MEDICAL DEVICE COMPRISING AN IMPLANTABLE COIL, AN EXTERNAL COIL AND A SIGNAL STRENGTH INDICATOR

摘要

It is critical in an inductively linked medical implant, such as a visual prosthesis or other neural stimulator, to adjust the external coil (4) to a position to maximize communication between the external coil and internal coil. Converting the signal strength to a signal easily discernible by a clinician, preferably an audible tone, facilitates the adjustment of the external coil to a preferred position.