Browsing by Author "Iwamoto, Junichi"
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- ItemA mobile phone-based ecg and heart sound monitoring system - biomed 2011.(2011-04-28) Iwamoto, Junichi; Ogawa, Hidekuni; Maki, Hiromichi; Yonezawa, Yoshiharu; Hahn, Allen W; Caldwell, W MortonWe have developed a telemedicine system to monitor a patient s electrocardiogram ECG and heart sounds PCG during daily activity The complete system consisting of an ECG recorder an accelerometer and a 2 4 GHz low power mobile phone is mounted on three chest sensing electrodes The accelerometer records the PCG produced by closing of the mitral and aortic valves S1 and S2 The sampled ECG and PCG are stored in the system for two minutes and continuously updated When a patient feels heart discomfort such as angina or an arrhythmia he she pushes the data transmission switch on the system The ECG and PCG for the next two minutes are stored in the system and then the system then sends the four minutes of stored data directly to a hospital server computer via the 1 9 GHz low power mobile phone These data are stored on the server and then downloaded to the physician s Java configured mobile phone The physician can then check the patient s cardiac condition regardless of patient or physician locations and then take appropriate actions
- ItemA mobile phone-based ECG monitoring system.(2006-07-04) Iwamoto, Junichi; Yonezawa, Yoshiharu; Maki, Hiromichi; Ogawa, Hidekuni; Ninomiya, Ishio; Sada, Kouji; Hamada, Shingo; Hahn, Allen W; Caldwell, W MortonWe 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
- ItemA new mobile phone-based ECG monitoring system.(2007-05-09) Iwamoto, Junichi; Yonezawa, Yoshiharu; Ogawa, Hiromichi Maki Hidekuni; Ninomiya, Ishio; Sada, Kouji; Hamada, Shingo; Hahn, Allen W; Caldwell, W MortonWe have developed a system for monitoring a patient s electrocardiogram ECG and movement during daily activities The complete system is mounted on chest electrodes and continuously samples the ECG and three axis accelerations When the patient feels a heart discomfort he or she pushes the data transmission switch on the recording system and the system sends the recorded ECG waveforms and three axis accelerations of the two prior minutes and for two minutes after the switch is pressed The data goes directly to a hospital server computer via a 2 4 GHz low power mobile phone These data are stored on a server computer and downloaded to the physician s Java mobile phone The physician can display the data on the phone s liquid crystal display
- ItemA remote access ecg monitoring system - biomed 2009.(2009-04-16) Ogawa, Hidekuni; Yonezawa, Yoshiharu; Maki, Hiromichi; Iwamoto, Junichi; Hahn, Allen W; Caldwell, W MortonWe have developed a remotely accessible telemedicine system for monitoring a patient s electrocardiogram ECG The system consists of an ECG recorder mounted on chest electrodes and a physician s laptop personal computer This ECG recorder is designed with a variable gain instrumentation amplifier a low power 8 bit single chip microcomputer two 128KB EEPROMs and 2 4 GHz low transmit power mobile telephone When the physician wants to monitor the patient s ECG he she calls directly from the laptop PC to the ECG recorder s phone and the recorder sends the ECG to the computer The electrode mounted recorder continuously samples the ECG Additionally when the patient feels a heart discomfort he she pushes a data transmission switch on the recorder and the recorder sends the recorded ECG waveforms of the two prior minutes and for two minutes after the switch is pressed The physician can display and monitor the data on the computer s liquid crystal display