Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
A Magnetic Transducer System for Non-invasive Detection of Blood Flow Pulse and Evaluation of Arterial Compliance
Categories for this Invention
Category – Medical Devices
Applications – Cardiovascular Health Monitoring, Pulse Contour Analysis, Arterial Occlusion Testing
Industry – Medical Devices, Biotechnology
Market- Global cardiac output monitoring devices market is expected to have grown from USD 1498 million in 2022 to USD 2215 million with a CAGR of 5%.
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Problem Statement
- The influence of the magnetic bias field on the shape and amplitude of the signal is very prominent in the Modulated Magnetic Signature of Blood (MMSB) principle.
- Further, peak to peak value of the output signal need not be the only criterion for deciding upon the magnetic bias field. Keeping the sensor and the bias magnet as separate entities is not recommended as significant alterations in signal shape were observed due to even slight relative motion between the two.
- This led inventors to design a transducer using a single element GMR sensor and a permanent magnet mounted together, for more stable measurements.
Technology
The present invention is a magnetic transducer system to a non-invasive detection of blood flow pulse and evaluation of arterial compliance.
- Development of a portable magnetic transducer system for non-invasive blood flow monitoring, utilizing a permanent magnet and Giant Magneto Resistance (GMR) sensor, ensuring repeatability in measurements through consistent relative geometry of magnetic field sources and sensors.
- Functional prototype successfully demonstrated the ability to detect blood pulse waveforms in human volunteers, yielding highly similar waveforms across multiple measurements, indicating potential for widespread application in pulse contour analysis and arterial compliance evaluation.
- Quantitative comparison with standard bio-waveforms such as Doppler flow velocity and arterial distension waveforms showed strong correlation, highlighting the transducer’s capability to detect arterial blood fluctuations and its potential for applications like pulse wave velocity measurements.
Key Features / Value Proposition
Enhanced Portability:
Compact and portable design enables non-invasive blood flow monitoring in various clinical and ambulatory settings.
Reliable Repeatability:
Consistent measurement methodology ensures repeatable results for accurate evaluation of arterial compliance and pulse wave analysis.
Versatile Compatibility:
Compatible with ultrasound transducers for comprehensive vascular assessment, enhancing its utility across diverse medical applications.
Precise Detection:
Utilizes advanced magnetic transducer technology for precise detection of blood pulse waveforms, offering insights into arterial health and function.
Correlative Accuracy:
Strong correlation with standard bio-waveforms validates accuracy and reliability in detecting arterial blood fluctuations and pulse characteristics.
Clinical Utility:
Facilitates quantitative assessment of pulse wave velocity and arterial occlusion tests, empowering clinicians with valuable diagnostic information for informed decision-making.
Questions about this Technology?
Contact For Licensing
sm-marketing@imail.iitm.ac.in
ipoffice2@iitm.ac.in
Research Lab
Prof. V. Jayashankar
Prof. Jayaraj Joseph
Department of Electrical Engineering
Intellectual Property
- IITM IDF Ref. 824
- IN 381839 – Patent Granted
Technology Readiness Level
TRL – 3
Proof of concept stage.