Objective To get rid of the toxins from the blood when the blood pass through the hemoperfusion apparatus. Methods The circuit of the rejected hemodialysis machine was modified to make its monitoring unit and blood pump available. The blood was drawn from the body, and then the hemoperfution apparatus substituted as the dialyser. Results The application to 130 cases proved that the apparatus behaved well. Conclusion The modified machine can meet the desired requirements.

Objective To design a system that is many X-ray machines automatic operation,timely exposure to realize the sharing of power supply. Methods A circuit is designed based on the normal hospital conditions and go with proper control algorithm. The fifty-one series SCM were made use of in the hardware circuits,and validated by X-ray machine simulation tests which simplify the X-ray exposure to the process of relay controlling,which software is based on interrupt mechanism. Results The program could effectively control the exposal of many X-ray machines and the priority was indicated by the experiments. Conclusion Under the prerequisite of the system does not affect the exposure parameters of X-ray machine accuracy,the system can realize a number of X-ray machine's power-sharing,at the same time allow only a single X-ray exposure and use of the interrupted source. And it can make exposure many original X-ray machines can become closely related with high security,proper order and high performance,which has prominent benefits on areas with bad power and equipment conditions.