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Split coil for uniform magnetic field generation from an external charger for an implantable medical device

  • US 10,342,984 B2
  • Filed: 06/07/2017
  • Issued: 07/09/2019
  • Est. Priority Date: 06/15/2016
  • Status: Active Grant
First Claim
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1. An external charger for wirelessly providing power to an implantable medical device (IMD), comprising:

  • a circuit board having a plane; and

    a charging coil configured to produce a magnetic field to provide power to the IMD, wherein the charging coil comprises a first mechanically-wound coil portion on a first side of the circuit board and a second mechanically-wound coil portion on a second side of the circuit board, wherein the first coil portion and the second coil portion are connected in series, and wherein the first and second coil portions are formed in planes parallel to the plane of the circuit board.

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