Patent ID: 11888325
Assignee: MEDTRONIC, INC.
Field: Medical technology (Instruments)
Classification: CPC H  A | IPC A  H

Claim 0:
1. An implantable medical system comprising:
an implantable medical device comprising:
electronic components to deliver a therapy to or monitor a parameter of a patient, the electronic components coupled to a rechargeable power source; and
a recharge system operably coupled to the rechargeable power source, the recharge system including a secondary coil to receive power via an inductive power transfer; and

an external charger comprising:
a housing forming an internal compartment;
recharger electronic components disposed on a printed circuit board assembly in the internal compartment; and
a recharge coil assembly disposed within the internal compartment, the recharge coil assembly including:
a plastic bobbin:
a recharge coil configured to output power to the secondary coil via the inductive power transfer, wherein the recharge coil is planar and wound around the plastic bobbin; and
a planar flux guide having a planar ferrite sheet, the ferrite sheet located between the recharge coil and the printed circuit board assembly and the ferrite sheet is disposed alongside the recharge coil and the plastic bobbin.