| 摘要 |
As the former triangle cushion is suitable for putting it between the body and the bed for body position changes at recumbency, effective for preventing bedsores, flexible enough to hold the correct position on the wheelchair for those who have difficulty in sitting upright, and it is helpful to sit straight, the five surface form cushion is used to avoid wear-out on vertex points of the triangle cushion without replacing hard materials. It is characteristic that a five surface form cushion is formed two plane surfaces (1) and (3) and (6) and (7) are set up in two of three vertex points of the triangle in order to avoid wear-out on flexible vertex points of the triangle cushion without replacing hard materials and does not adversely affect the advantage of the flexible triangular cushion that is easy to insert between the body and the bed without making the material of a hard substance.
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