Vibration-Based Aortic Pulse Wave Timing Measurement
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Solution Overview
Problem
Traditional methods for measuring pulse wave conduction parameters, particularly in the aorta, are invasive and unsuitable for non-superficial arteries, lacking accuracy and comfort for the subject.
Innovation Solution
A non-invasive method using vibration sensors placed at predetermined positions to acquire information, determining feature points related to aortic valve opening and pulse arrival time to calculate Pulse Wave Transit Time (PWTT) and Velocity (PWV), enabling accurate elasticity assessment without direct contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional invasive methods are used to measure aortic pulse wave conduction parameters, then measurement precision may be improved, but the ease of operation and subject comfort deteriorate
Solution Approach 1:
The patent replaces traditional mechanical/invasive measurement systems with a non-invasive vibration-based detection system. Vibration sensors detect body vibrations caused by pulse wave conduction in the aorta, converting mechanical pulse wave information into detectable vibration signals without direct contact or insertion into the body, thereby maintaining measurement precision while dramatically improving ease of operation and subject comfort
Solution Approach 2:
The patent introduces body vibrations as an intermediary medium to transmit aortic pulse wave information to external sensors. The pulse wave conduction in the aorta causes characteristic body vibrations that serve as a mediator, allowing indirect measurement of aortic parameters through surface-level vibration detection rather than direct aortic measurement
2Measurement precision
If traditional methods are used for aorta measurement, then direct contact measurement may be achieved, but subject comfort and ease of operation worsen
Solution Approach 1:
The patent substitutes direct mechanical contact measurement with non-contact vibration detection. By detecting vibrations transmitted through the body from aortic pulse waves, the system eliminates the need for direct contact or insertion into the aorta, removing harmful factors while preserving measurement accuracy through indirect vibration analysis
3Ease of operation
If non-invasive vibration sensing is used, then ease of operation and subject comfort are improved, but measurement precision may deteriorate
Solution Approach 1:
The patent uses body vibrations as an intermediary that preserves aortic pulse wave information during transmission from the deep aorta to surface sensors. The vibration medium faithfully transmits the timing and characteristic information of pulse wave conduction, allowing accurate measurement of aortic parameters through non-invasive detection of these intermediary vibration signals
Solution Approach 2:
The system processes vibration signals to extract feature points corresponding to aortic valve opening and pulse wave arrival, using feedback algorithms to identify and measure the time difference. This feedback mechanism ensures accurate determination of pulse wave conduction time despite the indirect nature of vibration-based measurement
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method provides high measurement accuracy, comfort, and simplicity, suitable for hospital and home use, allowing continuous monitoring of aortic pulse wave conduction parameters.
Implementation Method 1
acquiring vibration information of a subject from one or more vibration sensors configured to be placed in predetermined positions
Data Source
AI summary
The present invention provides a pulse wave conduction parameter measuring method and a pulse wave conduction parameter processing device. The method comprises: acquiring vibration information of a subject from one or more vibration-sensitive sensors configured to be placed at a predetermined position; generating hemodynamic related information on the basis of the vibration information; determining a first feature point and a second feature point in the hemodynamic related information, wherein the first feature point is a point related to an aortic valve opening time of the subject, and the second feature point is related to a pulse wave arrival time of the subject; and determining a pulse wave conduction time of the subject on the basis of the first feature point and the second feature point.