Implantable neural interface

Abstract

A neural interface arrangement has multiple probes for subdural implantation into or onto a human brain. Each probe has at least one sensing electrode, a coil for receiving power via inductive coupling, signal processing circuitry coupled to the electrode(s), and a transmitter for wirelessly transmitting data signals arising from the electrode(s). An array of coils is implanted above the dura beneath the skull, for inductively coupling with the coil of each probe, and for transmitting power to the probes. A primary coil is connected to the coil array, for inductively coupling with an external transmitter device, and for receiving power from the external transmitter device. In use, the primary coil is operable to receive power from the external transmitter device by inductive coupling and to cause the coil array to transmit power to the probes by inductive coupling, and the probes wirelessly transmit data signals arising from the electrodes.