US Patent 8442252 Behind-the-ear hearing aid with interchangeable ear hook and ear tube

A hearing aid includes a casing, an ear hook, and an ear tube. The casing includes a first connector on an upper portion of the casing and a second connector on a lower portion of the casing, wherein the first and second connectors are substantially identical. The ear hook includes a receptacle sized to fit the first and second connectors and adapted to releasably couple to one of the first connector and the second connector. The ear tube includes a receptacle sized to fit the first and second connectors and adapted to releasably couple to another of the first connector and the second connector.