Patent ID: 8059386
Filing Date: 2011-11-15
Classification: A61N,H01G,H03H

Abstract:
1. A filtered feedthrough assembly for an implantable medical device, the assembly comprising: a ferrule; a feedthrough member extending through the ferrule; a capacitive element located within the ferrule and surrounding the feedthrough member, the capacitive element including a first bore being formed by a non-conductive surface extending about a first portion of the member, a second bore being formed by a surface extending about a second portion of the member and being overlaid with at least one layer of a conductive material, wherein a diameter of the second bore being greater than a diameter of the first bore and the capacitive element further includes a third bore being formed by a surface tapering from the diameter of the second bore to the diameter of the first bore and at least one electrode plate extending away from the second bore and being electrically coupled to the at least one layer of the conductive material; and a conductive material extending between the second portion of the feedthrough member and the overlaid surface forming the second bore in order to electrically couple the member to the at least one electrode plate, wherein a maximum gap between the first portion of the feedthrough member and the surface forming the first bore being less than a minimum gap between the second portion of the feedthrough member and the overlaid surface forming the second bore.