高压脉冲放电碎石法研究

High voltage pulse discharge lithotripsy

为了研究高电压脉冲放电法破碎结石的可行性,结合高压脉冲放电破碎岩石的理论,利用三维电磁场仿真软件仿真分析了脉冲放电碎石过程中粒子的运动轨迹。仿真结果显示:高压脉冲放电碎石法克服拉应力做功,比液电碎石法克服压应力做功破碎结石更有效;高压脉冲放电碎石法直接与结石接触碎石,比体外冲击波碎石法对人体内部器官损伤小,更安全;高压脉冲放电碎石法设备主要利用脉冲变压器及相应的陡化电路获得高电压、陡脉冲,所以电路简单、制造成本低、经济性好。

In order to study the feasibility of high voltage pulse discharge for stone disintegration,the motion trajectories of particles in the process of high voltage pulse discharge are analyzed using three-dimensional electromagnetic field simulation software based on the theory of high voltage pulse discharge for rock fragmentation. The simulation results show that the high voltage pulse discharge lithotripsy overcomes tensile stress,and it is more effective than electrohydraulic lithotripsy that overcomes pressure force; the high-voltage pulse discharge lithotripsy contacts with stones directly,compared with extracorporeal shock wave lithotripsy,it has smaller damage to internal organs of human body and is safer. High voltage pulse discharge lithotripsy equipment mainly uses pulse transformers and corresponding steep circuits to obtain high voltage and steep pulse,so the circuit is simple,the manufacturing cost is low and the economy is good.