Electronic lead for a medical implant device, method of...

A - Human Necessities – 61 – N

Patent

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A61N 1/05 (2006.01)

Patent

CA 2459335

An implantable coaxial lead includes a cable with male and female connectors. The cable includes inner and outer helical coils separated by an inner insulator tube, with an outer insulator tube surrounding the outer helical coil. The male connector includes an outer conductive cylinder, a conductive pin and an insulator molded in between. For increased strength, a braided cylinder, infused with rubber, is included at the juncture of the male connector and the cable. The female connector includes a cylinder formed by two conducting body elements (400, 402) and an intervening insulating body element (401). The female connector includes respective conductive tension elements (408, 416) configured to engage the male connector. A first seal (412) is provided between the conductive tension members for electrical isolation and tactile feedback. An insertion tool includes a cylinder with a hollow bore and detachable head, and a rod for pulling the lead through the cylinder.

La présente invention concerne un conducteur coaxial implantable qui comprend un câble muni de connecteurs mâle et femelle. Le câble comprend des bobines hélicoïdales intérieure et extérieure séparées par un tube isolant interne, la bobine hélicoïdale extérieure étant entourée par un tube isolant externe. Le connecteur mâle comprend un cylindre conducteur extérieur, une broche conductrice et un isolant moulé entre eux. Un cylindre tressé, imprégné de caoutchouc, est placé à la jonction entre le connecteur mâle et le câble afin d'augmenter la résistance de ce dernier. Le connecteur femelle comprend un cylindre formé par deux éléments de corps conducteurs (400, 402) entre lesquels est intercalé un élément de corps isolant (401). Le connecteur femelle comprend des éléments de tension conducteurs respectifs (408, 416) configurés pour coopérer avec le connecteur mâle. Un premier joint (412) est placé entre les éléments de tension conducteurs afin de fournir une isolation électrique et une perception tactile. Un outil d'insertion comprend un cylindre à alésage creux et tête détachable, et une tige qui permet de tirer le conducteur à travers le cylindre.

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