US 2026/0083379 A1Published application

Low-power electrocardiogram (ecg) measurement method

AssigneeHexacheck Inc.

InventorIn-Duk HWANG

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Abstract

An electrocardiogram (ECG) measurement apparatus is disclosed for obtaining and displaying multiple ECG leads using a minimum set of electrodes and a smart device. The apparatus comprises: multiple electrodes, a constant voltage generator, and at least three amplifiers including at least one single-ended amplifier. In a first embodiment, three electrodes contact three limbs and one electrode contacts a precordial portion of a user. The apparatus obtains two limb-leads and one precordial-lead. A connected smartphone is enabled to generate four additional limb-leads from the two acquired limb-leads, and subsequently display six limb-leads along with the one precordial lead on the smartphone's screen. In a second embodiment, two electrodes contact two limbs and two electrodes contact two precordial portions of the user. The apparatus obtains one limb lead and two precordial leads. The apparatus provides a method for comprehensive ECG measurement using a minimal set of electrodes and leveraging a smart device.

Claims24

Dependent claims

An electrocardiogram measurement apparatus, comprising:

a first electrode configured to receive a first limb-lead signal from a first limb of a user;
a first amplifier and a first current detector coupled to the first electrode;
a second electrode configured to receive a second limb-lead signal from a second limb of the user;
a second amplifier and a second current detector coupled to the second electrode;
a constant voltage generator configured to supply a constant voltage;
a third electrode coupled to an output of the constant voltage generator and configured to transmit the constant voltage to a third limb of the user;
a fourth electrode configured to receive a first precordial-lead signal from a first precordial portion of the user;
a third amplifier and a third current detector coupled to the fourth electrode;
and
an AD converter having three inputs respectively coupled to the output terminals of the first amplifier, the second amplifier, and the third amplifier, and configured to convert the output signals of the three amplifiers into a first digital limb-lead signal and a second digital limb-lead signal corresponding to the outputs of the first amplifier and the second amplifier, and a first digital precordial-lead signal corresponding to the output of the third amplifier.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/402,802Filed 26 Nov 2025
Priority: KR 10-2017-01646021 Dec 2017
Published: 26 Mar 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification22 codes

A61B 5/332
Heart-related electrical modalities, e.g. electrocardiography [ECG]: portable devices specially adapted therefor
A61B 5/002
Characterised by features of the telemetry system: monitoring the patient using a local or closed circuit, e.g. in a room or building
A61B 5/02055
Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition:…
A61B 5/282
For electrocardiography [ECG]: holders for multiple electrodes

Family

Application18/098,293Continuation · filed 18 Jan 2023
Application19/022,731Continuation · filed 15 Jan 2025
Application19/261,440Continuation · filed 7 Jul 2025
Application19/402,802Continuation
Application16/768,769Continuation
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From the US filing history. Foreign family members aren’t listed.

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