Portable electromagnetic navigation system

  • US 20080132909A1
  • Filed: 12/01/2006
  • Published: 06/05/2008
  • Est. Priority Date: 12/01/2006
  • Status: Active Grant
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First Claim
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1. A navigation system for use in an operating theatre to navigate a procedure relative to a patient, comprising:

  • a coil array having at least three coils operable to at least one of transmit a first field, receive a second field, or combinations thereof that is changed by at least one of a time differential, a time duplex, a frequency duplex, or combinations thereof;

    an instrument;

    a first tracking device associated with the instrument and operable with the coil array to at least one of transmit the second field of the array, receive the first field of the array, or combinations thereof;

    a coil array controller having;

    a digital amplifier; and

    a digital switch operable to switch a signal from the digital amplifier to each of the three coils according to the selected transmission type.

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