| 摘要 |
A medical instrument for registering or referencing a body or body part in a medical navigation system includes a body, a tracking device trackable by the navigation system, an instrument tip having a touch sensor, and an electromagnetic radiation source for producing a light beam. The touch sensor detects contact between the tip and an object, and via the tracking device, the location of the tip can be ascertained at the moment contact between the tip and the object is made. Additionally, the light beam can be projected onto a surface of the body or body part to create a plurality of markers that also are trackable by the navigation system.
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