Electronic sphygmomanometer
AssigneeTerumo Kabushiki Kaisha
InventorTakahiro Souma
Life of this patent
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Abstract
An electronic sphygmomanometer employing both the Korotkoff method and the oscillometric method which is thereby capable of accurately measuring blood pressure due to the two advantages of the above-described two methods. The electronic sphygmomanometer is arranged in such a manner that either of the results of measurements of the two methods can be automatically selected. A gate for detecting the Korotkoff sound by using an oscillation in cuff pressure is automatically stopped, and that the validity of the Korotkoff sound is determined in accordance with a change in the height of the oscillating pulse wave.
Claims2
An electronic sphygmomanometer for measuring blood pressure by pressing a portion of a living body by means of a cuff, comprising:
- Korotkoff sound detection means for detecting Korotkoff sounds by means of a sound sensor coupled to the cuff;
- oscillating pulse wave detection means for detecting oscillating pulse waves by means of a pressure sensor which senses a pressure of the cuff;
- point detection means for detecting a point of a systolic blood pressure and a point of a diastolic blood pressure in accordance with an appearance of a disappearance of Korotkoff sound as detected by said sound detection means;
- determining means for determining a validity of points detected by said point detection means, in accordance with a height of an oscillating pulse wave, detected by said oscillating pulse wave detection means, at a detected point and in accordance with a change in height of said oscillating pulse waves in a vicinity of the detected point;
- and
- display means for displaying the blood pressure at said points so as to enable discrimination of a result of said determination made by said determining means.
Dependencies are inferred from the claim text.