Optical tracking device with optically distinguishable lines

US11992272B2 · kind B2 · utility

Assignee

• Stryker European Operations Limited · IE

Inventors

• Gerd Ulrich Gamm · Freiburg (Elbe), DE
• Emeric Umbdenstock · Freiburg (Elbe), DE
• Reinhold Zimmermann · Freiburg (Elbe), DE
• Fabian Riegelsberger · Umkirch, DE
• Florian Herrmann · Maulmacher, DE
• Jochen Breisacher · Teningen, DE

Key dates

• Filing date: Jan 17, 2020
• Grant date: May 28, 2024
• Expiry date: Jun 30, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/001
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An optical tracking device, a surgical navigation system and a surgical navigation method are disclosed. The optical tracking device comprises a body having at least two optically distinguishable lines, wherein at least one of the lines is an edge of the body. The lines are configured to be detected by an optical detection system simultaneously. They have a fixed spatial relationship between each other. The method comprises providing the optical tracking device, acquiring data describing the fixed spatial relationship, detecting the lines and determining the spatial position and/or orientation of the optical tracking device based on the detected lines and the fixed spatial relationship.