Severing by tearing or breaking – Breaking or tearing apparatus – Including means to apply thermal shock to work
Patent
1981-02-20
1983-11-15
Yost, Frank T.
Severing by tearing or breaking
Breaking or tearing apparatus
Including means to apply thermal shock to work
225 1, 241DIG37, 356 36, B26F 300
Patent
active
044151071
ABSTRACT:
An apparatus for intraoperative diagnosis is described which comprises a refrigerating device adapted to sprinkle a cryogenic liquid on the surface of a slide whereby the surface of the slide is cooled to at least -4.degree. C. up to -8.degree. C., at least one cooling fan which increases the evaporation of the cryogenic liquid and permits to achieve the necessary hypothermia on the slide; an automatic appositor which permits to exert a measurable and graduated pressure onto the section of the organ which has been interposed between the appositor and the slide at the time in which the section has reached a predetermined temperature. The appositor is provided with means for varying automatically the pressure during the advance of the slide. The refrigerating device comprises a cylinder containing a cryogenic liquid. The invention also resides in the method of carrying out histological analysis which consists of placing a section of tissue under examination on a slide, cooling vigorously the slide whereby the tissue undergoes a thermic shock and exfoliates on the slide. Pressure is applied after the section of tissue has been cooled.
REFERENCES:
patent: 3116863 (1964-01-01), Long
patent: 3797757 (1974-03-01), Marshall
patent: 4023734 (1977-05-01), Herve et al.
patent: 4255216 (1981-03-01), Conant et al.
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