Experimental study on a cryosurgery apparatus

作     者：Shao-zhi ZHANG Dong-bo WU Ge YANG Guang-ming CHEN 

作者机构：Institute of Refrigeration and Cryogenics Zhejiang University Hangzhou 310027 China 

出 版 物：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 (浙江大学学报（英文版）A辑（应用物理与工程）)

年 卷 期：2010年第11卷第2期

页      面：128-131页

核心收录：

学科分类：080705[工学-制冷及低温工程] 0832[工学-食品科学与工程（可授工学、农学学位）] 08[工学] 0807[工学-动力工程及工程热物理] 083201[工学-食品科学] 

基　　金：Project (No.50606032) supported by the National Natural Science Foundation of China 

主　　题：Cryosurgery Cryoprobe Auto-cascade refrigeration system Refrigerant mixture 

摘      要：Cryosurgery is an effective way of curing many diseases including tumors and cancers. It can be applied using a variety of systems and cryogens. Cheap, convenient, reliable equipment still needs to be developed so that cryotherapy may be accepted by surgeons and hospitals. This paper presents a cryosurgery apparatus that utilizes an auto-cascade refrigeration system. Refrigerant mixture R50/R23/R600a was selected as the working fluid. The mixture composition was altered to achieve lower temperatures and higher capacity. The lowest temperature at the cryoprobe could be as low as -100℃, and 8 W refrigeration capacity could be obtained at -80 ℃. An ice ball of 11.6 mm diameter could be formed when the cryoprobe was immersed in a water bath at 37 ℃.