This Standard specifies the scope, terms and definitions, requirements, test methods, inspection rules, marking, labelling and packaging of liquid nitrogen cryosurgical equipment. This Standard is applicable to cryosurgical treatment equipment which uses liquid nitrogen as the refrigerant and utilizes the latent heat of vaporization phase change for refrigeration, and with the capacity of liquid nitrogen storage greater than 1 L (hereinafter referred to as cryosurgical equipment). The cryosurgical equipment mainly generates low temperature to the target tissue, which is used for cryo-necrosis, cryo- block, inflammatory reaction and cryo-adhesion.
This standard specifies the liquid nitrogen cryosurgery therapy equipment scope, definitions and terminology, requirements, test methods, inspection rules and signs, labels, and packaging requirements. This standard applies to refrigerant liquid nitrogen, using its latent heat of vaporization of refrigerant, and the memory capacity of more than 1L of liquid nitrogen cryosurgery therapy equipment (hereinafter referred to as therapy equipment). Therapy equipment mainly produce cryogenic target tissue for freezing necrosis, frozen block, inflammatory response and frozen with adhesions.
