Thermokeratoplasty system with a guided probe tip

Details Thermokeratoplasty system with a guided probe tip Thermokeratoplasty system with a guided probe tip

A - Human Necessities

61

F

A61F 9/013 (2006.01)

Patent

CA 2526312

A template that is used with a probe to perform a medical procedure on a cornea. One embodiment of the template includes one or more openings that are used to align the probe with locations of the cornea that are to be denatured with energy transferred by the probe. By way of example, the openings may be located at 6, 7 and 8 millimeters about the center of the cornea. The denatured spots may collectively decrease the radius of curvature of the cornea. The template may have a bottom surface that conforms to the shape of the cornea. The template may have a centering feature that is used to center the template on the cornea and a vacuum channel that maintains the position of the template. The template openings may have stop features that limit a penetration depth of the probe.

Cette invention concerne un gabarit utilisé avec une sonde lors d'interventions chirurgicales sur la cornée. Dans un mode de réalisation, le gabarit comporte des ouvertures servant à aligner la sonde sur des points de la cornée qui doivent être dénaturés par l'énergie provenant de la sonde. A titre d'exemple, les ouvertures peuvent se trouver à 6, 7 et 8 millimètres du centre de la cornée. Pris ensemble, ces points dénaturés peuvent entraîner une diminution du rayon de courbure de la cornée. Le gabarit peut présenter une surface inférieure dont la forme épouse celle de la cornée. Il peut également comporter un dispositif de centrage qui permet de le centrer sur la cornée et un canal sous vide immobilisant le gabarit. Les ouvertures du gabarit peut présenter des butées qui limitent la profondeur de pénétration de la sonde.

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