can be moved in an axial direction away from the piece coupler 302. The piece coupler 302 and the measurement couplers 324, 326 are attached to each other by cooperation. It is contemplated that the surgical handpiece may have different configurations or shapes, as long as the configuration satisfies the requirements. System 60 consists of two surgical handpieces: one dedicated to measurement functions and the other for tissue cutting / By using the same handpiece coupler 302, you can easily The surgical attachment module 300 (which receives mechanical power from the surgical handpiece assembly 62) 6) and a measuring module 128 (a surgical handpiece assembly 6 2) and the attachment that does not receive mechanical force from the surgical handpiece assembly It is convenient in terms of attaching it to Li62.

[0084] As best seen in FIGS. 4 and 6, the depth cannula 134 defines a bore 338. The bore 338 of the depth cannula 134 is adapted to allow the measurement coupler to be inserted into the handpiece. 302. The coupler 302 is adapted to receive at least a portion of the drill bit 66 when attached to the coupler 302. The depth cannula 134 is sized to slide against the drill bit 66. Assisting in the performance of the measurement functions associated with the surgical handpiece assembly 62. In a particular configuration, the drive cannula 114, the depth cannula The drill bit 66 is in the engaged position and the drill 134 is in the engaged position. When the measurement module 128 is coupled to the surgical handpiece assembly 62, The depth cannula 134 is positioned so that the drill bit 66 is in the engaged position. and a measurement housing 138 is coupled to the handpiece housing assembly 74. 1, the drive cannula 114 is at least partially received in a bore 122 of a distal portion 118 of the drive cannula 114. Drill along the measurement axis MX and handpiece axis AX Concentricity of the depth cannula 134 to the bit 66 and the surgical handpiece assembly A depth configured to be received by a drive cannula 114 positioned in the bridge 62. The placement of the cannula 134 is determined using the measurement module 128 in the surgical handpiece system. This is beneficial in improving the visibility of the surgical site to the user operating the 60. Regarding the configuration of the surgical handpiece described in Application No. PCT / US2016 / 049899 , the entire disclosure of which is incorporated herein by reference. In certain embodiments, a deep cannula The bore 134 may have a depth extension that is not concentric with the bore of the drive cannula 114. good.

[0085] 52-54 illustrate a surgical handpiece according to one exemplary configuration of the measurement module 128. 52-54 show a system 60. In at least some respects, the configuration shown in FIGS. The configuration shown in FIG. 52 to FIG. 54 is the same as that described above, and the same reference numerals denote the same components. In this configuration, the measurement housing 138 includes a measurement coupler 324, as described below. However, any of the features shown in Figures 47 to 51 may be included in the embodiment shown in Figures 52 to 54. may be included in the

[0086] As shown in FIG. 53, the measurement housing 138 is adapted to allow the measurement module 128 to be mounted on the surgical hand. When coupled to the surgical handpiece assembly 62, the proximal surface 342 contacts the surgical handpiece assembly 62. The measurement housing includes a body portion 340 having a proximal region configured to face the rib 62. Ring 138 may comprise any suitable material, such as plastic or metal. The measurement housing 138 may be formed by two complementary shell components. good.

[0087] The measurement housing 138 includes a measurement coupler 324. The measurement coupler 324 is disposed on the proximal face 34. 2. As discussed above and shown in the configuration of FIG. 53, measurement coupler 3 24 includes a bayonet mount 328. The bayonet mount 328 is as described above. 50)。 "J-slot" 332 receives protrusion 346 of motor housing 85 (see FIG. 50). and another slot 344 opposite the "J slot" that allows the handpiece Assists in radial alignment to coupler 302.

[0088] Also, as shown in FIG. 54, the measurement module 128 is at least At least a portion of the cannula 134 is received between the proximal end and the distal end. In a particular configuration, the proximal end of the bushing 132 is 53 and 54. In the configuration where the bayonet mount 328 is used, the bayonet mount 328 is The bushing 132 is fitted in the bore 348 of the bayonet mount 328. The bushing 132 defines a bore 350. The bushing 132 extends through a proximal face 342 of the housing 138. The bore 350 of the bushing 132 surrounds the cannula 134. In the illustrated embodiment, the bushing 132 is concentric with the measurement axis MX. When attached to coupler 302, bore 35 of distal portion 118 of drive cannula 114 2. The bushing 132 is configured to be partially received by the The distal end of the stent 350 has an outer surface having a registration portion 354 adjacent the distal end.

[0089] Alignment portion 354 of bushing 132 mates with bore 118 of distal portion 118 of drive cannula 114. Size the 352 so that its inner diameter is close to the MX axis and aligned with the AX axis of the handpiece. In other words, the alignment portion 354 has an outer diameter that is adjusted to fit the drive cannula 11. 4. The bushing 132 functions to guide the bushing 132 into the bore 352 in the distal portion 118 of the In the configuration, the alignment portion 354 is aligned from the distal direction to the proximal direction toward the measurement axis MX. The axis of the handpiece, AX, or the drive cannula, is By properly aligning the measurement axis MX with the axis of the measuring module 114, 128 is coupled to the surgical handpiece assembly 62. , driving cannula 114, and drill bit 66. At least one of the depth cannula 134, the drive cannula 114, and the drill bit 66 is and the undesired friction between the driving cannula 1 along the measurement axis MX. 14 and the drill bit 66. This connection is possible because of the depth cannula 134 being pushed back when the drill bit 66 is retracted. More specifically, too much adhesion may prevent rapid distal migration. A biasing mechanism (described below) associated with the outgoing cannula 134 also biases the bone surface or proximal end of the cannula 134 toward the bone surface. The engagement of the depth cannula 134 with the plate surface may be impaired, causing the contact of the measurement module 128. The controller adjusts the depth of the surgical handpiece assembly 62 as it moves proximally. It may be impossible to accurately determine the acceleration (positive or negative) of the driving cannula 134. By directly aligning the bushing 132 with the 14, it is possible to align each part. The advantage of using part-by-part alignment is that it eliminates any positional errors that may result from tolerance stackup. One of the benefits is the reduction of misalignment.

[0090] As shown in FIG. 53, the measurement housing 138 includes a handpiece coupler 302 for coupling the measurement When coupled to the electrical connector 322 of the surgical handpiece assembly 62 to transmit power between the surgical handpiece assembly 62 and the measurement module 128. In the configuration shown in FIG. The electrical connector 356 of the handpiece 128 has two or three electrical pins and is connected to the surgical handpiece. The electrical connector 322 of the base assembly 62 is adapted to connect the measurement module 128 to the surgical handpiece. 2 or 3 configured to receive electrical pins when coupled to the sensor assembly 62. The three electrical pins are connected to the measurement housing 138. The proximal surface 342 of the body 340 extends from the proximal surface 342 and is radially spaced from the bushing. A group of three electrical pins are inserted between slots 332, 344 of bayonet mount 328. The three are spaced apart from the slots 332 and 344 at equal radial distances. The electrical pins are divided into electrical pins for power, electrical pins for ground, and electrical pins for data signal transmission. The electrical pins for signal transmission are connected between the measurement module 128 and the surgical handpiece assembly. It may also be used for communication and control between the bridge 62. , the electrical connector 356 of the measurement module 128 and the surgical handpiece assembly 62 The electrical connector 322 has two or less pins and two or less pin receptacles. In another configuration, the measurement module 128 and the surgical handpiece assembly 62 The number of pins and pin receptacles is 4 or more and 2 or less, respectively. The electrical connector 356 of the module 128 receives power from the surgical handpiece assembly 62. The electrical connector 356 of the measurement module 128 is configured to receive electrical power. A measurement coupler 324 coupled to the displacement sensor assembly 136 and the display 148 is coupled to the surgical handpiece assembly 62. and provides power to the display 148.

[0091] 55-66 illustrate surgical handpieces according to other exemplary configurations of the measurement module 128. In at least some respects, the configurations shown in FIGS. The configuration is the same as that described above, and the same numbers indicate the same components. In the configuration described below, the bushing 132 includes a measurement coupler 326. In this embodiment, any of the features described above with respect to other embodiments of the measurement module 128 may be used. For example, the electrical connector 3 described above can be used in conjunction with the The configuration of 22, 356 can be used with any configuration of the measurement module 128.

[0092] As shown in FIG. 56, the measurement housing 138 is adapted to allow the measurement module 128 to be mounted on the surgical hand. When coupled to the surgical handpiece assembly 62, the proximal surface 342 contacts the surgical handpiece assembly 62. The implant 30 includes a body portion 340 having a proximal region configured to face the implant 62.

[0093] As shown in FIG. 57, the measurement module 128 is partially received in a measurement housing 138. The bushing 132 is in contact with the proximal face 342 of the measurement housing 138. and a distal end opposite the proximal end along a measurement axis MX. Adjacent the proximal end, the bushing 132 includes a proximal portion 358 that includes a bore 360 ​​of a first inner diameter. In the configuration shown in FIG. 57, the proximal portion 358 of the bushing 132 is connected to the measurement coupler 326. As discussed above and shown in the configuration of FIG. 57, the measurement coupler 326 includes a bayonet The bayonet mount 330 may be a "J-slot" as described above. and a "J-slot" 334 that receives a protrusion 364 on the motor housing 85 (see FIG. 60). and another slot 362 opposite the slot 362 of the handpiece coupler 30. 2 to aid in radial alignment.

[0094] The proximal portion 358 of the bushing 132 is configured to abut against the motor housing 85. (See Figures 50 and 51.) The proximal portion 358 of the bushing 132 is secured to the motor housing. 85 to assist in aligning the measurement axis MX with respect to the handpiece axis AX. By aligning the measurement axis MX with the axis AX of the measurement piece, the measurement module 12 8 is coupled to the surgical handpiece assembly 62 and during a surgical procedure. During axial movement of the cannula 134, the depth cannula 134, the drive cannula 114, and The bushing 132 also reduces the adhesion that may occur between the proximal portion 3 and the drill bit 66. 3, the distal portion 358 includes a bore 368 between the distal end 358 and the proximal portion 358 that communicates with the bore 360 ​​of the proximal portion 358. 66. The bore 368 of the distal portion 366 has a second inner diameter that is smaller than the first inner diameter. The bore 368 of the distal portion 366 is approximately the outer diameter of the outer surface of the depth cannula 134. 132 and helps maintain the concentricity of the depth cannula 114 relative to the measurement axis MX. It is sized as follows:

[0095] As best seen in FIGS. 60 and 64, the proximal portion 358 of the bushing 132 is 132. The proximal portion 358 of the casing 132 defines one or more recesses 370 in communication with the bore 360. Each of the one or more recesses 370 may receive a portion of the motor housing 85. Accordingly, the radial alignment of the bushing 132 relative to the surgical handpiece assembly 62 is It also assists in aligning the measurement axis MX with the handpiece axis AX. In the illustrated configuration, the proximal portion 358 of the bushing 132 has four recesses 356. Define 70.

[0096] In one configuration shown in FIGS. 58, 59, and 66, the distal portion 366 of the bushing 132 At least one of the depth cannula 134 and the distal portion 366 of the bushing 132 and one or more protrusions extending toward the other of the depth cannula 134. The protrusions or protrusions are inserted into the bore 368 of the distal portion 366 of the bushing 132 and into the surgical hub 366. Depth within bore 352 of distal portion 118 of drive cannula 114 of endpiece assembly 62 The cannula 134 may be configured to assist in centering the cannula 134. In another embodiment, each of the one or more protrusions may comprise an annular ring. 1, one or more protrusions 372 are radially disposed about the bushing 132. The protrusions 372 each include an individual protrusion 376 (see FIG. 66). Although shown at the distal end of bushing 132, it may be located elsewhere along bushing 132. For example, one or more protrusions 372 may be provided on the measurement module. Positioned directly below the gear 146 of 128, the depth cannula 134 is aligned along the measurement axis MX. When moving along the depth cannula 134, the gear 146 moves in a consistent manner against the teeth of the depth cannula 134. The projections 372 may be formed in the bushing 132 to help maintain a tight interlocking engagement. Two, three, or more axially extending ribs spaced apart at a depth and surrounding the cannula 134. In certain embodiments, the protrusions 372 on the bushing 132 may be in the form of The depth of the cannula 134 is spaced apart so as not to interact with the teeth.

[0097] Additionally, the depth cannula 134 may have one or more protrusions extending outwardly from its outer surface. The one or more protrusions 373 may be disposed between the bushing 132 and the drive shaft 134. The bores 360, 368 of the bushing 132 are abutted against at least one of the movable cannulas 114. 134. The cannula 134 is configured to center the cannula 134 in the The depth cannula 134 is centered in the bore 352 of the drive cannula 114. In one configuration shown in FIG. 59, a 1-portion extending outwardly from the outer surface of the depth cannula 134 is The plurality of protrusions 373 include an annular ring 374. In the depth cannula 134, one or more protrusions 37 extend outwardly from the outer surface thereof. 3 cooperates with one or more projections 372 extending into the bore 368 of the bushing 132. , the depth of the bore 368 of the bushing 132 and the bore 352 of the drive cannula 114. The bore of the bushing 132 is configured to assist in centering the newlens 134. 352 and the center of the depth cannula 134 in the bore 368 of the drive cannula 114 The coupling is performed when the measurement coupler 326 is coupled to the handpiece housing assembly 74. Loosening of the joint between the depth cannula 134, the drive cannula 114, and the drill bit 66 The two sets of projections as described above (one set of projections on the bush 132 and the other set of projections on the depth Using a set of protrusions on the cannula 134) may occur when there is only one set of protrusions. This is particularly advantageous since hinging is limited. The projections 372, 373 may be of any suitable shape. The number of protrusions may be one, two, three, four or more. The protrusions 372 and 373 are arranged so that the cannula 134 can be attached to the protrusions 372 and 373 at a depth. 3. The bearing 360 is sized and positioned to move within bore 368 of bushing 132. Also, the depth cannula 134 has two sets of projections, one axially spaced from the other. Similarly, the bushings 132 may be spaced axially apart from one another. It is contemplated that the stud may have two sets of protrusions.

[0098] As shown in FIGS. 62 and 63, the measurement module 128 is coupled to a gear 146. The proximal end of the depth cannula 134 is biased to a biased position on the distal end side of the bushing 132. The gear 146 is provided with a biasing mechanism 378 configured to bias the gear 146 to rotate in one direction. In the illustrated configuration, the biasing mechanism 378 comprises a torsion spring. , the displacement sensor assembly 13 for the measurement function associated with the depth cannula 134 6 to generate an accurate signal. The smooth (non-contact) movement aids in proper operation of the biasing mechanism 378. Additionally, the biasing mechanism 378 properly returns the depth cannula 134 to its biased position during the surgical procedure. Otherwise, the resulting signal may not reflect the exact position of the depth cannula 134. However, the position of the depth cannula 134 may be in an unsuitable position for surgery as a result of the joining. There is a possibility that this will happen.

[0099] Of course, in certain embodiments, the depth cannula 134 may be a measurement housing. 138 and the surgical handpiece assembly 62. In other words, the depth cannula 134 does not limit the drilling depth. cannula 134 relative to the bone or plate. In other words, the depth cannula 134 is not coupled to any actuator. While working alone to provide a measurement function for the final drilled hole, It's impossible to avoid pushing it in too much.

[0100] As shown in Figures 56, 61 and 64, the measurement housing 138 is When coupler 302 is coupled to measurement coupler 326, surgical handpiece assembly 6 2 (see Figures 55, 60, and 61) to connect the surgical hand An electrical connector 38 for transferring power between the piece assembly 62 and the measurement module 128 56, 61, and 64, the measurement module 128 The electrical connector 380 includes three electrical terminals 382 and is connected to the surgical handpiece assembly. 62 is electrically connected to the measurement module 128 via the surgical handpiece assembly 6 2. Three corresponding terminal contacts 38 configured to make electrical contact when coupled to the In the illustrated configuration, the electrical terminal 382 is engaged with a terminal contact 384. In this case (see FIG. 61), the terminal contact 384 applies a force against the biased terminal 382. 382 to assist in proper engagement of the terminals 382 with the terminal contacts 384. The three electrical terminals 382 are configured to be biased toward the measurement housing 138. 3, extending from the proximal surface 342 of the body portion 340 and spaced radially from the bushing relative to the measurement axis MX. More specifically, a group of three electrical terminals 382 are spaced apart from each other by the bayonet mount 330. The slots 334, 362 are spaced apart from each other in the radial direction by an equal distance. The three electrical terminals 382 are arranged so that they are connected to each other. The electrical terminal for signal transmission is connected to the measurement module 12. 8 and the surgical handpiece assembly 62. In some configurations, the measurement module 128 and the surgical handpiece The number of terminals and terminal contacts in the sensor assembly 62 is two or less. In this configuration, the measurement module 128 and the surgical handpiece assembly 62 are and the number of terminal contacts is four or more. Connector 380 is configured to receive power from surgical handpiece assembly 62. The electrical connector of the measurement housing 138 is connected to the displacement sensor assembly 136 and and a display 148, the measurement coupler 326 is coupled to the surgical handpiece assembly. When coupled to the actuator 62, the displacement sensor assembly 136 and the display 148 are powered. Supplying power.

[0101] Naturally, the protrusions shown in Figures 58, 59, and 66 are not included in the above measurement model. The present invention may be adapted for use in conjunction with any of the other embodiments of the present invention. It should also be understood that any of the embodiments of the measurement module 128 may be used in conjunction with any of the embodiments described herein. The surgical handpiece assembly 62 may be adapted for use with any of the good.

[0102] Another option is to reprocess and reuse the depth measurement module. This use may include obtaining a used measurement module. The measurement module may include use in contact with a patient during a surgical procedure. During use, one or more components of the measurement module may become contaminated and may cause The term contamination refers to any residual In certain embodiments, the components include gears and Contamination of multiple teeth in the cannula and depth is possible. The used measurement module may have the above mentioned measurement module attached. The various embodiments may include any combination of the components described above. Any of the components of the measurement module may become contaminated.

[0103] The reprocessing method comprises disassembling at least two components of the measurement module from one another. The at least two components may further include a depth cannula. Any components of the measurement module, such as wheels, gears, measurement housings, bushes, displays, etc. The disassembly step may include removing the measurement hand from the depth cannula and gear. The disassembling step may include separating the depth cannula from the gear. The disassembling step may include removing the bushing from the measurement housing. The disassembly step may include separating two components of the measurement housing. Cutting steps or joints where components are secured together by welding or adhesive Destruction of the measurement housing by a destructive step separates the housing into two components Of course, depending on the degree of contamination of the measurement module, Any of these decomposition steps may be performed alone or in combination. or in combination.

[0104] After the decomposition step is completed, the method may include one or more washing steps. One possible cleaning step is the cleaning of contaminated depth cannulas. A possible cleaning step is the cleaning of contaminated gears. Another possible cleaning step is , cleaning of the measurement housing. Yet another possible cleaning step is cleaning of the display. This reprocessing method also includes removing the bushing and / or the measurement housing or This may include cleaning of the measurement coupler located on the bush. However, one or more cleaning steps are performed before one or more decomposition steps. It may be so arranged.

[0105] The type of cleaning for each component of the measurement module is not particularly limited, and may be a mechanical cleaning step. For example, the chemical step may be Components are subjected to an enzymatic cleaning process, an ultrasonic cleaning process, or a combination of these. The depth cannula, bushing, and / or gear may include: The cleaning step may be performed by immersing the cleaning material in one or more cleaning steps. Removal of tissue from within the teeth of a depth cannula, removal of tissue from within the teeth of a gear, or It may also include a combination of specific components, such as a display or controller. These components may not be able to withstand aggressive cleaning steps. If so, cleaning should include wiping the surface with a cleaning antibacterial wipe, which may be alcohol-based. Of course, these steps can be modified depending on the degree of contamination of the measurement module. Any of the above may be performed alone or in combination. It may be as follows.

[0106] The reprocessing method may further include the step of reassembling the measurement module. One or more components of a used measuring module cannot be effectively cleaned. If the product is not able to be used properly, if it is damaged during use, or during one or more of the disassembly steps If damaged or otherwise unusable, the measurement module may be It may be adapted to be reassembled using a number of new components. The new components that can be used during the construction step are not particularly limited, and the following are exemplary components: Components include new depth cannula, new gears, new bushings, new displacement Sensor assembly, new measurement housing, new controller, new display, or a combination thereof. In certain cases, the washed components One or more of the new components are regenerated using one or more of the It may be adapted to be assembled.

