| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an inexpensive earplug to be easily inserted into the acoustic meatus, to be stably held, excellently preventing howling and to be easily operated. SOLUTION: This earplug 8, comprising a main part 8a with a cup-shaped flange 6b and an ear wall adhesion part 8b with a cup-shaped flange 7b and having a sufficient length to be inserted deep into the acoustic meatus 11, is integrally formed of silicon rubber and has a piercing hole 15 piercing in the length direction. The earplug 8 is used by connecting it to a sound guide part of a hearing aid, etc. Since the earplug 8 is easily inserted into the acoustic meatus with the cup-shaped flange 7b closely adhering to the ear wall and the earplug 8 is stably held in the acoustic meatus to block noise, howling does not occur. In this way, an inexpensive earplug to easily be operated can be acquired.</p> |
