Pile mesh prosthesis

• US 6,783,554 B2
• Filed: 02/20/2001
• Issued: 08/31/2004
• Est. Priority Date: 02/20/2001
• Status: Expired due to Term

• Current Assignee: Atrium Medical Corporation (Getinge AB)
• Original Assignee: Atrium Medical Corporation (Getinge AB)
• Inventors: Karwoski, Theodore, Herweck, Steve A., Gingras, Peter H., Amara, Ryan A.
• Primary Examiner(s): McDermott, Corrine
• Assistant Examiner(s): Blanco, Javier G.
• Application Number:
  US09/789,333
• Publication Number:
  US 20020116070A1
• Time in Patent Office: 1,288 Days
• Field of Search: 623/1.5, 623/1.52, 623/23.72, 623/23.74, 623/23.76, 623/1.3, 623/11.11, 606/151
• US Class Current: 623/23.76
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 17/12099 characterised by the location of the occluder
• CPC Class Codes: A61B 17/12168 having a mesh structure A61B17/1214 takes precedence
• CPC Class Codes: A61B 17/12177 comprising additional materials, e.g. thrombogenic, having filaments, having fibers or being coated
• CPC Class Codes: A61F 2/0063 Implantable repair or support meshes, e.g. hernia meshes
• CPC Class Codes: A61F 2250/0023 differing in porosity
• CPC Class Codes: D04B 1/02 Pile fabrics or articles having similar surface features
• CPC Class Codes: D04B 1/22 specially adapted for knitting goods of particular configuration
• CPC Class Codes: D04B 21/02 Pile fabrics or articles having similar surface features
• CPC Class Codes: D04B 21/10 Open-work fabrics
• CPC Class Codes: D10B 2509/08 Hernia repair mesh

Abstract

A method and apparatus relating to a biocompatible soft tissue implant is disclosed. The implant, in the form of a prosthesis, is constructed of a knitted pile mesh material arranged into either a 3-dimensional structure or a planar shape or structure. The material or fabric includes a plurality of filament extensions projecting outwardly therefrom. The filament extensions can be radially projecting looping filaments from one or more rows of the knitted pile mesh material. The combination of the filament extensions with the 3-dimensional structure results in the biocompatible implant having a structural resistance to hinder anticipated crushing forces applied to the implant, and also provide a suitable 3-dimensional structure for promoting rapid tissue in-growth to anchor such implant without migration and strengthen the repaired tissue area.

Claims

1. A biocompatible implant comprising:

a prosthesis constructed of at least two rows of knitted pile mesh material, wherein at least a portion of said at least two rows of knitted pile mesh material comprises a plurality of filament extensions that project radially and outwardly, wherein am least a portion of said two rows of knitted pile mesh material comprise at least one row of knitted pile mesh material joined to at least one additional row of knitted pile mesh material by am least one filament bridge.

2. The biocompatible implant according to claim 1, wherein said plurality filament extensions are formed of a plurality of looping filaments.

3. The biocompatible implant according to claim 2, wherein said plurality of looping filaments provide radial compression resistance, hindering a crushing force applied to said implant.

4. The biocompatible implant according to claim 2, wherein each of said plurality of looping filaments are substantially uniform in projection distance from said rows of knitted pile mesh material.

5. The biocompatible implant according to claim 1, wherein a plurality of monofilament bridges couple two or more rows of knitted pile mesh rows together.

6. The biocompatible implant according to claim 5, wherein said monofilament bridges flexibly yield upon application of a crushing force applied to said implant, allowing said two or more rows of knitted pile mesh to move relative to each other.

7. The biocompatible implant according to claim 6, wherein said flexible yielding of said monofilament bridges allows said two or more rows of knitted pile mesh to collapse toward each other.

8. The biocompatible implant according to claim 5, wherein said plurality of filament extensions are formed of a plurality of looping filaments that project outwardly from said two or more rows of knitted pile mesh material.

9. The biocompatible implant according to claim 8, wherein said plurality of looping filaments project outwardly from said two or more rows of knitted pile mesh material in a variably non-equidistant manner.

10. The biocompatible implant according to claim 5, wherein said knitted pile mesh material is formed into a 3-dimensional structure suitable for conforming to a tissue defect.

11. The biocompatible implant according so claim 10, wherein a gathering of said knitted pile mesh material is arranged internally within said 3-dimensional structure.

12. The biocompatible implant according to claim 10, wherein at least a portion of said plurality of filament extensions extend substantially orthogonal from a surface of said 3-dimensional structure.

13. The biocompatible implant according to claim 10, wherein said 3-dimensional structure is a generally conical arrangement.

14. The biocompatible implant according to claim 13, wherein said plurality of monofilament bridges flexibly yield upon application of a crushing force applied to said implant, allowing said two or more rows of knitted pile mesh so move relative to each other.

15. The biocompatible implant according to claim 14, wherein said flexible yielding of said plurality monofilament bridges allows said two or more rows of knitted pile mesh to collapse toward each other.

16. The biocompatible implant according to claim 10, wherein a substantially axial force placed on a lip of said conical arrangement causes said material to collapse toward a base of said conical arrangement without rigidly transmitting said axial force to said base.

17. The biocompatible implant according to claim 1, wherein said 3-dimensional structure comprises a generally conical arrangement having an internal material-gathering and said conical arrangement and internal material gathering are comprised of a single piece of said knitted pile mesh material.

18. The biocompatible implant according to claim 1, wherein said knitted pile mesh material is in a generally planar arrangement.

19. The biocompatible implant according to claim 1, wherein said filament extensions project sway from said at least one row of knitted pile mesh material.