Prosthetic repair fabric

• US 7,614,258 B2
• Filed: 10/19/2006
• Issued: 11/10/2009
• Est. Priority Date: 10/19/2006
• Status: Active Grant

• Current Assignee: C.R. Bard, Inc. (Becton Dickinson & Co)
• Original Assignee: C.R. Bard, Inc. (Becton Dickinson & Co)
• Inventors: DiGregorio, Rocco, Cherok, Dennis, Kirby, Michael, Grumbling, Alan
• Primary Examiner(s): WORRELL JR, LARRY D
• Application Number:
  US11/583,364
• Publication Number:
  US 20080147198A1
• Time in Patent Office: 1,118 Days
• Field of Search: 661/95, 661/92, 661/93, 662/02
• US Class Current: 66/192
• CPC Class Codes: A61F 2/0063 Implantable repair or support meshes, e.g. hernia meshes
• CPC Class Codes: A61F 2002/0068 having a special mesh pattern
• CPC Class Codes: D04B 21/12 characterised by thread material
• CPC Class Codes: D10B 2509/08 Hernia repair mesh

Abstract

The repair fabric includes a dual bar warp knit mesh for use in repairing soft tissue and muscle wall defects, including hernia repair and chest wall reconstruction.

The repair fabric may be produced according to a first bar pattern chain of 4/2 4/6 4/2 6/8 6/4 6/8 and a second bar pattern chain of 6/8 2/0 6/8 4/2 8/10 4/2.

Claims

1. An implantable prosthetic repair fabric, comprising:

a knit mesh that includes a plurality of generally polygonal shaped primary pores defined by knitted strands of filaments; and

a pair of individual filaments that extend across each primary pore to define a plurality of secondary pores within each primary pore, each of the pair of individual filaments extending substantially parallel to one another.

2. The implantable prosthetic fabric according to claim 1, wherein each primary pore has an area of approximately 0.0089 to 0.0103 square inches.

3. The implantable prosthetic fabric according to claim 2, wherein each of the plurality of secondary pores has an area of approximately 0.0022 to 0.0032 square inches.

4. The implantable prosthetic fabric according to claim 1, wherein the primary pores are generally diamond shaped.

5. The implantable prosthetic fabric according to claim 4, wherein the plurality of secondary pores in each primary pore include two generally triangular secondary pores and a generally rectangular pore positioned between the two generally triangular secondary pores.

6. The implantable prosthetic repair fabric according to claim 1, wherein the mesh is formed of knitted monofilaments.

7. The implantable prosthetic repair fabric according to claim 6, wherein the monofilaments include polypropylene monofilament.

8. The implantable prosthetic repair fabric according to claim 7, wherein the monofilament has a diameter of approximately 0.0045 to 0.0051 inches.

9. The implantable prosthetic repair fabric according to claim 7, wherein the monofilament has a diameter of approximately 0.0048 inches.

10. The implantable prosthetic repair fabric according to claim 7, wherein the monofilament has a denier of approximately 90 to 100.

11. The implantable prosthetic repair fabric according to claim 7, wherein the monofilament has a tenacity of approximately 6.00 to 8.50 grams per denier.

12. The implantable prosthetic repair fabric according to claim 7, wherein the monofilament has a tenacity of approximately 7.25 grams per denier.

13. The implantable prosthetic repair fabric according to claim 1, wherein the mesh has a knit construction that includes approximately 34 to 36 courses per inch and approximately 12 to 17 wales per inch.

14. The implantable prosthetic repair fabric according to claim 1, wherein the mesh has a weight per unit area of approximately 0.027 to 0.030 grams per square inch.

15. The implantable prosthetic repair fabric according to claim 1, wherein the mesh has a thickness of approximately 0.017 to 0.019 inches.