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영구자석과 홀소자로 구비된 집게형 맥진기를 이용한 맥진파형 측정과 분석
손일호(Il-Ho Son),이상석(Sang-Suk Lee) 한국자기학회 2011 韓國磁氣學會誌 Vol.21 No.3
We measured signals at the “Guan” region of a radially arterial pulse using the prototype of a clamping pulsimeter equipped with a Hall effect device, which is passed signals through the voltage detecting hard ware system. The important four different measuring times of the period, systolic, reflective, and notch peaks for a temporally pulse signal are obtained and compared each other from the analysis for an arbitrary pulse wave of one position of small size permanent magnet. It is possible to measure the reproducible pulse rate and blood pressure by using the cuffless clip type pulsimeter without an unpleasant oppressive feeling due to the use of pressurization.
안명천(Myung-Cheon Ahn),최종구(Jong-Gu Choi),손일호(Il-Ho Son),이상석(Sang-Suk Lee),김근호(Kuen-Ho Kim) 한국자기학회 2010 韓國磁氣學會誌 Vol.20 No.3
In order to get the precise blood pressure and pulse number in the cuffless status, the wrist wearable pulsimeter with a portable and small size apparatus using by Hall device is developed. The regression analysis of the pulse wave measured by the testing product of pulsimeter is conducted two equations of the blood pressure algorithm. The estimated values of blood pressure obtained by the cuffless pulsimeter during 5 s are compared with the practical values measured by electronic or mercury liquid blood pressure meters. The standard deviation of the estimated value and the practical value for the high blood pressure and the low blood pressure were 12.1 and 5.9, respectively, which have the neighborhood values of BP International Standard. The detail analysis of a pulse wave measured by cuffless wrist wearable detecting the changes of the magnetic field can be used to develop a new diagnostic algorithm of blood pressure applying for oriental medical apparatus like as the wrist wearable pulsimeter.