ANTENNA CONFIGURATION
1 Assignment
0 Petitions
Accused Products
Abstract
Power is transmitted to an implanted receiving coil oriented such that an axis of the receiving coil is parallel to skin of a subject. A transmitting coil is in a housing, which is placed against the skin. A central axis of the transmitting coil is perpendicular to the skin. A portion of the transmitting coil is over the receiving coil. A first distance, from the axis of the transmitting coil to a center of the receiving coil, is greater than a second distance, from the axis of the transmitting coil to an inner edge of the portion of the transmitting coil. The first distance is less than a third distance, from the axis of the transmitting coil to an outer edge of the portion of the transmitting coil. Circuitry powers the implant by driving current through the transmitting coil that induces current is the receiving coil.
14 Citations
102 Claims
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1-63. -63. (canceled)
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64. Apparatus for use with a medical implant that comprises a receiving coil, the apparatus comprising:
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a flexible housing configured to be placed against skin of a subject; a flexible transmitting coil disposed in the housing; control circuitry configured to transmit power to the medical implant by driving a current through the transmitting coil that induces an induced current in the receiving coil; a sensor coupled to the control circuitry, the sensor configured to determine an extent of divergence of (a) a resonance frequency of the transmitting coil when the transmitting coil is flexed from (b) a nominal resonance frequency of the transmitting coil, occurring in the absence of any forces applied to the transmitting coil, and configured to output a signal according to the determination; and one or more electrical components, coupled to the control circuitry and configured to tune the resonance frequency of the transmitting coil in response to the determination of the sensor. - View Dependent Claims (65, 66, 67, 72, 73, 74, 75, 77, 79, 82, 83, 85, 88, 97, 98, 99, 100, 101)
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68-71. -71. (canceled)
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76. (canceled)
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78. (canceled)
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80-81. -81. (canceled)
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84. (canceled)
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86-87. -87. (canceled)
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89-96. -96. (canceled)
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102. (canceled)
Specification