A distribution assembly comprising both a syringe (100) having a body (102) provided with a tip (104) supporting a needle (A) having a bevel (P), and also a removable syringe needle protection device (10), said protection device (10) comprising a flexible cap (20) defining an inside cavity (26) defined by a side wall (28) and by a distal end wall (30), said end wall (30) being solid and, when in the protection position, receiving said bevel (P) of said needle (A) of a syringe (100) in airtight manner, said side wall (28) including an annular bead (70) provided with at least one slot (72) extending across said annular bead (70) in a longitudinal direction, said annular bead (70), when in the protection position, co-operating in airtight manner with said tip (104) of the syringe, said cavity (26) of said cap (20) being dimensioned in such a manner that when said protection device (10) is removed from said syringe (100), said cavity (26) is connected to the atmosphere via said at least one slot (72) before said bevel (P) of the needle (A) becomes connected to said cavity (26).分配組件包含一注射器(100)以及一可移除的注射器針保護裝置(10),注射器具有設置有一尖端(104)的一主體(102),尖端支撐具有斜面(P)的針(A),保護裝置(10)包含一可撓性帽(20),帽限定由側壁(28)和遠側端壁(30)定義的一內部空腔(26),端壁(30)為實體且當處於保護位置時,端壁(30)以氣密方式接收注射器(100)的針(A)的斜面(P),側壁(28)包含設置有至少一個狹槽(72)的一環形凸緣(70),狹槽在縱向方向上跨過環形凸緣延伸,當處於保護位置時,環形凸緣(70)與注射器的尖端(104)以氣密方式配合,帽(20)的空腔(26)的尺寸使得當保護裝置(10)從注射器(100)移除時,在針(A)的斜面(P)變為連接至空腔(26)之前,空腔(26)藉由至少一個狹槽(72)連接至大氣。20‧‧‧帽26‧‧‧空腔28‧‧‧側壁30‧‧‧端壁70‧‧‧凸緣72‧‧‧狹槽80‧‧‧外殼96‧‧‧邊緣104‧‧‧尖端P‧‧‧斜面A‧‧‧針
