Textured surface frosthesis implants

• US 4,960,425 A
• Filed: 08/04/1989
• Issued: 10/02/1990
• Est. Priority Date: 05/27/1987
• Status: Expired due to Term

• Current Assignee: Mentor Corporation (Johnson & Johnson)
• Original Assignee: Mentor Corporation (Johnson & Johnson)
• Inventors: Purkait, Bobby K., Yan, John Y. J.
• Primary Examiner(s): Isabella, David J.
• Application Number:
  US07/393,113
• Time in Patent Office: 424 Days
• Field of Search: 623/7, 623/8, 623/1, 623/2, 623/10, 623/11, 623/12, 623/16, 623/18, 623/66, 128/DIG. 21, 606/228, 606/229, 606/215, 606/151, 606/152, 606/153, 604/890, 604/891
• US Class Current: 623/8
• CPC Class Codes: A61F 2/12 Mammary prostheses and implants
• CPC Class Codes: B29C 43/021 characterised by the shape of the surface

Abstract

A surgical prosthesis is disclosed having a textured exterior surface formed of non-absorbent material substantially free of pores and interstices. The invented device is usable for mammary and other implants. Various methods of manufacturing the device are also disclosed.

Claims

1. A surgical prosthesis comprising:

an outer membrane forming an enclosure and comprising a textured exterior surface disposed over at least a portion of said outer membrane, said texture exterior surface being substantially non-absorbent to body fluids and substantially free of fiber and being formed of a plurality of raised portions and indentations, wherein said raised portions are 0.0003 to 0.030 inches in height and 0.0003 to 0.10 in width; and

a filler material disposed within said enclosure.

2. The surgical prosthesis of claim 1 wherein said textured exterior surface is disposed over a substantial portion of said outer membrane.

3. The surgical prosthesis of claim 2 wherein said textured exterior surface is disposed over the entire outer membrane.

4. The surgical prosthesis of claim 1 wherein said outer membrane comprises:

a shell comprising a major portion of said outer membrane, and

a patch comprising a minor portion of said outer membrane wherein in combination said shell and said patch form a fluid impervious enclosure.

5. The surgical prosthesis of claim 4 wherein both the shell and the patch are texturized.

6. The surgical prosthesis of claim 1 wherein said texturized exterior surface comprises silicone rubber.

7. The surgical prosthesis of claim 1 wherein said surgical prosthesis is a mammary implant.

8. The surgical prosthesis of claim 1 wherein said textured exterior surface comprises irregularly shaped and sized raised portions and indentations.

9. The surgical prosthesis of claim 1 wherein said textured exterior surface comprises regularly shaped and sized raised portions and indentations.

10. A mammary implant comprising:

an outer membrane forming an enclosure and comprising a textured exterior surface formed of flexible, biocompatible, fluid impervious material, said textured surface being substantially non-absorbent to body fluids and substantially free of fiber and being formed of a plurality of raised portions and indentations, wherein said raised portions are 0.0003 to 0.030 inches in height and 0.0003 to 0.10 inches in width; and

a filler material disposed within said enclosure and selected from saline gel and combinations thereof.

11. A surgical prosthesis of claim 10 wherein said textural exterior surface is formed of material selected from silicone rubber, segmented polyurethane, copolymers of silicone rubber, laminates of silicone rubber and silicone rubber and polyurethane copolymers and combinations thereof.

12. A surgical prosthesis comprising:

an outer membrane forming an enclosure and formed of a biocompatible elastomeric material comprising a textured exterior surface disposed over at least a portion of said outer membrane, said textured exterior surface comprising a plurality of raised portions substantially free of pores, interstices and fibers, and said textured exterior surface being substantially non-absorbent to body fluids and wherein said raised portions are 0.0003 to 0.030 inches in height and 0.0003 to 0.10 inches in width; and

a filler material disposed within said enclosure.

13. The surgical prosthesis of claim 12 wherein said raised portions are alligned substantially transverse to the textured exterior surface.

15. A surgical prosthesis of claim 12 wherein said textural exterior surface is formed of material selected from silicone rubber, segmented polyurethane, copolymers of silcone rubber, laminates of silicone rubber, and silicone rubber and polyurethane copolymers, and combinations thereof.

16. A surgical prosthesis consisting essentially of:

an outer membrane forming an enclosure and formed entirely of elastomeric material and having disposed on at least a portion of the exterior surface thereof a plurality of raised portions and indentations said exterior surface being substantially free of fiber and wherein said raised portions are 0.0003 to 0.030 inches in height and 0.0003 to 0.10 inches in width; and

a filler material disposed within said enclosure.

14. The surgical prosthesis of claim 17 wherein said textured exterior surface is substantially free of pores and interstices which are aligned parallel to a plane defined by said exterior surface.

17. A surgical prosthesis of claim 16 wherein said elastomeric material is selected from silicone rubber, segmented polyurethane, copolymers of silicone rubber, laminates of silicone rubber, and silicone rubber and polyurethane copolymers, and combinations thereof.

18. A surgical prosthesis comprising:

an outer membrane comprising a textured exterior surface disposed over at least a portion of said outer membrane, said outer membrane consisting essentially of elastomeric materials selected from silicone rubber, segmented polyurethane, copolymers of silicone rubber, laminates of silicone rubber, and silicone rubber and polyurethane copolymers, and combinations thereof, and said textured surface being substantially free of pores or interstices such that said textured exterior surface substantially nonabsorbent to body fluids and being formed of a plurality of raised portions and indentations, wherein said raised portions are 0.0003 to 0.030 inches in height and 0.0003 to 0.10 inches in width;

an inner membrane formed of elastomeric material substantially impervious to body fluids, wherein said outer and inner membranes in combination form an enclosure; and

a filler material disposed within said enclosure.

19. The surgical prosthesis of claim 18 wherein said textured exterior surface is disposed over a substantial portion of said outer membrane.

20. The surgical prosthesis of claim 18 wherein said outer and inner membranes in combination comprises a shell comprising a major portion of said outer membrane, and a patch comprising a minor portion of said outer membrane wherein in combination said shell and said patch form a fluid impervious enclosure.

21. The surgical prosthesis of claim 20 wherein both the shell and the patch are texturized.

22. The surgical prosthesis of claim 18 wherein said texturized exterior surface is comprised of silicone rubber.

23. The surgical prosthesis of claim 18 wherein said outer membrane is substantially free of fibers.

24. The surgical prosthesis of claim 18 wherein said surgical prosthesis is a mammary implant.