DEVICE FOR LOCAL COOLING Russian patent published in 1997 - IPC

FIELD: medical equipment, in particular, cryoinstruments. SUBSTANCE: device for local cooling has a heat-insulated housing with a vessel for refrigerant, positioned on whose one end is replaceable working instrument connected through a hollow expansion bend with a blanked off end to the vessel for refrigerant, and installed on the other end, in the stopper axial hole, is a safety valve furnished with an adjusting screw with an axial duct; installed in the valve is a sprinkling tube, whose free end is furnished with a nozzle in the form of a squeezed end having the shape of a truncated cone. EFFECT: improved engagement of refrigerant with the outer surface of the instrument and durability of the procedure of sprinkling. 2 cl, 1 dwg