Patent US4969443A successfully refreshed from Google Patents.
Patent US4068757A successfully refreshed from Google Patents.
US4068757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chitin derived powder in sterile surgical element package
Assignee: Wyeth Holdings LLC
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Filing: 1976-11-03
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Granted: 1978-01-17
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Expires: 1996-11-03
Abstract
Abstract Natural or synthetic rubber surgical elements such as tubing, catheters, drains and gloves are "lubricated" so as to prevent sticking during storage, and permit easier emplacement, such as putting on the gloves by a surgeon or nurse, by applying to the surface of the rubber element A finely divided biodegradable powder consisting essentially of An enzymatically degradable form of poly(N-acetyl-D-glucosamine) selected from the group consisting of Poly[N-acetyl-6-O-(carboxymethyl)-D-glucosamine], Poly[N-acetyl-6-O-(2'-hydroxyethyl)-D-glucosamine], Poly[N-acetyl-6-O-(ethyl)-D-glucosamine], and Poly(N-acetyl-D-glucosamine) itself This powder is readily absorbed by living tissue without deleterious tissue reaction, thus minimizing tissue reaction from the transfer of the powder from the element such as a glove to internal sites in a subject. The gloves may be packaged in a strippable laminate package. The polymers are derived from chitin.
Inventors
- 👤 Donald James Casey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:47
CPC Classifications
C; C09; C09D; C09D105/00; C09D105/08; A; A61; A61B; A61B42/00; A61B42/40; A61M; A61M25/00; A61M25/002
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
86 words
A sterile surgical element package comprising a strippable laminate container having therein a surgical element of natural or synthetic rubber; having on the surface of said element in a small but lubricity imparting quantity; a finely divided biodegradable powder consisting essentially of an enzymatically degradable form of poly(N-acetyl-D-glucosamine) selected from the group consisting of poly[N-acetyl-6-0-(carboxymethyl)-D-glucosamine], poly[N-acetyl-6-0-(2'-hydroxyethyl)-D-glucosamine], poly[N-acetyl-6-0-(ethyl)-D-glucosamine], and poly(N-acetyl-D-glucosamine) itself whereby in surgical use, any of the lubricity imparting powder which is transferred into a wound is readily absorbed by living tissue without adverse side effects.
Claim 2
Dependent Claim
86 words
A sterile surgical element package comprising a strippable laminate container having therein a surgical element of natural or synthetic rubber; having on the surface of said element in a small but lubricity imparting quantity; a finely divided biodegradable powder consisting essentially of an enzymatically degradable form of poly(N-acetyl-D-glucosamine) selected from the group consisting of poly[N-acetyl-6-0-(carboxymethyl)-D-glucosamine], poly[N-acetyl-6-0-(2'-hydroxyethyl)-D-glucosamine], poly[N-acetyl-6-0-(ethyl)-D-glucosamine], and poly(N-acetyl-D-glucosamine) itself whereby in surgical use, any of the lubricity imparting powder which is transferred into a wound is readily absorbed by living tissue without adverse side effects.
Claim 3
Dependent Claim
16 words
The package of claim 1 in which the surgical element is a pair of surgical gloves.
Claim 4
Dependent Claim
26 words
The package of claim 2 in which the gloves and powder are sterile, and the powder is poly[N-acetyl-6-0-(carboxymethyl)-D-glucosamine] which will pass through a 200 mesh screen.
Claim 5
Dependent Claim
26 words
The package of claim 2 in which the gloves and powder are sterile, and the powder is poly[N-acetyl-6-0-(2'hydroxyethyl)-D-glucosamine] which will pass through a 200 mesh screen.
Claim 6
Dependent Claim
26 words
The package of claim 2 in which the gloves and powder are sterile, and the powder is poly[N-acetyl-6-0-(ethyl)-D-glucosamine] which will pass through a 200 mesh screen.
Claim 7
Dependent Claim
26 words
The package of claim 2 in which the gloves and powder are sterile, and the powder is poly(N-acetyl-D-glucosamine) which will pass through a 200 mesh screen.
Claim 8
Dependent Claim
80 words
A sterile surgical element package comprising in combination a strippable interiorally sterile laminate container having therein a. a sterile surgical element of natural or synthetic rubber, and b. a finely divided biodegradable powder consisting essentially of an enzymatically degradable form of poly(N-acetyl-D-glucosamine) selected from the group consisting of poly[N-acetyl-6-0-(carboxymethyl)-D-glucosamine], poly[N-acetyl-6-0-(2'-hydroxyethyl)-D-glucosamine], poly[N-acetyl-6-0-(ethyl)-D-glucosamine], poly(N-acetyl-D-glucosamine) itself c. whereby in surgical use, any of the lubricity imparting powder which is transferred into a wound is readily absorbed by living tissue without adverse side effects.
Claim 9
Dependent Claim
80 words
A sterile surgical element package comprising in combination a strippable interiorally sterile laminate container having therein a. a sterile surgical element of natural or synthetic rubber, and b. a finely divided biodegradable powder consisting essentially of an enzymatically degradable form of poly(N-acetyl-D-glucosamine) selected from the group consisting of poly[N-acetyl-6-0-(carboxymethyl)-D-glucosamine], poly[N-acetyl-6-0-(2'-hydroxyethyl)-D-glucosamine], poly[N-acetyl-6-0-(ethyl)-D-glucosamine], poly(N-acetyl-D-glucosamine) itself c. whereby in surgical use, any of the lubricity imparting powder which is transferred into a wound is readily absorbed by living tissue without adverse side effects.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |