Disclosed is a combination perfusion and occlusion device that can have a perfusion member, an occlusive member and an elongate member. The textured layers enhance light extraction or absorption. The ohmic contact has an oxidation rate when exposed to an oxidizing substance. The rupturable membrane operable to: retain the protectant material within the body cavity during storage and transport of the protective covering, and be ruptured during positioning of the body cavity over the exposed portion of the threaded fastener. The method is capable of achieving structures smaller than current lithography techniques. The backpressure chamber communicates with the supply passage.