基于嵌入式的术后引流负压吸引器的设计

Design of negative pressure aspirator after operation based on embedded system

为了稳定精确地将病人术后腹腔内积累的各种脏器分泌液排出体外,提出一种基于嵌入式系统的负压吸引器。该系统采用气压传感器、重力感应器、PH值传感器、电磁阀和薄膜泵等模块,通过检测病人体内的腔压来调整负压实现体液的引流,并能实时监控病人排出液的各项参数。经过测试,该系统能动态控制负压引流并精确测量排出体液的参数,具有稳定可靠的特性。

In order to help many patients to excrete various secretions of fluid which is accumulated in the abdominal cavity after operation accurately and stably, a negative pressure aspirator based on embedded system is proposed. The system consists of the bareceptor, gravity sensing system, PH value sensor, electromagnetic valve and membrane pump. By detecting the pressure of abdominal cavity, the system regulates the drainage process. At the meantime, the system measures and calculates various parameters of secretion of fluid. After function test, the system controls the drainage process dynamically and measures parameters of secretion of fluid accurately. The system is proved to be stable and reliable through function test.