| 摘要 |
An earplug in the form of a preformed self-supporting body of malleable plastic material which is deformable under slight pressure, the body having a front face and a rear face, the front face having a generally convex surface adapted to conform to and cover the opening of the ear canal and the body having a size such that it is adapted to reside within the external ear when the generally convex surface is positioned over the opening of the ear canal, and a layer of pressure-sensitive adhesive so located on the convex surface as to releasably adhere the surface to the periphery of the ear canal opening.
|
