Surgery – Instruments – Cyrogenic application
Patent
1991-05-13
1993-05-04
Aschenbrenner, Peter A.
Surgery
Instruments
Cyrogenic application
606 21, 606 23, A61B 1736
Patent
active
052076741
ABSTRACT:
A thermoelectric cryoprobe for the topical treatment of neoplasms by freezing. The cryoprobe comprises a plurality of stacked thermoelectric modules coupled to a distal treatment tip through a heat pipe. Heat is dissipated by a heat exchanger system. An external control unit is provided which serves as a source of DC power for the hand-held cryoprobe and contains a control system for controlling the thermoelectric element based upon temperature feedback from treatment site. Temperature feedback from the sensors facilitates freeze-thaw cycling by the cryoprobe to more effectively destroy the tissue at the treatment site.
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Soviet Patents Abstracts, Section PQ, 25 Aug. 1982, Derwent Publications, Ltd., London, GB; Class P31, AN 82-J4247E & SU,A,865 286 (Ivchenko).
Wilcox and Giesler, Jr., "An Instrument Using a Multiple Layer Peltier Device to Change Skin Temperature Rapidly," Brain Research Bulletin, vol. 12, pp. 143-146, 1984.
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