IP Library › Granted Patent US 12,303,137
Granted Patent B2
US 12,303,137 · App. 18/504,498 · Granted May 20, 2025

Endoscopic surgical clip applier

Inventors: Roy J. Pilletere (Middletown, CT); Eric Brown (Madison, CT); Jacob C. Baril (Norwalk, CT); Gregory R. Morck (Haddam, CT); Saumya Banerjee (Southington, CT); Justin Thomas (New Haven, CT); Matthew A. Dinino (Newington, CT)
Assignee: Covidien LP
A61B17/1285
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Quick Facts
Patent No.
US 12,303,137
App. No.
18/504,498
Granted
May 20, 2025
Kind
B2
Abstract

A surgical clip applier includes a handle assembly, an elongated shaft, a drive shaft, a cam pin, and an end effector. The cam pin is disposed in mechanical cooperation with the drive shaft. The end effector is disposed adjacent a distal end of the elongated shaft and includes a first jaw member and a second jaw member. The end effector is disposed in operative engagement with the drive shaft such that longitudinal translation of the drive shaft relative to the housing of the handle assembly causes the first jaw member to move toward the second jaw member. The first jaw member includes a first cam slot configured to slidingly receive the cam pin. The first cam slot defines a first portion having a first slope and a second portion having second slope.

Claims (27)

1. A method of approximating jaw members of a surgical instrument, comprising:

moving a pin through a first portion of a first cam slot of a first jaw member to cause initial movement of the first jaw member relative to a second jaw member, the first portion of the first cam slot having a first slope relative to a longitudinal axis defined by the first jaw member; and

moving the pin through a second portion of the first cam slot of the first jaw member to cause additional movement of the first jaw member relative to the second jaw member, the second portion of the first cam slot having a second slope relative to the longitudinal axis, the second slope being different than the first slope.

2. The method according to claim 1 , wherein moving the pin through the first portion of the first cam slot occurs prior to moving the pin through the second portion of the first cam slot.

3. The method according to claim 1 , wherein moving the pin through the first portion of the first cam slot includes moving the pin distally relative to the first jaw member.

4. The method according to claim 3 , wherein moving the pin through the second portion of the first cam slot includes moving the pin distally relative to the first jaw member.

5. The method according to claim 4 , wherein moving the pin through the first portion of the first cam slot occurs prior to moving the pin through the second portion of the first cam slot.

6. The method according to claim 1 , wherein moving the pin through the first portion of the first cam slot of the first jaw member includes moving the pin a first distance, and moving the pin through the second portion of the first cam slot of the first jaw member includes moving the pin a second distance, the first distance being different than the second distance.

7. The method according to claim 6 , wherein the first distance is smaller than the second distance.

8. The method according to claim 7 , wherein the second slope of the first cam slot defines a steeper angle relative to the longitudinal axis than the first slope of the first cam slot.

9. The method according to claim 1 , wherein the second slope of the first cam slot defines a steeper angle relative to the longitudinal axis than the first slope of the first cam slot.

10. The method according to claim 1 , further including moving the pin through a first portion of a second cam slot of the second jaw member, and moving the pin through a second portion of the second cam slot of the second jaw member.

11. The method according to claim 10 , wherein moving the pin through the first portion of the first cam slot of the first jaw member occurs at the same time as moving the pin through the first portion of the second cam slot of the second jaw member.

12. The method according to claim 11 , wherein moving the pin through the second portion of the first cam slot of the first jaw member occurs at the same time as moving the pin through the second portion of the second cam slot of the second jaw member.

13. A method of compressing a surgical clip, the method comprising:

moving a pin through a first portion of a first cam slot of a first jaw member to cause a partial compression of a surgical clip positioned between the first jaw member and a second jaw member, the first portion of the first cam slot having a first slope relative to a longitudinal axis defined by the first jaw member; and

moving the pin through a second portion of the first cam slot of the first jaw member to cause a subsequent compression of the surgical clip positioned between the first jaw member and the second jaw member, the second portion of the first cam slot having a second slope relative to the longitudinal axis, the second slope being different than the first slope.

14. The method according to claim 13 , wherein moving the pin through the first portion of the first cam slot of the first jaw member includes moving the pin a first distance, and moving the pin through the second portion of the first cam slot of the first jaw member includes moving the pin a second distance, the first distance being different than the second distance.

15. The method according to claim 14 , further including moving the pin through a first portion of a second cam slot of the second jaw member, and moving the pin through a second portion of the second cam slot of the second jaw member.

16. The method according to claim 15 , wherein moving the pin through the first portion of the first cam slot of the first jaw member occurs at the same time as moving the pin through the first portion of the second cam slot of the second jaw member.

17. A jaw member of a surgical instrument, comprising:

an elongated portion defining a longitudinal axis; and

a cam slot disposed proximally of the elongated portion and configured to slidingly receive a cam pin, the cam slot defining a first portion having a first slope relative to the longitudinal axis and a second portion having a second slope relative to the longitudinal axis, the second slope being different than the first slope,

wherein distal movement of the cam pin along the first portion of the cam slot causes initial pivotal movement of the jaw member about a pivot pin, and distal movement of the cam pin along the second portion of the cam slot causes additional pivotal movement of the jaw member about the pivot pin.

18. The jaw member according to claim 17 , wherein the first portion of the cam slot defines a first distance, and the second portion of the cam slot defines a second distance, the first distance being smaller than the second distance.

19. The jaw member according to claim 18 , wherein the second slope of the cam slot defines a steeper angle relative to the longitudinal axis than the first slope of the cam slot.

20. The jaw member according to claim 17 , wherein the second slope of the cam slot defines a steeper angle relative to the longitudinal axis than the first slope of the cam slot.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 8, 2023
From: PILLETERE, ROY J.; BROWN, ERIC; BARIL, JACOB C.; MORCK, GREGORY R.; BANERJEE, SAUMYA; THOMAS, JUSTIN; DININO, MATTHEW A.
To: COVIDIEN LP
Reel/Frame 065497/0398 →
Continuity (4)
Continuation 17474673 · Sep 14, 2021
Continuation 16532551 · Aug 6, 2019
Provisional Application 62739421 · Oct 1, 2018
Related Publication 20240065704A1 · Feb 29, 2024
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