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1. (WO2016055958) INSTRUMENT THAT CAN BE USED WHEN FITTING A SHOULDER PROSTHESIS OR A PROSTHETIC ELEMENT ON A HUMERUS

Pub. No.:    WO/2016/055958    International Application No.:    PCT/IB2015/057689
Publication Date: Fri Apr 15 01:59:59 CEST 2016 International Filing Date: Fri Oct 09 01:59:59 CEST 2015
IPC: A61B 17/17
A61B 17/00
Applicants: 3S ORTHO
Inventors: DUPORT, Marc
Title: INSTRUMENT THAT CAN BE USED WHEN FITTING A SHOULDER PROSTHESIS OR A PROSTHETIC ELEMENT ON A HUMERUS
Abstract:
This instrument (1) comprises a positioning component (2), for positioning the instrument (1) in relation to the head (101) of the humerus, and a guide block (3) for bone pins (51), said positioning component (2) and guide block (3) being connected to each other pivotably; the positioning component (2) includes a curved branch (4) extending over an arc; the guide block (3) comprises a pivotable connection means (7), allowing this positioning component (2) and this block to be joined together, and comprises two pin-guiding conduits (16) that are able to receive bone pins (51) with a tailored fit. According to the invention, the arc over which said branch (4) extends is an arc of a circle of the order of 180°, and this curved branch (4) has a first end forming a positioning lug (5) which protrudes radially in the direction of the other end of this curved branch, and a second end forming a means (6) for pivotable connection to said block (3), this connection means (6) extending radially with respect to the curved branch (4), in such a way that the pivoting that it permits takes place along a pivot axis coinciding with the diametric axis of the curved branch (4), that is to say the axis going from one end of this branch to the other; the pivotable connection means (7) that the guide block (3) comprises is a connection means matching that of the positioning component (2), and said pin-guiding conduits (16) are parallel to said pivot axis.