< Topic >Holding down the part to the smallest number, the injector where it pulls the injection needle securely and it is possible, cannot utilize in the repetition to be packed, is offered.SolutionsBe able to provide the annular regulation section in the toe of switch 20 inside, the annular regulation section at least two regulation blocks 23 and to have with two regulation person in charge stopping channels 25 at least, as for these regulation person in charge stopping channels 25 cutoff being done in these regulation blocks 23, form, the injection cylinder be able to attach to the toe of switch 20 inside 2 where the guide aspect is formed to one side of each regulation block 23 and the injection cylinder, two be able to provide person in charge stopping normal position tool 35 at least around that, be able to provide the guide slant face on one side of each person in charge stopping normal position tool 35, as for person in charge stopping normal position tool 35, regulation person in charge stoppingThe adapter movement possibly it is stored inside 3 which is stored respectively in the channel 25 and the injection cylinder, that toe of switch 50 includes, moving to the bottom edge of adapter, 3 pushing, the plunger 5 which it concatenates with the bottom edge of adapter 3 and.< Choice figure >Drawing 2【課題】部品を最小数に抑えても、注射針を確実に引き込むことができ、重複に利用できない注射器を提供する。【解決手段】内部の前端20に環状規制部が設けられ、環状規制部は少なくとも二つの規制ブロック23と少なくとも二つの規制係止溝25とを有し、これらの規制係止溝25はこれらの規制ブロック23にカットオフされて形成し、各規制ブロック23の一側にガイド面が形成されている注射筒2と、注射筒の内部の前端20に組み付けられ、その周囲に係止定位具35が少なくとも二つ設けられ、各係止定位具35の一側にガイド斜面が設けられ、係止定位具35は、規制係止溝25にそれぞれ収容されているアダプター3と、注射筒の内部に移動可能に収容され、その前端50は、アダプター3の底端に移動して押付けて、アダプター3の底端と連結する押子5と、を含む。【選択図】図2
