Development of Pulse Wave Analysis Model with Skin Effect

손목의 피부특성을 고려한 맥상파 해석모델 개발

  • Shin, Sang-Hoon (Depart. of Oriental Biomedical Engineering, Sangji University)
  • 신상훈 (상지대학교 보건과학대학 한방의료공학과)
  • Received : 2011.07.18
  • Accepted : 2011.08.12
  • Published : 2011.08.31

Abstract

Objectives: The purpose of this study is to develop the pulse wave analysis model with the palpation pressure and the skin effect. Methods: The position of pulse diagnosis was modeled with elastic string system. The skin was modeled with the elastic string, the palpation pressure with tension in the string, and the blood vessel pressure with external force on the string. Using the wave equation in the physics, the simplified pulse model was transformed to the mathematical model. Results: To the verification of the model, the effects of the palpation pressure and the skin effect were tested. Conclusions: There was optimal palpation pressure, describing the exact vessel pressure pattern and maximizing the amplitude of the skin displacement. For the optimal condition, the increased palpation pressure was needed with the increased skin thickness. Therefore, the developed pulse wave analysis model showed the good results.

Keywords

References

  1. 이봉교. 맥을 파형으로 표시하는 맥진계, 실용신안 (출원일: 1968년7월8일, 공고번호: 제1010호).
  2. Womersley JR. Method for the calculation of velocity, rate of flow and viscous drag in arteries when the pressure gradient is known. J Physiol. 1955; 127: 553-563. https://doi.org/10.1113/jphysiol.1955.sp005276
  3. Womersley JR. The mathematical analysis of the arterial circulation in a state of oscillatory motion. Wright Air Development Center Technical Report WADC-TR. 1957; 56-614.
  4. Womersley JR. Oscillatory flow in arteries: The constrained elastic tube as a model of arterial flow and pulse transmission. Phys Med Biol. 1957; 2: 178-187. https://doi.org/10.1088/0031-9155/2/2/305
  5. Womersley JR. Oscillatory flow in arteries. II. The reflection of the pulse wave at junctions and rigid inserts in the arterial system. Phys Med Biol. 1958; 2: 313-323. https://doi.org/10.1088/0031-9155/2/4/301
  6. Avolio AP. Multi-branched model of the human arterial system. Med Biol Eng Comput. 1980; 18: 709-718. https://doi.org/10.1007/BF02441895
  7. SH Shin, YB Park. Effects of changes in the physical properties of the central elastic artery on haemodynamic characteristics during ageing. Proc Inst Mech Eng H. 2009; 223: 525-535.
  8. 신상훈. 맥상분석을 위한 해석모델 연구. 경희대학교 박사학위논문. 2006.
  9. Dennemeyer R. Introduction to partial differential equations and boundary value problems. Newyork, McGraw-Hill. 1983; 170-175.
  10. 신상훈, 임혜원, 박영재, 박영배. 심혈관 노화가 脈象에 미치는 영향. 대한한의진단학회지. 2005; 9: 59-68.
  11. 이전, 이유정, 이혜정, 최은지, 김종열. 통계분석을 통한 한의 맥진에 유용한 파라미터 도출. 대한전기학회정보및제어학술대회논문집. 2006; 244-246.
  12. 龔安特, 顔文明, 李冰星. 試論中醫脈象浮沈的力學內涵. 遼寧中醫雜誌, 1986; 11-13.
  13. 唐亞平, 侯恩存, 戴芳. 體型胖瘦對脈象影響的研究. 中國中醫基礎醫學雜誌, 2009; 15: 387-388.