| 摘要 |
PURPOSE:To eliminate the damage of an instrument, the injury of an operator and the terror given to a patient and to facilitate receiving drawing-out operations by providing a slide part for moving an instrument forwardly and rearwardly, a freely openable and closable lid and a cooperation means for automatically opening and closing the lid to a receiving part receiving the instrument at the time of non-use. CONSTITUTION:In such a non-use state that an instrument holder 11 is slid to the deepest part of a receiving part 9 and an instrument 7 is received in the receiving part 9, a lid 13 closes an entrance and exit part 9A by a spring 14 and, therefore, the damage of the instrument 7 or the injury of an operator can be prevented. When the instrument 7 is used, a cylinder 12 is operated to move the instrument holder 11 along a rail 10 and a press plate 15 is brought into contact with the inclined plate part 13A of the lid 13 to open the lid 13 around a fulcrum 13R. Continuously, when the leading end part of the instrument 7 protrudes forwardly through the entrance and exit part 9A, the cylinder 12 is stopped. |
