Patent application number | Description | Published |
20080228199 | ENDOSCOPIC TISSUE APPROXIMATION METHOD - The present invention generally provides methods and devices for approximating tissue. The methods and devices utilize a device for applying an implantable tissue fastener and a variety of implantable tissue fasteners. The tissue-fastening device can be delivered endoscopically and can be adapted to function along side or in conjunction with a flexible endoscope. In general, the device can include a flexible shaft having an implantable tissue fastener applier disposed at a distal end thereof and a handle for operating the implantable tissue fastener applier disposed at a proximal end thereof. A variety of implantable tissue fasteners can be used with the tissue fastener applier device including single and multi-anchor embodiments. | 09-18-2008 |
20080228202 | ENDOSCOPIC TISSUE APPROXIMATION SYSTEM - The present invention generally provides methods and devices for approximating tissue. The methods and devices utilize a device for applying an implantable tissue fastener and a variety of implantable tissue fasteners. The tissue-fastening device can be delivered endoscopically and can be adapted to function along side or in conjunction with a flexible endoscope. In general, the device can include a flexible shaft having an implantable tissue fastener applier disposed at a distal end thereof and a handle for operating the implantable tissue fastener applier disposed at a proximal end thereof. A variety of implantable tissue fasteners can be used with the tissue fastener applier device including single and multi-anchor embodiments. | 09-18-2008 |
20080234703 | TISSUE APPROXIMATION SYSTEM - Methods and devices for approximating tissue are disclosed. The methods and devices utilize a device for applying an implantable tissue fastener and a variety of implantable tissue fasteners. The tissue-fastening device can be delivered endoscopically and can be adapted to function along side or in conjunction with a flexible endoscope. In general, the device can include a flexible shaft having an implantable tissue fastener applier disposed at a distal end thereof and a handle for operating the implantable tissue fastener applier disposed at a proximal end thereof. A variety of self-deploying implantable tissue fasteners can be used with the tissue fastener applier device. | 09-25-2008 |
20080234705 | TISSUE APPROXIMATION METHODS - Methods and devices for approximating tissue are disclosed. The methods and devices utilize a device for applying an implantable tissue fastener and a variety of implantable tissue fasteners. The tissue-fastening device can be delivered endoscopically and can be adapted to function along side or in conjunction with a flexible endoscope. In general, the device can include a flexible shaft having an implantable tissue fastener applier disposed at a distal end thereof and a handle for operating the implantable tissue fastener applier disposed at a proximal end thereof. A variety of self-deploying implantable tissue fasteners can be used with the tissue fastener applier device. | 09-25-2008 |
20080275474 | SUTURE ANCHOR LOADER - A suture anchor loader comprises a housing with a port. A channel extends into the housing from the port, the channel being dimensioned to receive a surgical needle. A suture anchor is preloaded in the channel with a length of suture connected to the suture anchor and stored in the housing. A push rod is slideably positioned in the channel such that the suture anchor is intermediate the push rod and the port. An actuator is operatively connected to push rod to selectively deploy the anchor into the needle. | 11-06-2008 |
20080275475 | LOADER FOR KNOTTING ELEMENT - A device for loading a surgical knotting element on an applicator tool. One embodiment of the device includes a channel dimensioned to receive an applicator tool comprising a coupling. A surgical knotting element comprises a coupling complementary to the coupling of an applicator tool and a suture path. A carriage receives the surgical knotting element. The carriage is moveable in a transverse direction relative the channel between a first position where the knotting element is misaligned with the channel and a second position where the couplings are engaged with one another. | 11-06-2008 |
20080275476 | THREADER FOR KNOTTING ELEMENT - A device for threading suture into a surgical knotting element. In one embodiment the device comprises a knotting element having an inner tubular member, an outer tubular member, and a nonlinear suture path. A flexible suture guide has a proximal portion, a distal portion comprising a flared loop positioned outside the suture path, and a medial portion intermediate the proximal and distal portions, the medial portion being preloaded in the suture path. | 11-06-2008 |
20080281354 | Surgical Fastener - A surgical fastener for fastening tissue. The fastener includes a first piece of sheet material formed to have a generally planar base and an elongate needle portion extending upward from the base. The fastener includes a second piece of sheet material formed to have a generally planar base and an elongate needle portion extending upward from the base. The second piece of sheet material is pivotally connected to the first piece of sheet material. | 11-13-2008 |
