US 9,538,932 B2Granted

Electrocardiogram measuring apparatus and synthesized electrocardiogram generating method

AssigneeNihon Kohden Corporation

InventorJiro Suto

Life of this patent

Estimating the term…

Loading patent…

Abstract

An electrocardiogram measuring apparatus includes: a population coefficient calculating unit which calculates: first population coefficients; and second population coefficients; a personal coefficient calculating unit which calculates: first personal coefficients; and second personal coefficients; and a lead deriving unit which: calculates first personal coefficients of a specific subject based on: a relationship between a magnitude of a ratio of the first population coefficients to the second population coefficients, and a magnitude of a ratio of the first personal coefficients to the second personal coefficients; and second personal coefficients of the specific subject which are calculated based on A leads of the specific subject, the A leads being acquired by electrocardiogram measurement; and synthesizes B leads of the specific subject by using the first personal coefficients of the specific subject.

Claims8

Dependent claims

An electrocardiogram measuring apparatus comprising:

a lead waveform calculating unit which is configured to calculate a plurality of lead waveforms based on measured lead potentials of living body portions, the plurality of lead waveforms including A-lead waveforms and B-lead waveforms, wherein A is an integer of four or more and B is an integer of one or more, and the A-lead waveforms consisting of C-lead waveforms and D-lead waveforms, wherein C is an integer of three or more but less than A and D is A−C;
a population coefficient calculating unit which is configured to calculate:
first population coefficients for a population of a predetermined number of persons which synthesize the B-lead waveforms from the A-lead waveforms;
and
second population coefficients for the population which synthesize the D-lead waveforms from the C-lead waveforms by using the A-lead waveforms;
a personal coefficient calculating unit which is configured to calculate:
first personal coefficients for each person of the population which synthesize the B-lead waveforms from the A-lead waveforms, the first population coefficients being averages of the first personal coefficients;
and
second personal coefficients for each person of the population which synthesize the D-lead waveforms from the C-lead waveforms, the second population coefficients being averages of the second personal coefficients;
and
a lead deriving unit which is configured to:
calculate first personal coefficients of a specific subject based on:
a relationship between a magnitude of a ratio of the first population coefficients to the second population coefficients, and a magnitude of a ratio of the first personal coefficients to the second personal coefficients;
and
second personal coefficients of the specific subject which are calculated based on A-lead waveforms of the specific subject, the A-lead waveforms being acquired by electrocardiogram measurement;
synthesize B-lead waveforms of the specific subject by using the first personal coefficients of the specific subject;
and
add the B-lead waveforms of the specific subject to the A-lead waveforms of the specific subject to generate a synthesized electrocardiogram.

15 more elements

A synthesized electrocardiogram generating method comprising:

measuring lead potentials of living body portions, and calculating a plurality of lead waveforms based on the measured lead potentials, the plurality of lead waveforms including A-lead waveforms and B-lead waveforms, wherein A is an integer of four or more and B is an integer of one or more, and the A-lead waveforms consisting of C-lead waveforms and D-lead waveforms, wherein C is an integer of three or more but less than A and D is A−C;
calculating:
first population coefficients for a population of a predetermined number of persons which synthesize the B-lead waveforms from the A-lead waveforms;
and
second population coefficients for the population which synthesize the D-lead waveforms from the C-lead waveforms by using the A-lead waveforms;
calculating:
first personal coefficients for each person of the population which synthesize the B-lead waveforms from the A-lead waveforms, the first population coefficients being averages of the first personal coefficients;
and
second personal coefficients for each person of the population which synthesize the D-lead waveforms from the C-lead waveforms, the second population coefficients being averages of the second personal coefficients;
calculating a relationship between a magnitude of a ratio of the first population coefficients to the second population coefficients, and a magnitude of a ratio of the first personal coefficients to the second personal coefficients;
acquiring A-lead waveforms of a specific subject by electrocardiogram measurement, and calculating second personal coefficients of the specific subject based on the A-lead waveforms of the specific subject;
calculating first personal coefficients of the specific subject based on the relationship and the second personal coefficients of the specific subject;
deriving B-lead waveforms of the specific subject by using the first personal coefficients of the specific subject;
and
adding the B-lead waveforms of the specific subject to the A-lead waveforms of the specific subject to generate a synthesized electrocardiogram.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/524,424Filed 27 Oct 2014
Priority: JP 2013-22351428 Oct 2013
Published: US 2015/0119734 A130 Apr 2015
Granted: 10 Jan 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification3 codes

A61B 5/327
Heart-related electrical modalities, e.g. electrocardiography [ECG]: generation of artificial ECG signals based on measured signals, e.g. to…
A61B 5/319
Heart-related electrical modalities, e.g. electrocardiography [ECG]: circuits for simulating ECG signals
A61B
Medical diagnosis and surgery