Hot-cold dual-gas-coupled refrigerant-spraying cooling system for treatment of nevus of Ota

Abstract

The invention discloses a hot-cold dual-gas-coupled refrigerant-spraying cooling system for treatment of nevus of Ota. The system is composed of a refrigerant reservoir, a first electromagnetic valve,a second electromagnetic valve, a third electromagnetic valve, a first nozzle, a second nozzle, a third nozzle, a high-pressure air storage tank, and a resistance wire heating device. The refrigerantreservoir is connected with an inlet end of the first electromagnetic valve by a first flexible pipe; the first nozzle is installed at an outlet end of the first electromagnetic valve; the high-pressure air storage tank is connected with the second electromagnetic valve and the third electromagnetic valve by a second flexible pipe and a third flexible pipe; the second nozzle and the third nozzleare installed at outlet ends of the second electromagnetic valve and the third electromagnetic valve; and the resistance wire heating device is installed at the position, approaching the second electromagnetic valve, of the second flexible pipe. Therefore, the laser is assisted well for good treatment; and the skin is protected and the treatment effect is ensured.

Description

technical field [0001] The invention belongs to the field of medical equipment, in particular to a cold and hot double gas coupled refrigerant spray cooling system for treatment of nevus of Ota. Background technique [0002] Nevus of Ota is an abnormal differentiation of skin melanocytes caused by genetics or some intrauterine reasons, resulting in pigmented lesions on the skin in the distribution area of ​​the facial trigeminal nerve (mainly the first and second branches), and often spread to the sclera and other tissues. Clinically, it is characterized by brown and blue plaques or patches on the skin around the eyes and on the face, so it is also called brown and blue nevus on the eye and palate, and ocular dermal melanocytosis. In normal skin, a small amount of melanin is evenly distributed in the epidermis of the skin, and the skin color is uniform without local deepening. However, in the skin with nevus of Ota lesions, a large number of melanocytes are concentrated in t...

AI Technical Summary

Problems solved by technology

The treatment of nevus of Ota is difficult, and there is no ideal therapy at present. The main treatment methods are: ① excision of skin grafting, although the diseased tissue can be removed, but the color and luster of the skin graft after survival is often difficult to coordinate with the surrounding skin, and there is an incision scar. unacceptable to patients

②Cryotherapy or dermabrasion plus freezing and other treatments, the effect is not satisfactory

However, this method also encounters many challenges in the treatment of yellow patients with high melanin content. The cooling capacity is insufficient, and there is still a lot of room for improvement in the treatment effect.

[0006] R-134a is generally used as the medium for the existing refrigerant spray cooling in clinical laser treatment operations, which has a relatively high greenhouse effect (GWP=1300) and a long atmospheric life. Extensive use will have a great impact on global warming

In addition, it is worth noting that pure refrigerant transient spray cooling is not suitable for assisted cooling of the epidermis in the clinical operation of laser treatment of nevus of Ota, because it is easy to form a liquid film on the surface of the skin. , the liquid film is easy to mix with skin debris to form a residue covering the skin surface, which affects the penetration of the laser and makes subsequent treatment impossible

Up to now, there is still a lack of an effective cooling device that can be used for laser treatment of nevus of Ota on the market

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