PROBLEM TO BE SOLVED: To provide a novel and useful injection needle configured to design a size of a needle hub without being restricted by a size of a syringe connection part.SOLUTION: A hub includes: a needle hub 11 having a through-hole in which a needle tube is inserted, formed therein and a cylindrical housing in which both axial ends thereof are opened and the needle hub is fittedly stored inside the axial one end side, where the needle hub and the cylindrical housing are defined as separate-body injection moldings such that the needle hub 11 can be designed into a large size. The housing and the needle hub 11 are joined to each other in a fitting gap 47 formed therebetween, by an adhesive or weld inserted from a needle tip side. A needle tube shield part has a box lid shape, and includes a tubular guide part 69 at a back side of the top part, and an end edge surface 71 comes into contact with the needle hub 11 and a lateral part 75 annularly holds and comes into contact with the housing. Accordingly, even when receiving pressure of the pharmaceutical, the needle hub 11 does not move.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2018,JPO&INPIT【課題】針基のサイズをシリンジ接続部のサイズに制限されずに設計できる、新規且つ有用な注射針を提供する。【解決手段】ハブは、針管の挿通する貫通孔が形成された針基11と、軸方向両端側が開口し、軸方向一端側の内部に針基を嵌合収容する筒状ハウジングとを別体の射出成形品とすることで、針基11を大きく設計できる。ハウジングと針基11はその間に形成される嵌合隙間47に針先側から侵入した接着剤もしくは溶着により接合されている。針管シールド部は、箱蓋状で、その天部裏側には、管状ガイド部69が設けられており、その端縁面71が針基11に当接すると共に、側部75がハウジングを環状に抱持当接する。従って、薬液の圧力を受けても、針基11が動くことはない。【選択図】図5
