Development of Multi-channel Biotelemetry System for Advanced Emergency Medicine

针对先进急救医学，研制了一种多通道数据传输系统。该系统可以将移动救护车上的彩色图像、音频信号和患者的心电、血压等生物信号发送到医院的急诊室。有了这个系统，医院的医生可以了解救护车上病人的情况，并可以向救护车上的辅助医务人员发出治疗指令。他们可以在救护车上开始进行法律禁止的高级治疗，而不需要有执照的医生的指示。本研究的过程和结果如下：(1)确定了在一个主要为语音通信设计的通用窄带通信网中传输多种信息的技术难点和问题。开发了解决这些问题的技术。(2)研制了一套实验系统。它由一个移动状态…组成更多的人将被安装在救护车上，并在医院的急诊室设立一个固定的车站。通过移动通信网络将两者连接起来。(3)移动台安装在车内，在移动的车上进行传输实验。为了考察地形、高楼和恶劣天气对变速器的影响，在可想象的不利条件下重复进行变速器实验。传输的数据质量在一定程度上有所恶化。研究了利用移动卫星通信将该技术扩展到更广泛的全球范围的可行性。结果表明，通过解决卫星通信链路传输延迟问题，实现广域急救是可行的。通过卫星通信实验，验证了该系统的可行性。(6)将所开发的系统安装在札幌市消防局的一辆作战救护车上，验证了该技术的实用性。结果，一位急诊专科医生给出了满意的评价。较少

For advanced emergency medicine, a multi-channel data transmission system was developed. This system can send the color image, audio signal and biosignals of a patient such as electrocardiograms and blood pressures form moving ambulance to an emergency room of a hospital. With this system, the medical doctor in a hospital can understand the condition of the patient in an ambulance and can give instructions of treatment to a paramedic staff in the ambulance. They can start the advanced treatments in the ambulance which have been legally prohibited without the instruction of a licensed medical doctor. The process and the results of this resarch are as follows.(1) The technical difficulties and problems were identified to transmit many kinds of information through a common narrow-band communication network which has been designed mainly for vocal communications. The techniques to overcome these problems were developed.(2) An experimental system was developed. It consists of a mobile stati … More on to be mounted in an ambulance and a fixed station in an emergency room in a hospital. They were connected by a mobile communication network.(3) The mobile station was equipped in a car and transmission experiment was conducted from a moving car. There was no problem found in the transmission from the moving car in a regular running condition.(4) To examine the effects of terrain, high buildings and bad weather, the transmission experiments were repeated in conceivable adverse conditions. The quality of transmitted data was deteriorated to some extent. However, it was confirmed that the signal quality was still satisfactory for practical use in emergency medicine.(5) The feasibility was investigated to extend this technique to cover much wider global area using movile satellite communication. It was shown that the wide-area emergency care was feasible by solving the problem of transmission delay due to satellite communication link. Through the experiment using the satellite communication, this feasibility was verified.(6) The developed system was equipped on an operating ambulance of Sapporo Fire Department, and the practical usefulness of this technique was examined. As a result, the satisfactory evaluation was given by a medical doctor specialized in an emergency medicine. Less