Apparatus for detecting temperature variations over selected reg

Details Apparatus for detecting temperature variations over selected reg Apparatus for detecting temperature variations over selected reg

1979-03-16

1980-12-16

Howell, Kyle L.

Surgery

Truss

Pad

73356, A61B 1000

Patent

active

RE0304468

ABSTRACT:
An apparatus for detecting temperature variations over selected regions of living tissue. The invention relates to the apparatus and to the method of detecting said temperature variations for aid in the early detection of malignant tissue in the breasts. The invention provides for the use of liquid crystals encapsulated between elastic flexible sheets which represent a composite film. The crystals are responsive to changes in temperature of said tissue to display a color pattern on said film representative of said temperature variations. The film conforms to the contour of the tissue to which it is applied, without materially deforming said tissue, by evacuating air from between said film and said tissue. The color pattern produced on said film is observed and is recorded photographically to obtain a thermogram of said temperature variations. The contoured film and the tissue are fan cooled for a relatively short period of time to produce a more sensitive color pattern on said film representative of said temperature variations.

REFERENCES:
patent: 3533399 (1970-10-01), Goldberg et al.
patent: 3674031 (1972-07-01), Weiche
patent: 3847139 (1974-11-01), Flam
patent: 3859982 (1975-01-01), Dove
patent: 3951133 (1976-04-01), Reese
patent: 3993809 (1976-11-01), Schranz et al.
patent: 3995621 (1976-12-01), Fletcher et al.
patent: 3998210 (1976-12-01), Nosari
patent: 4015591 (1977-04-01), Suzuki et al.
patent: 4024856 (1977-05-01), Kirianoff
patent: 4043324 (1977-08-01), Shaw
"The Chameleon Chemical", Life Magazine.

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