Patent US3919724A successfully refreshed from Google Patents.
US3919724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implantable prosthesis having a self-sealing valve
Assignee: Medical Engineering Corp
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Filing: 1974-06-07
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Granted: 1975-11-18
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Expires: 1994-06-07
Abstract
Abstract An implantable breast prosthesis including a flexible container formed from a medical grade of silicone elastomer, a self-sealing valve provided on the inside surface of the container, the valve being formed of a self-sealing gel and including sufficient barium sulfate, bismuth subcarbonate or tantalum powder so that the valve is radiopaque for easy location after implanting in the body, and an injection assembly for inflating the container with a fluid after implantation in the body, said assembly including a catheter for penetrating the valve and a syringe for injecting into or removing fluid from the container through the catheter, the fluid comprising either a saline solution or a gel. The selfsealing gel can also be used as a valve for a catheter or in a fistula for hemodialysis.
Inventors
- 👤 David H Sanders
- 👤 Henry W Lynch
- 👤 Sennen Uy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:25
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/12; A61F2250/00; A61F2250/0058; A61F2250/0096; A61F2250/0098
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
86 words
An implantable prosthesis comprising a flexible container having the shape of a breast, a self-sealing valve provided on the inside surface of said container, a shell formed from a flexible medical grade material, a self-sealing gel completely filling said shell, a radiopaque material being combined with said gel, a fluid in said container, and means for injecting and withdrawing said fluid through said valve into or out of said container said radiopaque material being selected from the group consisting of barium sulfate, bismuth subcarbonate and tantalum.
Claim 2
Dependent Claim
86 words
An implantable prosthesis comprising a flexible container having the shape of a breast, a self-sealing valve provided on the inside surface of said container, a shell formed from a flexible medical grade material, a self-sealing gel completely filling said shell, a radiopaque material being combined with said gel, a fluid in said container, and means for injecting and withdrawing said fluid through said valve into or out of said container said radiopaque material being selected from the group consisting of barium sulfate, bismuth subcarbonate and tantalum.
Claim 3
Dependent Claim
13 words
The prosthesis according to claim 1 wherein said fluid is a saline solution.
Claim 4
Dependent Claim
46 words
AN IMPLANTABLE BREAST PROSHESIS COMPRISING A FLEXIBLE CONTAINER HAVING THE SHAPE OF A HUMAN BREAST, A SELF-SEALING VALVE PROVIDED ON THE EDGE OF THE INSIDE SURFACE OF THE CONTAINER, SAID VALVE INCLUDING A SHELL OF ORGANOSILOXANE COPOLYMER MATERIAL, A SELF-SEALING GEL COMPLETELY FILING SAID SHELL AND
Claim 5
Dependent Claim
46 words
AN IMPLANTABLE BREAST PROSHESIS COMPRISING A FLEXIBLE CONTAINER HAVING THE SHAPE OF A HUMAN BREAST, A SELF-SEALING VALVE PROVIDED ON THE EDGE OF THE INSIDE SURFACE OF THE CONTAINER, SAID VALVE INCLUDING A SHELL OF ORGANOSILOXANE COPOLYMER MATERIAL, A SELF-SEALING GEL COMPLETELY FILING SAID SHELL AND
Claim 6
Dependent Claim
50 words
A self-sealing valve for admitting gaseous and fluid mediums into an implantable breast prosthesis after implantation of the prosthesis in the human body, said valve including a shell formed from a flexible medical grade material, a self-sealing gel filling said shell and a radiopaque material combined with said self-sealing gel.
Claim 7
Dependent Claim
50 words
A self-sealing valve for admitting gaseous and fluid mediums into an implantable breast prosthesis after implantation of the prosthesis in the human body, said valve including a shell formed from a flexible medical grade material, a self-sealing gel filling said shell and a radiopaque material combined with said self-sealing gel.
References Cited (Backward Citations)
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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) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |