US4769013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bio-effecting medical material and device
Assignee: Hydromer Inc
•
Filing: 1986-06-04
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Granted: 1988-09-06
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Expires: 2006-06-04
Abstract
Abstract A medical material comprising a polyurethane complexed with polyvinylpyrrolidone and a bio-effecting agent, such as an anti-bacterial agent, complexed with the polyvinylpyrrolidone. The material is used per se as, for example a foam, and as a coating for medical devices such as, for example, catheters and wound drainage tubes.
Inventors
- 👤 Donald H. Lorenz
- 👤 Walter S. Creasy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:23
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6283; A; A61; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/225; A61L15/42; A61L15/46; A61L29/00; A61L29/04; A61L29/06; A61L29/08; A61L29/085; A61L29/14; A61L29/16; C08G18/08; C08G18/10; A61L2300/00; A61L2300/10; A61L2300/106; A61L2300/20; A61L2300/202; A61L2300/40; A61L2300/404; A61M; A61M25/00; A61M25/0043; A61M2025/0056; A61M25/0045
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
63 words
A medical material comprising: an anti-bacterial agent or anti-fungal agent complexed with polyvinylpyrrolidone which has been rendered insoluble in water and body fluids by being complexed with a polyurethane prior to complexing with said agent; said medical material being capable of releasing said anti-bacterial- or anti-fungal-polyvinylpyrrolidone complexed agent from said polyurethane-polyvinylpyrrolidone complex when said complex is in contact with water or body fluids.
Claim 2
Dependent Claim
63 words
A medical material comprising: an anti-bacterial agent or anti-fungal agent complexed with polyvinylpyrrolidone which has been rendered insoluble in water and body fluids by being complexed with a polyurethane prior to complexing with said agent; said medical material being capable of releasing said anti-bacterial- or anti-fungal-polyvinylpyrrolidone complexed agent from said polyurethane-polyvinylpyrrolidone complex when said complex is in contact with water or body fluids.
Claim 3
Dependent Claim
23 words
An anti-bacterial medical material in accordance with claim 1 in which the anti-bacterial agent is iodine, an iodide, hexachlorophene, griseofulvin, or miconazole nitrate.
Claim 4
Dependent Claim
13 words
A material in accordance with claim 1 in which the polyurethane is foamed.
Claim 5
Dependent Claim
25 words
An anti-bacterial article comprising: a substrate, a coating on the substrate comprising a polyurethane complexed with polyvinylpyrrolidone and an anti-bacterial agent complexed with said polyvinylpyrrolidone.
Claim 6
Dependent Claim
25 words
An anti-bacterial article comprising: a substrate, a coating on the substrate comprising a polyurethane complexed with polyvinylpyrrolidone and an anti-bacterial agent complexed with said polyvinylpyrrolidone.
Claim 7
Dependent Claim
31 words
An anti-bacterial article in accordance with claim 4 in which the substrate is selected from the group consisting of polyurethane, a vinyl resin, a polyacrylate, a polycarbonate, a polyester or rubber.
Claim 8
Independent Claim
25 words
A device for treating athlete's foot comprising a pad of a polyurethane foam complexed with polyvinylpyrrolidone which is complexed with an anti-bacterial and anti-fungal agent.
Claim 9
Independent Claim
25 words
A device for treating athlete's foot comprising a pad of a polyurethane foam complexed with polyvinylpyrrolidone which is complexed with an anti-bacterial and anti-fungal agent.
Claim 10
Dependent Claim
11 words
The device of claim 6 in which the agent is iodine.
Claim 11
Dependent Claim
12 words
The device of claim 6 in which the agent is an iodide.
Claim 12
Dependent Claim
23 words
The device of claim 6 in which the agent is selected from the group consisting of halides, halogens, hexachlorophene, griseofulvin, and miconazole nitrate.
Claim 13
Independent Claim
22 words
The device of any of claims 6 through 9 in which the pad has opposed concave sides for the reception of toes.
Claim 14
Dependent Claim
53 words
A medical material obtained from the process which comprises contacting a polyurethane-polyvinylpyrrolidone foam complex with a bio-effecting agent whereby at least some of the bio-effecting agent forms a complex with the polyvinylpyrrolidone present in the polyurethane-polyvinylpyrrolidone foam complex, said medical material releasing water-soluble polyvinylpyrrolidone-bio-effecting complex when contacted with water or a body fluid.
Claim 15
Dependent Claim
53 words
A medical material obtained from the process which comprises contacting a polyurethane-polyvinylpyrrolidone foam complex with a bio-effecting agent whereby at least some of the bio-effecting agent forms a complex with the polyvinylpyrrolidone present in the polyurethane-polyvinylpyrrolidone foam complex, said medical material releasing water-soluble polyvinylpyrrolidone-bio-effecting complex when contacted with water or a body fluid.
Claim 16
Dependent Claim
29 words
The medical material of claim 11 wherein said bio-effecting agent is selected from the group consisting of anti-bacterial agents, anti-fungal agents, analgesics, antibiotics, anesthetics, odor-enhancers, dyes, adhesives, and lubricants.
Claim 17
Dependent Claim
40 words
The medical material of claim 12 wherein said agent is selected from the group consisting of iodine, iodide, hexachlorophene, griseofulvin, miconazole nitrate, tolnaftate, benzocaine, salicyclic acid, retinoic acid, ascorbic acid, 4-chloro-3,5-dimethyl phenol, ampicillin, cephalosporcin C, methicillin, amphotericin, lidocaine, and resorcinol.
Claim 18
Dependent Claim
12 words
The medical material of claim 13 wherein said bio-effecting agent is iodine.
Claim 19
Dependent Claim
53 words
A medical material obtained from the process which comprises contacting a polyurethane-polyvinylpyrrolidone film complex with a bio-effecting agent whereby at least some of the bio-effecting agent forms a complex with the polyvinylpyrrolidone present in the polyurethane-polyvinylpyrrolidone film complex, said medical material releasing water-soluble polyvinylpyrrolidone-bio-effecting complex when contacted with water or a body fluid.
Claim 20
Dependent Claim
53 words
A medical material obtained from the process which comprises contacting a polyurethane-polyvinylpyrrolidone film complex with a bio-effecting agent whereby at least some of the bio-effecting agent forms a complex with the polyvinylpyrrolidone present in the polyurethane-polyvinylpyrrolidone film complex, said medical material releasing water-soluble polyvinylpyrrolidone-bio-effecting complex when contacted with water or a body fluid.
Claim 21
Dependent Claim
29 words
The medical material of claim 15 wherein said bio-effecting agent is selected from the group consisting of anti-bacterial agents, anti-fungal agents, analgesics, antibiotics, anesthetics, odor-enhancers, dyes, adhesives, and lubricants.
Claim 22
Dependent Claim
36 words
The medical material of claim 16 wherein said agent is selected from the group consisting of iodine, iodide, hexachlorophene, griseofulvin, miconazole nitrate, retinoic acid, ascorbic acid, 4-chloro-3,5-dimethyl phenol, ampicillin, cephalosporcin C, methicillin, amphotericin, lidocaine, and resorcinol.
Claim 23
Dependent Claim
12 words
The medical material of claim 17 wherein said bio-effecting agent is iodine.
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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 |