A shaping device and a cardiac lead, both adapted to be disposed in a coronary sinus of a patient’s heart, are provided. When a position signal for representing a position of at least one of the control switch and the operator is transmitted from at least one of the control switch and the operator, an obtaining unit obtains relative position information indicative of a relative positional relationship between the control switch and the operator based on the transmitted position signal. A hybrid brake system provides regenerative braking, with mechanical braking available in the event the battery bank is fully charged, in emergencies, or at rest; a control mechanism is provided to control the brake system to provide linear brake feel under varying circumstances. The sectional shape of the piezoelectric layer is a \u201cquadrilateral having a height of from 0. 5 to 15% by weight, based on the solids of the heat-curable composition, of at least one C-C-cleaving initiator. The data communication system includes a plurality of digital subscriber lines, a digital subscriber line multiplexer coupled to each of the plurality of digital subscriber lines; and a data switch coupled to the digital subscriber line multiplexer via a communication link.