Respiration rate measuring apparatus
First Claim
1. An apparatus for measuring a respiration rate of a living subject, comprising:
- a pulse rate measuring device which iteratively determines a pulse rate of said subject based on a first pulse wave continuously produced from a peripheral portion of the subject in synchronism with heartbeat of the subject;
a systolic blood pressure measuring device which iteratively determines a systolic blood pressure of said subject based on a magnitude of a second pressure pulse wave continuously produced from an arterial vessel of an extremity of the subject in synchronism with said heartbeat of the subject;
calculating means for iteratively calculating a product of at least two factors which include one of the pulse rates iteratively determined by said pulse rate measuring device and one of the systolic blood pressures iteratively determined by said systolic blood pressure measuring device; and
respiration rate determining means for determining said respiration rate of said subject based on a period of a cyclic change of the products iteratively calculated by said calculating means.
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Accused Products
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.
91 Citations
11 Claims
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1. An apparatus for measuring a respiration rate of a living subject, comprising:
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a pulse rate measuring device which iteratively determines a pulse rate of said subject based on a first pulse wave continuously produced from a peripheral portion of the subject in synchronism with heartbeat of the subject; a systolic blood pressure measuring device which iteratively determines a systolic blood pressure of said subject based on a magnitude of a second pressure pulse wave continuously produced from an arterial vessel of an extremity of the subject in synchronism with said heartbeat of the subject; calculating means for iteratively calculating a product of at least two factors which include one of the pulse rates iteratively determined by said pulse rate measuring device and one of the systolic blood pressures iteratively determined by said systolic blood pressure measuring device; and respiration rate determining means for determining said respiration rate of said subject based on a period of a cyclic change of the products iteratively calculated by said calculating means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification