Blade deployment mechanisms for surgical forceps

Patent metadata

Field	Value
Publication number	US-2016106496-A1
Application number	US-201514978854-A
Country	US
Kind code	A1
Filing date	Dec 22, 2015
Priority date	Oct 1, 2010
Publication date	Apr 21, 2016
Grant date	—

Abstract

A forceps includes first and second shafts, each having a jaw member disposed at a distal end thereof. At least one jaw member is moveable from an open to a closed position for grasping tissue therebetween. At least one jaw member is configured for reciprocation of a blade therethrough. A trigger assembly includes a trigger and at least one linkage coupled to the trigger and to the blade such that rotation of the trigger translates the blade between the retracted and the extended position. An interference member moveable between a locked position and an unlocked position is also provided. The interference member is configured to engage the linkage(s) when in the locked position to inhibit translation of the blade from the retracted to the extended position.

First claim

1 - 20 . (canceled)

21 . A forceps, comprising:
a first shaft member having a jaw member at a distal end thereof; a second shaft member having a jaw member at a distal end thereof, the first and second shaft members pivotally coupled to each other about a pivot to move the jaw members between an open position and a closed position; a trigger disposed on one of the first or second shaft members; a blade operatively coupled to the trigger such that actuation of the trigger translates the blade; an actuator disposed within a recess formed in the first shaft member, the actuator configured to supply electrosurgical energy to at least one of the jaw members; and a tab extending from the second shaft member and configured to be received within the recess upon approximation of the first and second shaft members to depress the actuator.

22 . The forceps according to claim 21 , further comprising an interference member configured to prevent distal translation of the blade when the jaw members are in the open position.

23 . The forceps according to claim 22 , wherein one of the first or second shaft members is configured to move the interference member to permit distal translation of the blade when the jaw members are in the closed position.

24 . The forceps according to claim 21 , wherein each of the first and second shaft members includes a handle disposed at a proximal end thereof, each of the handles defining a finger hole to facilitate movement of the jaw members between the open and closed positions.

25 . The forceps according to claim 21 , wherein at least one of the jaw members includes a blade channel extending at least partially therethrough and configured to receive the blade upon distal translation of the blade.

26 . The forceps according to claim 21 , wherein at least one of the jaw members includes an electrically conductive sealing surface adapted to electrically connect to a source of electrosurgical energy.

27 . The forceps according to claim 21 , wherein depression of the actuator maintains a supply of electrosurgical energy to at least one of the jaw members for a fixed length of time.

28 . The forceps according to claim 21 , wherein depression of the actuator maintains a continuous supply of electrosurgical energy to at least one of the jaw members.

29 . The forceps according to claim 21 , wherein the actuator is an electrical toggle switch.

30 . The forceps according to claim 21 , wherein the recess is disposed proximal to the trigger.

31 . A forceps, comprising:
a first shaft member having a jaw member at a distal end thereof; a second shaft member having a jaw member at a distal end thereof, the first and second shaft members pivotally coupled to each other about a pivot to move the jaw members between an open position and a closed position; a trigger disposed on one of the first or second shaft members; a blade operatively coupled to the trigger such that actuation of the trigger translates the blade; an interference member configured to rotate between a locked position to prevent distal translation of the blade when the jaw members are in the open position and an unlocked position to permit distal translation of the blade when the jaw members are in the closed position; an actuator disposed within a recess formed in the first shaft member, the actuator configured to supply electrosurgical energy to at least one of the jaw members; and a tab extending from the second shaft member toward the first shaft member and configured to be received within the recess upon approximation of the first and second shaft members to depress the actuator.

32 . The forceps according to claim 30 , wherein one of the first or second shaft members is configured to rotate the interference member to the unlocked position to permit distal translation of the blade when the jaw members are in the closed position.

33 . The forceps according to claim 30 , wherein each of the first and second shaft members includes a handle disposed at a proximal end thereof, each of the handles defining a finger hole to facilitate movement of the jaw members between the open and closed positions.

34 . The forceps according to claim 30 , wherein at least one of the jaw members includes a blade channel extending at least partially therethrough and configured to receive the blade upon distal translation of the blade.

35 . The forceps according to claim 30 , wherein at least one of the jaw members includes an electrically conductive sealing surface adapted to electrically connect to a source of electrosurgical energy.

36 . The forceps according to claim 30 , wherein depression of the actuator maintains a supply of electrosurgical energy to at least one of the jaw members for a fixed length of time.

37 . The forceps according to claim 30 , wherein depression of the actuator maintains a continuous supply of electrosurgical energy to at least one of the jaw members.

38 . The forceps according to claim 30 , wherein the actuator is an electrical toggle switch.

39 . The forceps according to claim 30 , wherein the recess is disposed proximal to the trigger.

Assignees

• Covidien Lp

Inventors

• Artale Ryan C
• Meiser Thomas W
• Dickhans William J
• Butcher Steven E
• Butcher Dennis W

Classifications

• A61B18/1442

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

• A61B17/285 Primary

  combined with cutting implements · CPC title

• A61B17/2812

  with a single pivotal connection (A61B17/29 takes precedence) · CPC title

• A61B17/2833 Primary

  Locking means · CPC title

• A61B18/1445 Primary

  at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod · CPC title