Two-part medical tracking marker

Abstract

The invention relates to a medical tracking marker () for localizing or tracking an object () by means of a medical tracking system (), said marker comprising a first part () which is to be fixed on the object (), and a second part () which is to be connected to the first part (), wherein the first and second parts () comprise interconnecting elements () which are adapted to provide a positionally determined connection between the first part () and the second part () while the first part is located under a surgical drape () and the second part is located above said surgical drape (), with the drape () placed between the two parts (). The invention also relates to a method of referencing an object () using a medical navigation system, wherein a medical tracking marker such as has been described above is localized or tracked by means of a medical tracking system (), and wherein the object is registered by means of the first part () of the marker () in a preliminary referencing step, in particular for imaging purposes, which is later adapted to form a final referencing step for navigation using the second part () which has been placed on the first part in a positionally defined, pre-determined manner.