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1. (WO2018127596) BONE SCREW FOR OSTEOSYNTHESIS DEVICE, ASSEMBLY FORMED BY A SCREW, A CONNECTOR AND A NUT, AND KIT COMPRISING AT LEAST ONE SUCH ASSEMBLY

Pub. No.:    WO/2018/127596    International Application No.:    PCT/EP2018/050425
Publication Date: Fri Jul 13 01:59:59 CEST 2018 International Filing Date: Wed Jan 10 00:59:59 CET 2018
IPC: A61B 17/70
A61B 17/86
Applicants: KISCO INTERNATIONAL
Inventors: ROUSSOULY, Pierre
BERNARD, Marc
DO, Antoine
CHAROSKY, Sébastien
DEWALD, Christopher J.
GEHRCHEN, Poul Martin
SILVESTRE, Clément
Title: BONE SCREW FOR OSTEOSYNTHESIS DEVICE, ASSEMBLY FORMED BY A SCREW, A CONNECTOR AND A NUT, AND KIT COMPRISING AT LEAST ONE SUCH ASSEMBLY
Abstract:
The invention relates to a bone screw (1) comprising a lower bone anchor part provided with a thread (2), an upper part consisting of a pin (3) with a threaded outer surface for receiving a nut (12), and a seat (10) for receiving a connector (6) which is used to connect the screw (1) to a rod (20) of an osteosynthesis device and is held against the seat (10) by the nut (12), said bone screw being characterised in that said pin (3) is hollow and has an inner space (24) opening up at the upper end (25) thereof, the lower part of said inner space (24) ending with an impression (26) for receiving a screwdriver. The invention also relates to an assembly formed by such a bone screw (1), a connector (5) for connecting the screw (1) to a rod (20) of an osteosynthesis device, and a nut (12; 22) for holding the connector (5) against the seat (10) of the screw (1). The invention further relates to a kit comprising at least one such assembly and a screwdriver for engaging with said impression (26) ending the lower part of the inner space (24) of the pin (3).