Temporal and Spatial Properties of Arterial Pulsation Measurement Using Pressure Sensor Array

Abstract

Conventionally, a pulse taking platform is based on a single sensor, which initiates a feasible method of quantitative pulse diagnosis. The aim of this paper is to implement a pulse taking platform with a tactile array sensor. Three-dimensional wrist pulse signals are constructed, and the length, width, ascending slope, and descending slope are defined following the surface of the wrist pulse. And the pressure waveform of the wrist pulse obtained through proposed pulse-taking platform has the same performance as the single sensor. Finally, the results of a paired samples t-test reveal that the repeatability of the proposal platform is consistent with clinical experience. On the other hand, the results of ANOVA indicate that differences exist among different pulse taking depths, and this result is consistent with clinical experience in traditional Chinese medicine pulse diagnosis (TCMPD). Hence, the proposed pulse taking platform with an array sensor is feasible for quantification in TCMPD.

Stringlike Pulse Quantification Study by Pulse Wave in 3D Pulse Mapping

“…[21][22][23][24][25] It comprises three parts: a displacement detection system, a pulse detection system, and a motorized automatic driving system. In this report, the pulse-taking procedure adopts SP to obtain wrist artery signals.…”

“…This study is intended to propose a novel method to transform the wrist arterial waveforms into a readable quantification of the fingertip sensation of physicians by mimicking their finger reading skill. [21][22][23][24][25] The designed pulse-taking platform comprises one displacement detection system, which mimics or duplicates the pulse-taking displacement of physicians, [22][23][24][25] and one pressure-detection system, which obtains information from the wrist arterial pulse waveforms to the greatest possible extent by duplicating a physician's pulse-taking skill. 21 The consistent pulse conditions acquired from a physician's fingertip sensations will thus be feasible to display.…”

“…The pulse taking procedure for the proposed method is based on simultaneous palpation (SP) with an integrated pulse-taking platform. [21][22][23]27,28 The stringlike pulse and non-stringlike pulse are classified by plain pulse wave (PPW) and dPW. For the PPW, the matched rate in comparison to the physicians' fingertip sensation is 100% in a hypertensive stringlike pulse, 100% in a spring stringlike pulse, and 77% in a non-stringlike pulse.…”

Arterial pressure pulse palpation with the Haptic Lens

“…Wu, et al [3] uses a laser triangulation method to detect skin vibrations. Other methods such as thermal imaging [7], pressure [5] and acoustic-based [6] sensors have also been explored.…”

“…The device is pressed against the palpatory area and the pulse signal is immediately visualized so that the individual can reposition the device until a clear pulse is captured. In addition, when comparing with pressure sensor based methods which use either a single sensor or sensor arrays (9 sensors in [5]) our approach increases the accuracy to the pixel level. Our proposed method is also portable, non-invasive and low cost.…”