Carotid Blood Pressure Detection via Dual-Sensor Pulse Wave Analysis
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Solution Overview
Problem
Current methods for detecting carotid stenosis, such as DSA, MRA, and Doppler ultrasound, are time-consuming and unsuitable for fast screening, posing challenges in preventing strokes and dementia, especially for elderly patients at risk of cardiovascular disease.
Innovation Solution
A carotid blood pressure detection device using a pair of sensing units, such as Doppler radar or pressure sensors, positioned on the neck to measure pulse wave data and derive mean arterial pressure, with a controller and communication module for rapid assessment of carotid stenosis, reducing examination time and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods such as DSA, MRA, and Doppler ultrasound are used to detect carotid stenosis, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The patent replaces complex mechanical imaging systems (DSA, MRA, Doppler ultrasound) with a simplified pressure sensing system that uses pressure sensors to directly measure pressure differences across the carotid stenosis site, eliminating the need for time-consuming imaging procedures while maintaining diagnostic accuracy
Solution Approach 2:
The invention extracts only the essential measurement function (pressure differential detection) from the complex imaging systems, using dedicated pressure sensors positioned at specific locations to measure carotid pressure directly, thereby removing unnecessary procedural steps and reducing examination time
2Ease of operation
If Doppler ultrasound is used for carotid stenosis detection, then ease of operation is improved, but productivity deteriorates
Solution Approach 1:
The patent replaces the complex Doppler ultrasound mechanical scanning system with a simple pressure sensor-based measurement system that requires minimal operator skill and provides rapid results, thereby improving both ease of operation and screening productivity
3Measurement precision
If angiographic methods such as DSA and MRA are used, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The invention extracts only the essential pressure measurement function from complex angiographic systems, using simple pressure sensors and a straightforward pressure differential calculation method, thereby achieving accurate carotid stenosis assessment with minimal device complexity
Solution Approach 2:
The patent replaces complex magnetic resonance and angiographic imaging systems with a simple mechanical pressure sensing system that uses basic pressure sensors and electronic differential measurement, dramatically reducing device complexity while maintaining diagnostic accuracy
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 device enables rapid and accurate screening for carotid stenosis, reducing the time required for assessments compared to conventional methods and providing a non-invasive, user-friendly solution for elderly patients, effectively addressing the limitations of existing technologies.
Implementation Method 1
a first sensing unit (11) is configured to be disposed on a subject's neck and adjacent to a first position of the subject's carotid arteries; a second sensing unit (12) is configured to be disposed on the subject's neck and adjacent to a second position of the subject's carotid arteries
Data Source
AI summary
The present invention provides a carotid blood pressure detection device, comprising: a first sensing unit, a second sensing unit, and a controller connected or coupled to the first sensing unit and the second sensing unit. The first sensing unit is disposed on a subject's neck and adjacent to a first position of the subject's carotid arteries. The second sensing unit is disposed on the subject's neck and adjacent to a second position of the subject's carotid arteries. The controller derives a mean arterial pressure of a section of the subject's carotid arteries that lies between the first position and the second position of the subject's carotid arteries from pulse wave data measured and obtained by the first sensing unit and pulse wave data measured and obtained by the second sensing unit.