全自动血液成分分离转移方法及实现

目的：提出一种全自动血液成分分离转移的方法及其实现装置。方法：由于全血离心后不同成分层血液具有一定色差，因而可利用颜色传感器检测血袋内不同成分血的颜色，以控制全血挤压过程．将不同成分的血液转移到不同的血袋中。当全血袋中的血浆挤压完成后，采用电阻应变片式称重传感器对血浆称重．通过挤压运动实现血浆袋中空气的清除，并利用光敏电阻检测血浆袋中的压强变化来实现自动控制。当全血中各种成分血全部分离完成后，自动热合各血袋的胶管。分离转移装置采用主辅机结构，主机主要负责全血袋中不同成分的血液的分离挤压．而辅机主要负责血浆袋中空气的挤压以及称取血浆质量。结果：实际制作了辅机，用PC作为虚拟主机对辅机的各部分进行了实验调试并改进，电子称重计的精度达到0．5g，而血浆袋中的空气几乎全部清除干净。设计开发了通信协议，用VC6．0实现了主辅机之间的串行通信。结论：该方法及其实现装置可怏捷高效地实现血液不同成分的自动分离转移．可满足各血站自动化的需要。

Method & Implementation for Automatic Blood Ingredient Separating and Transferring

Objective To propose a method ＆ Implementation for automatic blood ingredient separating and transferring. Methods Whole blood could be layered after centrifugal processing,and the color of the layers appeared different certainly. So color sensors could be used to receive different color signals of ingredient blood to control the process of separating whole blood and transfer different blood ingredients to different blood bags. When plasma was extruded out of the whole blood, resistance-strain pressure sensor was used to get the weight, and the air was cleaned out through extrusion movement. Air cleaning automatic control was realized through examining the intensity of pressure in the blood bag by photoconductive resistance. When the process of separating blood finished completely, the glue pipes could be heated automatically. The device adopted main-subsidiary configuration, the master was mostly in charge of separating and transferring blood ingredients of whole blood and the assistor was used to extrude out the air remains in the plasma bag and get the weight of the plasma. Results The assistor was made actually by using a PC as a virtual master to conduct experiments debugging and improve the assistor,and then the precision of electronic weighing reached 0.5g while the air in blood bag was almost cleaned absolutely, A communication protocol was developed and the serial communication between the master and the assistor were realized by VC6.0. Conclusion This method and device can automatically separate and transfer different blood components fast and efficiently,thus meeting the automation needs of the blood station.