Patent ID: 8653384
Filing Date: 2014-02-18
Classification: A61N,B23K,C22C,H01G,H01R,H02G,Y10T

Abstract:
1. A hermetically sealed feedthrough that is attachable to an active implantable medical device, the feedthrough comprising: a) an alumina substrate comprised of at least 96% alumina and having a thickness extending from a body fluid side to a device side; b) a via hole disposed through the alumina substrate from the body fluid side to the device side; c) a substantially closed pore and substantially pure platinum fill disposed within the via hole and extending between the body fluid side and the device side of the alumina substrate; and d) a hermetic seal between the platinum fill and the alumina substrate, e) wherein the platinum fill forms a tortuous and mutually conformal knitline or interface between the alumina substrate and the platinum fill.