Blood pressure monitoring system

a monitoring system and blood pressure technology, applied in the field of blood pressure monitoring system, can solve the problems of internal hemorrhage, burdened blood vessel around the cuff, and overlooked drastic changes in blood pressure, so as to achieve the effect of minimizing the burden on the subject and performing more accurately
USRE37852E1Inactive Publication Date: 2002-09-17NIHON KOHDEN CORP
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
NIHON KOHDEN CORP
Publication Date
2002-09-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

A blood pressure monitoring system includes a blood pressure measurement device for measuring blood pressure using a cuff, a memory for storing an externally inputted pulse wave propagation time fluctuation threshold, a time interval detection reference point detection section for detecting a time interval detection reference point in a pulse wave on the side of aortae of a living organism, a pulse wave detection section for detecting a pulse wave on the side of peripheral blood vessels appearing with a time lag with respect to the pulse wave on the side of aortae, a pulse wave propagation time measurement section for measuring a pulse wave propagation time based on respective detected outputs from the time interval detection reference point detection section and the pulse wave detection section, an operation device for calculating a pulse wave propagation fluctuation from two measured pulse wave propagation times, a judgment device for judging whether or not the calculated pulse wave propagation time fluctuation exceeds the pulse wave propagation time fluctuation threshold read from the memory, and a control device for controlling the blood pressure measurement device based on an output of the judgment device so that the blood pressure of a subject is measured using the cuff.
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Description

BACKGROUND OF THE INVENTION1. Field of the InventionThe invention relates to a blood pressure monitoring system in fields requiring continuous blood pressure monitoring of a patient in an operating room, an intensive care unit, a first-aid room, an extracorporeal dialysis room, and the like. More particularly, the invention is directed to a blood pressure monitoring system utilizing pulse wave propagation time.2. Related ArtTo monitor the blood pressure of a subject by continuously measuring his or her blood pressure, the following methods have heretofore been available. An oscillometric, noninvasive method is designed to measure blood pressure by wrapping a cuff to the upper part of an arm of the subject. A direct, invasive method is designed to measure blood pressure by puncturing an artery of the subject.By the way, the noninvasive blood pressure measuring method using the cuff may, in some cases, overlook a drastic change in blood pressure due to a shock when the measuring cycle...

Claims

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