Method for controlling a transtibial prosthesis and transtibial prosthesis

Abstract

The invention relates to a method for controlling a lower leg prosthesis comprising a foot element, a lower leg element pivotably arranged thereon and an adjustable resistance device for applying a resistance against a swivelling of the foot element relative to the lower leg element, wherein a first switching angle is defined as a predetermined ankle angle value between the lower leg element and the foot element, a second switching angle is defined as a predetermined lower leg angle value of the absolute angle of the lower leg, the method comprising the steps: at least also on the basis of a height difference between the position of the foot element in a step cycle and the position of the foot element in the previous step cycle, determining whether the wearer of the lower leg prosthesis is walking downhill, and increasing the resistance of the resistance device to a predetermined resistance value when a block criterion is met, wherein the block criterion is met if it has been determined that the wearer is not walking downhill and the second switching angle is reached, or if it has been determined that the wearer is walking downhill and the switching angle reached later in the step cycle is reached.

Dependencies are inferred from the claim text.