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我们自1987年7月始进行了中晚期肝癌全方位冷冻机的研制。冷冻治疗机由液氮杜瓦容器、输液管和全方位致冷器三部分组成。致冷器为计状插入式,由9针及12针等组成。每支致冷器有回气道装置,使致冷组织不与液氮直接接触,输出管装有灵活控制开关。杜瓦容器输出压力在152.79～202.65Kpa表压时为最佳工作状态,并有一定安全系数,其安全耐受压系数为1013.250Kpa,本机所采用杜瓦器为双层不锈钢组成,其容积为10立升。本仪器附有热电隅测温仪,用数字显示。
Since July 1987, we have carried out the development of an all-in-one freezer for advanced and advanced liver cancer. The cryotherapy machine consists of a liquid nitrogen dewar container, an infusion tube, and an omnidirectional refrigerator. The refrigerator is a meter-type plug-in type consisting of 9-pin and 12-pin. Each refrigerator has a return airway device so that the cooling organization does not come into direct contact with liquid nitrogen, and the output pipe is equipped with a flexible control switch. The Dewar vessel output pressure is the best working condition when the gauge pressure is 152.79~202.65Kpa, and it has a certain safety factor. Its safety tolerance pressure coefficient is 1013.250 Kpa. This machine uses the Duo vessel as a double stainless steel component and its volume It is 10 liters. The instrument is equipped with a thermoelectric pyrometer and is digitally displayed.