CONTROLLER FOR A FUNCTIONAL ELECTRICAL STIMULATOR

CONTROLLER FOR A FUNCTIONAL ELECTRICAL STIMULATOR

A controller 12 is provided for a functional electrical stimulator (FES) for attachment to a leg comprising, a connector for a foot switch 18 for sensing foot rise or foot strike, a circuit for responding to said foot switch 12 for generating stimulation pulses and a connector for first and second e...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: DARREN JOHN HART, PAUL NICHOLAS TAYLOR, RODNEY PAUL LANE, STEVEN ERIC CROOK, IAN DOUGLAS SWAIN, STACEY MICHAEL FINN
Format: Patent
Sprache:eng
Schlagworte:
BANDAGES, DRESSINGS OR ABSORBENT PADS
DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS
ELECTROTHERAPY
FILTERS IMPLANTABLE INTO BLOOD VESSELS
FIRST-AID KITS
FOMENTATION
HUMAN NECESSITIES
HYGIENE
MAGNETOTHERAPY
MEDICAL OR VETERINARY SCIENCE
ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES
PROSTHESES
RADIATION THERAPY
TREATMENT OR PROTECTION OF EYES OR EARS
ULTRASOUND THERAPY
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Beschreibung
Zusammenfassung:A controller 12 is provided for a functional electrical stimulator (FES) for attachment to a leg comprising, a connector for a foot switch 18 for sensing foot rise or foot strike, a circuit for responding to said foot switch 12 for generating stimulation pulses and a connector for first and second electrodes 14, 16 for attachment to the leg for supplying stimulation pulses from said circuit The circuit includes a voltage divider (18, 34 fig 2) of which the foot switch when connected comprises one element (18 fig 2) , a second element being provided by a digital potentiometer forming part of the controller (34). A microcontroller (20 fig 2) is configured to make adaptive adjustment of the resistance of said digital potentiometer (34) to take account of the resistance characteristics of the foot switch to provide an output or reference voltage permitting an open/closed state of the switch to be monitored.