Sphygmomanometer with an arrhythmia detecting mechanism
First Claim
1. A sphygmomanometer comprising (1) a blood pressure measuring apparatus including a pulsation detector means which collects pulse sounds including Korotkoff sounds for electrically converting said pulse sounds into wave signals of the vascular pulse wave and outputting the same, and means for detecting the Korotkoff sounds and indicating the blood pressure value;
- and (2) an arrhythmia detecting means coupled to the output of said pulsation detecter means, which receives said wave signals of the vascular pulse wave output from said pulsation detector means and compares the cycle of said wave signals with a predetermined criterion for electrically detecting the irregularities, if any, in said cycle, and wherein said arrhythmia detecting means comprises;
a circuit for converting a pulse interval, which spans the time froma given base point of a pulse to a corresponding given base point of the next pulse, said base points being in the same phase of successive cycles, into a representative signal corresponding to said pulse interval;
window comparator means for comparing said representative signal with a predetermined criterion in order to check whether said representative signal is within the limit of allowance; and
an indicating means for indicating arrhythmia by means of the output of said window comparator;
whereby the sphygmomanometer is able to do diagnosis of arrhythmia simultaneously with the measurement of the blood pressure.
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Abstract
A sphygmomanometer having a built-in arrhythmia detecting mechanism, wherein the blood pressure measuring portion contains a pulsation detector, which receives pulse sounds including Korotkoff sounds for electrically converting the pulse sounds into wave form signals of the vascular pulse wave and output the same, and a mechanism indicating the blood pressure value by means of detecting the Korotkoff sounds recognized and separated from the wave form signals of the vascular pulse wave output in the above-mentioned way; the incorporated arrhythmia detecting mechanism receives the wave form signals of the vascular pulse wave for comparing the cycle of the wave form signals with a predetermined criterion in order to electrically detect irregularities, if any, in the signals for detecting the existence of arrhythmias. This sphygmomanometer is capable of measuring the blood pressure simultaneously with the detecting of arrhythmia.
35 Citations
10 Claims
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1. A sphygmomanometer comprising (1) a blood pressure measuring apparatus including a pulsation detector means which collects pulse sounds including Korotkoff sounds for electrically converting said pulse sounds into wave signals of the vascular pulse wave and outputting the same, and means for detecting the Korotkoff sounds and indicating the blood pressure value;
- and (2) an arrhythmia detecting means coupled to the output of said pulsation detecter means, which receives said wave signals of the vascular pulse wave output from said pulsation detector means and compares the cycle of said wave signals with a predetermined criterion for electrically detecting the irregularities, if any, in said cycle, and wherein said arrhythmia detecting means comprises;
a circuit for converting a pulse interval, which spans the time froma given base point of a pulse to a corresponding given base point of the next pulse, said base points being in the same phase of successive cycles, into a representative signal corresponding to said pulse interval;
window comparator means for comparing said representative signal with a predetermined criterion in order to check whether said representative signal is within the limit of allowance; and
an indicating means for indicating arrhythmia by means of the output of said window comparator;
whereby the sphygmomanometer is able to do diagnosis of arrhythmia simultaneously with the measurement of the blood pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- and (2) an arrhythmia detecting means coupled to the output of said pulsation detecter means, which receives said wave signals of the vascular pulse wave output from said pulsation detector means and compares the cycle of said wave signals with a predetermined criterion for electrically detecting the irregularities, if any, in said cycle, and wherein said arrhythmia detecting means comprises;
Specification