| 摘要 |
PROBLEM TO BE SOLVED: To offer simple construction for preventing the entry of a water between a rotational shaft and a bearing. SOLUTION: In this cornea operating device, a rotational shaft is rotated by a motor, the rotation of the rotational shaft is changed into transverse vibration to be transmitted to a blade and the eye cornea of a patient is operated in layers with the transversely vibrated blade. The entry of a water between the bearing supporting the rotational shaft in a rotatable manner and the rotational shaft is prevented by water entry preventing means for the rotational control of the rotational shaft. |
