41 results about "Surgical saw" patented technology

In general, devices, systems, and methods for assembly and operation of a handheld oscillating surgical saw are provided. In exemplary embodiments, a surgical tool includes a handpiece comprising a coupling head that includes a slot and a magnet, the slot being configured to releasably receive a surgical saw blade configured to cut bone, and the magnet being configured to magnetically attract the saw blade, wherein the coupling head is configured to move between a first position, in which the slot has a first height and the coupling head is configured to selectively receive the surgical saw blade therein and release the surgical saw blade therefrom, and a second position, in which the slot has a second height that is less than the first height and the coupling head is configured to fixedly seat the saw blade therein.

A passive end effector of a surgical system includes a base, a first mechanism, and a second mechanism. The base attaches to an end effector coupler of a robot arm positioned by a surgical robot. The first mechanism extends between a rotatable connection to the base and a rotatable connection to a tool attachment mechanism. The second mechanism extends between a rotatable connection to the base and a rotatable connection to the tool attachment mechanism. The first and second mechanisms pivot about the rotatable connections to constrain movement of the tool attachment mechanism to a range of movement within a working plane. The tool attachment mechanism is configured to connect to a surgical saw including a saw blade for cutting.

The utility model relates to a washable trephine and a navigable surgical saw, which are applied to the surgical saw, the surgical saw comprises a trephine body and an endoscope, the trephine body is columnar, the middle part of the trephine body is hollow and serves as an observation cavity, the endoscope extends into the observation cavity, and one end of the trephine body is provided with a zigzag structure which is annularly arranged and serves as an operation end; the cavity wall of the observation cavity is provided with a radial through flushing hole, and the flushing hole is arranged close to the operation end. According to the scheme, the flushing hole is formed in the position, close to the operation end, of the trephine body and penetrates through the cavity wall of the observation cavity, that is, the flushing hole is connected with the observation cavity, flushing fluid, blood, sclerotin and the like can be discharged out of the flushing hole in time, and due to the fact that the flushing hole is close to the operation end, the flushing hole is adjacent to the working position of the endoscope; therefore, the flushing and liquid discharging efficiency of the visual field in front of the endoscope can be improved, images at the operation end can be clearly shot by the endoscope, the influence on the operation visual field of a doctor is reduced, and surgical operation of the doctor is facilitated.

A passive end effector of a surgical system includes a base connected to a rotational disk, and a saw attachment connected to the rotational disk. The base is attached to an end effector coupler of a robot arm positioned by a surgical robot, and includes a base arm extending away from the end effector coupler. The rotational disk is rotatably connected to the base arm and rotates about a first location on the rotational disk relative to the base arm. The saw attachment is rotatably connected to the rotational disk and rotates about a second location on the rotational disk. The first location on the rotational disk is spaced apart from the second location on the rotational disk. The saw attachment is configured to connect to a surgical saw including a saw blade configured to oscillate for cutting. The saw attachment rotates about the rotational disk and the rotational disk rotates about the base arm to constrain cutting of the saw blade to a range of movement along arcuate paths within a cutting plane.

The present application relates to a surgical system. The passive end effector of the surgical system includes a base, a first mechanism, and a second mechanism. The base is attached to an end effector connector of a robotic arm positioned by a surgical robot. The first mechanism extends between a rotatable connection to the base and a rotatable connection to a tool attachment mechanism. The second mechanism extends between a rotatable connection to the base and a rotatable connection to the tool attachment mechanism. The first mechanism and the second mechanism pivot about the rotatable connection to limit the movement of the tool attachment mechanism to a range of movement within a working plane. The tool attachment mechanism is configured to be connected to a surgical saw, which includes a saw blade for cutting.

A surgical rotary file, the surgical rotary file comprising a prevention device, an attachment device and a working part, the working part comprising at least one working device, the at least one working device for processing a material selected from bone, cartilage, calcified tissue, teeth and foreign objects in a patient 5, wherein the working device is selected from a grinding surface and a flute defining a cutting edge. The prevention device is configured to have a first position and a second position. In the first position, when the force applied to the prevention device is less than a predetermined amount of force, the prevention device at least partially prevents the working device from processing the material. In the second position, when the force applied to the prevention device is equal to or greater than the predetermined amount of force, the prevention device allows the working device to process the material.

