The present invention provides a port that more reliably prevents the sealing plug from falling off the port body. A port according to the present invention includes a sealing plug through which a hollow needle can be pierced, a hollow port body in which the sealing plug is disposed, and a retaining member attached to the port body. A cylindrical sealed portion in which the sealing plug is sealed, and a fitted portion formed in the sealed portion, and the retaining member is the sealed portion in the sealed portion. A main body portion having a first surface facing the first end side, and a restricting portion formed on the first surface of the main body portion, the movement of the sealed portion in the sealing plug toward the second end side And a fitting portion that fits into the fitted portion of the port main body.本発明は、封止栓がポート本体から脱落することをより確実に防止するポートを提供する。本発明に係るポートは、中空針を刺通可能な封止栓と、該封止栓が内部に配置される中空のポート本体と、該ポート本体に取り付けられる抜止部材とを備え、ポート本体は、該封止栓が封入される筒状の被封止部と、該被封止部に形成される被嵌合部とを有し、抜止部材は、被封止部内で該被封止部の第一端側に向く第一面を有する本体部と、該本体部の第一面上に形成された規制部であって、封止栓における被封止部の第二端側への移動を規制する規制部と、ポート本体の被嵌合部に嵌合する嵌合部とを有する。
