Being the method of producing the injection needle assembly of tune needle type, in the hub (1) the needle cannula of the metal make of the detail part of direct needle type (20) step and the hub which are installed in (1) the direct needle cannula (20) the step which locks and, way the 1st axis (X) from it can curve the portion of the needle cannula at least, the needle cannula (20) the method of including with the step which is bent.< Selective figure >Figure 6曲針型の注射針アセンブリを製造する方法であって、ハブ(1)に直針型の単一部品の金属製の針カニューレ(20)を装着するステップと、ハブ(1)に直針カニューレ(20)を固定するステップと、少なくとも針カニューレの一部が第1の軸(X)から反れるように針カニューレ(20)を曲げるステップとを含む方法。【選択図】図6