Composite self-cohered web materials

• US 20070026040A1
• Filed: 07/29/2005
• Published: 02/01/2007
• Est. Priority Date: 07/29/2005
• Status: Abandoned Application

• Current Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Original Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Inventors: Flynn, Charles, White, Charles, Farnsworth, Ted, Crawley, Jerald
• Application Number:
  US11/193,090
• Publication Number:
  US 20070026040A1
• Time in Patent Office: Days
• US Class Current: 424/424
• CPC Class Codes: A61B 17/07292 Reinforcements for staple line, e.g. pledgets
• CPC Class Codes: A61L 31/146 Porous materials, e.g. foams or sponges
• CPC Class Codes: A61L 31/148 Materials at least partially resorbable by the body

Abstract

The present invention is directed to implantable bioabsorbable non-woven self-cohered web materials having a high degree of porosity. The web materials are very supple and soft, while exhibiting proportionally increased mechanical strength in one or more directions. The web materials often possess a high degree of loft. The web materials can be formed into a variety of shapes and forms suitable for use as implantable medical devices or components thereof.

Claims

1. An implantable article comprising melt-formed continuous filaments intermingled to form a porous web wherein said filaments are self-cohered to each other at multiple contact points, wherein said filaments comprise at least one semi-crystalline polymeric component covalently bonded to or blended with at least one amorphous polymeric component, wherein the filaments possess partial to full polymeric component phase immiscibility when in a crystalline state, and wherein said implantable article is adapted to wrap around a surgical anastomosis.

2. The implantable article of claim 1 wherein said article has a percent porosity greater than ninety in the absence of additional components.

3. The implantable article of claim 1 wherein the percent porosity is greater than ninety-one in the absence of additional components.

4. The implantable article of claim 1 wherein the at least one semi-crystalline polymeric component is covalently bonded to at least one amorphous polymeric component.

5. The implantable article of claim 4 wherein the components comprise a block copolymer.

6. The implantable article of claim 1 wherein the at least one semi-crystalline polymeric component is blended with the at least one amorphous polymeric component.

7. The implantable article of claim 6 wherein at least one of the components is a block co-polymer.

8. The implantable article of claim 1 wherein at least one semi-crystalline polymeric component has a melting point greater than eighty degrees centigrade (80°

C.).

9. An implantable article comprising melt-formed continuous filaments intermingled to form a porous web wherein said filaments are self-cohered to each other at multiple contact points, wherein said filaments comprise a first semi-crystalline polymeric component covalently bonded to or blended with at least one additional semi-crystalline polymeric component, wherein the filaments possess partial to full polymeric component phase immiscibility when in a crystalline state, and wherein said implantable article is adapted to wrap around a surgical anastomosis

10. The implantable article of claim 9 wherein said implantable article has a percent porosity greater than ninety in the absence of additional components.

11. The implantable article of claim 9 wherein said implantable article has a percent porosity greater than ninety-one in the absence of additional components.

12. The implantable article of claim 9 wherein the at least one semi-crystalline polymeric component is covalently bonded to at least one amorphous polymeric component.

13. The implantable article of claim 12 wherein the components comprise a block copolymer.

14. The implantable article of claim 9 wherein the at least one semi-crystalline polymeric component is blended with the at least one amorphous polymeric component.

15. The implantable article of claim 14 wherein at least one of the components is a block co-polymer.

16. The implantable article of claim 9 wherein at least one semi-crystalline polymeric component has a melting point greater than eighty degrees centigrade (80°

C.).