具有压力检测功能的电动吻合器钉砧结构设计与实验研究

Structural Design and Experimental Study on Electric Stapler Anvil with Pressure Sensors

摘要: 胃肠道微创手术是目前应用最为广泛的微创手术之一，其可以减少病人的术后痛苦且恢复时间相较于传统手术更短，但由于其手术过程缺乏开放式手术的直接反馈，导致医生容易误操作，造成术后后遗症。因此本文设计了一种可拆卸式的多功能检测钉砧，通过内置力和阻抗传感器，完成了压力传感器的研发及其压力值的矫正，可以降低医生的主观判断以及对手术结果的误差率。通过实验验证，压力检测钉砧的系统采样率为50 SPS，系统的稳定性误差为0.543%，校准量程为0~60 N，压力的最小分辨率为0.3 N。电动吻合器压力检测钉砧具有良好的测量精度，系统稳定性满足设计要求，可以更换钉仓重复使用。

Abstract: Minimally invasive surgery of gastrointestinal tract is one of the most widely applied minimally in-vasive surgeries. Compared with traditional surgery, it can reduce postoperative pain and shorten the recovery time. However, due to the lack of direct feedback of open surgery, doctors are prone to misoperation, resulting in postoperative sequelae. Therefore, this paper designed a replaceable multifunctional detection nail anvil to achieve the internally installed force sensor and impedance sensor, and completed the research of pressure sensors and correction of pressure value, so as to reduce the adverse impact of doctors’ subjective judgment on surgical results. The experimental results show that the sampling rate of the system is 50 SPS, the stability error of the system is 0.543%, the calibration range is 0~60 N, the minimum pressure resolution is 0.3 N. The experi-mental results show the good measurement accuracy of the device, and the system detection is rel-atively stable, what’s more, the nail anvil can be reused after replacing nail bin and disinfection.