Patent USRE29909E successfully refreshed from Google Patents.
USRE29909E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cleansing contaminated wounds
Assignee: HOWMEDICA SUTURES Inc A CORP OF NY
•
Filing: 1977-08-04
•
Granted: 1979-02-13
•
Expires: 1997-08-04
Abstract
Abstract Aqueous detergent solutions of block copolymers of ethylene oxide and propylene oxide having the structure: ##STR1## and an ethylene oxide to propylene oxide ratio of at least 4:1 have been found to be surprisingly useful in the cleansing of contaminated wounds in that they do not impair the wound's ability to resist infection. Surgical scrub solutions of these detergent solutions containing in addition antiseptic agents provide cleansing solutions which both eliminate bacteria and provide the desired cleansing action without impairing the wound's ability to resist infection.
Inventors
- 👤 Leonard D. Kurtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:31
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/74; A61K31/765; A61K31/77; A61K31/785; A61K31/787; A61K31/79; C; C11; C11D; C11D1/00; C11D1/66; C11D1/722
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
91 words
In the cleansing of contaminated wounds with a surgical scrub solution, the improvement which comprises employing as the surgical scrub solution an aqueous detergent solution which does not impair the wound's ability to resist infection, consisting of an aqueous solution of at least about 10% by weight of a block copolymer of ethylene oxide and propylene oxide having the structure: ##STR3## wherein the ratio of (C 2 H 4 O) a+c to b is at least about .Badd..[.4:1.]. .Baddend..Iadd.3:1 .Iaddend.said copolymer having an average molecular weight of about 5,000 to 15,500.
Claim 2
Dependent Claim
91 words
In the cleansing of contaminated wounds with a surgical scrub solution, the improvement which comprises employing as the surgical scrub solution an aqueous detergent solution which does not impair the wound's ability to resist infection, consisting of an aqueous solution of at least about 10% by weight of a block copolymer of ethylene oxide and propylene oxide having the structure: ##STR3## wherein the ratio of (C 2 H 4 O) a+c to b is at least about .Badd..[.4:1.]. .Baddend..Iadd.3:1 .Iaddend.said copolymer having an average molecular weight of about 5,000 to 15,500.
Claim 3
Dependent Claim
17 words
The improvement of claim 1 wherein the molecular weight of the copolymer is about 5,000 to 13,500.
Claim 4
Dependent Claim
29 words
The improvement of claim 1 wherein the molecular weight of the copolymer is about 5,000 to 13,500 and (C 2 H 4 O) a ** c is about 80%.
Claim 5
Dependent Claim
102 words
The improvement of claim 3 wherein the copolymer has a molecular weight of 8,350. .Iadd. 5. The improvement of claim 1 wherewith the ratio of (C 2 H 4 O) a+c to b is at least about 4:1. .Iaddend..Iadd. 6. The improvement of claim 5 wherein the molecular weight of the copolymer is about 5,000 to 13,500. .Iaddend..Iadd. 7. The improvement of claim 5 wherein the molecular weight of the copolymer is about 5,000 to 13,500 and (C 2 H 4 O) a+c is about 80%. .Iaddend..Iadd. 8. The improvement of claim 7 wherein the copolymer has a molecular weight of 8,350.
References Cited (Backward Citations)
US2739922A
Cited
US3326806A
Cited
US3367877A
Cited
US3539520A
Cited
US3730960A
Cited
US3855140A
Cited
US3728449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-12 | 1982-08-14 | 1983-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-12 | 1986-08-14 | 1987-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-12 | 1990-08-14 | 1991-02-13 | $7700.00 | Window Closed / Lapsed |