Surgical fastener applying apparatus with controlled beam deflection

• US 8,292,149 B2
• Filed: 08/02/2011
• Issued: 10/23/2012
• Est. Priority Date: 10/17/2003
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Ivanko, David
• Primary Examiner(s): Tawfik, Sameh H.
• Assistant Examiner(s): CHUKWURAH, NATHANIEL C
• Application Number:
  US13/195,898
• Publication Number:
  US 20110278345A1
• Time in Patent Office: 448 Days
• Field of Search: 227/175.1, 227/176.1, 227/180.1, 227/19
• US Class Current: 227/175.1
• 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 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/2926 Details of heads or jaws

Abstract

A surgical fastener applying apparatus including an anvil half-section having a distal end and a longitudinal axis; a cartridge receiving half-section having a distal end and operatively couplable with the anvil half-section such that the distal ends of the half-sections are in juxtaposed relation; and a deflection control system operatively engaged with and reinforcing the distal end of the anvil half-section when a force is applied to the distal end of the anvil half-section in a direction transverse to the longitudinal axis.

Claims

1. A surgical fastener applying apparatus, comprising:

an anvil half-section including a distal end and a proximal end defining a longitudinal axis, the anvil half-section including a channel member having pair of juxtaposed side walls interconnected by a base wall;

a cartridge receiving half-section including a distal end, wherein the cartridge receiving half-section is pivotably couplable with the anvil half-section such that the distal end of the anvil half-section is in juxtaposed relation to the distal end of the cartridge receiving half-section, wherein the distal end of the anvil half-section is pivotable relative to the distal end of the cartridge receiving half-section about a pivot axis transverse to the longitudinal axis; and

a deflection control system operatively associated with the anvil half-section for reinforcing the distal end of the anvil half-section, the deflection control system including;

a layered reinforcing member having a plurality of reinforcing plates extending longitudinally between the side walls and resting atop the base wall of the anvil half-section.

2. The surgical fastener applying apparatus according to claim 1, wherein the deflection control system forms a leaf-spring.

3. The surgical fastener applying apparatus according to claim 1, further comprising a pair of juxtaposed shoulders extending transversely from an inner surface of each of the side walls of the anvil half-section.

4. The surgical fastener applying apparatus according to claim 3, wherein the shoulders are integrally formed with the channel member.

5. The surgical fastener applying apparatus according to claim 4, wherein the shoulders have a height greater than the reinforcing member.

6. The surgical fastener applying apparatus according to claim 1, wherein the reinforcing member includes three reinforcing plates.

7. The surgical fastener applying apparatus according to claim 1, wherein each of the reinforcing plates have a different thickness.

8. The surgical fastener applying apparatus according to claim 7, wherein the reinforcing plate closest to the base wall is the thickest.

9. The surgical fastener applying apparatus according to claim 7, wherein the reinforcing plate furthest from the base wall is the thinnest.

10. The surgical fastener applying apparatus according to claim 1, wherein the reinforcing plates are fabricated from a material selected from a group consisting of stainless steel, titanium, polycarbonate, fiberglass, and resins.