Surgical tool for tensioning a flexible member

A surgical tool for tensioning a flexible member of a vertebral device having a body, said flexible member having at least one end portion to which tension is applied, said tool comprising:

• a longitudinal member having a longitudinal axis, a first end provided with an element for securing in rotation the at least one end portion of said flexible member with said first end of the longitudinal member, and a second end provided with a handling element;
• and
• a guiding structure comprising a first end adapted to be applied against said body of the vertebral device, and at least one guiding member for guiding in rotation with respect to said guiding member said longitudinal member about said longitudinal axis, said guiding structure maintaining the longitudinal axis of the longitudinal member with respect to said body, whereby the rotation of said longitudinal member with said handling element and with respect to the guiding member produces the tensioning of said flexible member in a direction perpendicular to the longitudinal axis;
• wherein the first end of said longitudinal member is designed for rolling said at least one end portion of the flexible member when said longitudinal member is rotated.