Abstract: A linear force-measuring device for a hydraulic actuator of an orthopedic device. The force-measuring device includes a base, a bearing receptacle and at least one sensor for detecting changes in length between the base and the bearing receptacle, wherein the bearing receptacle is connected to the base via two opposing connecting parts, and the at least one sensor is secured to one of the connecting parts.

Abstract: A linear force-measuring device for a hydraulic actuator of an orthopedic device. The force-measuring device includes a base, a bearing receptacle and at least one sensor for detecting changes in length between the base and the bearing receptacle, wherein the bearing receptacle is connected to the base via two opposing connecting parts, and the at least one sensor is secured to one of the connecting parts.

Abstract: In a method and a device for prolonging the duration of use of a self-contained compressed air breathing apparatus, which includes a storage tank for a pressurised gas mixture containing oxygen, a breathing regulator connected to the storage tank, wherein a pressure regulator can optionally be inserted therebetween, and a mouthpiece, the following steps are provided: a) inhalation of the gas mixture from the storage tank, b) exhalation of the gas mixture into a breathing gas reservoir, c) inhalation of the gas mixture from the breathing gas reservoir and d1) exhalation of the gas mixture into the breathing gas reservoir or d2) exhalation of the gas mixture into the surroundings.