| 摘要 |
The invention relates to a catheter system comprising a first, outer catheter ( 1 ) and a second catheter element contained in it, which can particularly be a guide wire ( 2 ). A respective active localizer ( 4, 5 ) is placed on the first and on the second catheter element ( 1, 2 ), for example sensors of a magnetic tracking system. The first catheter element ( 1 ) preferably has a fixing device ( 3 ), by means of which it can be fixed relative to the vascular system ( 7 ). If the guide wire ( 2 ) is, for example, to be navigated through a stenosis ( 6 ), the position of its localizer ( 5 ) relative to the localizer ( 4 ) is measured on the catheter element at rest ( 1 ), so that its position relative to the vessel ( 7 ) is known. Since interference factors such as organ movement balance each other during the measurement of the relative position of the localizers ( 4, 5 ), the navigation can be carried out with very high accuracy.
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