Multi-layer wound dressing

Details Multi-layer wound dressing Multi-layer wound dressing

1996-11-07

1998-06-02

Phelan, D. Gabrielle

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Web, sheet or filament bases; compositions of bandages; or...

424445, 604304, A61F 1300

Patent

active

057595704

ABSTRACT:
The invention provides wound dressings comprising a molecular filtration membrane having a maximum pore size in the range of from 0.001 .mu.m to 0.5 .mu.m, and preferably in the range of from 0.01 .mu.m to 0.25 .mu.m. The wound dressings may also comprise an absorbent layer atop the molecular filtration membrane and/or a wound contact layer of wound-friendly bioabsorbable material for contacting the wound. In use, the molecular filtration membrane retains high molecular weight biopolymers and wound healing factors at the wound surface while excluding bacteria and allowing rapid egress of wound exudate through the membrane into the absorbent layer.

REFERENCES:
patent: 3888247 (1975-06-01), Stenvall
patent: 4499896 (1985-02-01), Heinecke
patent: 4532937 (1985-08-01), Miller
patent: 4657006 (1987-04-01), Rawlings et al.
patent: 4803078 (1989-02-01), Sakai
patent: 4820293 (1989-04-01), Kamme
patent: 4867881 (1989-09-01), Kinzer
Abstract of JP-A-60 072 557, originally published Apr. 1985.
Abstract of JP-A-59 051 849 originally published Mar. 1984.
Abstract of JP-A-04 282 152 originally published Oct. 1992.

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