SURGICAL HEMOSTATIC CLIP INCLUDING WORK-HARDENED, MOVEMENT-INHIBITING STRUCTURE AND METHOD OF MANUFACTURING SAME

• US 20110295290A1
• Filed: 05/28/2010
• Published: 12/01/2011
• Est. Priority Date: 05/28/2010
• Status: Abandoned Application

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Whitfield, Kenneth H.
• Application Number:
  US12/789,967
• Publication Number:
  US 20110295290A1
• Time in Patent Office: Days
• US Class Current: 606/158
• CPC Class Codes: A61B 17/08 Wound clamps or clips, i.e. not or only partly penetrating the tissue suture bridges A61B17/0466; Devices for bringing together the edges of a wound
• CPC Class Codes: A61B 17/122 Clamps or clips , e.g. for the umbilical cord for the vas deferens A61F6/206
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

A surgical clip includes a clip body defining opposed, first and second leg portions. Each of the first and second leg portions includes a distal end region and a proximal end region, with the proximal end regions connected at an apex to form a bail portion. The surgical clip also includes a work-hardened, movement-inhibiting structure defined in the clip body adapted to enhance clip retention on tissue.

Claims

1. A surgical clip, comprising:

a clip body defining opposed, first and second leg portions, each of the first and second leg portions including a distal end region and a proximal end region, with the proximal end regions connected at an apex to form a bail portion; and

a work-hardened, movement-inhibiting structure defined in the clip body adapted to enhance clip retention on tissue.

2. The surgical clip of claim 1, wherein the work-hardened, movement-inhibiting structure is disposed entirely within the bail portion.

3. The surgical clip of claim 2, wherein the work-hardened, movement-inhibiting structure is an elongated recess formed by cold working the surgical clip.

4. The surgical clip of claim 3, wherein the work-hardened, movement-inhibiting structure is a formed by fixturing the clip and applying a stamping force to an inner surface of the bail portion.

5. The surgical clip of claim 1, wherein each of the first and second leg portions includes an inner surface defining a tissue-contacting surface between which tissue is clamped during application of the surgical clip thereto.

6. The surgical clip of claim 5, wherein the work-hardened, movement-inhibiting structure includes first and second portions, the first portion disposed in the apex, and the second portion disposed in the tissue-contacting surface of the first leg portion.

7. The surgical clip of claim 5, wherein the apex includes an inner surface and the work-hardened, movement-inhibiting structure is an elongated recess formed by applying a stamping force to the inner surface of the apex and the tissue-contacting surface of the first leg portion along a portion of the proximal end region of the first leg portion.

8. The surgical clip of claim 7, wherein the elongated recess has a generally C-shaped cross section.

9. The surgical clip of claim 5, further comprising a first tissue-gripping structure formed in the tissue-contacting surface of the first leg portion and a second tissue-gripping structure formed in the tissue-contacting surface of the second leg portion.

10. The surgical clip of claim 9, wherein the first and second tissue-gripping structure each includes a plurality of multi-faceted, movement-inhibiting structures defining a plurality of recesses disposed in a pattern on the tissue-contacting surfaces at the distal end regions of the first and second leg portions.

11. The surgical clip of claim 1, wherein each of the first and second leg portions includes an outer surface defining a force-receiving surface for receiving the compression force of a clip applying apparatus.

12. The surgical clip of claim 11, wherein the work-hardened, movement-inhibiting structure is an elongated recess formed in the force-receiving surface.

13. A surgical clip, comprising:

a clip body defining opposed, first and second leg portions, each of the first and second leg portions including a distal end region and a proximal end region, with the proximal end regions connected at an apex to form a bail portion, each of the first and second leg portions further including an inner surface defining a tissue-contacting surface between which tissue is clamped during application of the surgical clip thereto; and

a work-hardened, movement-inhibiting structure defined in at least a portion of the tissue-contacting surface adapted to enhance clip retention on tissue.

14. The surgical clip of claim 13, wherein the work-hardened, movement-inhibiting structure is an elongated recess formed by cold working the surgical clip.

15. The surgical clip of claim 14, wherein the work-hardened, movement-inhibiting structure is disposed entirely within the bail portion.

16. A method of manufacturing a work-hardened, movement-inhibiting structure of a surgical clip, comprising the steps of:

providing a surgical clip including a generally U-shaped clip body defining opposed, first and second leg portions, each of the first and second leg portions including a proximal end region, the proximal end regions connected at an apex to form a bail portion;

providing a fixture configured to supportively secure the surgical clip to allow for application of a pressing force to a first surface of the bail portion of the clip body;

releasablely coupling the surgical clip to the fixture;

applying a predetermined pressing force to the first surface of the bail portion to form an elongated recess therein, the elongated recess having a generally C-shaped cross section, thereby forming a work-hardened, movement-inhibiting structure of the surgical clip; and

removing the surgical clip from the fixture.

17. The method of manufacturing a surgical clip in accordance with claim 16, further comprising the step of:

providing a stamping apparatus capable of applying the predetermined pressing force to the first surface of the bail portion.