Cardiac lead with zone insulated electrodes

Details Cardiac lead with zone insulated electrodes Cardiac lead with zone insulated electrodes

A - Human Necessities

61

N

A61N 1/05 (2006.01)

Patent

CA 2334268

An electrode (20) for a cardiac lead (10) and method of making the same are provided. The electrode includes an electrode member (28) and a coating (46) applied to the electrode member. The coating is composed of an electrically insulating material and covers a first portion of the exterior of the electrode member while leaving a preselected second portion thereof exposed. The second or exposed portion enhances the impedance of the electrode, resulting in power savings and extended life spans for implantable stimulation and sensing devices. Exemplary materials for the coating includes diamond-like carbon and sapphire.

On décrit une électrode (20) destinée à un fil (10) de stimulateur cardiaque ainsi qu'un procédé de fabrication associé. L'électrode comprend un élément (28) d'électrode et un revêtement (46) appliqué sur l'élément d'électrode. Le revêtement est constitué d'un matériau isolant électrique qui recouvre une première partie de l'extérieur de l'élément d'électrode et qui laisse exposée une deuxième partie de ce dernier. La deuxième partie qui est exposée améliore l'impédance de l'électrode, ce qui réduit la consommation d'énergie et allonge la durée de vie des dispositifs implantables de stimulation et de détection. Le revêtement peut être constitué de matériaux tels que le carbone du type diamant et le saphir.

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