US5147398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple compartment breast prosthesis
Assignee: Individual
•
Filing: 1991-06-26
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Granted: 1992-09-15
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Expires: 2011-06-26
Abstract
Abstract An improved breast prosthesis for insertion under the sub-cutaneous tissue or muscle of the chest wall formed as a plurality of compartments each containing silicone gel or the like. The surface area to volume ratio of the apical compartment is smaller than the basilar one so that the appearance of projection is produced and pressure on the apex results in basilar deformation, reducing the perception of apical firmness. Preferably the skin is of PTFE possibly reducing capsular contractive and the perception of excessive firmness.
Inventors
- 👤 Lawrence A. Lynn
- 👤 Mark Foglietti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:24
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/12; A61L; A61L27/00; A61L27/14; A61L27/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
129 words
A breast prosthesis for insertion under subcutaneous tissue of a chest wall, the prosthesis comprising: an apical compartment having a relatively low surface area to volume ratio and adapted to be positioned relatively distally; a basilar compartment having a relatively high surface area to volume ratio and adapted to be positioned relatively proximally; said apical compartment and said basilar compartment are each filled with a single permanently deformable material and said apical and basilar compartments are mutually exclusive to one another; and outer housing means for positionally fixing said apical and basilar compartments with respect to one another and adapted to envelope said apical and basilar compartments, wherein the volume of said outer housing means is substantially equal to the combined volumes of said apical and said basilar compartments.
Claim 2
Dependent Claim
129 words
A breast prosthesis for insertion under subcutaneous tissue of a chest wall, the prosthesis comprising: an apical compartment having a relatively low surface area to volume ratio and adapted to be positioned relatively distally; a basilar compartment having a relatively high surface area to volume ratio and adapted to be positioned relatively proximally; said apical compartment and said basilar compartment are each filled with a single permanently deformable material and said apical and basilar compartments are mutually exclusive to one another; and outer housing means for positionally fixing said apical and basilar compartments with respect to one another and adapted to envelope said apical and basilar compartments, wherein the volume of said outer housing means is substantially equal to the combined volumes of said apical and said basilar compartments.
Claim 3
Dependent Claim
16 words
The breast prosthesis of claim 1, wherein said apical and basilar compartments share a common wall.
Claim 4
Dependent Claim
21 words
The breast prosthesis of claim 1, wherein said basilar compartment has a relatively larger volume with respect to said apical compartment.
Claim 5
Dependent Claim
14 words
The breast prosthesis of claim 1, wherein said outer housng means is porus polytetrafluoroethylene.
References Cited (Backward Citations)
FR2199266A5
Cited
US4650487A
Cited
US4298998A
Cited
US4605412A
Cited
US4648880A
Cited
US4820303A
Cited
US4733909A
Cited
US4790848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-15 | 1996-03-16 | 1996-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-15 | 2000-03-16 | 2000-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-15 | 2004-03-16 | 2004-09-15 | $7700.00 | Window Closed / Lapsed |