[0107] For example, the reassembly step may consist of one cleaned gear and one cleaned depth cannula. Alternatively, the method may include reassembling the measurement module using a cleaned Reassemble the measurement module using both the depth measurement cannula and the cleaned gear. Alternatively, the reassembly step may be performed in conjunction with the step of producing a new measurement house. A new measurement housing is used to measure two or more components that make up the housing. The reassembly step may include reassembling the fixed module. The method may further include reassembling the measurement module with the display. Alternatively, the reassembly step includes reassembling the measurement module with the cleaned bushing. Alternatively, the reassembly step may include using a new bushing. The reassembly step may include reassembling the measurement module. In this case, a new or cleaned depth cannula is inserted into the new gear or It is also conceivable that the gears may be placed in meshing relationship with the old gears. It is also conceivable that the new gears or the cleaned gears may be placed in meshing relationship with the old gears. The gear and the new or cleaned depth cannula are at least partially It is also possible that a new or cleaned housing may be reassembled as shown in the figure. The reassembly step can be performed on a new or used measurement housing. The reassembly step may include gluing or welding the components together. The method may further include securing the bushing to the measurement housing.

[0108] The reprocessing method further includes the step of sterilizing the reassembled measurement module. The type of sterilization is not particularly limited, and in certain cases, ethylene oxide gas may be used. Optionally, the method includes sterilizing the reassembled measurement module using an autoclave. Other types of sterilization are becoming available, such as bacterial or gamma sterilization processes. In certain embodiments, the measurement module may be sterilized after reassembly. The components of the measurement module may be sterilized prior to reassembly. It is considered that

[0109] In many of the drawings described herein, for convenience and ease of illustration, a surgical handpiece is shown. It should be noted that certain components of the endpiece system 60 have been removed. do.

[0110] Although surgical handpiece systems are intended for surgical applications, they can also be used for non-surgical applications. It should be noted that this is possible.

[0111] In addition, it should be understood that the terms "include, The term "comprise, comprises, and "and comprising" has the same meaning as "comprising" in this specification. In the book, "first," "second," and "third" Terms such as " and " are used without limitation for purposes of clarity and consistency, and are not intended to limit or limit the scope of the invention. Used to distinguish characteristics and components.

[0112] In the above description, several configurations have been discussed. However, the configurations discussed in this specification are It is not intended to be exhaustive or to limit the invention to any particular form. The terms are intended to be in the nature of words of description rather than of limitation. Many modifications and variations are possible and the invention may be practiced otherwise than as specifically described. obtain.

[0113] The invention is defined in the independent claims, particular features of which are set out in the dependent claims. The subject matter of a claim which is dependent on one independent claim can also be implemented in relation to another independent claim.

