Surgical saw blade cartridge and coupler therefor

Abstract

To provide a saw blade cartridge which reduces blade whipping.SOLUTION: A saw blade cartridge 48 includes a saw blade 28' and a cassette 50. The cassette is disposed over a proximal portion of the saw blade and includes a first cassette portion and a second cassette portion opposite each other across the proximal portion. Each portion includes a shell and a damper. The shell is of a first stiffness and has an outer surface. The damper is of a second stiffness less than the first stiffness and is disposed on the inner surface of the shell. The cassette portions are substantially fixed relative to the proximal portion and substantially aligned with each other. The shells are fixed to each other. The damper is in contact with the proximal portion. A handpiece coupler 26 for engaging either the saw blade cartridge or a saw blade includes a release button with a lock button slidably disposed therein to resist unintentional opening.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of U.S. Provisional Patent Application No. 63 / 055,5 filed July 23, 2020. No. 85, which is hereby incorporated by reference in its entirety. and is expressly incorporated herein by reference. [Background technology]

[0002] The saw blade, e.g., a sagittal saw blade, has a distal end that is inclined relative to the planar blade surface. This type of vibration is called "blade whip." There is a need for a saw blade cartridge that reduces blade whip. do. [Brief explanation of the drawings]

[0003] [Figure 1] FIG. 1 is a perspective view of a distal portion of an exemplary handpiece including an exemplary coupler receiving an exemplary sagittal saw blade. [Figure 2] 2A is a cross-sectional side view of the example coupler and blade of FIG. 1 passing through plane 2, shown in the direction of arrow 2A. [Figure 3] 2 is a perspective view of an exemplary proximal portion of the exemplary blade of FIG. 1. FIG. [Figure 4] 2 is a perspective view of a portion of the example coupler of FIG. 1 shown in an open position. [Figure 5] 2 is a perspective view of a distal portion of the exemplary handpiece and coupler of FIG. 1 receiving an exemplary sagittal saw blade cartridge. FIG. [Figure 6] 6A is a cross-sectional side view of the example coupler and blade cartridge of FIG. 5 passing through plane 6, shown in the direction of arrow 6A. [Figure 7] FIG. 7 is a perspective view of the exemplary blade cartridge of FIGS. 5 and 6. [Figure 8] FIG. 8 is a top view of the exemplary blade cartridge of FIG. 7. [Figure 9] FIG. 8 is a side cross-sectional view of the exemplary blade cartridge of FIG. 7. [Figure 10] FIG. 10 is a top view of an exemplary saw blade of the cartridge of FIGS. 5-9. [Figure 11] 11 is a plan view of an alternative exemplary saw blade to that of FIG. 10. FIG. [Figure 12] 8 is a side cross-sectional view of an exemplary blade cartridge alternative to the blade cartridge of FIG. 7. FIG. [Figure 13] 8 is a side cross-sectional view of another alternative exemplary blade cartridge to the blade cartridge of FIG. 7. FIG. [Figure 14] 8 is a side cross-sectional view of yet another alternative and exemplary blade cartridge to that of FIG. 7. FIG. [Figure 15] FIG. 1 is a perspective view of a distal portion of a handpiece including an alternative exemplary coupler receiving an exemplary saw blade cartridge. [Figure 16] FIG. 16 is an exploded cross-sectional view showing the coupler of FIG. 15. [Figure 17] FIG. 16 is a cross-sectional side view of the coupler of FIG. 15 without the blades. [Figure 18] FIG. 16 is a cross-sectional front view of the coupler of FIG. 15 without the blades. [Figure 19] FIG. 16 is a side cross-sectional view of the coupler of FIG. 15 holding an exemplary blade cartridge with an exemplary locking button in a locked position and an exemplary button, pin, and cap in an exemplary retaining position. [Figure 20] 19A is a cross-sectional front view of the coupler of FIG. 15 holding the blade cartridge of FIG. 19 with the lock button in the locked position and the button, pin, and cap in the retained position. [Figure 21]15 is a side cross-sectional view of the coupler of FIG. 15 holding the blade cartridge of FIG. 19 with the lock button in the unlocked position and the button, pin, and cap in the retained position. [Figure 22] 15 holding the blade cartridge of FIG. 19 with the lock button in the unlocked position and the button, pin, and cap in the retained position. [Figure 23] 15 is a side cross-sectional view of the coupler of FIG. 15 holding the blade cartridge of FIG. 19 with the lock button in the unlocked position and the exemplary button, pin, and cap in the exemplary released position. [Figure 24] 15 is a cross-sectional front view of the coupler of FIG. 15 holding the blade cartridge of FIG. 19 with the lock button in the unlocked position and the exemplary button, pin, and cap in the exemplary released position. [Figure 25] FIG. 16 is a side cross-sectional view of the coupler of FIG. 15 holding an exemplary blade with an exemplary locking button in a locked position and the button, pin, and cap in a retaining position. [Figure 26] 23 is a cross-sectional front view of the coupler of FIG. 15 holding the blade of FIG. 22 with the lock button in the locked position and the button, pin, and cap in the retained position. [Figure 27] 23 is a side cross-sectional view of the coupler of FIG. 15 holding the blade of FIG. 22 with the lock button in the unlocked position and the button, pin, and cap in the retained position. [Figure 28] 23 is a cross-sectional front view of the coupler of FIG. 15 holding the blade of FIG. 22 with the lock button in the unlocked position and the button, pin, and cap in the retained position. DETAILED DESCRIPTION OF THE INVENTION

[0004] The prior art has been known to include blades in either saw blades or saw blade cartridges. Does not address the desire for reduced whip.

[0005] A saw blade cartridge for use with a powered surgical saw includes a saw blade and a casing. The saw blade includes a proximal portion, a distal portion, and a blade body. The proximal portion includes a drive face and a mounting axis. The distal portion includes cutting teeth. The blade body includes The cassette is located above the proximal portion. The cassette portion includes a first cassette portion and a second cassette portion. Each cassette section includes a shell and a damper. The shell is made of a first material and has a substantially planar outer surface and an associated inner edge. and opposing inner surfaces having a groove. Each damper is made of a second material. The damper extends beyond the inner edge of the shell. The cassette portions are substantially aligned with one another and have a proximal portion. The shell is substantially fixed relative to the damper by contacting the proximal portion. , are fixed to each other. The stiffness of the shell is greater than that of the damper.

[0006] The saw blade cartridge and its features include additional features and advantages as described below. Such features and modifications may be used individually or in combination with one another. Together, they are included, and such combinations are limited only by mutual exclusivity.

[0007] The first stiffness may be greater than the second stiffness.

[0008] The damper may apply a predetermined clamping load to the proximal portion.

[0009] Both cassette parts may be substantially identical.

[0010] The shell may be formed from a first material and the damper may be formed from a second material. stomach.

[0011] The second material may be an elastomer.

[0012] The interior surface of each shell may define a receiving pocket for a corresponding damper. Each pocket may receive a corresponding damper.

[0013] Each damper may extend beyond the inner edge of its respective shell.

[0014] The shell may have a substantially arcuate shape about the mounting axis.

[0015] The drive surface may be defined by at least one of a notch and an opening.

[0016] The cassettes do not totally overlap all of the drive surfaces.

[0017] The proximal portion of the saw blade may have a first thickness and may be substantially planar. The blade body may also be substantially planar and have a second thickness.

[0018] The outer surfaces of the first cassette part and the second cassette part may be substantially planar. The cartridge may have a third thickness that is substantially uniform across the outer surface.

[0019] The shells in at least one of the first and second cassette parts are The inner edge of the casing may include a connecting tab extending beyond the casing.

[0020] The connection tab may be disposed within a connection opening in the saw blade.

[0021] The interlocking tabs may be secured to the shells of the opposing cassette portions.

[0022] The damper is compressed axially against the proximal portion of the saw blade by the shell. good.

[0023] The dampers may each define a continuous arc of at least 120 degrees.

[0024] A handheld device for engaging either a surgical saw blade or a surgical saw blade cartridge. The endpiece coupler consists of a housing head, a driver, a cup, a pin, a cap, and , a release button, a coupler spring, and a lock button. The driver defines a pivot hole about an axis. The driver is axially pivotable relative to the housing head. The driver is fixed in the direction of the shaft and pivotable about an axis. The driver defines a driver bore substantially centered on the axis. The cup includes a blade engaging prong on the first surface thereof at a position radially spaced from the axis. The cup is fixed relative to the driver so that it can move integrally with the driver. The cup has an inner wall surface substantially centered on the axis. The cup extends from the second surface of the driver. The pin extends axially into the pivot hole. The pin slides into the driver hole and into the cup. the driver hole and the cup are disposed inside the driver hole and the cup. The cap is selectively axially displaceable relative to the first end of the pin. The cap extends radially beyond the prong. A tongue is secured to the second end of the pin for selective engagement by a user. The release button defines a lock cavity therein. The outer surface of the release button defines a button wall therebetween. is disposed between the driver and the pin and biases the pin toward the closed position. The lock button is slidably disposed within the lock cavity and is The part has two locked positions and an unlocked position.

[0025] The coupler and its components and features may include additional features as described below. The present invention may include features and modifications, and such features and modifications may be used individually or together. In combination, including, such combinations are limited only by mutual exclusivity.

[0026] The lock button may comprise a portion of a position lock member, the position lock member being The lock spring may further include a lock spring disposed between the tongue and the pin, the lock spring comprising: The lock button is biased toward the locked position.

[0027] The position locking member may further include a first slider and a second slider. The tongue has an open first end of the cavity, a first slider opening, and a second slider opening. The first slider opening may be configured to slidably receive the first slider. The first slider opening may be formed in the button wall at a first axial and circumferential position. The second slider opening may slidably receive the second slider. The second slider opening is axially offset from the first position and circumferentially offset from the first position. The button wall may be penetrated at a second location offset in the forward direction.

[0028] The lock button may extend beyond the first end of the button wall in the locked position, In the unlocked position, the button may be substantially flush with the first end of the button wall.

[0029] The position locking member is attached to the inner wall surface of the cup for selective engagement by the slider. The lock button may further include a plurality of notches on its outer surface.

[0030] The plurality of notches include a first lock button receiving notch, a first cup receiving notch, and a second The first lock may include a cup receiving notch and a second lock button receiving notch. The button-receiving notch may be located on an outer surface of the lock button. The second cup receiving notch may be located on the inner wall surface of the cup. The second lock button receiving notch may be in an outer surface of the lock button.

[0031] The first slider moves together with the release button in all positions of the release and lock buttons. The slider may be at least partially disposed within the first slider opening so as to be able to move axially. The first slider may also have a release button in the first holding position and a lock button in the In the first locking position, the cup can be partially placed in the first cup receiving notch. The first slider may also include a release button that is moved from the first holding position to the first release position, and When the lock button is in the unlocked position, the first lock button receiving notch The first slider may also have a release button in the second holding position. When the lock button is in the second lock position, the first lock button receiving notch The first slider may also have a release button in the second retaining position. When the lock button is in the unlocked position, the first The second slider may be partially disposed within the lock button receiving notch. In all positions of the lock button and release button, the release button must be able to move axially with the release button. The second slider may be at least partially disposed within the second slider opening. , the release button is in the first holding position and the lock button is in the first lock position. The second slider may be partially disposed within the second cup-receiving notch. The release button is moved from the first holding position to the first release position, and the lock button When in the unlocked position, the second lock button is partially positioned within the receiving notch. The second slider may also be configured such that the release button is in the second holding position and the lock With the button in the second lock position, the second cup is partially placed in the receiving notch. The second slider may also be configured to move the release button from the second holding position to the second When the lock button is in the unlocked position, the second lock button It may be partially disposed within the tongue-receiving notch.

[0032] The first holding position is where the blade without the damper cassette is accepted by the coupler. The second holding position may be obtained when the blade cartridge including the damper cassette The signal may be obtained when the message is accepted by the coupler.

