基于射频能量的小肠组织焊接算法优化研究

利用基于自制的射频能量设备对胃肠组织焊接算法进行优化研究，通过改变终止电压衰减量降低组织热损伤，以防止组织结痂、碳化现象发生。在实验过程中，通过控制单一变量，完成猪小肠焊接实验，对终止电压进行不同系数的衰减，分别取衰减量（DV）为60%、80%和100%，采用爆破压和热损伤评估焊接结果。经过爆破压和热损伤实验，得出以下结果：当调整电压衰减量为60%、80%和100%时，爆破压分别为9.387±0.423 7KPa、10.17±0.501 3KPa、9.286±0.427 9KPa；热损伤分别为0.376 9±0.019 48cm、0.398 8±0.010 25cm、0.419 4±0.015 01cm。实验表明，在合适的电压衰减系数算法下，热损伤及爆破压均有优化。在实际应用中，应该选取适当的电压衰减系数，才可保证管腔组织闭合后具有较大的爆破压和较小的热损伤范围。

Optimization of Small Intestine Tissue Welding Algorithm Based on Radio Frequency Energy

This paper optimizes the gastrointestinal tissue welding algorithm based on self-made RF energy equipment. By changing the attenuation of the termination voltage， the tissue thermal damage is reduced to prevent tissue crusting and carbonization. In the experiment， by controlling a single variable， the pig small intestine was welded， and the termination voltage was attenuated by different coefficients. The attenuation （DV） was 60%， 80% and 100%， respectively. And thermal damage to evaluate the welding results. After the blasting pressure and thermal damage experiments， the following results were obtained. When the voltage attenuation was 60%， 80% and 100%， the burst pressures were 9.387±0.423 7KPa， 10.17±0.501 3KPa and 9.286±0.427 9KPa， respectively. The thermal damage was 0.376 9±0.019 48cm， 0.398 8±0.010 25cm and 0.419 4±0.015 01cm， respectively. The research shows that under the appropriate voltage attenuation coefficient algorithm， thermal damage and burst pressure are optimized. In practical applications， appropriate voltage attenuation coefficient should be selected to ensure a large burst pressure after the lumen tissue is closed. And a smaller thermal damage range.