Locking screw length measurement

US9855104B2 · kind B2 · utility

Assignee

• Stryker European Holdings, LLC · US

Inventors

• Arno Blau · Staufen im Breisgau, DE
• Bernd Simon · Kiel, DE
• Nils Reimers · Kiel, DE

Key dates

• Filing date: May 23, 2012
• Grant date: Jan 2, 2018
• Expiry date: Oct 23, 2033

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2090/061
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method and device is provided for identifying a length of a bone screw to be inserted through a bore drilled in a predetermined drilling direction at a predetermined position through a bone. The predetermined drilling direction and the predetermined position is identified in an X-ray projection image of the bone, and the identified direction and position is transferred to a corresponding model of the imaged bone, wherein the bone model is a 3D model. The length of the bone screw is finally determined at the bone model based on the transferred direction and position.