Absorbent wound dressings

Details Absorbent wound dressings Absorbent wound dressings

1998-04-28

1999-11-09

Weiss, John G.

Surgery: splint, brace, or bandage

Bandage structure

128287, 602 56, 602 55, A61F 500

Patent

active

059818220

ABSTRACT:
The invention provides a wound dressing (1) comprising a wound contacting sheet (4) laminated to one side of an absorbent layer (3) of water-swellable absorbent material such as a polyurethane. A liquid water-impermeable backing layer (2) is laminated to the other side of the absorbent layer (3). The wound contacting sheet is provided with one or more slits (5) therein. Expansion of the absorbent layer (3) due to absorption of wound exudate causes the slits (5) in the wound contacting sheet (4) to expand, thereby allowing passage of high flow rates of wound exudate. If the flow of exudate falls, then the slits close, thereby avoiding excessive drying of the wound surface.

REFERENCES:
patent: 2877765 (1959-03-01), Bunyan
patent: 3399672 (1968-09-01), Crowe et al
patent: 4541426 (1985-09-01), Webster
patent: 5397316 (1995-03-01), La Von et al.
patent: 5584801 (1996-12-01), Kuroyanagi et al.
Japanese Patent Abstract Publication No. 07100197, Date of Filing Aug. 20, 1993. Title Rolled Coating Material For Wound (Copyright: .RTM. 1995, JPO) .

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