Kourenkov's cannula used for a method for an operation of...

A - Human Necessities – 61 – F

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Details

A61F 9/008 (2006.01) A61F 9/01 (2006.01) A61F 9/013 (2006.01)

Patent

CA 2369149

The invention relates to medical instruments and can be used for an operation of refractory-correlating eximer-laser intrastromal keratectomy (REIK). The inventive cannula comprises a hollow body, a curved working part, side channels and a cavity connected to the hollow body. The side channels are used for instillating and/or irrigating the cornea flap while performing the refractory-correlating eximer-laser intrastromal keratectomy (REIK). Longitudinal axes of the side channels are placed across a plane of the working part bending and oriented angle-wise or angles-wise with respect to the longitudinal axis of the working part. The working part has a tapered end for facilitating its introduction and/or a separation of tissues. The body and/or the working part are embodied with equal cross-sections and/or with cross-sections whose shapes differ from each other.

L'invention relève des instruments médicaux et peut être utilisée lors des opérations de kératectomie photoréfractive intrastromale par laser excimère. Elle se rapporte à une canule comprenant un corps creux et une partie active incurvée qui comporte des canaux latéraux et une cavité communicant avec la cavité du corps, les canaux latéraux étant conçus pour l'instillation et/ou le lavage de l'espace sous le volet cornéen lors d'une opération de kératectomie photoréfractive intrastromale par laser excimère. Les axes longitudinaux des canaux latéraux sont perpendiculaires au plan de courbure de la partie active et orientés sous un ou plusieurs angles par rapport à l'axe longitudinal de ladite partie active. Cette partie active comporte une extrémité conique destinée à l'introduction et/ou à la séparation de tissus. Le corps et/ou la partie active ont des coupes transversales identiques et/ou de formes différentes.

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