Electrolarynx
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United States of America Patent
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Apr 28, 2015
Grant Date -
Mar 20, 2014
app pub date -
Sep 14, 2012
filing date -
Sep 14, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An electrolarynx includes a motor having a locating diaphragm, a bobbin, and a magnetic assembly. The bobbin includes a striker and coil wires wound about a coil cylinder of an electromagnet. The locating diaphragm maintains the position of the bobbin along the longitudinal axis of the housing. The magnetic assembly includes a magnet and a non-magnetic guide disc that sandwiches the magnet to the housing. The magnet and the coil wires drive the striker and, in turn, a contact diaphragm in the cap of the electrolarynx that makes contact with a patient's throat to produce vibrations similar to those produced by the larynx. To avoid “gravitational wear” of the coil wires against a magnetic cup used to center the coil wires, the walls of the cup are made thinner and the magnetic cup may be replaced with a non-magnetic cup or the magnetic cup is removed altogether.
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