[0114] In addition, the present disclosure relates to a method for manufacturing a semiconductor device, comprising: The present invention includes the following features which may be implemented, with particular features being recited in the dependent claims. I. A drill bit that is releasably attached to a drive assembly of a surgical instrument. hand, a shank extending along an axis between a proximal end and a distal end; a cutting tip adjacent a distal end of the shank; An outermost interface disposed between the proximal end and the distal end and spaced from the axis by a first interface distance. An interface having a drive section, the outermost drive section having an outer drive surface that does not face the shaft. The interface and A resilient arm having an outer arm surface that extends from the proximal end of the shank to the arm end and does not face the axis. It is a team. The outer arm surface is spaced apart from the axis at a first arm distance greater than the first interface distance. a spaced first location; A second arm distance smaller than the first arm distance is a second arm distance at which the outer arm surface is spaced from the axis. Position 2 and a resilient arm that is movable relative to an axis between Equipped with a drill bit. II. The device according to item 1, wherein the second arm distance is equal to or less than the first interface distance. Lil bit. III. The outer arm surface of the elastic arm and the outer drive surface of the outermost drive of the interface each of which is spaced apart from the axis by substantially the same distance when the resilient arm is in the second position. A drill bit according to paragraph I or II, IV. The method of paragraphs I to III, wherein the interface has a generally polygonal profile. 13. The drill bit according to any one of claims 1 to 12. V. The drill according to paragraph IV, wherein the interface has a generally hexagonal profile. Rubit. VI. When the elastic arm moves from the first position to the second position, the drill bit The arm end includes an alignment element configured to facilitate at least partial rotation about an axis. The drill bit according to any one of paragraphs I to V, further comprising: VII. Item V, in which the alignment element of the resilient arm includes at least a portion of the outer arm surface Drill bit as described in I. VIII. The alignment element of the resilient arm is a pair of planar arms adjacent the outer arm surface. Including the MU surface, the interface includes a pair of planar surfaces; One of the planar arm surfaces is generally aligned with one of the planar surfaces when the resilient arm is in the second position. The drill bit of paragraph VI or VII, which is uniplanar. IX. End effector releasably attached to a drive assembly of a surgical instrument 1. An assembly comprising: a drill bit extending along the axis between the cutting tip and the insert; A handle having a handle bore extending along a handle axis, and a handle supported rotatably within the handle bore. A drill bit is inserted into the handle and the receptacle is held in place by the handle and limited in translation along the handle axis relative to the handle. a receiver defining a receptacle capable of receiving a cutting tip of the cutting tool. Placement and Equipped with The handle is gripped by a user so that the drill bit and the receptacle are engaged with the handle. configured to facilitate attachment of a drill bit to a surgical instrument for simultaneous rotation; The end effector assembly. X. The drill bit insertion part is A shank extending axially between a proximal end and a distal end with a cutting tip adjacent the distal end. The shank is disposed, An outermost interface disposed between the proximal end and the distal end and spaced from the axis by a first interface distance. an interface having a drive unit; A resilient arm having an outer arm surface that extends from the proximal end of the shank to the arm end and does not face the axis. It is a team. The outer arm surface is spaced apart from the axis at a first arm distance greater than the first interface distance. a spaced first location; A second arm distance smaller than the first arm distance is a second arm distance at which the outer arm surface is spaced from the axis. Position 2 and a resilient arm that is movable relative to an axis between Equipped with A resilient arm is provided to mount the drill bit end effector assembly to the surgical instrument. The resilient arm moves from a first position to a second position in response to a force applied to the handle during the operation. and configured to facilitate at least partial rotation of the drill bit about an axis when the drill bit is rotated. The end effector assembly according to claim IX, further comprising an alignment element at the end of the arm. Li. XI. At least a portion of the tip protection device is elastically deformable, as described in paragraphs IX or X. The end effector assembly. XII. The receiver is configured to receive drill bit cutting tips of different sizes. Also, the end effector assembly described in any one of items IX to XI. XIII. The drill bit is made of a ferromagnetic material; The tip protector further comprises a magnet capable of retaining the cutting tip of the drill bit within the receptacle. Also, the end effector assembly described in any one of items IX to XII. XIV. End effector releasably attached to a drive assembly of a surgical instrument 1. A thermal assembly comprising: a drill bit extending along the axis between the cutting tip and the insert; The drill bit is secured to the cutting tip so that the user can manipulate the drill bit without coming into contact with the cutting tip. a tip protector removably coupled to the cutting tip of the An end effector assembly comprising: XV. A surgical instrument having a drive assembly, a removable insertion section and a tip protection device 1. A method for mounting a drill bit having a cutting tip coupled to a cutting hole, the method comprising: Gripping a tip protection device; When the drill bit is coupled to the drive assembly, the drill bit is Inserting the drill bit insert into the surgical instrument so that it rotates at least partially and, A method comprising: XVI. The step of inserting the drill bit insert into the surgical instrument includes: Rotating the receiver of the tip protection device that holds the tip relative to the handle of the tip protection device The method of claim XV, comprising: XVII. Further limiting axial movement of the drill bit relative to the tip protector The method of claim XV or XVI, XVIII. A surgical instrument for use with a drill bit extending along an axis, the instrument being releasably attaches the drill bit by moving it axially from the A surgical instrument having a gripping surface that can be easily adapted to grip the surgical instrument, A handpiece body, A drill bit is supported within the handpiece body and is rotatable axially relative to the surgical instrument. a drive assembly including a drive cannula configured to be secured to the drive assembly; Release mechanism configured to facilitate removal of the drill bit from the drive assembly and, A surgical instrument comprising: XIX. A release mechanism releases the drill bit from the drive assembly by axial translation. The surgical instrument according to paragraph XVIII, comprising a sliding element configured to facilitate removal. Ingredients. XX. The sliding element of the release mechanism engages with the resilient arm of the drill bit to reduce the resilient arm's The present invention relates to a method for manufacturing a vehicle having a vehicle body, the method comprising: The surgical instruments described. XXI. The sliding element of the release mechanism further comprises a pocket; The release mechanism is a spherical guide supported within a pocket of the sliding element; a release body having a helical slot extending along and around an axis; a collar having color channels facing each other on an axis; Further equipped with A spherical guide runs along a spiral slot formed in the release body and is guided by a collar Axes respond to rotation of the color around an axis by translating along the selected color channel. The sliding element is adapted to facilitate translation along the axis of the drill bit so that the drill bit can be removed from the surgical instrument. The present invention provides a method for manufacturing a drill bit, comprising the steps of: Surgical instruments. XXII. A shank extending along an axis between a proximal end and a distal end; a cutting tip adjacent a distal end of the shank; An interface disposed between the proximal end and the distal end, the interface being spaced apart from each other. a first outermost drive section and a second outermost drive section that define a maximum drive dimension of the interface; , the first outermost drive section is spaced from the shaft by a first interface distance, and the second outermost drive section is an interface spaced from the axis by a second interface distance; and an outer arm surface extending from the proximal end of the shank to the arm end and not facing the axis; a first outermost drive portion and a second outermost drive portion, the first outermost drive portion and the second outermost drive portion being disposed radially about the axis; a resilient arm having a mating retaining surface; At a first position where the outer arm surface is spaced from the axis by a first arm distance, the retaining surface is at a first maximum The first arm distance is a first interface when radially aligned with the outer drive. the distance between the first and second outermost drives is greater than the distance between the first and second drives, and the retaining surface is radially aligned with the second outermost drive. a first position, where one arm distance is greater than a second interface distance; a second arm distance from the axis that is smaller than the first arm distance; At position 2, the second arm is engaged with the first outermost drive when the retaining surface is radially aligned with the first outermost drive. The interface distance is equal to or less than the first interface distance, and the support surface is radially in contact with the second outermost drive portion. the second arm distance is less than or equal to the second interface distance when aligned with the A second position; a resilient arm that is movable relative to an axis between Drill bit with. XXIII. The first interface distance and the second interface distance are Term XX includes a common distance that the outermost drive unit and the second outermost drive unit are each spaced from the axis. The drill bit according to II. XXIV. A shank extending along an axis between a proximal end and a distal end; a cutting tip adjacent a distal end of the shank; An interface disposed between the proximal end and the distal end, the interface being spaced apart from each other. At least two outermost drive sections define a maximum drive dimension of the interface, The drives are each separately attached to an interface that is spaced from the axis by a first interface distance. and an outer arm surface extending from the proximal end of the shank to the arm end and not facing the axis; a retainer facing the distal end and radially aligned about the axis with one of the outermost drives; a resilient arm having a surface; The outer arm surface is spaced apart from the axis at a first arm distance greater than the first interface distance. a spaced first location; A second arm distance that is smaller than the first arm distance and is equal to or smaller than the first interface distance. a second position in which the outer arm surface is spaced from the axis; a resilient arm that is movable relative to an axis between Drill bit with. XXV. The drill according to paragraph XXIV, wherein the interface includes at least four planes. Rubit. XXVI. The drill bit of paragraph XXV, wherein the interface includes six flat surfaces. XXVII. The interface includes at least four corners, two of which are The drill bit of any one of paragraphs XXIV to XXVI, defining an outermost drive portion. XXVIII. The method according to claim XXVII, wherein the interface includes at least six corners. Drill bits included. XXIX. The interface includes a plurality of drive lobes, and two of the drive lobes are A drill bit according to any one of paragraphs XXIV to XXVIII, which defines an outermost drive part. to. XXX. The driver according to paragraph XXIX, wherein the plurality of driving lobes includes four or more driving lobes. Rubit. XXXI. One of the elastic arm and the driving lobe intersects with the axis to form the second lobe of the elastic arm. a common bisecting surface defining one equal portion of the outermost drive portion and two equal portions of the outermost drive portion; Item XXIX: A drill bit. XXXII. The resilient arm is further defined as a first resilient arm; a second outer arm surface extending from the proximal end of the shank to the second arm end and not facing the axis; , facing the distal end of the shank and aligned radially around the axis with one of the outermost drive parts. and a second retaining surface disposed on the second resilient arm, The first and second elastic arms each include Each outer arm surface is spaced from the axis at each first arm distance greater than the first interface distance. each first location spaced apart from the Each second arm is smaller than each first arm distance and is equal to or smaller than the first interface distance. a second position at which each outer arm surface is spaced from the axis by a distance; The drill according to any one of claims XXIV to XXXI, which is movable relative to an axis between Rubit. XXXIII. The elastic arm is at least 10 mm from the proximal end of the shank to the end of the arm. A drill according to any one of paragraphs XXIV to XXXII, which is partially extended apart. bit. XXXIV. Clause XX, in which the resilient arm has a finger portion at the end of the arm that provides a holding surface. A drill bit according to any one of claims IV to XXXIII. XXXV. The finger portion forms an inclined surface configured to bend the elastic arm toward the shaft. The drill bit according to paragraph XXXIV. XXXVI. The interface has a distal end and a proximal end and an interface between the interface distal end and the interface proximal end. An interface length is defined, The retaining surface is spaced from the proximal end of the interface by a retaining distance equal to or greater than the interface length. 2. A drill bit according to any one of paragraphs XXIV to XXXV. XXXVII. The interface has a distal end and a proximal end. and extending along the axis between the interface distal end and the interface proximal end. An interface length is defined; The shank has a shank length defined between a distal end and a proximal end, and an interface length 3 times or more of the shank length of the Drill bits included. XXXVIII. Cannulated, any one of items XXIV to XXXII Drill bit as described. XXXIX. Any of paragraphs XXIV to XXXVIII which is a twist drill bit. 2. The drill bit according to claim 1. XXXX. The elastic arm and one of the outermost drive parts are mutually radially aligned with respect to the axis. A drill according to any one of paragraphs XXIV to XXXIX, positioned within 15° bit. XXXXI. One of the holding surface and the outermost drive part intersects with the axis and connects two of the elastic arms and a common bisecting surface that defines two equal parts of the outermost drive part. A drill bit according to any one of claims XXIV to XXXX. XXXXII. A shank extending along an axis between a proximal end and a distal end; a cutting tip adjacent a distal end of the shank; An interface disposed between the proximal end and the distal end, the interface being spaced apart from each other. At least two outermost drive sections define a maximum drive dimension of the interface, The drives are each separately attached to an interface that is spaced from the axis by a first interface distance. and an outer arm surface extending from the proximal end of the shank to the arm end and not facing the axis; a retaining surface facing a distal end of the resilient arm; The outer arm surface is spaced apart from the axis at a first arm distance greater than the first interface distance. a spaced first location; A second arm distance that is smaller than the first arm distance and is equal to or smaller than the first interface distance. a second position in which the outer arm surface is spaced from the axis; a resilient arm that is movable relative to an axis between Equipped with The support surface includes a first bisecting surface that intersects the axis to define two equal portions of the support surface. fruit, One of the outermost drives intersects with the axis to define two equal portions of the outermost drive. a second bisecting surface, The second bisecting surface is spaced radially from the first bisecting surface by about 60° about the axis. Rubit. XXXXIII. A shank extending along an axis between a proximal end and a distal end; a cutting tip adjacent a distal end of the shank; An interface disposed between the proximal end and the distal end, the interface being spaced apart from each other. At least two outermost drive sections defining a maximum drive dimension of the face, each of the interface portions being spaced apart from the axis by a first interface distance; and are diametrically spaced from one another relative to the axis to define a minimum interface dimension. At least two outer non-driving portions radially spaced apart from the two outermost driving portions about the axis. The interface and an outer arm surface extending from the proximal end of the shank to the arm end and not facing the axis; a retainer facing the distal end and radially aligned about the axis with one of the outermost drives; a resilient arm having a surface; The outer arm surface is spaced apart from the axis at a first arm distance greater than the first interface distance. a spaced first location; A second arm distance that is smaller than the first arm distance and is equal to or smaller than the first interface distance. a second position in which the outer arm surface is spaced from the axis; a resilient arm that is movable relative to an axis between Drill bit with. XXXXIV. Item XXXXIII, in which the interface includes at least four planes The drill bit according to claim 1 . XXXXV. The interface includes at least four corners, two of which are The drill bit of paragraph XXXXIII or XXXXIV, defining an outermost drive portion. XXXXVI. The interface includes multiple drive lobes, and two of the drive lobes The drive according to any one of paragraphs XXXXIII to XXXXV, wherein one defines the outermost drive part. Lil bit. XXXXVII. The multiple drive lobes include four or more drive lobes, Item XXXXVI The drill bit according to claim 1 . XXXXVIII. The resilient arm is further defined as a first resilient arm; a second outer arm surface extending from the proximal end of the shank to the second arm end and not facing the axis; , facing the distal end of the shank and aligned radially around the axis with one of the outermost drive parts. and a second resilient arm having a retaining surface in contact with the second resilient arm, The first and second elastic arms each include At each first arm distance greater than the first interface distance, each outer arm surface is aligned with the axis. each first location spaced apart from the Each second arm is smaller than each first arm distance and is equal to or smaller than the first interface distance. a second position where each outer arm surface is spaced from the axis by a distance of 1 mm; Any one of the items