Light instrument, in particular for use in ophthalmologic...

A - Human Necessities – 61 – N

Patent

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Details

A61N 5/06 (2006.01) A61F 9/007 (2006.01) A61B 19/00 (2006.01) G02B 6/24 (2006.01)

Patent

CA 2324271

A microsurgical lighting instrument (50) includes a hollow needle (30), and a light guide (40) received coaxially within the hollow needle (30), and connected to a light source for transmitting light to a surgical site of a patient. The light guide has a distal end (43) formed with an end face of circular segment shape (42), defined by a plane oriented orthogonal to the axis of the hollow needle (30), a slanted surface (44) adjacent the end face (42), and extending rearward at an acute angle, with the slanted surface (44) being lined by a coating for reflection of incident light rays.

L'invention concerne un instrument d'éclairage (50) microchirurgical comprenant une aiguille creuse (30) et un conduit de lumière (40) logé coaxialement à l'intérieur de l'aiguille creuse (30) et relié à une source lumineuse pour transmettre de la lumière dans le site chirurgical d'un patient. Le conduit de lumière possède une extrémité distale (43) comportant une face d'extrémité en forme (42) de segment circulaire et définie par un plan orienté orthogonal à l'axe de l'aiguille creuse (30), et une surface oblique (44) contiguë à la face d'extrémité (42) et s'étendant vers l'arrière à un angle aigu, la surface oblique (44) étant recouverte d'un revêtement permettant la réflexion des rayons de lumière incidents.

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