1974年11月起,我们应用自制手持式简便液氮冷冻治疗器治疗皮肤病,至1975年7月计治疗130例,今择其资料较完整的100例报告如下。一、器材与方法手持式简便液氮冷冻治疗器结构如下 November 1974, we use homemade hand-held liquid nitrogen cryogenic healer treatment of skin diseases, to July 1975 treatment of 130 cases, now choose the more complete data of 100 cases are as follows. First, the equipment and methods Hand-held liquid nitrogen cryogenic healer structure is as follows