焦耳-汤姆逊效应临床应用及研究价值分析  

Clinical applicaton of Joule-Thomson effect and the analysis of its research significance

作　　者：徐志荣[1] 徐汀[2] 李晶[1] 张良才[1] 张卫东[1] 

机构地区：[1]成都军区昆明总医院医学工程科,云南昆明市650032 [2]云南大学物理科学与技术学院,云南昆明市650033

出　　处：《中国医学装备》2011年第8期28-30,共3页China Medical Equipment

摘　　要：应用焦耳-汤姆逊效应所研制出的氩氦刀,已在临床上推广应用,其关键技术是控制低温区域和冷冻速率。当氩气在针孔内急速释放时,可在十多秒内冷冻病变组织至-120～165℃,当氦气在针孔内急速释放时,将产生急速升温至零上45℃,冷冻温度变化率大于25℃/min,最终温度达到-20℃至-40℃时,就能够有效的杀灭肿瘤细胞。Argon-helium knife based on Joule-Thomson effect has been generalized and applied in clinical practice. In which gordian technique was the control of region of low temperature and freezing rate. The temperature of the region which tissues have cancerated sharply fell down to -120℃～-165℃ with Argon gas ejecting from pinhole after more than ten seconds, while the temperature of the region cancerated rapidly rose up to 45 ℃ with helium gas ejecting from pinhole. If change rate of the temperature arrive at 25℃/min, tumor cells will be effectively killed.

关 键 词：节流效应 氩氦刀 冷冻消融 

分 类 号：R318.52[医药卫生—生物医学工程]