[Development of a handy-type monitoring system for cardiovascular haemodynamic functions based on the volume-compensation and electrical admittance method].
A handy-type monitoring system for cardiovascular haemodynamic functions based on the volume-compensation and electrical admittance method is developed. In this system, the inconvenient and discomfort due to cuff occlusion of the biological segment for BP measurement is improved by developing a new device using a local pressurization method, the stability for the physiological information detection is improved by developing a new detecting system, and the noise during detection using the system is greatly reduced by using a newly developed nozzle-flapper type electro-pneumatic converter. Also, for electrical admittance cardiography to estimate CO, the applicability of a two-compartment coaxial cylindrical model and the optimal position of a spot-electrode array that is used to replace the conventional band-electrode are discussed in this research. Experimental result shows that the monitoring system should satisfy non-invasive BP and CO measurement on beat by beat, and the comfort of measurement is significantly improved.
Song
Yi-lin
YL
School of Mechtronic engineering, Heilongjiang University, Harbin. syl@hlju.edu.cn
Gao
Shu-mei
SM
Ikarashi
Akira
A
Yamakoshi
Ken-ichi
K
D002318:Cardiovascular Diseases / Q000517:prevention & control; D003935:Diagnostic Techniques, Cardiovascular / Q000295:instrumentation*; D004867:Equipment Design; D006439:Hemodynamics; D008991:Monitoring, Physiologic / Q000295:instrumentation* / Q000379:methods