Electrosurgical cutting and sealing instrument
First Claim
Patent Images
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; and
an 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.
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Abstract
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.
1374 Citations
19 Claims
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1. An electrosurgical instrument, comprising:
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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; and an 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An electrosurgical instrument, comprising:
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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; and an 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 axially moveable cutting member comprises a distal stop and a proximate stop, and wherein the tissue-cutting element is configured to cut tissue captured by the end effector; a trigger coupled to the axially moveable cutting member moveable between a first position, a second position, and a third position, wherein the trigger is moveable from the first position to the second position to advance the axially moveable cutting member to move the first jaw member to the closed position, and wherein the trigger is moveable from the second position to the third position 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 a nut, wherein the nut is coupled to the axially moveable cutting member intermediate the distal stop and the proximate stop, wherein the trigger is configured to manually advance the proximate stop towards the nut without the powered linear actuator as the trigger moves from the first position to the second position, and wherein the trigger is configured to advance the nut away from the proximate stop with the powered linear actuator as the trigger is moved from the second position to the third position. - View Dependent Claims (14, 15, 16, 17, 18)
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19. An electrosurgical instrument, comprising:
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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; and an 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; a trigger coupled to the axially moveable cutting member, wherein the trigger is moveable between a first position and a second position to advance the axially moveable cutting member to sequentially move the first jaw member to the closed position and cut tissue captured by the end effector; a motor coupled to the axially moveable cutting member; a load cell coupled to the axially moveable cutting member;
wherein the load cell is configured to output a load signal; andwherein the motor distally drives the axially moveable cutting member at a variable speed, wherein the variable speed is at least partially based on the load signal, wherein the trigger is configured to advance the axially moveable cutting member without the motor to move the first jaw member to the closed position, and wherein the trigger is configured to advance the axially moveable cutting member with the motor to cut the captured tissue.
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Specification