Filtered feedthrough for an implantable medical device

Details Filtered feedthrough for an implantable medical device Filtered feedthrough for an implantable medical device

A - Human Necessities

61

N

A61N 1/375 (2006.01)

Patent

CA 2276705

A cardiac pacing system comprises a pulse generator which includes a housing. Electronics are placed within the housing. Attached to the pulse generator is a lead. The lead has electrodes which are attached to the surface of the heart. The lead carries signals to and from the heart. The electronics use the signals from the heart to make decisions regarding signals to send to the heart to correct for various arrhythmias. A capacitive filter for filtering out electromagnetic interference is positioned on the lead so that unfiltered electromagnetic interference remains outside the housing of the pulse generator. The capacitor can be positioned outside the housing or positioned within a ferrule in an opening of the housing.

L'invention porte sur simulateur cardiaque comprenant un générateur d'impulsions comportant un boîtier renfermant l'électronique. Un conducteur relié au générateur est muni d'électrodes fixées à la surface du coeur et acheminant les signaux en provenance et à destination du coeur. L'électronique utilise les signaux provenant du coeur pour prendre des décisions relatives aux signaux à envoyer au coeur pour corriger les différentes arythmies. Un filtre capacitif éliminant les interférences électromagnétiques est monté sur le conducteur de manière à ce que les interférences électromagnétiques non filtrées restent hors du boîtier du générateur d'impulsions. Le condensateur peut être monté hors du boîtier ou à l'intérieur d'une virole dans une ouverture du boîtier.

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