Surgery – Instruments – Corneal cutter or guide for corneal cutter
Reexamination Certificate
2011-04-12
2011-04-12
Ho, (Jackie) Tan-Uyen T (Department: 3731)
Surgery
Instruments
Corneal cutter or guide for corneal cutter
Reexamination Certificate
active
07922735
ABSTRACT:
The invention relates to a device for cutting the cornea of an eye to correct the refractive power thereof, having a frame that comprises a fixation ring, which may be drawn onto the eye, as well as a receptacle, which may be coaxially displaced relative to the fixation ring and which serves to accommodate an applanator for deforming the cornea within the fixation ring, and a holding device, which is guided on the frame in a plane that is perpendicular to the axis with regard to the fixation ring and which serves to hold a blade, which passes through the frame via a peripheral recess and which is mounted in front of the applanator, being radially displaceable relative to the fixation ring as well as movable around an axis perpendicular to the guiding plane, for the purpose of cutting a pocket through a merely tunnel-like entry into the corneal tissue. In order to obtain advantageous cutting conditions, it is suggested to have the blade pass through the frame recess with clearance, and to have the holding device support a vibrator for setting the blade in oscillatory motion in the cutting plane.
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Collard & Roe P.C.
Ho (Jackie) Tan-Uyen T
Tanner Jocelin C
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