| 摘要 |
PROBLEM TO BE SOLVED: To provide a hearing aid earplug capable of preventing the occurrence of a howling (sound leakage) phenomenon by a simple means. SOLUTION: A hearing aid earplug having a shape corresponding to an external auditory meatus includes a silicone resin joined to the vicinity of a portion corresponding to the first to second bent portions of the external auditory meatus. The vicinity of the portion corresponding to the first to second bent portions of the external auditory meatus forms an ear mold having a precut recess, the recess is coated with a silicone resin, then hardened, or a silicone resin is coated on the vicinity of the portion corresponding to the first to second bent portions of the external auditory meatus in an existing earplug and then inserted into the external auditory meatus, and after the silicone resin is hardened, it is removed from the external auditory meatus, and thus manufacturing is completed. |
