Abstract: The present invention relates generally to biocompatible medical devices, such as cranial implants, and a method and means of attaching to hone. More specifically, the present invention relates to multilayered porous material with controlled porosity and drug load designed to control the release of drugs from a medical device. Additionally the present invention provides methods for controlling release of drugs by integrating the multilayer structure in medical devices with successive layers of polymer coatings of different porosities and drug contents. The multilayer material is inserted in between two plates such as meshes that provide strength to the implant. The present invention relates to biocompatible medical devices that has osseointegration and antibacterial properties. The present invention also relates to a method and means of attaching the medical device to defect in a bone structure and comprises of tree mounting parts configured to secure the medical in place.

Abstract: A configuration compensates for the pressure in a housing, in which at least one housing wall has a pressure compensation opening which is sealed with a semi-permeable membrane. The membrane is fixed, at least in a material fit to the housing wall and is covered by a protective element. Accordingly, the housing wall has, in the region of the pressure compensation opening, an indentation and/or recess for receiving the membrane. The respective periphery thereof corresponds to a periphery of the membrane and the height thereof corresponds at least to the thickness of the membrane.