Atrial activity signal estimation using independent component analysis

摘要

A single-chamber implantable device for detecting a patient's atrial activity using a monobody lead is disclosed. The monobody lead (10) includes a ventricular coil (16), a supraventricular coil (18), a distal electrode (14) forming three electrodes for detecting depolarization signals. A generator (12) of the implantable device collects a first unipolar signal (20) between the ventricular coil and the generator housing and a second unipolar signal (22) between the supraventricular coil and the generator housing. An independent component analysis is performed to the detected depolarization signals to determine an estimated atrial activity signal from the first and second unipolar signals.

主权项

1. An active implantable medical device for estimating an atrial activity signal representative of a patient's atrial depolarization activity, comprising:
a lead comprising:
a ventricular coil configured to detect depolarization signals from a ventricle of a patient; anda supraventricular coil configured to detect depolarization signals from a superior vena cava of the patient; and a generator comprising:
a housing forming a metal reference potential electrode; andcircuitry configured to:
collect a first unipolar signal between the housing of the generator and the ventricular coil,collect a second unipolar signal between the housing of the generator and the supraventricular coil,perform an Independent Component Analysis (ICA) on the first and second unipolar signals, anddetermine, based on the ICA performed on the first and second unipolar signals, an estimated atrial activity signal.