Damper unit and orthopedic device

Abstract

The invention relates to a damper unit (40) comprising: a hydraulic cylinder (50) having a hydraulic piston (51) movably mounted therein, which hydraulic piston is coupled to a piston rod (70) and divides the hydraulic cylinder (50) into two hydraulic chambers (52, 53) which are fluidically interconnected via at least one hydraulic channel (54); and a pneumatic cylinder (60) having a pneumatic piston (61) movably mounted therein, which pneumatic piston is coupled to the piston rod (70) and divides the pneumatic cylinder (60) into two pneumatic chambers (62, 63) which are fluidically interconnected via at least one pneumatic channel (64); wherein the value of the volume change of the hydraulic chambers (52, 53) during a movement of the hydraulic piston (51) is different and the hydraulic chambers (52, 53) are fluidically coupled to an equalisation volume (80).

Dependencies are inferred from the claim text.