SILICONE IMPLANT WITH IMPRINTED TEXTURE

• US 20120041555A1
• Filed: 09/26/2011
• Published: 02/16/2012
• Est. Priority Date: 05/10/2010
• Status: Abandoned Application

• Current Assignee: Allergan, Inc. (Canada) (Abbvie Incorporated)
• Original Assignee: Allergan, Inc. (Canada) (Abbvie Incorporated)
• Inventors: Manesis, Nicholas J., Liu, Futian
• Application Number:
  US13/245,518
• Publication Number:
  US 20120041555A1
• Time in Patent Office: Days
• US Class Current: 623/8
• CPC Class Codes: A61F 2/12 Mammary prostheses and implants
• CPC Class Codes: A61L 2430/04 for mammary reconstruction
• CPC Class Codes: A61L 27/18 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: B29C 41/14 Dipping a core B29C41/10 takes precedence
• CPC Class Codes: B29C 41/20 incorporating preformed parts or layers, e.g. moulding inserts or for coating articles
• CPC Class Codes: B29K 2995/0074 patterned, grained
• CPC Class Codes: C08L 83/04 Polysiloxanes

Abstract

A procedure for making an implant having a textured silicone surface is disclosed. The method may include the steps of providing a conventional mandrel and applying a pre-formed, polymeric mesh sock to the mandrel. The sock is contacted with a silicone dispersion and the silicone dispersion is at least partially cured with the sock in contact therewith. The silicone dispersion is at least partially cured while the sock is in contact therewith and the sock is them removed, for example, by dissolution, to leave a textured elastomeric material useful as a component of a breast implant shell.

Claims

1. A method of making a textured component of a breast implant shell, the method comprising the steps of:

providing a mandrel;

applying a polymeric mesh sock to the mandrel;

contacting the sock with a silicone dispersion;

at least partially curing the silicone dispersion to form a silicone elastomer with the sock in contact therewith; and

after the silicone is at least partially cured, removing the sock from the silicone elastomer to thereby form a textured component of a breast implant shell.

2. The method of claim 1 further comprising applying at least one additional polymeric mesh sock onto the mandrel prior to the step of at least partially curing.

3. The method of claim 1 wherein the step of contacting the sock with a silicone dispersion is performed after the step of applying the sock.

4. The method of claim 1, wherein the sock is comprised of at least one of Vicryl 910, poly (L-lactic acid-co-trimethylcarbonate), polycaprolactone, poly(L-lactic acid), poly(methyl methacrylate) and poly(lactic-co-glycolic acid).

5. The method of claim 1, wherein the sock is comprised of poly(L-lactic acid.

6. The method of claim 1, wherein the step of removing the sock comprises contacting the sock with a solvent capable of dissolving the sock.

7. The method of claim 1, wherein the step of removing the sock from the silicone elastomer comprises contacting the sock with an organic solvent selected from methylene chloride, chloroform, acetone, tetrahydrofuran and combinations thereof.

8. The method of claim 2, wherein the sock comprises a mesh including a plurality of eyes having an average size between about 100 μ

m×

100 μ

m to about 2000 μ

m×

2000 μ

m.

9. A component of a breast implant shell made by the method of claim 1.

10. A breast implant, comprising:

a silicone shell having an inner surface, defining a cavity configured to be filled with a filler material, and a textured outer surface, the shell made by the steps of

providing a mandrel;

applying a polymeric mesh sock to the mandrel;

contacting the sock with a silicone dispersion;

at least partially curing the silicone dispersion to form a silicone elastomer with the sock in contact therewith; and

after the silicone is at least partially cured, removing the sock from the silicone elastomer to obtain a textured silicone material;

forming the textured silicone material into a shell of a breast implant.

11. The implant of claim 10 wherein the steps further comprise applying at least one additional polymeric mesh sock onto the mandrel prior to the step of at least partially curing.

12. The implant of claim 10 wherein the step of contacting the sock with the silicone dispersion is performed after the step of applying the sock.

13. The implant of claim 10, wherein the sock is comprised of at least one of Vicryl 910, poly (L-lactic acid-co-trimethylcarbonate), polycaprolactone, poly(L-lactic acid), poly(methyl methacrylate) and poly(lactic-co-glycolic acid).

14. The implant of claim 10 wherein the sock is comprised of poly(L-lactic acid.

15. The implant of claim 10, wherein the step of removing the sock comprises applying to the sock a solvent capable of dissolving the sock.

16. The implant of claim 10, wherein the step of removing the sock comprises contacting the sock with an organic solvent selected from methylene chloride, chloroform, acetone, tetrahydrofuran and combinations thereof.

17. The implant of claim 10, wherein the sock comprises a mesh including a plurality of eyes having an average size between about 100 μ

m×

100 μ

m to about 2000 μ

m×

2000 μ

m.