A surgical instrument includes a housing, an elongated shaft extending distally from the housing, an end effector assembly, and a trigger assembly. The trigger assembly is disposed in mechanical cooperation with the housing and is configured to longitudinally translate a drive member. The trigger assembly includes a trigger, a gear assembly, a spool, a slider, and a flexible drive member. The trigger is disposed in mechanical cooperation with the gear assembly. The flexible drive member is configured to engage the gear assembly, the spool, and the slider. Movement of the trigger with respect to the housing results in movement of the flexible drive member with respect to the housing and longitudinal movement of the slider with respect to the housing.

Surgical devices and methods are provided that utilize an end effector biased to a closed position when an actuator of the device is biased in an uncompressed configuration. End effectors according to the present disclosure can include first and second jaws that can be moved from the biased closed position to an open position by compressing the actuator from the uncompressed configuration and towards a compressed configuration. Various force assemblies and related components are provided that allow the device to achieve two end effector actuation profiles: (1) moving from a closed position and to an open position; and (2) moving from a closed position, to an open position, and back to the closed position. Various structures and methods for operating such devices during a surgical procedure are also provided.

A surgical instrument assembly comprising an end effector, a shaft assembly, a closure drive system, and a firing drive system is disclosed. The surgical instrument assembly further comprises a dual lock configured to engage a closure member and a firing member to prevent the firing member from being advanced distally from a proximal firing stroke position before the closure member is in a distal closure stroke position. The dual lock is further configured to prevent the closure member from being retracted from the distal closure stroke position before the firing member is returned to the proximal firing stroke position after the firing stroke.

Methods for treating tissue, and surgical assemblies and related methods are disclosed in which a single input is used to sequentially articulate two members. A medical device includes an input link movable through an input link range of motion, a jaw coupled with the input link, and a tissue manipulation member coupled to the input link and positioned to manipulate a tissue gripped by the jaw. The input link range of motion includes a first portion and a second portion. The input link within the first portion of the input link range of motion drives the jaw through a jaw range of motion. The input link within the second portion of the input link range of motion drives the tissue manipulation member through a tissue manipulation member range of motion.

A medical device comprises a housing and a sheath having opposed proximal and distal ends and being attached from the proximal end to the housing. An end effector is attached to the distal end portion of the sheath. The end effector includes a pair of grasping jaws capable of be openable and closable with respect to one another. A movable shaft includes a distal end that being connected at to the end effector and configured to be movable with respect to the sheath so as to cause the paired grasping jaws to be opened or closed with respect to one another. A movable handle is configured to pivot with respect to the housing and having an input position where an operation is inputted so as to cause the handle to pivot. The movable shaft is changeable in an initial state before the operation is inputted at the input position.

An adaptor for a powered surgical instrument includes a casing, a cam drum, a first linear driver, and a second linear driver. The cam drum defines and is translatable along a longitudinal axis of the adaptor between a retracted position and an advanced position. The cam drum is being supported for rotation about the longitudinal axis. The cam drum defines first and second radial cam grooves about an outer surface thereof. The first cam groove defines a first profile and the second cam groove defines a second profile. The first linear driver includes a first cam follower disposed in the first cam groove and the second linear driver includes a second cam follower disposed in the second cam groove. The first and second linear drivers are supported for movement between advanced and retracted positions in response to rotation of the cam drum.

A retrieval device attachable to a scope includes a handle which has an attachment portion configured to couple the handle to the scope; a shaft coupled to the handle having a wire immovably coupled to the handle; and a sheath movable relative to the handle over the wire between a distal position and a proximal position via an actuator of the handle. The actuator actuates a slider assembly of the handle. The slider assembly is coupled to the sheath and movable relative to the attachment portion to move the sheath and an expandable end effector coupled to the distal end of the wire. The end effector is movable between a collapsed configuration when the sheath is moved distally to the distal position to cover the end effector and an expanded configuration when the sheath is moved proximally to the proximal position, uncovering the end effector.

An elongate shaft assembly for use with a stitching device includes a hub assembly and an end effector. The hub assembly includes insertion and engaging portions. The insertion portion includes a main rod, a rotatable hub operatively coupled with the main rod such that axial displacement of the main rod rotates the rotatable hub, and first and second arms operatively coupled with the rotatable hub such that rotation of the rotatable hub causes reciprocating axial displacement of the first and second arms. The engaging portion is movable relative to the insertion portion between a reload position in which the rotatable hub is in a distal-most position and rotatable independent of axial displacement of the main rod, and a loaded position in which axial displacement of the main rod rotates the rotatable hub.

A manipulator adapted to grasp and draw tissue comprises first and second arms having proximal ends and distal ends separated by a distance. First and second grasping surfaces each connected to and extending from respective distal ends of the first and second arms are biased toward each other by a respective spring force. When the first and second arms are actuated to reduce the distance, the manipulator is configured such that tissue arranged between the first and second grasping surfaces resist actuation of the first and second arms. The first and second arms are further actuatable to overcome the spring force of the first and second grasping surfaces so that the first and second grasping surfaces pivot at respective pivot points such that the distance between the distal ends of the first and second arms is reduced.

A surgical instrument is disclosed which comprises a staple firing system and a tissue cutting system. The surgical instrument is configured to permit a surgeon to elect whether to actuate the tissue cutting system after the staple firing system has been actuated.