XXXXIII to XXXXVII, which is movable about an axis between Item 14. A drill bit as described in item 13. XXXXIX. The resilient arm is at least 15 mm from the axis, from the proximal end of the shank to the end of the arm. Partially extending away from any one of items XXXXIII to XXXXVIII Drill bit as described. L. Clause XXXXIX, in which the resilient arm has a finger portion at the end of the arm that provides a holding surface. The drill bit according to claim 1 . LI. The finger portion forms an inclined surface configured to bend the elastic arm toward the axis; A drill bit as described in paragraph L. LII. A shank extending along an axis between a proximal end and a distal end; a cutting tip adjacent a distal end of the shank; A small interface distance is disposed between the proximal end and the distal end and is spaced from the axis by a first interface distance. an interface having at least one outermost drive; an outer arm surface extending from the proximal end of the shank to the arm end and not facing the axis; Outermost drive at an angle of approximately 0°, 60°, 120°, or 180° facing the distal end a retaining surface aligned radially about the axis relative to the resilient arm; The outer arm surface is spaced apart from the axis at a first arm distance greater than the first interface distance. a spaced first location; A second arm distance that is smaller than the first arm distance and is equal to or smaller than the first interface distance. a second position in which the outer arm surface is spaced from the axis; a resilient arm that is movable relative to an axis between Drill bit with. LIII. A method of preparing a depth sensing measurement module for reuse, comprising: A measurement module used in the past, A measurement housing; a measuring housing connected to said measuring housing and extending along at least a portion of said length; a depth cannula having a plurality of teeth arranged in a line; A gear rotatably connected to the measurement housing, and the rotation and depth of the gear a gear disposed in meshing engagement with a plurality of teeth such that movement of the cannula is directly proportional; a displacement sensor assembly configured to generate a signal in response to movement of the gear; a display coupled to the measurement housing; and a depth cannula and a gear are contaminated by residual biological material. and acquiring a measurement module disposed on one or more of the number of teeth and gears. And, Disassembling at least two components of the measurement module from one another; Cleaning at least one of the contaminated depth cannula and the contaminated gear; , Reassemble the measurement module using either the cleaned gear or the cleaned depth cannula. To set up and sterilizing the reassembled measurement module; and A method comprising: LIV. Cleaning both the contaminated depth cannula and the contaminated gear; Reassemble the measurement module using both the cleaned depth measuring cannula and the cleaned gear. To set up sterilizing the reassembled measurement module; and The method of claim LIII, further comprising: LV. The step of disassembling the measurement module removes contaminated depth cannulas and contaminated and separating the measuring housing from the attached gear wheel. method. LVI. The method further includes providing a new depth measuring cannula and reassembling the measuring module. The step of assembling includes assembling the measurement model using the cleaned gear and a new depth measuring cannula. The method of any one of paragraphs LIII to LV, comprising reassembling the module. . LVII. Reassembling the measurement module further includes providing a new measurement housing. The step of assembling includes reassembling the measurement module with a new measurement housing. The method of any one of paragraphs LIII to LVI, comprising: LVIII. Reassembling the measurement module, further including providing a new display The step of assembling includes reassembling the measurement module with a new display. The method of any one of paragraphs LIII to LVII, comprising: LIX. The cleaning step removes tissue from the teeth of the depth cannula and from the teeth of the gear. or any combination thereof. 2. The method according to claim 1. LX. A previously used measurement module is present in at least one of the used depth cannulas. and a bushing surrounding the portion, the method further comprising cleaning the bushing and reassembling. The step further comprises reassembling the measurement module with the cleaned bushing. The method of any one of paragraphs LIII to LIX, comprising: LXI. Previously used measurement modules have at least one of the used depth cannulas. a bushing surrounding the portion, the method further comprising providing a new bushing; The reassembly step includes reassembling the measurement module with a new bushing. The method of any one of paragraphs LIII to LX, further comprising: LXII. The sterilization step exposes the reassembled measurement module to ethylene oxide gas. The method of any one of paragraphs LIII to LXI, comprising: LXIII. The cleaning step removes contaminated depth cannulas and contaminated gears. This includes enzymatic cleaning processes, ultrasonic cleaning processes, or a combination of these. The method according to any one of paragraphs LIII to LXII. LXIV. A previously used measurement module includes a measurement coupler, and the method includes: The method according to any one of paragraphs LIII to LXIII, further comprising washing the coupler. method. LXV. A method of preparing a reusable depth sensing measurement module, comprising: A measurement module used in the past, A measurement housing; a measuring housing connected to said measuring housing and extending along at least a portion of said length; a depth cannula having a plurality of teeth arranged in a line; A gear rotatably connected to the measurement housing, and the rotation and depth of the gear a gear disposed in meshing engagement with a plurality of teeth such that movement of the cannula is directly proportional; a displacement sensor assembly configured to generate a signal in response to movement of the gear; a display coupled to the measurement housing; and a depth cannula and a gear are contaminated by residual biological material. and acquiring a measurement module disposed on one or more of the number of teeth and gears. And, Disassembling at least two components of the measurement module from one another; releasing the teeth of the contaminated depth cannula from the contaminated gear; reassembling the measurement module with a new depth cannula; and sterilizing the reassembled measurement module; and A method comprising: LXVI. A drill bit extending along the handpiece shaft is disposed within the bore of the drive cannula. When mounted, the drive cannula and drill are each rotatable about the handpiece axis. A surgical handpiece assembly having a handpiece housing assembly supporting a bit. A measurement module for facilitating alignment to a bri, a measurement housing having a proximal region and a distal region, the proximal region having a proximal surface; A measuring device having a proximal end, a distal end, and a movable joint with respect to the measuring housing and disposed along the measuring axis. The proximal and distal regions are measured relative to the measurement housing. a depth cannula configured to move along an axis; a bore extending through the proximal and distal ends and configured to receive a drill bit; , a proximal end partially received in the measurement housing and protruding through a proximal face of the measurement housing; and a bushing extending along the measurement axis between the distal end adjacent the distal region of the measurement housing. can be, a bore configured to receive a depth cannula; one or more projections extending into the bore of the bushing; A bush having A depth cannula comprising: The handpiece is configured to be removably coupled to a handpiece housing assembly. a bayonet coupler; one or more electrical terminals extending from a proximal face of the measurement housing and spaced apart from the bushing; , a displacement sensor assembly configured to generate a signal in response to movement of the depth cannula; With Li, a display coupled to the measurement housing; A measurement module comprising: LXVII. Attached to handheld surgical instruments to provide measurement capabilities to handheld surgical instruments A measurement module for: A sensing element configured to move a distance indicative of a procedure parameter during use of the surgical instrument. a mechanical assembly having a Removably connectable to and connected to a mechanical assembly configured to detect the distance traveled by the sensing element of the mechanical assembly when a sensor assembly operatively engageable with a sensing element of the mechanical assembly; Equipped with The mechanical assembly is capable of withstanding autoclave exposure and the sensor assembly is Measurement modules that cannot withstand autoclave exposure. LXVIII. The sensor assembly includes an unencapsulated electrical component; A measuring module according to paragraph LXXVII. LXIX. If the mechanical assembly does not have electrical components, The measurement module described. LXX. A mechanical assembly comprising a first casing, a detection element being disposed within the first casing a probe disposed in the first case such that at least a portion of the probe is movable within the first case; The measuring module according to claim LXXVIII, which is configured to be arranged in a straight line with respect to the casing. Jules. LXXI. The sensor assembly is detached from the first casing of the mechanical assembly. The measuring module according to claim LXX, further comprising a removably connectable second casing. LXXII. The detection element a cannula movably coupled to the first casing; a cannula adapted to moveably couple to the cannula and rotate in response to linear displacement of the cannula; a gear configured to rotate in a direction perpendicular to the axis of rotation of the gear; Equipped with The sensor assembly includes a gear when the first casing is coupled to the second casing. and detecting a characteristic of rotation of the gear. LXXIII. A sensor assembly comprising a sensor, the sensor comprising a second casing and a first 1. The method of claim 1, further comprising: In accordance with any one of paragraphs LXXI to LXXII, The measurement module described. LXXIV. A sensor assembly comprising a circuit and a sensor coupled to the circuit, a sensor configured to provide an input signal based on a distance traveled by the sensing element, , determining a distance traveled by the detection element based on the input signal, and Section LXXIII, configured to generate a notification signal to notify a user based on distance. A measuring module as described in LXXV. A sensor assembly electrically coupled to a circuit and adapted to receive a notification signal from the circuit and configured to receive and display an indication of a distance traveled by the sensing element based on the notification signal. The measurement module of claim LXXIV, further comprising a visual indicator. LXXVI. The measurement module of claim LXXIV, wherein the sensor includes an electrical sensor. LXXVII. The sensor assembly further comprises a power receiver, the power receiver being connected to the measurement module. The power supply is adapted to receive power from a handheld surgical instrument when the power supply is coupled to the handheld surgical instrument. The measurement module according to any one of claims LXXIII to LXXVI, configured as follows: LXXVIII. A distal region, a proximal region, and a circle extending from the distal region toward the proximal region. a housing having a cylinder; A rear drive point located within the proximal region of the housing and a rear drive point located within the distal region of the housing. and a forward drive point positioned on the front of the vehicle, the forward drive point and the rear drive point being Each of the attachments or the surgical end effectors connected to the attachments a drive system capable of driving the rotor; A handheld surgical instrument comprising: LXXIX. A surgical end effector is removably coupled to a rear drive point configured to be removably coupled to a distal region of a housing of a surgical instrument when The handheld surgical instrument of claim LXXVIII, further comprising an integrated measurement module. LXXX. Driving, when the distal area of ​​the housing of the surgical instrument does not have a measuring module and a releasably connectable attachment to a forward drive point of the system. 2. A handheld surgical instrument according to claim LXXIX. LXXXI. The drive system It terminates at one end with a rear drive point and at the other end with a front drive point. a drive cannula including a distal end and rotatably disposed within the housing; A motor providing a torque; configured to amplify and transmit torque provided by the motor to the drive cannula. A gear train having a A handheld surgical instrument according to paragraph LXXX, comprising: LXXXII. The measuring module comprises a casing, a circuit arranged in the casing, and and a power receiver coupled to the circuit; The housing is adapted to receive the measurement module when the measurement module is coupled to the housing. A power source configured to supply power to a power receiver of any one of paragraphs LXXIX to LXXXI. 13. A handheld surgical instrument as described in any one of claims 1 to 12. LXXXIII. Handheld surgical instrument having proximal and distal regions with measuring module 2. A method of providing measurement capabilities to a handheld surgical instrument using a measurement module, the measurement module comprising: a mechanical assembly having a detection element; and a sensor that is removably coupled to the mechanical assembly. and a sensor assembly operable to engage a sensing element of the mechanical assembly. The method includes: coupling a measurement module to a first handheld surgical instrument; During a first surgical session, a first sensing element is moved a distance indicative of a procedure parameter. Using hand-held surgical instruments; sensing a distance traveled by the sensing element with a sensor assembly; Separating the sensor assembly from a mechanical assembly of the measurement module; discarding the sensor assembly of the measurement module after the first surgical period; During the second surgical period, the first handheld surgical instrument or a different handheld surgical instrument from the first handheld surgical instrument is inserted. Reusing the mechanical assembly of the measurement module with a second handheld surgical instrument and, A method comprising: LXXXIV. Further comprising sterilizing the mechanical assembly after the first surgical period; The method according to paragraph LXXXIII. LXXXV. Coupling the measurement module mechanical assembly with a second sensor assembly and, further comprising providing a measurement function during the second surgical period. The method according to claim XXXIV. LXXXVI. When the measurement module is coupled to a first handheld surgical instrument, Paragraph LXX further includes coupling the end effector to a proximal region of the handheld surgical instrument. The method according to any one of claims XIII to LXXXV. LXXXVII. When the first handheld surgical instrument does not have a measurement module, The present invention relates to a method for treating a surgical injury, the method further comprising: The method described. LXXXVIII. A handheld surgical instrument having a housing and a drive system; An attachment removably connectable to a handheld surgical instrument and having an operational function. and A measurement module removably coupleable to a handheld surgical instrument, the measurement module having an operational function a measurement module capable of performing a measurement function associated with A modular surgical system with LXXXIX. A housing of a handheld surgical instrument includes a first coupler and a measurement module. a second coupler that is removably coupleable to the first coupler of the handheld surgical instrument; and wherein the attachment is releasably coupled to a first coupler of the handheld surgical instrument. The modular surgical system according to claim LXXXVIII, further comprising a third coupling device that can be coupled to the system. . XC. The measurement module receives only electrical energy from the handheld surgical instrument and measures A module according to paragraph LXXXVIII or LXXXIX configured to perform a function. A modular surgical system. XCI. The attachment receives only mechanical energy from the drive system to operate. The modular surgical system of claim LXXXVIII, configured to perform the functions. XCII. A drill having one or more resilient arms for engaging with a surgical handpiece 1. A surgical handpiece assembly for operating a bit, comprising: a housing assembly having a proximal region and a distal region; A motor is connected to the housing assembly for rotation and is responsive to torque from the motor. a drive element configured to rotate smoothly and configured to transmit torque to the drill bit. a drive element having a drive formed therein; adjacent the proximal end of the drive element and maintaining the axial position of the drill bit relative to the drive cannula and a support structure configured to assist one or more resilient arms of the drill bit in moving the drill bit. With face, a retaining surface proximate the proximal end of the drive element and movable to a first position and a second position relative to the retaining surface; a release assembly having a release member, the release member being adapted to release one or more of the drill bits. operatively releasing the resilient arm from engagement with the retaining surface, thereby causing the release member to a drill bit pivoting relative to the drive element in response to the drill bit moving from the first position to the second position; a release assembly configured to be movable in a direction A surgical handpiece assembly comprising: XCIII. A surgical handpiece system for performing measurement functions and surgical procedures. , a proximal region and a distal region, the proximal region including a handpiece coupler adjacent to the distal region; a handpiece housing assembly; A drive cannula is rotatably coupled to the handpiece housing assembly. A drive element extending along a longitudinal axis and configured to receive torque from a motor; a handpiece assembly comprising: Removably coupled to the handpiece housing assembly adjacent the distal region. A surgical attachment module that can By cooperating with the handpiece coupler, a surgical attachment is provided adjacent the distal region. The handpiece housing is adapted to be removably coupled to the handpiece housing assembly. A surgical attachment housing having a surgical attachment coupler configured as described above. , A surgical attachment housing is rotatably coupled to the surgical attachment housing and receives torque from the drive element. a drive shaft configured to receive the drive force to operate the end effector; a surgical attachment module comprising: Removably coupled to the handpiece housing assembly adjacent the distal region. a measurement module capable of measuring functions associated with the operation of the handpiece assembly; and comprising a measurement housing and a measurement coupler, A coupler cooperates with the handpiece coupler to couple the measurement housing adjacent the distal region. a handpiece housing assembly configured to removably couple the a measurement module; A surgical handpiece system comprising:

