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Blood pressure measurement device

A device and blood pressure technology, applied in the directions of diagnostic recording/measurement, blood vessel evaluation, pressure sensor, etc., can solve the problem of unreliable results, and achieve the effect of reliable measurement results and large dynamic range

Inactive Publication Date: 2016-05-11
NOKIA TECHNOLOGLES OY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the results of these continuous measurement systems are often very unreliable due to, for example, the motion of the patient to be measured or due to changing environmental factors such as changing measurement altitude or pressure

Method used

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Embodiment Construction

[0020] Figure 1A-Figure 1C The principle of an exemplary device 100 for continuously and non-invasively measuring blood pressure of a patient is illustrated according to an advantageous embodiment of the present invention, wherein the device comprises a first pressure sensor (P1) configured to measure A pressure signal proportional to the patient's arterial blood pressure at the first location, the device also includes a third ambient pressure sensor (P3) configured to measure ambient pressure. In addition, the device is configured to subtract the signal originating from the third ambient pressure sensor from the signal originating from the first pressure sensor to compensate for changes caused by changes in the height of the measurement point and changes in atmospheric pressure to provide a pressure representative of the patient. Signal relative to systemic arterial blood pressure. It is to be understood that the subtraction and other signal processing may be performed in th...

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Abstract

A method for measuring blood pressure of a patient continuously and non-invasively comprises measuring a first pressure signal being proportional to arterial blood pressure of the patient at a first location by a first pressure sensor (P1). In addition ambient pressure is measured by a third ambient pressure sensor (P3). Furthermore the method comprises subtracting the signal derived from the third ambient pressure sensor from the signal derived from the first pressure sensor to compensate for alterations induced by alterations in measurement point altitude and atmospheric pressure changes thereby providing a signal representing relative systemic arterial blood pressure of the patient

Description

technical field [0001] The invention relates to a method and a device for measuring blood pressure. In particular, the present invention relates to continuous non-invasive blood pressure measurement systems based on pulse wave velocity (PWV) measurements. Background technique [0002] Traditionally, blood pressure is measured by devices relying on cuff technology resulting in intermittent measurements. Intermittent measurement has several disadvantages, namely, it is slow and cumbersome, and additionally, it prevents blood from circulating for measurement. There are also known continuous measurement systems based on determining pulse wave velocity (PWV) and pulse transit time (PPT) measurements, wherein the pulse propagating in the blood vessel is determined and based on the wave velocity the blood pressure can be determined. However, the results of these continuous measurement systems are often very unreliable due to eg the motion of the patient to be measured or due to c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/021
CPCA61B5/7235A61B5/02108A61B5/681A61B5/0205A61B5/02125A61B5/02141A61B5/6824A61B5/6831A61B2560/0223A61B2560/0257A61B2562/0214A61B2562/0219A61B2562/0247A61B2562/028A61B2562/04
Inventor N·奥克萨拉S·梅尔科涅米
Owner NOKIA TECHNOLOGLES OY
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