[0033] The lock button may form part of a position locking member, which may be similarly The release button may further include a first slider and a similar second slider. may have a similar first slider opening and a similar second slider opening formed therein. The similar first slider opening may slidably receive the similar first slider. The similar second slider opening may extend through the button wall. It may be slidably received or may pass through the button wall.

[0034] The position locking member is attached to the inner wall surface of the cup for selective engagement by the slider. and a plurality of notches on the outer wall surface of the lock button.

[0035] The plurality of notches include a first lock button receiving notch and a mirror image first lock button receiving notch. a first cup receiving notch, a mirror image of the first cup receiving notch, and a second cup receiving notch. a second cup receiving notch, a mirror image second cup receiving notch, and a second lock button receiving notch. The lock button may include a first lock button receiving notch and a mirror image second lock button receiving notch. The lock button receiving notch and the mirror image first lock button receiving notch are The first cup receiving notch and the mirror image first cup receiving notch may be on the outer surface. The notch may be on the inner wall of the cup. A second cup receiving notch and a mirror image The second cup receiving notch may be on the inner wall of the cup. A notch and a mirror image second lock button receiving notch are provided on the outer surface of the lock button. It's okay to have one.

[0036] The first slider moves together with the release button in all positions of the release and lock buttons. The slider may be at least partially disposed within the first slider opening so as to be able to move axially. The first slider may also have a release button in the first holding position and a lock button in the In the first locking position, the cup can be partially placed in the first cup receiving notch. The first slider may also include a release button that is moved from the first holding position to the first release position, and When the lock button is in the unlocked position, the first lock button receiving notch The first slider may also have a release button in the second holding position. When the lock button is in the second lock position, the first lock button receiving notch The first slider may also have a release button in the second retaining position. When the lock button is in the unlocked position, the first The first slider may be partially disposed within the lock button receiving notch. In all positions of the release button and lock button, the release button moves axially. The slider may be at least partially disposed within a similar first slider opening to achieve the same. The first slider is also configured such that the release button is in the first holding position and the lock button is in the second holding position. In the locked position, the cup is partially positioned within the mirror-image first cup-receiving notch. The similar first slider may also have a release button that moves the slider from the first holding position to the first release position. When the lock button is in the unlocked position, the mirror image of the first lock button is The first slider may be partially disposed within the lock button receiving notch. In addition, when the release button is in the second holding position and the lock button is in the second lock position, In some embodiments, the locking button may be partially disposed within a mirror image first locking button receiving notch. The similar first slider also has a release button that is moved from the second holding position to the second releasing position; and When the lock button is in the unlocked position, the mirror image of the first lock button is received. The second slider may be partially disposed within the notch. The second slider opening is adapted to move axially with the release button in all positions of the slider. The second slider may also be at least partially disposed within the first slider. When the second cup holder is in the holding position and the lock button is in the first lock position, The second slider may also be partially disposed within the recess. The button is moved from the first holding position to the first release position, and the lock button is moved to the unlock position. In the locked state, the second lock button may be partially disposed within the second lock button receiving notch. The slider also has a release button in the second holding position and a lock button in the second lock position. In the positioned state, the second cup may be partially disposed within the second cup-receiving notch. The slider also moves the release button from the second holding position to the second release position, When the lock button is in the unlocked position, the second lock button receiving notch A similar second slider may be located partially on the release button and lock button. A similar second slide is provided to move axially with the release button in all positions of the lever. The second slider may be at least partially disposed within the slider opening. With the release button in the first holding position and the lock button in the first lock position may be partially disposed within a mirror image second cup-receiving notch. The slider also moves the release button from the first holding position to the first release position, When the lock button is in the unlocked position, a mirror image second lock button is inserted. A similar second slider may also be positioned partially within the notch. When the lock button is in the second lock position, the mirror image is A similar second slider may be partially disposed within the second cup-receiving notch. The release button is moved from the second holding position to the second release position, and the lock When the button is in the unlocked position, it fits into a mirror image second lock button receiving notch. It may be partially arranged in

[0037] The first holding position is where the blade without the damper cassette is accepted by the coupler. The second holding position may be obtained when the blade cartridge including the damper cassette The signal may be obtained when the message is accepted by the coupler.

[0038] The slider may be a substantially rigid sphere.

[0039] Relative orientation and direction (for example, distal, proximal, superior, inferior, basal, posterior, anterior, back, posterior, outer, medial, inward, outward, lateral, left, right) as a restriction, To assist the reader in envisioning at least one embodiment of the described structure, Such exemplary orientations are from the perspective of the saw user. Good too.

[0040] The depicted components may take many different forms and may be multiple and / or alternative. The exemplary components shown are not intended to be limiting. In fact, additional or alternative components and / or implementations may be included. Further, components shown in the figures may be used in various ways, even if not explicitly described as such. Unless otherwise indicated, the drawings are not necessarily drawn to scale.

[0041] Disclosed herein is a blade cartridge for accommodating multiple blade thicknesses. The two are ridges and couplers.

[0042] As shown in FIGS. 1-4, a saw system 20, which is one form of a surgical tissue cutting system, includes: The surgical instrument includes a powered surgical saw 22 having a handpiece 24, which includes a saw blade. and a saw blade cartridge. The handpiece 24 is used to drive the sagittal saw blade and sagittal saw blade cartridge. The saw blade may be of a type used as an oscillating saw, including a type used for cutting. The handpiece 24 may have an exemplary vibration displacement range of 5 to 8 degrees. The powered surgical handpiece is the RemB™ Sagittal Saw Handpiece by Stryker. The operation of such handpieces is well known. The coupler 26 in this system has a proximal portion having one of a first thickness and a second thickness. The saw blade and the saw blade cartridge may be used to hold the saw blade and the saw blade cartridge, respectively. wherein the second thickness may be at least four times greater than the first thickness. Prior art couplers suitable for engaging only blades are available from Stryker Co. No. 7,833,241 B2 assigned to rporation, It has been described as such.

[0043] The exemplary sagittal saw blade 28, or more simply, the exemplary saw blade 28, is a proximal portion 30, a distal portion 32, and a brake disposed between the proximal portion 30 and the distal portion 32. and a blade body 34. The blade body 34 connects the proximal portion 30 and the distal portion 32. As best seen in FIG. 3, proximal portion 30 includes a drive face 36, a mounting axis 38, and a The proximal portion more specifically includes a plurality of blade openings defining a plurality of drive surfaces 36. The proximal portion 30 may also include a receiving portion 40 having a locating radial surface 44 at its end. The distal portion 32 may include a receiving slot 42. The distal portion 32 includes cutting teeth 46. Such blades are well known.

[0044] As shown in FIGS. 5-11, saw system 20 includes a powered surgical saw having a handpiece 24. sagittal saw 22 and an exemplary sagittal saw blade cartridge 48, or more briefly, an exemplary saw blade. 5 and 6. The saw blade cartridge 48 may include a saw blade holder 46. As shown in FIG. 6, the exemplary handpiece 24 includes a selectively and removably mountable This may also be done.

[0045] The saw blade cartridge 48 is shown in FIG. 10 and is substantially similar to the saw blade 28 described above. The saw blade 28' is mounted in a damper cassette, also referred to herein as cassette 50. Consistent with the above, the saw blade 28' may include a proximal portion 30 ', the distal portion 32, and the blade body 3 located between the distal portion 32 and the proximal portion 30'. 4. Distal portion 32 includes cutting teeth 46. Proximal portion 30' includes at least one The drive surface 36 includes a small number of notches and openings 40. An exemplary notch extends through the periphery of the proximal portion 30'. The opening 40 shown can be formed by extending it.

[0046] Cassette 50 includes a first cassette portion 52, a substantially identical second cassette portion 54, and The first cassette portion 52 and the second cassette portion 54 are located at the proximal portion of the blade 28'. The cassette portions 52 and 54 may be mounted on each other with the cassette portion 30' in between. are qualitatively aligned with each other and with the proximal portion of the blade 28' Each cassette portion 52, 54 is substantially fixed relative to the corresponding cassette portion 30'. The shells 56, 58 and corresponding dampers 60, 62 are included. Specifically, the first cassette portion 52 includes a first shell 56 and a first damper 60, and the second cassette portion 52 includes a first shell 56 and a first damper 60. The set portion 54 includes a second shell 58 and a second damper 62 .

[0047] Both shells 56, 58 have a first resistance to deflection in the clamping direction, in other words The dampers 60, 62 are formed from a first material having a first stiffness, for example, In other words, the second stiffness is smaller than the first stiffness. Exemplary first materials include, by way of example and not limitation, However, it may be a thermosetting plastic, a thermoplastic, or a metal such as stainless steel. Exemplary data for the shell material (e.g., substantially rigid plastic) are: The durometer rating may be a Shore D hardness of 50 or greater. Exemplary second materials, alternatively referred to as, by way of example and not limitation, thermoset Plastic, thermoplastic, silicone polymer, or nitrile rubber Exemplary durometer ratings for damper materials are 50 Shore or less. It may be A hardness.

[0048] Various hardness values ​​may be feasibly used to reduce vibration transmission to the blade 28. Generally, dampers 60, 62 with lower hardness have lower damper stiffness. This results in greater vibration damping. An alternative method for this is to reduce the contact area between the blade 28 and the dampers 60, 62. or increasing the combined height of the dampers 60, 62. When both of these parameters are changed, the effective stiffness of dampers 60 and 62 changes. Additionally, the magnitude of vibration damping depends on the size of the blade 28. similar to what is observed when larger blades are used. In order to obtain vibration damping of the magnitude of ,62 stiffness must be reduced. Additionally, reducing the damper stiffness too much can A blade 28 in a coupler 26 for attaching the blade to the handpiece 24. For these reasons, the blade size and density, the contact area between the blade 28 and the damper, and the height of the damper; It is believed that there is an ideal damper hardness depending on the user's preference. The estimated material hardness for the blade 28 may be 20 Shore 00 hardness.

[0049] The shells 56, 58 each have substantially planar outer surfaces 64, 66 and associated inner and opposed inner surfaces 68, 70 having edges 72, 74. The edges 72, 74 may be on the outer peripheral edges 76, 78 of the associated shells 56, 58. Each of the wells 56, 58 may have a substantially arcuate shape. When installed, the arcuate shape of the shells 56, 58 is centered about the mounting axis 38. The inner surfaces 68, 70 may each receive a corresponding damper 60, 62. Alternatively, each inner surface 68 may define receiving pockets 80, 82 for receiving the respective inner conductors. , 70 may define multiple such pockets 80, 82, with each pocket 80, 82 accepts separate dampers 60,62.

[0050] The dampers 60, 62 may be attached by adhesive or by being molded into the shell, or , may be secured to the shells 56, 58 by any other known means. 4 may be provided in the shells 56, 58 to allow the damper material to be injected through the injection openings 8 4 into a mold partially defined by shells 56 and 58. The dampers 60, 62 are configured to mold the inner edge 7 2,74 and extending axially.

[0051] The shells 56, 58, and hence the cassette portions 52, 54, have corresponding outer peripheries 76, 78 against the outer peripheral edge 87 of the proximal portion 30' of the saw blade 28'. The inner peripheries of the cassette portions 52, 54, and thus the cassette 5 The inner periphery of the cassette 50 is substantially spaced from the drive surface 36. As long as it does not completely overlap the moving surface 36 and the coupler 26 The cassette 50 is preferably in a position that does not interfere with the receipt of the saw blade cartridge 48 by the There may be some overlap with the drive surface 36. The cassette thickness T measured across the outer surfaces 64, 66 of the first and second cassette portions 54 1 is substantially thicker than the blade thickness T2 of the blade 28'. The blade thickness T2 may be 0.5 mm, and this thickness T2 is The thickness of an exemplary cassette may be measured across the top surface 88 and bottom surface 89 of the cassette 30'. The thickness T1 may be 3.0 mm. The shells 56, 58 and the dampers 60, 62 are Each may define an arc α of at least 120 degrees. The arc α shown in FIG. is equal to 180 degrees.

