Abstract: A kit comprises a device (1) for electrotherapy and/or electrophysiology and a delivery system and method for the device. The device (1) includes a lead (2) and a paddle (5) comprising at least one electrode (8), the paddle (5) being reconfigurable between an operative configuration and a transport configuration of smaller transverse extent. The delivery system comprises a flexible, hollow outer sheath (28) and a hollow delivery sheath (100) for receiving at least the paddle (5) of the device (1) in the transport configuration. The delivery sheath (100) may be inserted into a proximal end of the outer sheath (28) and transported through the outer sheath (28) to deliver the paddle (5) of the device (1) to a distal end of the outer sheath (28), which is located at or directed towards an implantation site in the body (11) of a patient. The delivery sheath (100) protects the paddle (5) during transport and permits enhanced control of the position and orientation of the paddle (5) when it is deployed.