血液体外循环治疗系统中的血浆泄漏监测

Plasma leakage monitoring for the blood circle treatment system

介绍了血液体外循环治疗系统的技术特征及工作原理。在血浆紫外吸收光谱的实验基础上,开发出与体外血液循环治疗系统配套的血浆泄漏动态监测装置。系统采用虚拟仪器技术,在实现LabVIEW驱动普通数据采集卡并在此基础上进行系统软件设计。对血浆浓度连续变化的废弃液监测实验和同一血浆浓度废弃液的连续监测实验表明:此系统具有较高的灵敏度及良好的稳定性。结论表明基于紫外吸收光谱的血浆泄漏监测系统用于体外血液循环治疗仪治疗过程中的血浆泄漏监测是完全可靠的。

This paper introduces the working principle of the blood circle treatment system outside the body. A monitoring instrument of plasma leakage suited for the blood circle treatment system outside the body is developed based on the absorption spectrum experiments of plasma leakage. Photoelectric detection technology and virtual instrumentation are utilized in the development. A series of detecting experiments of waste solution containing plasma with continuously changing concentration show the monitoring system possesses a relatively high sensitivity. Moreover, the experiments of continual detection with plasma concentration at one certain point indicate the monitoring system has a quite good stability. The monitoring instrument is adapted to dynamically detecting the plasma leakage when the blood circle treatment system outside the body is working.