Vessel sealing instrument

Patent metadata

Field	Value
Publication number	US-2018042666-A1
Application number	US-201715791552-A
Country	US
Kind code	A1
Filing date	Oct 24, 2017
Priority date	Oct 4, 2010
Publication date	Feb 15, 2018
Grant date	—

Abstract

A bipolar electrosurgical instrument includes first and second shafts each having a jaw member extending from its distal end. Each jaw member is adapted to connect to a source of electrosurgical energy such that the jaw members are capable of selectively conducting energy through tissue held therebetween. A knife channel is configured to reciprocate a cutting mechanism therealong. An actuator selectively advances the cutting mechanism. A switch is disposed on the first shaft and is configured to be depressed between a first position and at least one subsequent position upon biasing engagement with a mechanical interface disposed on the second shaft. The first position of the switch relays information to the user corresponding to a desired pressure on tissue and the at least one subsequent position is configured to activate the source of electrosurgical energy to supply electrosurgical energy to the jaw members.

First claim

1 - 16 . (canceled)

17 . An electrosurgical forceps, comprising:
a first shaft pivotably coupled to a second shaft, each of the first and second shafts having a jaw member disposed at a distal end thereof, the first and second shafts movable relative to each other to move the jaw members between an open position and a closed position; a knife configured to cut tissue disposed between the jaw members; a trigger extending from the first shaft and rotatable to translate the knife longitudinally through the jaw members; and an anti-deployment link disposed within the first shaft adjacent the trigger, the anti-deployment link configured to engage the trigger to prevent rotation of the trigger when the jaw members are in the open position.

18 . The electrosurgical forceps according to claim 17 , further comprising a switch actuatable via movement of the first and second shafts relative to each other and configured to control delivery of electrosurgical energy to each of the jaw members.

19 . The electrosurgical forceps according to claim 17 , further comprising a stop member disposed on at least one of the jaw members and configured to control a distance between the jaw members.

20 . An electrosurgical forceps, comprising:
a first shaft pivotably coupled to a second shaft, each of the first and second shafts having a jaw member disposed at a distal end thereof, the first and second shafts movable relative to each other to move the jaw members between an open position and a closed position; a knife configured to cut tissue disposed between the jaw members; a trigger extending from the first shaft and rotatable to translate the knife longitudinally through the jaw members; an anti-deployment link disposed within the first shaft and configured to engage the trigger to prevent rotation of the trigger when the jaw members are in the open position; and a switch actuatable via movement of the first and second shafts relative to each other and configured to control delivery of electrosurgical energy to each of the jaw members.

21 . The electrosurgical forceps according to claim 20 , further comprising a stop member disposed on at least one of the jaw members and configured to control a distance between the jaw members.

22 . The electrosurgical forceps according to claim 20 , wherein movement of the jaw members to the closed position moves the anti-deployment link out of engagement with the trigger to permit rotation of the trigger.

23 . The electrosurgical forceps according to claim 20 , further comprising a first lead channel defined in the jaw member of the first shaft and a second lead channel defined in the jaw member of the second shaft, the first lead channel having a proximal end that is continuous with an elongated raceway defined in the jaw member of the first shaft.

24 . The electrosurgical forceps according to claim 23 , further comprising:
a first electrical lead routed through a narrowed portion of the elongated raceway and through the first lead channel; and a second electrical lead routed at least partially through the elongated raceway and extending from the elongated raceway toward the jaw member of the second shaft.

25 . The electrosurgical forceps according to claim 20 , wherein the anti-deployment link is disposed within the first shaft adjacent the trigger.

26 . An electrosurgical forceps, comprising:
a first shaft pivotably coupled to a second shaft, each of the first and second shafts having a jaw member disposed at a distal end thereof, the first and second shafts movable relative to each other to move the jaw members between an open position and a closed position; a knife configured to cut tissue disposed between the jaw members; a trigger extending from the first shaft and rotatable to translate the knife longitudinally through the jaw members; and an anti-deployment link disposed within the first shaft and configured to engage the trigger to prevent rotation of the trigger when the jaw members are in the open position.

27 . The electrosurgical forceps according to claim 26 , further comprising a switch actuatable via movement of the first and second shafts relative to each other and configured to control delivery of electrosurgical energy to each of the jaw members.

28 . The electrosurgical forceps according to claim 26 , further comprising a stop member disposed on at least one of the jaw members and configured to control a distance between the jaw members.

29 . The electrosurgical forceps according to claim 26 , wherein movement of the jaw members to the closed position moves the anti-deployment link out of engagement with the trigger to permit rotation of the trigger.

30 . The electrosurgical forceps according to claim 26 , further comprising a first lead channel defined in the jaw member of the first shaft and a second lead channel defined in the jaw member of the second shaft, the first lead channel having a proximal end that is continuous with an elongated raceway defined in the jaw member of the first shaft.

31 . The electrosurgical forceps according to claim 30 , further comprising:
a first electrical lead routed through a narrowed portion of the elongated raceway and through the first lead channel; and a second electrical lead routed at least partially through the elongated raceway and extending from the elongated raceway toward the jaw member of the second shaft.

32 . The electrosurgical forceps according to claim 26 , wherein the anti-deployment link is disposed within the first shaft adjacent the trigger.

Assignees

• Covidien Lp

Inventors

• Artale Ryan C
• Roy Jeffrey M
• Moua Tony
• Butcher Dennis W
• Dickhans William J
• Joseph Daniel A
• Waaler Luke
• Perry Cynthia M
• Collins Long Meghan

Classifications

• A61B2018/1455

  having a moving blade for cutting tissue grasped by the jaws · CPC title

• A61B18/1442 Primary

  Probes having pivoting end effectors, e.g. forceps · CPC title

• A61B2018/00601

  Cutting · CPC title

• A61B2090/065

  for measuring contact or contact pressure · CPC title

• A61B2018/0063

  Sealing · CPC title