Kopplungsvorrichtung zur Kopplung einer Stange mit einem Knochenanker

Details

Veröffentlichungs-Nr.

EP3831322

Aktenzeichen

EP19214198

Anmeldetag

6. Dezember 2019

Veröffentlichung

19. März 2025

Erteilung

19. März 2025

Rechtsraum

EP

IPC

A61B17/70

Abstract

A coupling device for coupling a rod to a bone anchor comprises a receiving part having a channel for receiving a rod and having a passage defining a central axis and an accommodation space for a head of the bone anchor. The receiving part includes an outer surface with an engagement structure configured to be engaged by an instrument and a pressure member configured to be arranged at least partially in the accommodation space. The pressure member has a flexible portion defining a hollow interior to accommodate and clamp the head therein and an outer surface with an engagement structure configured to be engaged by the instrument. In the receiving part, the pressure member can assume a first position in which the pressure member engages an inner wall portion of the passage such that the flexible portion is compressed to clamp or lock an inserted head with a first locking force and a second position in which an inserted head is clamped or locked with a second locking force smaller than the first locking force or is freely pivotable and wherein the pressure member is movable from the first position towards the second position by engagement with the instrument.

Anmelder

Firma

Biedermann Technologies GmbH & Co. KG

Land

🇩🇪 Deutschland

Fachgebiete