US 11,141,114 B2Granted

Method and apparatus for wide-band phase gradient signal acquisition

AssigneeAnalytics For Life Inc.

InventorsSunny Gupta, Konstantin Papirov, Jason Woo

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Abstract

The present disclosure facilitates capture (e.g., bipolar capture) of differentially-acquired wide-band phase gradient signals (e.g., wide-band cardiac phase gradient signals, wide-band cerebral phase gradient signals) that are simultaneously sampled. Notably, the exemplified system minimizes non-linear distortions (e.g., those that can be introduced via certain filters such as phase distortions) in the acquired wide-band phase gradient signals so as to not affect the information therein that can non-deterministically affect analysis of the wide-band phase gradient signal in the phase space domain. Further, a shield drive circuit and shield-drive voltage plane may be used to facilitate low noise and low interference operation of the acquisition system.

Claims22

Dependent claims

An apparatus comprising:

a plurality of bio-signal acquisition channels, each bio-signal acquisition channel comprising a gain amplifier configured to, by bipolar sensing for each input, amplify differential biopotential signals received from a pair of associated surface electrodes placed on a patient to generate a differential wide-band cardiac phase gradient signal, wherein each differential biopotential signal is amplified without filtering that causes distortion in the generated wide-band cardiac phase gradient signal above 1 kHz, each output of the bio-signal acquisition channels feeding an analog-to-digital conversion circuit that simultaneously samples, each of bio-signal acquisition channels to generate a differential wide-band cardiac phase gradient signal data set,
wherein the generated differential wide-band cardiac phase gradient signal data set or a portion thereof is analyzed, in a phase-associated analysis, along with a data set associated with oxygen saturation readings concurrently acquired with the biopotential signals of the plurality of bio-signal acquisition channels, to generate an output data set in a report and/or a display, and wherein the output data set is used in a diagnosis of cardiac disease.

Dependencies are inferred from the claim text.

Facts

Application: 15/911,047Filed 2 Mar 2018 · us provisional application
Priority: 2 Mar 2017
Published: US 2018/0249960 A16 Sep 2018
Granted: 12 Oct 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification19 codes

A61B 5/7203
Signal processing specially adapted for physiological signals or for diagnostic purposes: for noise prevention, reduction or removal
A61B 5/282
For electrocardiography [ECG]: holders for multiple electrodes
A61B 5/308
Specially adapted for particular uses: for electrocardiography [ECG]
A61B 5/318
Modalities, i.e. specific diagnostic methods: heart-related electrical modalities, e.g. electrocardiography [ECG]