Contact type liquid nitrogen cryotherapy device

Abstract

The invention discloses a contact type liquid nitrogen cryotherapy device. The contact type liquid nitrogen cryotherapy device comprises an outer layer mechanism, an implementing mechanism and an inner layer mechanism. The outer layer mechanism is arranged on the outer side of the inner layer mechanism, and the implementing mechanism is connected with the inner layer mechanism; according to the size of an area need to be treated, cryoprobes of different sizes are selected and unnecessary damages to skin in a non-treatment area cannot be caused; one end of the cryoprobe is in contact with the skin and the other end of the cryoprobe is always in contact with liquid nitrogen so that the liquid nitrogen temperature is directly transmitted to the skin; and a temperature sensor with a patch is arranged on the cryoprobe to monitor the temperature of the cryoprobe in real time in the freezing process, so that it is ensured that the temperature of the cryoprobe is low enough and stable; in thefreezing process, the temperature is not judged by relying on the sense of a patient; nitrogen vaporized from liquid nitrogen or nitrogen which is not directly sprayed to the skin is collected by a pipeline and discharged separately, and the freezing safety is high; and the freezing temperature can be recorded in a storage of the device or even printed out by a printer provided with the device andsigned by both doctors and patients to avoid doctor-patient fights afterwards.

Description

technical field [0001] The invention relates to the technical fields of skin disease treatment and cosmetology, in particular to a contact-type liquid nitrogen cryotherapy device. Background technique [0002] Now liquid nitrogen freezing equipment is non-contact by vaporizing liquid nitrogen and spraying low-temperature nitrogen onto the skin surface for cryotherapy. The temperature of nitrogen is generally not lower than -150°C, and the temperature under liquid nitrogen (-196°C) is not really realized. ℃) treatment; for stubborn skin diseases and skin cosmetics requiring low temperature, the temperature treatment effect of -196 ℃ is better. Direct injection of low-temperature nitrogen gas during facial treatment may easily cause the risk of hypoxia and suffocation due to excessive inhalation of nitrogen gas by the patient (nitrogen gas is an inert gas and cannot be breathed), and the nitrogen injection area is too large to be directional frozen. The skin freezes together,...

AI Technical Summary

Problems solved by technology

Direct injection of low-temperature nitrogen gas during facial treatment may easily cause the risk of hypoxia and suffocation due to excessive inhalation of nitrogen gas by the patient (nitrogen gas is an inert gas and cannot be breathed), and the nitrogen injection area is too large to be directional frozen. The skin freezes together, causing damage from overfreezing

[0003] The contact type of the current liquid nitrogen freezing equipment is to use a tapered copper head or a cotton swab to soak it in liquid nitrogen and then press it on the skin to freeze it, because the liquid nitrogen has a low boiling point and is easy to vaporize the copper head or cotton swab taken out of the liquid nitrogen. The temperature will rise quickly, and the temperature in contact with the skin generally does not reach the temperature of liquid nitrogen, and the temperature will become higher and higher after contact with the skin, so that it is not clear what the freezing temperature is, and it feels that the temperature is not enough and starts again. Change a copper head or cotton swab; the use of this kind of cryotherapy equipment mainly depends on the experience of the operator, and it is easy to cause insufficient freezing and excessive freezing (frost injury)

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