Electrosurgical cutting and sealing instrument

摘要

A surgical instrument for supplying energy to tissue can comprise a jaw member comprising an electrode, wherein the electrode is configured to supply energy from a power source to captured tissue. The surgical instrument comprises a tissue-cutting element to transect the captured tissue. The rate of distal translation of the tissue-cutting element during the operational stroke may be regulated by a linear actuator, for example.

主权项

1. An electrosurgical instrument, comprising:
a handle; an elongate shaft extending distally from the handle; an end effector coupled to a distal end of the elongate shaft, comprising:
a first jaw member;a second jaw member, wherein the first jaw member is moveable relative to the second jaw member between an open and a closed position;a tissue-cutting element configured to translate with respect to the first jaw member and the second jaw member; andan electrode; an axially moveable cutting member configured to move the first jaw member to the closed position, the tissue-cutting element positioned at a distal end of the axially moveable cutting member, wherein the tissue-cutting element is configured to cut tissue captured by the end effector; a trigger coupled to the axially moveable cutting member, wherein the trigger is moveable through a first range of motion to advance the axially moveable cutting member to move the first jaw member to the closed position, and wherein the trigger is moveable through a second range of motion to advance the axially moveable cutting member to translate the tissue-cutting element to cut the captured tissue; and a powered linear actuator coupled to the axially moveable cutting member, wherein the axially moveable cutting member is manually advanced without the powered linear actuator to move the first jaw member to the closed position during the first range of motion of the trigger, and wherein the axially moveable cutting member is advanced with the powered linear actuator to translate the tissue-cutting element to cut the captured tissue during the second range of motion of the trigger.