手术体位固定气囊的自动压控系统设计

Design of Pressure Autocontrol System for Operation Decubitus Fixation Gasbag

提出了一个改进常规手术体位固定缺陷的方案 :用数只充气的气囊取代软枕作为患者体位固定的支撑 ,设计了相应的气囊充气自动压控系统 .该系统是一个闭环的控制系统 :手术前医生可根据不同的患者体形和手术部位进行初始设置 ;手术过程中 ,系统能连续动态地检测气囊的工作压力和患者的部分生理参数 ,并将检测结果与设定值进行比较 ,通过电磁阀和气泵对气囊的压力进行动态调整 .与常规软枕加约束带的体位固定方式比较 ,该系统具有使用方便的特点 。

In order to improve decubitus fixation in general operation, we present a method: using several puffed gasbags as the support of the patient decubitus fixation, and design a autocontrol system to adjust the pressure of gasbags. This system is a closed loop control system. It enables us to setup initial air pressure before a surgical operation, according to the difference of patient decubitus and operation position. During operation the system can dynamically detect the gasbag pressure and part of patient biosignals, and then to adjust the gasbag pressure by a result compared with the initial value. By contrast with the general decubitus fixation method which uses the soft pillow and the belt, this system is convenient and can void the syndrome caused by local pressure.