To provide a mechanism to easily lift the attack to reduce the labor in replacing a diaper for a bedridden old person.

In a small airbag to be laid under an upper part of a patient body, the airbag is inflated in wedge-like section when the air is filled in the airbag, and the hip can also be lifted indirectly if the waist is held highest and the airbag is gradually inclined from the back to the shoulder. Since the lifting height is different according to the working details and the physique, a controllable system is formed by the quantity of the air to be filled.