Patent US3852832A successfully refreshed from Google Patents.
US3852832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prosthesis with fixation means
Assignee: Mentor Worldwide LLC
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Filing: 1972-10-24
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Granted: 1974-12-10
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Expires: 1992-10-24
Abstract
Abstract A prosthesis for implantation in the human body to fill a cavity left by the removal of a portion of the anatomy or to change an existing body contour. The prosthesis has fixation means around which tissue will grow so as to hold the prosthesis in place. An optional flexible, inelastic loop provides temporary fixation until the tissue has grown around the fixation means. The fixation means can be made of a silicon elastomer, which is compatible with tissue. The fixation means may, for example, take the form of a perforated sheet-like body spaced from the exterior wall of the prothesis, or of a button-like body held by a stem to the exterior wall, or of a pair of overhanging flanges which form a key slot relative to the exterior wall.
Inventors
- 👤 D Mcghan
- 👤 J Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:56
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
172 words
IN COMBINATION: A FLEXIBLE AND PLIABLE PROSTHESIS HAVING AN EXTERIOR WALL, AND FIXATION MEANS COMPRISING A FLEXIBLE SHEETLIKE BODY ATTACHED TO THE EXTERIOR WALL AT THE EDGE OF THE BODY, THE AREA OF THE BODY AND THE AREA OF THAT PORTION OF THE EXTERIOR WALL IT COVERS BEING SUBSTANTIALLY EQUAL, THE BODY HAVING A FIRST SURFACE FACING AWAY FROM THE EXTERIOR WALL, A SECOND SURFACE FACING TOWARD THE EXTERIOR WALL, THE FIRST AND SECOND SURFACES BEING GENERALLY PARALLEL AND COMPRISING THE OPPOSITE SIDES OF THE BODY, AND A PLURALITY OF THIRD SURFACES JOINING THE FIRST AND SECOND SURFACES, THERE BEING A PLURALITY OF PERFORATIONS PASSING THROUGH THE BODY AND EXTENDING BETWEEN AND INTERCONNECTING THE FIRST AND SECOND SURFACES, EACH PERFORATION HAVING A SIDEWALL, EACH SIDEWALL FORMING A RESPECTIVE THIRD SURFACE, AND SPACER MEANS SPACING THE SECOND SURFACE FROM THE EXTERIOR WALL, WHEREBY THE SAID THREE SURFACES ARE CONTACTIBLE BY TISSUE WHICH WILL THEREBY EMBRACE PORTIONS OF THE BODY AND HOLD THE PROSTHESIS IN PLACE, SAID SURFACES BEING IMPERVIOUS TO INGROWTH OF TISSUE.
Claim 2
Dependent Claim
172 words
IN COMBINATION: A FLEXIBLE AND PLIABLE PROSTHESIS HAVING AN EXTERIOR WALL, AND FIXATION MEANS COMPRISING A FLEXIBLE SHEETLIKE BODY ATTACHED TO THE EXTERIOR WALL AT THE EDGE OF THE BODY, THE AREA OF THE BODY AND THE AREA OF THAT PORTION OF THE EXTERIOR WALL IT COVERS BEING SUBSTANTIALLY EQUAL, THE BODY HAVING A FIRST SURFACE FACING AWAY FROM THE EXTERIOR WALL, A SECOND SURFACE FACING TOWARD THE EXTERIOR WALL, THE FIRST AND SECOND SURFACES BEING GENERALLY PARALLEL AND COMPRISING THE OPPOSITE SIDES OF THE BODY, AND A PLURALITY OF THIRD SURFACES JOINING THE FIRST AND SECOND SURFACES, THERE BEING A PLURALITY OF PERFORATIONS PASSING THROUGH THE BODY AND EXTENDING BETWEEN AND INTERCONNECTING THE FIRST AND SECOND SURFACES, EACH PERFORATION HAVING A SIDEWALL, EACH SIDEWALL FORMING A RESPECTIVE THIRD SURFACE, AND SPACER MEANS SPACING THE SECOND SURFACE FROM THE EXTERIOR WALL, WHEREBY THE SAID THREE SURFACES ARE CONTACTIBLE BY TISSUE WHICH WILL THEREBY EMBRACE PORTIONS OF THE BODY AND HOLD THE PROSTHESIS IN PLACE, SAID SURFACES BEING IMPERVIOUS TO INGROWTH OF TISSUE.
Claim 3
Dependent Claim
34 words
A combination according to claim 1 in which a plurality of rows of said perforations is formed in the body, and in which a plurality of said bodies is attached to the exterior wall.
Claim 4
Dependent Claim
16 words
A combination according to claim 1 in which the fixation means is made of silicone elastomer.
Claim 5
Dependent Claim
16 words
A combination according to claim 2 in which the fixation means is made of silicone elastomer.
Claim 6
Dependent Claim
32 words
A combination according to claim 1 in which a flexible, relatively inelastic loop is connected to the prosthesis for the purpose of being sutured in place for initial support of the prosthesis.
Claim 7
Dependent Claim
34 words
A combination according to claim 5 in which a plurality of rows of said perforations is formed in the body, and in which a plurality of said bodies is attached to the exterior wall.
Claim 8
Dependent Claim
16 words
A combination according to claim 5 in which the fixation means is made of silicone elastomer.
Claim 9
Dependent Claim
16 words
A combination according to claim 6 in which the fixation means is made of silicone elastomer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |