US4768523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogel adhesive
Assignee: Lifecore Biomedical Inc
•
Filing: 1986-12-15
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Granted: 1988-09-06
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Expires: 2006-12-15
Abstract
Abstract An improved hydrogel adhesive, particularly adapted for adhesion and contact to tissue. It is especially useful in attaching electrical leads to tissue, for example in attaching pacemaker leads to the heart, interiorly or exteriorly.
Inventors
- 👤 Patrick T. Cahalan
- 👤 Allan H. Jevne
- 👤 Arthur J. Coury
- 👤 Michael J. Kallok
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:48
CPC Classifications
C; C08; C08J; C08J3/00; A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; C09; C09J; C09J141/00; C08J2333/00; C08J2333/24; C08J2333/26
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
52 words
A self-supporting hydrogel adhesive body consisting essentially of predetermined relative amounts of hydrogel polymer and water, the hydrogel polymer ranging from about 70% to about 98% by weight of hydrogel, balance consisting essentially of water, the polymer additionally containing an amount of a cross-linking agent ranging up to about 0.4 equivalent percent.
Claim 2
Dependent Claim
52 words
A self-supporting hydrogel adhesive body consisting essentially of predetermined relative amounts of hydrogel polymer and water, the hydrogel polymer ranging from about 70% to about 98% by weight of hydrogel, balance consisting essentially of water, the polymer additionally containing an amount of a cross-linking agent ranging up to about 0.4 equivalent percent.
Claim 3
Dependent Claim
20 words
The adhesive body of claim 1 wherein the polymer consists essentially of polymerized 2-acrylamido-2-methylpropanesulfonic acid or one of its salts.
Claim 4
Dependent Claim
20 words
The adhesive body of claim 1 wherein the polymer comprises copolymerized 2-acrylamido-2-methylpropanesulfonic acid or one of its salts and acrylamide.
Claim 5
Dependent Claim
21 words
The adhesive body of claim 1 wherein the polymer comprises copolymerized 2-acrylamido-2-methylpropanesulfonic acid or one of its salts and acrylic acid.
Claim 6
Dependent Claim
13 words
The adhesive body of claim 1 wherein the polymer comprises polymerized acrylic acid.
Claim 7
Dependent Claim
13 words
The adhesive body of claim 1 wherein the polymer comprises polymerized methacrylic acid.
Claim 8
Dependent Claim
16 words
The adhesive body of claim 1 wherein the polymer comprises copolymerized acrylic acid and methacrylic acid.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-06 | 1992-03-07 | 1992-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-06 | 1996-03-07 | 1996-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-06 | 2000-03-07 | 2000-09-06 | $7700.00 | Window Closed / Lapsed |