BLOOD PRESSURE ESTIMATION APPARATUS AND METHOD
First Claim
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1. A blood pressure estimation apparatus comprising:
- a blood pressure measuring device which measures a blood pressure of a living body every first period;
a blood flow measuring device which measures a blood flow volume of the living body every second period which is shorter than the first periods; and
a blood pressure estimating device which estimates the blood pressure every third period which is shorter than the first periods, on the basis of the blood pressure which is measured by the blood pressure measuring device and the blood flow volume which is measured by the blood flow measuring device, whereinthe blood pressure estimating device estimates the blood pressure at a desired time point on the basis of the blood pressure at a reference time point which is measured by the blood pressure measuring device and a ratio or a change rate of the blood flow volume at the desired time point which is measured by the blood flow measuring device to the blood flow volume at the reference time point which is measured by the blood flow measuring device,the ratio or the change rate is weighted depending on a predetermined reflecting coefficient.
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Abstract
A blood pressure estimation apparatus (1) is provided with: a blood pressure measuring device (11) which measures a blood pressure (BPm) of a living body every first period; a blood flow measuring device (12) which measures a blood flow volume (BF) of the living body every second period which is shorter than the first period; and a blood pressure estimating device (13) which estimates the blood pressure (BPc) every third period which is shorter than the first period, on the basis of the blood pressure which is measured by the blood pressure measuring device and the blood flow volume which is measured by the blood flow measuring device.
10 Citations
14 Claims
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1. A blood pressure estimation apparatus comprising:
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a blood pressure measuring device which measures a blood pressure of a living body every first period; a blood flow measuring device which measures a blood flow volume of the living body every second period which is shorter than the first periods; and a blood pressure estimating device which estimates the blood pressure every third period which is shorter than the first periods, on the basis of the blood pressure which is measured by the blood pressure measuring device and the blood flow volume which is measured by the blood flow measuring device, wherein the blood pressure estimating device estimates the blood pressure at a desired time point on the basis of the blood pressure at a reference time point which is measured by the blood pressure measuring device and a ratio or a change rate of the blood flow volume at the desired time point which is measured by the blood flow measuring device to the blood flow volume at the reference time point which is measured by the blood flow measuring device, the ratio or the change rate is weighted depending on a predetermined reflecting coefficient. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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2-3. -3. (canceled)
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14. A blood pressure estimation method comprising:
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a blood pressure measuring process which measures a blood pressure of a living body every first period; a blood flow measuring process which measures a blood flow volume of the living body every second period which is shorter than the first period; and a blood pressure estimating process which estimates the blood pressure every third period which is shorter than the first period, on the basis of the blood pressure which is measured by the blood pressure measuring process and the blood flow volume which is measured by the blood flow measuring process, wherein the blood pressure estimating process estimates the blood pressure at a desired time point on the basis of the blood pressure at a reference time point which is measured by the blood pressure measuring process and a ratio or a change rate of the blood flow volume at the desired time point which is measured by the blood flow measuring process to the blood flow volume at the reference time point which is measured by the blood flow measuring process, the ratio or the change rate is weighted depending on a predetermined reflecting coefficient.
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Specification
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Current AssigneePioneer Corporation
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Original AssigneePioneer Corporation
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InventorsHashimoto, Shinya, Tateishi, Kiyoshi, Ishihara, Hiroyuki, Ito, Atsuya, Goma, Masaki
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Application NumberUS14/394,921Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current600/301CPC Class CodesA61B 5/021 Measuring pressure in heart...A61B 5/026 Measuring blood flow A61B3/...A61B 5/0261 using optical means, e.g. i...A61B 5/7221 Determining signal validity...A61B 5/7278 Artificial waveform generat...
