Locking nail and stereotaxic apparatus therefor

US7686818B2 · kind B2 · utility

Assignee

• Stryker Trauma GmbH · CH

Inventors

• Bernd Simon · Kiel, DE
• Rene Fullgraf · Achterwehr, DE

Key dates

• Filing date: Sep 21, 2004
• Grant date: Mar 30, 2010
• Expiry date: Apr 12, 2028

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2090/397
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A stereotaxic apparatus for a locking nail which has two oscillating circuits which are disposed along the longitudinal direction of the locking nail. The apparatus has a guide sleeve to place a drill and/or bone screw which, when the stereotaxic apparatus is in an oriented condition, points to a cross-bore in the locking nail. The guide sleeve has three or more oscillating circuits arranged in a first plane that are equidistant each from a first center located in the plane; three or more oscillating circuits are arranged in a second plane extending in parallel with said first plane that are equidistant each from a second center located in said second plane. The first and second planes are arranged towards each other such that a face normal to one of said planes extends through the first and second centers. A pair of oscillating circuits are arranged at a distance from a straight line extending through the centers and the interconnecting straight line of which, in the aligned condition with the locking nail, is substantially perpendicular to the longitudinal direction of the locking nail.