| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To eliminate risks of the breaking of an instrument hose by reducing a load on the instrument hose when the instrument hose is pulled out, and to prevent malfunctions in returning an instrument by a deliberate action of an operator to return the instrument. <P>SOLUTION: A work table includes a pulley block 20 sliding along an extending guide plate 10 which has a surface perpendicular to a surface of a lower part on the surface of the lower part of the work table 1 for dental treatments, the instrument hose 5 provided by being wound around a pulley 21, and a braking means 25 for locking the pulley block 20 on the guide plate 10, and the dental treatment is performed by pulling out the instrument 4 for a desired amount and by locking the pulley block at the position where the instrument is pulled out. A sensor 26 is provided above a port 21 for pulling out the instrument of an instrument holder 2, and the instrument hose is pulled back by unlocking the braking means 25 when the sensor 26 detects that the instrument hose 5 is pulled upward. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
