Ferrule for non-planar medical device housing

A feedthrough assembly for an implantable medical device, comprising:

• an insulator body;
• and
• a ferrule including:
• a frame body including:
• an upper surface and an opposing lower surface;
• an interior perimeter surface extending between the upper and lower surfaces and defining an interior opening in which the insulator body is disposed;
• and
• an exterior perimeter surface extending between the upper and lower surfaces for attachment to a housing;
• and
• a flange extending from the exterior perimeter surface and having an upper surface facing the upper surface of the frame body, the upper surface of the flange to engage an interior surface of a housing of the implantable medical device to limit a distance of an exterior surface of the housing from the upper surface of the frame body along the exterior perimeter surface in a direction toward the bottom surface of the frame body, wherein a distance between the top surface of the flange and the top surface of the frame body is greater than and proportional to a thickness of the housing.

An implantable medical device, comprising:

• a housing having an inner surface and an outer surface defining a thickness there between;
• and
• a feedthrough device disposed within an opening in the housing, the feedthrough device including:
• an insulator body;
• and
• a ferrule including:
• a frame body including:
• an upper surface and an opposing lower surface;
• an interior perimeter surface extending between the upper and lower surfaces and defining an interior opening in which the insulator body is disposed;
• and
• an exterior perimeter surface extending between the upper and lower surfaces and butt-welded to an edge of the housing defining the housing opening;
• and
• a flange extending from the exterior perimeter surface and having an upper surface facing the upper surface of the frame body, the upper surface of the flange to engage the interior surface of a housing of the implantable medical device to limit a distance of an exterior surface of the housing from the upper surface of the frame body along the exterior perimeter surface in a direction toward the bottom surface of the frame body, wherein a distance between the top surface of the flange and the top surface of the frame body is greater than and proportional to the housing thickness.