[0052] At least one of the cassette portions 52, 54 has a groove extending beyond the associated inner edge 72, 74. Axially extending connecting tabs 90, 92 may be provided between the cassette portions 52, 54. When the cassette portions 52, 54 are installed on the blade 28', The connecting tabs 90, 92 extend beyond the associated inner edges 72, 74 to provide a The cassette portions 54, 52 are connected to one another by connecting tabs 90, 92. 10, but the connecting recesses 94, for example, on the outer peripheral edge 87 of the blade 28'. Alternatively, the saw blade may be configured as shown in FIG. In the blade 28 ″, the proximal portion 30 ″ is provided with an alternative opening for the connection recess 94 . 9. In such an example, the tabs 90, 92 may be spaced apart relative to the opening 96. The cassette part is positioned so that the tabs are aligned. When cassette portions 52 and 54 are used, a damper 60, 62 apply a predetermined clamping load to the blade 28'. The load pinches the blade 28 between the dampers 60, 62. An exemplary predetermined load is 5 It is essentially equal to a newton (1 pound) of force.

[0053] In one example, tabs 90, 92 are inserted into connecting recesses 94 on blades 28', 28'', respectively. Alternatively, the tabs 90, 92 may extend into the connecting opening 96, in which case the tabs 90, 92 are connected to one another. 54 with respect to the proximal portions of the blades 28', 28''. Alternatively, the interlocking tabs 90, 92 may be attached to one of the cassette portions 52, 54. In regard to the other, it may be longer and pass through the connecting recess 94 or the connecting opening 96. , the other cassette portion 54, 52 is fixed to the other cassette portion 54, 52 with the connecting tabs 90, 92 fixed to the other cassette portion 54, 52. The tabs 90, 92 may extend into the other cassette portion 54, 52. 4, 52, which are located at the interface with the connecting tabs 90, 92. and by engaging with the side surfaces of the shells 58, 56 of the other cassette parts 54, 52. or any other method including but not limited to ultrasonic welding and adhesive bonding. The cassette portions 52 and 54 are connected by any known means. , before positioning the cassette portions 52, 54 onto the proximal portion 30', their proximal tips 98 , 100. In such a configuration, the tips 98, 100 The connection may function as a living hinge between the cassette portions 52, 54, thereby Therefore, the first cassette part 52 can slightly swing relative to the second cassette part 54. Once so positioned, the tab 30 can be slid onto the proximal portion 30'. The cartridges 90, 92 are connected to the shells 58, 56 of the opposing cassette sections 54, 52. When the cassette sections 52, 54 are properly positioned, the damper 60, 62 are compressed by the corresponding shells 56, 58, respectively, to 3. The cassette portions 52, 54 are preloaded against the proximal portion 30' of the card 28'. The screws are fastened together at 0.92°. An exemplary preload is about 5 Newtons of force. Good too.

[0054] 12 to 14 show alternative cassette configurations.

[0055] In FIG. 12, the saw blade cartridge 48''' is thinner than the blade body 34'''. The saw blade 28 includes a double-thickness saw blade 28''' having a thick proximal portion 30'''. ' is disposed between opposing cassette portions 52''' and 54''' of cassette 50'''. The cassette 50''' is positioned relative to the proximal portion 30'''. To achieve the same preload as is achieved for min 30, several options are available. One example shown in FIG. 12 is a shell 56'' that is identical to shells 56 and 58. and 58''', and dampers 60''' and 62'' ' is longer than the dampers 60 and 62, which allows for a thinner The proximal portion 30''' is compensated. One configuration, not shown, is where the shell 56''' and and 58''' to have shallower receiving pockets 80''' and 82'''. and dampers 60''' and 62''', and dampers 60''' and 62 Another configuration, not shown, is that the shell 56' and 58''' to have a maximum thickness in the axial direction. The thicker shell 56''' reduces the distance between the surface 64''' and the edge 72''' by The difference between the thickness of the proximal portion 30''' and the thickness of the proximal portion 30 is proportional to the difference between the thickness of the surface 64 and the The distance between the edge 72 and the The shell 58''' may have a distance between the surface 66''' and the edge 74''' that is greater than the distance between the proximal portion 30 the distance between the surface 66 and the edge 74 in proportion to the difference in thickness between the '''' and the proximal portion 30 The dampers 60''' and 62''' are larger than , would be identical to dampers 60 and 62. The alternatives described in this paragraph are It is specific, not comprehensive.

[0056] In FIG. 13, the saw blade cartridge 48'''' is positioned proximal to the saw blade 28''''. 30"" is shown having a proximal portion 30"" with a top surface 88"" a first ridge 99 located above and extending over the top surface 88'''' thereof, and a bottom surface 89' an aligned second rib located on the bottom surface 89 and extending above the bottom surface 89; Ridges 99 and 101 each include a first shell 56''''. into the first receiving pocket 80'''' of the second shell 58'''' and into the second receiving pocket 80'''' of the second shell 58''''. The shells 56'''' and 58'''' extend into the pocket 82''''. The shells 56 and 58 may be identical. '''' and 54'''' are the first damper 60'''' and the second damper Dampers 60'''' and 62'''' include dampers 60 and 6 2, and the corresponding shells 56'''' and 58'''' are shorter than The ridges 99 and 99 do not extend beyond the inner edges 72'''' and 74''''. 101 may be continuous and may be separated by receiving pockets 80'''' and 82''''. and dampers 60'''' and 62'' over arc α. Alternatively, the ridges 99 may present a continuous surface for engagement with the and 101 may be tooth-shaped, and pockets 80'''' and 82'''' and engagement with dampers 60'''' and 62''''. Alternatively, the ridges 99 and 101 may be The shape may be sinusoidal and may be shaped for reception by pockets 80'''' and 82''''. and for engagement with dampers 60'''' and 62''''. Ridges 99 and 101 may also be present on the blade 28''''. may be formed separately and may be secured together by methods including, but not limited to, adhesive bonding, welding, and any suitable means, including complementary engagement features such as pins and receiving openings. 28''''。 If it is formed separately, However, after being coupled to the blade 28'''', the ridges 99 and 101 The alternatives described in this paragraph are illustrative only. So it's not comprehensive.

[0057] In FIG. 14, saw blade cartridge 48 V is a saw blade substantially identical to saw blade 28'. Blade 28 V The cassette 50 is shown with V is formed entirely from a first material The first cassette part 52 V and second cassette part 54 V Each cassette contains 5 pieces 2 V ,54 V are dampers each having a plurality of comb teeth 103, 105 extending in the axial direction. -60 V ,62 V The axially extending comb teeth 103 and 105 are made of a first material. The axially extending tabs 103 and 105 may be formed on the Alternatively, it may be in the form of a plurality of bristles (not shown) or any other suitable The comb teeth 103 and the comb teeth 104 may be in the form of a plurality of comb teeth extending in an appropriate axial direction. The length of the blade is 28mm. V is selected to obtain the desired preload for Damper 60 V and 62 V The desired stiffness of the comb teeth 103 and 105 is determined by the dimensions and The alternatives described in this paragraph are exemplary only. It is not comprehensive.

[0058] The coupler 26 couples the blade 28 and cartridges 48, 48''' to the saw 22. ,48'''',48 V The cartridge 48 is designed to be easily attached and detached. The following references to cartridges 48, 48''', 48'''', 48 V All of It encompasses the following.

[0059] A coupler 26 located at the distal end of the exemplary handpiece 24 is oriented along the axis of rotation 10. The mounting axis 38 of the saw blade 28 and of the cartridge 48 defines a saw blade 28. When blade 28 is mounted in coupler 26, it is substantially aligned with axis of rotation 102. It is said.

[0060] The coupler 26 includes a coupler housing 104, a coupler cap 106, and a coupler driver. 108, coupler pin 110, coupler cup 112, coupler bearing 114, and The pin 110 may include a release button 116 and a coupler spring 118. The pin may include a pin collar 120 extending therethrough.

[0061] The housing 104 may include a housing head 122 at its distal most end. The housing head 122 may have a pivot hole 124 extending therethrough. The pivot hole 124 defines the axis of rotation 102 of the coupler 26. The bearing 114 may be pivotally disposed within the bore 124. The bearing 11 may be disposed radially between the sleeve 128 and the bore 124. 4 may be of any conventional construction, for example an inner race and an outer race. The cup 112 may include a race and a plurality of rollers disposed therebetween. The cup 112 may include a lower lip 130 extending radially outward from a lower end 132 thereof; Lower lip 130 allows axial upward movement of cup 112 through hole 124. The cup 112 and the upper end 134 of the sleeve 128 are The driver hole 136 may be received and engaged by the cup. The press fit between the sleeve 128 is an exemplary method for securing one to the other. Any suitable alternative to a press fit to secure cup 112 within bore 136 may be used. The cup 112 extends from the second surface 135 of the driver 108 to the pivot hole. 124. Possible alternatives are shown by way of example and not limitation. The driver 108 and the cup 112 prevents the cup 112 from moving downward through the hole 124. The cup 112 is secured to the driver 108 so that the driver 108 can move integrally with the cup 112. With the driver 108 so secured to the cup 112, the driver 108 rotates. The cup 112 and driver 108 may pivot together about axis 102. Alternatively, it may be formed as a single integral unit. In the embodiment, the lip 130 is formed as a ring that is fixed to the bottom end of the cup 112. The fastening means may include, but is not limited to, screwing, press fitting, welding, and adhesive. This includes bonds that

[0062] The coupler pin 110 is slidably disposed within the cup 112 and the pivot hole 124. 124, so that the coupler pin 110 fits inside the cup 112 and the pivot hole 124. The pin 110 can be translated axially along the axis of rotation 102. The collar 120 may be, or at least internally, larger than the collar 120 shown. The side portion may be disposed inside the driver 108 and, in the holding position, is positioned closer to the cup 112. The collar 120 may be larger than the opening of the cup 112. The engagement of the collar 120 with the top end 134 of the cup 112 may be In this case, the downward movement limit of the pin 110 relative to the cup 112 may be limited. However, downward movement of the pin may alternatively be achieved by, for example, the blade 28 or cartridge 48. Alternatively, it may be limited by the engagement of the cap against the blade engagement prongs 137. Such prongs are described in more detail below.

[0063] The release button 116 is located at the lower end of the pin 110. The button 116 may be fixed to the housing 112 by press fitting or by welding. or by adhesive, or by screwing, or by any alternative known means. The coupler spring 118 may be secured to the pin 110 by the cup 112. and the outer diameter of the pin 110. The inner wall surface 188 of the cup may be formed by a first portion 138 having a larger diameter than a second portion 140. The first portion 138 may be located below the cup 112 below the second portion 140. The first portion 138 may be aligned with the counterbore, which may be located at the end of the This defines a step surface 142 between the first portion 138 and the second portion 140 .

[0064] The first portion 138 moves the button 116 into the bottom end of the cup 112 by a distance D1. It is considered that the release button 116 and pin 110 move as a unit. In consideration, the fully displaced position of the button 116 establishes the fully displaced position of the pin 110 . Utilized for selective axial displacement of button and pin 110 relative to cup 112 The possible distance D1 is the distance from the upper engagement surface 143 of the release button 116 to the step surface 142. Distance D1 is equal to the step that the button 116 engages at its full displacement position. The axial position of the surface 142 may be limited by the upper engagement surface 143 of the button 116. When engagement exists between the pin 110 and the stepped surface 142, movement of the pin 110 and the button 116 , and the additional available distance D1 is equal to zero. The downward movement of 116 is caused by the engagement between the cap 106 and the driver 108, or Alternatively, as described above, the collar 120 and the upper end 13 of the sleeve 128 of the cup 112 may be 4. If the collar 120 includes a web, the transition The movement may be limited by the engagement between the web and the driver 108. As shown in FIG. Additionally, the presence of the blade 28 within the coupler 26 is at least the thickness T2 of the blade. Therefore, due to the reduction of the distance D1, the available distance D1 is not at its maximum value. The movement of the release button 116 and pin 110 relative to the cup 112 is By virtue of being substantially axially fixed relative to the cup 112, the driver 108 and movement of the button and pin 110 relative to either the housing head 122. Virtually equal.

