Peroneal stimulator

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A peron (a) eus stimulator ( fibula muscle stimulator ) is a medical system that is supposed to help people who suffer from weak feet to achieve a better gait. It uses functional electrical stimulation to activate the muscles involved in lifting the feet while walking. The stimulation can take place either via an implant, the electrodes of which are placed directly around the nerve, or non-invasively via skin electrodes coated with conductive gel. In order to synchronize the stimulation with the gait, heel contact switches are used almost exclusively, which report to a control unit either via cable or via radio whether the heel is currently being stressed or not. ActiGait was developed in Germany. Alternatively, the STIMuSTEP system from England is available.

functionality

The description is based on the example of the ActiGait peroneal stimulator: If the person concerned wants to take a step, the heel switch registers this and informs the control unit that the foot has left the floor. This information is passed on to the implant wirelessly via the antenna (placed on the surface of the skin). The implant stimulates the fibula muscles and the foot is lifted in a controlled manner. If the heel touches the ground again, the stimulation ends. The high technical effort, problems with electrode dislocations, cable breaks and insufficient detection of the gait cycle phases in the plane are seen as disadvantageous .

requirements

There are a few prerequisites that a patient must have for the implantation of a peroneal stimulator:

  • The peroneus stimulator is suitable for patients with mild to moderate hemiplegia with a pronounced leg stress after a stroke more than 6 months ago.
  • In principle, the patient must be able to walk on a stick. He should be able to cover 20 meters in less than 2 minutes with or without aids.
  • There must be no insufficiently controlled diabetes mellitus.
  • There should be no other nerve damage, e.g. B. have severe diabetic polyneuropathy.
  • The patient should not have epilepsy with more than one attack in 2 months.
  • Patients with cardiac pacemakers cannot currently be treated with the peroneal stimulator.

Individual evidence

  1. ↑ a b www.fussheberschwaeche.de
  2. ↑ a b Peter Frommelt, Hubert Lösslein: NeuroRehabilitation: A practical book for interdisciplinary teams. Springer, Berlin 2010, ISBN 978-3-642-12914-8 , p. 278.
  3. ↑ Neurology Uni Göttingen, Neuroprothetik ( Memento of the original from June 19, 2013 in the Internet Archive ) Info: The archive link has been inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.neurologie.uni-goettingen.de

literature

  • C. Weimar, DC Diener: Diagnosis and therapy of stroke treatment in Germany. Results of the German Stroke Database. In: Deutsches Ärzteblatt. 100 (2003), pp. A2576-A2582.