Pedicle screw system and spinal stabilization system

US9795417B2 · kind B2 · utility

Assignee

• Aesculap AG · DE

Inventors

• Jens Beger · Tuttlingen, DE
• Claudia Stoerk · Tuttlingen, DE
• Sven Krüger · Würzburg, DE

Key dates

• Filing date: Nov 23, 2015
• Grant date: Oct 24, 2017
• Expiry date: Jan 5, 2036

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B17/7077
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A pedicle screw system, including a pedicle screw having a screw shaft with an external thread and having a screw head supported on the screw shaft in a ball-and-socket joint relationship. The screw head includes a connecting element receptacle for a connecting element of a spinal stabilization system. The pedicle screw system further includes: a bone alignment apparatus and a coupling device for at least one of force-locking coupling and form-locking coupling of the bone alignment apparatus and the pedicle screw in an alignment position in which a mobility of the screw head and the screw shaft is reduced from three degrees of freedom of movement in rotation of the screw head supported on the screw shaft in a ball-and-socket joint relationship therewith by at least one degree of freedom of rotation.