Spinal column implant connection device

A connecting device for connecting an end region of an already implanted first spinal column support, in which a plurality of pedicle screws are respectively coupled at a head side to a first connecting rod by a respective coupling device in each case, comprising an already implanted or yet to be implanted spinal column support section which has a pedicle screw and which lengthens the first spinal column support, the connecting device comprising:

• a first fastening arrangement for fastening the connecting device to the first connecting rod;
• a coupling for a lengthening support section;
• a rigid bridge of an intermediate region between the first fastening arrangement and the coupling, said bridge laterally nestling against the coupling device of a closest of the pedicle screws of the already implanted first spinal column support on the connection side,
• wherein, for purposes of positioning the connecting device in relation to the first spinal column support, the first fastening arrangement is configured to be placeable radially and from above on an end region comprising the coupling device of the closest pedicle screw on the connection side;
• clamping means for clamping the first connecting rod to the first fastening arrangement;
• a resilient device that has a resilient arm with an inner face that forms one lateral boundary of a receiving region that receives the first connecting rod and is formed as a receiving channel, wherein another lateral boundary is formed on an opposite side of the receiving channel by a side structure of the first fastening arrangement, which acts as a fixed arm;
• and,
• a clamping screw arranged off-center and writable into a threaded bore that does not extend through to the receiving channel so that an axial direction of force application by the clamping screw is not central with respect to a middle of the connecting rod as seen in cross-section and counteracts spring action of the resilient device to a point of cancellation of the spring action and subsequent clamping of the connecting rod in the receiving channel.