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Non-Invasive Blood Pressure Monitoring with Positionable Three-chamber Pneumatic Sensor

The main goal of the paper is to present a new type of a sensor for non-invasive continuous blood pressure measurements. The principle of such a sensor operation, based on local pressure compensation, is in the centre of discussion. The sensor presented has very small sensing pads (1 mm2 or less) which permits accurate sensor positioning directly on the elastic surfaces such as the human skin. Thanks to that it is possible to provide a high quality of the blood pressure measurement, when keeping the continuity of the measurement parameters and minimizing the level of disturbances. For this reason, the paper focuses on a detailed discussion of the positioning problem and the results of developing approaches to its solving. As a promising method, a positioning based on the pulse wave controlling by a three-chamber pneumatic sensor is proposed.