Claims

1. Surgical tools for transmitting torque to drill bits and surgical attachment modules A handpiece comprising: a proximal region and a distal region, the distal region being adapted to receive the surgical attachment module; a housing assembly configured to be removably coupled to the a power source disposed within the housing assembly adjacent the proximal region and configured to receive power from a power source; a motor configured to generate torque by rotating the rotor in a direction perpendicular to the rotor; a user interface coupled to the housing assembly and configured to be operated by a user; an input device; a user input device coupled to the user input device and configured to generate a signal in response to actuation of the user input device; A sensor configured as follows: a signal generating unit coupled to the sensor and the motor for receiving the signal generated by the sensor; a controller configured to operate the motor to generate a torque; a housing assembly that is rotatably coupled to the housing assembly and receives torque from the motor; the proximal end and the distal end of the actuator are configured to rotate in response to the rotation of the actuator. A drive cannula comprising: A driven portion is defined adjacent the proximal end, the driven portion receiving torque from the motor. an outer surface configured to receive the A drill bit is provided in the drill hole. The drill bit defines a bore extending along the longitudinal axis and configured to receive the drill bit. an inner surface adjacent the proximal end of the drive cannula and adapted to apply torque to the drill bit; an inner surface having a first drive portion configured to communicate with the nozzle; abutting the distal end and adapted to transmit torque to the surgical attachment module; and a second drive unit configured to be geometrically aligned with the first drive unit and the second drive unit. a drive cannula having a distal projection; A surgical handpiece comprising:

2. The outer surface of the drive cannula is generally parallel to the longitudinal axis and defines the driven portion. The surgical handpiece of claim 1 , further comprising one or more grooves defining a groove or grooves that define ...

3. The outer surface of the driving cannula extends outwardly relative to the longitudinal axis, The surgical handpiece according to claim 1 or 2, further comprising one or more protrusions constituting the protrusions. Service.

4. 2. The method according to claim 1 , wherein the inner surface has at least two flat surfaces that constitute the first drive portion.

4. A surgical handpiece according to any one of claims 1 to 3.

5. 5. The procedure of claim 4, wherein the inner surface includes six planar surfaces that define the first drive portion. For handpieces.

6. The drive cannula includes a body portion extending from the proximal end toward the distal end, the distal projection extends distally from the body portion to the distal end generally parallel to the longitudinal axis. and extending to the surgical attachment module to transmit torque by coupling with the surgical attachment module. The surgical handwheel according to any one of claims 1 to 5, further comprising a drive dog configured as follows: Do peace.

7. The drive cannula has a proximal region adjacent the proximal end and a distal region adjacent the distal end. a proximal region, the inner surface of the drive cannula at the proximal region being a first cross-sectional area defining the bore, the first cross-sectional area being in front of the drive cannula at the distal region; The inner surface has a second cross-sectional area greater than the first cross-sectional area defining the bore in the distal region. a diameter of the inner surface of the proximal region and a diameter of the inner surface of the distal region, the inner surface having a transition surface between the proximal region and the distal region, the transition surface is tapered from the distal region toward the longitudinal axis and extends through the bore.

11. The method of claim 10, further comprising: The surgical handpiece according to any one of claims 1 to 6.

8. 1. A surgical handpiece system comprising: A handpiece housing assembly having a proximal region and a distal region, A drive motor is connected to the handpiece housing assembly for rotation. the distal end of the actuator is configured to receive torque and rotate in response thereto along a longitudinal axis between the proximal end and the distal end of the actuator. a drive cannula extending through said drive cannula, said drive cannula including: a driven portion adjacent to the proximal end and configured to receive torque from the motor; With a clean exterior, a first inner surface adjacent said proximal end defining a bore extending along said longitudinal axis; an inner surface having a drive; a distal projection adjacent the distal end and including a second drive portion; a handpiece assembly comprising: The proximal end is positioned to receive torque from the first drive portion, and the distal end is positioned to receive torque from the handle. At least one of the drive cannula bores is disposed in the drive cannula so as to extend from the drive piece housing assembly. a drill bit movable to an engaged position in which both portions of the drill bit are received; a drive shaft, the distal projection being adapted to be coupled to the drive shaft; a movable portion adapted to be coupled to the handpiece housing assembly adjacent the region; a surgical attachment module adapted to receive torque from the second drive section; wherein the first drive section is geometrically different from the second drive section. A ment module; A surgical handpiece system comprising:

9. The surgical attachment module includes a sagittal saw assembly, a reciprocating saw assembly, a drill, and a sciatic saw assembly. Rill chuck assembly, reamer assembly, wire drive assembly, and deburring assembly 9. The surgical handpiece system of claim 8, comprising one of the following assemblies:

10. adjacent the distal region of the handpiece housing assembly, a measurement module removably connectable to the housing assembly, performing a measurement function associated with said drill bit when said drill bit is in said engaged position; the handpiece housing assembly is configured to a measurement coupler configured to be coupled to a measurement housing and and a depth cannula slidably coupled to the measurement module.

10. The surgical handpiece system according to claim 8 or 9, further comprising:

11. The depth cannula has an inner surface defining a bore, A receiving portion receives at least a portion of the drill bit and is adapted to engage the drill bit.

11. The surgical handpiece system of claim 10, configured to slide along a

12. The drive cannula, the depth cannula, and the drill bit are When the measuring device is in the engaged position, the measuring housing is in the handpiece housing. When the cannula is coupled to the guide assembly, the cannula is arranged concentrically. When the drill bit is in the engaged position and the measurement housing is in the handpiece When coupled to a housing assembly, the bore of the drive cannula has at least 12. The surgical handpiece system of claim 11, sized to receive at least a portion of said Stem.

13. The drive cannula includes a body portion extending from the proximal end toward the distal end, the distal projection extends distally from the body portion to the distal end generally parallel to the longitudinal axis. and extending to the surgical attachment module to transmit torque by coupling with the surgical attachment module. The surgical handpiece according to any one of claims 8 to 12, comprising a drive dog configured as follows: ndpiece system.

14. The surgical attachment module is a surgical attachment housing, The drive shaft is rotatably coupled to the distal protrusion and coupled to the drive cannula. a surgical attachment housing configured to receive torque from a surgical attachment; an output member configured to drive a drive effector; At least one of a link mechanism and a gear train coupled to the force member, The at least one of the drive mechanism and the gear train receives the drive cannula. The torque available at the drive shaft is converted by the output member into a drive force for the surgical end effector.

14. The method according to claim 8, wherein the mechanical power is converted into a usable mechanical power. Surgical handpiece system.

15. 1. A surgical handpiece system for performing measurement functions and surgical procedures, comprising:

1. A handpiece assembly comprising: a proximal region and a distal region, the proximal region being adjacent to a handpiece coupler; a handpiece housing assembly; a handpiece housing assembly having a longitudinal axis and a rotatable connection to the handpiece housing assembly; a drive cannula extending along the axis and configured to receive torque from the motor; a handpiece assembly comprising: adjacent the distal region and removable with respect to the handpiece housing assembly. a surgical attachment module operably connectable to said surgical attachment means, said surgical attachment module comprising: By cooperating with the handpiece coupler, the surgical and removing the attachment housing from the handpiece housing assembly. A surgical attachment having a surgical attachment coupler configured to be operably coupled to the surgical attachment. Housing The drive cannula is rotatably coupled to the surgical attachment housing. a drive shaft configured to receive torque from the drive shaft to move the end effector; a surgical attachment module having adjacent the distal region and removable with respect to the handpiece housing assembly. a measurement module that can be coupled to a function associated with the operation of the handpiece assembly; and a measurement housing and a measurement coupler configured to perform a measurement function as set forth above. the measurement coupler cooperates with the handpiece coupler to measure the distal region and attaching the measurement housing to the handpiece housing assembly adjacent to the a measurement module configured to be releasably coupled; and A surgical handpiece system comprising:

16. The handpiece housing assembly is coupled to the handpiece assembly. a first electrical connector coupled to a power source for a measurement device, the measurement housing including: The handpiece coupler is coupled to the measurement coupler by engaging an electrical connector. When the handpiece housing assembly is connected to the measurement housing, power is supplied between the handpiece housing assembly and the measurement housing.

16. The surgical handpiece of claim 15 further comprising a second electrical connector configured to communicate Dopiece system.

