Rhinological diagnostic device

Details Rhinological diagnostic device Rhinological diagnostic device

1989-02-10

1990-08-07

Jaworski, Francis

Surgery

Truss

Pad

128716, 374162, 374186, A61B 500

Patent

active

049459198

ABSTRACT:
A rhinological diagnostic device in the form of a multi-layer sheet comprising, from top to bottom, a transparent plastic layer, a thermochromic liquid crystal layer, a black coating layer and a support layer. In use, this multi-layer sheet is positioned beneath the nose to cause expired air from the nostrils to impinge on the transparent plastic layer for diagnosing an abnormality in the nasal cavity based on the resulting topographic color pattern in said thermochromic liquid crystal layer.

REFERENCES:
patent: 3633425 (1972-01-01), Sanford
patent: 3720623 (1973-03-01), Cartmell et al.
patent: 3822594 (1974-07-01), Parker
patent: 3993809 (1976-11-01), Schranz et al.
patent: 4682605 (1987-07-01), Hoffman

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