20080300624 | Tissue Stabilizer and Fastener - A surgical instrument for applying a fastener to tissue of a patient. The instrument includes an elongate shaft having a working end and a grip end opposite the working end. The instrument includes opposing stationary jaws mounted on the working end of the elongate shaft defining a gap between the jaws. The gap is sized and shaped for receiving tissue. At least one of the jaws includes a fastener ejector directed toward the gap for introducing a fastener into tissue received in the gap to selectively fasten the tissue with the fastener. The instrument includes a mechanism operatively connected to the fastener ejector for introducing the fastener into the tissue thereby applying the fastener to the tissue of the patient. | 12-04-2008 |
20080300627 | Surgical Instrument - A surgical instrument for applying a fastener to tissue. The fastener includes a male component including a base having a hole, a needle receivable in the hole, and a female component including a base and a recess for receiving the needle. The instrument includes a shaft, a first jaw pivotally mounted on the shaft including a receiver for holding the base one component, and a second jaw statically mounted on the shaft including a receiver for releasably holding the base the other component. The first jaw is moveable between an open position and a closed position. The first and/or second jaw includes a channel for slideably receiving a needle. The instrument includes a mechanism for moving the first jaw between the open and closed positions and an ejector for driving the needle through the hole in the male component, through tissue and into the recess of the female component. | 12-04-2008 |
20090118751 | APPARATUS AND METHOD FOR ALERTING GENERATOR FUNCTIONS IN AN ULTRASONIC SURGICAL SYSTEM - The present invention provides a system for surgery which includes an ultrasonic hand piece having a end-effector, a console having a digital signal processor (DSP) for controlling the hand piece, and a memory disposed in the end-effector. The generator console sends a drive current to drive the hand piece which imparts ultrasonic longitudinal movement to the blade. As the generator console reads the memory, the hand piece is authenticated for use with the generator console if a copyrighted data string is present in the memory. In a particular embodiment, the data string is an encrypted code, where the hand piece is authenticated for use with the console by decoding a corresponding encryption algorithm resident in the generator console and providing a responding data pattern. | 05-07-2009 |
20090299409 | ENDOSCOPIC SUTURING TENSION CONTROLLING AND INDICATION DEVICES - Various exemplary methods and devices are provided for tensioning sutures. The methods and devices are particularly useful in surgical suturing applications in which it is desirable to maintain tension on a suture being delivered. In various embodiments, the device is incorporated into the handle of a suture device configured to deliver a suture to a surgical site. Other embodiments comprise a device that is separate from, but may be used in connection with, a suture device configured to deliver a suture to a surgical site. A suture locking device is also provided which enables the surgeon to ascertain when a desired amount of tension has been applied to a suture prior to affixing knotting tying elements thereto. | 12-03-2009 |
20100065605 | END EFFECTOR FOR USE WITH A SURGICAL CUTTING AND STAPLING INSTRUMENT - An end effector for a surgical cutting and stapling instrument. In various embodiments, the end effector may include an elongate channel that is configured to support a staple cartridge therein and which is also operably coupled to a surgical cutting and stapling instrument. An anvil may be movably supported relative to the elongate channel for selective movement between an open position and a closed position wherein tissue is clamped between the anvil and a staple cartridge supported within the elongate channel in response to a closing motion applied thereto from the surgical cutting and stapling instrument. At least one light source may be provided on at least one of the staple cartridge and the elongate channel. The light sources may interface with the anvil to provide a visual indication viewable through a portion of the anvil to indicate a position of tissue clamped between the anvil and the staple cartridge. | 03-18-2010 |
20100065609 | SURGICAL STAPLING INSTRUMENT WITH DEVICE FOR INDICATING WHEN THE INSTRUMENT HAS CUT THROUGH TISSUE - Circular stapling instruments for cutting and applying one or more surgical staples to tissue are disclosed. The instruments include various forms of feedback systems designed to provide at least one mode of feedback to the surgeon when the knife has cut through tissue clamped between a staple cartridge and an anvil portion. | 03-18-2010 |
20100089970 | POWERED SURGICAL CUTTING AND STAPLING APPARATUS WITH MANUALLY RETRACTABLE FIRING SYSTEM - In one general aspect, various embodiments of the present invention can include a motorized surgical cutting and fastening instrument having a drive shaft, a motor selectively engageable with the drive shaft, and a manual return mechanism configured to operably disengage the motor from the drive shaft and retract the drive shaft. In at least one embodiment, a surgeon, or other operator of the surgical instrument, can utilize the manual return mechanism to retract the drive shaft after it has been advanced, especially when the motor, or a power source supplying the motor, has failed or is otherwise unable to provide a force sufficient to retract the drive shaft. | 04-15-2010 |
20100106166 | METHODS AND DEVICES FOR APPLYING MULITPLE SUTURE ANCHORS - Methods and devices are provided for deploying and applying multiple suture anchors. In one embodiment, a surgical device is provided having a shaft configured to be introduced into a body, e.g., through a scoping device, and to deliver a plurality of suture anchors, each having a suture attached thereto, into tissue, preferably without the need to remove the shaft from the body. The shaft can be configured to penetrate tissue and to deploy one or more of the suture anchors through the tissue such that the sutures extending from the deployed suture anchors extend through the tissue to allow the anchors to engage the tissue. The surgical device can also include a knotting mechanism configured to secure the sutures attached to the deployed anchors, thereby securing the anchors to the tissue. | 04-29-2010 |
20110006101 | MOTOR DRIVEN SURGICAL FASTENER DEVICE WITH CUTTING MEMBER LOCKOUT ARRANGEMENTS - A surgical fastener apparatus having a handle, an elongated shaft having a proximal end attached to the handle and a distal end extending therefrom. An end effector including a pair of jaws pivoted at a proximal end thereof and movable between an open and closed position. A cartridge containing a plurality of surgical fasteners, the cartridge attached to the end effector. An electrically powered actuator for deploying the surgical fasteners, the actuator having a power source and a motor. A first trigger attached to the handle for moving the end effector from the open to the closed position, and a second trigger attached to the handle for activating the actuator. A first lockout mechanism for preventing current from flowing from the power source to the motor unless the end effector is in its closed position a second lockout mechanism having a locked and unlocked position, the second lockout mechanism for preventing movement of the second trigger until the second lockout mechanism is moved to the unlocked position. | 01-13-2011 |
20110006103 | MOTOR DRIVEN SURGICAL FASTENER DEVICE WITH CUTTING MEMBER REVERSING MECHANISM - A surgical fastener apparatus including a handle, an elongated shaft having a proximal end attached to the handle and a distal end extending therefrom. An end effector comprising a pair of jaws pivoted at a proximal end thereof and movable between an open and closed position, and a cartridge containing a plurality of surgical fasteners, the cartridge attached to the end effector. An electrically powered actuator for deploying the surgical fasteners. An electrically activated reverse mechanism for moving the elongated member from a distal most position within the end effector to a proximal position, the electrically activated reverse mechanism moves the elongated member proximally after the elongated member has moved to the distal most position by moving the trigger to the open position, and wherein after activation of the reverse mechanism proximal movement of the elongated member can be stopped by returning the trigger to its closed position. | 01-13-2011 |
20120071711 | SURGICAL INSTRUMENTS AND BATTERIES FOR SURGICAL INSTRUMENTS - Various embodiments are directed to battery packs for use with surgical instruments. The battery packs may comprise a plurality of cells and at least a portion of the plurality of cells may not be electrically connected to one another. The battery packs may comprise a switch or other mechanism for interconnecting the plurality of cells and may also comprise, or be used in conjunction with, a discharge switch or plug configured to electrically connect an anode of the battery pack to a cathode of the battery pack, for example, via a resistive element. | 03-22-2012 |
20120071866 | POWER CONTROL ARRANGEMENTS FOR SURGICAL INSTRUMENTS AND BATTERIES - Various embodiments are directed to battery unit for use with surgical instruments. The battery units may comprise a plurality of cells and include a translatable discharge drain. When attached to the surgical instrument, the discharge drain may electrically connect an anode of the battery unit to a cathode of the battery unit, for example, via a resistive element in order to drain the battery unit. | 03-22-2012 |
20120080333 | FASTENER SYSTEM COMPRISING A RETENTION MATRIX - A surgical fastener system can comprise a plurality of fasteners which can be connected to one another by a retention matrix which is assembled to the fasteners in order to capture tissue therebetween. In various embodiments, each fastener can comprise a base and the distance in which the retention matrix is seated relative to the fastener bases can be selectively determined by a surgeon in order to apply a desired pressure to the tissue. In certain embodiments, each fastener can further comprise a fastener leg and the retention matrix can comprise a first layer configured to engage the fastener legs. The retention matrix can further comprise a second layer mounted to the first layer which can comprise one or more encapsulations containing a medicine therein. The encapsulations can be aligned with retention apertures in the retention matrix such that they can be punctured by the fastener legs. | 04-05-2012 |
20120080477 | SURGICAL INSTRUMENT HAVING A POWER CONTROL CIRCUIT - Various embodiments are directed to a powered surgical instrument for cutting and fastening tissue. The instrument may comprise an end effector comprising a first jaw member and a second jaw member. The second jaw member may be coupled to move relative to the first jaw member from an open position, where the jaw members are apart from one another, to a closed position. The end effector may also comprise a firing bar positioned to fire by translating within the end effector when the first and second jaw members are in the closed position. Additionally, the surgical instrument may comprise a drive device, a clamping trigger and a control circuit. The drive device may be mechanically coupled to the firing bar. The clamping trigger may be mechanically coupled to the end effector such that actuation of the clamping trigger causes the second jaw member to pivot towards the first jaw member. The control circuit may comprise a firing switch, a clamp switch, a latching device and an end-of-stroke sensor. The firing switch may be configured to be in electrical communication with a power supply for powering the drive device and in electrical communication with the drive device. The clamp switch may be in mechanical communication with the clamping trigger. The latching device may be in electrical communication with the clamp switch, the power supply and the drive device. The end-of-stroke switch may be in electrical communication with the latching device. Additionally, the firing switch may be electrically connected to, upon actuation, connect the power supply to the drive device via a first connection comprising the latching device and the firing switch. Further, the end-of-stroke switch may be electrically connected to, upon sensing an end of a stroke of the firing bar, cause a change in a state of the latching device to break the first connection between the power supply and the drive device. | 04-05-2012 |
20120080480 | FASTENER SYSTEM COMPRISING A PLURALITY OF CONNECTED RETENTION MATRIX ELEMENTS - A surgical fastener system can comprise a plurality of fasteners which can be connected to each other by a flexible retention matrix which is assembled to the fasteners in order to capture tissue therebetween. The flexible retention matrix can comprise, one, a plurality of retention matrix elements configured to engage the fasteners and, two, a lattice of connectors which connect one or more retention matrix elements. | 04-05-2012 |
20120080485 | FASTENING INSTRUMENT FOR DEPLOYING A FASTENER SYSTEM COMPRISING A RETENTION MATRIX - A surgical stapling instrument can comprise, one, a handle comprising an actuator and, two, an end effector comprising a proximal end, a distal end, and a longitudinal axis extending between the proximal end and the distal end. The end effector can further comprise a first jaw configured to support staples comprising staple legs and, in addition, a second jaw supporting a matrix element opposite the staples, wherein one of the jaws is movable toward the other in order to engage the matrix element with the staple legs. The stapling instrument can further comprise a cam operably coupled with the actuator, wherein the cam is movable along the longitudinal axis to deform the staple legs. | 04-05-2012 |
20120080486 | FASTENER SYSTEM COMPRISING A PLURALITY OF FASTENER CARTRIDGES - A surgical fastening instrument can comprise a handle and an end effector, wherein the end effector can comprise a first jaw comprising a first cartridge attachment portion and a second jaw comprising a second cartridge attachment portion, and wherein one of the first jaw and the second jaw is movable relative to the other of the first jaw and the second jaw. The surgical fastening instrument can further comprise a first cartridge that is insertable into the first jaw and attachable to the first cartridge attachment portion and, in addition, a second cartridge that is insertable into the second jaw and attachable to the second cartridge attachment portion. In various embodiments, the first cartridge can comprise first fastener portions which are engageable with second fastener portions in the second cartridge. | 04-05-2012 |
20120080487 | FASTENER SYSTEM COMPRISING A RETENTION MATRIX AND A COVER - A surgical fastening system can comprise a plurality of fasteners, wherein each fastener can comprise, one, a base and, two, a leg extending from the base, wherein each leg can comprise a tip. The fastener system can further comprise a retention matrix comprising a first side facing toward the bases of the fasteners, a second side facing away from the bases of the fasteners, and a plurality of retention members configured to engage the legs. The fastener system can further comprise a cover configured to cover the staple tips, wherein the cover can comprise a sheet of material and/or a plurality of caps. | 04-05-2012 |
20120080503 | FASTENER SYSTEM COMPRISING A RETENTION MATRIX AND AN ALIGNMENT MATRIX - A surgical fastener system can comprise a plurality of fasteners which can be connected to each other by, one, a retention matrix which is assembled to the fasteners in order to capture tissue within the fasteners and, two, an alignment matrix configured to hold the fasteners together before the retention matrix is assembled thereto. In various embodiments, the retention matrix and the alignment matrix can each comprise a tissue-contacting surface configured to compress tissue therebetween. | 04-05-2012 |
