may be provided with a recess or slot 124 or other suitable mechanism for receiving a portion of the guidewire 1 in order to enhance stability of the guidewire 1 during its use the power source of energizer 110 may also be provided with a mechanism 114 which as shown may but need not be on the engagement mechanism 112 for temporarily gripping the proximal portion or end of the guidewire the connection jack 120 also allows 360 degrees rotation of the guidewire 1 within the power source or energizer 110 to allow the user via controller 46 or 150 to torque the guidewire 1 without limitation the mechanical connection may occur in a variety of means including through the use of an electrically conductive gripping spring socket or latch this jack 120 is electrically connected to the power source or energizer 110 based on the anticipated power requirements the power source or energizer 110 may be varied in one embodiment two wires exit the energizer 110 and are connected via wire s 122 to the switch e g 26 or 160 when the switch 36 or 160 is closed electrical current flows from the battery e g 130 through wire s 122 and the switch e g 160 to the guidewire 1 with the resultant activation of the distal tip in another embodiment the switch 160 may be configured to be attachable to the controller 150 the switch 160 may be of circumferential geometry with a slot provided along one side this slot is sized to accommodate the side entry ability of the controller 150 the switch 160 could be placed over the guidewire 1 and then advanced onto the back end of the controller 150 where it would lock into position on.