1.Application of wireless sensor networks in healthcare.
Yiming LI ; Bin LI ; Mingli QIAN ; Longchen WANG
Chinese Journal of Medical Instrumentation 2013;37(5):351-354
This paper introduces general architecture of wireless sensor networks architecture and application in healthcare, discusses the application direction which is urgent need to expand in medical field.
Telemedicine
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methods
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Wireless Technology
2.Regulation Considerations of Medical Devices with Wireless Technology.
Xiaoling WANG ; Shuai NIU ; Zhizhen ZHONG
Chinese Journal of Medical Instrumentation 2020;44(3):258-262
Wireless technology has been widely used in medical devices and has brought convenience to medical care. However, wireless medical devices face risks such as data security and radio frequency interference. This study highlights safety and effectiveness evaluation of wireless medical devices, and discusses technical characteristics and regulation requirements, providing references for industry development and regulation.
Computer Security
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Wireless Technology
3.Design and Implementation of a Programmable Wireless Neural Stimulation System.
Zhang ZHANG ; Wencheng YU ; Ye TAN ; Jianmin ZENG ; Guangjun XIE
Chinese Journal of Medical Instrumentation 2016;40(1):30-32
The paper proposes and realizes a programmable wireless neural stimulation system which can be used as a solution of functional electrical stimulation to treat neural diseases. The system is composed of two parts: controller and neural stimulator. The controller can transmit pulse parameters to the stimulator wirelessly, and the stimulator can generate bidirectional pulses with charge balance. The simulator takes use of ADCs to sample on the bidirectional pulse output, which compared with preset amplitude to the DAC output voltage to realize the voltage calibration. Through the test, the whole system works stably and the output of the biphasic charge balanced circuit is definite. The stimulator output ranges from 0 to 5 V ajustably, and the frequency ranges from 1 Hz to 200 Hz ajustably, while the pulse width ranges from 500 μs to 1500 μs ajustably. The duration of the stimulation can be set from 10 s to 10 min.
Electric Stimulation
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instrumentation
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Equipment Design
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Wireless Technology
4.The Development of Information Centralization and Management Integration System for Monitors Based on Wireless Sensor Network.
Xiu XU ; Honglei ZHANG ; Yiming LI ; Bin LI
Chinese Journal of Medical Instrumentation 2015;39(4):257-260
Developed the information centralization and management integration system for monitors of different brands and models with wireless sensor network technologies such as wireless location and wireless communication, based on the existing wireless network. With adaptive implementation and low cost, the system which possesses the advantages of real-time, efficiency and elaboration is able to collect status and data of the monitors, locate the monitors, and provide services with web server, video server and locating server via local network. Using an intranet computer, the clinical and device management staffs can access the status and parameters of monitors. Applications of this system provide convenience and save human resource for clinical departments, as well as promote the efficiency, accuracy and elaboration for the device management. The successful achievement of this system provides solution for integrated and elaborated management of the mobile devices including ventilator and infusion pump.
Computer Communication Networks
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Computers
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Internet
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Wireless Technology
5.Research on swallowable camera-capsules of gastrointestinal wireless endoscope.
Si-jie ZHANG ; Cheng-lin PENG ; Xiao-lin ZHENG ; Yan LIU ; Xi-tian PI ; Wen-sheng HOU
Chinese Journal of Medical Instrumentation 2005;29(5):328-330
The swallowable camera-capsule,described in the aper, 11 mm in diameter and 30 mm in length , contains a CMOS image sensor, an optical system, a battery, a light source, a transmitter, a antenna and so on. The CMOS image sensor and its driving circuit can be miniaturized with MEMS technology. Image signal can be transmitted by analog or digital way. Image signal can be wirelessly transmitted through serial data interface. Finally, the processing technics of the capsule's crust is introduced.
Capsule Endoscopes
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Equipment Design
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Wireless Technology
6.Design and Implementation of Medical Wireless Gateway Based on Several Communication Protocols.
Yipeng XING ; Guojing WANG ; Yalei LU ; Weidong WANG
Chinese Journal of Medical Instrumentation 2018;42(1):31-34
We designed a multi-functional medical wireless gateway based on Zigbee Bluetooth and WiFi Technology to monitor the medical physiological status of subjects in real time. On the one hand, the gateway acts as the Zigbee coordinator, organizing the Zigbee network and controlling multiple medical digital terminals. On the other hand, the gateway implements a heterogeneous wireless network. It establishes the communication between the medical digital terminals and the host computers or hand-held devices. In addition, we developed a display interface based on the LabVIEW platform, implemented the display and storage of various physiological data on the host computer, and verified the availability of the medical wireless gateway.
