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12/08/05 - USPTO Class 623 | 66 views | #20050273164 | Prev - Next | About this Page

Two-layer external breast prosthesis with self-shaping feature and process for the manufacture thereof

Title: Two-layer external breast prosthesis with self-shaping feature and process for the manufacture thereof

Related Patent Categories: Prosthesis (i.e., Artificial Body Members), Parts Thereof, Or Aids And Accessories Therefor, Breast Prosthesis

Brief Patent Description - Full Patent Description - Patent Claims

The Patent Description & Claims data below is from USPTO Patent Application 20050273164, Two-layer external breast prosthesis with self-shaping feature and process for the manufacture thereof.

What is claimed is:

1. A two-layer external breast prosthesis, comprising: a) a first inner layer comprised of a self-shaping dispersion, said dispersion having a specific gravity of less than 1.0; and b) a second outer layer comprised of an elastic material, wherein said second outer layer is stiffer than said first inner layer.

2. The prosthesis of claim 1, wherein the elastic material of said second outer layer comprises a silicon gel.

3. The prosthesis of claim 1, wherein the elastic material of said second outer layer is heat cured.

4. The prosthesis of claim 1, wherein the self-shaping dispersion of said first inner layer is uncured and comprised of a silicone oil and a plurality of microspheres.

5. The prosthesis of claim 4, wherein the silicone oil has a viscosity of approximately 500 CSt.

6. The prosthesis of claim 4, wherein the plurality of microspheres are comprised of an acrylonitrile copolymer and have an average particle size of from approximately 40 microns to approximately 125 microns.

7. The prosthesis of claim 1, further comprising a film wall separating said inner layer and said outer layer.

8. The prosthesis of claim 1, wherein said inner layer is confined within a first film envelope, and wherein said outer layer is confined within a second film envelope.

9. The prosthesis of claim 8, wherein the said first and second film envelopes share a common film wall therebetween.

10. The prosthesis of claim 8, wherein said first and said second film envelopes each comprise a polyurethane film.

11. The prosthesis of claim 1, wherein said inner layer is confined within a first film envelope and is sufficiently soft to yield to the touch, and wherein said outer layer is sufficiently stiff to substantially prevent wrinkling of a second film envelope confining said outer layer.

12. The prosthesis of claim 1, wherein said outer layer is sufficiently stiff to generally retain the shape of a human breast.

13. A two-layer breast prosthesis, comprising: a) a first film envelope configured to define a first interior volume; b) a second film envelope joined to the first film envelope along a common side edge to thereby define a second interior volume wherein said second film envelope and first film envelope share a common film wall; c) a first and a second sealed fill opening, respectively, extending from the common side edge of the first film envelope and the second film envelope to the respective first and second interior volumes; d) a first material within said first film envelope forming an interior body portion of the prosthesis, said first material comprising a self-shaping material; and e) a second material within said second film envelope forming an exterior body portion of the prosthesis, said second material comprising an elastic material.

14. The prosthesis of claim 13, wherein the self-shaping material of d) is a self-shaping dispersion comprised of a silicone oil and a plurality of microspheres.

15. The prosthesis of claim 13, wherein said self-shaping material of d) is constructed and arranged to be yieldably shaped by a patient's chest wall.

16. The prosthesis of claim 14, wherein the respective plurality of microspheres have an average particle size of from 40 microns to 125 microns.

17. The prosthesis of claim 14, wherein said microspheres are comprised of an acrylonitrile copolymer.

18. The prosthesis of claim 14, wherein said microspheres are filled with isobutane.

19. The prosthesis of claim 13, wherein the first material of d) has a specific gravity less than approximately 1.

Brief Patent Description - Full Patent Description - Patent Claims

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Intraocular lens system
Next Patent Application:
Soft tissue spacer
Industry Class:
Prosthesis (i.e., artificial body members), parts thereof, or aids and accessories therefor

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