A new noninvasive assessment for measuring the instantaneous intra‐arterial blood pressure via tissue control method

This paper presents a noninvasive approach to measure the instantaneous intra‐arterial blood pressure based upon the Tissue Control Method. According to animal experiments, there exists a pressed location where the mean blood pressure in an artery is equivalent to the mean pressure measured on the skin, and forms a simple compliance circuit model. At this location, the compliance measured on the skin is simply the compliance of tissue, but the blood vessel is not involved. By using control means to decouple the pulsation of an artery from tissue, and then to identify the compliance of a blood vessel, the instantaneous intra‐arterial blood pressure can be estimated. The experimental results show that the errors of MBP, SBP and DBP are less than 2.5%, thereby validting the Tissue Control Method as a feasible technique to measure the intra‐arterial blood pressure.