冷冻治疗是利用各种不同的零下低温,使组织和细胞迅速降温,对局部病理性细胞和组织发生所需的不同程度的破坏,同时可激发机体免疫能力,从而达到治疗疾病的一种医疗技术。用液氮为致冷剂,目前已被公认为一种比较稳定而理想的致冷物质,其最冷点可达零下196℃,它是无味,无臭,无色,对生物组织无害,无毒,不自燃,不自爆,不传电,不 Cryotherapy is the use of a variety of sub-zero temperature, the rapid cooling of tissues and cells, the local pathological cells and tissues required to varying degrees of damage, and can stimulate the body’s immune capacity, so as to achieve a medical treatment of disease . With liquid nitrogen as the refrigerant, has now been recognized as a relatively stable and ideal refrigerant, the coldest point of up to minus 196 ℃, it is odorless, odorless, colorless, harmless to biological tissues, Non-toxic, non-spontaneous, not blew, no transmission, no