Patent ID: 8577453
Filing Date: 2013-11-05
Classification: A61B,A61M,A61N

Abstract:
1. An implantable medical device, comprising: a hermetically sealed housing for electronic circuitry, wherein the hermetically sealed housing comprises a hermetically sealed feedthrough; a header housing mounted to the hermetically sealed housing over the feedthrough; a first conductor coupled to the electronic circuitry and routed through the feedthrough such that the first conductor passes into an interior space defined by the header housing; a feedthrough capacitor coupled to the first conductor in proximity to the feedthrough; at least one connector mounted within the header housing; and a first filter circuit mounted within the header housing and coupled between a first terminal of the at least one connector and the first conductor, wherein: the first filter circuit is electrically isolated from the header housing; and an impedance of the first filter circuit at an MRI scanning frequency is at least an order of magnitude greater than an impedance of the feedthrough capacitor at the MRI scanning frequency.