Cryopexor for treating preauricular fistula

Abstract

The invention relates to the technical field of medical instruments, in particular to a cryopexor for treating a preauricular fistula. The cryopexor comprises a liquid nitrogen bottle, a low-temperature compensation bottle, a cryopexor head, a controller and a micro vacuum pump II; the liquid nitrogen bottle is connected with the low-temperature compensation bottle, a hose is connected to an inputport of a micro vacuum pump I, the cryopexor head is connected with an output port of the micro vacuum pump I, the micro vacuum pump II is arranged on a pipe I, a refrigerative electric pile is arranged in the low-temperature compensation bottle, and the controller is electrically connected with the micro vacuum pump I and the micro vacuum pump II. By means of the cryopexor, the temperature riseof liquid nitrogen can be reduced to the greatest degree, the original temperature environment of the liquid nitrogen is kept, and therefore the liquid nitrogen can achieve the optimal cryotherapy effect; the stability of the liquid nitrogen is ensured; through a transparent cover, the liquid nitrogen sprayed by the cryopexor head can be prevented from escaping out of the transparent cover and canstay in the transparent cover for a long time, and therefore better cryotherapy is conducted on the preauricular fistula and surrounding chronic infection foci of a patient.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a refrigerator for treating preauricular fistula. Background technique [0002] Preauricular fistula is a congenital defect caused by congenital underdevelopment. The opening of preauricular fistula is mostly located in front of the crus of the helix, and a few can be located in the triangular fossa of the auricle or the cavity of the concha. Usually asymptomatic. When pressing, there may be a little thin mucus or milky white sebum-like substance overflowing from the fistula opening, and the local area feels itchy and uncomfortable. Asymptomatic or non-infected persons may not be treated. When local itching or pricking occurs, there is discharge overflowing. Sometimes there is often a little white discharge with a slight smell around the small eyes when gently squeezed. [0003] In the prior art, after the infection of the preauricular fistula, it is generally removed...

AI Technical Summary

Problems solved by technology

But this utility model also has the following problems: the one, because liquid nitrogen directly reaches freezing head through flexible pipe from liquid nitrogen container, because liquid nitrogen is easy to absorb heat in this process, heats up faster, causes physiotherapy effect relatively poor; The spontaneous conduction of nitrogen from the hose to the freezing head is slow, and the third is that the liquid nitrogen stays in the freezing head for a short period of time, so that the treatment effect on the lesion, that is, the surrounding parts, is not good

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