Blood pressure measuring apparatus
First Claim
1. An apparatus for monitoring a blood pressure of a living subject, comprising:
- an inflatable cuff adapted to be wound around a body portion of the subject, said cuff being inflated to provide a pressure to press said body portion;
a detector which detects a plurality of pulse amplitudes produced in said cuff being inflated to press said body portion;
a pressure changing device which increases said pressure of said cuff to a prescribed value lower than a mean blood pressure of the subject, and subsequently decreases the cuff pressure from said prescribed value, in each of a plurality of periodic cycles;
rate-of-change determining means for determining, with respect to said cuff pressure, a rate of change of the pulse amplitudes detected by said detector while the cuff pressure is changed by said pressure changing device; and
first abnormality judging means for judging, based on the determined rate of change, whether said blood pressure of the subject is abnormal.
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Accused Products
Abstract
An apparatus for measuring a blood pressure of a living subject, including a blood pressure measuring device which measures a blood pressure value of the subject, a first memory which stores a plurality of blood pressure values measured by the blood pressure measuring device, in an order of measurement of the blood pressure values, a pulse wave detecting device which detects a pulse wave produced from an arterial vessel of the subject in synchronism with heartbeat of the subject while each of the blood pressure values is measured by the blood pressure measuring device, a second memory which stores a waveform of the pulse wave detected by the pulse wave detecting device, in the order, the second memory storing the respective waveforms of the pulse waves each of which is detected by the pulse wave detecting device while a corresponding one of the blood pressure values is measured by the blood pressure measuring device, and an output device which outputs the blood pressure values stored in the first memory, in the order, and a plurality of curves respectively representing the waveforms stored in the second memory, in the order, in a side-by-side relation with each other.
18 Citations
8 Claims
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1. An apparatus for monitoring a blood pressure of a living subject, comprising:
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an inflatable cuff adapted to be wound around a body portion of the subject, said cuff being inflated to provide a pressure to press said body portion; a detector which detects a plurality of pulse amplitudes produced in said cuff being inflated to press said body portion; a pressure changing device which increases said pressure of said cuff to a prescribed value lower than a mean blood pressure of the subject, and subsequently decreases the cuff pressure from said prescribed value, in each of a plurality of periodic cycles; rate-of-change determining means for determining, with respect to said cuff pressure, a rate of change of the pulse amplitudes detected by said detector while the cuff pressure is changed by said pressure changing device; and first abnormality judging means for judging, based on the determined rate of change, whether said blood pressure of the subject is abnormal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification