ELECTRICAL FEEDTHROUGH FOR HOUSING OF ACTIVE IMPLANTABLE MEDICAL DEVICE

摘要

A housing of an active medical device includes a metal wall having at least one feedthrough for an electrical connection through the wall. In the area of the feedthrough, the housing wall includes a contour groove extending through the thickness of wall, defining a metal islet electrically and physically isolated from the rest of the wall. The housing wall further includes an electrically insulating outer layer on the outer side of the wall extending over a region in alignment with the groove and beyond either side of the groove. The insulating outer layer includes a recess formed in alignment with the islet. The wall further includes an electrically conductive outer layer formed outside of the insulating layer and extending over the region in alignment with the groove and beyond either side of the groove. The islet is mechanically supported by the insulating and conductive outer layers.

主权项

1. A housing of an active medical electronic device, comprising:
a metal wall having an outer side and an inner side, the wall being provided with at least one electrically isolated and sealed feedthrough for an electrical connection through the wall, the housing element further including in the area of the feedthrough: a contour groove, defining in the wall a metal islet electrically and physically isolated from the rest of the wall, said groove extending throughout the thickness of the wall; an electrically insulating outer layer on the outer side of the wall, extending over at least a region in alignment with the groove and beyond either side of the groove, the insulating outer layer comprising an recess formed in alignment with the islet through the entire thickness of the outer insulating layer; and an electrically conductive outer layer formed outside of the insulating layer and extending over the region in alignment with the groove and beyond either side of the groove; wherein the islet is mechanically supported by the insulating and conductive outer layers.