Kupplungsvorrichtung zur Verbindung einer Stange mit einem Knochenverankerungselement

Details

Veröffentlichungs-Nr.

EP4763111

Anmeldetag

9. Dezember 2025

Veröffentlichung

24. Juni 2026

Rechtsraum

EP

IPC

A61B17/70

Abstract

A coupling device for coupling a rod (100) to a bone anchoring element (1) having a head (3) and a shank (2) comprises a receiving part (5) having a first end (5a), a second end (5b) and a passage (51) extending from the first end (5a) to the second end (5b), a recess (54) for receiving the rod (100), the recess (54) extending from the first end (5a) towards the second end (5b) and forming two free legs (55) and an accommodation space (53) for accommodating the head (3) of the bone anchoring element (1), the accommodation space (53) having an opening (52) at the second end (5b), a pressure element (6) configured to be located at least partially in the accommodation space (53) and comprising a first portion (61) comprising a rod support surface (62a) and a second portion (66) having a hollow interior (67) with an opening defining a flexible portion configured to accommodate and clamp the head (3), wherein the receiving part (5) comprises a first securing portion (58a) and the pressure element (6) comprises a second securing portion (63a) configured to engage the first securing portion (58a), wherein the pressure element (6) is insertable into the receiving part (5) from the second end (5b) in a first rotational orientation relative to the receiving part (5) in which the first securing portion and the second securing portion are out of engagement and wherein the pressure element (6) is rotatable in the receiving part (5) to assume a second rotational orientation with respect to the receiving part (5) in which the first securing portion (58a) and the second securing portion (63a) are engaged to prevent the pressure element (6) from moving towards the first end (5a).

Anmelder

Firma

Biedermann Technologies GmbH & Co. KG

Land

🇩🇪 Deutschland