Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Thermal applicators
Patent
1997-12-11
1999-04-06
Jastrzab, Jeffrey R.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Thermal applicators
165 46, A61F 700
Patent
active
058911880
ABSTRACT:
A method for creating a surface having a fast changing temperature, comprises providing a heat exchanger coupled to an orifice opening into a jacket which is in contact with the surface to be heated and cooled, the jacket forming a reservoir capable of housing a fluid in contact with the surface to be heated and cooled, and providing two gas sources, each gas source being independently connected to the said heat exchanger, one source providing a first gas, which liquefies when it expands through the orifice, and the other gas source providing a second gas, having an inversion temperature lower than the temperature obtained by the liquefaction of the first gas, and causing the exhaust gas flowing out from the jacket, to flow through the said heat-exchanger to preheat or precool the inflowing gas, as the case may be, and further causing the said first and the second gas alternately to flow through the said heat exchanger and orifice, to cool or to heat the surface; means being provided for allowing and stopping the flow of each gas through the orifice.
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Andrew A. Gage, "Current Issues in Cryosurgery" Cryobiology, vol. 19, 1982, pp. 219-222.
Carter Ryan
Jastrzab Jeffrey R.
State of Israel, Ministry of Defense, Rafael-Armaments Developme
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