Method for production of bone plates, in particular of plates for vertebral osteosynthesis

Method for producing bone plates, in particular plates for vertebral osteosynthesis, characterized in that it comprises the following steps:

• a) using a sheet (1) of titanium or of titanium alloy having a thickness of 1.7 to 2 mm;
• b) determining the direction of the grain flow of this sheet (1);
• c) cutting out portions (3) of sheet (1), parallel to the direction of the grain flow of this sheet (1), sized so as to make it possible to obtain a plurality of bone plates, these portions (3) of sheet in particular being in the form of strips;
• d) performing, in any order, operations d1, d2 and d3 below:
• d1) shaping the portions (3) of sheet, or plates or blanks (4) obtained by operation d2, in particular by rolling or cold bending, in order to form a curvature of the portions (3) of sheet or of the plates or blanks (4) in the transverse direction and/or the longitudinal direction, in order to obtain one or several curvatures suited to the shape of the vertebrae and/or the lordosis of the vertebrae for which the plates being manufactured are intended;
• d2) cutting out, in each portion (3) of sheet, bone plates or bone plate blanks (4), such that a longitudinal direction of these plates or blanks (4) is parallel to the direction of the grain flow of the sheet;
• d3) piercing and, if necessary, cutting out or machining portions (3) of sheet, or plates or blanks (4) obtained by operation d2;
• e) finishing the plates or bone plate blanks (4).