Patent ID: 9649493
Date: 2017-05-16
CPC Classifications: A61B,A61F,A61N,F04C

Claim:
1. An implant unit configured for implantation into a body of a subject, comprising: an antenna configured to receive a signal; at least one pair of modulation electrodes configured to be implanted into the body of the subject in the vicinity of at least one nerve to be modulated, the at least one pair of modulation electrodes being configured to receive an applied electric signal in response to the signal received by the antenna and generate an electrical field to modulate the at least one nerve from a position where the at least one pair of modulation electrodes are spaced apart from the at least one nerve; a non-linear circuit including a harmonics modifier circuit configured to modify at least the even-th order harmonics in an oscillatory behavior of the non-linear circuit; and a processor configured to determine a coupling between the antenna and another antenna external to the implant unit based on the non-linear behavior of the non-linear circuit.