Patent ID: 8464597

Claim:
A sensor assembly in an artificial leg for measuring forces and torques for gait analysis, the forces and torque being transmitted by means of a rigid transmitter having a first part and a second part, the sensor assembly comprising: a first connection connectable to the first part of the transmitter; a second connection connectable to the second part of the transmitter; electromechanical sensor elements for converting mechanical parameters into electrical parameters; a first flange surrounding the first connection and originating at the first connection; a second flange aligned substantially parallel to the first flange, wherein the second connection is arranged on the second flange and has a first surface and a second surface; a plurality of struts substantially perpendicular to the first flange and connecting the first flange to the second flange, the plurality of struts transmitting forces from the first flange to the second flange; wherein a gap is formed between the first flange, the second flange and the struts, and wherein the gap between the struts is larger than a width of the struts; and wherein the electromechanical sensor elements are designed for determining strains or compressions and are arranged next to the plurality of struts on at least one of the first and second surfaces of the second flange; wherein the sensor assembly has an x-direction, a y-direction, and a z-direction that are perpendicular to each other, and strains and compressions of the electromechanical sensor elements are used to determine different forces and moments occurring in at least two of the directions of the sensor assembly for use in the gait analysis.