Breast prosthesis with filling valve

• US 4,428,082 A
• Filed: 11/05/1981
• Issued: 01/31/1984
• Est. Priority Date: 12/08/1980
• Status: Expired due to Fees

• Current Assignee: Sadeque S. Naficy
• Original Assignee: Sadeque S. Naficy
• Inventors: Naficy, Sadeque S.
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): ISABELLA, DAVID J
• Application Number:
  US06/318,582
• Time in Patent Office: 817 Days
• Field of Search: 3/36
• US Class Current: 623/8
• CPC Class Codes: A61F 2/12 Mammary prostheses and implants

Abstract

A newly developed breast prosthesis overcomes the tightness and contracture of the fibrous capsule which forms around the existing prostheses. This prosthesis is constructed with an outer temporary component and an inner permanent component. The inner component is a fluid- or gel-filled container or sac of a flexible, non-absorbable material. The temporary outer component is a container or cover of a material which is absorbable under the conditions of use, and an inert filler material, preferably an absorbable, biologically acceptable liquid, e.g. saline solution, filling the space between the inner and outer components which is added through a valve or tube in the outer cover either at the time of manufacture or at the time of implantation. The inner component is preferably of silicone rubber film and is filled with a silicone gel. The outer portion is in the form of a sheet, film or coating of a material which can be absorbed in the body after surgical implantation. The filling valve or tube is also of an absorbable material. Suitable materials are ones which will be absorbed by phagocytosis or hydrolysis or other processes or which can be rendered absorbable by physical or chemical or enzymatic treatment or the like, prior to, during, or after surgical implantation. These materials include natural, synthetic or semisynthetic materials proven useful for surgical sutures and materials such as reconstituted collagen, polylactic acid, polyglycolic acid, polyglactin 910, reconstituted vegetable protein, etc.

Claims

1. A breast prosthesis comprising

an inner coherent core of biologically compatible, non-absorbable material,

an outer container of a flexible absorbable material spaced from said core, and

filling means on said outer container, of an absorbable material, for introduction of an inert liquid to fill the space between said outer container and said core.

2. A breast prosthesis according to claim 1 in which

said filling means comprises a flexible filling tube and a tie, both of an absorbable material.

3. A breast prosthesis according to claim 1 in which

said filling means comprises a valve member of an absorbable material.

4. A breast prosthesis according to claim 3 in which

said valve member comprises a flexible filling tube and a flap valve, both of an absorbable material.

5. A breast prosthesis according to claim 3 in which

said valve member comprises a patch-type check valve of an absorbable material.

6. A breast prosthesis according to claim 1 in which

said absorbable material is a material selected from the group consisting of materials which are absorbed by hydrolysis, materials which are absorbed by phagocytosis and materials which are absorbed by enzymatic decomposition.

7. A breast prosthesis according to claim 1 in which

said filling means is formed of a moldable absorbable material.

8. A breast prosthesis according to claim 1 in which

said outer container comprises a film of a natural or synthetic or semisynthetic absorbable material.

9. A breast prosthesis according to claim 1 in which

said outer container comprises a film of a material selected from the group consisting of catgut, chromic gut, reconstituted animal collagen, reconstituted vegetable protein, absorbable carbohydrate polymers, and absorbable synthetic or semisynthetic polymers.

10. A breast prosthesis according to claim 1 in which

said outer container comprises a film of an absorbable polymer of cellulose or amylose or derivatives thereof.

11. A breast prosthesis according to claim 9 in which

said film is an absorbable polyester of a dibasic acid.

12. A breast prosthesis according to claim 11 in which

said film is an absorbable condensation polymer of a hydroxycarboxylic acid.

13. A breast prosthesis according to claim 12 in which

said polymer is polyglycolic acid or polyglactin 910.

14. A breast prosthesis according to claim 1 in which

said inner core comprises an inner container of a biologically compatible non-absorbable film enclosing a quantity of fluid material.

15. A breast prosthesis according to claim 14 in which

said fluid material in said inner container is a biologically compatible liquid.

16. A breast prosthesis according to claim 14 in which

said fluid material in said inner container is a gel material.

17. A breast prosthesis according to claim 14 in which

said inner core comprises a container of silicone rubber film enclosing a quantity of silicone gel.