Device for determining skin sensitivity
First Claim
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1. A device for determining the degree of skin sensitivity due to the persistence of a scratch trace on the skin surface produced by said device, comprising:
- a housing having a base surface;
at least one pressure element having one end extending into said housing and having a rounded trace producing surface on the other end thereof, said trace producing surface protruding from said housing at said base surface;
compressible means within said housing in engagement with said pressure element, having a predetermined spring force, for compressing said at least one pressure element against the skin surface at a constant pressure of 250-500 gm/mm2 when said trace producing surface is depressed to said base surface,whereby said at least one pressure element is depressable into said housing at a constant pressure and therefore the pressure on the skin surface will be constant, thereby allowing a plurality of scratch traces to be applied to the skin surface at the same surface pressure.
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Abstract
A device for determining the degree of skin sensitivity on the basis of the persistance of a streak. At least one element is provided which is to be compressed against the action of an elastic system or a spring. The outer end of this pressure element is provided with a surface which is contacted with the skin to enable a standardized pressure to be applied thereto.
38 Citations
6 Claims
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1. A device for determining the degree of skin sensitivity due to the persistence of a scratch trace on the skin surface produced by said device, comprising:
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a housing having a base surface; at least one pressure element having one end extending into said housing and having a rounded trace producing surface on the other end thereof, said trace producing surface protruding from said housing at said base surface; compressible means within said housing in engagement with said pressure element, having a predetermined spring force, for compressing said at least one pressure element against the skin surface at a constant pressure of 250-500 gm/mm2 when said trace producing surface is depressed to said base surface, whereby said at least one pressure element is depressable into said housing at a constant pressure and therefore the pressure on the skin surface will be constant, thereby allowing a plurality of scratch traces to be applied to the skin surface at the same surface pressure. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification