title: A blood pressure monitor with robust noise reduction system under linear cuff inflation and deflation.
abstract: We have developed the non-invasive blood pressure monitor which can measure the blood pressure quickly and robustly. This monitor combines two measurement mode: the linear inflation and the linear deflation. On the inflation mode, we realized a faster measurement with rapid inflation rate. On the deflation mode, we realized a robust noise reduction. When there is neither noise nor arrhythmia, the inflation mode incorporated on this monitor provides precise, quick and comfortable measurement. Once the inflation mode fails to calculate appropriate blood pressure due to body movement or arrhythmia, then the monitor switches automatically to the deflation mode and measure blood pressure by using digital signal processing as wavelet analysis, filter bank, filter combined with FFT and Inverse FFT. The inflation mode succeeded 2440 measurements out of 3099 measurements (79%) in an operating room and a rehabilitation room. The new designed blood pressure monitor provides the fastest measurement for patient with normal circulation and robust measurement for patients with body movement or severe arrhythmia. Also this fast measurement method provides comfortableness for patients.
authors.affiliation: Nihon Kohden Corporation, 1-31-4 Nishi-Ochiai, Shinjuku-ku, Tokyo, Japan. Takashi_Usuda@mbl.nck.co.jp
authors.forename: Takashi
authors.initials: T
authors.lastname: Usuda
authors.forename: Naoki
authors.initials: N
authors.lastname: Kobayashi
authors.forename: Sunao
authors.initials: S
authors.lastname: Takeda
authors.forename: Yoshifumi
authors.initials: Y
authors.lastname: Kotake
mesh_terms: D000465:Algorithms; D016477:Artifacts; D001795:Blood Pressure Determination / Q000295:instrumentation*; D003198:Computer Simulation; D003936:Diagnosis, Computer-Assisted / Q000295:instrumentation* / Q000379:methods*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D016014:Linear Models; D008955:Models, Cardiovascular; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D019722:Sphygmomanometers