A band saw machine includes a driving wheel and a driven wheel around which an endless band saw blade is wound. The apparatus comprises a catheter in communication with an end effector which induces a temperature rise in an annulus of tissue surrounding the leaflets of a valve or in the chordae tendineae sufficient to cause shrinkage, thereby causing the valves to close more tightly. The laser-sensitive particles absorb imaging radiation and cause the portion of the laser-ablatable member containing the laser sensitive particles and any overlying layers to be ablated. The digital MFP retrieves from the flash memory the user ID and the password that form a pair with the abbreviated code entered by the operator using the operation unit, and acquires authentication success or failure information with respect to the retrieved user ID and the password from an authentication server.