Threaded rod and dosing device for an injection device

The invention relates to for injecting device (1) screw rod (4), the screw rod (4) with the thread (4b on the screw rod (4) is side, 4c and 4d), the thread (4b, 4c and 4d) at least partially is firmly element and tooth part (4b); The invention further relates for injecting device (1), wherein the metering device of rotation limiting, wherein the rotation limiting to form at least one (6f) and/or the tooth part (1j and 3j) make the screw rod (4) can be along direction rotating and a prevented to rotates along the reverse direction; at least a lock (6f) and/or the tooth part (1j and 3j) can with the thread combined motion, the thread provided with the screw rod (4) tooth part (4b) and/or the screw rod (4) firmly element (4c); The other invention further relates at least meshing surface (6f) and/or the tooth part or the brake (1j and 3j the injection device, wherein at least one meshing surface (6f) and/or the tooth part or the brake (1j and 3j) can with the screw rod (4) thread (4b) is tooth part or with the screw rod (4) lock (4c) combined motion, is covered with the screw rod (4) is opposite to the injection device (1) along direction rotating, and a prevented to rotates along the reverse direction.