Canadian researchers develop a touchless device for active detection of cardiovascular diseases


A new touchless device might provide results at a faster rate than the currently used traditional methods. The researchers at the University of Waterloo, Canada, have developed a novel, non-invasive, touch less and portable device, for improved diagnosis and prevention of various cardiovascular disease.

The device can monitor simultaneously the blood flow in the patients at multiple arterial points on the body without direct contact with the skin. It uses a technique called as Coded Hemodynamic Imaging to provide the results. The research study was published in the journal Scientific Reports.

To monitor cardiovascular activity, experts used photoplethysmography or PPG technology. In this, sensors are positioned on the skin and light is passed which helps in the detection of any fluctuations that occur in the local blood volume. However, the researchers of the current study worked with photoplethysmographic imaging, or PPGI, which doesn’t require skin contact as it is more sensitive to active or ambient light fluctuations.

Unlike traditional systems that take the reading based on a single blood-pulse at one spot of the body, this device can measure blood flow in various parts of the body by acting as numerous virtual sensors. The measurements from all the pulse points are relayed to a computer for continuous monitoring, said Robert Amelard, a systems design engineer at Waterloo.




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