| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To facilitate the handling of a drain tray after executing a break-in operation or a spray-cleaning operation by preventing the accumulation of water in the drain tray when executing the break-in operation or the spray-cleaning operation. <P>SOLUTION: This instrument holder 2 is installed with a dental treatment instrument 3 including a saliva discharge tube or a vacuum tube, and the drain tray 10 is detachably mounted below the tip of the installed instrument 3 and, when the instrument executes the break-in operation or spraying operation, receives water discharged from the instrument. The instrument holder 2 has a tray detecting sensor 13 detecting the installation of the drain tray 10 and, only when the drain tray 10 is installed thereon, the saliva discharge tube or the vacuum tube 3<SB>1</SB>is removed and a sucking operation is executed, allows the break-in operation and the spray-cleaning operation of the instrument 3<SB>2</SB>. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
