Transceiver coil for auditory prosthesis
First Claim
1. A tuned transmitter coil device for transcutaneous RF transmission of power and information from an external component of an auditory prosthesis to an implanted receiver, the transmitter coil device comprising a first shield for reducing a skin-to-coil capacitance, wherein the transmitter coil device and the first shield are formed on a printed circuit board and wherein the transmitter coil device comprises first and second layers of the printed circuit board, each of the first and second layers comprising a respective track, each track, the respective tracks being electrically connected to each other on the printed circuit board and each track defining a spiral with a plurality of turns, the first shield being positioned relative to the first and second layers of the transmitter coil device such that, when the transmitter coil device is brought close to the user'"'"'s skin for transcutaneous transmission of power and information, the first shield is positioned between the transmitter coil device and the user'"'"'s skin.
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Accused Products
Abstract
The invention provides a tuned transmitter coil for transcutaneous transmission of power and information from an external component of an auditory prosthesis to an implanted receiver. A shield is provided in order to reduce a skin-to-coil capacitance, thereby improving tuning stability of the coil from one user to the next. A shield may also be provided in order to reduce electromagnetic interference.
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Citations
82 Claims
- 1. A tuned transmitter coil device for transcutaneous RF transmission of power and information from an external component of an auditory prosthesis to an implanted receiver, the transmitter coil device comprising a first shield for reducing a skin-to-coil capacitance, wherein the transmitter coil device and the first shield are formed on a printed circuit board and wherein the transmitter coil device comprises first and second layers of the printed circuit board, each of the first and second layers comprising a respective track, each track, the respective tracks being electrically connected to each other on the printed circuit board and each track defining a spiral with a plurality of turns, the first shield being positioned relative to the first and second layers of the transmitter coil device such that, when the transmitter coil device is brought close to the user'"'"'s skin for transcutaneous transmission of power and information, the first shield is positioned between the transmitter coil device and the user'"'"'s skin.
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23. A transceiver for an auditory prosthesis comprising:
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a tuned transmitter coil for transcutaneous transmissions, tuned to a desired frequency of transmission; and a first shield for reducing a skin-to-coil capacitance wherein the transmitter coil and the first shield are formed on a printed circuit board and wherein the transmitter coil comprises first and second layers of the printed circuit board, each of the first and second layers comprising a respective track, the respective tracks being electrically connected to each other on the printed circuit board and each track defining a spiral with a plurality of turns, the first shield being positioned relative to the transmitter coil such that, when the transmitter coil is brought close to a user'"'"'s skin for transcutaneous transmission of power and information, the first shield is positioned between the transmitter coil and the user'"'"'s skin. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. An external processor unit for an auditory prosthesis, comprising:
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a transceiver comprising a tuned transmitter coil for transcutaneous transmission, tuned to a desired frequency of transmission; and a first shield for reducing a skin-to-coil capacitance wherein the transmitter coil and the first shield are formed on a printed circuit board and wherein the transmitter coil comprises first and second layers of the printed circuit board, each of the first and second layers comprising a respective track, the respective tracks being electrically connected to each other on the printed circuit board and each track defining a spiral with a plurality of turns the first shield being positioned relative to the transmitter coil such that, when the transmitter coil is brought close to a user'"'"'s skin for transcutaneous transmission of power and information, the first shield is positioned between the transmitter coil and the user'"'"'s skin. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66)
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67. An external processor unit for an auditory prosthesis, comprising:
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a transmitter coil for transmission of transcutaneous electromagnetic signals to an implant; a receiver for receiving wireless transmissions from a signal source; and a shield for reducing electromagnetic emissions of the transmission coil wherein the transmitter coil and the shield are formed on a printed circuit board and wherein the transmitter coil comprises first and second layers of the printed circuit board, each of the first and second layers comprising a respective track, the respective tracks being electrically connected to each other on the printed circuit board and each track defining a spiral with a plurality of turns, the shield being placed relative to the transmitter coil such that when the transmitter coil is brought into proximity to the user'"'"'s skin for transcutaneous transmission, the shield is positioned between the transmitter coil and the user'"'"'s skin. - View Dependent Claims (68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82)
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Specification