A splash guard for use with a surgical tool includes a shield and a coupling mechanism configured to removably couple the shield to the surgical tool body. The coupling mechanism cooperates with the shield such that during operation of the saw, the shield is not centered within a plane defined by the reciprocating motion of the saw blade. The shield can be formed from a clean shrink wrap supported by a frame. The coupling mechanism can include a rotatable clip coupling with detents for predefined positions. The splash guard can be configured to fit straight or angled surgical saws and is sterilized and disposable.

A surgical blade carrier includes a guide bar formed of three plates. The bracket has a saw blade extending distally from a guide bar, the saw blade including a saw blade head, the saw blade head including a plurality of teeth. The guide bar may be configured to have opposing edges that define mounting features for inverting the guide bar within a mount of a surgical saw. One of the plates may be configured to define a reference feature configured to register and / or verify a pose of the carriage with a navigation system. A method of registering the cradle within a known coordinate system is disclosed. The method may include determining a deviation between an expected position of the carriage and an actual position of the carriage based on a reference feature, and defining a mixed position of the carriage within a known coordinate system based on the deviation.

A surgical saw blade for removably securing a surgical saw blade to a surgical saw. The surgical saw blade coupler comprises a cassette that is separable from the surgical saw and configured to removably receive a proximal portion of a surgical saw blade. The cassette includes first and second cassette portions configured to be disposed on opposed sides of the surgical saw blade. Each of the cassette portions comprises a shell and a damper. The damper is disposed on the shell and configured to contact the surgical saw blade. The shell of each of the first and second cassette portions are formed of a first material having a first stiffness and the dampers are formed of a second material having a second stiffness that is less than the first stiffness.

A sheathed blade assembly (100) is used to minimize or prevent contact between a moving inner blade and an outer sheath. The assembly includes: an outer sheath (106) having a first portion (110) and a second portion (112) with an inner cavity (132) between the first portion and the second portion; an inner blade (108) movable within the inner cavity of the outer sheath; a first recess (150A) within a first surface (152) of the inner blade; and a first ball bearing (148) within the first recess. The first ball bearing creates a clearance between the first surface of the inner blade and the first portion of the outer sheath. The assembly may also include a second recess (150B) for a second ball bearing (148) within a second surface (154) of the inner blade. The second ball bearing creates a clearance between the second surface of the inner blade and the second portion of the outer sheath. The second recess is in a staggered configuration relative to the first recess.

A surgical saw blade configured for oscillatory resection of bone, the saw blade including a body defining a longitudinal axis (L). The body including a mounting portion and a distal portion, the distal portion and the mounting portion formed integrally with one another such that oscillation of the mounting portion results in oscillation of the distal portion. The distal portion having teeth formed on a blade head. The mounting portion defining a series of apertures including a first aperture shaped for receiving a biasing actuator, and a second aperture including a second proximal end and a second distal end. The mounting portion includes a peninsula portion extending away from the first aperture and configured for retaining the saw blade in a saw mount, the peninsula portion is partially surrounded by the second aperture, and the peninsula portion defines an area less than an area defined by the rear second aperture.

A surgical saw blade cartridge that includes a guide bar formed from three plates. The cartridge has a blade that extends distally from the guide bar, the blade comprising a blade head including a plurality of teeth. The guide bar may be configured to have opposed edges that define a mounting feature for orienting the guide bar within the mount the surgical saw. One of the plates may be configured to define a reference feature configured to register and / or verify the pose of the cartridge with a navigation system. A method of registering the cartridge within a known coordinate system is disclosed. The method may comprise determining the deviation between an expected position of the cartridge and an actual position of the cartridge based on the reference feature and defining a hybrid position of the cartridge within the known coordinate system based on the deviation.

In general, devices, systems, and methods for assembling and operating a handheld oscillating surgical saw (100) are provided. In an exemplary embodiment, a surgical tool includes a handpiece including a coupling head (106) including a slot configured to releasably receive a surgical saw blade (108) configured to cut bone, and a magnet (in a magnet housing 204) configured to magnetically attract the saw blade (108), wherein the coupling head (106) is configured to move between a first position, in which the slot has a first height and the coupling head is configured to selectively receive and release the surgical saw blade (108) therein, and a second position, in which the coupling head (106) has a second height and is configured to selectively receive and release the surgical saw blade (108) therefrom. The slot has a second height less than the first height and a coupling head (106) is configured to fixedly seat a saw blade (108) therein.

