PROBLEM TO BE SOLVED: To provide a hemostasis valve device for preventing air from flowing into a blood vessel. A connector including a first channel, a holder arranged at a first end of the connector and communicating with the first channel, and a holder arranged at a second end of the connector and selecting the first channel. The connector 100 includes a first pipe 100A including a first channel and a second channel branched from a first point of the first pipe 100A and communicating with the first channel. The second tube 100B including the first tube 100A, the first tube 100A includes a hole that communicates the first channel with the outside, and further includes an opening/closing unit 400 disposed in the first tube 100A to selectively open and close the hole. The hall is a hemostasis valve device disposed between the first end and the first point. [Selection diagram] Figure 1【課題】血管内への空気の流入を防止する止血弁装置を提供する。【解決手段】第１チャネルを含むコネクタ１００と、コネクタ１００の第１端部に配され、第１チャネルと連通するホルダー２００と、コネクタ１００の第２端部に配され、第１チャネルを選択的に開閉する弁部３００と、を含み、コネクタ１００は、第１チャネルを含む第１管１００Ａと、第１管１００Ａの第１地点から分岐され、第１チャネルと連通される第２チャネルを含む第２管１００Ｂと、を含み、第１管１００Ａは、第１チャネルと外部を連通するホールを含み、第１管１００Ａに配されて、ホールを選択的に開閉する開閉部４００をさらに含み、ホールは、第１端部と第１地点との間に配される止血弁装置。【選択図】図１