Computer Communication Networks
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Monitoring, Physiologic
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Wireless Technology
7.Design of Remote Multi-part Personal Radiation Dose System Based on Bluetooth Communication Module.
Guangguang YAN ; Ting ZHANG ; Jinlin GONG ; Wenjie LI ; Chunhua SHI
Chinese Journal of Medical Instrumentation 2020;44(1):38-41
OBJECTIVE:
A remote multi-part personal radiation dose detection system is designed with ATmega32A single chip microcomputer as the control core.
METHODS:
First of all, the geiger counter tube module collects the radiation signal of the surrouding environment. Secondly, using ATmega32A Microprocessor of Slave computer to calculate the collected signal. Finally, it is sent to the host receiving device or mobile APP through Bluetooth module,so as to realize real-time detection of radiation data, remote transmission and security alarm.
RESULTS:
The system is measured in the same environment as the RG1100 radiometer, with a maximum difference of 0.03 μSv/h.This shows that it can stably realize the functions of radiation measurement, monitoring, alarm, remote connection and multimodal display.
CONCLUSIONS
The system has the advantages of good portability (easy to carry), low power consumption, accurate measurement and so on. It has certain reference value and practicability.
Equipment Design
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Microcomputers
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Radiation Dosage
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Wireless Technology
8.Mobile Sensor Application for Kinematic Detection of the Knees.
Tossaphon JAYSRICHAI ; Areerat SUPUTTITADA ; Watcharapong KHOVIDHUNGIJ
Annals of Rehabilitation Medicine 2015;39(4):599-608
OBJECTIVE: To correctly measure the knee joint angle, this study utilized a Qualisys motion capture system and also used it as the reference to assess the validity of the study's Inertial Measurement Unit (IMU) system that consisted of four IMU sensors and the Knee Angle Recorder software. The validity was evaluated by the root mean square (RMS) of different angles and the intraclass correlation coefficient (ICC) values between the Qualisys system and the IMU system. METHODS: Four functional knee movement tests for ten healthy participants were investigated, which were the knee flexion test, the hip and knee flexion test, the forward step test and the leg abduction test, and the walking test. RESULTS: The outcomes of the knee flexion test, the hip and knee flexion test, the forward step test, and the walking test showed that the RMS of different angles were less than 6degrees. The ICC values were in the range of 0.84 to 0.99. However, the leg abduction test showed a poor correlation in the measurement of the knee abduction-adduction movement. CONCLUSION: The IMU system used in this study is a new good method to measure the knee flexion-extension movement.
Exercise Test
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Hip
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Knee Joint
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Knee*
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Leg
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Walking
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Wireless Technology
9.Implementation of ECG Monitoring System Based on Internet of Things.
Chinese Journal of Medical Instrumentation 2015;39(6):418-420
In order to expand the capabilities of hospital's traditional ECG device and enhance medical staff's work efficiency, an ECG monitoring system based on internet of things is introduced. The system can monitor ECG signals in real time and analyze data using ECG sensor, PDA, Web servers, which embeds C language, Android systems, .NET, wireless network and other technologies. After experiments, it can be showed that the system has high reliability and stability and can bring the convenience to medical staffs.
Electrocardiography
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Internet
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Monitoring, Physiologic
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Reproducibility of Results
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Wireless Technology
10.Wireless human body communication technology.
Journal of Biomedical Engineering 2014;31(6):1389-1393
The Wireless Body Area Network (WBAN) is a key part of the wearable monitoring technologies, which has many communication technologies to choose from, like Bluetooth, ZigBee, Ultra Wideband, and Wireless Human Body Communication (WHBC). As for the WHBC developed in recent years, it is worthy to be further studied. The WHBC has a strong momentum of growth and a natural advantage in the formation of WBAN. In this paper, we first briefly describe the technical background of WHBC, then introduce theoretical model of human-channel communication and digital transmission machine based on human channel. And finally we analyze various of the interference of the WHBC and show the AFH (Adaptive Frequency Hopping) technology which can effectively deal with the interference.
Computer Communication Networks
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Humans
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Models, Theoretical
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Wireless Technology