An anal incontinence treatment apparatus comprises an adjustable restriction device (234) implanted in a patient, who suffers from anal incontinence. The restriction device engages the rectum (244) of the patient to restrict, i.e. to close the faecal passageway. An implanted adjustment device is adapted to adjust the restriction device such that the rectum is temporarily released, in order to open the faecal passageway when the patient wants to relieve himself or herself. An implanted powered operation device (246), which may include servo means, operates the adjustment device.
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