US4666447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skin expansion device and method of making the same
Assignee: Mentor Worldwide LLC
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Filing: 1985-01-30
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Granted: 1987-05-19
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Expires: 2005-01-30
Abstract
Abstract An improved skin expansion device includes an inflatable envelope fluidly connected through a base thicker than the envelope to a conduit in fluid connection with an injection chamber. The base fluidly connects the conduit to the inflatable envelope through at least one fluid channel extending between a position proximate the perimeter of the base to an inwardly disposed location in fluid communication with the interior of the inflatable envelope. The conduit is connected to the base along the perimeter and in fluid communication with the fluid channel.
Inventors
- 👤 Gregory M. Smith
- 👤 Frederick L. Coe
- 👤 Ray H. Dormandy, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:33
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/12; A61B; A61B90/00; A61B90/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
158 words
An improved implantable expansion device having an inflatable envelope with a fluid retaining interior for implantation, the envelope being fluidly connected by a fill tube to a remote implantable injection site, the improvement comprising: said envelope being fixedly attached to a substantially non-extensible base having a base perimeter and said base having a tongue portion extending beyond said base perimeter said fluid retaining, the channel being formed in said base and extending from said opening through the base to a position proximate a perimeter of the base into said tongue portion and fluidly connectable to the injection site from the position proximate the perimeter so that inflating fluid flows between the injection site through the fill tube into said tongue portion through said channel and said opening and into the interior of the envelope, such that when the envelope is inflated after implantation, the base and the fill tube remain in substantially the same plane as when implanted.
Claim 2
Dependent Claim
158 words
An improved implantable expansion device having an inflatable envelope with a fluid retaining interior for implantation, the envelope being fluidly connected by a fill tube to a remote implantable injection site, the improvement comprising: said envelope being fixedly attached to a substantially non-extensible base having a base perimeter and said base having a tongue portion extending beyond said base perimeter said fluid retaining, the channel being formed in said base and extending from said opening through the base to a position proximate a perimeter of the base into said tongue portion and fluidly connectable to the injection site from the position proximate the perimeter so that inflating fluid flows between the injection site through the fill tube into said tongue portion through said channel and said opening and into the interior of the envelope, such that when the envelope is inflated after implantation, the base and the fill tube remain in substantially the same plane as when implanted.
Claim 3
Dependent Claim
14 words
The device of claim 1 wherein the base includes a plurality of fluid channels.
Claim 4
Dependent Claim
53 words
The device of claim 2 wherein the fluid channels have first ends disposed inwardly in the base and the envelope has an aperture in fluid communication with the second ends of the fluid channels and means for preventing occlusion positioned proximate the aperture to prevent the envelope from occluding the aperture during deflation.
Claim 5
Dependent Claim
32 words
The device of claim 3 wherein the means for preventing occlusion includes at least two spaced-apart sections of sheet material secured to the bottom wall portion of the envelope proximate the aperture.
Claim 6
Dependent Claim
150 words
An improved implantable expansion device having an inflatable envelope with a fluid retaining interior for implantation, the envelope being in fluid communication with an injection site, the improvement comprising: said envelope being fixedly attached to a substantially non-extensible base having a base perimeter, and said base having a tongue portion extending beyond said base perimeter; said base having at least one fluid channel with an opening communicating with said fluid retaining interior, said channel being formed in said base and extending from said opening through said base into said tongue portion and fluidly connectable to the injection site from a position proximate said base perimeter so that inflating fluid-flows between the injection site through a fill tube into said tongue portion through said channel and said opening into the interior of the envelope, and means for positioned proximate said opening for preventing the envelope from occluding the opening during inflation.
Claim 7
Dependent Claim
150 words
An improved implantable expansion device having an inflatable envelope with a fluid retaining interior for implantation, the envelope being in fluid communication with an injection site, the improvement comprising: said envelope being fixedly attached to a substantially non-extensible base having a base perimeter, and said base having a tongue portion extending beyond said base perimeter; said base having at least one fluid channel with an opening communicating with said fluid retaining interior, said channel being formed in said base and extending from said opening through said base into said tongue portion and fluidly connectable to the injection site from a position proximate said base perimeter so that inflating fluid-flows between the injection site through a fill tube into said tongue portion through said channel and said opening into the interior of the envelope, and means for positioned proximate said opening for preventing the envelope from occluding the opening during inflation.
Claim 8
Dependent Claim
32 words
The device of claim 5 wherein the means for preventing occlusion includes at least two spaced-apart sections of sheet material secured to the bottom wall portion of the envelope proximate the opening.
References Cited (Backward Citations)
US2824775A
Cited
US3663968A
Cited
US3600718A
Cited
US3860969A
Cited
US3852833A
Cited
US3883902A
Cited
US4217889A
Cited
US4095295A
Cited
US4178643A
Cited
US4190040A
Cited
US4263682A
Cited
US4428364A
Cited
US4299227A
Cited
US4312353A
Cited
US4309776A
Cited
US4459318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-18 | 1990-11-17 | 1991-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-18 | 1994-11-17 | 1995-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-18 | 1998-11-17 | 1999-05-19 | $7700.00 | Window Closed / Lapsed |