Patent ID: 7793756

Claim:
A hearing aid comprising a shell or outer casing, at least one of a sound or acoustic exit opening with a protection element to prevent contamination of the hearing aid, the element comprising a thin at least partially flexible or elastic membrane made of a thermoplastic polymer, wherein the element is at least almost integrally arranged within the wall of the casing of the hearing aid or within a cavity of the casing such that the membrane is arranged in line to the outer surface of the casing or shell, wherein the protection element comprises an at least almost circular hollow cylinder-like body or carrier, whereby the one opening, preferably the opening of the body or carrier guided towards outside, seen from the device or hearing aid, is covered or terminated by the flexible membrane, and wherein the inside surface of the cylinder-like body or carrier is tapered directed towards an inner opening, which means diameter-tapered shaped towards the inside of the device.