Spatially decoupled twin secondary coils for optimizing transcutaneous energy transfer (tet) power transfer characteristics

Abstract From the Canadian patent

An implantable device, such as an infuser device for bi-directional hydraulically controlling a medical artificial sphincter enhances power transfer characteristics to a secondary coil thereby allowing implantation to greater physical depths and/or enclosing the secondary coil within a housing of the infuser device. The enhanced power transfer is achieved with multiple coils that are longitudinally aligned and physical and electrical parallel to form the secondary loop of a transcutaneous energy transfer system (TET) instead of a single coil. It better optimizes the power transfer from a parallel tuned tank circuit primary coil to an implanted secondary series tuned tank circuit coil.