The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Design of Noninvasive Arterial Blood Pressure Measurement System by Using Double-Cuffs Oscillometric Method

이중 커프 오실로메트릭법을 이용한 비침습 동맥압 측정시스템의 설계

  • 이필재 (건국대 의학공학부) ;
  • 이영재 (건국대 의학공학부) ;
  • 김동준 (청주대 공대 전자정보공학부) ;
  • 이재호 (건국대 의학공학부) ;
  • 임민규 (건국대 의학공학부) ;
  • 이정환 (건국대 의료생명대 의학공학부, 건국대 의공학실용기술연구소)
  • Received : 2012.04.05
  • Accepted : 2012.05.07
  • Published : 2012.06.01
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Abstract

In this study, a new blood pressure measuring system was proposed and implemented. An additional small-cuff was placed on the center of a inner cuff to measure morphological signals and new oscillometric ratio. The proposed BP-measuring system is composed of an external cuff, an inner cuff and a small-cuff. Oscillation signal from small-cuff is interpolated with 7th-order fitting polynomials and SBP, DBP ratio were 22.2% and 87.7%. Experimental data were gathered from 20 volunteers ($25{\pm}4$ years) and arterial blood pressure values were compared with auscultation, sphygmomanometers, small-cuff and inner-cuff. As a result, the difference in systolic BP between auscultation and the small-cuff was 1.93(${\pm}1.28$) mmHg, and the inner-cuff was 4.53(${\pm}4.39$) mmHg, and sphygmomanometer was 6.68(${\pm}3.99$) mmHg, and the corresponding difference in diastolic BP was 2.50(${\pm}2.04$) mmHg, 3.50(${\pm}3.19$) mmHg, 7.35(${\pm}5.62$), respectively.

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References

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