The authors present a computer-aided design model for implantable telemetry systems. This model can be utilized to predict optimum telemetry coil geometries for best performance of the system over a given telemetry range. The model is based on a generalized formulation of the electromagnetic field coupling between an external instrument coil (telemetry coil) and a second coil in an implanted tissue stimulator. The coil design obtained from the model presented has been correlated with the empirical coil design and the system performance verified with lab measurements. These results are presented in detail.
