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Focused power transfer for implantable medical device

  • US 10,355,512 B2
  • Filed: 07/18/2016
  • Issued: 07/16/2019
  • Est. Priority Date: 07/23/2015
  • Status: Active Grant
First Claim
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1. An implantable medical device, comprising:

  • a housing having a major length, the housing comprising;

    a first side comprising a first portion and a second portion, wherein the first portion defines a first window having an outer dimension, the first window comprising an electromagnetically transparent material, wherein the second portion comprises a conductive metal, and wherein the first window outer dimension is less than or equal to half of the housing major length;

    a receiving coil enclosed by the housing, the receiving coil extending adjacent to and aligned with the first window; and

    a rechargeable cell configured to be charged by the receiving coil when the receiving coil is exposed to a subwavelength focused electromagnetic field that traverses the first window with a focal pattern size that is less than the first window outer dimension.

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