[0065] The cap 106 is fixed to the upper end of the pin 110, and together with the pin 110, The cap 106 may be press-fit or welded. or by adhesive, or by screwing, or by any alternative known means. Alternatively, the cap and pin may be secured to the pin 110 by , may be formed as a single integral unit. The cap 106 has a circumferential groove 144 or alternatively, a plurality of circumferentially distributed cap openings (not shown). , which are fixed relative to the driver 108 when the coupler 26 is in the closed position. The prongs 137 may be fixed to or secured to a portion of the prongs. The ring 137 is on the top or first surface 146 of the driver 108 and is The closed position may alternatively extend axially from the top or first surface 146 of the nozzle 108. , which may be referred to as the first holding position. The closed position is illustrated in FIG. 2. 6, for example, if the prong 137 is not longer than the thickness of the blade 28, The blade 28 may be effectively retained without the groove 144 in the cap 106 . When coupler 26 is used to hold cartridge 48, the prongs 28'. When prongs 137 long enough for the cap to be used are used, grooves 144 allow The cap must be securely fastened to the blade 28, as there is no excess travel that would interfere with proper clamping of the blade 28. The provision of grooves 144 in 106 allows the same coupler 26 to couple the blade 28 and cartridge 48. It is useful to be able to retain both the

[0066] The driver 108 includes an integral driven portion 148, which is partially shown, and a driver lock. The driven portion 148 may include a drive portion 150 about the axis of rotation 102. A driver motor (not shown) is provided to provide selective pivotal actuation of the driver 108. The link and drive motor together may be connected to the hand. It may be placed inside the piece 24 .

[0067] The driver locking portion 150 includes prongs that may be distributed circumferentially about the axis of rotation 102. The driver lock portion 150 may include a first substantially planar shaped The surface 146 may have a base 158 with an upper surface 154. A raised portion 160 may be provided on the upper surface 154. The raised portion 160 may extend upward from 154 into a plurality of raised portions 160, e.g. For example, the raised portion 160 may be segmented into four raised portions 160. Each raised portion 160 may be substantially The raised portion 160 may have an arcuate shape in the circumferential direction around the rotation axis 102. The raised portions 160 may be arranged so as to be evenly distributed in the direction of the rotation axis 102. As shown, a prong 137 is provided at each end of each raised portion 160. and may be integral with each other and may further extend upward from each end of each raised portion 160. Well, here an exemplary number of prongs is eight. Each raised portion 160 has one prong. Alternatively, the prongs 137 may have an engagement surface 162 disposed between them. may generally include raised portions with an engagement surface 162 disposed therebetween.

[0068] With coupler 26 in the closed position, prongs 137 of each raised portion 160 contact pin 1 10 and extends at least partially beyond the collar 120 of the cap 106. In the open position shown in FIG. Between the top surface 166 of the prong 137 and the bottom surface 164 of the cap 106 The thickness T2 of the proximal portion 30 of the blade 28 is set to be greater than the thickness T3 of the proximal portion 30 of the blade 28 so that the blade 28 can be received between the There is a large axial gap between the cap 106 and its bottom surface 164. The raised portion 160 may be biased by the ring 118 toward the engagement surface 162 of the raised portion 160, which Thus, when the button 116 is released, the proximal portion is between the bottom surface 164 and the engagement surface 162. 30 can be clamped.

[0069] The illustrated collar 120 may be positioned entirely within the driver hole 136. A similarly configured camera as described and illustrated in U.S. Pat. No. 7,833,241 B2, referenced above, The collar has an inner portion similar to the collar 120 here, but is made of multiple webs. The collar includes a web and an outer ring-shaped portion connected to an inner portion. The side portions are useful in removing the blade from the coupler. Although not shown, collar 120 herein may also include such webs, and Alternatively, it may also include such an outer portion, and such outer portion may The axially extending portion 54 may be disposed radially inward of the wells 56 and 58 .

[0070] The saw blade 28 of FIG. 3 may be received by the coupler 26 in the following manner. The release button 116 is aligned with the orientation of FIGS. 1 and 2 to bias the coupler spring 118. The button is pressed upward against the force, thereby displacing the cap 106 upward. When the cap 116 is pressed, the axial gap D2 between the collar 120 and the cap is , more specifically, between the bottom surface 164 of the cap 106 and the top surface 166 of the prong 137 The axial gap D2 is greater than the thickness T2 of the proximal portion 30 of the blade 28, so that Thus, the proximal portion 30 of the blade 28 can be inserted into the gap. The slot 42 in the portion 30 may be tapered as shown, allowing for The radial surface 44 is guided to align with the coupler pin 110. , the radius of each of the pin 110 and the radial surface 44 is 8, 102 may be substantially identical to facilitate alignment. 8 may be aligned in a desired orientation, for example, blade 28 may be aligned as shown. The button 11 is aligned longitudinally so as to be parallel to the handpiece 24. 6 is released to move the prongs 137 of the driver locking portion 150 to the proximal portion of the blade 28. When aligned with the opening 40 of the blade 30, the blade 28 is The blade opening 4 may be pivoted very slightly about the axis of rotation 102. With prong 137 engaged and button 116 released, The top surface 88 of the proximal portion 30 of the board 28 is engaged by the bottom surface 164 of the cap 106. The bottom surface 89 of the proximal portion 30 is adapted to engage the raised portion 160 of the locking portion 150 accordingly. The cap 10 is pressed against the proximal portion 30 of the blade 28. The clamping force of 6 in turn clamps the cap 10 against the top surface 154 of the locking portion 150. The clamping force of 6 is provided by the coupler spring 118. The blade 28 After being clamped inside 26, the saw 22 is driven by energizing the motor. 2, which may pivotally reciprocate the saw blade 28 to operate the saw system. 20 may be used to cut material. The drive of the blade 28 is The engagement of the prongs 137 with the studs may be relied upon.

[0071] To release the blade 28, the release button 116 is pressed against the biasing load of the spring 118. The pin moves upward, and with it, the collar 120 and the cap 106 moves upward. The blade contacts the top surface 166 of the prong 137. The gap D2 between the bottom surface 164 of the cap 106 and the blade 28 is larger than the thickness T2 of the blade 28. As soon as the pressure is high enough, it may be pulled out of the coupler 26. If the button 116 is further pressed, When the collar 120 moves beyond the prong 137, causing additional displacement of the pin. Removal may be assisted by applying pressure to the proximal portion 30 of the blade 28. The engagement between the roller 120 and the proximal portion 30 occurs within the inner radius of the opening 40 of the blade 28. It may happen.

[0072] The saw blade cartridge 48 of FIGS. 5-9 is received by the coupler 26 in the following manner. The release button 116 may be spring loaded, consistent with the orientation of FIGS. 118, the cap 106 is pushed upward against the biasing force of the cap 106. The gap D between the bottom surface 164 of the cap 106 and the top surface 166 of the prong 137 2 is greater than the thickness between the bottom surface 89 of the blade 28' and the outer surface 58 of the first shell 56 At times, the proximal portion 30' of the blade cartridge 48 may be inserted into the coupler 26. The slot 42 may be tapered as shown. shaped, which allows the locating radial surface 44 to be aligned with the coupler pin 110. The blade 28' can be positioned as desired. For example, blade 28' may be aligned in a horizontal direction consistent with the illustration. The button 116 is longitudinally aligned so that it is parallel to the end piece 24. 137 of the driver locking portion 150 is connected to the blade cartridge 48 The blade 28' is aligned with the opening 40 in the proximal portion 30'. The cord 28' is pivoted very slightly about the axis of rotation 102 relative to the coupler 26. With the blade opening 40 receiving the prong 137 and the button 116 is released, the cassette 50 of the cartridge 48 is inserted into the bottom of the cap 106. 164 presses against the upper surface 154 of the locking portion 150. The clamping force of the cap 106 against the outer surface 64 of the driver lock 52 is The outer surface of the second cassette portion 54 relative to the upper surface 154 of the locking portion 150 The clamping force of the face 66 is provided by the coupling spring 118. After the blade 28’ is clamped inside the coupler 26, the saw 22 may be driven by energizing the motor, thereby reciprocatingly driving the saw blade 28’ pivotably, so that the saw system 20 may be used to cut the material. Similar to the case of the blade, the drive of the cartridge 48 may depend on the engagement of the prong 137 with respect to the drive surface 36. After being clamped inside the coupler 26, the saw 22 may be driven by energizing the motor, thereby reciprocatingly driving the saw blade 28’ pivotably, so that the saw system 20 may be used to cut the material. After being clamped inside the coupler 26, the saw 22 may be driven by energizing the motor, thereby reciprocatingly driving the saw blade 28’ pivotably, so that the saw system 20 may be used to cut the material. After being clamped inside the coupler 26, the saw 22 may be driven by energizing the motor, thereby reciprocatingly driving the saw blade 28’ pivotably, so that the saw system 20 may be used to cut the material. Similar to the case of the blade, the drive of the cartridge 48 may depend on the engagement of the prong 137 with respect to the drive surface 36. After being clamped inside the coupler 26, the saw 22 may be driven by energizing the motor, thereby reciprocatingly driving the saw blade 28’ pivotably, so that the saw system 20 may be used to cut the material. Similar to the case of the blade, the drive of the cartridge 48 may depend on the engagement of the prong 137 with respect to the drive surface 36.

[0073] To release the cartridge 48, the button 116 may be pressed upward by the user selectively engaging a finger or thumb against the load of the coupling spring 118. The pin moves upward, and together with the pin, the collar 120 and the cap 106 move upward. The cartridge 48 may be pulled out of the coupler 26 as soon as the gap between the top surface 166 of the prong 137 and the bottom surface 164 of the cap 106 becomes greater than the thickness T3 between the bottom surface 89 of the blade 28’ and the outer surface 64 of the first shell 56. To release the cartridge 48, the button 116 may be pressed upward by the user selectively engaging a finger or thumb against the load of the coupling spring 118. To release the cartridge 48, the button 116 may be pressed upward by the user selectively engaging a finger or thumb against the load of the coupling spring 118. The pin moves upward, and together with the pin, the collar 120 and the cap 106 move upward. To release the cartridge 48, the button 116 may be pressed upward by the user selectively engaging a finger or thumb against the load of the coupling spring 118. The pin moves upward, and together with the pin, the collar 120 and the cap 106 move upward. The cartridge 48 may be pulled out of the coupler 26 as soon as the gap between the top surface 166 of the prong 137 and the bottom surface 164 of the cap 106 becomes greater than the thickness T3 between the bottom surface 89 of the blade 28’ and the outer surface 64 of the first shell 56. To release the cartridge 48, the button 116 may be pressed upward by the user selectively engaging a finger or thumb against the load of the coupling spring 118. The pin moves upward, and together with the pin, the collar 120 and the cap 106 move upward. The cartridge 48 may be pulled out of the coupler 26 as soon as the gap between the top surface 166 of the prong 137 and the bottom surface 164 of the cap 106 becomes greater than the thickness T3 between the bottom surface 89 of the blade 28’ and the outer surface 64 of the first shell 56. To release the cartridge 48, the button 116 may be pressed upward by the user selectively engaging a finger or thumb against the load of the coupling spring 118. The pin moves upward, and together with the pin, the collar 120 and the cap 106 move upward. The cartridge 48 may be pulled out of the coupler 26 as soon as the gap between the top surface 166 of the prong 137 and the bottom surface ione 164 of the cap 106 becomes greater than the thickness T3 between the bottom surface 89 of the blade 28’ and the outer surface 6on 64 of the first shell 56.

