Mattress

Abstract

The objective of the present invention is to provide a mattress having a novel structure and whereby the prevention of bedsores by means of body pressure distribution is effectively achieved, and the sensation of use is improved. In the mattress (10), a plurality of cells (16) are provided on the body-pressure-acting surface of a substrate (20) that supports a human body, and a pressure adjustment means (54) is provided that variably sets the height of the cells (16) by adjusting the pressure of fluid chambers (40) formed within the cells (16). A cushion layer (22) having elasticity is provided on the body-pressure-acting surface of the cells (16), a constricted section (44) is formed at the intermediate section in the height direction of the cells (16), and by means of the cells (16) undergoing oscillating deformation at the constricted section (44), the body-pressure-acting surfaces of the cells (16) are permitted to incline to track the deformation of the cushion layer (22).

Description

technical field [0001] The present invention relates to a mattress used for nursing beds and the like. Background technique [0002] Conventionally, mattresses having a cushioning function have been used as support parts for supporting the human body in nursing beds and the like, and improved sleeping comfort is sought by elastically supporting the human body. The mattress is formed of elastic materials such as polyurethane foam, for example. [0003] When a user who has trouble turning over uses a normal mattress continuously for a long period of time, the reaction force of the body pressure (the pressure generated by the load of the human body) continuously acts on the user's local area, which may cause deterioration of the blood flow, etc. cause bedsores. Therefore, in order to prevent decubitus ulcers, a movable mattress that can substantially disperse the reaction force of the user's body pressure by changing the position where the user's body pressure acts by utilizi...

AI Technical Summary

Problems solved by technology

[0006] However, in the mattress described in Patent Document 2, in order to maintain each unit in a predetermined direction, a support member is provided to connect the units to each other, and the deformation of the unit is generally limited to the vertical direction. Pressure dispersion is not sufficient

That is, in the structure of Patent Document 2, the surface shape of the mattress can only follow the surface of the human body in a smooth curved shape in a stepped manner, and the body pressure acts concentratedly on, for example, the portion where the outer peripheral portion of the unit contacts the human body. These areas may develop pressure sores

[0007] Moreover, the units are positioned relative to each other by the support members in the face direction of the mattress, thereby limiting deformation, displacement towards the face direction of the mattress surface, when the user moves his body along the face direction of the mattress, between the user and the bed. Friction between pad surfaces can also be the cause of bedsores

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