Eddy Current Vascular Sensing for Precise Stenosis Positioning

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Solution Overview

Problem

Existing methods for detecting vascular embolism or sclerosis, such as ultrasound and electromagnetic coils, are cumbersome, difficult to position accurately, and not suitable for real-time, portable, or wearable monitoring, missing opportunities for early diagnosis and treatment.

Innovation Solution

A vascular state measurement method and device using eddy current induction measurements at two different ranges to derive signal characteristic differences, allowing for preliminary positioning of vascular embolism or sclerosis and determining an optimal detection section of the target vessel, utilizing a coil set and control module for portable and wearable detection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If ultrasound apparatus is used to track and monitor vascular status, then measurement precision is improved, but device complexity and ease of operation deteriorate

Engineering Contradiction:

Improvevascular status detection accuracyVSAvoidapparatus size and operational complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical ultrasound transducer system with an electromagnetic measurement system using coils and eddy current induction. This substitution maintains measurement capability while dramatically reducing device size and complexity, enabling portable and wearable implementations for continuous vascular monitoring.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent uses electromagnetic coils to create an alternative measurement approach that copies the functional capability of ultrasound detection. By measuring eddy current-induced signals from the coils, the system achieves vascular status detection without requiring complex ultrasound hardware or professional operation.

Inventive Principle:

Principle #26Copying

2Ease of operation

If electromagnetic coils are used for real-time detection, then ease of operation is improved, but measurement precision and positioning accuracy deteriorate

Engineering Contradiction:

Improvedetection simplicityVSAvoidvascular embolism or sclerosis positioning accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The patent divides the measurement process into two distinct stages: a first eddy current induction measurement to obtain initial signal characteristics, and a second eddy current induction measurement after adjusting terminal positions to obtain comparative data. This segmentation enables accurate positioning of vascular abnormalities while maintaining operational simplicity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent performs a first eddy current induction measurement as a preliminary step to establish baseline signal characteristics before conducting the second measurement. This preliminary action provides reference data that enhances the precision of subsequent positioning and detection operations.

Inventive Principle:

Principle #10Preliminary action

3Productivity

If single measurement range is used, then measurement speed is improved, but measurement precision deteriorates

Engineering Contradiction:

Improvedetection speedVSAvoidoptimal detection section identification accuracy

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

The patent implements a dynamic measurement approach where the terminal positions of the measurement range are adjusted between the first and second eddy current induction measurements. This dynamic adjustment of measurement parameters enables precise identification of optimal detection sections while maintaining efficient two-stage measurement process.

Inventive Principle:

Principle #15Dynamics

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

Enables real-time, portable, and wearable detection of vascular stenosis or sclerosis by reducing cost and size, improving detection accuracy and ease of use, and facilitating long-term monitoring without complex operations.

Implementation Method 1

performing a first eddy current induction measurement to a target vessel by a first measurement range to derive a first signal characteristic difference

Methodology Applied

Scientific EffectEddy current induction: Electromagnetic Induction

Data Source

PatentUS12605073B2Vascular state measurement method and measurement device thereof

Publication Date: 2026.04.21 NATIONAL TSING HUA UNIVERSITY

AI summary

The vascular state measurement method includes: performing a first eddy current induction measurement to a target vessel by a first measurement range to derive a first signal characteristic difference; adjusting at least one of a first terminal position and a second terminal position of the first measurement range to form a second measurement range; performing a second eddy current induction measurement to the target vessel by the second measurement range to derive a second signal characteristic difference; and performing at least one action according to the first signal characteristic difference and the second signal characteristic difference, wherein the at least one action is select from determining an optimal detection section of the target vessel and estimating at least one stenosis or sclerosis location of the target vessel.