US4810246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable cell culture chamber with remote access
Assignee: L Vad Technology Inc
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Filing: 1987-11-04
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Granted: 1989-03-07
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Expires: 2007-11-04
Abstract
Abstract A combination is provided of a percutaneous lead designed for implantation in the human body, which lead has a surface which is adapted to pass through and be exposed to the dermis of a patient when the device is implanted. Said surface is adapted to receive the growth of a cultured autogenous fibroblast coating on an etched, nanoporous surface. A liquid tight sealed removable, disposable chamber encloses said surface, said chamber being provided with openings for introduction therein of finely divided living dermal tissue suspended in a liquid carrier, thus providing a means for formation of the cultured surfaces which can be easily handled. The disposable chamber is removed and discarded at the time of surgery.
Inventors
- 👤 Eldon E. Frisch
- 👤 Adrian Kantrowitz
- 👤 Paul S. Freed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:52
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/0247; A61M2039/0261; A61M2039/0291
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
118 words
In combination: A. a percutaneous access device designed for implantation in the human body, said device having a component adapted to extend through the skin to provide access from outside of the body to a subcutaneous location within the body and having a peridermal component with a surface which is adapted to be implanted immediately beneath the dermis of a patient, said surface having a porous texture and thus being adapted to receive the growth thereon of a cultured autogenous fibroblast coating thereon, and B. a liquid tight sealed removable, disposable chamber enclosing said surface, said chamber being provided with a remotely accessible opening for introduction therein of finely divided living dermal tissue suspended in a liquid carrier.
Claim 2
Dependent Claim
118 words
In combination: A. a percutaneous access device designed for implantation in the human body, said device having a component adapted to extend through the skin to provide access from outside of the body to a subcutaneous location within the body and having a peridermal component with a surface which is adapted to be implanted immediately beneath the dermis of a patient, said surface having a porous texture and thus being adapted to receive the growth thereon of a cultured autogenous fibroblast coating thereon, and B. a liquid tight sealed removable, disposable chamber enclosing said surface, said chamber being provided with a remotely accessible opening for introduction therein of finely divided living dermal tissue suspended in a liquid carrier.
Claim 3
Dependent Claim
15 words
A device according to claim 1 wherein said chamber is formed of a silicone elastomer.
Claim 4
Dependent Claim
32 words
A device according to claim 1 wherein a tube is provided through said opening for addition of said dermal tissue and a second tube is provided to permit venting of said chamber.
Claim 5
Dependent Claim
11 words
A device according to claim 1 wherein said surface is nanoporous.
Claim 6
Dependent Claim
51 words
A device according to claim 1 wherein said component is a conduit attached to the top thereof adapted to extend exteriorly of the body of the patient and a conduit tube in fluid communication therewith extending from the bottom thereof which is adapted to be surgically implanted within the patients body.
Claim 7
Dependent Claim
47 words
A device according to claim 5 wherein a sterile plastic container surrounds said chamber and said catheters, said container being hermetically enclosed with the exception of an opening through which a tube connected to the opening in the chamber extends for addition of a dermal tissue suspension.
References Cited (Backward Citations)
US4605007A
Cited
US4634422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-06 | 1992-09-05 | 1993-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-06 | 1996-09-05 | 1997-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-06 | 2000-09-05 | 2001-03-07 | $7700.00 | Window Closed / Lapsed |