[0074] The second example of the coupler 26’ provides a position locking member 168 shown in FIGS. 15 - 28 to avoid unintentional opening of the coupler 26’. The position locking member 168 is beneficial to prevent unintentional opening of the coupler 26’, and thus to prevent unintentional loss of both the cartridge 48 and the blade 28 from the coupler 26’ during operation of the further alternative saw system 20’. Such unintentional opening is distal to the axis 38 and parallel to the axis 38 but located farther from the axis 38 than the blade 28. The second example of the coupler 26’ provides a position locking member 168 shown in FIGS. 15 - 28 to avoid unintentional opening of the coupler 26’. The second example of the coupler 26’ provides a position locking member 168 shown in FIGS. 15 - 28 to avoid unintentional opening of the coupler 26’. The position locking member 168 is beneficial to prevent unintentional opening of the coupler 26’, and thus to prevent unintentional loss of both the cartridge 48 and the blade 28 from the coupler 26’ during operation of the further alternative saw system 20’. The second example of the coupler 26’ provides a position locking member 168 shown in FIGS. 15 - 2\8 to avoid unintentional opening of the coupler 26’. The position locking member 168 is beneficial to prevent unintentional opening of the coupler 26’, and thus to prevent unintentional loss of both the cartridge 48 and the blade 28 from the coupler 26’ during operation of the further alternative saw system 20’. The second example of the coupler 26’ provides a position locking member 168 shown in FIGS. 15 - 28 to avoid unintentional opening of the coupler 26’. The position locking member 168 is beneficial to prevent unintentional opening of the coupler 26’, and thus to prevent unintentional loss of both the cartridge 48 and the blade 28 from the coupler 26’ during operation of the further alternative saw system 20’. Such unintentional opening is distal to the axis 38 and parallel to the axis 38 but located farther from the axis 38 than the blade 28. The second example of the coupler 26’ provides a position locking member 168 shown in FIGS. 15 - 28 to avoid unintentional opening of the coupler 26’. The position locking member 168 is beneficial to prevent unintentional opening of the coupler 26’, and thus to prevent unintentional loss of both the cartridge 48 and the blade 28 from the coupler 26’ during operation of the further alternative saw system 20’. Such unintentional opening is distal to the axis 38 and parallel to the axis 38 but located farther from the axis 38 than the blade 28. This can occur with respect to coupler 26 when a downward or upward load is applied. Such a load is sufficient to overcome the clamping load of the coupler spring 118. In such cases, the blades may be pivoted within the coupler 26. 06 will deflect upward, away from the driver 108, causing the brake The blade 28 or cartridge 48 can escape from the prong 137, thus The position locking member 168 of the coupler 26' is then The coupler 26' is identical to the actual coupler 26 except for including a position locking member 168. It is qualitatively identical to coupler 26 and is consistent with the following description.

[0075] FIG. 15 shows a handpiece including a coupler 26' that receives a saw blade cartridge 48. 24. The release button 116' is shown in a first retaining position, Lock button 170 is shown in the locked position.

[0076] FIG. 16, an exploded cross-sectional view, shows many of the individual components of coupler 26'. The reference numbers for the components and elements of coupler 26' are the same as those in the description of coupler 26. Use of reference symbols other than apostrophes is consistent with the use of reference symbols. The components may be substantially similar, at least in function. In this case, components and features sharing a reference sign other than an apostrophe are referred to as components and features. The coupler 26' may be identical to the other couplers except for the location of the features. The coupler 26' also includes a locking member 168. The first and second retention positions of the cap 106 relative to the driver 108 and head 122 The coupler 26 is distinguished by the fact that it provides two holding positions. The material 168 is attached to the cap 10 when the blade 28 is engaged by the coupler 26'. 6 in a first holding position relative to the driver 108 and head 122. Locking member 168 similarly locks cartridge 48 when it is engaged by coupler 26'. , the cap 106 is held in a second holding position relative to the driver 108 and head 122. When the cap 106 is in the second holding position, it is maintained at a lower pressure than when it is in the first holding position. In comparison, it is spaced axially farther from the engagement surface 162 .

[0077] The position locking member 168 may be combined with the release button 116'. The member 168 includes a lock button 170. The lock button 170 is a lock button 170 that is similar to the release button 116'. More specifically, the release button 116' is slidably disposed inside the a lock cavity 172 in which a lock button 170 can be slidably disposed; The lock cavity 172 may be formed inside the button 116'. The bottom end 174 of the button 116' may be open on the bottom end 174. 116′ as first end 174 and as first end 176 of button wall 176. 4. The button wall 176 separates the lock cavity 172 and the release button. The outer surface 178 of the tongue 116' defines a boundary therebetween. The tongue wall 176 may be substantially cylindrical. The lock button 170 is A retaining ring 179 located at the end of the tee 172 secures the inside of the locking cavity 172. The ring 179 may be held in place by, for example and not by, press fitting, welding, and and adhesive bonding. Alternatively, the lock button 170 may be held in place by a slide. Knapping peens the first end 174 of the button 116, causing the lock button to lock. The lock button 17 is configured to be slidably disposed within the cavity 172. 0 and the release button 116' may be formed three-dimensionally. good.

[0078] The position locking member 168 is disposed between the lock button 170 and the coupler pin 110. It may further include a locking spring 180. Alternatively, the release button 116' may Considering that the lock spring is fixed to the plastic pin 110, The lock spring 180 may be disposed between the button and the release button 116'. The lock button 170 is pressed downward against the pin 110 and release button 116'. The coupler pin 110 biases the release button 116' and the cap 116' toward the lock position. To fix each of the 06, a lock button 170 is attached to them. In the locked position, the lock button 170 is biased downward relative to the button wall 1 76 and in the unlocked position, the button wall 176 The lock button 170 may be substantially flush with the first end 174. Extending beyond the first end 174 in this position may be a feature of the blade 28 or cartridge 48. The lock button can be displaced further into the release button 116' to release the This is beneficial because the lock button 170 is secured against the first end 174 of the button wall 176. Although flushness is not a required feature, it is important to ensure that the lock button 170 is flush with the full travel position. and release the blade 28 or cartridge 48. The user is provided with an indication that no further force needs to be applied to the lock button 170 to lock the lock button. This is beneficial in terms of the benefits it can provide to users.

[0079] The first slider opening 182 slidably receives the first slider 184. The aperture 182 is formed in the button wall 176 at a first axial and circumferential location of the wall 176. All available positions of the release button 116' and lock button 170 are In this position, the first slider 184 remains at least partially within the first slider opening 182. Exemplary positions for the lock button 170 include a locked position and an unlocked position. Exemplary positions for the release button 116' include a hold position and a release position. The holding and releasing positions of the cap 106 are the same as the holding and releasing positions of the cap 106. This occurs when all three members 116', 106, and 110 are integrated. The button 116' and the cap 106 are held together by the pin 110 while moving. The slider 184 is connected to the release button 11 in the axial direction. 6' and moves substantially integrally with the wall 176 along the opening 182. The first slider 184 is configured as a substantially spherical slider. However, other shapes may be used. For example, the slider 18 4 may have an elongated shape, such as a cylinder (not shown). Such a cylinder may have two radii at both ends. It may be projectile-shaped and thus resemble a double-ended bullet. Forming the sphere or forming it to have a spherical end is a The slider 184 may unintentionally jam the lock button 170 in an undesired position. The slider 184 helps prevent such jamming. Alternatively, the slider 184 may have a tapered end. The cylindrical shape depends on the ratio between the thickness of the wall 176 and the diameter of the slider 184. Regardless of its shape, slider 184 is rigid and will not move during expected use. It is made of a relatively hard material that is qualitatively non-deformable. Exemplary materials are steel and thermoplastic Contains sexual substances.

[0080] 17 and 18 show the release button 116' in the first retaining position and the release button 116' in the first locking position. 1 shows a lock button 170.

[0081] As shown in FIG. 17, the position locking member 168 engages with the inner wall surface 188 of the coupler cup 112'. 186 formed in the outer surface 192 of the lock button 170. and a first lock button receiving notch 190 formed therein. Additionally, the inner wall surface 188' has a first portion 138' that has a larger diameter than the second portion 140'. The first portion 138' may be located below the second portion 140' at the bottom end of the cup 112'. The first portion 138' may be aligned with the counterbore, and the first portion The slider 184 defines a step surface 142' between the first portion 138' and the second portion 140'. Under certain conditions, which will be described in more detail below, the notches 186 and 190 align with the slider opening 182. When the first cup is fully engaged, it is supported by the first cup receiving notch 186 and the first lock button. The same or similar may be partially received by a receiving notch 190. Also, the first slider 184' has a mirror image first cup receiving notch 186' and a mirror image first Rotate the first slider 184 180 degrees to engage the lock button receiving notch 190'. The openings 182 may be disposed in similar openings 182' spaced apart by a distance of 1.5 mm.

[0082] The second slider opening 194 slidably receives the second slider 196. The opening 194 is formed at a second axial and circumferential location of the wall 176. All available positions of the release button 116' and lock button 170 are In this position, the second slider 196 remains at least partially within the second slider opening 194. The slider 196 is substantially integral with the release button 116' in the axial direction. and radially along opening 194 relative to wall 176. The second slider 196 may have the same shape as the first slider 184, although this is not essential. The second circumferential position may be 90° from the first circumferential position. That is, the second slider opening 194 and the slider 196 may be , even if located at 90 degrees from the first slider opening 182 and the first slider 184. good.

[0083] As shown in FIG. 18, the position locking member 168 also engages the inner wall surface 188 of the cup 112'. The position locking member 168 includes a second cup-receiving notch 198 formed in the locking member 168. A second lock button receiving notch 200 formed in the outer surface 192 of the button 170 is further The slider 196 includes notches 198 and 200 that slide under certain conditions, which will be described in more detail later. When aligned with the rider opening 194, a second cup receiving notch 198 and partially received by the second lock button receiving notch 200. An identical, similar second slider 196' has a mirror image, second cup-receiving notch 198'. and a mirror image second lock button receiving notch 200'. It may be located in a similar slider opening 194' located at 96 to 180 degrees. .

[0084] When the position locking member 168 is in the locked state, the notches 186, 190, 198, The 200 length does not release the blade 28 or cartridge 48, but Some limited axial movement of the cartridge 28 or cartridge 48 may be permitted. stomach.

[0085] 17 and 18 do not have a blade 28 or cartridge 48 and are The lock button 170 is in the first lock position. 17 and 18 show cross-sectional views of coupler 26' in position. This will help explain how locking member 168 is held as part of coupler 26'. The release button 116' is a cup 112' disposed between the cup 112' and the release button 116'. Prespring 118 provides downward travel within first portion 138. The release button 116' is biased to the maximum extent that the second slider is opened. The first cup-receiving notch 186 remains positioned within the mouth 182, 182'. , 186', the first sliders 184, 184' disposed within the cup 112'. The slider 184, 184' may be held within the outer surface 170 of the lock button 170. 17 and 18. The lock button 170 is held in the notch by the As shown, a lock spring 180 keeps the lock in its most downward position, a first lock position. The retention of the lock button 170 within the engagement button provides a secure This may be achieved by engagement of the lock button 170 with the retaining ring 179 .

[0086] 19 and 20 show the release button 116' in the second retaining position and the release button 116' in the second locking position. The second lock position of the lock button 170 is shown in FIG. , an axially intermediate position between the first locked position and the unlocked position.

[0087] 19 and 20 show the lock button 170 in the second lock position and an exemplary release button. With the tongue 116', pin 110 and cap 106 in the second holding position, an exemplary 16 provides a cross-sectional view of the coupler of FIG. 15 holding a blade cartridge 48. The lock button 170 extends beyond the first end 174 of the wall 176, which The first sliders 184 and 184' are shown to be in the locked position. The first slider openings 182 and 182' are slidably disposed within the corresponding first slider openings 182 and 182'. The second sliders 196 and 196' are inserted into the corresponding second slider openings 194 and 195, respectively. The first slider 184, 184' is slidably disposed within the first slider 184, 184'. 1. The lock button is partially disposed within the receiving notch 190, 190', thereby The first slider 184 is located in the first portion 138 together with the button 116. The second slider 19 can move in the axial direction along the inner wall surface 188' of the second slider 19. 6, 196' are partially disposed within second cup receiving notches 198, 198', respectively. The sliders 196, 196' are attached to the top of the outer surface 192 of the lock button 170. The engagement of the sliders 196, 196' with the top portions of the notches 198, 19 and 20. In the second holding position shown in FIG. The sliders 196, 196' are positioned above the second lock button receiving notches 200, 200'. The cap 106 and pin 1 are engaged at or near the end. No matter how hard you try to displace 10 upward, the notches 200, 200' The sliders 196, 196' engage with the corresponding ends of the Such engagement is necessary to prevent the cap 106 from being disengaged from the cartridge. Resist any force that might cause the screw 48 to release from the coupler 26'.

[0088] 21 and 22 show the state where the lock button 170 is in the unlocked position and the release button 11 6' remains in the second holding position, and blade 28' of cartridge 48 contacts prong 137 19 and 20, and coupler 26' of FIG. Cartridge 48 is shown in an unlocked and engaged state. Applying a force to the exposed end of the spring 170 to overcome the force of the spring 180 may move the lock button 170 to the unlocked position. The lock button 170 is substantially flush with the end 174 of the button wall 176. The lock button 170 may be in the unlocked position. When the lock button is in the unlocked position, the second lock button receiving notches 200, 200' The slider 19 is aligned with the second slider opening 194, 194', thereby 6,196' is directed radially inward to be received by notch 200,200'. Therefore, the release button 116' can be moved as shown in FIGS. Then, the coupler 116 can be driven against the force of the coupler spring 118 to the second release position.

[0089] 23 and 24 show the state where the lock button 170 is in the unlocked position and the release button 11 6' is driven upward against the force of the coupler spring 118 to the second release position. 19 and 20, coupler 26' and cartridge 48 are in an unlocked and The unlocked and disengaged states are shown with the user's finger or The thumb presses upward on buttons 170 and 116' to activate lock button 1. 70 and then release button 116'. In the second release position, the second slider 196, 196' may be configured to lock the second lock button. The second slider 196 is partially disposed within the receiving notch 200, 200′. With 96' so positioned, release button 116' responds to user input. , the upper engagement surface 143' of the release button 116' against the stepped surface 142' of the cup 112'. As shown, the release button 116' can be moved upward until it abuts. The pilot portion 201 may extend upwardly beyond the upper engagement surface 143'. With the corresponding displacement of 106, the cartridge 48 may be lifted upward. The blade 28' can extend beyond the prongs 137 to couple the cartridge 48 to the coupler. It can be removed from the 26'.

[0090] 25 and 26 show the release button 116' in the first retaining position and the release button 116' in the first locking position. 1 shows the lock button 170.

[0091] 25 and 26 show the lock button 170 in the first lock position and an exemplary release button. With the tongue 116', pin 110 and cap 106 in the first holding position, an exemplary 16 provides a cross-sectional view of the coupler of FIG. 15 holding the blade 28. 70 extends beyond the first end 174 of the wall 176, thereby locking the lock button 1 70 indicates that the locking state is either the first locking state or the second locking position. The first sliders 184 and 184' are inserted into the corresponding first slider openings 182 and 182', respectively. The second sliders 196 and 196' are slidably arranged in the The sliders are slidably disposed within the corresponding second slider openings 194 and 194'. The first slider openings 182, 182' correspond to the first cup receiving notches 186, 186'. and substantially aligned with the top of the outer surface 192 of the lock button 170 Therefore, the first slider 184, 184' is inserted into the first cup receiving notch 186. The second slider openings 194, 194' are partially disposed within the second slider openings 194, 194'. against the cup receiving notches 198, 198' and against the outer surface 192 of the lock button. Therefore, the second slider 196, 19 6' are partially disposed within second cup receiving notches 198, 198', respectively. The sliders 196 and 196' are positioned against the top of the outer surface 192 of the lock button 170. The sliders 196 and 196' are engaged to separate from the notches 198 and 198'. In the first holding position shown in FIGS. 25 and 26, the second slider 196 , 196' is based on the length of the second lock button receiving notch 200, 200'. However, the cap 106 and pin 110 do not restrict axial upward movement. No matter how hard you try to displace the knob 106 and pin 110 further upward, The first sliders 184, 184' are aligned with the corresponding ends of the respective switches 186, 186'. Such engagement is resisted by the engagement of the cap 106. any forces that might otherwise cause cartridge 48 to disengage from coupler 26'. Resist against.

[0092] 27 and 28 show the state where the lock button 170 is in the unlocked position and the release button 11 6' remains in the first holding position, and the blade 28 is positioned below the end of the prong 137. 25 and 26, the coupler 26' and blade 28 are locked in place. The user presses the exposed end of the lock button 170 against the unlocked and engaged states. and applying a force to overcome the force of the spring 180 to lock the lock button 1 The lock button 170 may be moved to the unlocked position. 70 may be substantially flush with the end 174 of the button wall 176, When the lock button 170 is in the unlocked position, When the first lock button receiving notch 190, 190' is inserted into the first slider opening 182, , 182', thereby allowing the first slider 184, 184 ' can move radially inward to be received by notches 190, 190'. Additionally, the second lock button receiving notches 200, 200' may be The slider 196 is substantially aligned with the slider openings 194, 194'. , 196' are moved radially inward to be received by the notches 200, 200'. Therefore, the release button 116' can be moved as shown in FIGS. , can be driven against the force of the coupler spring 118 to the second release position. The first release position that allows removal of the 8 may be substantially the same as the second release position. The cartridge 48 and the blade 28 are held in the second release position with the release button in the second release position. It can either be removed from the coupler 26' or installed in the coupler 26'. The position and position of the release button 116' to allow removal of the blade 28 may be and the relative position of the cap 106 is required to displace the release button 116' to the second release position. The first release position and the second release position may not be required. The point on the release range where the attached button 116', pin 110 and cap 106 move. The release position for a particular blade or cassette is determined by the The blade or cassette will depend at least in part on the thickness of the associated When the release position is exceeded, the coupler 26' is still removed or the coupler 26 ' or can be accepted by.

[0093] Although not separately shown, the release of the blade 28 is shown in FIGS. 23 and 24. 23 and 24 show the release of the locking mechanism 46. When the release button 116 is pressed against the coupler spring 118, the release button 116 is in the unlocked position. and driven upwardly against the first release position, which may be identical to the second release position. 19 and 20, the coupler 26' and cartridge 48 are locked. The figure shows the release and release states. As in the first release position, the second release position The slider is positioned as described in the paragraph above. , 184', 196, 196' are so positioned, the release button 116' In response to a user input, the upper engagement surface 143' of the release button 116' engages the cup 112'. The cap 10 can move upward until it abuts against the stepped surface 142'. With the blade 28 correspondingly displaced, the blade 28 may be lifted upward. The blade 28 can extend beyond the prong 137 to remove the blade 28 from the coupler 26'. It can be removed.

[0094] The coupler 26' may be advantageously used in the following manner: A coupler 26' that does not include any of the ridges 48 therein may be seen in cross section in FIGS. 17 and 18. The handpiece 24 may be held by the user in one hand or in the first hand. 1. Using one of your hands, either your finger or your thumb, press the lock button 17 17 and 18 to the first lock position shown in Figs. 21, 22, 27, and 2 8 may be pressed upwards to the unlocked position.

[0095] The lock button 170 is pressed against the force of the spring 118 as shown in FIGS. 28 and 29, and the position described with respect to and illustrated in those figures. The lock button 116 may be displaced while the release button 116' is not substantially displaced. 70 can be fully displaced by displacing the lock spring 180 with the coupler spring 118. By selecting the spring rate to be significantly smaller than the spring rate of The release button 116' may be pressed while the lock button is depressed. The resistance to compression is achieved when the coupler spring 118 is compressed in the closed position shown in FIGS. By applying a preload, the good.

[0096] 21, 22, 27, and 28 show the release button 116' remaining in the engaged position. While holding the release button 116', the first end 174 of the release button 116' is in the unlocked position. The bottom of the lock button 170 is shown when the lock button 170 is flush with the The flush position of the edge may be sensed by the user and is indicated by the lock button 170 being fully depressed. This may be perceived by the user as a signal that the lock has been lifted and is in the unlocked position. Alternatively, the locking member 168 may be configured to release the locking button 170 in the locked position. The button 116' may extend below the first end 174. This may reduce the benefit of the lock button 170 signal to the user. while the lock button 170 and release button 116' still operate effectively. Instead, the user must wait until the lock button 170 reaches the unlocked position. and release button 116' is unlocked, as a signal that buttons 170 and 11 This may be due to increased resistance to 6' migration.

[0097] The user presses and holds the lock button 170 in combination with the release button 116'. The assembled button 170, 116', pin 110 and cap 106 may be 23 and 24. The upward movement of the tongues 170, 116', pin 110 and cap 106 causes the stepped surface 142' Although shown as being limited by engagement of upper engagement surface 143' with However, upward movement may alternatively be limited. One alternative mechanism for limiting the movement of the pin 110 and cap 106 is to use an assembly The erected buttons 170, 116', pin 110 and cap 106 reach their maximum displacement. When reached, the first end 174 is substantially flush with the lower edge of the lower lip 130. The outer diameter of the first end 174 is smaller than the width of a typical adult finger. The assembled button 170, 116' and pin 110 may be selected to be The movement of the cap 106 is such that the first end 174 is flush with the lower end of the lip 130. This does not significantly exceed what is achieved when coupler 26' results in In the open position, either the cartridge 48 or the saw blade 28 It may be located inside the coupler 26'.

[0098] The user holds the body 34 of the cartridge saw blade 28' between the fingers and thumb, for example. A second hand may be used to grasp the cartridge 48. The cartridge 48 has a first outer surface 64 that faces the cartridge. By vertically aligning the cartridge with the bottom surface 164 of the cartridge cap 106, Longitudinal alignment of the edge 48 with respect to the handpiece 24 further provides, e.g. If shown, until the locating radial surface 44 engages against the pin 110 or until the second Insert cartridge 48 into handpiece 2 until shell 58 contacts raised portion 160. 4, the connector 26 is positioned within the coupler 26'. The release button 116' may have a prong 137 aligned with the opening 40. The cartridge is then slightly rocked sideways so that it can be received by the opening 40. When the button 116' is further gradually depressed, the button 116' may be slowly released. , the cartridge is rocked by the user against prong 137. The release button 116' may be fully engaged by the user. When released, the lock button 170 responds to the biasing force applied by the lock spring 180. The release button 116' can now be moved to the second locking position. 19 and 20, the lock button 170 is in the second holding position. , the second lock position. When the release button 116' is released, the spring 118 aligns the bottom surface 164 of the cap 106 with the top surface 154 of the drive lock portion 150 The cassette 50 is clamped.

[0099] With the cartridge 48 so held, the saw system 20' cannot be used. The motor may be energized, thereby cutting the material. The cassette 50 is pivoted about the axis 102 within a predetermined angular range of vibration displacement. reduces blade whip and reduces kerf thickness in the material being cut by substantially The saw blade 28' forms the kerf and the blade 2 As 8' enters the kerf, the change in saw position generates one of an axial force and a bending force, Or a combination of the two may be applied to the blade 28'. The force, or both forces, exert an upward load on the bottom surface 164 of the cap 106. If not resisted, such force will be applied to the bottom surface 164 of the cap 106. The cartridge 48 may be loosened and, if possible, coupler 2 The position locking member 168 can be separated from the cap 106. 19 and 20, and particularly as shown in FIG. The second sliders 196 and 196' engage with the upper ends of the notches 198 and 198'. The mating provides resistance to upward displacement of the cap 106.

[0100] The cartridge 48 is connected to the coupler 2 as described above and shown in FIGS. 21 and 22. The lock button 170 may be selectively released from the lock button 170 by the user. 22. The release button 116' is then driven to the unlocked position shown in FIG. 23 and 24. The release button 116' may be driven to the release position shown in FIG. With the cartridge 48 held in the released position by the coupler 26', the user can remove the cartridge 48 from the coupler 26'. The user ensures that the blade 28' passes over the prong 137. Therefore, it may be necessary to press the first outer surface 64 against the bottom surface 164 of the cap 106.

