Abstract: A medical diagnostic device with illumination, wherein the device is composed of a handle or the like in which the batteries are received and of a head which is placed on the handle. The switching transformer is arranged in a sleeve which is insertable into the handle and is electrically connected to the battery and the luminous diode.

Abstract: A stethoscope includes a sound pickup and a reverberation chamber defined in a housing. The reverberation chamber is acoustically connected to binaurals through a connecting tubing. The reverberation chamber includes at least one sound inlet opening and the sound pickup includes at least one sound outlet opening, wherein at least one sound outlet opening and at least one sound inlet opening are arranged so as to be at least partially overlapping. The relative position of the at least one sound inlet opening and the at least one sound outlet opening is adjustable.

Abstract: An improved stethoscope having a reversible breastpiece comprises two base discs with an intermediate element relatively rotatable with respect thereto about the axis of the base discs to position its sound inlet channel with an outlet channel from the base discs. The channels in the base discs are arcuately spaced apart at extremes of relative rotational movement of the intermediate element. The sound inlet channel in the intermediate element, in turn, cooperates with nipples or fittings connected to the ear yoke. Means is provided to limit the amount of relative rotation of the intermediate element relative to the base discs, and positioning means is provided to releasably engage the intermediate element in a selected position of rotation against inadvertent misalignment. As can be seen, the several parts can be relatively easily fabricated with a high degree of precision and assembled in a fashion that enables optimal sound transfer from the selected one of the base discs.

Abstract: A milk suction device consisting of a funnel and a piston pump connected thereto which can be operated easily as a hand-operated pump or as a motor driven pump. A hollow piston rod is constructed as an outwardly guided aeration duct and has a return valve as its opening located in the suction space of a cylinder of the pump, which return valve is closed during the suction stroke of the piston pump and is constructed as an aeration valve. A ventilation valve is arranged in a front face of the pump cylinder opposite the piston rod and in order to connect a motor driven pump, it is only necessary to slide its tube onto the free end of the piston rod.

Abstract: A device for applying tension around an object such as a person's arm and leg comprises a tensioning member which has a first end portion which is connected to a rear end of a hollow basic member housing and includes a portion adapted to form an object encircling loop for engagement, for example around a person's arm and has a second opposite free end portion. The hollow basic member has a rear end wall with an entrance opening and a front end wall with an exit opening to facilitate passage of the free end portion of the tensioning member into the entrance opening through the hollow member and out the exit opening. The interior of the basic member includes a backup portion which has a backup surface over which the free end portion of the tensioning member is passed.