Prosthetic tissue implant and filler therefor

• US 6,099,565 A
• Filed: 06/07/1995
• Issued: 08/08/2000
• Est. Priority Date: 06/07/1995
• Status: Expired due to Term

• Current Assignee: Sakura, Chester Y. Jr.
• Original Assignee: Sakura, Chester Y. Jr.
• Inventors: Sakura, Chester Y. Jr.
• Primary Examiner(s): Isabella, David J.
• Application Number:
  US08/478,277
• Time in Patent Office: 1,889 Days
• Field of Search: 623/11, 623/12, 623/7, 623/8, 623/66, 623/37, 623/36, 623/17
• US Class Current: 623/8
• CPC Class Codes: A61F 2/12 Mammary prostheses and implants

Abstract

A biologically compatible human breast implant is disclosed which has improved natural feel and is resistant to leakage. In the disclosed implant, a large quantity of small, pliable hollow spheroids of polymeric material are used as a filler within the implant shell. The hollow spheroids are partially filled with a fluid when in an uncompressed state, and provide a cushioning effect by being compressible to the point where the resulting reduction in the interior space causes the interior to become essentially filled by the fluid and where further compression is resisted due to the relative non-compressibility of the contained fluid. The described spheroids are made of silicone rubber and are partially filled with saline solution. The spheroids have an outside diameter of from about 1 mm to 5 mm, an outer wall thickness of about 75 to 225 microns, and the fluid contained therein is filled to about 80 to 90% of capacity when the spheroids are in their naturally uncompressed spherical state.

Claims

1. A prosthetic human breast implant, comprising:

an outer shell of polymeric material having a cavity therein, said outer shell being sized and shaped for augmenting, reshaping or replacing human breast tissue;

a plurality of hollow bodies of biologically compatible elastically deformable material contained within said cavity, each of said hollow bodies containing biologically compatible liquid material sealed therein, each of said hollow bodies being partially filled with said fluid when in an uncompressed state, wherein said bodies are elastically compressible to the extent where the resulting reduction in the interior space within said hollow bodies causes the interior to become essentially filled by said fluid and where further compression is resisted due to the relative non-compressibility of the contained fluid.

2. The prosthetic human breast implant of claim 1 in which said hollow bodies are generally spheroidal in shape when in an uncompressed state.

3. The prosthetic human breast implant of claim 1 wherein each of said hollow bodies are partially filled in the range of 80-90% of capacity by said fluid when in an uncompressed state.

4. The prosthetic human breast implant of claim 1, wherein said hollow bodies are made of silicone rubber.

5. The prosthetic human breast implant of claim 1, wherein said liquid material is saline solution.

6. The prosthetic human breast implant of claim 1, wherein said hollow bodies have an outside diameter in the range of from about 1 mm to 5 mm.

7. The prosthetic human breast implant of claim 1, wherein said hollow bodies have a wall thickness in the range of about 75 to 250 microns.

8. The prosthetic human breast implant of claim 1, wherein said hollow bodies are spherical in shape when in an uncompressed state.

9. A prosthetic implant, comprising:

an outer shell of polymeric material having a cavity therein; and

filler contained within said cavity in said outer shell, said filler including a plurality of hollow structured bodies of biologically compatible elastically compressible material, each of said bodies containing biologically compatible liquid material sealed therein and being partially filled with said liquid material leaving interior space within said bodies unfilled by said liquid material when said bodies are in an uncompressed state, wherein said bodies are elastically compressible to the extent where the resulting reduction in the interior space within said bodies causes the interior to become essentially filled by said liquid material and where further compression is resisted due to the relative non-compressibility of the contained liquid material;

further wherein said hollow bodies are generally spherical in shape when in an uncompressed state.

10. The prosthetic implant of claim 9, wherein each of said hollow bodies are filled in the range of 80-90% of capacity by said fluid when in an uncompressed state.

11. The prosthetic implant of claim 9, wherein said hollow bodies are made of silicone rubber.

12. The prosthetic implant of claim 9, wherein said liquid material is saline solution.

13. The prosthetic implant of claim 9, wherein said hollow bodies have an outside diameter in the range of 1 mm to 5 mm.

14. The prosthetic implant of claim 9, wherein said hollow bodies have an outside diameter in the range of from about 2 mm to 4 mm.

15. The prosthetic implant of claim 9, wherein said hollow bodies have a thickness in the range of about 75 to 250 microns.

16. Filler for a prosthetic implant comprising hollow spheroids of biologically compatible elastically deformable material each containing biologically compatible liquid material sealed therein, each of said spheroids being partially filled with said fluid when in an uncompressed state, wherein said spheroids are elastically compressible to the extent where the resulting reduction in the interior space within said spheroids causes the interior to become essentially filled by said fluid and where further compression is resisted due to the relative non-compressibility of the contained fluid.

17. The prosthetic implant filler of claim 16 wherein each of said spheroids are partially filled in the range of 80-90% of capacity by said fluid when in an uncompressed state.

18. The prosthetic implant filler of claim 16, wherein said spheroids are made of silicone rubber.

19. The prosthetic implant filler of claim 16, wherein said liquid material is saline solution.

20. The prosthetic implant of claim 16, wherein said hollow bodies have an outside diameter in the range of 1 mm to 5 mm.

21. The prosthetic implant filler of claim 16, wherein said spheroids have a wall thickness in the range of about 75 to 225 microns.

22. The prosthetic implant filler of claim 16, wherein said hollow spheroids are spherical in shape when in an uncompressed state.

23. Filler for a prosthetic implant comprising a plurality of hollow structured bodies of biologically compatible elastically compressible material, each of said bodies containing biologically compatible liquid material sealed therein being partially filled with said liquid material leaving interior space within said bodies unfilled by said liquid material when said bodies are in an uncompressed state, wherein said bodies are elastically compressible to the extent where the resulting reduction in the interior space within said bodies causes the interior to become essentially filled by the liquid material and where further compression is resisted due to the relative non-compressibility of the contained liquid material;

further wherein said hollow bodies have an outside diameter in a range of about 1 mm to about 5 mm.

24. The prosthetic implant filler of claim 23 wherein each of said hollow bodies are partially filled in the range of 80-90% of capacity by said fluid when in an uncompressed state.

25. The prosthetic implant filler of claim 23, wherein said hollow bodies are made of silicone rubber.

26. The prosthetic implant filler of claim 23, wherein said liquid material is saline solution.

27. The prosthetic implant of claim 23, wherein said hollow bodies have a wall thickness in the range of about 75 to 225 microns.

28. The prosthetic implant of claim 23, wherein said hollow bodies have an outside diameter in the range of from about 2 mm to 4 mm.