[0101] The blades 28 may be similarly installed within the coupler 26'. 25 and 26 show coupler 2 with blade 28 installed. Both the release button 116' and the lock button 170 are shown. In the released state, the release button 116' is in the first holding position, and the lock button When the release button 116' is released, the spring 170 is in the locked position. The ring 118 allows the bottom surface 164 of the cap 106 to engage the engagement surface 162 of the drive lock portion 150. 62 clamps the proximal portion 30 of the blade 28 against the cartridge 48. Similarly, in use of saw system 20', blade 28 is moved relative to cap 106. 106 away from the engagement surface 162, thereby desirably Situations may exist where a force is applied in a direction that may allow for unwanted movement. The material 168 advantageously prevents such displacement of the cap 106. 6, and particularly as shown in FIG. 25, the first sliders 184 and 184' are notched. The upward deflection of the cap 106 is prevented by engaging the upper ends of the screws 186 and 186'. Resistance to position.

[0102] Blade 28 is as described above and shown in FIGS. 27-28, 23, and 24. As shown, the lock button 170 may be selectively released from the coupler 26'. 27 and 28. The button 116' may be actuated to the release position shown in Figures 24 and 25. With the tongue 116' held in the release position by the user, the user can The user may pull the blade 28 out of the coupler 26'. Press the proximal portion 30 against the bottom surface 164 of the cap 106 to ensure that the It may be necessary to

[0103] Provisions directed to alternative configurations for the surgical saw blade and coupler described above include: It is as follows. I. Either the surgical saw blade (28) or the surgical saw blade cartridge (48) a handpiece coupler (26) for engaging the The coupler is a housing head defining a pivot bore about an axis (38, 102); The housing head is fixed in the axial direction and has an axis (38, 102). and a shaft (38, 102) formed therethrough that is substantially a driver (108) defining a substantially centered driver bore, The blade includes a blade engaging prong (137) on the face at a position radially spaced from the axis. Ryba (108) and The drive shaft 104 is fixed to the driver 108 so that it can move together with the driver 108. and has an inner wall surface substantially centered on the axis (38, 102). and a cup (112) extending axially from the second face of the driver into the pivot hole. )and, a driver hole and a cup (112) slidably disposed therein; Selectively axially relative to the driver hole and cup within the hole and cup. a pin (110) that is displaceable; The pin (110) is fixed to the first end thereof and has a prong (137) with a diameter a cap (106) extending beyond the a second end of the pin (110) fixed thereto for selective engagement by a user; and defining a locking cavity (172) therein. 116), and further, the outer surface of the lock cavity (172) and the release button (116). a release button (116) defining a button wall (176) therebetween; The driver (108) is disposed between the pin (110) and the pin (110). a coupler spring (118) biasing the coupler (116) toward the closed position; The locking cavity (172) is slidably disposed therein, and has two a lock button (170) having two locked positions and an unlocked position; a surgical saw blade (28) and a surgical saw blade cartridge (48) a handpiece coupler (26) for engaging with the II. The lock button forms part of the position locking member, and the position locking member is The lock spring is disposed between the button and the pin. , biasing the lock button toward the locked position. . III. The lock button forms part of a position locking member, and the position locking member a first slider (184); A second slider (196); further comprising Inside the release button (116) an open first end of the cavity; The first slider (184) is slidably received therein and is axially and circumferentially movable. a first slider opening (182) extending through the button wall at the first position in the direction of the slider; The second slider (196) is slidably received therein and is movable from the first position to the axial direction. the button at a second position that is offset circumferentially from the first position and that is offset circumferentially from the first position. a second slider opening (194) extending through the slider wall; The handpiece coupler of claim II, wherein: IV. The lock button extends beyond the first end of the button wall in the locked position. and, in the unlocked position, being substantially flush with the first end of the button wall. The handpiece coupler according to III. V. The position locking member is positioned within the cup to allow selective engagement by the slider. Clause III or I further includes a plurality of notches in the wall and on the outer surface of the lock button. Handpiece coupler as described in V. VI. Multiple notches: a first lock button receiving notch (190) in an outer surface of the lock button; a first cup receiving notch (186) in the inner wall surface of the cup; a second cup receiving notch (198) in the inner wall surface of the cup; a second lock button receiving notch (200) in the outer surface of the lock button; 4. The handpiece coupler of claim V, including: VII. The first slider (184) In all positions of the release button and lock button, the release button moves axially. the slider is at least partially disposed within the first slider opening (182) so as to be movable; When the release button is in the first holding position and the lock button is in the first lock position, In this state, the first cup-receiving notch (186) is partially disposed within the first cup-receiving notch (186), The release button is moved from the first holding position to the first release position, and the lock button is unlocked. In the disengaged position, the first lock button is partially disposed within the first lock button receiving notch (190). It has been When the release button is in the second holding position and the lock button is in the second lock position, in the locking position, the first locking button is partially disposed within the first locking button receiving notch, The release button is moved from the second holding position to the second release position, and the lock button is unlocked. In the unlocked position, the first lock button is partially disposed within the first lock button receiving notch. , The second slider is In all positions of the release button and lock button, the release button moves axially. the slider is at least partially disposed within the second slider opening (194) so ​​as to be movable therewith; When the release button is in the first holding position and the lock button is in the first lock position, In this state, the second cup-receiving notch (198) is partially disposed within the second cup-receiving notch (198), The release button is moved from the first holding position to the first release position, and the lock button When the lock button is in the unlocked position, the second lock button receiving notch (200) It is partially arranged, When the release button is in the second holding position and the lock button is in the second lock position, in the second cup-receiving notch, The release button is moved from the second holding position to the second release position, and the lock button is When the button is in the unlocked position, it is partially located within the second lock button receiving notch. 6. The handpiece coupler of claim VI, VIII. The first holding position is when the blade without the damper cassette is held by the coupler. When accepted, it is obtained, The second holding position is where the blade cartridge containing the damper cassette is received by the coupler. When inserted, the handpiece coupler of clause VII is obtained. IX. The lock button forms part of a position locking member, the position locking member being a similar first slider (184'); a similar second slider (196'); further comprising Inside the release button (116) a first slider slidably receiving a similar first slider and extending through the button wall; a similar first slider opening; A similar second slider is slidably received therein and extends through the button wall. a similar second slider opening; The handpiece coupler of claim III, wherein: X. A position locking member is provided within the cup for selective engagement by the slider. 8. The device according to claim 8, further comprising a plurality of notches in the wall and in the outer surface of the lock button. Handpiece coupler included. XI. Multiple notches a first lock button receiving notch and a mirror image notch on the outer surface of the lock button; a first lock button receiving notch; A first cup receiving notch and a mirror image first cup receiving notch on the inner wall of the cup. Insert notch and A second cup receiving notch and a mirror image second cup receiving notch on the inner wall of the cup. Insert notch and a second lock button receiving notch on the outer surface of the lock button and a mirror image a second lock button receiving notch; 9. The handpiece coupler of claim IX, including: XII. The first slider is In all positions of the release button and lock button, the release button moves axially. the slider is at least partially disposed within the first slider opening so as to be movable; When the release button is in the first holding position and the lock button is in the first lock position, in the first cup-receiving notch, The release button is moved from the first holding position to the first release position, and the lock button is unlocked. In the unlocked position, the first lock button is partially disposed within the first lock button receiving notch. , When the release button is in the second holding position and the lock button is in the second lock position, in the locking position, the first locking button is partially disposed within the first locking button receiving notch, The release button is moved from the second holding position to the second release position, and the lock button is unlocked. In the unlocked position, the first lock button is partially disposed within the first lock button receiving notch. , The first slider is similar to In all positions of the release button and lock button, the release button moves axially. a first slider at least partially disposed within a similar first slider opening for movement therethrough; When the release button is in the first holding position and the lock button is in the first lock position, in the first cup-receiving notch, the first cup-receiving notch being partially disposed within the mirror-image first cup-receiving notch; The release button is moved from the first holding position to the first release position, and the lock button is unlocked. In the disengaged position, the locking button is partially disposed within a mirror image first locking button receiving notch. It has been When the lock button is in the second lock position, it receives the mirror image of the first lock button. and is partially located within the notch. The release button is moved from the second holding position to the second release position, and the lock button is unlocked. In the disengaged position, the locking button is partially disposed within a mirror image first locking button receiving notch. It has been The second slider is In all positions of the release button and lock button, the release button moves axially. the second slider is at least partially disposed within the second slider opening so as to be movable; When the release button is in the first holding position and the lock button is in the first lock position, in the second cup-receiving notch, The release button is moved from the first holding position to the first release position, and the lock button When the button is in the unlocked position, it is partially located within the second lock button receiving notch. It is placed When the release button is in the second holding position and the lock button is in the second lock position, in the second cup-receiving notch, The release button is moved from the second holding position to the second release position, and the lock button is When the button is in the unlocked position, it is partially located within the second lock button receiving notch. It is placed A similar second slider is In all positions of the release button and lock button, the release button moves axially. a second slider at least partially disposed within a similar second slider opening for movement therethrough; When the release button is in the first holding position and the lock button is in the first lock position, in the first position, the first cup is partially disposed within a mirror image second cup-receiving notch; The release button is moved from the first holding position to the first release position, and the lock button When the lock button is in the unlocked position, a mirror image second lock button receiving notch It is partially arranged, When the release button is in the second holding position and the lock button is in the second lock position, in the first position, the first cup is partially disposed within a mirror image second cup-receiving notch; The release button is moved from the second holding position to the second release position, and the lock button is When the lock button is in the unlocked position, a mirror image second lock button receiving notch A handpiece coupler as described in clause X, partially deployed. XIII. The first holding position is when the blade without the damper cassette is held by the coupler. When accepted, it is obtained, The second holding position is where the blade cartridge containing the damper cassette is received by the coupler. When inserted, a handpiece coupler as described in clause XI is obtained. XIV. Any of clauses III to XIII, wherein the slider is a substantially rigid sphere. 10. The handpiece coupler of claim 1. XV. The first locking position is the first position with the cap a first distance away from the driver. configured to secure the cap in the retaining position; The second locking position is a second retention position in which the cap is spaced a second distance from the driver. the cap, as described in any one of clauses I to XIV, Handpiece coupler.

[0104] In the drawings, like reference numbers refer to like elements. Some or all of the elements may be modified. With respect to systems, methods, rules of thumb, etc., the steps of such processes are performed in some regular order. Although described as occurring in the order described herein, such a process may be It will be understood that the method may be practiced with the steps occurring in an order other than that shown. Furthermore, some steps may be performed simultaneously and other steps may be added. It is understood that some steps described herein may be omitted. In other words, the process descriptions herein are for illustrative purposes only. These are presented for the purpose of illustration only and should not be construed to limit the scope of the claims in any way. do not have.

[0105] Accordingly, it is to be understood that the above description is intended to be illustrative and not restrictive. It will be understood from reading the above description that many embodiments and many other examples are possible in addition to the examples provided. Many applications of the present invention will become apparent. The scope of the invention should be determined with reference to the above description. Instead, please refer to the appended claims and to the claims to which you are entitled. The full scope of equivalents to which the present invention pertains should be determined in accordance with the present invention. It is understood that future developments may occur and that the disclosed systems and methods may be adapted to such future embodiments. It is anticipated and intended that the present application will be incorporated into , it will be understood that modifications and variations may be made thereto.

[0106] As used herein, the adverb "substantially" refers to the shape, structure, measure, amount, time, etc. However, due to imperfections in materials, machining, manufacturing, data transmission, calculation speed, etc., This means that the geometry, distances, measurements, quantities, times, etc., may deviate from those described in do.

