PROBLEM TO BE SOLVED: To provide a waterproof sheet stopper so as to solve the following problems: contamination of a sheet and a mattress by displacement of a waterproof sheet brings a feeling of discomfort to a care receiver and causes poor hygiene and a burden is imposed on an assistance person performing correction and replacement.SOLUTION: The stopper includes an inner shaft 2, a central shaft 3, and an outer shaft 4 in a tip of a resin flat plate gripping part 1 and a nonslip part 5 is applied thereto. The stopper prevents the contamination of the sheet and the mattress by preventing the displacement of the waterproof sheet, improves the care receivers sense of use, and reduces the burden on the assistance person.COPYRIGHT: (C)2013,JPO&INPIT【課題】防水シーツのズレによってシーツ・敷布団が汚染し、被介護者に不快感を与え、不衛生でもあり、また修正・交換をする介助者の負担にもつながっていた。防水シーツの止め具を提供する。【解決手段】樹脂平板握り部1の先端に内軸2・中軸3・外軸4を設け、滑り止め5を施した。【選択図】図1