Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1997-06-17
1999-04-06
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
600518, A61N 139
Patent
active
058911707
ABSTRACT:
An active implantable medical device of the defibrillator/cardiovertor type with advanced tachycardia discrimination in which the device monitors the atrial and ventricular activity, suspects and confirms the presence of tachycardia episodes in the monitored activity, and operates a classification algorithm to discriminate between ventricular tachycardias and supra-ventricular tachycardias according to predetermined criteria and a given adjustment of these criteria, and to authorize the releasing of a shock therapy defibrillation, and/or cardioversion and/or anti-tachycardia ventricular stimulation in the presence ventricular tachycardias and to inhibit delivery of a shock therapy in the presence of a supra-ventricular tachycardias, or instead to release an atrial therapy. The advanced discrimination modifies the classification operation by being able to add temporarily one or more criterion and/or to modify temporarily the adjustment of an existing (predetermined) criterion in case of a suspected atrial fibrillation. Added criterion include particularly a supplementary research criterion of short and/or long RR intervals, which are significantly distanced from a zone of RR interval stability, which significantly distanced zones are, for example, separated from the RR interval stability zone by a predetermined width interval, which width interval is identical on both sides of the RR interval stability zone.
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Bonnet Jean-Luc
Iscolo Nicolas
Limousin Marcel
Nitzsche Remi
ELA Medical S.A.
Kamm William E.
Schaetzle Kennedy J.
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