A mobile phone-based ECG monitoring system.
We have developed a telemedicine system for monitoring a patient's electrocardiogram during daily activities. The recording system consists of three ECG chest electrodes, a variable gain instrumentation amplifier, a low power 8-bit single-chip microcomputer, a 256 KB EEPROM and a 2.4 GHz low transmitting power mobile phone (PHS). The complete system is mounted on a single, lightweight, chest electrode array. When a heart discomfort is felt, the patient pushes the data transmission switch on the recording system. The system sends the recorded ECG waveforms of the two prior minutes and ECG waveforms of the two minutes after the switch is pressed, directly in the hospital server computer via the PHS. The server computer sends the data to the physician on call. The data is displayed on the doctor's Java mobile phone LCD (Liquid Crystal Display), so he or she can monitor the ECG regardless of their location. The developed ECG monitoring system is not only applicable to at-home patients, but should also be useful for monitoring hospital patients.
Iwamoto
Junichi
J
Dept. of Electronics, Hiroshima Inst. of Technology, Hiroshima 731-5193, Japan.
Yonezawa
Yoshiharu
Y
Maki
Hiromichi
H
Ogawa
Hidekuni
H
Ninomiya
Ishio
I
Sada
Kouji
K
Hamada
Shingo
S
Hahn
Allen W
AW
Caldwell
W Morton
WM
D000669:Amplifiers, Electronic; D040421:Cell Phone; D003936:Diagnosis, Computer-Assisted / Q000295:instrumentation* / Q000379:methods; D015716:Electrocardiography, Ambulatory / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D016247:Information Storage and Retrieval / Q000379:methods*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D017216:Telemedicine / Q000295:instrumentation* / Q000379:methods; D014584:User-Computer Interface