Surgical instrument and osteosynthesis device

US7922731B2 · kind B2 · utility

Assignee

• Aesculap AG · DE

Inventors

• Joerg Schumacher · Teltow, DE
• Brian E. Dalton · Erie, US
• Ulrich Hahn · Dortmund, DE

Key dates

• Filing date: Dec 22, 2006
• Grant date: Apr 12, 2011
• Expiry date: Jul 16, 2029

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2090/037
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A surgical instrument for applying and fixing a fixation screw to a threaded section of a head of a bone anchorage element comprises a distal end and a proximal end, a first tool member and a second tool member. The first tool member is arranged at the distal end and adapted for engaging the threaded section of the bone anchorage element head. The second tool member is adapted for engaging a tool-engaging member of the fixation screw. The instrument is constructed such that in a working position of the instrument the second tool member is supported on the instrument in a torque proof manner relative to the first tool member about a longitudinal axis and is movable parallel to the longitudinal axis relative to the first tool member. Moreover, an osteosynthesis device comprising at least two bone anchorage elements and at least one connection member is suggested. Further, a method for fixing an osteosynthesis device on two vertebrae of a spinal column in a minimal invasive manner is proposed.