DISCRIMINATING BETWEEN TACHYCARDIAS OF VENTRICULAR ORIGIN AND SUPRA ENTRICULAR ORIGIN, METHODS AND APPARATUS
First Claim
1. An active medical device, having means for collecting an electrical activity of a patient'"'"'s heart, including means for producing at least two distinct temporal components corresponding to two EGM signals of a ventricular electrogram;
- means for detecting a presence of a tachycardia episode in said collected electrical activity; and
diagnosis means for diagnosing a ventricular tachyarrhythmia including means for discriminating in the detected tachycardias between a Ventricular Tachycardia originated in the ventricles and a Supra-Ventricular Tachycardia originated above the ventricles, wherein the improvement comprises;
the collecting means further comprising means for producing a first and a second distinct temporal components from said two distinct EGM signals of ventricular electrogram;
the diagnosis means further comprises means for conducting a bi-dimensional analysis, able to determine, from the variations of one of said first and second temporal components as a function of the other of said first and second temporal components, a 2D characteristic representative of a heart beat; and
discriminator means further comprising means for comparing;
a first current 2D characteristic, representative of a tachycardia beat (SVT, VT), from said at least two EGM signals collected during a tachycardia episode, witha second reference 2D characteristic, representative of a Sinus Rhythm (SR) beat from said two EGM signals, collected from non-tachycardia episodes.
2 Assignments
0 Petitions
Accused Products
Abstract
An active medical device able to discriminate between tachycardias of ventricular origin and of supra-ventricular origin. Two distinct temporal components (UnipV, BipV) are obtained corresponding to two EGM signals of ventricular electrograms. The diagnosis operates in at least two-dimensional space to determine, from the variations of one temporal component as a function of the other temporal component, a 2D characteristic representative of a heart beat and, this, for a reference beat collected in Sinus Rhythm (SR) in the absence of tachycardia episodes, and for a heart beat in Tachycardia. The discrimination of the tachycardia type, VT or SVT, is then realized by a classifier operating a comparison of the two current and reference 2D characteristics.
19 Citations
29 Claims
-
1. An active medical device, having means for collecting an electrical activity of a patient'"'"'s heart, including means for producing at least two distinct temporal components corresponding to two EGM signals of a ventricular electrogram;
- means for detecting a presence of a tachycardia episode in said collected electrical activity; and
diagnosis means for diagnosing a ventricular tachyarrhythmia including means for discriminating in the detected tachycardias between a Ventricular Tachycardia originated in the ventricles and a Supra-Ventricular Tachycardia originated above the ventricles, wherein the improvement comprises;the collecting means further comprising means for producing a first and a second distinct temporal components from said two distinct EGM signals of ventricular electrogram; the diagnosis means further comprises means for conducting a bi-dimensional analysis, able to determine, from the variations of one of said first and second temporal components as a function of the other of said first and second temporal components, a 2D characteristic representative of a heart beat; and discriminator means further comprising means for comparing; a first current 2D characteristic, representative of a tachycardia beat (SVT, VT), from said at least two EGM signals collected during a tachycardia episode, with a second reference 2D characteristic, representative of a Sinus Rhythm (SR) beat from said two EGM signals, collected from non-tachycardia episodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
- means for detecting a presence of a tachycardia episode in said collected electrical activity; and
Specification