Respiration rate measuring apparatus

Details Respiration rate measuring apparatus Respiration rate measuring apparatus

1995-04-19

1997-11-04

Nasser, Robert

Surgery

Truss

Pad

128687, 128721, 128677, 128671, A61B 500

Patent

active

056828985

ABSTRACT:
An apparatus is provided for measuring a respiration rate of a living subject, including a pulse rate measuring device which iteratively determines a pulse rate of the subject based on a pulse wave continuously produced from a peripheral portion of the subject; a systolic blood pressure measuring device which iteratively determines a systolic blood pressure of the subject based on a magnitude of a pressure pulse wave continuously produced from an arterial vessel of an extremity of the subject; a calculating device for iteratively calculating a product of two or more factors which include one of the iteratively determined pulse rates and one of the iteratively determined systolic blood pressures; and a respiration rate determining device for determining a respiration rate of the subject based on a period of a cyclic change of the iteratively calculated products. An apparatus is also provided for measuring a respiration rate of a living subject, including a pulse wave detecting device which detects a pulse wave continuously produced from the subject; a waveform evaluating device for iteratively providing an evaluated value of a waveform of the detected pulse wave; and a respiration rate determining device for determining a respiration rate of the subject based on a period of a cyclic change of the evaluated values iteratively provided by the waveform evaluating device.

REFERENCES:
patent: 5022402 (1991-06-01), Schieberl et al.
patent: 5119822 (1992-06-01), Niwa
patent: 5143078 (1992-09-01), Mather et al.
patent: 5179956 (1993-01-01), Harada et al.
patent: 5385144 (1995-01-01), Yamanishi et al.
patent: 5396893 (1995-03-01), Oberg et al.

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