Patent ID: 7988714

Claim:
A bone screw with a shaft defining a longitudinal axis and a head adapted to be brought into engagement with a bone screw receiving means of a bone plate for the releasable connection of the bone screw to the bone plate, wherein a securing element is provided for securing a connection between the bone screw and the bone plate, wherein the bone screw is adapted to be brought from a position of engagement, the bone screw being held on the bone plate in said position, into a release position, the bone screw being releasable from the bone plate in said release position, wherein the securing element is adapted to be brought from a non-securing position, the bone screw being adapted to be brought into the release position in said non-securing position, into a securing position for securing the connection between the bone screw and the bone plate, the bone screw taking up the position of engagement in said securing position, wherein the securing element is supported on the bone screw so as to be movable, the bone screw further comprising at least one holding element, the at least one holding element exerting a biasing force on the securing element in the direction of the longitudinal axis to hold the securing element in the securing position, wherein the securing element is held in the securing position in a basic position of the bone screw, with no external forces acting on the bone screw in said basic position, wherein the at least one holding element is supported on at least one of the shaft and on the securing element, wherein the at least one holding element is an elastic element, and wherein the at least one holding element is a helical spring or a stack of plate springs.