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US 11,627,885 B2Granted
Blood pressure measurement device and blood pressure measurement method
AssigneeSharp Kabushiki Kaisha
InventorsRieko Ogawa, Yoshihisa Adachi, Yuki Edo, Ryota Tomizawa
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Abstract
There is provided a technique configured to measure blood pressure with high accuracy. A pulse wave is acquired from each of a plurality of regions on a body surface of a subject, at least two regions are selected from among the plurality of regions in accordance with signal quality of the acquired pulse wave of each region, and blood pressure information is calculated with reference to pulse wave propagation information indicating pulse wave propagation between the at least two regions selected.
Claims14
A blood pressure measurement device comprising:
- a pulse wave acquisition unit configured to acquire a pulse wave from each of a plurality of regions on a body surface of a single site of a subject;
- a region selection unit configured to select at least two regions from among the plurality of regions in accordance with signal quality of the pulse wave of each region acquired by the pulse wave acquisition unit;
- a blood pressure information acquisition unit configured to calculate blood pressure information with reference to pulse wave propagation information indicating pulse wave propagation between the at least two regions selected by the region selection unit;
- a measurement subject biometric parameter input unit configured to receive an input of biometric parameters of the subject;
- and
- a database configured to store, for each of the biometric parameters, a blood pressure estimation formula between the at least two regions selected by the region selection unit,
- wherein the blood pressure information acquisition unit selects, with reference to the biometric parameters input by the measurement subject biometric parameter input unit, one of the blood pressure estimation formulas to be used for calculating the blood pressure information, and calculates the blood pressure information using the selected blood pressure estimation formula.
4 more elements
A blood pressure measurement device comprising:
- a pulse wave acquisition unit configured to acquire a pulse wave from each of a plurality of regions on a body surface of a single site of a subject;
- a region selection unit configured to select at least two regions from among the plurality of regions in accordance with signal quality of the pulse wave of each region acquired by the pulse wave acquisition unit;
- a blood pressure information acquisition unit configured to calculate blood pressure information with reference to pulse wave propagation information indicating pulse wave propagation between the at least two regions selected by the region selection unit;
- and
- a reference blood pressure acquisition unit configured to acquire reference blood pressure of the subject,
- wherein the blood pressure information acquisition unit creates a blood pressure estimation formula corresponding to the subject, using the pulse wave propagation information and the reference blood pressure of the subject acquired by the reference blood pressure acquisition unit, and acquires the blood pressure information with reference to the created blood pressure estimation formula.
3 more elements
A blood pressure measurement device comprising:
- a pulse wave acquisition unit configured to acquire a pulse wave from each of a plurality of regions on a body surface of a single site of a subject;
- a region selection unit configured to select at least two regions from among the plurality of regions in accordance with signal quality of the pulse wave of each region acquired by the pulse wave acquisition unit;
- and
- a blood pressure information acquisition unit configured to calculate blood pressure information with reference to pulse wave propagation information indicating pulse wave propagation between the at least two regions selected by the region selection unit,
- wherein the pulse wave acquisition unit segments, for each of the plurality of specific areas previously set to the body surface of the subject, the specific area into the plurality of regions,
- the blood pressure information acquisition unit calculates the pulse wave propagation information regarding combinations of the regions between the specific areas, and
- there is further provided an estimation formula goodness-of-fit detecting section configured to detect goodness of fit of estimated blood pressure, which is estimated based on each of the pulse wave propagation information in the combinations of the regions between the specific areas, with respect to the measured blood pressure.
4 more elements
A blood pressure measurement method comprising:
- acquiring a pulse wave from each of a plurality of regions on a body surface of a single site of a subject;
- selecting at least two regions from among the plurality of regions in accordance with signal quality of the pulse wave of each region acquired by the acquiring of the pulse wave;
- acquiring blood pressure information in which the blood pressure information is calculated with reference to pulse wave propagation information indicating pulse wave propagation between the at least two regions selected by the selecting of the at least two regions;
- receiving an input of biometric parameters of the subject;
- and
- storing, for each of the biometric parameters, a blood pressure estimation formula between the selected at least two regions,
- wherein acquiring the blood pressure information includes selecting, with reference to the input biometric parameters, one of the blood pressure estimation formulas to be used for calculating the blood pressure information, and calculating the blood pressure information using the selected blood pressure estimation formula.
4 more elements
Dependencies are inferred from the claim text.