The present disclosure is a needle device (1) for a drug delivery device, the needle device (1) comprising a distal needle tip (2) and a proximal needle tip (3), the distal needle tip (2). Is held in the distal needle holder (4), the proximal needle tip (3) is held in the proximal needle holder (5), and the distal needle tip (2) and the proximal needle tip (3) are fluid channels. The fluid channel (6) is in fluid communication with each other via (6), the distal end of the distal needle tip (3) relative to the proximal needle tip (3) between the compacted state (S1) and the extended state (S2). The length of the needle device (1) applied to allow axial movement of 2) and extending over the distal needle tip (2) and the proximal needle tip (3) in the extended state (S2) is compact ( The needle device is larger than S1).本開示は、薬物送達デバイス用の針装置(1)であって、針装置(1)は、遠位針先端(2)および近位針先端(3)を含み、遠位針先端(2)は遠位針ホルダ(4)に保持され、近位針先端(3)は近位針ホルダ(5)に保持され、遠位針先端(2)および近位針先端(3)は、流体チャネル(6)を介して互いに流体連通しており、流体チャネル(6)は、コンパクト状態(S1)と伸長状態(S2)との間で近位針先端(3)に対して遠位針先端(2)の軸方向運動を可能にするように適用され、伸長状態(S2)での遠位針先端(2)および近位針先端(3)にわたる針装置(1)の長さはコンパクト状態(S1)よりも大きい、針装置に関する。