Actuator and detachable connector of flexible clip applier

• US 8,142,451 B2
• Filed: 01/26/2009
• Issued: 03/27/2012
• Est. Priority Date: 01/26/2009
• Status: Active Grant

• Current Assignee: Microline Surgical, Inc. (Hoya Corporation)
• Original Assignee: Microline Surgical, Inc. (Hoya Corporation)
• Inventors: Boulnois, Jean-Luc, Sato, Masayasu, Kawano, Tomohiro
• Primary Examiner(s): TYSON, MELANIE RUANO
• Application Number:
  US12/359,821
• Publication Number:
  US 20100191257A1
• Time in Patent Office: 1,156 Days
• Field of Search: 606139-143, 2271751-1821, 623/23.72
• US Class Current: 606/143
• CPC Class Codes: A61B 17/128 for applying or removing clamps or clips
• CPC Class Codes: A61B 17/1285 for minimally invasive surgery
• CPC Class Codes: A61B 2017/2905 flexible

Abstract

A clip applier for deploying a surgical clip includes an actuator having a flexible wire and a collet chuck coupled to a piston. Further, actuation of the piston in a forward direction towards a distal end of the clip applier advances the flexible wire in the forward direction.

Claims

1. A clip applier for deploying a surgical clip, the clip applier comprising:

an actuator configured to advance the surgical clip within the clip applier, the actuator comprising;

a flexible wire;

a collet chuck; and

a piston coupled to the collet chuck, the collet chuck receiving and clamping a proximal end of the flexible wire at an initial position, wherein actuation of the piston in a forward direction towards a distal end of the clip applier advances both the collet chuck and flexible wire in the forward direction, and

the collet chuck configured to release a clamping force applied to the end of the flexible wire so that the flexible wire remains positioned at an advanced position when the collet chuck returns in a rearward direction toward the initial position; and

a valve positioned intermediate a distal end of the flexible wire and the proximal end of the flexible wire, wherein the valve generally stationarily supports the flexible wire at the advanced position when the collet chuck releases the clamping force.

2. The clip applier according to claim 1, further comprising a collet chuck ring at a circumference of a distal end of the collet chuck, the collet chuck ring configured to apply a clamping force to the distal end of the collet chuck so as to clamp the proximal end of the flexible wire within the collet chuck.

3. The clip applier according to claim 2, further comprising a tube push configured to operate a distal end of the clip applier, wherein:

the collet chuck ring is positioned within a slit of the tube push;

the slit having a front end engagement surface; and

when the collet chuck is advanced in the forward direction, the collect chuck ring advances with the collect chuck until the collet chuck ring engages the front end engagement surface of the slit.

4. The clip applier according to claim 3, wherein the valve is positioned within the tube push and press-fitted within an opening of an inner coil pipe, and the inner coil pipe being rotatably coupled to a rotator provided at a proximal end of the clip applier.

5. The clip applier according to claim 4, wherein the valve is elastomeric.

6. The clip applier according to claim 3, the front end engagement surface of the slit comprising a abutment face which extends generally perpendicular to a linear direction of movement of the collet chuck.

7. The clip applier according to claim 3, wherein actuation of the actuator is configured to displace the collet chuck ring and the tube push in the forward direction, wherein an amount of the displacement of the collet chuck ring is greater than an amount of the displacement of the tube push such that the collet chuck ring engages the front end engagement surface of the slit.

8. The clip applier according to claim 3, further comprising a spacer positioned rearward of the collect chuck ring, wherein the collet chuck is configured to clamp the proximal end of the flexible wire when the collet chuck ring engages the spacer.

9. The clip applier according to claim 1, wherein the actuator further comprises a handle and a trigger.

10. The clip applier according to claim 9, wherein depression of the trigger actuates the piston in the forward direction.