Implant

• US 20030100954A1
• Filed: 10/10/2002
• Published: 05/29/2003
• Est. Priority Date: 04/20/2000
• Status: Active Grant

• Current Assignee: Johnson & Johnson Medical GmbH (Johnson & Johnson)
• Original Assignee: Johnson & Johnson Medical GmbH (Johnson & Johnson)
• Inventors: Schuldt-Hempe, Barbara, Walther, Christoph
• Granted Patent: US 7,156,858 B2
• Time in Patent Office: Days
• US Class Current: 623/23.72
• CPC Class Codes: A61B 17/0057 Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009
• CPC Class Codes: A61B 2017/00597 Implements comprising a membrane
• CPC Class Codes: A61B 2017/00606 Implements H-shaped in cross-section, i.e. with occluders on both sides of the opening
• 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: A61F 2210/0004 bioabsorbable
• CPC Class Codes: A61F 2250/0018 differing in elasticity, stiffness or compressibility
• CPC Class Codes: D04B 1/104 Openwork fabric, e.g. pelerine fabrics
• CPC Class Codes: D04B 1/12 characterised by thread material
• CPC Class Codes: D04B 21/08 characterised by thread material
• CPC Class Codes: D04B 21/12 characterised by thread material
• CPC Class Codes: D10B 2509/08 Hernia repair mesh

Abstract

An implant (1) has an areal basic structure made from weft-knitted or warp-knitted fabric which has a greater extendability in a central area (3) than in the peripheral area (4) of the implant (1). The basic structure can be deformed in the central area (3) of the implant (1) to produce a projection (30) into the third dimension. The implant (1) preferably has a stiffening structure (22, 24) in the area of the free end (32) of the projection (30). The implant (1) is particularly suitable for treating hernias.

Claims

1. Implant, comprising an areal basic structure (2) made from a weft-knitted or warp-knitted fabric, the weft-knitted or warp-knitted fabric of the areal basic structure (2) having a greater extendability in a central area (3) of the implant (1) than in the peripheral area (4) of the implant (1).

2. Implant according to claim 1, characterized in that the mass per unit area of the weft-knitted or warp-knitted fabric of the areal basic structure (2) is smaller in a central area (3) of the implant (1) than in the peripheral area (4) of the implant (1).

3. Implant according to claim 1 or 2, characterized in that the mesh density of the weft-knitted or warp-knitted fabric of the areal basic structure (2) is lower in a central area (3) of the implant (1) than in the peripheral area (4) of the implant (1).

4. Implant according to one of claims 1 to 3, characterized in that the weft-knitted or warp-knitted fabric is made in one piece.

5. Implant according to one of claims 1 to 4, characterized in that the basic structure (2) is deformed in a central area (3) of the implant (1) to produce a projection (30) into the third dimension.

6. Implant according to claim 5, characterized in that the projection (30) is designed as a hollow protruberance.

7. Implant according to claim 5 or 6, characterized in that the projection (30) is broadened mushroom-like in the area of its free end (32).

8. Implant according to one of claims 5 to 7, characterized in that the projection (30) is dimensionally stabilized.

9. Implant according to one of claims 5 to 8, characterized in that the implant (1) has a stiffening structure (20) in the area of the free end (32) of the projection (30).

10. Implant according to claim 9, characterized in that the stiffening structure (20) is annular or disc-like.

11. Implant according to claim 9 or 10, characterized in that the stiffening structure (20) can be folded.

12. Implant according to claim 11, characterized in that the stiffening structure (20) is expandable automatically from a folded state into an unfolded state.

13. Implant according to claim 12, characterized in that the stiffening structure (20) has an annular or disc-like support (22) from the periphery of which several elastic arcs (24) extend, distributed over the circumference.

14. Implant according to claim 13, characterized in that the elastic arcs (24) consist of thread material, preferably of polypropylene monofilament.

15. Implant according to claim 13 or 14, characterized in that the support (22) is curved in the manner of a cap.

16. Implant according to one of claims 1 to 15, characterized in that the shape of the area (3) of the basic structure (2) with greater extendability is chosen from the following group of shapes:

square, rectangular, cruciform (3), polygonal (3′

, 3″

), circular.