US5085632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter and method for the manufacture thereof
Assignee: JMS Co Ltd
•
Filing: 1990-04-10
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Granted: 1992-02-04
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Expires: 2010-04-10
Abstract
Abstract A catheter is provided which can be safely implanted in the living body for extended periods of time. At least that portion of the catheter which contacts the tissue comprises a cuff of porous material which is made of a vinyl alcohol polymer to which, preferably, collagen has been chemically grafted.
Inventors
- 👤 Yoshito Ikada
- 👤 Toshiyuki Okada
- 👤 Tatsuya Kawai
- 👤 Michiaki Yoshimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:07
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/0247; A61M25/00; A61M25/0017; A61M25/01; A61M25/02; A61M1/00; A61M1/14; A61M1/28; A61M1/285; A61M2025/0293
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
40 words
A catheter comprising a tube and a cuff provided around the circumference of said tube, wherein the cuff comprises a porous material consisting essentially of a vinyl alcohol polymer having collagen chemically grafted to the surface of the porous material.
Claim 2
Dependent Claim
40 words
A catheter comprising a tube and a cuff provided around the circumference of said tube, wherein the cuff comprises a porous material consisting essentially of a vinyl alcohol polymer having collagen chemically grafted to the surface of the porous material.
Claim 3
Dependent Claim
24 words
A catheter as defined in claim 1, wherein the average pore size of said porous material ranges from about 100 to about 400 μm.
Claim 4
Dependent Claim
24 words
A catheter as defined in claim 2, wherein the average pore size of said porous material ranges from about 100 to about 200 μm.
Claim 5
Dependent Claim
24 words
A catheter as defined in claim 1, wherein the collagen is present in an amount of at least about 10 μg/gm of porous material.
Claim 6
Dependent Claim
24 words
A catheter as defined in claim 1, wherein the average pore size of the porous material ranges from about 100 to about 400 μm.
References Cited (Backward Citations)
US3808113A
Cited
US4167045A
Cited
JPS54119798A
Cited
US4378803A
Cited
US4266999A
Cited
US4373009A
Cited
US4743258A
Cited
US4784659A
Cited
US4979959A
Cited
US4871361A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-03 | 1995-08-05 | 1996-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-03 | 1999-08-05 | 2000-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-03 | 2003-08-05 | 2004-02-04 | $7700.00 | Window Closed / Lapsed |