Patent ID: 9031662
Filing Date: 2015-05-12
Classification: A61F,A61N,H04R

Abstract:
1. An implantable medical device configured to be implanted in a recipient, comprising: an implantable case; a receiver unit electrically connected to one or more components in the implantable case; and a silicone shell configured to substantially encapsulate the case and the receiver unit, wherein one or more portions of an exterior surface of the silicone shell have a surface smoothness that is smoother than about 0.4 μm Ra to inhibit formation of a biofilm thereon after implantation in the recipient, and wherein the silicone shell comprises an arcuate depression adjacent to the receiver unit to provide flexibility to the receiver unit thereby permitting the receiver unit to flex about a contour of a skull of the recipient, and wherein a ratio of the width to depth of the arcuate depression is 2 or more at all locations of the arcuate depression.