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Ultrasonic blood pressure measurement apparatus and blood pressure measurement method

An ultrasonic and sphygmomanometer technology is applied in the field of ultrasonic sphygmomanometer devices, which can solve the problems of inability to measure the diameter of blood vessels, inability to measure the diameter, and weak reception intensity of reflected waves of ultrasonic waves.

Inactive Publication Date: 2016-03-09
SEIKO EPSON CORP
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Problems solved by technology

However, since the position of the blood vessel changes with the subject's body movements such as muscle contraction and joint movement, the measurement accuracy of the blood vessel diameter may decrease.
For example, due to changes in the relative positional relationship between the blood vessel and the ultrasonic probe, the ultrasonic signal used to measure the diameter of the blood vessel does not pass through the center of the blood vessel and the diameter cannot be measured, or the received intensity of the reflected wave of the ultrasonic wave becomes weak and the measurement cannot be performed In the case of blood vessel diameter

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  • Ultrasonic blood pressure measurement apparatus and blood pressure measurement method
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  • Ultrasonic blood pressure measurement apparatus and blood pressure measurement method

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[0033] [overall composition]

[0034] figure 1 It is a diagram for explaining the outline of the ultrasonic blood pressure measurement device 10 to which the present invention is applied. The ultrasonic blood pressure measurement device 10 is a device for non-invasively measuring a subject's blood pressure using ultrasonic waves, and includes a main body device 20, an ultrasonic probe 30 for ultrasonic measurement, and two electrocardiographic electrodes 40 for electrocardiographic measurement. .

[0035] The ultrasonic probe 30 has an ultrasonic vibrator that transmits and receives an ultrasonic pulse signal or a burst signal of, for example, several MHz to several tens of MHz. The ultrasonic probe 30 is attached to the left neck of the subject 2 such that the ultrasonic vibrator is positioned directly above the carotid artery of the subject 2 , for example. In addition, the term "directly above" mentioned here is a term used in an expression in the form of an operation ma...

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Abstract

The invention relates to an ultrasonic blood pressure measurement apparatus and a blood pressure measurement method. In the ultrasonic blood pressure measurement apparatus (10) that measures a blood pressure by transmitting an ultrasonic wave toward a blood vessel and receiving a reflected wave, a storage unit (300) stores a [beta] blood-pressure calculation expression that is a first relationship between a vascular diameter (D) of the blood vessel and a blood pressure (P); a pulse wave velocity calculation unit (208) measures a pulse wave velocity (PWV) of the blood vessel; a [beta] blood-pressure calculation expression modifying unit (214) calculates a modified [beta] blood-pressure calculation expression that is a third relationship obtained by modifying the [beta] blood-pressure calculation expression using the pulse wave velocity (PWV); a vascular diameter measurement unit (206) configured to measure the vascular diameter (D) of the blood vessel using the ultrasonic wave; and a temporary blood pressure calculation unit (220) determines the blood pressure (P) according to the modified [beta] blood-pressure calculation expression.

Description

[0001] Cross References to Related Applications [0002] This application is based on and claims the benefit of priority from Japanese Patent Application No. 2014-171267 filed on August 26, 2014, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to an ultrasonic blood pressure measuring device and the like which measure blood pressure using ultrasonic waves. Background technique [0004] As a method of non-invasively measuring a subject's blood pressure, there is known a technique of measuring the blood vessel diameter of a subject's blood vessel using ultrasound and estimating the blood pressure from the blood vessel diameter. For example, Patent Document 1 discloses a method in which the relationship between blood vessel diameter and blood pressure is grasped as a nonlinear function, and blood pressure is calculated from a stiffness parameter β representing the hardness of the blood vessel and the bloo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/00A61B8/04
CPCA61B8/0891A61B8/5207A61B8/04A61B8/02
Inventor 水上博光
Owner SEIKO EPSON CORP
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