The present invention concerns a syringe assembly (1) comprising: - a hollow tubular syringe body (4), having a proximal end (16) and a distal end (18), - a plunger rod (10), axially movable in the syringe body (4) between an initial position and a final position. The syringe assembly (1) comprises: - a support (12) transversally stiff for supporting the plunger rod (10), the support (12) having a distal end and a proximal end (82) respectively transversally fixed to the syringe body (4) and to the plunger rod (10), the proximal end (82) of the support (12) being movable with respect to the syringe body (4).本發明係關於一種注射器組件(1)，其包含：- 中空管狀注射器本體(4)，其具有近端(16)及遠端(18)，- 柱塞桿(10)，其可在該注射器本體(4)中在初始位置與最終位置之間軸向移動。該注射器組件(1)包含：- 支撐件(12)，其在橫向上為剛性的，用於支撐該柱塞桿(10)，該支撐件(12)具有分別橫向地固定至該注射器本體(4)及該柱塞桿(10)之遠端及近端(82)，該支撐件(12)之該近端(82)可相對於該注射器本體(4)而移動。
