BARBED SUTURE CREATED HAVING BARBS DEFINED BY VARIABLE-ANGLE CUT

• US 20110093010A1
• Filed: 12/20/2010
• Published: 04/21/2011
• Est. Priority Date: 08/31/2001
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Quill Medical, Inc. (Angiotech Pharmaceuticals Incorporated)
• Inventors: Genova, Perry, Williams, Robert C. III, Jewett, Warren
• Granted Patent: US 8,926,659 B2
• Time in Patent Office: Days
• US Class Current: 606/228
• CPC Class Codes: A61B 17/06166 Sutures suture materials A61L17/00; manufacture of artificial threads D01D; treatment of threads D06M
• CPC Class Codes: A61B 17/064 Surgical staples, i.e. penetrating the tissue
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/06176 with protrusions, e.g. barbs
• CPC Class Codes: B21J 5/068 Shaving, skiving or scarifying for forming lifted portions, e.g. slices or barbs, on the surface of the material
• CPC Class Codes: B26D 3/08 Making a superficial cut in the surface of the work without removal of material, e.g. scoring, incising
• CPC Class Codes: Y10T 29/20 Fence barb making
• CPC Class Codes: Y10T 83/02 Other than completely through work thickness
• CPC Class Codes: Y10T 83/0333 Scoring
• CPC Class Codes: Y10T 83/0341 Processes
• CPC Class Codes: Y10T 83/0385 Rotary scoring blade
• CPC Class Codes: Y10T 83/04 Processes
• CPC Class Codes: Y10T 83/202 With product handling means
• CPC Class Codes: Y10T 83/4607 With rotary work-carrier
• CPC Class Codes: Y10T 83/896 Rotatable wound package supply

Abstract

A barbed suture is disclosed having barbs defined by a variable-angle cut surface. A cutting bed supports the suture during cutting. A cutting device is moved through the suture thread along a selected path. The angle of the cutting device is changed during cutting thereby changing the angle of the cut surface which defines each barb. A cutting arm is articulated to allow change of the angle of the cutting device. The change in the angle of the cutting device is used to control the shape and depth of cut of the barbs.

Claims

1. A barbed suture comprising:

a suture thread having a longitudinal axis and an exterior surface;

a plurality of barbs disposed along the exterior surface said suture thread;

each barb being at least one of, rotationally displaced around the longitudinal axis of the suture thread, and axially displaced along the longitudinal axis of the suture thread, relative to each adjacent barb;

each barb having a tip and a base;

each barb being defined by a cut into the exterior surface of said suture thread; and

wherein the cut has an angle relative to the longitudinal axis of the suture thread which changes between the tip of each barb and the base of each barb.

2. The barbed suture of claim 1, wherein the angle of the cut relative to the longitudinal axis of the suture thread is larger at the tip of the barb than at the base of each barb.

3. The barbed suture of claim 1, wherein the tip of each barb is elevated above the exterior surface of said suture thread.

4. The barbed suture of claim 1, wherein the cut is made with an oscillating blade.

5. The barbed suture of claim 1, wherein each barb is rotationally displaced by 120 degrees around the longitudinal axis of the suture thread relative to each adjacent barb.

6. The barbed suture of claim 1, wherein each barb is rotationally displaced by 120 degrees around the longitudinal axis of the suture thread and also axially displaced along the longitudinal axis of the suture thread relative to each adjacent barb.

7. The barbed suture of claim 1, wherein each barb is rotationally displaced by 180 degrees around the longitudinal axis of the suture thread relative to each adjacent barb.

8. A barbed suture comprising:

a suture thread having a longitudinal axis and an exterior surface;

a plurality of barbs disposed along the exterior surface said suture thread;

each barb being at least one of, rotationally displaced around the longitudinal axis of the suture thread, and axially displaced along the longitudinal axis of the suture thread, relative to each adjacent barb;

each barb having a tip and a base;

each barb being defined by a cut surface extending into the suture thread from the exterior surface of said suture thread; and

wherein the cut surface has an angle relative to the longitudinal axis of the suture thread which changes between the tip of each barb and the base of each barb.

9. The barbed suture of claim 8, wherein the angle of the cut surface relative to the longitudinal axis of the suture thread is larger at the tip of the barb than at the base of each barb.

10. The barbed suture of claim 8, wherein the tip of each barb is elevated above the exterior surface of said suture thread.

11. The barbed suture of claim 8, wherein the cut is made with an oscillating blade.

12. The barbed suture of claim 8, wherein each barb is rotationally displaced by 120 degrees around the longitudinal axis of the suture thread relative to each adjacent barb.

13. The barbed suture of claim 8, wherein each barb is rotationally displaced by 120 degrees around the longitudinal axis of the suture thread and also axially displaced along the longitudinal axis of the suture thread relative to each adjacent barb.

14. The barbed suture of claim 8, wherein each barb is rotationally displaced by 180 degrees around the longitudinal axis of the suture thread relative to each adjacent barb.

15. A barbed suture comprising:

a suture thread having a longitudinal axis and an exterior surface;

a plurality of barbs disposed along the exterior surface said suture thread;

each barb being at least one of, rotationally displaced around the longitudinal axis of the suture thread, and axially displaced along the longitudinal axis of the suture thread, relative to each adjacent barb;

each barb being defined by an angled cut into the exterior surface of said suture thread;

each angled cut characterized by having a first cut portion disposed at a first angle relative to the longitudinal axis of the suture thread and a second cut portion disposed at a second angle relative to the longitudinal of the suture thread; and

wherein the first angle is different from the second angle.

16. The barbed suture of claim 15, wherein:

each barb comprises a tip and a base;

wherein the tip of each barb is defined by the first cut portion; and

the base of each barb is defined by the second cut portion.

17. The barbed suture of claim 16, wherein the first angle is larger than the second angle.

18. The barbed suture of claim 15, wherein the tip of each barb is elevated above the exterior surface of said suture thread.

19. The barbed suture of claim 15, wherein the angled cut is made with an oscillating blade.

20. The barbed suture of claim 15, wherein each barb is rotationally displaced by 120 degrees around the longitudinal axis of the suture thread relative to each adjacent barb.

21. The barbed suture of claim 15, wherein each barb is rotationally displaced by 120 degrees around the longitudinal axis of the suture thread and also axially displaced along the longitudinal axis of the suture thread relative to each adjacent barb.

22. The barbed suture of claim 15, wherein each barb is rotationally displaced by 180 degrees around the longitudinal axis of the suture thread relative to each adjacent barb.