Laser device for ophthalmology

A - Human Necessities – 61 – F

Patent

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Details

A61F 9/01 (2006.01) A61B 18/20 (2006.01) A61B 18/22 (2006.01) A61F 9/009 (2006.01)

Patent

CA 2754744

An ophthalmic laser apparatus includes components for providing a first pulsed laser beam (140) having beam properties matched to the ablation of corneal material and for providing a second pulsed laser beam (290) having beam properties matched to the making of an incision in the ocular tissue. The components include separate laser-sources (110, 130) for generating the two laser beams and also a plurality of optical elements which guide the two laser beams on separate beam paths to a respective beam exit location and focus them to a focal point situated outside the beam exit location. In accordance with the invention, the optical elements include an optical waveguide (250) serving for guidance of the second laser beam, at least the two laser-sources being accommodated in a common housing (340) and the optical waveguide extending within the housing at least over a part of its length.

L'invention concerne un dispositif laser pour l'ophtalmologie qui comporte des composants pour produire un premier faisceau laser (140) pulsé ayant des propriétés de faisceau ajustées à l'ablation de matière de cornée et un deuxième faisceau laser (290) pulsé ayant des propriétés de faisceau ajustées à la pratique d'une incision dans le tissu oculaire. Les composants comportent des sources laser distinctes (110, 130) pour générer les deux faisceaux laser ainsi qu'une pluralité d'éléments optiques qui guident les deux faisceaux laser sur des trajectoires de faisceau distinctes vers un lieu de sortie de faisceau propre et les focalisent sur un point de focalisation se trouvant en dehors du lieu de sortie de faisceau. Selon l'invention, les éléments optiques comportent un guide d'onde de lumière (250) servant au guidage du deuxième faisceau laser, les deux sources laser étant logées dans un boîtier commun (340) et le guide d'onde de lumière s'étendant au moins sur une partie de sa longueur à l'intérieur du boîtier.

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