Simulation of TCM Pulse Wave at Cunkou Area Based on One-Dimensional Model of Left Upper Extremity

摘要

In order to investigate the mechanism of variation in pulse wave during the pulse diagnosis in cunkou area, a one-dimensional model of left upper extremity is created to simulate the pulse wave under different conditions of finger distribution during pulse taking. The results show that the reflected wave caused by variation in lumen area would increase the pressure in proximal region while decline the pressure in the distal region. With the increasing force, the reflected wave makes the waveforms in three regions; with each associated with different organs in our body. Simulation results had confirmed that the pressure waveform is similar to the lumen cross-section area curves. When the blood flow is basically blocked, findings show that the sharp changes in the blood flow rate that determines the level of blood pressure, and the area curves at blocking site present a negative wave. Meanwhile, the ascending branch of the pulse wave in the distal region spends more time and the curve gets smoother, which had been called pulse-taking piezoresistive effect. This paper promotes clearing the similarities and differences between pulse wave in three regions and the engineering analysis research about traditional Chinese medicine.