US4122158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Topical therapeutic preparations
Assignee: Alza Corp
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Filing: 1977-06-27
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Granted: 1978-10-24
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Expires: 1997-06-27
Abstract
Abstract A method is disclosed for treating the burned surface of an animal by administering to said surface a contact composition comprising a hydrophobic, bioerodible polymer containing an agent selected from the group consisting of antibacterial, antibiotic, antifungal, proteolytic enzyme and mixtures thereof, which composition when placed in contact with the burned surface maintains homeostasis including prevention of tissue dehydration and thermal loss, and as the polymer bioerodes over time, releases agent to produce a continuous chemoprophylatic or chemotherapeutic effect.
Inventors
- 👤 Edward Emil Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:57
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/64; A61K; A61K47/00; A61K47/30; A61K47/34; A61K9/00; A61K9/20; A61K9/2004; A61K9/2022; A61K9/2031; A61K9/204; A61L15/44; A61L2300/00; A61L2300/20; A61L2300/252; A61L2300/254; A61L2300/40; A61L2300/404; A61L2300/406; A61L2300/416
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
125 words
A therapeutic preparation for topical application comprising an absorbent carrier containing a composition, which composition comprises an effective amount of a polymer of the general formula: ##STR3## wherein R is a lower alkyl of 1 to 7 carbons, x is 0 or 1, y is 4 to 10, z is 1 to 3 and n is 10 to 1000; said polymer having mixed therein from 0.001 to 30% of a chemotherapeutic selected from the group consisting of sodium sulfacetamide, silver sulfadiazine, sulfadimethoxine, sulfaethidole, sulfamethazine, sulfamethizole, sulfamethoxazole, sulfapyridine, homosulfamilamide, sulfamylon acetate, sulfamylon hydrochloride, aminosalicyclic acid, cetylpyridinium chloride, silver nitrate, 5-chloro-3-tri-fluoromethyl salicyclanilide, 4-methyl-benzinidazolone, chlorohexidine, and hexachlorophene, and wherein the carrier is a member selected from the group consisting of fabrics, plastic fibers, porous foam rubber and paper.
Claim 2
Dependent Claim
125 words
A therapeutic preparation for topical application comprising an absorbent carrier containing a composition, which composition comprises an effective amount of a polymer of the general formula: ##STR3## wherein R is a lower alkyl of 1 to 7 carbons, x is 0 or 1, y is 4 to 10, z is 1 to 3 and n is 10 to 1000; said polymer having mixed therein from 0.001 to 30% of a chemotherapeutic selected from the group consisting of sodium sulfacetamide, silver sulfadiazine, sulfadimethoxine, sulfaethidole, sulfamethazine, sulfamethizole, sulfamethoxazole, sulfapyridine, homosulfamilamide, sulfamylon acetate, sulfamylon hydrochloride, aminosalicyclic acid, cetylpyridinium chloride, silver nitrate, 5-chloro-3-tri-fluoromethyl salicyclanilide, 4-methyl-benzinidazolone, chlorohexidine, and hexachlorophene, and wherein the carrier is a member selected from the group consisting of fabrics, plastic fibers, porous foam rubber and paper.
Claim 3
Dependent Claim
45 words
The therapeutic preparation for topical application according to claim 1, wherein the carrier is a member selected from the group consisting of double knit polyester, polyester fiber, polyolefin fiber, cotton gauze, double selvage edged gauze, surgical linen, bleached cotton percale, polyamide fabric and cellulosic fabrics.
Claim 4
Dependent Claim
29 words
The therapeutic preparation for topical application according to claim 1, wherein the carrier is a double knit polyester fabric, the polymer is poly(2,2-dioxohexamethylene tetrahydrofuran) and the chemotherapeutic is 4-homosulfanilamide.
Claim 5
Dependent Claim
32 words
The therapeutic preparation for topical application according to claim 3, wherein the fabric contains 4 grams of poly(2,2-dioxohexamethylene tetrahydrofuran) and the polymer has mixed therein 0.1 to 30% by weight of 4-homosulfanilamide.
Claim 6
Dependent Claim
50 words
The therapeutic preparation for topical application according to claim 1, wherein the composition additionally contains an antibiotic agent that is a member selected from the group consisting of bacitracin, zinc bacitracin, chlortetracycline monohydrochloride, colistin sulfate, cycloserin, erythromycin, chloramphenicol, gentamicin sulfate, neomycin sulfate, polymyxin sulfate, ampicillin, sodium cephalothin, penicillin and lincomycin.
Claim 7
Dependent Claim
37 words
The therapeutic preparation for topical application according to claim 1, wherein the composition additionally contains an enzyme that is a member selected from the group consisting essentially of papain, trypsin, collagenase, subitilisin, pepsin, lysozyme, streptokinase and fibrinolysin.
References Cited (Backward Citations)
US3983209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-23 | 1982-04-24 | 1982-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-23 | 1986-04-24 | 1986-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-23 | 1990-04-24 | 1990-10-24 | $7700.00 | Window Closed / Lapsed |