title: Magnetic sensor for arterial distension and blood pressure monitoring.
abstract: A novel sensor for measuring arterial distension, pulse and pressure waveform is developed and evaluated. The system consists of a magnetic sensor which is applied and fixed to arterial vessels without any blood vessel constriction, hence avoiding stenosis. The measurement principle could be validated by in vitro experiments on silicone tubes, and by in vivo experiments in an animal model, thereby indicating the non-linear viscoelastic characteristics of real blood vessels. The sensor is capable to provide absolute measurements of the dynamically varying arterial diameter. By calibrating the sensor, a long-term monitoring system for continuously measuring blood pressure and other cardiovascular parameters could be developed based on the method described. This will improve diagnostics for high risk patients and enable a better, specific treatment.
authors.affiliation: Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 102, 79110, Freiburg, Germany, Johannes.Ruhhammer@imtek.de.
authors.forename: Johannes
authors.initials: J
authors.lastname: Ruhhammer
authors.forename: Tamara
authors.initials: T
authors.lastname: Herbstritt
authors.forename: Dominic
authors.initials: D
authors.lastname: Ruh
authors.forename: Katharina
authors.initials: K
authors.lastname: Foerster
authors.forename: Claudia
authors.initials: C
authors.lastname: Heilmann
authors.forename: Friedhelm
authors.initials: F
authors.lastname: Beyersdorf
authors.forename: Frank
authors.initials: F
authors.lastname: Goldschmidtboeing
authors.forename: Andreas
authors.initials: A
authors.lastname: Seifert
authors.forename: Peter
authors.initials: P
authors.lastname: Woias
mesh_terms: D000818:Animals; D015924:Blood Pressure Monitors; D004548:Elasticity; D005263:Femoral Artery / Q000503:physiopathology*; D006801:Humans; D008280:Magnetics; D008955:Models, Cardiovascular; D012756:Sheep