Novel distal portions for medical electrical leads

A - Human Necessities – 61 – N

Patent

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A61N 1/05 (2006.01)

Patent

CA 2578169

A medical electrical lead includes a canted lead body distal portion extending from an approximately straight lead body proximal portion and including an approximately straight segment and a hump-like segment extending from a first end, in proximity to the approximately straight segment, to a second end. A first electrode is coupled to the approximately straight segment of the distal portion and a second electrode coupled to the distal portion in proximity to a second end of the hump-like segment. A medical electrode includes an active surface extending from a first end to a second end and has a maximum outer diameter exceeding an outer diameter of the both the first end and the second end. The electrode further includes a recess formed in the active surface and an agent held in the recess and adapted to disperse out from the recess upon implantation of the electrode.

L'invention concerne un fil électrique médical dont le corps comprend une section distale inclinable s'étendant d'une section proximale sensiblement droite du corps du fil et comprenant un segment sensiblement droit et un segment en forme de bosse s'étendant à partir d'une première extrémité, près du segment sensiblement droit, jusqu'à une seconde extrémité. Une première électrode est couplée au segment sensiblement droit de la section distale et une seconde électrode couplée à la section distale près d'une seconde extrémité du segment en forme de bosse. Une électrode médicale présente une surface active s'étendant d'une première extrémité à une seconde extrémité, et un diamètre extérieur maximal dépassant le diamètre extérieur de la première extrémité et de la seconde extrémité. L'électrode comprend également une cavité formée dans la surface active, et un agent contenu dans la cavité et adapté pour être dispersé hors de la cavité lors de l'implantation de l'électrode.

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