Deng S Q, Zhang N W, Wang B T, Zhou X S, Xu Y, Li B H, He F J
Department of Surgery, 3rd Hospital, Beijing Medical University.
Chin Med J (Engl). 1991 Oct;104(10):858-62.
It is sometimes very difficult to extract a huge impacted stone through the T-tube fistulous tract by conventional techniques with choledochoscope. To simplify the procedure, a lithotriptor PSW-G type using plasma shock wave to disintegrate the stone was designed. The efficacy to fragmentate stone was investigated both in vitro and in vivo. Stones can be shattered into pieces less than 3 mm in diameter in about 30 times of spark with lower energy ranging from 1.7-3.4 kV and 1-3 J. Animal experiments were carried out to prove the safety of the lithotriptor. There was neither interference with the cardiovascular and respiratory systems nor obvious damage to the adjacent tissue where plasma shock wave applied to break stones. Six patients with retained calculi impacted both in extra- and intra-hepatic duct were successfully treated by plasma shock wave lithotripsy. It appears very useful in dealing with a huge impacted stone in the biliary tract.
有时，通过常规技术使用胆道镜经T管瘘道取出巨大嵌顿结石非常困难。为简化操作，设计了一种利用等离子体冲击波破碎结石的PSW - G型碎石机。对其体外和体内碎石效果进行了研究。在能量范围为1.7 - 3.4 kV和1 - 3 J的较低能量下，经过约30次放电，结石可被粉碎成直径小于3 mm的碎片。进行动物实验以证明该碎石机的安全性。应用等离子体冲击波碎石时，对心血管和呼吸系统均无干扰，对邻近组织也无明显损伤。6例肝内外胆管均有残留结石嵌顿的患者成功接受了等离子体冲击波碎石治疗。它在处理胆道巨大嵌顿结石方面似乎非常有用。
