Aiming to the difficulty of washing-hand for a one-armed man, functional requirements of washing-hand for a one-armed man is analyzed, and TRIZ theory is described in detail. A novel conceptual assisted washing-hand device for a one-armed man is put forward in this paper. Innovative problems of the assisted washing-hand device design were solved based on contradiction conflict matrix theory and material field theory of TRIZ. The whole three-dimensional model of assisted washing-hand device is built. TRIZ theory can provide the reference basis for structural design of assisted washing-hand device for a one-armed man.
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