| 摘要 |
<p>Universal ear-plug with anatomically designed elastic ear-piece and pull-out extension; ear-piece (6) comes in at least two sizes consisting of an conical-shaped outer section (7) tapered from the outer section to which the pull-out extension (5) is affixed, and which continues in the inner section (8) that is shaped to fit the Isthmus of the auditory meatus of the ear, bevelled toward the outer section (7) at an obtuse angles , featuring a decreasing diameter in smaller sizes or even or increasing in diameter in larger sizes.</p> |
