Electromagnetic Stent Flow Sensor for Thrombosis Detection
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Solution Overview
Problem
Late stent thrombosis, characterized by blood clot occlusion in stents, poses a significant challenge in detecting reduced blood flow due to restenosis or thrombosis, requiring urgent revascularization and lacks effective noninvasive monitoring solutions.
Innovation Solution
An electromagnetic flow sensor integrated with stent structures, utilizing Faraday's law of induction, measures blood flow by generating a magnetic field perpendicular to the flow direction and detecting the induced potential difference across electrodes, enabling noninvasive detection of reduced blood flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If drug-eluting stents are used to reduce restenosis risk, then restenosis risk is reduced from 20% to less than 5%, but late stent thrombosis cannot be detected and requires urgent revascularization
Solution Approach 1:
The patent combines a drug-eluting stent structure with an electromagnetic flow sensor system into a single integrated device. The stent provides restenosis prevention while the integrated flow sensor enables real-time blood flow monitoring, allowing detection of late stent thrombosis without requiring separate monitoring procedures or urgent revascularization.
Solution Approach 2:
The electromagnetic flow sensor provides continuous feedback on blood flow conditions through the stent. This feedback mechanism enables early detection of flow reduction indicating thrombosis or restenosis, allowing timely intervention before complete occlusion occurs, thereby eliminating the information loss about blood flow status.
2Ease of operation
If traditional stent monitoring is used, then urgent revascularization is required for late stent thrombosis, but noninvasive real-time monitoring is unavailable
Solution Approach 1:
The stent system performs self-monitoring of blood flow through the integrated electromagnetic sensor. The device automatically detects flow changes and provides real-time data without requiring external monitoring equipment or invasive procedures, enabling patients to be monitored continuously and comfortably while providing immediate detection of thrombosis events.
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 electromagnetic flow sensor effectively monitors blood flow through stents, allowing for early detection of restenosis or thrombosis, reducing the risk of urgent revascularization needs and improving patient outcomes by providing real-time flow rate data.
Implementation Method 1
a magnetic apparatus mechanically coupled to the support structure, the magnetic apparatus configured to generate a magnetic field through the passage, the field including a component perpendicular to a direction of flow of the biological fluid
Implementation Method 2
electrodes mechanically coupled to the support structure, the electrodes connected to output a potential difference generated by the flow of the biological fluid through the magnetic field indicative of a velocity of flow of the biological fluid through the passage
Implementation Method 3
Such a flow sensor can use Faraday's law of induction to measure blood flow
Data Source
AI summary
A stent system can be used to measure a flow characteristic of a fluid, such as a biomagnetic fluid, flowing through a passage of a support structure forming a portion of the stent system. The stent system can include a magnetic apparatus mechanically coupled to the support structure, the magnetic apparatus configured to generate a magnetic field through the passage, the field including a component perpendicular to a direction of flow of the biological fluid. The stent system can include electrodes mechanically coupled to the support structure, where the electrodes are connected to output a potential difference generated by the flow of the biological fluid through the magnetic field indicative of a velocity of flow of the biological fluid through the passage.