Apparatus for electrical stimulation of the body

A - Human Necessities – 61 – N

Patent

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A61N 1/08 (2006.01) A61N 1/36 (2006.01)

Patent

CA 2317232

A functional electrical stimulator for attachment to a leg e.g. in a patient with drop foot is provided. It comprises: first and second electrodes for attachment to the leg to apply an electrical stimulus; a foot switch for sensing foot rise or foot strike, said foot switch comprising a force-sensitive resistor; a circuit responsive to said foot switch for generating stimulation pulses; and means forming part of said circuit for responding to changes in the resistance characteristics of said foot switch by adjusting a corresponding response threshold of said circuit. The invention also provides a two-channel stimulator that offers various possibilities for controlling the signals to be supplied to different muscle groups. The two-channel stimulator can be used e.g. to treat bilateral dropped foot.

Il s'agit d'un stimulateur électrique fonctionnel à fixer à la jambe d'un patient au pied tombant. Ce stimulateur comprend les éléments qui suivent. Une première et une seconde électrode à fixer à la jambe pour appliquer un stimulus électrique; une pédale permettant de capter une élévation ou une frappe du pied, ladite pédale comprenant une résistance sensible à une force; un circuit sensible à ladite pédale pour générer des impulsions de stimulation; et des moyens intégrés audit circuit pour réagir aux changements apportés aux caractéristiques de resistance de ladite pédale, par ajustement d'un seuil de réponse correspondant dudit circuit. Cette invention fournit aussi un stimulateur bicanal qui offre diverses possibilités pour commander les signaux à appliquer aux différents groupes musculaires. Le stimulateur bicanal peut servir p. ex. à traiter un pied tombant de manière bilatérale.

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