Thin profile conductor assembly for medical device leads

摘要

A medical device lead includes a thin profile conductor assembly. A proximal connector includes a proximal end that is configured to couple the lead to a pulse generator. An insulative lead body extends distally from the proximal connector. The conductor assembly extends distally from the proximal end within the lead body and includes a non-conductive tubular core member that defines a lumen, an outer insulative layer, and a multilayer conductor between the tubular core member and the outer insulative layer. The multilayer conductor is electrically connected to the proximal connector and includes a first conductive layer adjacent to the tubular core member and a second conductive layer adjacent to the first conductive layer opposite the tubular core member. A conductivity of the second conductive layer is greater than a conductivity of the first conductive layer.

主权项

1. A method for making a conductive assembly for a medical electrical lead, the method comprising:
masking a non-conductive tubular core member by winding a mask helically around the non-conductive tubular core member to form gaps between adjacent turns of the mask, wherein the tubular core member defines a lumen; depositing a first conductive layer on the masked tubular core member, the first conductive layer deposited on the non-conductive tubular core member in the gaps between adjacent turns of the mask; depositing a second conductive layer on the first conductive layer, wherein the second conductive layer has a conductivity greater than the first conductive layer; removing the mask from the tubular core member such that portions of the first conductive layer and the second conductive layer deposited on the mask are removed with the mask and a helical conductive pattern remains on the tubular core member, the helical conductive pattern comprising the first conductive layer and the second conductive layer; and covering the tubular core member and the helical conductive pattern with a first insulative layer.