Title:
EXTENSION OF ELECTROCARDIOGRAPHY (ECG) ACQUISITION CAPABILITIES OF CATHETER-BASED CARDIAC SYSTEM
Document Type and Number:
Japanese Patent JP2021000445
Kind Code:
A
Abstract:
To remove the influence of a presystolic period and improve the measurement accuracy of pulse wave propagation times.SOLUTION: A method includes receiving an analog body-surface signal from a body-surface electrode, and multiple analog unipolar signals from multiple unipolar electrodes of an invasive probe. A first unipolar electrode is assigned to serve as a common electrical ground and a common timing reference for the analog unipolar signals and the analog body-surface signal. The analog unipolar signals are digitized to produce digital unipolar signals sampled relative to a digital ground. Defined are an analog bipolar signal between the first unipolar electrode and a second unipolar electrode of the probe, and a digital bipolar signal formed from the first unipolar electrode and the second unipolar electrode. Ground and timing offsets between the analog bipolar signal and the digital bipolar signal are estimated while the first unipolar electrode is connected to the digital ground. The ground offset and the timing offset are applied in measuring a third unipolar signal, sensed by a third unipolar electrode.SELECTED DRAWING: Figure 1
Inventors:
ALTMANN ANDRES
VADIM GLINER
ALON BOUMENDIL
GOVARI ASSAF
VADIM GLINER
ALON BOUMENDIL
GOVARI ASSAF
Application Number:
JP2020105211A
Publication Date:
January 07, 2021
Filing Date:
June 18, 2020
Export Citation:
Assignee:
BIOSENSE WEBSTER ISRAEL LTD
International Classes:
A61B5/318; A61B5/308; A61M25/00
Attorney, Agent or Firm:
Konobu Kato
Takafumi Oshima
Takafumi Oshima