ENDOSCOPIC REPOSABLE SURGICAL CLIP APPLIER

• US 20190046208A1
• Filed: 07/10/2018
• Published: 02/14/2019
• Est. Priority Date: 08/09/2017
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Baril, Jacob C., Dinino, Matthew A.
• Granted Patent: US 10,786,262 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 17/1285 for minimally invasive surgery
• CPC Class Codes: A61B 2017/0023 disposable
• CPC Class Codes: A61B 2017/00367 Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
• CPC Class Codes: A61B 2017/00407 Ratchet means
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable for prosthetic joint-implanting tools A61F2/4603
• CPC Class Codes: A61B 2017/00464 for use with different instruments with hole for different instruments A61B2017/22072
• CPC Class Codes: A61B 2017/00469 for insertion of instruments, e.g. guide wire, optical fibre
• CPC Class Codes: A61B 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00818 Treatment of the gastro-intestinal system
• CPC Class Codes: A61B 2017/292 connection of actuating rod to handle, e.g. ball end in recess
• CPC Class Codes: A61B 2017/2929 with a head rotatable about the longitudinal axis of the shaft
• CPC Class Codes: A61B 2034/301 for introducing or steering flexible instruments inserted into the body, e.g. catheters or endoscopes
• CPC Class Codes: A61B 2090/0803 Counting the number of times an instrument is used
• CPC Class Codes: A61B 2090/0807 Indication means
• CPC Class Codes: A61B 2090/0811 for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument
• CPC Class Codes: A61B 2090/0814 Preventing re-use
• CPC Class Codes: A61B 34/30 Surgical robots
• CPC Class Codes: A61B 34/35 for telesurgery
• CPC Class Codes: A61B 90/03 Automatic limiting or abutting means, e.g. for safety
• CPC Class Codes: A61B 90/08 : Accessories or related features not otherwise provided for

Abstract

The present disclosure relates to a hub assembly for use with an endoscopic assembly of a reposable surgical clip applier having an outer housing defining a channel therethrough, a driver gear slidably disposed within the channel, and a display gear slidably and rotatably disposed within the channel and including first and second plurality of teeth. Distal advancement of the driver gear causes the display gear to advance in a distal direction such that the second plurality of teeth engage a portion of the driver gear and causes the display gear to rotate in a first direction. Retraction of driver gear causes the display gear to translate in a proximal direction such that the first plurality of teeth engage a portion of the channel and causes the drive gear to further rotate in the first direction.

Claims

1. A hub assembly for use with an endoscopic assembly of a reposable surgical clip applier, the hub assembly comprising:

an outer housing defining proximal and distal end surfaces, the proximal and distal end surfaces defining a channel therethrough;

a driver gear slidably supported within the channel; and

a display gear slidably and rotatably supported within the channel, the display gear defining;

a first plurality of teeth configured for selective engagement with a portion of the channel; and

a second plurality of teeth configured for selective engagement with a portion of the driver gear; and

wherein distal advancement of the driver gear causes the display gear to advance in a distal direction such that the second plurality of teeth engage a portion of the driver gear and causes the display gear to rotate in a first direction,

wherein retraction of the driver gear causes the display gear to translate in a proximal direction such that the first plurality of teeth engage a portion of the channel and causes the drive gear to further rotate in the first direction.

2. The hub assembly according to claim 1, wherein a portion of the channel defines a pair of teeth configured to selectively engage the first plurality of teeth of the display gear.

3. The hub assembly according to claim 2, wherein a distal portion of the driver gear defines a plurality of teeth configured to selectively engage the second plurality of teeth of the display gear.

4. The hub assembly according to claim 1, wherein the display gear defines a proximal surface, the proximal surface defining the first plurality of teeth thereon.

5. The hub assembly according to claim 4, wherein the proximal surface of the display gear defines a counterbore therethrough that is configured to receive a portion of the driver gear therein, the counterbore terminating in a proximal facing surface that defines the second plurality of teeth.

6. The hub assembly according to claim 5, wherein the first plurality of teeth defines 48 teeth.

7. The hub assembly according to claim 6, wherein the second plurality of teeth defines 48 teeth.

8. The hub assembly according to claim 7, wherein an outer surface of the display gear defines a plurality of portions having a contrasting color.

9. The hub assembly according to claim 8, wherein the outer housing defines a plurality of windows therethrough, wherein a greater portion of each of the plurality of portions having a contrasting color is visible through each window of the plurality of windows after each actuation of the driver gear.

10. The hub assembly according to claim 9, wherein each engagement of the plurality of teeth of the driver gear with the second plurality of teeth of the display gear causes the display gear to rotate 1/96^th of a rotation in the first direction.

11. The hub assembly according to claim 10, wherein each engagement of the pair of teeth of the channel with the first plurality of teeth of the display gear causes the display gear to rotate 1/96^th of a rotation in the first direction, such that the display gear rotates 1/48^th of a rotation in the first direction during each actuation of the driver gear.

12. The hub assembly according to claim 1, further including a display gear biasing element interposed between a distal surface of the display gear and a proximal facing surface defined by the channel, the display gear biasing element configured to bias the first plurality of teeth of the display gear into engagement with the pair of teeth of the channel.

13. The hub assembly according to claim 1, further including a spindle translatably supported within the channel of the outer housing.

14. The hub assembly according to claim 13, further including a cartridge cylinder slidably disposed within the channel of the outer housing.

15. The hub assembly according to claim 14, further including a linkage coupled to the spindle at a first end portion and the cartridge cylinder at a second, opposite end portion.

16. The hub assembly according to claim 14, further including a return biasing element interposed between the cartridge cylinder and a proximal facing wall defined by the channel, the return biasing element configured to bias the cartridge cylinder in a proximal direction.

17. The hub assembly according to claim 2, wherein each tooth of the pair of teeth of the channel defines a planar surface, and a beveled surface disposed opposite thereto, such that the beveled surface of each tooth causes rotation of the display gear during engagement with the first plurality of teeth thereof.

18. The hub assembly according to claim 3, wherein each tooth of the plurality of teeth of the driver gear defines a planar surface, and a beveled surface disposed opposite thereto, such that the beveled surface of each tooth causes rotation of the display gear during engagement with the second plurality of teeth thereof.

19. The hub assembly according to claim 1, further including an overstroke mechanism disposed within a distal portion of the channel.

20. The hub assembly according to claim 19, wherein the overstroke mechanism is in mechanical communication with the spindle, the overstroke mechanism configured to permit an overextension of the spindle and inhibit damage to a pair of jaws associated with the endoscopic assembly.