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Detachable helical antenna for implantable medical device

  • US 8,972,021 B2
  • Filed: 03/03/2009
  • Issued: 03/03/2015
  • Est. Priority Date: 03/04/2008
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a detachable helical antenna comprising;

    a first threaded portion;

    an electrically insulated portion coupled to the first threaded portion; and

    a conductive portion at least partially contained within the electrically insulated portion;

    wherein the detachable helical antenna is configured to use the first threaded portion to threadably engage an implantable medical device assembly;

    wherein the implantable medical device assembly includes an implantable telemetry circuit configured to wirelessly transfer information electromagnetically using the detachable helical antenna;

    wherein the detachable helical antenna includes a tapered profile having a decreasing outer radius in a direction distal to the first threaded portion; and

    wherein the conductive portion includes two or more concentric helical portions including a tapered helical portion.

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