A device is provided for releasing a spear shaft of a spear gun for scuba diving or the like. Manually positionable linkages support surgical instruments. The diverting apparatus is mounted on the surface of the platform without influencing the smooth rotation of the continuous belt for carrying off the static electricity produced by friction within a walking area of the treadmill by providing a direct grounding path through the connection of the other end of the conductive strip to the ground. A comparator monitors the load current and causes one or more of the single phase switching regulators to be OFF at a low load current threshold. This allows for sufficient time for release testing to occur so the neo-organ can be implanted into the patient.