17. The drive cannula has an exterior surface adjacent the proximal end defining a driven portion, The driven part has an outer surface configured to receive torque from the motor and a longitudinal axis extending along the outer surface. an inner surface defining a bore extending therethrough adjacent the proximal end of the drive cannula; a first drive portion and a second drive portion adjacent the distal end for applying torque to the surgical attachment motor; a distal projection having a second drive portion configured to communicate with the actuator; and a distal protrusion, the distal protrusion being geometrically different from the distal protrusion of the first drive portion and the distal protrusion being geometrically different from the distal protrusion of the second drive portion.

17. A surgical handpiece system according to claim 15 or 16.

18. The drive shaft is configured to be removably coupled to the second drive section. A coupler, the handpiece coupler being coupled to the surgical attachment coupler. When the surgical handpiece assembly and the surgical attachment module are 20. The surgical handle of claim 17, further comprising a coupler configured to transmit torque therebetween. Dopiece system.

19. The proximal end is positioned to receive torque from the first drive portion, and the distal end is positioned to receive torque from the handle. At least one of the drive cannula bores is disposed in the drive cannula so as to extend from the drive piece housing assembly.

18. The method of claim 17, further comprising: moving a drill bit into an engagement position in which both portions are received. Or a surgical handpiece system as described in 18.

20. The measurement module is a depth sensor slidably coupled to the measurement housing.

20. The surgical handpiece system of claim 19, comprising a catheter.

21. The depth cannula has an inner surface defining a bore, A receiving portion receives at least a portion of the drill bit and is adapted to engage the drill bit.

21. The surgical handpiece system of claim 20, configured to slide along a

22. The drive cannula, the depth cannula, and the drill bit are When the measuring device is in the engaged position, the measuring housing is in the handpiece housing. When the cannula is coupled to the guide assembly, the cannula is arranged concentrically. When the drill bit is in the engaged position and the measurement housing is in the handpiece When coupled to a housing assembly, the bore of the drive cannula has at least 22. The surgical handpiece system of claim 21, sized to receive at least a portion of said Stem.

23. A drill bit having one or more resilient arms that engage with a surgical handpiece is provided.

1. A surgical handpiece assembly for operating a surgical instrument, comprising: a housing assembly having a proximal region and a distal region; A motor is connected to the housing assembly for rotation therewith. a drive shaft extending along a longitudinal axis between a proximal end and a distal end, the drive shaft being configured to rotate in response to the rotation of the drive shaft; a cannula configured to receive the drill bit and extending in the longitudinal direction; an inner surface defining a bore extending along an axis, the inner surface being adjacent the proximal end and having a torque a drive cannula having a drive configured to transmit a force to the drill bit; adjacent the proximal end of the drive cannula and The one or more resilient arms of the drill bit are adapted to maintain an axial position of the drill bit. a support surface configured to assist the adjacent the proximal end of the drive cannula and in a first position and a second position relative to the retention surface. a release assembly having a release member movable to a position operatively disengaging the one or more resilient arms of the lil bit from engagement with the retention surface. By this, the release member moves from the first position to the second position. In response, the drill bit is adapted to move axially relative to the drive cannula. a release assembly formed thereon; A surgical handpiece assembly comprising:

24. the retention surface tapers away from the longitudinal axis in a proximal to distal direction; 24. The surgical handpiece assembly of claim 23.

25. The release member is movable along the longitudinal axis to the first position and the second position. and in the first position, the support member is spaced a first distance from the support surface and in the second position, 23. The method of claim 22, wherein the support member is spaced from the support surface by a second distance that is shorter than the first distance.

25. A surgical handpiece assembly as described in claim 24.

26. The release assembly is configured to bias the release member toward the first position.

26. The surgical handpiece assembly of claim 25, further comprising a biasing mechanism.

27. The release member abuts the one or more resilient arms of the drill bit to In the second position, the one or more resilient arms are released from the support surface.

27. The surgical handpiece assembly of claim 25 or 26, further comprising a release surface configured Yellowtail.

28. the release surface tapers away from the longitudinal axis in a proximal to distal direction.

28. The surgical handpiece assembly of claim 27.

29. The release surface abuts against the elastic arms to release the elastic arms from the holding surface.

29. The surgical handpiece of claim 27 or 28, wherein the annular surface is configured for release. Base assembly.

30. The release assembly rotates about the longitudinal axis to engage the longitudinal axis. to the first position and to the second position.

30. The surgical handpiece of claim 25, further comprising a collar. Base assembly.

31. The collar has a chuck extending parallel to and facing the longitudinal axis. and an inner surface defining a channel, the release assembly being disposed at least partially within the channel. and moves in a spiral slot defined by the housing assembly. a guide element configured to move at least partially along the front edge of the release member; The guide element is received in the spiral slot and the channel. a collar defining a recess for capturing the guide element within the collar, the collar being adapted to rotate the guide element about the longitudinal axis; and rotating the spiral slot and at least a portion of the channel. The guide element is moved along the longitudinal axis to the first position and the second position.

31. The surgical instrument of claim 30, configured to move the release member to a second position. Handpiece assembly.

32. The drive cannula has a distal end adjacent the proximal end of the drive cannula.

32. The surgical procedure of claim 23, further comprising the retaining surface on a proximal surface of the retractor. For handpiece assembly.

33. MEASUREMENT MODULE FOR FACILITATING ALIGNMENT TO A SURGICAL HANDPIECE ASSEMBLY - Patent application The handpiece assembly includes a drill bit extending along a handpiece axis. are disposed within the bore of the drive cannula and are adapted to rotate about the handpiece axis. A handpiece housing assembly supporting the drive cannula and the drill bit. It has senburi (assembly) A measurement housing, comprising: a body having a proximal region and a distal region, the proximal region having a proximal surface; a proximal region extending from the handpiece housing assembly and removable from the handpiece housing assembly; a measurement coupler configured to couple to the measurement signal; a measurement housing comprising: a proximal region of the body and the a depth configured to move the distal region along a measurement axis relative to the measurement housing; a cannula having a bore configured to receive the drill bit; When the fixed housing is coupled to the surgical handpiece assembly, the drive cannula a depth cannula configured to be at least partially received by the bore of a cannula; and, a displacement sensor assembly configured to generate a signal in response to movement of the depth cannula; With Nburi, a display coupled to the measurement housing; A portion of the measurement housing is received in the depth cannula between a proximal end and a distal end. a bushing surrounding the proximal end of the bushing and the proximal face of the measurement housing. and the bush that stretches beyond The bushing comprises: an inner surface defining a bore concentric with the measurement axis and surrounding the depth cannula; Adjacent the proximal end of the bushing is a bore having an inner diameter that approximates the inner diameter of the bore of the drive cannula. The measurement house may include a registration portion having an outer diameter sized to When the housing is coupled to the surgical handpiece assembly, the depth cannula The drive cannula and the drill bit are moved such that a constraint between the drive cannula and the drill bit is relieved. an outer surface that aligns the measurement axis with respect to a handpiece axis; A measurement module comprising:

34. At least one of the bushing and the depth cannula is The cannula has one or more protrusions extending toward the other of the cannulas, a protrusion or protrusions disposed in the bore of the bushing and in the surgical handpiece assembly; Assisting in centering of the depth cannula within the bore of the drive cannula of the 34. The measurement module of claim 33, configured to assist in:

35. a gear rotatably coupled to the measurement housing, the bushing adjacent the distal end of the bushing, the bore of the bushing and the a window communicating with an outer surface thereof for receiving at least a portion of the gear; The outer surface of the cannula is linear along at least a portion of the length of the cannula. and a gear having a plurality of teeth arranged on the gear such that the gear rotates and the a cannula disposed in meshing relationship with said plurality of teeth such that movement of said cannula in depth is directly proportional to said plurality of teeth; Item 35. The measurement module according to item 33 or 34.

36. The displacement sensor assembly is coupled to the measurement housing and is adapted to move in response to rotation of the gear. a sensor for generating a signal in response to movement of the depth cannula, the gear rotating 36. The measurement module of claim 35,

37. the proximal end of the depth cannula is coupled to the distal end of the bushing; a biasing mechanism configured to bias the gear to rotate in one direction so as to bias the gear toward the other direction.

37. The measurement module of claim 35 or 36, further comprising a mechanism.

38. When the measurement coupler is coupled to the handpiece housing assembly, an electrical connector configured to engage a complementary electrical receptacle on a surgical handpiece assembly; a connector, the electrical connector receiving electrical power from the surgical handpiece assembly; a first connector configured to connect the first displacement sensor assembly to the first input connector; a display coupled to said measurement coupler and said handpiece housing assembly; When coupled, provides power to the displacement sensor assembly and the display.

38. A measuring module according to any one of claims 33 to 37.

39. The electrical connector extends from the proximal face of the body of the measurement housing and is connected to the back plate.

39. The measurement module of claim 38, further comprising one or more electrical terminals spaced apart from the switch. Ru.

40. The one or more electrical terminals include a power electrical terminal, a ground electrical terminal, and a signal 40. The measurement module of claim 39, including electrical terminals for transmission.

41. The measurement coupler includes a bayonet coupler extending from the proximal face of the measurement housing.

41. The measuring module according to any one of claims 33 to 40, further comprising:

42. The bayonet coupler defines a bore, and the bushing is disposed in front of the bayonet coupler.

42. The measurement module of claim 41, wherein the measurement module extends through the proximal face of the measurement housing within the bore. Jules.

