The integrated puncture needle adapter 1 is equipped with: a puncture needle 21 a needle hub 22 a tubular fixing part 31 for fixing the needle hub 22 a tubular puncture needle accommodating part 32 provided on a distal side of the tubular fixing part 31 and having therein an accommodating space 321 for accommodating the puncture needle 21 a second connecting part 34 provided on a distal side of the puncture needle accommodating part 32 and a separable part 35 which is formed between the tubular fixing part 31 and the puncture needle accommodating part 32. A part on the distal side of the separable part is separable from a part on the proximal side of the separable part. The puncture needle 21 is exposed when separated.