Sensing technology methods related thereto for determining cut through of bone and a depth of penetration of a working portion of a surgical instrument (e.g., an oscillating saw blade in a cut). A first sensor outputs a first signal representative of a displacement of the cutting edge of the saw blade in the cut. A second sensor outputs a second signal representative of a force applied to the cutting edge of the saw blade. As such, monitoring the first and / or second sensor may allow for the saw to be stopped upon completion of a cut (e.g., when the saw passes completely through a medium to be cut or upon reaching a predetermined depth for the cut).

A surgical system and method of operating the same include a manipulator with a base, a robotic arm coupled to the base, and a saw tool coupled to the robotic arm to perform a cut of a bone. A control system is coupled the manipulator and obtains data defining a cutting plane for the bone and a pre-determined depth of the bone to be cut by the saw tool along the cutting plane. The control system associates a virtual planar boundary with the bone along the cutting plane and controls the manipulator to autonomously align the saw tool to the cutting plane. The control system controls the manipulator to activate and autonomously move the saw tool along the cutting plane to perform the cut. Autonomous movement of the saw tool is constrained to remain within the virtual planar boundary and not exceed the pre-determined depth.

A surgical blade 54 for a surgical saw is described. The surgical blade 54 comprises a body portion 58 having a proximal end 60, a distal end, and a length between the proximal and distal ends, with the body portion 58 having opposed top and bottom surfaces 64, 66 and opposed first and second side surfaces 68, 70 between the top and bottom surfaces 64, 66. The body portion 58 has one or more teeth that extend outwardly from at least one of the top and bottom surfaces 64, 66 and the body portion 58 has a first region 94 adjacent the proximal end 60 of the body portion 58 and a second region 96 adjacent the first region 94, with the opposed side surfaces 68, 70 defining a first thickness at the first region 94 of the body portion 58 and a second thickness larger than the first thickness at the second region 96 of the body portion 58. The surgical blade 54 further comprises a mount feature 112 to releasably attach the blade 54 to the surgical saw, wherein the mount feature 112 comprises a protrusion 112 extending outwardly from the body portion 58. The surgical blade 54 still further comprises a reinforcing member 56 integrally formed with the blade 54 and comprising a rib 135 extending from the second region 96 of the body portion 58 of the blade 54 and into the first region 94 at least far enough to be axially closer to the proximal end 60 of the body portion 58 than the mount feature 112 and to act as a strut to reinforce the body portion 58.

Surgical tool (10), in particular a sterile, surgical saw, comprising the following: - a housing (20) with a handle (30); - a drive (40) which is arranged non-rotatably in the housing (20) and has a rotating drive shaft (41) along a longitudinal axis (102) of the housing (20); - an electrical energy unit (70) for electrically powering the drive (40) via a control unit (90); - a switch (80) for actuating the drive (40); wherein the electrical energy unit (70) is arranged along a transverse axis (101) transverse to the longitudinal axis (102) and is detachable and removable in the handle (30), wherein the drive (40) is detachably and removably arranged in the housing (20), - an eccentric arrangement (45) which is assigned to the drive shaft (41); - an oscillating member (50) having an output shaft (51) connected to a tool (60) via a connecting piece (52); wherein the eccentric arrangement (45) is operatively connected to the oscillating member (50) in a region (100) along the longitudinal axis (102), wherein the drive shaft (41) is operatively connected to the tool (60) via the eccentric arrangement (45), the oscillating member (50), the output shaft (51), the connecting piece (52) in such a way that the rotary movement of the drive shaft (41) is converted into an oscillating movement of the tool (60), characterized in that the eccentric arrangement (45) is directly operatively connected to the oscillating member (50), the tool (60) is a saw blade and the control unit (90) is arranged detachably and removably in the housing (20).

A sheathed blade assembly for minimizing or preventing contact between the moving interior blade and the exterior sheath. The assembly includes an exterior sheath having a first portion and second portion with an inner lumen therebetween, an interior blade movable within the inner lumen of the exterior sheath, a first pocket within a first surface of the interior blade, and a first ball bearing within the first pocket. The first ball bearing creates a clearance amount between the first surface of the interior blade and the first portion of the exterior sheath. The assembly may also include a second pocket within a second surface of the interior blade for a second ball bearing. The second ball bearing creates a clearance amount between the second surface of the interior blade and the second portion of the exterior sheath. The second pocket is in a staggered configuration relative to the first pocket.

