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US 2003/0114749 A1Published application
Navigation system with respiration or EKG triggering to enhance the navigation precision
AssigneeSiemens Aktiengesellschaft
InventorNorbert Rahn
Life of this patent
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Abstract
A navigation system, particularly for navigation-guided biopsies or surgical interventions at moving body parts, particularly at the heart, wherein the position of a device (pointer, tool, surgical instrument or the like), provided with position sensors and displaced in the body, is mixed into a pre-operatively produced image dataset, has an EKG device or a respiration device for generating a trigger signal at the given phase of the pre-operative production of the image dataset. The coordinates of the position sensors are mixed into the pre-operative image only in the trigger time.
Claims8
A navigation system comprising:
- a medical appliance carrying at least one position sensor, said medical appliance being adapted for displacement relative to a moving body part of a subject in a medical procedure, said moving body part exhibiting a motion cycle;
- a data source from which an image dataset of said subject, produced prior to said medical procedure with said moving body part at a phase in said motion cycle, is supplied;
- a trigger device adapted for interaction with said moving body part during said medical procedure to generate a trigger signal at a trigger time coinciding with said phase at which said image dataset was produced;
- and
- a display device connected to said data source and said trigger device for receiving said image dataset and said trigger signal respectively therefrom, for displaying an image reconstructed from said image dataset with a representation of said medical appliance mixed therein, only at said trigger time, at a position dependent on said position sensor.
2 more elements
Dependencies are inferred from the claim text.