Liquid retaining absorbent structure

Details Liquid retaining absorbent structure Liquid retaining absorbent structure

1985-10-21

1987-06-30

Yasko, John D.

Surgery

Means and methods for collecting body fluids or waste material

Absorbent pad for external or internal application and...

6043851, 428 72, 428913, A61F 1316

Patent

active

046767851

ABSTRACT:
Liquid retaining absorbent structures consisting of a plurality of cells, each cell having an aperture to allow a liquid to enter the cell. The cell contains an expandable absorbent material and a valve member. As liquid enters the cell, the absorbent expands. When the amount of liquid is equivalent to the free volume of the cell the expanding absorbent causes the valve member to seal the aperture to isolate the liquid.

REFERENCES:
patent: 3881489 (1975-05-01), Hartwell
patent: 4173046 (1979-11-01), Gallagher
patent: 4323069 (1982-04-01), Ahr et al.
patent: 4360021 (1982-11-01), Stima

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