Corneal surgical apparatus
AssigneeNidek Co., Ltd.
InventorMasahiro Sugimura
Life of this patent
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Abstract
A corneal surgical apparatus for incising a cornea of a patient's eye in a layered form includes: a blade; a rotating shaft; a bearing rotatably supporting the rotating shaft; a transmitting mechanism which converts rotation of the rotating shaft about a rotation center axis into oscillation in a direction perpendicular to the rotation center axis and transmits the oscillation to the blade; and a preventing mechanism which prevents moisture component from penetrating or infiltrating into a clearance between the rotating shaft and the bearing by controlling the rotation of the rotating shaft.
Claims16
A corneal surgical apparatus for incising a cornea of a patient's eye in a layered form, comprising:
- a blade;
- a rotating shaft;
- a bearing rotatably supporting the rotating shaft;
- transmitting means for converting rotation of the rotating shaft about a rotation center axis into oscillation in a direction perpendicular to the rotation center axis and transmitting the oscillation to the blade;
- and
- preventing means for preventing moisture component from penetrating into a clearance between the rotating shaft and the bearing by controlling the rotation of the rotating shaft.
A corneal surgical apparatus for incising a cornea of a patient's eye in a layered form, comprising:
- a blade;
- a rotating shaft having a blade side close to the blade and an opposite side opposite from the blade with respect to the blade side, wherein a center of gravity of the opposite side is offset from a rotation center axis of the rotating shaft;
- a bearing rotatably supporting the rotating shaft;
- an eccentric pin that is projectingly provided on a blade side leading end of the rotating shaft and that is offset from the rotation center axis;
- and
- a transmitting member having a groove engaged with the eccentric pin, the transmitting member being supported movably in a direction perpendicular to the rotation center axis.
A transmitting mechanism, in a corneal surgical apparatus, for converting inputted rotation into oscillation and transmitting the oscillation to a blade, the transmitting mechanism comprising:
- a rotating shaft having a first side to which the rotation is inputted and a second side opposite from the first side;
- a bearing rotatably supporting the rotating shaft;
- a first, discrete unbalance component provided to the first side, and
- a second, discrete unbalance component provided to the second side.
Dependencies are inferred from the claim text.