Cannulas are provided for delivering therapeutic material to a treatment site. and between 100 Hz and 240 Hz; andthe thickness h of the first component is set so that h\u22660. One of the primary goals of the present invention is to reliably embed copy control information into the played media signal by a copyright owner of the media and by a playing device using a watermark technology. A bread is formed to accept a pouch containing filling. Ball bearings 2 are mated to both ends of a shaft 1, and to the outer circumference of these ball bearings 2, an inner wall part 31 mates a sleeve disposed between both ball bearings 2, and the sleeve 3 was fixed by laser welding to the outer ring 22 of the ball bearings 2. When a spinwait detecting unit provided to a processor detects execution of a spinwait command, it instructs monitoring of a variable value as a spinwait end condition and changes an operating state of a processor.