Power supply for a retina implant

摘要

A power supply for a retina implant at least partly located in the interior of a patient's eye is described. The power supply comprises a first transmission coil (4, 23), a second transmission coil (5, 24). The power supply further comprises a signal generation unit adapted for generating a first high frequency signal and a second high frequency signal, and for applying the first high frequency signal to the first transmission coil and the second high frequency signal to the second transmission coil, the second high frequency signal being phase shifted relative to the first high frequency signal. The first transmission coil is adapted for transmitting the first high frequency signal, and the second transmission coil is adapted for transmitting the second high frequency signal.

主权项

1. A power supply for a retina implant adapted to be at least partly located in the interior of a patient's eye, the power supply comprising a first transmission coil;
a second transmission coil; a signal generation unit adapted for generating a high frequency signal; a phase shifter configured to convert the high frequency signal generated by the signal generation unit into a first high frequency signal that is applied to the first transmission coil and a second high frequency signal that is applied to the second transmission coil, wherein the phase shifter is configured to shift a phase of the first high frequency signal relative to the second high frequency signal; wherein the first transmission coil is adapted for transmitting the first high frequency signal to a receiver coil, and wherein the second transmission coil is adapted for transmitting the second high frequency signal to the receiver coil, wherein the first high frequency signal and the second high frequency signal are configured for creating a superposed high frequency signal for the receiver coil, each of the transmission coils being configured for providing a respective component of the superposed high frequency signal, wherein the phase shifter adjusts the phase shift in order to adapt a superposed electromagnetic field of the superposed signal to an orientation of the receiver coil, and wherein a frequency of the first high frequency signal is equal to the frequency of the second high frequency signal.