Knochenverankerungsvorrichtung zur Kopplung einer Stange an ein Knochenverankerungselement

Details

Veröffentlichungs-Nr.

EP4763110

Anmeldetag

23. Dezember 2024

Veröffentlichung

24. Juni 2026

Rechtsraum

EP

IPC

A61B17/70

Abstract

A bone anchoring device comprises a bone anchoring element (1) having a shank (2) for anchoring to bone and a head (3), and a coupling device for coupling a rod (100) to the bone anchoring element. The coupling device comprises a receiving part (5) having a first end (5a), an opposite second end (5b), and a passage (51) extending between the first end and the second end, the passage defining a central axis (C). The receiving part comprises an accommodation space (53) at the second end for accommodating the head of the bone anchoring element; a pressure element (6) configured to be arranged in the passage of the receiving part and to exert pressure onto the head received within the accommodation space to clamp the head at a particular angular position relative to the receiving part. The pressure element comprises at least one opening (66) that provides access to the inserted head from a direction transverse to the central axis; and at least one restraining element (7) configured to be arranged in the passage of the receiving part. The restraining element is movable relative to the pressure element in an axial direction between a first position and a second position, wherein in the second position the restraining element contacts the inserted head through the opening of the pressure element to restrict pivoting of the inserted head relative to the receiving part to a single plane.

Anmelder

Firma

Biedermann Technologies GmbH & Co. KG

Land

🇩🇪 Deutschland