Development of a Blood Pressure Measurement Instrument with Active Cuff Pressure Control Schemes
Journal
Journal of Healthcare Engineering
Journal Volume
2017
Date Issued
2017
Author(s)
Abstract
This paper presents an oscillometric blood pressure (BP) measurement approach based on the active control schemes of cuff pressure. Compared with conventional electronic BP instruments, the novelty of the proposed BP measurement approach is to utilize a variable volume chamber which actively and stably alters the cuff pressure during inflating or deflating cycles. The variable volume chamber is operated with a closed-loop pressure control scheme, and it is activated by controlling the piston position of a single-Acting cylinder driven by a screw motor. Therefore, the variable volume chamber could significantly eliminate the air turbulence disturbance during the air injection stage when compared to an air pump mechanism. Furthermore, the proposed active BP measurement approach is capable of measuring BP characteristics, including systolic blood pressure (SBP) and diastolic blood pressure (DBP), during the inflating cycle. Two modes of air injection measurement (AIM) and accurate dual-way measurement (ADM) were proposed. According to the healthy subject experiment results, AIM reduced 34.21% and ADM reduced 15.78% of the measurement time when compared to a commercial BP monitor. Furthermore, the ADM performed much consistently (i.e., less standard deviation) in the measurements when compared to a commercial BP monitor. ? 2017 Chung-Hsien Kuo et al.
Subjects
Pressure control
Active control schemes
Air turbulence
Diastolic blood pressures
Healthy subjects
Measurement time
Standard deviation
Systolic blood pressure(SBP)
Variable volume
Blood pressure
accurate dual way measurement
air injection measurement
Article
blood pressure measurement
blood pressure monitoring
comparative effectiveness
comparative study
diagnostic accuracy
diastolic blood pressure
feedback system
human
mean arterial pressure
oscillometry
signal noise ratio
signal processing
systolic blood pressure
adult
algorithm
blood pressure
devices
diastole
equipment design
normal human
procedures
reproducibility
sphygmomanometer
systole
Adult
Algorithms
Blood Pressure
Blood Pressure Determination
Diastole
Equipment Design
Healthy Volunteers
Humans
Oscillometry
Reproducibility of Results
Signal Processing, Computer-Assisted
Sphygmomanometers
Systole
SDGs
Type
journal article