Absorbent cellulosic structures

Details Absorbent cellulosic structures Absorbent cellulosic structures

1981-08-24

1983-09-20

Rosenbaum, C. Fred

Surgery

Means and methods for collecting body fluids or waste material

Absorbent pad for external or internal application and...

604356, 604368, A61F 1300

Patent

active

044053240

ABSTRACT:
Absorbent, coherent, flexible structures in the form of fibrous webs and porous sponges comprising cellulose derivatives having a DS of between about 0.05 and about 0.35 whereby upon application to the body and wet with aqueous body liquids, the protruding fibers and fibrils or hairs become highly swollen or may dissolve thereby eliminating irritation. The derivative may be such as to impart hemostatic properties and the structure may include uniformly dispersed therein chitin and/or starch derivatives to enhance the hemostatic efficacy. The structures may include water-soluble agents which function as dry binders but when the structure is wet with aqueous body liquids, the agents dissolve and become leached from the structures.

REFERENCES:
patent: 3005456 (1961-10-01), Graham, Jr.
patent: 3067745 (1962-12-01), Burgeni et al.
patent: 3094494 (1963-06-01), Hopkins et al.
patent: 3371666 (1968-03-01), Lewing
patent: 3431909 (1969-03-01), Krusko
patent: 3520302 (1970-07-01), Jones
patent: 3723413 (1973-03-01), Chatterjee et al.
patent: 3935099 (1976-01-01), Weaver et al.
patent: 4292972 (1981-10-01), Pawelchak et al.
The Merck Index, 9th Ed., 1976, p. 259.

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