The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 18, 2002
Filed:
Jul. 14, 2000
ELA Medical S.A., Montrouge, FR;
Abstract
A rate-responsive active implantable medical device, in particular a cardiac pacemaker, defibrillator or cardiovertor, which is protected from the effects of bradycardia- and/or tachycardia-dependent extrasystoles. The device is able to stimulate at least one cardiac cavity by delivering low-energy pulses to the heart at a frequency determined by the device, and evaluates the activity level of the patient bearing the device and discriminates between phases of rest, normal activity and effort. Further, the device is capable of adjusting the frequency according to the determined activity level, more particularly decreasing the base frequency to a given minimum level during a rest phase. The device also detects the occurrence of brady-dependent extrasystoles, determines a corresponding extrasystole rate, and then increases the base frequency minimum level when the extrasystole rate exceeds a predetermined threshold during the rest phase. In a similar manner, tachy-dependent extrasystoles are diagnosed and the stimulation rate maximum is adjusted (reduced). These adjustments inhibit the appearance of extrasystoles.