Modeling of a Ring for Blood Pressure Measurement in COMSOL Multiphysics® for Medical Applications


Modeling of a Ring for Blood Pressure Measurement in COMSOL Multiphysics® for Medical Applications
Published in:	Engineering Innovations for Global Sustainability: Proceedings of the 14th Latin American and Caribbean Conference for Engineering and Technology
Date of Conference:	July 20-22, 2016
Location of Conference:	San Jose, Costa Rica
Authors:	José Miguel Barboza Retana Gabriela Ortiz León Marta Vílchez Monge
Refereed Paper:	#113

Abstract: This paper explains the use of a model to design an implanted blood pressure monitoring system through simulations in COMSOL Multiphysics® by using FSI Module. These measurement systems need to have a minimal blood contact to reduce the thrombus formation, bleeding, and avoid vessel occlusion, which are associated with the conventional catheter-tip-based technique. The model employs an elastic sensing cuff, wrapped around the artery section, made of silicone filled with bio-compatible fluid with an immersed MEMS pressure sensor. From this mechanical interaction, the measured waveform represents a down-scaled version of the blood pressure waveform, where the simulation scale factor was 0.2859. From the analytical study, the scale factor was 0.2921, which results in an error of 2.1%. With this factor it is possible to adjust the measurement system for different medical applications.