An arrangement in connection with the handling of patient fluids, comprising a suction canister open at one end, a cover for closing the suction canister, a suction bag fastened to the cover, and an underpressure apparatus for applying underpressure to a space between the suction canister and the suction bag. The arrangement further comprises fastening means for keeping the suction bag narrowed in such a manner that the width and length of the suction bag are at least along part of the suction bag smaller than when the suction bag is opened, and the fastening means are arranged to release the suction bag to be opened into the suction canister under the action of the underpressure when the cover is closed.一種有關病患流體處理的裝置，包括：一吸入罐(320)，係於一端敞開；一蓋(310)，係用來封閉該吸入罐(320)；一吸入袋(300)，係繫緊於該蓋(310)；以及一減壓設備(340)，係用來將減壓施加於吸入罐(320)與吸入袋(300)間之一空間。此裝置進一步包括：繫緊裝置(330、332)，其用來保持吸入袋(300)縮小，俾吸入袋(300)的寬度及長度的至少沿吸入袋部分較吸入袋(300)打開時小，且繫緊裝置(330、332)配置成，當蓋(310)封閉時，其在減壓作用下解開，使吸入袋(300)打開而進入吸入罐(320)內。
