Method and means for recording sweat gland activity

Details Method and means for recording sweat gland activity Method and means for recording sweat gland activity

1977-10-31

1980-02-26

Michell, Robert W.

Surgery

Truss

Pad

427 1, A61B 500

Patent

active

041900561

ABSTRACT:
Method and apparatus for recording sweat gland activity which provides a pictorial representation thereof by physical contact of an iodide treated skin area with a dry sensitized substrate. In one preferred embodiment, the sensitized substrate comprises a sheet material which has been coated with an aqueous solution containing from 1 to 10 percent by weight of starch and from 2 to 10 percent by weight of a suitable oxidizing agent such as potassium persulfate. Alternately, the dry sensitized substrate comprises a starch-oxidizing agent mixture which has been impregnated into an absorbent base layer. With slight modification of the foregoing embodiment, the present invention also provides a method and apparatus for obtaining inkless fingerprints by forming a sensitized coating in situ on a substrate. For fingerprinting purposes, the sensitized coating is preferably formed from a quick drying starch-oxidizing agent solution including alcohol as a solvent. Accordingly, an aqueous iodide solution is applied to the skin area, and the treated skin area is subsequently contacted with the dry sensitized coating to produce the fingerprint.

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