New Method for Computing Optical Hemodynamic Blood Pressure

Objective: Hypertension is a major risk indicator for coronary heart diseases, renal failure, stroke and other various illnesses, and it is the primary global risk for mortality. Blood pressure measurements are essential for managing the risks resulting from hypertension. In this paper we will present a new device, the TensorTip MTX, which computes hemodynamic blood pressure noninvasively. Methods: This paper presents a technique that uses the color imaging resulting from a set of monochrome light source that traverse the tissue under consideration and is projected onto the color image sensor. A new extended solution of the Windkessel model is being displayed and provides additional insight on various functional resistances rather than a constant resistance. Results: The TensorTip MTX was clinically evaluated in two medical centers and was found to perform well at standard blood pressure measurements also monitoring patients who suffered from alterations of blood pressure due to cardiac surgery. The device passed successfully our clinical trials and fulfilled the ISO 81060-2 recognized accuracy requirements for various notified bodies. Conclusions: In this work it was found that the variation in the pressure flow can be determined from the changes in the height of the temporal color histograms and additional temporal volume information. Significance: Today, the most common technique is the oscillometric technique based on the sphygmomanometer arm cuff pressure. This paper presents a new device, the TensorTip MTX, which computes hemodynamic blood pressure noninvasively, cuff less and free of air pumping.