US4840628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-enveloped gel prosthesis
Assignee: Individual
•
Filing: 1988-01-27
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Granted: 1989-06-20
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Expires: 2008-01-27
Abstract
Abstract An unconstrained cohesive gel prosthesis is disclosed for implantation in a human body. The prosthesis consist essentially of an unconstrained, pressure-disbursing, cohesive, homogenous gel which can be stretched substantially more then 21% of its length without the appearance of stress cracks.
Inventors
- 👤 Joseph F. Cavon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:05
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/28; A61L27/34; A61F; A61F2/00; A61F2/02; A61F2/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
92 words
An unconstrained cohesive gel prosthesis for implantation in a human body cavity normally substantially occupied by soft tissue consisting essentially of: an unconstrained molded pressure-dispersing cohesive homogeneous gel elastomer formed to fit the shape and size of a body cavity normally substantially occupied by soft tissue in the human body, the cohesion of said gel being such that it can be stretched substantially more than 21% of its length without the appearance of stress cracks in the gel, the gel being sufficiently cross linked so that the gel has a non-flowing characteristic.
Claim 2
Dependent Claim
92 words
An unconstrained cohesive gel prosthesis for implantation in a human body cavity normally substantially occupied by soft tissue consisting essentially of: an unconstrained molded pressure-dispersing cohesive homogeneous gel elastomer formed to fit the shape and size of a body cavity normally substantially occupied by soft tissue in the human body, the cohesion of said gel being such that it can be stretched substantially more than 21% of its length without the appearance of stress cracks in the gel, the gel being sufficiently cross linked so that the gel has a non-flowing characteristic.
Claim 3
Independent Claim
74 words
A method for avoiding post-surgical contracture of breast implants comprising the steps of filling a cavity normally occupied by breast tissue with an unconstrained molded pressure-dispersing cohesvie gel elastomer implant sized and shaped to fit the cavity, the gel being sufficiently cohesive so that it can be stretched substantially more than 21% of its length without the appearance of stress cracks in the gel, and being sufficiently cross linked to exhibit a non-flowing characteristic.
Claim 4
Independent Claim
74 words
A method for avoiding post-surgical contracture of breast implants comprising the steps of filling a cavity normally occupied by breast tissue with an unconstrained molded pressure-dispersing cohesvie gel elastomer implant sized and shaped to fit the cavity, the gel being sufficiently cohesive so that it can be stretched substantially more than 21% of its length without the appearance of stress cracks in the gel, and being sufficiently cross linked to exhibit a non-flowing characteristic.
References Cited (Backward Citations)
US4470208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-19 | 1992-12-19 | 1993-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-19 | 1996-12-19 | 1997-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-19 | 2000-12-19 | 2001-06-20 | $7700.00 | Window Closed / Lapsed |