Patent ID: 7401679

Claim:
A sound tube adaptor for facilitating attachment of a sound tube to a hollow shell of a hearing aid, the hollow shell having a wall defining a cavity, the sound tube adaptor comprising: a first end for attachment to one end of the sound tube, a second end that is configured to be received in a hole in the wall of the shell, at least one first flange at the second end for abutment with an outer surface of the shell after insertion of the adaptor in the hole, and at least one second flange positioned at a distance from the at least one first flange along a longitudinal axis of the adaptor, the distance being approximately equal to a thickness of the wall at the hole, wherein the at least one second flange is for abutment with an inner surface of the wall of the shell after insertion of the adaptor in the hole, and wherein the at least one second flange is resilient to allow the at least one second flange to pass through the hole and subsequently expand beyond the circumference of the hole.