Methods for detecting dehydration of a biomedical hydrogel

Details Methods for detecting dehydration of a biomedical hydrogel Methods for detecting dehydration of a biomedical hydrogel

1986-03-31

1988-01-05

Cohen, Lee S.

Surgery

Means for introducing or removing material from body for...

Infrared, visible light, ultraviolet, x-ray or electrical...

128639, 128660, 128803, 604111, 604404, A61N 130

Patent

active

047173785

ABSTRACT:
A visual (as opposed to mechanical or electronic) method for detecting the state of dehydration (or hydration) of a biomedical hydrogel is disclosed. The method contemplates incorporating a pH sensitive indicator into the hydrogel as it is prepared and applying the hydrogel to the skin-contacting surface of a biomedical device such as an electrode. Shortly before the biomedical device is to be used, the color of the hydrogel on the device is visually compared with its freshly-prepared color to determine the approximate state of dehydration of the gel.

REFERENCES:
patent: 3989050 (1976-11-01), Buchalter
patent: 4391278 (1983-07-01), Cahalan et al.
patent: 4593053 (1986-06-01), Jevne et al.

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