Abstract: A modular administration appliance including a reusable base unit and a replaceable cartridge detachably connected to the base unit and including a container for a substance and a rotatable transmission element, the base unit including a drive device by which a rotary movement is transmitted between the base unit and the cartridge, and a driving element displaceable in a rotary movement about a rotational axis by the drive device, wherein a rotation of the transmission element causes the ejection of at least a portion of the substance from the container. In some embodiments, the transmission element at least partially surrounds the drive device, and/or the drive element and the transmission element are detachably connectable to each other for transmitting the rotational movement.

Abstract: A modular administration appliance including a reusable base unit and a replaceable cartridge detachably connected to the base unit and including a container for a substance and a rotatable transmission element, the base unit including a drive device by which a rotary movement is transmitted between the base unit and the cartridge, and a driving element displaceable in a rotary movement about a rotational axis by the drive device, wherein a rotation of the transmission element causes the ejection of at least a portion of the substance from the container. In some embodiments, the transmission element at least partially surrounds the drive device, and/or the drive element and the transmission element are detachably connectable to each other for transmitting the rotational movement.

Abstract: A hearing aid includes a shaped body that is adapted to an individual auditory canal. A casting cavity is created from a central casting space element, an outer casting space element, and a canal element. The casting cavity is filled while inside the auditory canal. The central casting space element, which remains on the hearing aid, has an outer and an inner ring as well as a tubular and extendible membrane. The outer casting space element delimits the casting cavity on the outer face. After casting, the outer casting space element is replaced by an electronics module including a loudspeaker. The at least partly flexible canal element can hold the loudspeaker canal open, can be joined in a fixed or detachable manner to the outer casting space element, and can essentially close the opening of the inner ring and can limit the axial mobility of the inner ring.

Abstract: A hearing aid is worn completely in the auditory canal to the individual form of which it is precisely adapted and it has element a body consisting of a soft material (Shore hardness A from 5 to 70). This body is the supporting element of the appliance and the components (10, 11, 12) serving the hearing function are cast into the body substantially floating. In its general condition, i.e. in a condition not yet adapted to an individual auditory canal, the hearing aid comprises an element which limits its axial length, this length-limiting element is e.g. a bar-shaped, provisional supporting element (18) protruding from the hearing aid on the inner and on the outer face and being fixed by a locking arrangement (25). After casting the body by filling the casting cavity (31) with a casting material when the general hearing aid is placed in an auditory canal or in a model of an auditory canal, the provisional supporting element (18) is removed leaving a ventilation channel (43) through the cast body.