A system for providing fixation of first and second bones includes a drill guide that receives a drill bit to create first and second holes in the first and second bones, respectively. Guide pins can be driven into the first and second holes. The guide pins are received by a surgical saw to guide the surgical saw toward a joint between the first and second bones, thereby creating a third hole in each of the bones across the joint. The guide pins are then removed, and an implant can be inserted into the bones, such that a first leg of the implant is disposed in the first hole, a second leg of the implant is disposed in the second hole, and a keel of the implant is disposed in the third hole.

In general, devices, systems, and methods for assembly and operation of a handheld oscillating surgical saw are provided. In exemplary embodiments, a surgical tool includes a handpiece comprising a coupling head that includes a slot and a magnet, the slot being configured to releasably receive a surgical saw blade configured to cut bone, and the magnet being configured to magnetically attract the saw blade, wherein the coupling head is configured to move between a first position, in which the slot has a first height and the coupling head is configured to selectively receive the surgical saw blade therein and release the surgical saw blade therefrom, and a second position, in which the slot has a second height that is less than the first height and the coupling head is configured to fixedly seat the saw blade therein.

Surgical tool (10), in particular an aseptic surgical saw, comprising: - a housing (20) with a handle (30); - a drive (40) which is arranged in the housing (20) in a rotationally fixed manner and has a rotating drive shaft (41) along a longitudinal axis (102) of the housing (20); - an electrical energy unit (70) for supplying electricity to the drive (40) via a control unit (90); - a switch (80) for actuating the drive (40); wherein the electrical energy unit (70) is arranged along a transverse axis (101) transverse to the longitudinal axis (102) and detachably and removably in the handle (30), wherein the drive (40) is arranged detachably and removably in the housing (20), - an eccentric arrangement (45) associated with the drive shaft (41); - an oscillating member (50) having an output shaft (51) connected to a tool (60) via a connecting piece (52); wherein the eccentric arrangement (45) is operatively connected to the oscillating member (50) in a region (100) along the longitudinal axis (102), wherein the drive shaft (41) is operatively connected to the tool (60) via the eccentric arrangement (45), the oscillating member (50), the output shaft (51), the connecting piece (52) in such a way that the rotary movement of the drive shaft (41) is converted into an oscillating movement of the tool (60), characterized in that the eccentric arrangement (45) is directly operatively connected to the oscillating member (50), the tool (60) is a saw blade and the control unit (90) is arranged detachably and removably in the housing (20).

The utility model relates to the field of medical instruments, and discloses a sawing and grinding tool bit and a sawing and grinding tool for an operation, and the sawing and grinding tool bit comprises a base plate, a connecting handle and a tooth part; the connecting handle is fixed at one end of the base plate; the tooth part is fixed to the end, away from the connecting handle, of the base plate, and a plurality of saw grinding teeth are arranged on the tooth part; continuous tooth blades are designed on the edges of the saw grinding teeth, and the tooth blades are distributed on the front side and the rear side of the tooth part and the side away from the base plate. The sawing and grinding teeth are arranged on the sawing and grinding knife head, so that the sawing and grinding knife can be used as a sawing knife and can also be used as a grinding knife, the time for a surgeon to switch the knife in an operation can be shortened, the operation time is shortened, and the operation risk of a patient is reduced.

In general, apparatus, systems and methods are provided for assembling and operating a handheld vibrating surgical saw (100). In exemplary embodiments, the surgical tool includes a handpiece comprising a connecting head (106) including a slot and a magnet (in a magnetic housing 204), wherein the slot is configured to releasably receive a surgical saw blade (108) configured to cut bone, the magnet is configured to magnetically attract the saw blade (108), and the connecting head (106) is configured to move between a first position in which the slot has a first height and the connecting head is configured to selectively receive the surgical saw blade (108) internally and release the surgical saw blade (108) therefrom, and a second position in which the slot has a second height lower than the first height and the connecting head (106) is configured to fixally seat the saw blade (108) internally.

