Methods and systems for performing vitrectomy with...

A - Human Necessities – 61 – F

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A61F 9/007 (2006.01) A61F 2/00 (2006.01) A61F 13/00 (2006.01) A61L 27/00 (2006.01) A61M 5/14 (2006.01)

Patent

CA 2479023

A method and system for continuous infusion of a dense fluid (e.g., a perfluorocarbon) during performance of a vitrectomy procedure. A vitrectomy cutter device is used to remove vitreous humor from the posterior chamber of the eye and a continuous flow of the dense fluid is infused in the posterior chamber concurrently with the removal of the vitreous through the vitrectomy cutter device. In a recirculating embodiment, a re-circulation loop is formed whereby particles of vitreous removed from the eye are filtered out and the dense fluid is then recirculated back into the posterior chamber of the eye. The dense fluid may be oxygenated before entering the eye.

Procédé et système destinés à l'infusion en continu d'un fluide dense (p. ex., d'un perfluorocarbone) lors d'une opération de vitrectomie. Un dispositif de coupe pour vitrectomie est utilisé afin d'évacuer l'humeur vitreuse de la chambre postérieure de l'oeil et un flux continu du liquide dense est infusé dans la chambre postérieure parallèlement à l'évacuation de l'humeur vitreuse à travers le dispositif de coupe pour vitrectomie. Dans un mode de réalisation à recirculation, une boucle de recirculation est formée en parallèle, dans laquelle des particules de l'humeur vitreuse depuis l'oeil sont filtrées, puis le liquide dense est recirculé en direction de la chambre postérieure de l'oeil. Le fluide dense peut être oxygéné avant de pénétrer dans l'oeil.

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