Fixation pin for fixing a reference system to bony structures

US5643268A · kind A · utility

Assignee

• BrainLAB Med. Computersysteme GmbH · DE

Inventors

• Stefan Vilsmeier · Munich, DE
• Stefan Lippstreu · Borgo San Lazzaro, DE
• Michael Bertram · Borgo San Lazzaro, DE

Key dates

• Filing date: Sep 11, 1995
• Grant date: Jul 1, 1997
• Expiry date: Sep 11, 2015

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/28
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present invention pertains to a fixation pin for fixing a reference system, especially a head ring for stereotactic treatment, to bony structures, which pin has a shaft made of plastic material with an outside thread, a coupling shoulder for a screwdriver and a point holder, and it has a point, which is held by the point holder. The point has a conical front end, in which case the point is made of a semiprecious stone material.