| 摘要 |
An earplug for an ear canal includes a cap for plugging the ear canal. The cap has a cover tapered at one end and a hollow post extending centrally from the end. An air gap is formed between the cover and the post. The cover further includes a flexible rubbery material that adjusts shape to match a shape of the ear canal and seal the ear canal. An inner spring holds the cap in the ear canal. The inner spring has a plurality of spring leafs about a central axis to fit within the hollow post where the spring leafs are compressed about the central axis and a force of the spring leafs flexes the cap to hold the cap in the ear canal. A base is joined to an end of the inner spring for gripping the earplug for insertion and removal of the earplug from the ear canal.
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