A detachable bedside drainage tube fixing device with a slide rail includes a linear slide rail and a triangular sliding frame. The linear slide rail is fixedly installed on the side of the
bed. The triangular sliding frame has a triangular sliding groove. A
fixed bearing is installed at one corner of the triangular sliding frame, and a rotating shaft is installed in the middle of the
fixed bearing. The end of the rotating shaft passes through the triangular sliding frame and is fitted with a sliding component, which is movably installed within the linear slide rail. A sliding bearing is slidably connected within the triangular sliding groove, and a positioning ball is installed within the sliding bearing. The surface of the positioning ball has a bowl-shaped notch. This invention overcomes the shortcomings of the prior art, effectively avoiding needlestick injuries caused by using
sharp instruments for fixing, and allowing for adaptive adjustment of the drainage tube's fixing position, thereby effectively preventing accidental tube removal or bleeding due to traction on the drainage tube.