Fabrication and Characterization of a Wrist Wearable Cuffless Pulsimeter by Using the Hall Effect Device

Lee, Sang-Suk; Choi, Jong-Gu; Son, Il-Ho; Kim, Keun-Ho; Nam, Dong Hyun; Hong, Yi; Lee, Woo-Beom; Hwang, Dosam; Rhee, J.R.

doi:10.4283/jmag.2011.16.4.449

Cited by 9 publications

(8 citation statements)

References 9 publications

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“…Latex rubber surrounds the contact skin surface of the wrist. Contacted cylinder permanent magnet with skin of radial artery is able to move easily by vibration of pulse [1,3].…”

Section: Experimental Methodsmentioning

confidence: 99%

“…Magnetic sensor of Hall device is used A1395 type by Allegro Company that has highly sensitive and linear characteristic in strength of magnetic field. Within V CC input voltage has 10 mV/G sensitivity and let 0.1~3.2 V in the linear characteristic strength of magnetic field when apply to V CC /2 V of polarity [3,4].…”

Section: Experimental Methodsmentioning

confidence: 99%

“…The sensors currently developed are somewhat less accurate and inconvenient with the limitations of measuring time and space in case of outdoor activity. In particular, they cannot measure blood pressure and pulse without causing inconvenience to the patient, and have remarkably a low accuracy because of noise by body's movement [3].…”

Section: Introductionmentioning

confidence: 99%

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Pulse Wave Velocity Measured by Radial Artery Clip-type Pulsimeter Equipped with a Hall Device and Electrocardiogram

Lee¹,

Lee

2013

Journal of the Korean Magnetics Society

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The clip-type pulsimeter equipped with a magnetic sensing Hall device and the most popular body sign of the electrocardiogram (ECG) were investigated in order to analyze the pulse wave velocity (PWV). The PWV simultaneously calculated by means of time difference between the maximum peak of ECG pulse wave and the starting point of radial artery pulse wave, and distance difference between the heart position and the radial wrist position. The PWV analyzed from the clinical data was a wider scope of 5~7 m/s with an average value of 6 m/s. By the prediction of blood vessel's elasticity from the analysis of PWV, it may be useful for developing an oriental-western diagnostic medical signal device for a U-health-care system in the future.

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“…Latex rubber surrounds the contact skin surface of the wrist. Contacted cylinder permanent magnet with skin of radial artery is able to move easily by vibration of pulse [1,3].…”

Section: Experimental Methodsmentioning

confidence: 99%

Section: Experimental Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Pulse Wave Velocity Measured by Radial Artery Clip-type Pulsimeter Equipped with a Hall Device and Electrocardiogram

Lee¹,

Lee

2013

Journal of the Korean Magnetics Society

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“…The permanent magnet is placed at the center of the elastic rubber and fixed with an epoxy adhesive. The latex rubber, placed in the “Chawn” position, is evenly extended from the center of the cylindrical magnet above the radial artery, covering the skin surface of the wrist [3–5]. The distance between the Hall effect device and permanent magnet is approximately 2.5 mm.…”

Section: Acquisition Of the Pulse Wave Using The Clip-type Pulsimetermentioning

confidence: 99%

“…U-health-care is important, not only as a new growth industry for the next generation, but also as a primary means of reducing medical expenses, especially in those countries where medical expenses have been on a continuous and steep rise, owing to an increasing elderly population [1]. Thus, U-health-care development research of a wearable medical device for bio-signals to measure the pulse wave velocity (PWV) and the spatial pulse wave velocity (SPWV) is required [2,3]. Here the SPWV slower than the PWV is the different bio-signal measuring the compliance or the tension level of blood vessels in the circulatory system.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Spatial Pulse Wave Velocity by Using a Clip-Type Pulsimeter Equipped with a Hall Sensor and Photoplethysmography

Nam

Lee

Hong

et al. 2013

Sensors

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A prototype of a clip-type pulsimeter equipped with a magnetic field-sensing semiconductor Hall sensor was developed. It has a permanent magnet attached in the “Chwan” position to the center of a radial artery. The clip-type pulsimeter is composed of a hardware system measuring voltage signals. To measure spatial pulse wave velocity (SPWV), the signal from the radial artery pulsimeter and that from the photoplethysmography (PPG) were simultaneously compared. The pulse wave data from a clinical test of 39 clinical participants (male:female = 25:14) with a mean age of 24.36 (±2.35) years was analyzed. The mean SPWV, which was simultaneously measured from the radial artery pulsimeter and PPG, was 0.8 m/s. We suggest the SPWV results were higher for men than women, because of the better vascularity of terminal tissue in men. The findings of this research may be useful for developing a biomedical signal storage device for a U-health-care system.

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Development of pulse diagnostic devices in Korea

Kim

Park

2013

Integrative Medicine Research

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In Korean medicine, pulse diagnosis is one of the important methods for determining the health status of a patient. For over 40 years, electromechanical pulse diagnostic devices have been developed to objectify and quantify pulse diagnoses. In this paper, we review previous research and development for pulse diagnostic devices according to various fields of study: demand analysis and current phase, literature studies, sensors, actuators, systems, physical quantity studies, clinical studies, and the U-health system. We point out some confusing issues that have been naively accepted without strict verification: original pressure pulse waveform and derivative pressure pulse waveform, pressure signals and other signal types, and minutely controlled pressure exertion issues. We then consider some technical and clinical issues to achieve the development of a pulse diagnostic device that is appropriate both technically and in terms of Korean medicine. We hope to show the history of pulse diagnostic device research in Korea and propose a proper method to research and develop these devices.

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Fabrication and Characterization of a Wrist Wearable Cuffless Pulsimeter by Using the Hall Effect Device

Cited by 9 publications

References 9 publications

Pulse Wave Velocity Measured by Radial Artery Clip-type Pulsimeter Equipped with a Hall Device and Electrocardiogram

Pulse Wave Velocity Measured by Radial Artery Clip-type Pulsimeter Equipped with a Hall Device and Electrocardiogram

Measurement of Spatial Pulse Wave Velocity by Using a Clip-Type Pulsimeter Equipped with a Hall Sensor and Photoplethysmography

Development of pulse diagnostic devices in Korea

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