Non-Invasive Monitoring of Blood Pressure Based on the Data of Continuous Registration of the Pulse Wave Signal with a New Type of Three-Channel Sensor
The paper discusses the scheme of operation, design features and test results of a new type of sensor for continuous non-invasive measurement of blood pressure. The positioning of the sensor on the patient’s body is based on the method of differential processing of data coming from three channels that synchronously register the pulse wave signal. The miniature dimensions of the sensor measuring element and the possibility of its precise positioning directly in the measurement zone on small and very small (1 mm or less) areas of elastic surfaces, such as skin and adjacent tissues of the human body, allow for increased quality of pulse wave shape restoration, continuity of measurement parameters and minimizing the level of external disturbances. Examples of measurement for some superficial arteries of the human body are given. In the case of the radial and temporal arteries, the possibility of continuous measurement of the actual value of blood pressure was also confirmed. The results of using an upgraded version of the sensor with the possibility of synchronous ECG measurement are described.