A Hemodynamic Pulse Wave Simulator Designed for Calibration of Local Pulse Wave Velocities Measurement for Cuffless...

Area of Science:

• Biomedical Engineering
• Cardiovascular Technology
• Medical Device Development

Background:

• Cuffless blood pressure (BP) monitors are increasingly common for early hypertension diagnosis.
• Existing cuffless BP devices require more reliable pulse wave simulation and verification methods.
• Accurate, non-invasive BP monitoring is crucial for managing cardiovascular health.

Purpose of the Study:

• To develop a novel pulse wave simulator for testing cuffless BP monitor (BPM) accuracy.
• To establish a verification method for cuffless BPMs using pulse wave velocity (PWV).
• To create a standard for assessing the performance of emerging cuffless BPM technology.

Main Methods:

• Designed an electromechanical simulator mimicking circulatory hemodynamics and an arterial phantom.
• Integrated an arm model with an embedded arterial phantom for realistic pulse wave generation.
• Utilized a cuffless device to measure PWV from the simulator and applied a hemodynamic model for calibration.

Main Results:

• The pulse wave simulator demonstrated improved cuffless BPM accuracy after calibration.
• Mean absolute error in PWV measurement decreased from 0.77 m/s to 0.06 m/s with calibration.
• Blood pressure measurement error reduced significantly, from 1.7-5.99 mmHg to 0.14-0.48 mmHg post-calibration.

Conclusions:

• A pulse wave simulator based on hemodynamic principles offers a reliable verification method for cuffless BPMs.
• The proposed simulator, coupled with multiple linear regression (MLR) modeling, provides quantitative performance assessment.
• This technology is suitable for mass production, establishing essential performance testing standards for widespread cuffless BPM devices.