Abstract

We present the overall design of ANG, a new walking aid for the elderly. The objectives of this walking aid is to provide a low-cost and low-intrusivity aid for the elderly. ANG is based on a classical 4-wheel Rollator, the two rear wheels being fixed while the two front are caster wheels. The rear wheels have been motorized, a bistable clutching mechanism allowing to clutch and unclutch the motors at will. ANG will provide fall prevention, navigation assistance, walking aid and may also be used as a rehabilitation tool. We present in this paper the mechanical design of ANG and some of the modes in which it may be used.

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