Back to results
US 8,543,189 B2Granted
Method and apparatus for electromagnetic navigation of a magnetic stimulation probe
AssigneeMedtronic Navigation, Inc.
InventorsYvan Paitel, Steven L. Hartmann, Lilac Muller
Life of this patent
Estimating the term…
Abstract
A system and method is disclosed that can be used to track and navigate an instrument relative to a patient. The system can include an electromagnetic tracking system to track an electromagnetic stimulation probe, such as a transcranial magnetic stimulation probe. The system can, according to various embodiments, provide a tracking device on the probe, track the coil of the probe, provide a field relative to the probe, and determine the position of the patient based upon the field produced by the probe.
Claims40
A system to navigate a procedure for a patient, comprising:
- an electromagnetic tracking system including an electromagnetic localizer system having at least a first conductive coil to be configured with a first set of parameters to generate a localization field;
- a magnetic stimulation probe configured to be external to the patient and having at least the first conductive coil that is configured to be switched to operate as the electromagnetic localizer system to generate the localization field with the first set of parameters and configured to produce a probe electromagnetic field having an electromagnetic focal region with a second set of parameters, wherein the probe electromagnetic field is configured to induce a current in a conductive material of the patient;
- and
- a processor system configured to determine the position of the electromagnetic focal region relative to the patient based at least in part on the localization field produced by the electromagnetic localizer system;
- wherein the probe electromagnetic field of the magnetic stimulation probe is operable to induce a current in a conductive material including inducing the therapeutic current to stimulate a selected portion of the patient at the electromagnetic focal region.
2 more elements
A system to navigate a procedure for a patient, comprising:
- an instrument having at least two coils of conductive material operable together to generate a focused field of electromagnetic energy having a focal region for stimulation within a region external to the instrument and from a position external to the patient;
- a controller operable to drive a current through each of the at least two coils, wherein a first coil of the at least two coils generates a first instrument field and a second coil of the at least two coils generates a second instrument field, wherein the first instrument field and the second instrument field interact to produce the focused field of electromagnetic energy having the focal region;
- an electromagnetic tracking system having a processor system and an electromagnetic localizer system that includes at least one coil of the first coil or the second coil, wherein the electromagnetic localizer system is configurable with a first set of parameters to generate a localizing field of electromagnetic energy that is different than the focused field of electromagnetic energy;
- a dynamic reference frame operable to be interconnected with the patient and including a tracking device operable to sense the localizing field of electromagnetic energy generated by at least one of the first coil or the second coil to allow determination of a position of the instrument relative to the tracking device anatomy with the processor system of the electromagnetic tracking system by determining the position of the tracking device of the dynamic reference frame within the localizing field of electromagnetic energy generated by at least one coil of the first coil or the second coil;
- and
- a display device operable to display an image data of the anatomy and an icon displayed on the display device illustrating the position where the focal region is located to induce a current.
3 more elements
A method to navigate a procedure for a patient, comprising:
- driving a magnetic stimulation probe to operate at least two coils in a first manner to generate a focal region of an electromagnetic field, the focal region being a predetermined distance from the magnetic stimulation probe;
- tracking a position of the magnetic stimulation probe by operating at least one coil of the at least two coils in a second manner different than the first manner with an electromagnetic tracking system including at least sensing or generating a localizing electromagnetic field;
- displaying obtained image data of the patient on a display device;
- displaying a position of the focal region based on the tracking the position of the magnetic stimulation probe including displaying an icon representing the position of the focal region superimposed on the displayed image data based upon the tracked position of the magnetic stimulation probe due to at least sensing or generating the localizing electromagnetic field and the focal region having the predetermined distance for the magnetic stimulation probe;
- determining a region of highest magnetic field strength produced by the magnetic stimulation probe as the position of the focal region;
- and
- wherein driving the magnetic stimulation probe in the first manner to generate the focal region includes driving a first coil of conductive material and driving a second coil of conductive material to generate a cooperative field that can be substantially precise and strong at the focal region, wherein the first coil and the second coil are formed as the magnetic stimulation probe.
4 more elements
A method to navigate a procedure for a patient, comprising:
- driving a magnetic stimulation probe to operate at least two coils in a first manner to generate a focal region of an electromagnetic field, the focal region being a predetermined distance from the magnetic stimulation probe;
- tracking a position of the magnetic stimulation probe by operating at least one coil of the at least two coils in a second manner different than the first manner with an electromagnetic tracking system including at least sensing or generating a localizing electromagnetic field;
- displaying obtained image data of the patient on a display device;
- displaying a position of the focal region based on the tracking the position of the magnetic stimulation probe including displaying an icon representing the position of the focal region superimposed on the displayed image data based upon the tracked position of the magnetic stimulation probe due to at least sensing or generating the localizing electromagnetic field and the focal region having the predetermined distance for the magnetic stimulation probe;
- determining a region of highest magnetic field strength produced by the magnetic stimulation probe as the position of the focal region;
- wherein operating the magnetic stimulation probe in a first manner to generate a focal region of an electromagnetic field includes driving a current through at least two coils of conductive material at a first frequency;
- and
- wherein tracking the position of the magnetic stimulation probe when operated in the second manner different than the first manner includes at least one of driving a current through at least one of the at least two coils of conductive material at a second frequency or sensing a localizing field with at least one of the two coils of conductive material at the second frequency, wherein the first frequency is higher than the second frequency.
5 more elements
A system to navigate a procedure for a patient, comprising:
- an electromagnetic tracking system including an electromagnetic localizer system having at least a first conductive coil to be configured in a first manner to generate a localization field;
- a magnetic stimulation probe configured to be external to the patient and having at least a second conductive coil that is configured to be switched to:
- i) operate as at least one of sense the localization field or operate as at least the first coil of the electromagnetic localizer system to generate the localization field in the first manner, and
- ii) produce a probe electromagnetic field when operated in a second manner different than the first manner, wherein the probe electromagnetic field is configured to induce a current in a conductive material of the patient at a focal region;
- and
- a processor system configured to determine the position of the focal region relative to the patient based at least in part on the localization field produced by the electromagnetic localizer system with the at least the first conductive coil or sensed with the at least the first conductive coil;
- wherein the probe electromagnetic field of the magnetic stimulation probe is operable to induce the current in the conductive material including inducing a therapeutic current to stimulate a selected portion of the patient at the focal region.
4 more elements
Dependencies are inferred from the claim text.