Cyberonics, Inc.

Jianxiang Shen

Eric Y Chow

David L Thompson

Saadat Hussain

Anthony W Cowley

James L Flesher

Jared Brandon Floyd

A case for an implantable medical device includes a metal case portion, having an inside and an outside, configured to attach to at least one other case portion to define a biocompatible case for the implantable medical device. The metal case portion has a plurality of grooves disposed on at least one of the inside and the outside, the grooves being oriented substantially perpendicular to an expected direction of eddy currents produced by an inductive recharging coil in proximity thereto.

Inductively rechargeable implantable device with reduced eddy currents

Apparatus and methods for charging a power cell in an implantable medical device ('IMD') are disclosed herein. In one embodiment, a method includes providing an electrical pulse to an inductor external to the IMD. A frequency of an oscillation signal induced in the inductor by the current pulse is measured. The inductor is driven with an oscillating signal having a frequency based on the measured frequency of the oscillation signal. The power cell is charged using current induced in the IMD by the driving of the inductor.

System and method for charging a power cell in an implantable medical device

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Houston, TX, United States of America

Jianxiang Shen