A kind of drainage bottle includes bottle body and arcuation counterweight element. Bottle body has top, bottom and accommodating space. Wherein, there is connector to be connected to accommodating space at top. Arcuation counterweight element is arranged on bottom.一種引流瓶裝置包含瓶體以及弧狀配重單元。瓶體具有頂部、底部以及容置空間。其中,頂部具有連接口連通容置空間。弧狀配重單元設置在底部上。