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US4064564A Expired / Lapsed US ⏱️ 0.0 years remaining

Chitin derived surgical glove powder

Assignee: Wyeth Holdings LLC
•
Filing: 1976-11-03
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Granted: 1977-12-27
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Expires: 1996-11-03
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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 2026-10-23 15:46
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/002; A61B; A61B42/00

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 59 words
A surgical glove of natural or synthetic rubber having on the surface thereof 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-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 which form of poly(N-acetyl-D-glucosamine) is slowly enzymatically degraded by contact with body tissues.
Claim 2
Dependent Claim 59 words
A surgical glove of natural or synthetic rubber having on the surface thereof 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-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 which form of poly(N-acetyl-D-glucosamine) is slowly enzymatically degraded by contact with body tissues.
Claim 3
Dependent Claim 19 words
The glove of claim 1 in which the biodegradable powder has a particle size of 0.5 to 149 microns.
Claim 4
Dependent Claim 26 words
The glove of claim 2 in which the glove and powder are sterile, and the powder is poly[N-acetyl-6-O-(carboxymethyl)-D-glucosamine] which will pass through a 200 mesh screen.
Claim 5
Dependent Claim 26 words
The glove of claim 2 in which the glove and powder are sterile, and the powder is poly[N-acetyl-6-O-(2'-hydroxyethyl)-D-glucosamine] which will pass through a 200 mesh screen.
Claim 6
Dependent Claim 26 words
The glove of claim 2 in which the glove and powder are sterile, and the powder is poly[N-acetyl-6-O-(ethyl)-D-glucosamine] which will pass through a 200 mesh screen.
Claim 7
Dependent Claim 26 words
The glove of claim 2 in which the glove and powder are sterile, and the powder is poly(N-acetyl-D-glucosamine) which will pass through a 200 mesh screen.

References Cited (Backward Citations)

US3911116A Cited
US3728739A Cited
US3810458A Cited
US3846382A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-12-26 1981-06-27 1981-12-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-12-26 1985-06-27 1985-12-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-12-26 1989-06-27 1989-12-27 $7700.00 Window Closed / Lapsed

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