Pressure-pulse-wave detecting apparatus
AssigneeColin Corporation
InventorToshihiko Ogura
Life of this patent
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Abstract
An apparatus for detecting a pressure pulse wave produced by an artery of a living subject, including a pressure-pulse-wave sensor which is adapted to be pressed against the artery of the subject via a skin of the subject, detects the pressure pulse wave produced by the artery, and generates a pressure-pulse-wave signal representing the detected pressure pulse wave, a band-pass filter which extracts, from the pressure-pulse-wave signal, a blood-flow-noise signal having frequencies in a prescribed blood-flow-noise frequency range, and an output device which outputs the blood-flow-noise signal extracted by the band-pass filter.
Claims10
An apparatus for detecting a pressure pulse wave produced by an artery of a living subject, comprising:
- a pressure-pulse-wave sensor which is adapted to be pressed against the artery of the subject via a skin of the subject, detects the pressure pulse wave produced by the artery, and generates a pressure-pulse-wave signal representing the detected pressure pulse wave;
- a band-pass filter which extracts, from the pressure-pulse-wave signal, a blood-flow-noise signal having frequencies in a prescribed blood-flow-noise frequency range;
- and
- an output device which outputs the blood-flow-noise signal extracted by the band-pass filter.
An apparatus for detecting a pressure pulse wave produced by an artery of a living subject, comprising:
- a pressure-pulse-wave sensor which is adapted to be pressed against the artery of the subject via a skin of the subject, detects the pressure pulse wave produced by the artery, and generates a pressure-pulse-wave signal representing the detected pressure pulse wave;
- a band-pass filter which extracts, from the pressure-pulse-wave signal, a blood-flow-noise signal having frequencies in a prescribed blood-flow-noise frequency range;
- a blood-flow-noise-information obtaining means for obtaining blood-flow-noise information representing a magnitude of the blood-flow-noise signal extracted by the band-pass filter;
- and
- an output device which outputs the blood-flow-noise information obtained by the blood-flow-noise-information obtaining means.
An apparatus for detecting a pressure pulse wave produced by an artery of a living subject, comprising:
- a pressure-pulse-wave sensor which is adapted to be pressed against the artery of the subject via a skin of the subject, detects the pressure pulse wave produced by the artery, and generates a pressure-pulse-wave signal representing the detected pressure pulse wave;
- a band-pass filter which extracts, from the pressure-pulse-wave signal, a blood-flow-noise signal having frequencies in a prescribed blood-flow-noise frequency range;
- a stenosis judging means for making, based on a magnitude of the blood-flow-noise signal extracted by the band-pass filter, a judgment about whether a portion of the artery that is pressed by the pressure-pulse-wave sensor suffers stenosis;
- and
- an output device which outputs the judgment made by the stenosis judging means.
Dependencies are inferred from the claim text.