摘要: A motor operated, hand held apparatus for dislodging and removing of accumulated earwax within the canal a hearing aid. This utilizes narrow elongated tool which has spiral exterior surface is to be inserted aid operated at high speed remove move exteriorly canal. Associated with this cover movable different positions limit amount extension thereby eliminate any potential damage electronic mechanism
harvard.edu
aip.org
lens.org 参考文章(2)
Yoshihisa Tsuchimochi, Kenichi Mabuchi, Electric hand tool ,(1974)
Frank O'hara, John W. Miller, Depth-adjusting system for a power tool ,(1984)