43. MEASUREMENT MODULE FOR FACILITATING ALIGNMENT TO A SURGICAL HANDPIECE ASSEMBLY - Patent application The handpiece assembly includes a drill bit extending along a handpiece axis. A motor disposed in a motor housing with the motor disposed in the bore of the drive cannula. Thus, the drive cannula and the handpiece are each rotatably driven about the handpiece axis. and a handpiece housing assembly supporting the drill bit, a measurement housing having a proximal region and a distal region, the proximal region having a proximal surface; a measuring device that is movably coupled to the measurement housing and includes a proximal region and a distal region; a depth cannula configured to move along a measurement axis relative to the measurement housing; a drive cannulas having a bore configured to receive the drill bit; a depth cannula configured to be at least partially received by the bore of the catheter; a displacement sensor assembly configured to generate a signal in response to movement of the depth cannula; With Nburi, a display coupled to the measurement housing; A portion is received in the measurement housing and protrudes through the proximal face of the measurement housing. a bushing extending along the measuring axis between a proximal end adjacent the distal region and a distal end adjacent the distal region; And, a bore of a first diameter adjacent the proximal end; By cooperating with a handpiece coupler of a handpiece housing assembly, the to removably couple the handpiece to the handpiece housing assembly. a proximal portion defining a slot configured therein, said proximal portion being adapted to engage said handpiece housing assembly; When coupled to the assembly, the depth cannula, the drive cannula, and the The proximal portion of the bushing is secured to the motor house so that binding between the drill bits is relieved. The bore surrounds the motor housing, thereby aligning the measurement axis with the a proximal portion configured to align with a handpiece axis; a distal end having a bore communicating with the bore of the proximal portion between the proximal portion and the distal end; and a bore in the distal portion that is smaller than the first diameter and the depth of the cannula. Maintaining the concentricity of the depth cannula relative to the bushing and the measurement axis approximately on the outer surface. a distal portion having a second diameter sized to assist in gripping the distal end of the proximal end of the distal end; A bush having A measurement module comprising:

44. At least one of the distal portion of the bushing and the depth cannula is one or more proximal and distal ends of the proximal cannula and the distal end of the proximal cannula extending toward the other of the proximal and distal cannula. a protrusion or protrusions disposed in the bore of the distal portion of the bushing; and a front end within the bore of the drive cannula of the surgical handpiece assembly.

44. The measuring device of claim 43 configured to assist in centering the cannula. Fixed module.

45. A gear rotatably coupled to the measurement housing, The distal portion is adjacent the distal end of the bushing, A bore and communication with an outer surface of the distal portion of the bushing to rotate at least a portion of the gear. The outer surface of the depth cannula defines a window for receiving the depth cannula. a gear having a plurality of teeth arranged linearly along at least a portion of its length, such that the rotation of the wheel and the movement of the depth cannula along the measurement axis are directly proportional.

44. The measurement module of claim 43, disposed in meshing relationship with the plurality of teeth.

46. The displacement sensor assembly is coupled to the measurement housing and is adapted to move in response to rotation of the gear. a sensor for generating a signal in response to movement of the depth cannula, the gear rotating 46. ​​The measurement module of claim 45,

47. the proximal end of the depth cannula is coupled to the distal end of the bushing; a biasing mechanism configured to bias the gear to rotate in one direction so as to bias the gear toward the other direction.

47. The measurement module of claim 45 or 46, further comprising a mechanism.

48. When the bushing is coupled to the handpiece housing assembly, the surgical an electrical connector configured to engage a complementary electrical receptacle on a handpiece assembly for use with the electrical connector; the electrical connector receiving electrical power from the surgical handpiece assembly. and the electrical connector is configured to receive electrical power from the displacement sensor assembly and the a display coupled to said bushing, said bushing being coupled to said handpiece housing assembly; when the power supply is turned on, power is supplied to the displacement sensor assembly and the display.

48. The measurement module according to any one of claims 43 to 47.

49. The electrical connector extends from the proximal face of the measurement housing and away from the bushing.

49. A measuring module according to claim 47 or 48, comprising one or more separate electrical terminals. Ru.

50. The one or more electrical terminals include a power electrical terminal, a ground electrical terminal, and a signal 50. The measurement module of claim 49, including electrical terminals for transmission.

51. 51. The method of claim 43, wherein the proximal portion of the bushing comprises a bayonet coupling.

13. The measuring module according to claim 1 .

52. The proximal portion of the bushing communicates with the bore of the bushing and is adapted to engage the motor housing. a surgical handpiece assembly having a first end and a second end, the first end being adapted to receive a portion of the bushing to secure the bushing to the surgical handpiece assembly; and defining one or more recesses configured to assist in radial alignment of the shoe.

52. The measuring module according to any one of claims 43 to 51,

53. MEASUREMENT MODULE FOR FACILITATING ALIGNMENT TO A SURGICAL HANDPIECE ASSEMBLY - Patent application The surgical handpiece assembly includes a drill extending along a handpiece axis. With the bits disposed within the bores of the drive cannulas, the bits are rotated about the handpiece axis. a handpiece housing supporting the drive cannula and the drill bit, the drive cannula being rotatable relative to the handpiece housing; a coupling assembly, a measurement housing having a proximal region and a distal region, the proximal region having a proximal surface; a proximal end movably coupled to the measurement housing and disposed along a measurement axis; a proximal region and a distal end, the proximal region and the distal region being connected to the measurement housing; a depth cannula configured to move along the measurement axis relative to the cannula, extending through the proximal end and the distal end and configured to receive the drill bit The bore and one or more projections extending outwardly from an exterior surface of the depth cannula; A depth cannula having A portion is received in the measurement housing and protrudes through the proximal face of the measurement housing. a proximal end of the measurement housing adjacent the distal region and a distal end of the measurement housing adjacent the distal region, the proximal end being aligned with the measurement axis; A bush extending along a bore configured to receive the depth cannula; one or more projections extending into the bore of the bushing; A bush having adjacent the proximal end of the bushing and relative to the handpiece housing assembly a measurement coupler configured to be removably coupleable; a displacement sensor assembly configured to generate a signal in response to movement of the depth cannula; With Nburi, a display coupled to the measurement housing; Equipped with The one or more protrusions extending outwardly from the outer surface of the depth cannula and configured to abut against at least one of the drive cannula and the bushing. and cooperating with the one or more protrusions extending into the bore of the bushing. Thus, when the measurement coupler is coupled to the handpiece housing assembly, The constraint between the depth cannula, the drive cannula, and the drill bit is relieved. in the bore of the bushing and in the surgical handpiece assembly so as to To aid in centering the depth cannula within the bore of the drive cannula. A measurement module configured as follows:

54. a gear rotatably coupled to the measurement housing, the bushing adjacent the distal end of the bushing, the bore of the bushing and the A window is defined in communication with the outer surface, the window receiving at least a portion of the gear. and an outer surface of the depth cannula is formed along at least a portion of the length of the depth cannula. The gear has a plurality of teeth arranged linearly along the axis, and the gear rotates and the measurement A cannula is disposed in meshing relationship with the plurality of teeth such that movement of the cannula along the axis is directly proportional to the 54. The measurement module of claim 53,

55. The displacement sensor assembly is coupled to the measurement housing and is adapted to move in response to rotation of the gear. a sensor for generating a signal in response to movement of the depth cannula, the gear rotating 55. The measurement module of claim 54,

56. the proximal end of the depth cannula is coupled to the distal end of the bushing; a biasing mechanism configured to bias the gear to rotate in one direction so as to bias the gear toward the other direction.

56. The measurement module of claim 54 or 55, further comprising:

57. When the measurement coupler is coupled to the handpiece housing assembly, an electrical connector configured to engage a complementary electrical receptacle on a surgical handpiece assembly; a connector, the electrical connector receiving electrical power from the surgical handpiece assembly; a first connector configured to connect the first displacement sensor assembly to the first input connector; a display coupled to said measurement coupler and said handpiece housing assembly; When coupled, provides power to the displacement sensor assembly and the display.

57. A measuring module according to any one of claims 53 to 56.

58. The electrical connector extends from the proximal face of the measurement housing and away from the bushing.

58. The measurement module of claim 57, comprising one or more spaced apart electrical terminals.

59. The one or more electrical terminals include a power electrical terminal, a ground electrical terminal, and a signal 59. The measurement module of claim 58, including electrical terminals for transmission.

60. 6. The method of claim 5, wherein one of the bushing and the measurement housing comprises the measurement coupler.

60. A measurement module according to any one of claims 3 to 59.

61. 61. The method of claim 53, wherein the measurement coupler comprises a bayonet coupler. The measurement module described.

62. The one or more projections extending outwardly from the outer surface of the depth cannula are 62. A measuring module according to any one of claims 53 to 61, comprising a shaped ring.

63. An engraving device releasably attached to a drive cannula of a surgical handpiece assembly.

1. A end effector assembly comprising: a drill bit extending along the axis between the cutting tip and the insert; a handle having a handle bore extending along a handle axis; and a handle rotatable within the handle bore. a receiver supported by the handle and constrained in translation along the handle axis relative to the handle a receiver defining a receptacle capable of receiving the cutting tip of the drill bit; and a tip protection device comprising: The handle is gripped by a user so that the drill bit and the receiver are The surgical handpiece attachment of the drill bit to a handle for simultaneous rotation. The end effector assembly is configured to facilitate attachment to the end effector assembly.

64. The insert of the drill bit is With the cutting tip disposed adjacent the distal end, a cutting A shank extending along the axis; A first interface distance from the axis, the first interface distance being disposed between the proximal end and the distal end. an interface having a remote outermost drive; an outer arm surface extending from the proximal end of the shank to an arm end and not facing the axis; An elastic arm having the outer arm surface at a first arm distance greater than the first interface distance; a first position in which the first position is spaced from the axis; The outer arm surface is spaced from the shaft at a second arm distance that is smaller than the first arm distance. a second position spaced from the a resilient arm movable relative to the shaft between Equipped with The resilient arm is adapted to mount the drill bit to the surgical handpiece assembly. from the first position to the second position in response to a force applied to the handle when the handle is moved and facilitating at least partial rotation of the drill bit about the axis when moved at a 64. The apparatus of claim 63, further comprising an alignment element at the end of the arm configured to: End effector assembly.

65. 65. The distal protection device of claim 63 or 64, wherein at least a portion of the distal protection device is elastically deformable.

20. An end effector assembly as described herein.

66. the receiver is configured to receive drill bit cutting tips of different sizes; 66. An end effector assembly according to any one of claims 63 to 65.

67. the drill bit is made of a ferromagnetic material; The tip protector is capable of retaining the cutting tip of the drill bit within the receptacle.

67. The end effector assembly of any one of claims 63 to 66, further comprising a magnet. Nburi.

68. An engraving device releasably attached to a drive cannula of a surgical handpiece assembly.

1. A end effector assembly comprising: a drill bit extending along the axis between the cutting tip and the insert; a cutting tip portion of the drill bit that is removably connectable to the cutting tip portion of the drill bit and that is adapted to be connected to the cutting tip portion of the drill bit by a user; A tip protector that may allow the drill bit to be operated without touching the cutting tip. An end effector assembly comprising:

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