Patent ID: 8195281

Claim:
An active medical device comprising: a. a means for collecting an electrical activity of a patient's heart, including a means for producing at least two distinct temporal components corresponding to two distinct EGM signals of a ventricular electrogram; 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; b. a means for detecting a presence of a tachycardia episode the two distinct EGM signals of a ventricular electrogram; and c. a diagnosis means for diagnosing a ventricular tachyarrhythmia including means for discriminating in the detected tachycardias between a Ventricular Tachycardia and a Supra-Ventricular Tachycardia the diagnosis means further comprising: i. a means for conducting a bi-dimensional analysis, able to determine, from a variation 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 ii. discriminator means further comprising means for comparing: 1. a first current 2D characteristic, representative of a tachycardia beat wherein the two EGM signals collected are during a tachycardia episode, and 2. a second reference 2D characteristic, representative of a Sinus Rhythm beat wherein the two EGM signals are collected from non-tachycardia episodes.