Abstract: Described herein is an implantable medical device including a housing, a header coupled to the housing, and a receptacle connector stack disposed in the header. The receptacle connector stack includes a plurality of electrical contacts and a plurality of wiper seals. Each electrical contact of the plurality of electrical contacts is separated by a corresponding wiper seal. A first sealing element is disposed at a proximal end of the receptacle connector stack and a second sealing element is disposed at a distal end of the receptacle connector stack. The sealing elements are mounted on respective seal housings. A third sealing element is disposed adjacent to the first sealing element and further proximal of the connector stack to restrict a bounce back effect caused by one or more of the plurality of wiper seals during insertion of a lead.

Abstract: Resonators for use in a transcutaneous energy transfer system (TETS) are provided. A resonator includes a housing, and a magnetic core positioned within the housing, the magnetic core including an annular sidewall and a central post that define an annular groove. The resonator further includes a coil element positioned within the annular groove and surrounding the central post, and a metal object coated with a conductive material, wherein the conductive material facilitates reducing an amount of heat induced during operation of the resonator.