BLOOD PRESSURE DETECTION APPARATUS AND BLOOD PRESSURE DETECTION METHOD
First Claim
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1. A blood pressure detection apparatus comprising:
- a press mechanism that applies pressure to a blood vessel by pressing a living body, and can gradually decrease the pressure;
a pressure sensor that detects a change in pressure of the blood vessel caused by a change in the pressure applied by the press mechanism; and
a blood pressure calculation section that determines the pressure applied by the press mechanism when a given waveform pattern appears in a waveform that indicates a change in pressure of the blood vessel to be a maximal blood pressure, determines the pressure applied by the press mechanism when the waveform has a maximum amplitude to be a mean blood pressure, and calculates a minimal blood pressure using the maximal blood pressure and the mean blood pressure.
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Abstract
A blood pressure detection apparatus includes a pressure sensor, a press mechanism that applies pressure to a blood vessel by pressing a living body, and can gradually decrease the pressure, and a blood pressure calculation section that determines the pressure when a given waveform pattern appears in a waveform of pulse waves obtained by the pressure sensor to be a maximal blood pressure, determines the pressure when the waveform has a maximum amplitude to be a mean blood pressure, and calculates a minimal blood pressure using the maximal blood pressure and the mean blood pressure.
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Citations
6 Claims
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1. A blood pressure detection apparatus comprising:
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a press mechanism that applies pressure to a blood vessel by pressing a living body, and can gradually decrease the pressure; a pressure sensor that detects a change in pressure of the blood vessel caused by a change in the pressure applied by the press mechanism; and a blood pressure calculation section that determines the pressure applied by the press mechanism when a given waveform pattern appears in a waveform that indicates a change in pressure of the blood vessel to be a maximal blood pressure, determines the pressure applied by the press mechanism when the waveform has a maximum amplitude to be a mean blood pressure, and calculates a minimal blood pressure using the maximal blood pressure and the mean blood pressure. - View Dependent Claims (2, 3, 4, 5)
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6. A blood pressure detection method comprising:
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applying pressure to a blood vessel by pressing a living body; gradually decreasing the pressure applied to the blood vessel; detecting a change in pressure of the blood vessel caused by a change in the pressure applied to the blood vessel; and determining the pressure applied to the blood vessel when a given waveform pattern appears in a waveform that indicates a change in pressure of the blood vessel to be a maximal blood pressure, determining the pressure applied to the blood vessel when the waveform has a maximum amplitude to be a mean blood pressure, and calculating a minimal blood pressure using the maximal blood pressure and the mean blood pressure.
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Specification