Patent ID: 8755549

Claim:
A universal flexible in-the-ear hearing aid, comprising a front portion of the hearing aid, a middle portion of the hearing aid and a rear portion of the hearing aid, the front portion of the hearing aid including a speaker, the rear portion of the hearing aid including a main body, the middle portion of the hearing aid including a sound transmission device, the sound transmission device is a flexible or soft-connection device, an end of the soft-connection device connected to the front portion of the hearing aid, another end of the soft-connection device connected to the rear portion of the hearing aid; wherein the main body composed by function components and an external housing of the main body, the function components disposed in the external housing of the main body, the external housing of the main body made of the material of single or composite materials, medical or non-medical grade material, non-metallic or metallic material, elastic or non-elastic material; wherein one or multiple elastic ring, or completely or partly covered by an elastic shield, the elastic ring or the shield is made of single or composite materials, medical or non-medical grade material, non-metallic or metallic elastic material; wherein a shape of the elastic ring is designed to make a complete rubber ring in advance, then disposing teeth shaped or protruded portions on the rubber ring, so as to the contacting realized between the protruded portions and the ear canal, in such left an air communication space between the wall of the ear canal and the rubber ring, so that enhanced the comfort ability of the user's human body.