Comparison of Comfort and Perceived Risk of Mechanical Assistance of Care Beds

The purpose of this study was to compare comfort and risk between common bedding system and adjusted postures in continuous and separated given postures. Eighteen subjects took part in the measurement on flat bed and two types of adjustable care beds. Motion limitation and subtle influencing factors were also identified according to reflection of subjects. A virtual man-bed system was established basing on the subjective assessment and body measurement to explore the man-bed relationship in passive motion process. Each model was divided and subdivided to simulate human body in all given postures in repeated circulation process. Influence of deformation and force distribution can be calculated in a dynamic system. Conclusions are drawn from results of both subjective evaluation and force distribution simulation. A series of recommendations are given to improve passive motion process basing on the conclusions. The results is also be useful in design process of mechanical assistance of nursing equipments.