A Coagulation Mode on Bipolar Electrosurgery Unit Using 350 KHz Frequency and Power Selection

Prastawa Asalim Tetra Putra, B. G. Irianto, T. Indrato, L. Lamidi, Rizki Andriyanto, N. Bouzeghaia
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Abstract

Losing a lot of blood during surgery using a conventional scalpel is something that is highly avoided. The purpose of this study is to replace the conventional scalpel with a tool that utilizes a high frequency whose duty cycle is regulated and then centered at one point. Researchers take advantage of the effect of heat generated by high frequencies which are centered at one point so that it can be used for the process of surgery and coagulation in body tissues so as to minimize the occurrence of a lot of blood loss. Researchers use a high frequency of 350 KHz which is set with a duty cycle of 6% on 94% off and is equipped with 3 levels of power selection and uses forceps as a medium to concentrate high frequencies at one point. The module design consists of a 350 KHz frequency generator, a pulse control circuit to adjust the duty cycle, a power control circuit as a power setting, a driver circuit to combine the frequency with the set power so that different outputs are obtained according to the settings, and an inverter circuit to increase the voltage. In this study, after measuring using an oscilloscope in the driver circuit, the average output amplitude at each low, medium, and high setting was 27.25 Vpp, 28 Vpp, and 28.625 Vpp. The results showed that the bipolar electrosurgery unit (coagulation) module as a whole can replace conventional scalpels so that it can minimize the occurrence of a lot of blood loss during surgery. However, the frequency generator and power selection need to be improved.
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采用350khz频率和功率选择的双极电外科装置的凝固模式
在使用传统手术刀的手术过程中大量失血是高度避免的。本研究的目的是用一种利用高频的工具取代传统的手术刀,这种工具的占空比是可调节的,然后集中在一点上。研究人员利用以一点为中心的高频产生的热量的作用,将其用于手术和机体组织凝固的过程,从而最大限度地减少大量失血的发生。研究人员使用350 KHz的高频,该高频设置为占空比为6%,占空比为94%,配备3级功率选择,并使用镊子作为介质将高频集中在一点。模块设计包括350khz频率发生器、调节占空比的脉冲控制电路、作为功率设置的功率控制电路、将频率与设定功率结合以根据设置获得不同输出的驱动电路、以及增加电压的逆变电路。在本研究中,在驱动电路中使用示波器测量后,在每个低、中、高设置下的平均输出幅度分别为27.25 Vpp、28 Vpp和28.625 Vpp。结果表明,双极电外科单元(凝血)模块作为一个整体可以替代传统手术刀,从而最大限度地减少手术过程中大量失血的发生。但是,频率发生器和功率选择需要改进。
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