Patent US4701230A successfully refreshed from Google Patents.
US4701230A
Expired / Lapsed
US
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Method for manufacturing a breast prosthesis
Assignee: NEARLY ME 2245 PONTIUS AVE LOS ANGELES CA 90064 A PARTNERSHIP CONSISTING OF RUTHTON Corp AND RUHA Inc
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Filing: 1985-07-18
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Granted: 1987-10-20
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Expires: 2005-07-18
Abstract
Abstract A method for fabricating breast prostheses in accordance with the invention includes the steps of forming an outer sheet to a concave configuration; forming an inner sheet to a concave configuration; bonding an intermediate sheet to a form member having a concave inner surface and a convex outer surface; sealing the inner sheet, intermediate sheet, and outer sheet together along their peripheries, thereby forming an outer chamber defined by the outer sheet and the intermediate sheet and an inner chamber defined by the intermediate sheet and the inner sheet, the inner chamber containing the form member; filling the outer chamber with uncured silicone gel; compressing the chamber to remove the air therefrom; placing the compressed chamber in a vacuum chamber to further remove any remaining air therefrom; sealing the chamber; and curing the liquid silicone into a gel.
Inventors
- 👤 Chay H. Loi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:04
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/50; A61F2/52; B; B29; B29C; B29C44/00; B29C44/02; B29C44/04; B29C44/0407; B29C44/12; A61F2/5044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
259 words
A method of forming a prosthesis comprising the steps of: providing a foam member having a convex and a concave surface; shaping an intermediate skin sheet of thin, flexible material and molding the intermediate skin sheet upon the convex surface of the foam member whereby the intermediate skin sheet adheres to the convex surface of the foam member; shaping an outer skin sheet of thin, flexible material on a mold of parti-cylindrical configuration corresponding to a human breast and having the desired exterior shape and appearance of the prosthesis; positioning the intermediate skin sheet and foam member combination within the outer skin sheet; shaping and positioning an inner skin sheet of thin flexible material in intimate contact with the concave surface of the foam member; sealing with the inner skin sheet, the foam member and intermediate skin sheet combination and the outer skin sheet together about the peripheries thereof, thereby forming a combination having a cavity defined by the intermediate skin sheet and the outer skin sheet; filling the cavity with a liquid through a passage in the outer skin sheet; removing any air trapped within the cavity; sealing the passage; curing the liquid into a gel; providing a mold for said foam member, and pouring and curing a foam material into the mold; and wherein the step of providing a foam member further includes the step of heating the mold prior to the pouring step, thereby causing that portion of the foam member adjacent to the mold to have greater porosity than the remainder thereof and less density.
Claim 2
Independent Claim
259 words
A method of forming a prosthesis comprising the steps of: providing a foam member having a convex and a concave surface; shaping an intermediate skin sheet of thin, flexible material and molding the intermediate skin sheet upon the convex surface of the foam member whereby the intermediate skin sheet adheres to the convex surface of the foam member; shaping an outer skin sheet of thin, flexible material on a mold of parti-cylindrical configuration corresponding to a human breast and having the desired exterior shape and appearance of the prosthesis; positioning the intermediate skin sheet and foam member combination within the outer skin sheet; shaping and positioning an inner skin sheet of thin flexible material in intimate contact with the concave surface of the foam member; sealing with the inner skin sheet, the foam member and intermediate skin sheet combination and the outer skin sheet together about the peripheries thereof, thereby forming a combination having a cavity defined by the intermediate skin sheet and the outer skin sheet; filling the cavity with a liquid through a passage in the outer skin sheet; removing any air trapped within the cavity; sealing the passage; curing the liquid into a gel; providing a mold for said foam member, and pouring and curing a foam material into the mold; and wherein the step of providing a foam member further includes the step of heating the mold prior to the pouring step, thereby causing that portion of the foam member adjacent to the mold to have greater porosity than the remainder thereof and less density.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-19 | 1991-04-20 | 1991-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-19 | 1995-04-20 | 1995-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-19 | 1999-04-20 | 1999-10-20 | $7700.00 | Window Closed / Lapsed |