CELL-CAPTURING DEVICE AND CELL-CAPTURING APPARATUS

To preferably perform connection and removal of an outer flow channel, and suppress entry of bubbles to the inside even in the case where the connection and removal are repeated.SOLUTION: A cell-capturing device 1 comprises: flow channels 3A, 4A, 7A, 7B as introduction flow channels for introducing test solution or treatment solution into the device; a flow channel 9A as a discharge flow channel for discharging liquid to the outside; and a housing 50 in which the flow channel is provided inside the housing. The device has: flow channel connection parts 81 to 86 to which acicular device connection parts are attachable; and opening/closing valve mechanisms 210, 220, 230, 240, 250, 260 which control opening/closing of liquid circulation by inserting and removing the device connection parts. The opening/closing valve mechanism has: annular sealing members; a spring member which is provided inside the flow channel and whose one end is fixed inside the flow channel and the other end is a free end; and a closing member attached to the other end of the spring member. The closing member comes into contact with the annular sealing member, and the spring member and the closing member are provided inside the flow channel in the state where the spring member receives a load in a compression direction.SELECTED DRAWING: Figure 8 【課題】外部流路の接続及び取り外しが好適に行われると共に、これらを繰り返した場合でも、内部への気泡の混入を抑制する。【解決手段】被検液又は処理液を内部に導入するための導入流路としての流路３Ａ，４Ａ，７Ａ，７Ｂと、液体を外部に排出するための排出流路としての流路９Ａと、流路が内部に設けられた筐体５０と、を備える細胞捕捉デバイス１であって、針状のデバイス接続部を取り付け可能な流路接続部８１〜８６と、デバイス接続部を刺す又は抜くことにより、液体の流通の開閉を制御する開閉弁機構２１０，２２０，２３０，２４０，２５０，２６０を有する。開閉弁機構は、環状封止部材と、流路内に設けられ、その一端が流路内に固定され他端が自由端であるバネ部材と、バネ部材の他端に取り付けられる閉塞部材と、を有し、閉塞部材が環状封止部材と当接し、且つ、バネ部材が圧縮方向の荷重を受けた状態で、バネ部材および閉塞部材が流路内に設けられる。【選択図】図８