Blood pressure detecting device, blood pressure detecting method, blood pressure detecting program, and strain sensor for blood pressure detection
First Claim
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1. A strain sensor for blood pressure detection, comprising:
- a pressure transducer including;
a metal thin plate for receiving a beat of a living body; and
a strain gauge provided on a surface of the metal thin plate, for detecting a pressure based on the beat propagating through the metal thin plate.
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Abstract
The present invention may detect a maximum blood pressure and a minimum blood pressure from a viewpoint different from that of a conventional blood pressure measuring method. The present invention propose a strain sensor for blood pressure detection, comprising: a pressure transducer including: a metal thin plate for receiving a beat of a living body; and a strain gauge provided on a surface of the metal thin plate, for detecting a pressure based on the beat propagating through the metal thin plate.
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Citations
15 Claims
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1. A strain sensor for blood pressure detection, comprising:
a pressure transducer including;
a metal thin plate for receiving a beat of a living body; and
a strain gauge provided on a surface of the metal thin plate, for detecting a pressure based on the beat propagating through the metal thin plate. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A blood pressure detecting device, comprising:
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pulse wave detecting means for detecting a pulse wave, including a strain sensor for blood pressure detection that is provided therein; and
compression means for compressing a blood vessel of a living body and gradually reducing a compression pressure to the blood vessel. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A blood pressure detecting method of detecting a maximum blood pressure and a minimum blood pressure based on a pulse wave propagating through an artery, comprising:
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using a strain sensor for blood pressure detection;
determining, as the maximum blood pressure, a pressure at a time when a first notch is caused in pulse waveforms obtained while an occluded artery is gradually opened; and
determining, as the minimum blood pressure, a pressure at a time when the first notch is lost. - View Dependent Claims (14)
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15. A blood pressure detecting program for obtaining a maximum blood pressure and a minimum blood pressure based on a pulse wave propagating through an artery, which is executed by a computer, comprising:
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a process for calculating, for each unit time, a change in pulse wave that is converted into an electrical signal by a strain sensor for blood pressure detection using a predetermined calculation expression; and
a process for determining a time when a notch is caused in a waveform of the pulse wave and a time when the notch is lost based on the calculated change in pulse wave.
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Specification