20120123471 | NEEDLE FOR LAPAROSCOPIC SUTURING INSTRUMENT - A surgical needle includes a pair of ends, a mid-region extending between the ends, and at least one grasping feature configured for grasping by a suturing instrument. An end of a suture is secured to the mid-region of the needle in a manner such that the end of the suture defines an oblique angle with at least part of the centerline defined by the mid-region of the needle. The end of the suture may be disposed in a hollow portion of the needle. The grasping feature may include a notch such as a scallop. The suture may be pivotally coupled with the needle via a ball or pin. The needle may have one or more sharp points. The sharp point may include three converging cutting edges, at least two planar surfaces bounded by the three cutting edges, and a rounded surface bounded by two of the three cutting edges. | 05-17-2012 |
20130184718 | POWERED SURGICAL CUTTING AND STAPLING APPARATUS WITH MANUALLY RETRACTABLE FIRING SYSTEM - In one general aspect, various embodiments of the present invention can include a motorized surgical cutting and fastening instrument having a drive shaft, a motor selectively engageable with the drive shaft, and a manual return mechanism configured to operably disengage the motor from the drive shaft and retract the drive shaft. In at least one embodiment, a surgeon, or other operator of the surgical instrument, can utilize the manual return mechanism to retract the drive shaft after it has been advanced, especially when the motor, or a power source supplying the motor, has failed or is otherwise unable to provide a force sufficient to retract the drive shaft. | 07-18-2013 |
20130248576 | MOTOR DRIVEN SURGICAL FASTENER DEVICE WITH CUTTING MEMBER REVERSING MECHANISM - A surgical fastener apparatus including a handle, an elongated shaft having a proximal end attached to the handle and a distal end extending therefrom. An end effector comprising a pair of jaws pivoted at a proximal end thereof and movable between an open and closed position, and a cartridge containing a plurality of surgical fasteners, the cartridge attached to the end effector. An electrically powered actuator for deploying the surgical fasteners. An electrically activated reverse mechanism for moving the elongated member from a distal most position within the end effector to a proximal position, the electrically activated reverse mechanism moves the elongated member proximally after the elongated member has moved to the distal most position by moving the trigger to the open position, and wherein after activation of the reverse mechanism proximal movement of the elongated member can be stopped by returning the trigger to its closed position. | 09-26-2013 |
20130324981 | SURGICAL INSTRUMENT BATTERY COMPRISING A PLURALITY OF CELLS - Various embodiments are directed to battery packs for use with surgical instruments. The battery packs may comprise a plurality of cells and at least a portion of the plurality of cells may not be electrically connected to one another. The battery packs may comprise a switch or other mechanism for interconnecting the plurality of cells and may also comprise, or be used in conjunction with, a discharge switch or plug configured to electrically connect an anode of the battery pack to a cathode of the battery pack, for example, via a resistive element. | 12-05-2013 |
20130324982 | ORIENTABLE BATTERY FOR A SURGICAL INSTRUMENT - Various embodiments are directed to battery packs for use with surgical instruments. The battery packs may comprise a plurality of cells and at least a portion of the plurality of cells may not be electrically connected to one another. The battery packs may comprise a switch or other mechanism for interconnecting the plurality of cells and may also comprise, or be used in conjunction with, a discharge switch or plug configured to electrically connect an anode of the battery pack to a cathode of the battery pack, for example, via a resistive element. | 12-05-2013 |
20140128850 | POWER CONTROL ARRANGEMENTS FOR SURGICAL INSTRUMENTS AND BATTERIES - Various embodiments are directed to battery unit for use with surgical instruments. The battery units may comprise a plurality of cells and include a translatable discharge drain. When attached to the surgical instrument, the discharge drain may electrically connect an anode of the battery unit to a cathode of the battery unit, for example, via a resistive element in order to drain the battery unit. | 05-08-2014 |
20140236184 | SURGICAL INSTRUMENT HAVING A POWER CONTROL CIRCUIT - Various embodiments are directed to a powered surgical instrument for cutting and fastening tissue. The instrument may comprise an end effector comprising a first jaw member and a second jaw member. The second jaw member may be coupled to move relative to the first jaw member from an open position, where the jaw members are apart from one another, to a closed position. The end effector may also comprise a firing bar positioned to fire by translating within the end effector when the first and second jaw members are in the closed position. Additionally, the surgical instrument may comprise a drive device, a clamping trigger and a control circuit. The drive device may be mechanically coupled to the firing bar. The clamping trigger may be mechanically coupled to the end effector such that actuation