Surgical instrument and cartridge for use therewith

• US 9,364,227 B2
• Filed: 12/12/2014
• Issued: 06/14/2016
• Est. Priority Date: 06/30/2011
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Kostrzewski, Stanislaw
• Primary Examiner(s): Smith, Scott A.
• Application Number:
  US14/568,292
• Publication Number:
  US 20150097019A1
• Time in Patent Office: 550 Days
• Field of Search: 227/19, 227/175.1, 227/176.1, 227/175.2, 227/178.1, 227/180.1, 606/139, 606/153, 606/219
• US Class Current: 1/1
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/072 for applying a row of staples in a single action , e.g. the staples being applied simultaneously
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/07221 curved
• CPC Class Codes: A61B 2017/07228 Arrangement of the staples
• CPC Class Codes: A61B 2017/07271 characterised by its cartridge
• CPC Class Codes: A61B 2017/07278 characterised by its sled or its staple holder
• CPC Class Codes: A61B 2017/07285 characterised by its cutter
• CPC Class Codes: A61B 2017/2933 camming or guiding means
• CPC Class Codes: A61B 2017/320052 Guides for cutting instruments by marking A61B2090/395
• CPC Class Codes: F04C 2270/041 Controlled or regulated

Abstract

A cartridge assembly is disclosed. The cartridge assembly comprises a cartridge housing and a cartridge. The cartridge housing has a plurality of biasing members thereon. The cartridge is configured for reception at least partially within the cartridge housing. The cartridge includes a plurality of fasteners at least partially therein. The cartridge has a plurality of pockets. Each fastener is ejectable from a corresponding pocket. The cartridge has a plurality of chambers, and each chamber is adjacent a pocket and configured to store at least one fastener at least partially therein. At least one fastener is movable from the chamber to the pocket. The cartridge includes a plurality of pushers, where each pusher is configured to engage at least one corresponding fastener. At least one pusher includes at least one cam surface thereon. Each biasing member urges at least one corresponding fastener toward the corresponding pocket.

Claims

1. A cartridge assembly for use with a surgical instrument, comprising:

a cartridge housing having a finger; and

a cartridge configured to be received at least partially within the cartridge housing, the cartridge defining a chamber and a pocket extending through a tissue-contacting surface of the cartridge, the chamber configured to receive a surgical fastener, wherein the finger extends inwardly toward the cartridge such that the finger is inwardly biased toward the cartridge, the finger urging the surgical fastener toward the pocket.

2. The cartridge assembly according to claim 1, wherein the cartridge further includes a pusher configured to eject the surgical fastener through the tissue-contacting surface.

3. The cartridge assembly according to claim 2, wherein the cartridge further includes a plate operatively coupled to the finger.

4. The cartridge assembly according to claim 3, wherein the plate is configured to inhibit actuation of the pusher in the absence of the surgical fastener in the pocket.

5. The cartridge assembly of claim 1, wherein the finger is a leaf spring.

6. The cartridge assembly of claim 1, wherein the cartridge housing further includes a plurality of fingers disposed on opposing sides of the cartridge housing.

7. The cartridge assembly according to claim 1, wherein the finger is flexible.

8. A surgical instrument comprising:

a handle assembly including a movable handle;

an elongate portion extending distally from the handle assembly; and

a cartridge assembly coupled to the elongate portion, the cartridge assembly including;

a cartridge housing having a finger; and

a cartridge configured to be received at least partially within the cartridge housing, the cartridge defining a chamber and a pocket extending through a tissue-contacting surface of the cartridge, the chamber configured to receive a surgical fastener, wherein the finger extends inwardly toward the cartridge such that the finger is inwardly biased toward the cartridge, the finger urging the surgical fastener toward the pocket, and actuation of the handle assembly causes ejection of the surgical fastener through the tissue-contacting surface of the cartridge.

9. The surgical instrument according to claim 8, wherein cartridge housing further includes a plurality of fingers disposed on opposing sides of the cartridge housing.

10. The surgical instrument according to claim 8, wherein the finger is a leaf spring.

11. The surgical instrument according to claim 8, wherein the cartridge further includes a pusher configured to eject the surgical fastener through the tissue-contacting surface of the cartridge.

12. The surgical instrument according to claim 11, wherein the cartridge includes a plate operatively coupled to the finger.

13. The surgical instrument according to claim 12, wherein the plate is configured to inhibit actuation of the pusher in the absence of the surgical fastener in the pocket.

14. The surgical instrument according to claim 11, further including a driver disposed in mechanical cooperation with the cartridge assembly, the driver configured to engage the pusher.

15. The surgical instrument according to claim 14, wherein the driver is configured to engage the pusher upon actuation of the movable handle of the handle assembly.