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System for excitation leadless miniature marker

  • US 6,838,990 B2
  • Filed: 01/11/2002
  • Issued: 01/04/2005
  • Est. Priority Date: 12/20/2001
  • Status: Expired due to Term
First Claim
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1. A system for generating an excitation field for excitation of a leadless marker assembly in or on a body, comprising:

  • an energy storage device;

    a source coil configured to deliver a magnetic excitation signal waveform to the leadless marker assembly; and

    a switching network coupled to the energy storage device and the source coil, wherein the switching network is configured to;

    (a) direct electrical current through the source coil;

    (b) switch between a first on position and a second on position; and

    (c) transfer stored energy from the energy storage device to the source coil and transfer energy from the source coil back to the energy storage device.

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