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US 12,665,123 B2Granted
Inductance coil with varied geometry
AssigneeCochlear Limited
InventorsOliver John Ridler, Patrik Kennes, Kurt Forrester
Life of this patent
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Abstract
An inductance communication coil, including a conductor having at least one conductive turn, wherein a width of the conductor is wider at a first location relative to that at a second location. The conductor can be made out of metal. In some embodiments, the first location and the second location are on the same turn. In some embodiments, the conductor includes a plurality of turns, wherein the first location is at a first turn and the second location is at a second turn.
Claims16
An inductance communication coil, comprising:
- a coiled conductor including at least two turns on a first layer, wherein
- a maximum outer diameter of the highest diameter turn is about 40 mm, and
- the coiled conductor is of a configuration where a bare winding thereof, when subjected to an electrical current having a frequency of 5 MHz, has a Q factor of at least 75.
A method, comprising:
- transcutaneously transmitting, using a first coiled inductance antenna located outside the skin of the recipient, an inductance signal to an implanted second coiled inductance antenna, wherein
- a current is applied to the first coiled inductance antenna to generate a magnetic field, thereby transmitting the inductance signal, and
- an average current density at least one of increases or decreases with distance from a geometric center of turns of the first coiled inductance antenna over at least a portion of the distance from the geometric center.
Dependencies are inferred from the claim text.