In view of the special disadvantageous conditions in battlefield, a portable pneumatic gas -control cardiopulmonary resuscitator is developed for the critical wounded care in battlefield, which satisfies the requirements of medical physiological parameters.

This paper introduces the developme nt and the basic principle of medical ventilator.The development of control theo ry of medical ventilator is also mentioned.Two common ventilator controllers wi th respective advantages and disadvantages,PID controller and fuzzy controller,a re specified.

This paper introduces a kind of tele-acquisition system for temperature and humidity data based on the technology of power line carrier,and presents its hardware interface and software design.With the application of the spread spectrum carrier and the power line communication,this system has such advantages as reliable transmission,low cost and high practicality.

According to the principle of physical therapy, this paper discusses the feasibility to apply electromagnetic physiotherapy technology and IF modulation current technology to developing the computerized physical therapy instrument for bone injury. Such information of the instrument is introduced as its function, design principle, hardware structure and program composition.

The military portable ECG for triage is a kind of minitype monitoring equipment for life information for the purpose that the ambulanceman carry through first aids in frontline. Life information of the wounded will be acquired exactly and quickly applying with this equipment, then quickening the triage and reducing the casualties. The system is based on C8051F310 single chip microcomputer, applying with high accuracy, low offset drift instrumentation amplifier AD620 and ultra low power LCM LMS019 to display real-time and accurate ECG signal sampled. The equipment is easy to use and inexpensive, suitable for mass requirement of our field army.

Several short range radio communication standards get involved in, including non-standard protocol radio, Bluetooth protocol, Zigbee protocol. The present situation, particularly the advantages and disadvantages of medical monitoring systems based on short range radio communication in China and other countries are discussed. New technology and standard in this field, and their effects on medical monitoring system are also available.

Ultrasonic is efficacious in curing bone injury.A suit of ultrasonic generator is developed for bone injury,which has a simple structure with good reliability.Besides the design principle and system scheme,the mechanism and application of ultrasonic therapy together with the key techniques such as wave-form producing,power adjusting and load coupling are analyzed.

Short range radio communication based on non-standard protocol is suitable for transmission in short distance,for it's low cost,power consumption and easy-to-develop.So,an individual healthcare monitoring system is designed on the basis of non-standard wireless communication chip nRF24L01.When compared with that of standard wireless communication,the system is gifted with higher performance,lower power consumption,and better communication capability.

Objective To develop a portable end-tidal carbon dioxide monitor for the patient's physiological monitoring during the process of the first aid and transport.Methods MCU was used as the core of the control system to communicate with the ETCO2 detection module and the SD memory module. The power supply module and software system were realized for the monitor.Results The monitor had high stability, reliability and performances.Conclusion The monitor meets the desired requirements, and can be used for the monitoring of the patients during first aid or transportation.

High frequency ventilators(HFV) are introduced in such aspects as its contribution to the development of the ventilation, phylogeny, working principle in the physiological field, the advantages over normal-frequency ventilation, three common HFV modes and their application to medical therapy. The present situation of HFV is analyzed as well as it's developing trends and prospects.