In recent years, the integration of medical business applications and network platforms is gradually becoming a new direction for the development of medical information . The development of future medical information systems will tend to be the data fusion of various medical health subsystems and the unified management of health archive data centers to ensure the maximum utilization of medical health resources.
As an important means of displaying medical information, medical terminals have become the focus of research and development by relevant departments. With the continuous improvement of medical information, the types of medical terminal equipment are becoming more and more abundant, and the number is growing rapidly, and it is moving toward mobileization and miniaturization. The direction of network and open interfaces has developed rapidly.
Bringing the "doctoral distance" close is the key
As far as the development of medical terminals is concerned, early medical terminals play an important role in the examination, treatment and diagnosis of diseases. The main applications include hospital wards, ICU (emergency monitoring centers), medical examination centers, and some community medical services. Professional medical institutions such as the center.
With the development of electronic technology and network technology, new features have some medical terminals are commonly used, such as a digitized medical assistance terminal, enabling the diagnosis, the diagnostic biosensor, an instrument robotic diagnosis function; network terminal medical implements Remote transmission of medical data; family and community medical terminals make home self-monitoring and diagnosis a reality; non-invasive and minimally invasive medical terminals have become an important direction for the development of medical terminals in the future.
As far as the current medical terminal is applied in China, there are three types of terminals that have a wide range of applications and good results. For example, mobile phones with medical PDA functions used by some hospitals in Wuxi City, Jiangsu Province can realize remote mobile consultation by sharing medical examination pictures, which greatly narrows the distance between doctors and patients. Not only that, the terminal's "baby sign recognition" function can help the maternal and child hospitals solve the problems of newborn baby identification, baby misguided and fraudulent theft by wearing an RFID tag ring for the baby. Specifically, the medical PDA is designed and manufactured using EDA technology, built-in wireless LAN and RFID identification equipment, and is equipped with dedicated software. The medical staff can use this terminal to interact with the hospital's HIS system or hospital management system to view medical record information, write medical records, issue medical orders, record patient requirements, etc. in front of the bed, and transmit them to the HIS database in real time.
Secondly, the portable physical information monitoring terminal is also widely used in medical informationization. For example, China Unicom's "Smart Medical Emergency Monitoring" system is based on portable ECG monitors, video and other sensing devices, and receives medical sensing terminals to collect data for analysis, processing and transmission, and then through GSM or WCDMA networks. The video, physical signs and geographical location information are transmitted to the back-end service system, so that the medical institutions can realize comprehensive services for remote medical emergency monitoring, diagnosis and consultation. Nowadays, the new portable ECG monitor can not only record short-term abnormal heart information anytime and anywhere, but also can quickly transmit the collected physiological signals to the back-end service platform to realize single-machine measurement, plug-and-play and other functions. Community doctors and specialist doctors provide a fast communication channel.
Furthermore, by connecting one or more medical monitors to the health management terminal by wired or wireless means, simultaneous acquisition and storage of multi-channel biomedical signals can be realized, and the medical institution can perform analysis and processing by using the built-in medical monitoring module, and can be at the terminal. The screen displays the measurement results. For example, the “Personal Health Management†service provided by some health service providers now integrates the front-end health management terminal and the background management service. The user can monitor the “physical detection and sensing terminal†built-in or separated by the terminal. Sign the information and send the information to the corresponding health monitoring center through the 3G network, so as to obtain personalized monitoring service, long-term health record management service and regular health monitoring report anytime and anywhere to effectively prevent disease.
Technical level needs to strengthen "defense in depth"
While a range of medical information terminals are widely used, there are some security issues and technical challenges.
The first thing that matters is data security. On the one hand, medical terminals are vulnerable to attack, and terminal security is the weak point of the overall security of digital medical systems; on the other hand, because health data involves user privacy, relevant personnel should beware of data leakage and other issues. Therefore, it is necessary to achieve defense in depth and design a reliable encryption and decryption algorithm and key management mechanism.
In addition, due to the large amount of data collected by medical terminals, medical data is very important for clinical diagnosis. In order to avoid problems such as tampering or elimination, it is necessary to establish a large storage capacity and a reliable data transmission and storage mechanism to ensure data integrity. And accuracy; since the terminal device may exist in other wireless network coverage, it should ensure that it does not interfere with other networks, and should also avoid interference from other networks; and in the case of a large concentration of medical terminals, in order to ensure real-time data transmission Medical institutions must solve the problem of how to avoid congestion and how to implement congestion control. Finally, in order to achieve accurate mutual recognition and sharing of medical data between different terminals, and to avoid information closure and duplication of investment, relevant organizations must establish data sharing standards. .
At present, the medical informatization process is changing the management and service model of the medical industry , and with the gradual maturity of various new technologies, the development of medical terminals will have new changes. The author believes that the future medical information terminal will present the following trends: First, digital, medical terminals will realize the collection of information, digital transmission of information, in order to facilitate the use of later data; Second, interface standardization, the future to reduce multi-type multi-parameter medical The data integration and comprehensive utilization of the terminal, the relevant departments need to standardize the interfaces of various medical terminals; third, the combination of network, medical terminal and communication module has become the realization mode of some medical terminal products, on the one hand, medical data is realized. Real-time remote transmission, on the other hand, realizes remote control and intervention of medical terminal background; Fourth, low cost, on the basis of ensuring the accuracy of medical monitoring data, reducing the cost of medical terminals and miniaturization become the future development trend.
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