Conceptual design of a multi-functional sphygmus detection system

Area of Science:

• Biomedical Engineering
• Medical Devices
• Physiology

Background:

• Simultaneous measurement of blood pressure and flow rate in the radial artery is crucial for accurate sphygmic diagnosis.
• Existing methods may be invasive or lack multi-functionality.
• Noninvasive techniques are needed for improved patient care and diagnostic capabilities.

Purpose of the Study:

• To conceptually design a noninvasive, multi-functional sphygmus detection system.
• To enable simultaneous measurement of blood pressure and radial artery flow rate.
• To advance noninvasive diagnostic tools in cardiovascular medicine.

Main Methods:

• Utilizing Y. C. Fung's flow rate equation, which considers vessel diameter, pressure, compliance, distance, and viscosity.
• Employing thermal array sensors and thermal image identification for artery localization and diameter estimation.
• Implementing pressure feedback control to determine arterial compliance and calculating flow rate using a nonlinear equation.

Main Results:

• The proposed system integrates multiple techniques for comprehensive hemodynamic assessment.
• Accurate estimation of radial artery diameter and dynamic arterial compliance is achieved.
• The system enables calculation of blood flow rate from noninvasively acquired data.

Conclusions:

• The conceptual design offers a novel approach to noninvasive sphygmic diagnosis.
• This multi-functional system has the potential to improve the accuracy and efficiency of cardiovascular assessments.
• Further development could lead to a valuable tool for clinical practice.