Surgical devices are provided having power-assisted or fully powered jaw closure. The devices herein generally include a handle portion, an elongate shaft, and an effector having first and second jaws configured to engage tissue. A motor and one or more compression springs can be operatively coupled, and activation of the motor can compress the spring(s) to reduce the amount of user supplied force to compress tissue between the jaws. In some embodiments, the devices can be configured to regulate an amount of compression applied by the jaws prior to, during, and/or after cutting of the tissue to promote hemostasis. For example, the devices can include sensors, processors, and/or other components that analyze data indicative of tissue type and tissue load. Based on this feedback, the device can automatically adjust the amount of compression or energy applied to the tissue to seal the tissue.

A vein harvesting device is disclosed. The vein harvesting device includes a handle assembly, at least one elongated portion, first and second end effectors, and a tip. Each end effector is disposed adjacent a distal portion of the at least one elongated portion. Each end effector includes a first jaw member and a second jaw member, and at least one jaw member is movable toward the other jaw member. The tip is disposed in mechanical cooperation with the elongated portion. A distal end of the tip extends distally beyond a distal-most end of the first end effector. The first end effector is movable independently of the tip, and the second end effector is movable independently of the tip.

Certain aspects relate to systems, devices and techniques for vessel sealing and cutting. In particular, an instrument is provided that is capable of performing multiple functions, including sealing and cutting. The instrument can be robotically controlled, and can include a shaft, a multi-DOF wrist, and an end effector. The end effector is capable of generating and delivering heat via different energy modalities to perform the various functions at different temperatures.

A vein harvesting device for harvesting a vein in a living body includes an elongated hollow member possessing a distal end portion and a proximal end portion, and a dissecting member at the distal end portion of the elongated hollow member and configured to dissect tissue in the body surrounding the vein during harvesting of the vein, wherein the dissecting member possessing a proximal end portion communicating with the elongated hollow member. The dissecting member possesses two side portions, with each of the side portions possessing a first end at an end of the side portion farther from the hollow member and a second end at an end of the side portion closer to the hollow member. A projection projects from the first end at each of the side portions of the dissecting member to contact the tissue in the body surrounding the vein during the harvesting of the vein.

A vein harvesting device is disclosed. The vein harvesting device includes a handle assembly, at least one elongated portion, first and second end effectors, and a tip. Each end effector is disposed adjacent a distal portion of the at least one elongated portion. Each end effector includes a first jaw member and a second jaw member, and at least one jaw member is movable toward the other jaw member. The tip is disposed in mechanical cooperation with the elongated portion. A distal end of the tip extends distally beyond a distal-most end of the first end effector. The first end effector is movable independently of the tip, and the second end effector is movable independently of the tip.

A surgical instrument includes a hollow member having a sidewall provided with a window and a closure member movably connected to the hollow member for alternately covering and uncovering the window. The hollow member has a first clamping surface along an edge of the window, while the closure member has a second clamping surface opposing the first clamping surface and disposable substantially adjacent thereto in a clamping or closure configuration of the instrument. The instrument additionally comprises a tissue occlusion component mounted to at least one of the hollow member and the closure member for acting on tissues gripped between the first clamping surface and the second clamping surface, to couple the tissues to each other.

A surgical instrument includes an end effector assembly and a deployment mechanism for deploying a proximal hub associated with an energizable member between proximal and distal positions. The deployment mechanism includes a rotatable shaft, a cord including a proximal end engaged to the rotatable shaft and a distal end engaged to the proximal hub, a biasing member positioned to bias the proximal hub towards the distal position, and a gear assembly operably coupled to the rotatable shaft. The gear assembly is configured to move the proximal hub from the distal position to the proximal position against the bias of the biasing member by rotating the rotatable shaft relative to the cord to at least partially wind-up the cord about the rotatable shaft.

A vein harvesting device is disclosed. The vein harvesting device includes a handle assembly, an elongated portion extending distally from the handle assembly and defining a longitudinal axis, an end effector, and a retractor. The end effector is disposed adjacent a distal portion of the elongated portion, and includes a first jaw member and a second jaw member. At least one jaw member is movable toward the other jaw member. The retractor is disposed in mechanical cooperation with the elongated portion, and includes a shaft and a pair of legs. The retractor is movable from a non-deployed position where the shaft is aligned with the longitudinal axis, to a deployed position where the shaft is disposed at an angle with respect to the longitudinal axis.

An endoscopic vessel harvester cuts and cauterizes side branches from a target vessel using a cutter member that extends at a distal end of an insertion member. The cutter member has a plate defining a slit for receiving a side branch. A cutting electrode is disposed at a base of the slit and a pair of grounding electrodes are each mounted to an outer surface of the plate on opposite sides of the slit. Each grounding electrode has a raised longitudinal ridge adjoining a portion of the slit including the base of the slit and has a spot cautery wing extending laterally away from the slit with a surface configured to engage a surface of the tunnel. The longitudinal ridges each have an upright jamb surface configured to contact the side branch remotely from the cutting electrode so that it is unnecessary to make a grounding contact on the tunnel.

A vein harvesting assembly for harvesting a vein in a body comprises: a dissecting member, with the dissecting member being insertable into the body and moved along a vein to dissect tissue surrounding the vein. A covering member possesses a proximal end portion and a distal end portion, with the covering member possessing a covered space extending from the proximal end portion to the distal end portion, and the covering member being mountable on and movable along the dissecting member when the dissecting member is positioned in a living body. A cutting member is comprised of an elongated member and a blade member so that rotation of the elongated member results in turning of the cutting member to cut tissue surrounding the vein. The cutting member is insertable into the space in the covering member and is movable in a distal direction along the space.