ENDOSCOPIC REPOSABLE SURGICAL CLIP APPLIER

• US 20180317927A1
• Filed: 11/10/2015
• Published: 11/08/2018
• Est. Priority Date: 11/10/2015
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Cai, Longsheng, Xu, Shunhong, Chen, Lin
• Granted Patent: US 10,702,280 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 17/1285 for minimally invasive surgery
• CPC Class Codes: A61B 2017/00407 Ratchet means
• CPC Class Codes: A61B 2017/00464 for use with different instruments with hole for different instruments A61B2017/22072
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 34/35 for telesurgery

Abstract

Endoscopic reposable surgical clip appliers including a reusable handle assembly and at least one reusable shaft assembly.

Claims

1. A handle assembly of a reposable surgical clip applier configured to releasably engage at least two different endoscopic clip-applying assemblies, the handle assembly comprising:

a housing;

a trigger pivotably connected to the housing and movable relative thereto between an un-actuated position and an actuated position;

a drive bar slidably supported within the housing and operably coupled to the trigger such that movement of the trigger from the un-actuated position towards the actuated position translates the drive bar distally through the housing, the drive bar including a ratchet rack disposed thereon;

a pawl pin supported within the housing and extending transversely relative to a longitudinal axis of the housing;

a ratchet pawl pivotably and slidably supported on the pawl pin, the ratchet pawl transversely slidable about the pawl pin between a use position, wherein the ratchet pawl is aligned relative to the ratchet rack to engage the ratchet rack upon distal translation of the drive bar, and a bypass position, wherein the ratchet pawl is offset relative to the ratchet rack to inhibit engagement therewith upon distal translation of the drive bar; and

a bypass assembly including a plunger slidably disposed within the housing and operably coupled to the ratchet pawl, the plunger movable between a first position and a second position for sliding the ratchet pawl between the use position and the bypass position.

2. The handle assembly according to claim 1, wherein the bypass assembly further includes a first cam component slidably engaged with the plunger and a second cam component slidably disposed on the ratchet pawl, wherein movement of the plunger from the first position to the second position urges the first cam component into the second cam component to thereby urge the second cam component to slide the ratchet pawl from the use position to the bypass position.

3. The handle assembly according to claim 2, wherein the first and second cam components are configured such that longitudinal translation of the plunger effects transverse sliding of the ratchet pawl.

4. The handle assembly according to claim 1, further including a first biasing member positioned to bias the ratchet pawl towards the use position.

5. The handle assembly according to claim 1, further including a second biasing member positioned to bias the plunger towards the first position.

6. The handle assembly according to claim 1, wherein the plunger includes a manual button extending from the housing, the manual button selectively depressible relative to the housing to move the plunger from the first position to the second position.

7. A reposable surgical clip applier, comprising:

a handle assembly including;

a receiver assembly configured to releasably engage an endoscopic clip-applying assembly therein, the receiver assembly including an outer collar and an inner tubular member; and

a rotation knob disposed about the receiver assembly, the rotation knob slidable relative to the inner tubular member and engaged to the outer collar such that sliding of the rotation knob relative to the inner tubular member between a proximal position and a distal position slides the outer collar relative to the inner tubular member between a proximal locked position and a distal unlocked position; and

an endoscopic clip-applying assembly insertable into the inner tubular member, wherein, with the endoscopic clip-applying assembly inserted into the inner tubular member, the rotation knob is slidable from the distal position to the proximal position to thereby slide the outer collar from the distal unlocked position to the proximal locked position to lock the endoscopic clip-applying assembly within the inner tubular member.

8. The reposable surgical clip applier according to claim 7, further including at least one ball bearing configured for insertion partially through a respective aperture defined within the inner tubular member, each ball bearing configured for receipt within a corresponding aperture defined within the endoscopic clip-applying assembly to lock the endoscopic clip-applying assembly within the inner tubular member.

9. The reposable surgical clip applier according to claim 8, wherein, in the proximal locked position of the outer collar, the outer collar urges the at least one ball bearing inwardly partially through the respective aperture of the inner tubular member and into engagement within the corresponding aperture defined within the endoscopic clip-applying assembly to lock the endoscopic clip-applying assembly within the inner tubular member.

10. The reposable surgical clip applier according to claim 7, wherein the inner tubular member defines a proximal aperture and a distal aperture and wherein the rotation knob includes a locking pin operably coupled thereto, the locking pin configured for engagement within the proximal aperture to lock the rotation knob in the proximal position and configured for engagement within the distal aperture to lock the rotation knob in the distal position.

11. The reposable surgical clip applier according to claim 10, wherein, in the absence of the endoscopic clip-applying assembly, the rotation knob is locked in the distal position with the locking pin engaged within the distal aperture.

12. The reposable surgical clip applier according to claim 11, wherein insertion of the endoscopic clip-applying assembly into the inner tubular member disengages the locking pin from the distal aperture to permit movement of the rotation knob to the proximal position.

13. The reposable surgical clip applier according to claim 12, further including a biasing member configured to bias the rotation knob towards the proximal position such that, upon disengagement of the locking pin from the distal aperture, the rotation knob is urged to the proximal position under the bias of the biasing member.