Cochlear implant headpiece
First Claim
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1. A headpiece for use with a cochlear implant, comprising:
- a headpiece housing;
a circuit board within the housing;
a retention magnet within the headpiece housing that generates a retention magnetic field, the retention magnet including a bottom surface that faces the cochlear implant, a top surface that is opposite the bottom surface and that faces and is aligned with a portion the circuit board, and an outer radial surface between the top and bottom surfaces;
an induction coil within the headpiece housing that transmits audio signals to the cochlear implant by generating a telemetry magnetic field; and
a retention flux guide located within the headpiece housing and adjacent to the top surface of the retention magnet such that at least a portion of the retention flux guide is located between the top surface of the retention magnet and the portion of the circuit board that is aligned with the top surface of the retention magnet.
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Abstract
A headpiece for use with a cochlear implant including a headpiece housing, a retention magnet within the headpiece housing that generates a retention magnetic field, the retention magnet including a bottom surface that faces the cochlear implant, a top surface opposite the bottom surface, and an outer radial surface between the top and bottom surfaces, an induction coil within the headpiece housing that transmits audio signals to the cochlear implant by generating a telemetry magnetic field, and a retention flux guide within the headpiece housing and adjacent to the top surface of the retention magnet.
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Citations
26 Claims
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1. A headpiece for use with a cochlear implant, comprising:
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a headpiece housing; a circuit board within the housing; a retention magnet within the headpiece housing that generates a retention magnetic field, the retention magnet including a bottom surface that faces the cochlear implant, a top surface that is opposite the bottom surface and that faces and is aligned with a portion the circuit board, and an outer radial surface between the top and bottom surfaces; an induction coil within the headpiece housing that transmits audio signals to the cochlear implant by generating a telemetry magnetic field; and a retention flux guide located within the headpiece housing and adjacent to the top surface of the retention magnet such that at least a portion of the retention flux guide is located between the top surface of the retention magnet and the portion of the circuit board that is aligned with the top surface of the retention magnet. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, 26)
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6. A headpiece for use with a cochlear implant, comprising:
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a headpiece housing; a retention magnet within the headpiece housing that generates a retention magnetic field, the retention magnet including a bottom surface that faces the cochlear implant, a top surface opposite the bottom surface, and an outer radial surface between the top and bottom surfaces; an induction coil within the headpiece housing that transmits audio signals to the cochlear implant by generating a telemetry magnetic field; and a retention flux guide, formed from a material having a relatively high permeability, positioned within the headpiece housing and adjacent to the top surface of the retention magnet such that retention flux is directed inwardly of the induction coil.
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14. A headpiece for use with a cochlear implant, comprising:
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a headpiece housing; a retention magnet within the headpiece housing that generates a retention magnetic field, the retention magnet including a bottom surface that faces the cochlear implant, a top surface opposite the bottom surface, and an outer radial surface between the top and bottom surfaces; means, within the headpiece housing, for transmitting audio signals to the cochlear implant; and a retention flux guide within the headpiece housing that extends over the top surface of the retention magnet and that directs retention flux away from the means for transmitting audio signals. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification