PROBLEM TO BE SOLVED: To provide a syringe not requiring severe dimensional accuracy and lowering the risk of contamination in use.SOLUTION: This syringe 1 includes: a barrel 2 a luer tapered part 7 a flange part 8 a protector 3 covering the outer periphery of the barrel 2 and including an engagement part 11 engaging with the flange part 8 at the rear end and an adapter 5. The protector 3 can store an injection needle 4 in the interior thereof. The protector 3 includes a projecting part 12 at the engagement part side of the inner peripheral surface. The adapter 5 includes a held part 26 and a needle base engagement part 25 on the outer peripheral surface of a drum part 24. The inside diameter of the drum part 24 is formed larger than the outside diameter of the luer tapered part 7. A needle base 19 mounted to the needle base engagement part 25 is mounted to the luer tapered part 7 and positioned and held at the front end of the barrel 2. When the protector 3 releases the flange part 8 and moves the barrel 2 to the rear of the protector 3, the held part 26 is held on the projecting part 12, and the needle base 19 is released from the luer tapered part 7 so that the injection needle 4 is stored together with the adapter 5 in the protector 3.COPYRIGHT: (C)2010,JPO&INPIT【課題】厳しい寸法精度が不要であり、使用時に汚染の危険性が低いシリンジを提供する。【解決手段】バレル2とルアーテーパ部7とフランジ部8とバレル2の外周を覆い後端部にフランジ部8と係合する係合部11を備えるプロテクタ3とアダプタ5とを備え、プロテクタ3は内部に注射針4を収納できるシリンジ1において、プロテクタ3は内周面の係合部側に突出部12を備え、アダプタ5は胴部24の外周面に被保持部26と針基係合部25とを備え、胴部24の内径がルアーテーパ部7の外径より大きく形成され、針基係合部25に装着された針基19がバレル2のルアーテーパ部7に装着されてバレル2の前端部に位置決め保持され、プロテクタ3はフランジ部8を離脱させ、プロテクタ3の後方にバレル2を移動させたときに、被保持部26が突出部12に保持され、針基19がルアーテーパ部7から離脱して注射針4がアダプタ5と共にプロテクタ3内に収納される。【選択図】図1
