Apparatus for resecting corneal tissue

Details Apparatus for resecting corneal tissue Apparatus for resecting corneal tissue

A - Human Necessities

61

F

A61F 9/007 (2006.01) A61F 9/013 (2006.01)

Patent

CA 2239788

A cutting instrument (100) for severing a thin layer of corneal tissue from the surface of the eye, preferably leaving a flap. The cutting instrument includes a body portion (102) that forces the surface of the eye against an aplanatic surface (202) through a vacuum. A blade (112) with a cutting edge (114) not perpendicular to the direction of travel is then urged across the surface of the eye, severing a thin layer of corneal tissue. The blade can then be retracted, the instrument removed, leaving a flap of corneal tissue suitable for surgical procedures to modify corneal curvature.

Instrument coupant (100) qui permet d'enlever de la surface d'un oeil une fine couche de tissu cornéen, de préférence en laissant un lambeau. L'instrument comprend une partie corps (102) qui presse la surface de l'oeil contre une surface aplanétique (202) par le biais d'un système d'aspiration. Puis une lame (112) comportant un bord coupant (114) non perpendiculaire à la direction de déplacement est passée à la surface de l'oeil, de façon à enlever une fine couche de tissu cornéen. La lame peut ensuite être rétractée et l'instrument enlevé, laissant un lambeau de tissu cornéen qui peut être utilisé pour des interventions chirurgicales visant à modifier la courbure de la cornée.

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