[0107] All terms used in the claims are expressly set forth in this specification to the contrary. Unless otherwise indicated, the terms used herein are not to be construed as giving their ordinary meaning as understood by those skilled in the art of the technology described herein. In particular, "a," "the," "said" )," etc., unless expressly stated to the contrary in the claims. To the extent that any reference to a component is made to a specific embodiment, it should be read as describing one or more of the components shown. do.

[0108] The Abstract is provided to allow the reader to quickly ascertain the nature of the technical disclosure. It is understood that the Abstract will not be used to interpret or limit the scope or meaning of the claims. In addition, in the above detailed description of the invention, various features are It is understood that the various embodiments have been grouped together for the purpose of streamlining the disclosure. This method of disclosure is such that the claimed embodiments are expressly set forth in each claim. interpreted as reflecting an intention to require more feature points than those specified. Rather, as the following claims reflect, inventive subject matter may be found in a single disclosure. As compared to all the features of the embodiment described above, the following features are present in fewer aspects. The claims below are presented with each claim standing on its own as separately claimed subject matter. and is incorporated herein into the detailed description of the invention.

Claims

1. A saw blade cartridge (48) for use with a powered surgical saw (22). hand, The cartridge includes a saw blade (28) and a cassette (50); The saw blade (28) a proximal portion (30) including a drive surface and a mounting axis (38, 102); a distal portion (32) including cutting teeth (46); a blade body (34) between said distal portion (32) and said proximal portion (30); Including, The cassette (50) is disposed above the proximal portion (30) and A first cassette portion (52) and a second cassette portion (54) are opposed across the proximal portion (30). (54), Each of the first cassette part (52) and the second cassette part (54) comprises: a shell having an outer surface and an opposed inner surface having an associated inner edge and a first stiffness; El (56, 58) and The shells (56, 58) have a second stiffness that is smaller than the first stiffness. a damper (60, 62) disposed on the inner surface; A saw blade cartridge (48) comprising:

2. The cassette portions (52, 54) are aligned with one another and The shells (56, 58) are fixed to the damper (6 0, 62) contact the proximal portion (30) and are fixed to each other.

2. The saw blade cartridge of claim 1.

3. 3. The saw blade according to claim 1, wherein the first stiffness is greater than the second stiffness. Cartridge.

4. 10. The method of claim 1, wherein the damper applies a predetermined clamping load to the proximal portion.

4. A saw blade cartridge according to any one of claims 1 to 3.

5. 5. The cassette of claim 1, wherein each of the cassette parts is identical. Saw blade cartridge.

6. The shells of the first cassette part and the second cassette part are made of a first material.

10. The damper according to claim 1, wherein the damper is formed from a first material.

10. The saw blade cartridge of claim 9.

7. The saw blade cartridge of claim 6 wherein the second material is an elastomer.

8. In front of the shell in each of the first cassette part and the second cassette part The inner surfaces define receiving pockets for the corresponding dampers, and each 8. The method of claim 6, wherein each pocket receives a corresponding damper. Saw blade cartridge.

9. each damper extending beyond the inner edge of its corresponding shell; A saw blade cartridge according to any one of claims 6 to 8.

10. The shells of the first cassette part and the second cassette part are The saw blade according to any one of claims 1 to 9, having an arc shape centered on the mounting axis. Grade cartridge.

11. The drive surface is defined by at least one of a notch and an opening.

11. A saw blade cartridge according to any one of claims 1 to 10.

12. 10. The method of claim 1, wherein the cassette does not entirely overlap the drive surface.

12. A saw blade cartridge according to any one of claims 1 to 11.

13. The proximal portion of the saw blade has a first thickness and is planar.

13. The blade of claim 1, wherein the blade body is planar and has a second thickness. A saw blade cartridge according to any one of claims 1 to 4.

14. The outer surfaces of the first cassette part and the second cassette part are planar.

14. The cartridge of claim 13, wherein the cartridge has a uniform third thickness across the outer surface. Saw blade cartridge included.

15. The shell in at least one of the first cassette portion and the second cassette portion 15. The method of claim 1, wherein the guide rail includes a connecting tab extending beyond the associated inner edge. A saw blade cartridge according to any one of claims 1 to 4.

16. 16. The saw blade of claim 15, wherein the connection tab is disposed within a connection opening in the saw blade. Saw blade cartridge.

17. The connecting tabs are secured to the shells of the opposing cassette portions.

17. A saw blade cartridge according to claim 15 or 16,

18. The damper is axially supported by the shell relative to the proximal portion of the saw blade.

18. The saw blade cartridge of any one of claims 1 to 17, wherein the saw blade cartridge is compressed in a direction perpendicular to the saw blade axis. 。

19. said dampers each subtending a continuous arc of at least 120 degrees. Item 19. The saw blade cartridge of any one of items 1 to 18.

20. a surgical saw blade (28) and a surgical saw blade cartridge (48); A handpiece coupler (26) for engaging the The coupler comprises: a housing head defining a pivot bore about an axis (38, 102); Axial fixed to the housing head and 102) and is formed therethrough to be pivotable about said axis (38, 1 a driver (108) defining a driver hole centered on said driver (102); a blade engaging prong (137) on a first surface of the bar and radially spaced from said axis; a driver (108) including The driver (108) is provided with a shaft (106) for movement therewith. and has an inner wall surface centered on the axis (38, 102). and a cap extending axially from the second face of the driver into the pivot hole. Top (112) and a driver hole and a cup (112) slidably disposed therein; Inside the driver hole and the cup, a pin (110) selectively axially displaceable; The pin (110) is fixed to the first end thereof and the prong (13 a cap (106) extending radially beyond the nozzle (7); to the second end of said pin (110) for selective engagement by a user. a release member that is fixed and defines a locking cavity (172) therein; (116), and further, the lock cavity (172) and the release member (116) and an outer surface of the release member (116) defining a wall (176) therebetween; The driver (108) is disposed between the pin (110), and the a coupler spring (118) biasing the pin (110) toward the closed position; A locking cavity (172) is slidably disposed therein. a locking member (170) having two locked positions and an unlocked position; A handpiece coupler (26) including:

21. The locking member forms a part of a position locking member, and the position locking member The locking member further includes a lock spring disposed between the locking member and the pin, 21. The method of claim 20, wherein a ring biases the locking member toward the locked position. Handpiece coupler.

22. The locking member forms a part of the position locking member, and the position locking member comprises: a first slider (184); a second slider (196); further comprising The release member (116) includes: an open first end of the cavity; The first slider (184) is slidably received therein and is axially and a first slider opening (182) extending through said wall at a first circumferential location; The second slider (196) is slidably received therein and is movable from the first position to the at a second location axially offset from the first location and circumferentially offset from the first location; a second slider opening (194) extending through said wall; 22. The handpiece coupler of claim 21, wherein:

23. The locking member extends beyond the first end of the wall in the locked position. and in the unlocked position, the locking member is substantially flush with the first end of the wall.

23. The handpiece coupler of claim 22.

24. The position locking member is adapted to lock the cup to permit selective engagement by the slider. a plurality of notches in the inner wall surface of the cap and in the outer surface of the locking member.

24. A handpiece coupler according to 22 or 23.

25. The plurality of notches are a first locking member receiving notch (190) in the outer surface of the locking member; a first cup receiving notch (186) in the inner wall surface of the cup; a second cup receiving notch (198) in the inner wall surface of the cup; a second locking member receiving notch (200) in the outer surface of the locking member; 25. The handpiece coupler of claim 24, comprising:

26. A first locked position is a first locking position in which the cap is spaced a first distance from the driver. configured to secure the cap in a retaining position; A second locked position is a second locking position in which the cap is spaced a second distance from the driver.

26. The method of claim 19, further comprising: fixing the cap in a retaining position.

10. The handpiece coupler according to claim 1.

27. A surgical saw system (20) comprising: a first saw blade cartridge having a proximal portion (30) including a drive surface and having a first thickness; With a proximal portion (30) including a drive surface and having a second thickness different from the first thickness; a second saw blade; and A handpiece (24) including a handpiece coupler (26), a plastic member attached to the proximal portion of one of the first saw blade cartridge or the second saw blade; A handpiece (24) for fixing the handpiece (24) to the handpiece (24). 24) and Including, The coupler comprises: a driver (108) pivotable about an axis (38, 102), A blade engaging prong (13) is provided on the first face of the driver at a position radially spaced from the axis. a driver (108) including A driver is disposed above the driver and extends radially beyond the prong (137). a cap (106) extending beyond the first saw blade or the second saw blade; the driver (10) to releasably secure one of the blades to the handpiece. a cap (106) axially movable relative to the cap (108); a locking member for fixing the cap to the driver, the locking member being in a first retaining position; and a second locking position defining a second retaining position. , a locking member; Including, The first retention position secures the proximal portion of the first saw blade relative to the coupler. To achieve this, the cap is positioned from the driver by a first distance corresponding to the first thickness. Keep them apart, The second holding position secures the proximal portion of the second saw blade relative to the coupler. the cap is spaced from the driver by a second distance corresponding to the second thickness. A surgical saw system (20) for moving and spacing.

28. The second saw blade further includes a cassette disposed on the proximal portion, In this case, the second thickness corresponds to the combination of the proximal portion and the cassette.

28. The surgical saw system of claim 27.

29. The cassette has a first cassette portion (52) opposite the proximal portion (30). and a second cassette part (54), Each of the first cassette part (52) and the second cassette part (54) comprises: a shell having an outer surface and an opposed inner surface having an associated inner edge and a first stiffness; El (56, 58) and The shells (56, 58) have a second stiffness that is smaller than the first stiffness. a damper (60, 62) disposed on the inner surface; Including, The cassette portions (52, 54) are aligned with one another and The shells (56, 58) are fixed to the damper (6 0, 62) contact the proximal portion (30) and are fixed to each other.

30. The surgical saw system of claim 28.

30. The driver is formed therethrough and is centered on the axis (38, 102). It specifies the hole for the spur. a driver bore slidably disposed therein, the driver bore having: A pin (110) selectively axially displaceable relative to the driver hole. , including The cap (106) is secured to the first end of the pin (110).

30. A surgical saw system according to any one of claims 27 to 29.

31. to the second end of said pin (110) for selective engagement by a user. a release member that is fixed and defines a locking cavity (172) therein; and further, the lock cavity (172) and the outer surface of the release member are a release member defining a wall (176) therebetween; The locking member is slidably disposed within the locking cavity (172).

31. The surgical saw system of claim 30.

32. a surgical saw blade (28) and a surgical saw blade cartridge (48); A handpiece coupler (26) for engaging the The coupler comprises: a housing head defining a pivot bore about an axis (38, 102); Axial fixed to the housing head and 102) and further having a first surface and a second surface spaced radially from the axis. a driver (108) including a blade engaging prong (137) at the A driver is disposed above the driver and extends radially beyond the prong (137). a cap (106) extending beyond the surgical saw blade (28) or the front One of the surgical saw blade cartridges (48) is releasably attached to the handpiece. A cap (108) is axially movable relative to the driver (108) to secure the cap (108). 106) and A locking member for fixing the cap to the driver, comprising two locking members. a locking member having a locked position and an unlocked position; Including, A first locked position is a first locking position in which the cap is spaced a first distance from the driver. configured to secure the cap in a retaining position; A second locked position is a second locking position in which the cap is spaced a second distance from the driver. a handpiece coupler (26) configured to secure the cap in a holding position; ）。

33. The driver is formed therethrough and is centered on the axis (38, 102). It specifies the hole for the spur. a driver bore slidably disposed therein, the driver bore having: A pin (110) selectively axially displaceable relative to the driver hole. , including The cap (106) is secured to the first end of the pin (110).

33. The handpiece coupler of claim 32.

34. to the second end of said pin (110) for selective engagement by a user. a release member that is fixed and defines a locking cavity (172) therein; and further, the lock cavity (172) and the outer surface of the release member are a release member defining a wall (176) therebetween; The locking member is slidably disposed within the locking cavity (172).

34. The handpiece coupler of claim 33.

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