Title:
誘発された摂動を測定して生理学的パラメータを測定するための装置および方法
Document Type and Number:
Japanese Patent JP3703496
Kind Code:
B2
Abstract:
A monitor for determining a patient's physiological parameter includes a calibration device configured to provide a calibration signal representative of the patient's physiological parameter. An exciter is positioned over a blood vessel of the patient for inducing a transmitted exciter waveform into the patient. A noninvasive sensor is positioned over the blood vessel, where the noninvasive sensor is configured to sense a hemoparameter and to generate a noninvasive sensor signal representative of the hemoparameter containing a component of a physiological parameter waveform and a component of a received exciter waveform. In this context, a hemoparameter is defined as any physiological parameter related to vessel blood such as pressure, flow, volume, velocity, blood vessel wall motion, blood vessel wall position and other related parameters. A processor is configured to determine a relationship between a property of the received exciter waveform and a property of the physiological parameter. The processor is connected to receive the calibration signal and the noninvasive sensor signal, and the processor is configured to process the calibration signal and the noninvasive sensor signal to determine the physiological parameter. In the preferred embodiment, the physiological parameter measured is blood pressure, however, the present invention can also be used to analyze and track other physiological parameters such as vascular wall compliance, strength of ventricular contractions, vascular resistance, fluid volume, cardiac output, myocardial contractility and other related parameters.
Inventors:
Caro Richard G.
Sher Mark H.
Flaherty Brian Pee.
Sher Mark H.
Flaherty Brian Pee.
Application Number:
JP51439897A
Publication Date:
October 05, 2005
Filing Date:
October 02, 1996
Export Citation:
Assignee:
Masimo Corporation
International Classes:
A61B5/022; (IPC1-7): A61B5/022
Domestic Patent References:
| JP62270133A |
Foreign References:
| US3095872 | ||||
| WO1986000351A1 | ||||
| WO1990000029A1 | ||||
| WO1995028126A1 |
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Katsuichi Nishimoto
Kato Kazunori
Katsuichi Nishimoto