1P1-N03 Development of a Carotid Pulse Pressure Sensor Using Electromagnetic Induction(Medical Robotics and Mechatronics (1))

Abstract

This paper proposes a novel non-invasive palpable sensor to measure carotid pulse pressure. The unit consists of a pair of coil printed circuit boards, a pair of springs, and a sensing plastic chip. The distance between the boards is monitored from the displacement of the springs, and the information is converted into a voltage signal based on electromagnetic induction. In this study, carotid pulse pressures of seven healthy males were measured using the proposed sensor and a commercial pulse pressure transducer. The results showed that the correlation coefficient between the two waveforms was 0.90 or more and the carotid pulse pressure was palpable throughout with the proposed sensor. Thus we conclude that the proposed sensor enables non-invasive measurement of carotid pulse waves.