Patent ID: 8755548

Claim:
An ear mould, in cooperation with a hearing aid, used for assisting positioning and sound transmission of a receiver of the hearing aid in an ear canal, comprising a head of the ear mould and a sound transmission device connected with the head of the ear mould, the sound transmission device being for connection with a speaker of the hearing aid, wherein the head of the ear mould is integrated with the sound transmission device, the end of sound transmission device which is connected with the hearing aid is elastic, the part of the sound transmission device which is connected with the head of the ear mould is flexible; and a protection component is disposed in the ear mould, the protection component is pole-shaped, a plurality of air communication holes are formed when the protection component contacts with the ear mould; wherein the head of the ear mould comprises a front portion, a middle portion and a rear portion, the middle portion of the head of the ear mould contacts with a wall of the ear canal when the ear mould is positioned in the ear canal, the rear portion of the head of the ear mould at least partly contacts with the sound transmission device; wherein the sound transmission device is a hearing hose, the rear portion of the head of the ear mould slidably or non-slidably contacts with a surface of the hearing hose when it is pressed by the wall of ear canal and deformed in a radial direction; wherein the rear portion of the head of the ear module does not contact with an external surface of the hearing hose when the ear module is in non-use state and the rear portion of the head of the module is in a free state; wherein the head of the ear module is drum-shaped and its surface is smooth, there is a space between the middle portion of the head of the ear mould and the sound transmission device; wherein the front portion of the head of the ear mould or a portion in which the front portion of the head of the ear mould coupled with the hearing hose comprises at least one air communication hole communicated with the space; wherein the rear portion of the head of the ear mold has a plurality of slots arranged along an outer peripheral edge that form air outlet through holes when they are deformed in the radial direction and pressed against the hearing hose.