| 摘要 |
PROBLEM TO BE SOLVED: To make the maximum inflation width and the inflating direction of an airbag constant. SOLUTION: In this device, a bellows airbag is arranged between a back member 8 for raising up the upper part of a patient and a base board 12, and an inflation control means comprising sheet pieces 22 and a direction control means comprising tension wires 23 for pulling the airbag in the direction of rotating center of the back member 8 are added further. Thereby, the airbag inflates with drawing an arc in the same rotating direction as the back member 8. |
