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Method and apparatus for guiding an external needle to an implantable device

  • US 9,339,601 B2
  • Filed: 03/11/2011
  • Issued: 05/17/2016
  • Est. Priority Date: 03/25/2010
  • Status: Active Grant
First Claim
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1. A system for determining a location of a trackable instrument with a receiving coil array, comprising:

  • a trackable instrument;

    a tracking array associated with the trackable instrument, having;

    a plurality of tracking portions;

    wherein each tracking portion of the plurality of tracking portions is positioned at vertices of a geometric shape separately and spaced apart from each of the other tracking portions to form the tracking array;

    wherein the geometric shape is a tetrahedron and the plurality of tracking portions includes four tracking portions, wherein each tracking portion is spaced about eight millimeters to about 15 millimeters apart from each other tracking portion;

    wherein each tracking portion is operable to sense a field to determine position information and orientation information;

    an implantable medical device having a power source;

    a localizer having coils of conductive material and configured to emit an electromagnetic field when powered by the power source fixed within the implanted medical device operable to emit a field to be sensed by the tracking array; and

    a display separate from the trackable instrument and operable to display a location information of the trackable instrument based on the emitted field from the localizer that is sensed by the tracking array, wherein the location information includes a graphical display representing a port of the implantable medical device and a direction indicator relative to the port displayed as a plurality of rings;

    wherein the plurality of rings on the display illustrate detailed guidance information includingthree-dimension position and orientation of the trackable instrument.

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