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Method and apparatus for position optimization of a field generator

A generator, electromagnetic field technology, applied in the field of medical systems, which can solve problems such as aggravating alignment problems, electromagnetic field distortion, and inability to ensure marking

Inactive Publication Date: 2010-06-16
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the fiducial marker is used as a reference, there is no guarantee that the marker falls in the "sweet spot" of the EMF tracking system instrument
[0007] Additionally, adjacent medical devices can cause electromagnetic field distortions that can exacerbate alignment issues

Method used

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  • Method and apparatus for position optimization of a field generator
  • Method and apparatus for position optimization of a field generator
  • Method and apparatus for position optimization of a field generator

Examples

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Embodiment Construction

[0014] In the drawings, like reference numerals denote like elements. Furthermore, it is pointed out that the drawings may not be drawn to scale.

[0015] Embodiments of the present disclosure provide a method for continuously confirming the relationship between field generators and workspace / probe locations in electromagnetic tracking system applications. In one embodiment, the laser beam originating from the field generator is positioned and oriented so as to pass through the centroid of the "sweet spot". Thus, having a laser beam positioned and oriented to penetrate the centroid of the "sweet spot" will instantly indicate to the system user the angular alignment of the field generators with the workspace.

[0016] figure 2 is a simplified schematic diagram illustrating an electromagnetic tracking system 50 characterized by position optimization in accordance with an embodiment of the disclosure and methods thereof. The electromagnetic tracking system 50 includes an elec...

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Abstract

An electro-magnetic tracking system (50,110) includes a system controller (58) having a sensor interface, a generator (52), and a positioning and angular orientation configuration (62,114). The generator is responsive to the system controller for generating an electro-magnetic field, the electro-magnetic field including a portion thereof characterized as a tracking volume (54) of highest accuracy.The highest accuracy corresponds to an accuracy of the sensor interface and system controller to detect a sensor (56) physically located within the tracking volume versus a lesser accuracy of the sensor interface and system controller to detect the sensor if the sensor is located outside of the tracking volume. The positioning and angular orientation configuration is coupled to the electro-magnetic field generator for visibly optimizing one or both of (i) a positioning and (ii) an angular orientation of the electro-magnetic field generator such that the tracking volume lies within a centroidof a physical volume of interest (66), thereby enabling a detection of a sensor within the tracking volume with a highest accuracy.

Description

technical field [0001] Embodiments of the present invention relate generally to medical systems, and more particularly to methods and apparatus for field generator location optimization. Background technique [0002] Electromagnetic tracking systems typically consist of a field generator, one or several small sensor coils, and signal processing hardware and software. The field generator contains several transmitting coils which radiate an electromagnetic field through a tracking volume. When used in medical applications, the sensor coil is placed within a medical device, such as a needle or catheter, and traverses the volume of interest. As long as the tracking volume substantially coincides with the volume of interest, position information of the tracked medical device can be confirmed and processed using, for example, signal processing hardware and software. An example of an electromagnetic tracking system is Aurora, commercially available from NDI of Waterloo, Ontario, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/06
CPCA61B5/06G01V3/081G01V8/10A61B5/062
Inventor D·斯坦登J·克吕克尔
Owner KONINK PHILIPS ELECTRONICS NV
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