Abstract: The invention consists of a gas spring which can absorb movements perpendicular to its operating axis. To do that, it has a hollow cylindrical body (1) with an open end, a piston rod (2) located in the hollow cylindrical body (1) which can be moved therein and a sliding element (3) connected to the free end of the piston rod (2) and laterally displaceable with respect thereto. It also has a connection means (4) between the sliding element (3) and the piston rod (2) which comprises an internal part which is located inside the piston rod (2) and an external part (5) which projects out of the free end of the piston rod (2), the sliding element (3) being situated on the free end of the piston rod (2) and the sliding element (3) and the connection means (4) being configured so that the sliding element (3) is laterally displaceable with respect to the external part (5) of the connection means (4).