G - Physics – 01 – N
Patent
G - Physics
01
N
150/19, 150/3
G01N 33/48 (2006.01) A61B 5/00 (2006.01) A61B 5/117 (2006.01) C12Q 1/28 (2006.01)
Patent
CA 1103570
ABSTRACT This invention relates to a method and means for recording sweat gland activity which provides a dermatoglyph or pictorial representation which is directly proportional to the amount of sweat exuded by the glands Some prior attempts have been made to produce such representations. However, these prior attempts involve the use of potentially harmful or toxic chemicals, produce temporary discoloration of the skin surface to be recorded or are slow and time consuming to administer. The present invention provides a pic- torial representation of the activity by physical con- tact 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 of starch and a suitable oxidizing agent such as potassium persulfate. Alter- nately, 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 means for obtaining inkless finger- prints by forming a sensitized coating in situ on a sub- strate.
314924
Arora Ajit S.
Diamond Arthur S.
Tapper Robert
General Medical Company
Gowling Lafleur Henderson Llp
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