of the clamping trigger causes the second jaw member to pivot towards the first jaw member. The control circuit may comprise a firing switch, a clamp switch, a latching device and an end-of-stroke sensor. The firing switch may be configured to be in electrical communication with a power supply for powering the drive device and in electrical communication with the drive device. The clamp switch may be in mechanical communication with the clamping trigger. The latching device may be in electrical communication with the clamp switch, the power supply and the drive device. The end-of-stroke switch may be in electrical communication with the latching device. Additionally, the firing switch may be electrically connected to, upon actuation, connect the power supply to the drive device via a first connection comprising the latching device and the firing switch. Further, the end-of-stroke switch may be electrically connected to, upon sensing an end of a stroke of the firing bar, cause a change in a state of the latching device to break the first connection between the power supply and the drive device. | 08-21-2014 |
20140336529 | MRI COMPATIBLE BIOPSY DEVICE WITH DETACHABLE PROBE - A biopsy device comprises a probe assembly and an obturator. The probe assembly comprises a cannula having a closed distal end configured to penetrate tissue, an open proximal end, a first lumen in fluid communication with the open proximal end, and a side aperture located proximal to the closed distal end. The side aperture is in fluid communication with the first lumen. The obturator is removably insertable in the first lumen through the open proximal end. The obturator is configured to substantially block the side aperture when the obturator is inserted in the first lumen. The probe assembly may be inserted in a patient's tissue (e.g., breast) with the obturator disposed in the cannula to block the side aperture. The obturator may then be removed, and a cutter may be advanced through the cannula to sever tissue protruding through the side aperture. | 11-13-2014 |
20140367447 | FASTENER SYSTEM COMPRISING A RETENTION MATRIX AND AN ALIGNMENT MATRIX - A surgical fastener system can comprise a plurality of fasteners which can be connected to each other by, one, a retention matrix which is assembled to the fasteners in order to capture tissue within the fasteners and, two, an alignment matrix configured to hold the fasteners together before the retention matrix is assembled thereto. In various embodiments, the retention matrix and the alignment matrix can each comprise a tissue-contacting surface configured to compress tissue therebetween. | 12-18-2014 |
20150083772 | SURGICAL STAPLER WITH ROTARY CAM DRIVE AND RETURN - A surgical circular stapler has a body, shaft, a stapling assembly, a motor, a cam assembly, and a firing assembly. The shaft extends distally from the body. The stapling assembly is secured to a distal end of the shaft. Longitudinal translation of the firing assembly causes the stapling assembly to drive a plurality of staples in a circular array to secure two lumens of tissue together. The stapling assembly may further drive a blade to sever any excess tissue interior of the circular array of staples. The motor is operable to rotate the cam assembly. Rotation of the cam assembly causes longitudinal translation of the firing assembly. A single rotation of the cam assembly is operable to drive the firing assembly from a proximal position to a distal position and back to a proximal position. | 03-26-2015 |
20150083773 | SURGICAL STAPLING INSTRUMENT WITH DRIVE ASSEMBLY HAVING TOGGLE FEATURES - An apparatus includes an end effector, a shaft assembly including a translating drive member, and a drive assembly. The end effector includes a distally advancing cutting member and staple driver. The translating drive member is operable to actuate the end effector. The drive assembly is in communication with the translating drive member and includes a motor, a rotary drive member, a first link, and at least one toggle link. The rotary drive member is in communication with the motor. The first link is in communication with the rotary drive member. The at least one toggle link is in communication with the first link and the translating drive member. The rotary drive member is operable to convey linear motion to the first link. The first link is able to convey linear motion to the translating drive member. | 03-26-2015 |
20150083775 | SURGICAL STAPLER WITH ROTARY CAM DRIVE - A surgical circular stapler has a handle assembly, a shaft, a stapling assembly, a motor, a drive assembly, and a firing assembly. The shaft extends distally from the handle assembly. The stapling assembly is secured to a distal end of the shaft. Longitudinal translation of the firing assembly causes the stapling assembly to drive a plurality of staples in a circular array to secure two lumens of tissue together. The stapling assembly may further drive a blade to sever any excess tissue interior of the circular array of staples. The motor is operable to rotate the drive assembly to thereby translate the firing assembly. A resilient member biases the firing assembly proximally. Through cooperation between the firing assembly and the resilient member, the firing assembly is driven distally and proximally to complete a firing stroke in response to rotation of the drive assembly through a single revolution. | 03-26-2015 |