Kupplungsvorrichtung zur Verbindung einer Stange mit einem Knochenverankerungselement

Details

Veröffentlichungs-Nr.

EP4744603

Anmeldetag

18. November 2024

Veröffentlichung

20. Mai 2026

Rechtsraum

EP

IPC

A61B17/70, // A61B90/00(BIEDERMANN LUTZ et al.)

Abstract

A coupling device for coupling a rod (100) to a bone anchoring element (1) having a head (3) and a shank (2), the coupling device including a receiving part (5) having a first end (5a), a second end (5b), a central axis (C) extending between the first end (5a) and the second end (5b) and a passage (51) extending from the first end (5a) to the second end (5b); the receiving part (5) further including a rod receiving portion (9) having a recess (12) defining a channel for receiving the rod (100), the recess extending from the first end (5a) towards the second end (5b) and forming two free legs (12a, 12b) and having a bottom (12c); and a head receiving portion (22) open to the second end (5b) and comprising a seat portion (25) for pivotably receiving the head (3) of the bone anchoring element (1), the head receiving portion being flexible for inserting and clamping the head (3); and a locking ring (6) configured to be arranged around the head receiving portion (22), wherein, when the locking ring (6) is around the head receiving portion (22), the locking ring (6) can assume a locking position where the locking ring (6) exerts a force on the head receiving portion (22) to lock an inserted head (3); and wherein the passage (51) comprises a widening section (26) that widens from the seat portion (25) towards the bottom (12c) of the recess (12).

Anmelder

Firma

Biedermann Technologies GmbH & Co. KG

Land

🇩🇪 Deutschland