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本文就高频电刀的原理和使用中的一些问题以及如何防止烫伤和干扰等作一叙述。工作原理及其特征高频电刀利用高频发生器输出的大电流,在外科手术中作切开、凝固组织之用。在作切开使用时,一般由两只电子管接成推挽电路,产生正弦波振荡电流,振荡频率为1～3兆赫;在作凝固使用时,一般采用火花隙振荡,产生衰减的高频电流。上述两种波形的叠加,将兼有切开和凝固的混合作用。目前,高频电刀正从电子管式向固体电路发展。但使用晶体管的高频电刀,因受半
This article on the principle of high-frequency electric knife and the use of some of the problems and how to prevent scalding and interference for a narrative. Working principle and its characteristics High-frequency electric knife The use of high-frequency generator output current, in surgery for incision, coagulation organizations. In making the use of cutting, generally by the two tubes into a push-pull circuit, resulting in sinusoidal oscillation current, the oscillation frequency of 1 to 3 MHz; for solidification use, the general use of spark gap oscillation, resulting in attenuation of high-frequency current . The superimposition of these two waveforms will have both the effect of mixing of cutting and solidification. At present, high-frequency electric knife from the tube to the development of solid-state circuits. However, the use of high-frequency transistor knife, due to half