| 摘要 |
A cushion device for use when placed in seats, in beds, or on floors, comprising a flexible hollow, enclosed shell having two large opposed surfaces, the shell capable of containing gas or liquid without substantial leakage, and having a port or a plurality of ports that can allow gas or liquid to enter into or to escape from the shell, the port or ports each being provided with closure means which can substantially prevent entry and escape of gas or liquid from the shell. The shell, when empty, can maintain a substantially flat form when held by one hand from an edge of the shell for the ease of handling, storage or transportation, and can allow a substantial adjustable expansion under working condition, due to the provision of a stiffener, a cover or its inherent firmness, rigidity or stiffness. It may be used for heat treatment, cooling treatment and for back, spine and extremities exercises and support of the user.
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