Patent ID: 9020155
Filing Date: 2015-04-28
Classification: A61F

Abstract:
1. An electro-larynx comprising: a waveform generator configured to generate an input signal of a select frequency; a transducer comprising: a housing extending along a housing axis; a striker confined for movement along the housing axis; a bobbin comprising a support plate extending radially from the housing axis with the striker attached to the support plate at the housing axis, the bobbin further comprising a coil cylinder extending axially from the support plate opposite the striker, the coil cylinder being wrapped with a coiled wire electrically coupled to the waveform generator to create an electromagnetic field, an outer surface of the coiled wire being a uniform first distance from an inner surface of the housing in use, said uniform first distance defining a housing gap; a magnet mounted within the housing, said magnet being configured to interact with the electromagnetic field; and a guide disc telescopingly received within the coil cylinder, an outer surface of the guide disc being a uniform second distance from an inner surface of the coil cylinder, said uniform second distance defining a guide disc gap, wherein the magnet is sandwiched between the guide disc and the housing, wherein the housing gap is greater than the guide disc gap.