Development of a handy-type monitoring system for cardiovascular haemodynamic functions based on the volume-compensation and electrical admittance method.
- Author:
Yi-lin SONG
1
;
Shu-mei GAO
;
Akira IKARASHI
;
Ken-ichi YAMAKOSHI
Author Information
1. School of Mechtronic engineering, Heilongjiang University, Harbin. syl@hlju.edu.cn
- Publication Type:Journal Article
- MeSH:
Cardiovascular Diseases;
prevention & control;
Diagnostic Techniques, Cardiovascular;
instrumentation;
Equipment Design;
Hemodynamics;
Monitoring, Physiologic;
instrumentation;
methods
- From:
Chinese Journal of Medical Instrumentation
2009;33(3):167-171
- CountryChina
- Language:Chinese
-
Abstract:
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.
