IP Library › Granted Patent US 12678217
Granted Patent B2
US 12678217 · App. 18/596,378 · Granted Jul 14, 2026

Forceps including a double biased handle latch

Inventors: John Mensch (Plymouth, MN); Riyad Moe (Madison, WI); Kester Julian Batchelor (Mound, MN)
Assignee: Gyrus ACMI, Inc.
A61B18/1447A61B2017/2925A61B2017/2946A61B2018/1455A61B2018/1462
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Quick Facts
Patent No.
US 12678217
App. No.
18/596,378
Granted
Jul 14, 2026
Kind
B2
Abstract

A surgical device comprising: a closure assembly including: (a) a movement unit configured to be connected to a movable member, the movement unit including: (i) one or more bars; (ii) one or more bar biasing members in communication with the movement unit and moving the one or more bars; (b) a latch unit configured to be connected to a ground member, the latch unit including: (i) one or more hook latches that selectively receive the one or more bars, and (ii) one or more latch biasing members in communication with the one or more hook latches to selectively move the one or more hook latches; wherein all or a portion of the latch unit is movable relative to the ground member and all or a portion of the movement unit is movable relative to the movable member, and the latch unit and the movement unit are movable relative to each other when the latch unit and the movement unit are in contact.

Claims (48)

1 . A closure assembly for a surgical device, comprising:

a movement unit configured to be connected to a movable member configured to move relative to a ground member, the movement unit including:

a bar arm configured to extend from the movable member when the movement unit is connected to the movable member;

a bar connected to and extending from the bar arm; and

a bar biasing member in communication with the movement unit and in communication with the bar arm such that the bar biasing member is configured to move the bar arm and the bar relative to the movable member; and

a latch unit configured to be connected to the ground member, the latch unit including:

a window;

a hook latch configured to selectively receive the bar, the hook latch slidably engageable with the window; and

a latch biasing member in communication with the hook latch to selectively move the hook latch along at least a portion of the window;

wherein the bar is movable relative to the hook latch between a home position where the bar is spaced apart from the hook latch and a locked position where the bar contacts a locking feature of the hook latch;

wherein the bar biasing member is in a zero bias state when the bar is in the home position; and

wherein the latch unit and the movement unit are movable relative to each other when the latch unit and the movement unit are in contact.

2 . The closure assembly of claim 1 , wherein the locking feature comprises a pocket.

3 . The closure assembly of claim 1 , wherein the latch biasing member is in a zero bias state when the bar is in the home position.

4 . The closure assembly of claim 1 , wherein actuating the movable member a first time moves the bar from the home position to the locked position.

5 . The closure assembly of claim 4 , wherein actuating the movable member a second time moves the bar from the locked position back to the home position.

6 . A closure assembly, comprising:

a movement unit including a bar and a bar biasing member, the movement unit configured to be operably coupled to a movable member such that the movable member is configured to move relative to a ground member to move the bar between a home position and a locked position, the bar biasing member configured to move the bar relative to the movable member, and the bar biasing member locatable at least partially within the movable member; and

a latch unit configured to be operably coupled to the ground member, the latch unit including:

a latch configured to be spaced apart from the bar when the bar is in the home position, the latch configured to selectively receive the bar when the bar is moved to the locked position;

a window configured to receive at least a portion of the latch; and

a latch biasing member, the latch biasing member locatable at least partially within the ground member, the latch biasing member in communication with the latch to selectively move the latch along at least a portion of the window;

wherein the latch unit and the movement unit are movable relative to each other when the latch unit and the movement unit are in contact.

7 . The closure assembly of claim 6 , wherein the movable member comprises a trigger.

8 . The closure assembly of claim 7 , wherein the trigger is a lever configured to turn on a pivot.

9 . A closure assembly for a surgical device, comprising:

a movement unit configured to be connected to a movable member configured to move relative to a ground member, the movement unit including:

a bar arm configured to extend from the movable member when the movement unit is connected to the movable member;

a bar connected to and extending from the bar arm; and

a bar biasing member in communication with the movement unit and in communication with the bar arm such that the bar biasing member is configured to move the bar arm and the bar relative to the movable member; and

a latch unit configured to be connected to the ground member, the latch unit including:

a window;

a hook latch configured to selectively receive the bar, the hook latch slidably engageable with the window; and

a latch biasing member in communication with the hook latch to selectively move the hook latch along at least a portion of the window;

wherein the bar is movable relative to the hook latch between a home position where the bar is spaced apart from the hook latch and a locked position where the bar contacts a locking feature of the hook latch;

wherein actuating the movable member a first time moves the bar from the home position to the locked position; and

wherein the latch unit and the movement unit are movable relative to each other when the latch unit and the movement unit are in contact.

10 . The closure assembly of claim 9 , wherein the movable member moves along a prescribed motion.

11 . The closure assembly of claim 9 , wherein the bar biasing member is in a zero bias state when the bar is in the home position.

12 . The closure assembly of claim 11 , wherein the latch biasing member is in a zero bias state when the hook latch is in a latch home position.

13 . The closure assembly of claim 9 , wherein the bar is movable relative to the hook latch between the home position and at least one contact position where the bar contacts the hook latch.

14 . The closure assembly of claim 13 , wherein the at least one contact position comprises a plurality of contact positions.

15 . The closure assembly of claim 9 , wherein the locking feature comprises a pocket configured to receive the bar so that a locked state is formed.

16 . The closure assembly of claim 15 , wherein the pocket comprises a recess.

17 . The closure assembly of claim 15 , wherein the hook latch includes an entry apex configured to assist the bar in entering the pocket.

18 . The closure assembly of claim 17 , wherein the hook latch includes an exit apex configured to prevent the bar from inadvertently exiting the pocket.

19 . The closure assembly of claim 18 , wherein the entry apex and the exit apex are located on opposing sides of the pocket.

20 . The closure assembly of claim 9 , wherein the movable member comprises a trigger.