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我院从1974年起采用液氮冷冻治疗慢性鼻炎,效果较满意。现将其中资料完整并经随访观察的997例报道如下。一、冷冻器械我院应用的是自制简易手持式液氮冷刀,构造简单,使用方便,温度可达-112℃左右。其结构见附图。控压管外端套一橡皮管,起开关作用。使用时折闭橡皮管远端并轻轻加压,液氮即可沿输液管喷出与连接在螺丝口上的“冷刀头”接触,使“冷刀头”的温度急剧下降。液氮吸热后其氮气经输液管横段与“冷刀头”内壁之空间回流入排气管,最
Our hospital from 1974 using liquid nitrogen cryotherapy for chronic rhinitis, the effect is more satisfactory. Here is a complete data and follow-up observation of 997 cases are reported as follows. First, the application of frozen equipment Our hospital is a simple self-made hand-held liquid nitrogen cold knife, simple structure, easy to use, the temperature up to -112 ℃ or so. Its structure is shown in the attached drawings. Pressure control tube outer end of a rubber tube, switch role. Close the distal end of the rubber tube and press it lightly while using it. The liquid nitrogen can be sprayed along the infusion tube to make contact with the “cold blade” attached to the screw mouth, causing the temperature of the “cold blade” to drop sharply . Nitrogen after liquid nitrogen heat transfer through the transfusion tube section and “cold head ” the inner wall of the space back into the exhaust pipe, the most