A food intake restriction device for forming a stoma opening in the stomach or esophagus of a patient comprises an elongated restriction member(2), forming means (10) for forming the elongated restriction member into at least a substantially closed loop around the patients stomach or esophagus, so that the loop defines a restriction opening (3), and an adjustment means (12) for adjusting the restriction member in said loop to change the size of said restriction opening. A wireless remote control means is provided for non-invasively controlling the adjustment means (12) to adjust the restriction member (2), to thereby obtain a desired size of said restriction opening.
