Resonance phenomenon during wrist pulse-taking: A stochastic simulation, model-based study of the ‘pressing with one finger’ technique

Ferreira, Arthur de Sá

doi:10.1016/j.bspc.2012.10.004

Cited by 15 publications

(6 citation statements)

References 29 publications

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“…According to our research and previous literature reports [2, 5, 7, 8, 23], we speculated that there might be three cases in the exact Cun position (Figure 3(b)): (1) According to the common way to find Cun position, the exact Cun was located in the position of Cun in traditional Chinese medicine (Figure 3(b1)). At this position, we could touch the pulsation of the superficial palmar branch and the pulsation of part of the radial artery, but the length of the radial artery varied greatly, most of which might be less than one finger wide.…”

Section: Discussionsupporting

confidence: 55%

“…This study suggested the pulse-frequency spectrum at right Guan was a more effective characteristic for dyspepsia patients [4]; however, pulse waveform harmonics based on the resonance theory showed that no marked differences were observed on the identified internal organ among the Chi-Guan-Cun positions. This study suggested that the depth of the radial artery but not the positions should be emphasized for pulse waveform analysis [5]. Although a lot of work has been done on the pulse diagnosis, these are far from enough to explain the rich connotation of the wrist pulse-taking method in traditional Chinese medicine, and there are still many problems to be further studied…”

Section: Introductionmentioning

confidence: 99%

“…Wrist pulse located at wrist is divided into three regions, namely, Cun, Guan, and Chi, which are used in pulse diagnosis to assess the health status of specific internal organs [5]. According to the systematic correspondence between organs and pulses, left Cun is used to detect the health status of the heart/small intestine and right Cun is used to detect the health status of the lung/large intestine in traditional Chinese medicine [1, 6].…”

Section: Introductionmentioning

confidence: 99%

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Anatomy of the Cun Position at Wrist and Its Application in Pulse Diagnosis

Chen

Jiang

et al. 2019

Evidence-Based Complementary and Alternative Medicine

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Information on anatomy of the Cun position at wrist is lacking; whether the blood vessel taking pulse in Cun is the radial artery or the superficial palmar branch is also clinically controversial. The objective was to investigate the boundaries and contents, and the vascular distribution and their pulse points in Cun. Thirty-two upper extremities of 16 human cadavers were investigated for dissection and observation. The boundaries, contents, and blood vessel distribution in Cun were observed; the location of pulse points in Cun was identified; the length of the superficial palmar branch in wrist pulse (L1), the pulp width of the index finger (L2), and the angle between the radial artery and the superficial palmar branch were measured. The results showed that the Cun was located in the region formed by the bulge of the prominent bone proximal to the palm, the radial flexor tendon, the tubercle of scaphoid, and the abductor longus muscle tendon. In this area, the radial artery could be pulsed part in the medial side of the abductor longus muscle tendon, while the superficial palmar branch lied near the surface and was easy to pulse in the lateral side of the radial flexor tendon and the medial side of the tubercle of scaphoid. The ratio of L1 to L2 was 1.2±0.8, and the angle was 23.3±9.9°. The results suggested that it could not be generalized that the blood vessel taking pulse in Cun was the radial artery or the superficial palmar branch; it might depend on the vascular distribution in Cun, the region of finger positioning, and the patient’s pulse condition.

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Section: Discussionsupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Anatomy of the Cun Position at Wrist and Its Application in Pulse Diagnosis

Chen

Jiang

et al. 2019

Evidence-Based Complementary and Alternative Medicine

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“…They are called 'cun', 'guan' and 'chi' in China; but in India, they are known as 'vata', 'pitta' and 'kapha' [18]. Figure 2 illustrates the three pulse points on one hand [24,25]. One commonly used approach used by a TCM practioner is to palpate the three positions by applying different levels of pressure.…”

Section: Pulse Diagnosis Proceduresmentioning

confidence: 99%

Wrist Pulse Feature of Pneumoconiosis and its Application

Zhang

Zhang²,

Wu³

et al. 2022

IEEJ Transactions Elec Engng

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Pneumoconiosis has been the most harmful occupational disease for coal miners for decades and is difficult to cure completely. If this disease can be diagnosed and cured in time, it can be effectively controlled. Currently, the most reliable clinical diagnosis method is using X-ray or high-resolution computerized tomography (CT). Here, we propose a method to diagnose pneumoconiosis using wrist pulse signals. First, a pulse sensor is used to collect wrist pulse signals, then, preprocessing is conducted, and a single period of a pulse signal is separated. Second, a 13-dimensional feature is extracted in the time, frequency, and wavelet domains. Finally, a support vector machine, back propagation neural network, or random forest classifier are used to classify the pulse signals, two voting procedures are used and the diagnosis result can be achieved. The lowest recognition accuracy is 85.16%. The experimental results show that our 13-dimensional feature can be used as the main feature of pneumoconiosis diagnosis. The proposed method provides a more reliable auxiliary means for the diagnosis of coal mine pneumoconiosis.

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“…Furthermore, remote TCM pulse diagnosis has shown great promise with the development of communication and virtual reality technology. In remote TCM pulse diagnosis, it is necessary not only to collect the patient’s pulse information on the patient’s side but also to detect the doctor’s fingertip force on the doctor’s side in real time. , Therefore, whether for the digitalization of TCM pulse diagnosis or the provision of tools for remote TCM pulse diagnosis, it is imperative to measure the fingertip forces of the doctor during pulse diagnosis without interfering with his/her sense of patient’s pulse.…”

Section: Introductionmentioning

confidence: 99%

Wearable Photoelectric Fingertip Force Sensing System Based on Blood Volume Changes without Sensory Interference

Dong

Chu

Tian

et al. 2023

ACS Appl. Mater. Interfaces

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Monitoring the force of fingertip manipulation without disturbing the natural sense of touch is crucial for digitizing the skills of experienced craftsmen. However, conventional force sensors need to be put between the skin and the objects, which affects the natural sense of the skin. Here, we proposed a fingertip force sensing method based on changes of blood volume and designed a wearable photoelectric fingertip force sensing system (PFFS) for digitalization of traditional Chinese medicine (TCM) pulse diagnosis. The PFFS does not interfere with the fingertips' tactile sense while detecting fingertip force. This PFFS detects the change of blood volume in fingertip by photoelectric plethysmography and can obtain the change of output current under different fingertip forces. We also studied the effect of various factors on PFFS output signals, including emission lights of different wavelengths, ambient temperature, and the user's heartbeat artifact. We further established the relationship between the change of blood volume and fingertip force by combining experimental and theoretical methods. Moreover, we demonstrated the feasibility of the PFFS to detect fingertip forces under commonly used conditions in TCM pulse diagnosis without sensory interference. This PFFS also shows promise for perceiving the viscosity of objects and recognizing gestures in human−computer interaction. This work paves the way for the digitalization of fingertip forces during TCM pulse diagnosis and other fingertip forces under natural conditions.

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Resonance phenomenon during wrist pulse-taking: A stochastic simulation, model-based study of the ‘pressing with one finger’ technique

Cited by 15 publications

References 29 publications

Anatomy of the Cun Position at Wrist and Its Application in Pulse Diagnosis

Anatomy of the Cun Position at Wrist and Its Application in Pulse Diagnosis

Wrist Pulse Feature of Pneumoconiosis and its Application

Wearable Photoelectric Fingertip Force Sensing System Based on Blood Volume Changes without Sensory Interference

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