PROBLEM TO BE SOLVED: To provide an attachment for bathing, when a care-receiver has a bath in a seated posture, reducing a burden applied to both of a caretaker and the care-receiver and implementing comfortable bathing by improving the seated posture of the care-receiver.SOLUTION: The care assist attachment includes a body removably fitted to armrests of a seat and regulating a space between itself and a backrest of the seat. The body includes: a plurality of openings configured to be functioned as any of an air hole, a water inlet, and a drain outlet and a cavity formed to communicate to the plurality of openings and configured to be functioned as a water chamber for storing water entering through at least one of the plurality of openings.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】被介護者が座位で入浴する際、介護者および被介護者の双方にかかる負担が小さく、被介護者の座位を改善して快適な入浴を実現する入浴用アタッチメントが望まれる。【解決手段】介護補助用アタッチメントは、座席の肘掛けに取り外し可能に装着され、前記座席の背もたれとの間で空間を規定する本体を有し、前記本体は、空気孔、取水口、排水口のいずれかとして機能するように構成された複数の開口と、前記複数の開口に連通するように形成され、前記複数の開口の少なくとも1つを通じて侵入した水を貯留する水室として機能するように構成された空洞と、を備える。【選択図】図1