Multi-polar feedthrough array for analog and/or digital...

A - Human Necessities – 61 – N

Patent

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A61N 1/375 (2006.01)

Patent

CA 2573417

According to one aspect of the invention, an improved multi-polar feedthrough array employs a particular metallic ferrule material for improved dimensional stability during initial fabrication and sustained hermetic operation. According to the invention, the IMD enclosure consists of grade 2 titanium and the ferrule material comprises grade 4 titanium or grade 5 titanium. In one form of the invention, the multi-polar feedthrough assembly comprises a filtered feedthrough array (e.g., employing capacitive filters coupled to the electrically conductive pins or serpentine conductors of the array). According to another aspect of the invention, the improved multi-polar feedthrough array incorporates additional pins, thus further increasing the footprint of the array, and the additional pins provide analog electrical communication between operative circuitry inside an IMD and analog components external to the IMD.

Un aspect de la présente invention concerne des améliorations apportées à un réseau d'interconnexion multipolaire comprenant un matériau de ferrule métallique particulier pour améliorer la stabilité dimensionnelle durant la fabrication initiale et un fonctionnement hermétique soutenu. Selon l'invention, le boîtier d'un dispositif médical implantable se compose de titane grade 2 et le matériau de ferrule se compose de titane grade 4 ou de titane grade 5. Dans un mode de réalisation de l'invention, l'ensemble d'interconnexion multipolaire comprend un réseau d'interconnexion filtré (comportant des filtres capacitifs couplés aux broches conductrices ou à des conducteurs en serpentin du réseau, par exemple). Dans un autre aspect de l'invention, le réseau d'interconnexion multipolaire comporte des broches supplémentaires, ce qui augmente davantage le pas du réseau, les broches supplémentaires fournissant un moyen de communication électrique analogique entre les circuits fonctionnels situés à l'intérieur d'un dispositif médical implantable et des composants analogiques externes.

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