Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Reexamination Certificate
2008-03-25
2008-03-25
Manuel, George (Department: 3762)
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
Reexamination Certificate
active
07349737
ABSTRACT:
An active implantable medical device, such as a double chamber pacemaker or defibrillator or cardiovertor, having an improved adjustment of atrial sensitivity and of atrial stimulation energy. This device includes control algorithms for suspecting a loss of atrial detection and/or atrial capture that operates by analysis of a sequence of detected stimulations and ventricular and atrial detections. The following conditions are detected: an absence of ventricular activity post-atrial stimulation; and/or a lengthening, beyond a given limit, of the atrio-ventricular conduction delay over a predetermined number of successive cardiac cycles; and/or an occurrence of an atrial detection consecutive to an atrial stimulation over a predetermined number of successive cardiac cycles; and/or a ventricular extrasystole; and/or reduction, below a given limit, of a delay between atrial stimulation and ventricular detection; and/or the passage of an atrial detection to an atrial stimulation with concomitant reduction, below a given limit, of the delay between atrial event and ventricular detection. The atrial detection threshold and/or the atrial stimulation energy are adjusted, preferably stepwise, according to the detected conditions to provide improved patient care.
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ELA Medical S.A.S.
Manuel George
Orrick Herrington & Sutcliffe LLP
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