Nasolacrimal system surgical tool and method

A - Human Necessities – 61 – F

Patent

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Details

A61F 9/007 (2006.01) A61M 1/00 (2006.01)

Patent

CA 2659829

A device and method for performing probing, irrigation, suction and intubation of the nasolacrimal system to treat for stenosis or obstruction includes a tubular probe (47) through which a tracer fluid is injected and collected in the nasal cavity to verify that the tip of the probe has passed through an obstruction and reached the nasal cavity. A sleeve (43) fitted over the probe has distal segment (44) that is inflated in order to retain the sleeve in the nasolacrimal system once the tubular probe has been withdrawn. Removal of blood and other obstructions encountered during the probing or intubation process is accomplished by connecting the proximal end of the probe to a suction device. An alternate embodiment provides a tool combining two elongated conduits, one of which is terminated at a distal end by an inflatable balloon. The other conduit is used for either "irrigating or suctioning. The tool is particularly useful to perform dacryocystoplasty (DCP) and dacryocystorhinostomy (DCR).

L'invention concerne un dispositif et un procédé de réalisation de sondage, d'irrigation, d'aspiration et d'intubation du système nasolacrymal pour traiter une sténose ou une obstruction. Le dispositif comprend une sonde tubulaire (47) à travers laquelle un fluide traceur est injecté et recueilli dans la cavité nasale pour vérifier si la pointe de la sonde a traversé une obstruction et atteint la cavité nasale. Une gaine (43) placée sur la sonde a un segment distal (44) qui est gonflé pour retenir la gaine dans le système nasolacrymal lorsque la sonde tubulaire a été retirée. Le raccordement de l'extrémité proximale de la sonde avec un dispositif d'aspiration permet d'enlever le sang et d'autres éléments obstruants rencontrés pendant le processus de sondage ou d'intubation. Dans un autre mode de réalisation, l'invention concerne un instrument combinant deux conduits allongés, un ayant une extrémité distale terminée par un ballonnet gonflable et l'autre conduit servant à l'irrigation ou à l'aspiration. Cet instrument est particulièrement utile pour réaliser une dacryocystoplastie (DCP) et une dacryocystorhinostomie (DCR).

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