The utility model provides an orthopedic surgery saw, and relates to the technical field of medical instruments. The orthopedic surgery saw comprises a barrel, a power device, a switch device, a saw blade and a power source. The power device comprises a motor, an eccentric wheel, a transmission wheel and a transmission part; the motor is installed on the barrel, the eccentric wheel is fixedly connected with the output end of the motor and arranged in the barrel, the transmission wheel is fixedly connected with the eccentric wheel, and the transmission part is in transmission connection with the transmission wheel and hinged to the barrel. The saw blade is detachably mounted on the transmission part; the switch device comprises a pressing piece, a spring and a pressing switch; the pressing piece is inserted into the barrel, one end of the spring is fixedly connected with the inner wall of the barrel, the other end of the spring is fixedly connected with the pressing piece, the pressing switch is arranged in the barrel, and one end of the pressing switch is electrically connected with the motor. According to the orthopedic operation saw, the technical problems that when an existing orthopedic operation saw is used by medical staff, the cutting angle is inconvenient to adjust, and the flexibility of using the orthopedic operation saw is poor are solved.

A saw blade cartridge comprises a saw blade and a cassette. The cassette is disposed over a proximal portion of the saw blade and includes first and second cassette portions opposing each other across the proximal portion. Each portion comprises a shell and a damper. The shells are of a first stiffness and have an outer side. The dampers are of a second stiffness less than the first stiffness and are disposed on an inner side of the shell. The cassette portions are substantially fixed relative to the proximal portion and are substantially aligned with each other. The shells are fixed to each other. The dampers contact the proximal portion. A handpiece coupler for engaging either of the saw blade cartridge or a saw blade includes a release button with a lock button slidably disposed therein to resist unintended opening.

A surgical saw blade is provided having an upper surface and a lower surface and including a first end having a right side edge and a left side edge, wherein the first end is configured to connect to a vibrating head of a powered saw. The saw blade also has a cutting end; and an elongated shank connecting the first end and the cutting end. The first end of the saw blade can be narrower than the shank, and a stop surface can connect the first end to the elongated shank. The stop surface is configured to engage the vibrating head of the powered saw in order to ensure proper positioning of the saw blade relative to the vibrating head. The elongated shank of the saw blade can have an elongated aperture through the shank, wherein the elongated aperture is sized and shaped to optimize the resonant frequency and / or dynamic stiffness of the saw blade. The cutting end of the saw blade can have a plurality of first teeth thereon, wherein each first tooth is mounted on a distal end of a tine. Each pair of adjacent tines is separated by a longitudinal slot, wherein a distal end of each longitudinal slot is bridged by a web connecting the corresponding pair of adjacent tines.

This invention relates to a surgical blade assembly having a gap between the outer sheath and the inner blade in order to minimize wear. [Solution] A covered blade assembly for minimizing or preventing contact between a movable inner blade 108 and an outer sheath. The assembly includes an outer sheath having a first portion 110 and a second portion 112 with an inner lumen 132 between them; an inner blade movable within the inner lumen of the outer sheath; a first pocket within the first surface of the inner blade; and a first ball bearing 148 within the first pocket. The first ball bearing creates a clearance between the first surface of the inner blade and the first portion of the outer sheath. The assembly may also include a second pocket for a second ball bearing 148 within the second surface of the inner blade. The second ball bearing creates a clearance between the second surface of the inner blade and the second portion of the outer sheath. The second pocket is configured to be offset from the first pocket.

A surgical sagittal saw blade for use with a surgical saw. The saw blade including a planar blade body having a proximal portion, an intermediate portion, and a distal portion. The proximal portion defines a geometric feature configured for mounting the saw blade to the surgical saw. The saw blade including a blade head extending from the distal portion of the planar blade body and including a plurality of teeth arranged adjacent to one another across at least a portion of a width of the blade head. Each of the plurality of teeth having a top surface and an opposed bottom surface and one of the top or the bottom surface of each of the plurality of teeth comprises is beveled. The beveling is alternatingly applied to the opposite of the top or the bottom surface of the adjacent teeth of each of the plurality of teeth.

Surgical systems and methods involve a surgical cutting that includes a housing, a saw blade configured to attach to the housing, and a motor located in the housing to operate the saw blade for cutting a bone. A blade guide is coupled to the housing and includes at least one wall configured to slidably contact the saw blade to prevent flexion of the saw blade. The blade guide includes a biasing device configured to passively bias the blade guide towards an extended position. In response to contact between the blade guide and the bone, the blade guide is configured to passively retract away from the extended position and against the bias of the biasing device.