Apparatus for evacuation of root canal

A - Human Necessities – 61 – C

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A61C 17/14 (2006.01) A61G 5/02 (2006.01) A61M 1/00 (2006.01)

Patent

CA 2570014

In an endodontic procedure, after the working of a root canal by instruments to remove material and shape the walls of the canal, irrigant is supplied via a microcannula. A vacuum is applied via a tube which is inserted partway down the root canal. The tube and microcannula pass through a material created by a standard dental filling material of a composite nature which provides a seal at a position near the top of the coronal opening. The irrigant is supplied in a manner sufficient to ensure delivery to a side vent of the microcannula. The vacuum at the end of tube draws the irrigant and debris up from the apex of the root canal into the tube. The side vent may have a plurality of more round holes, a diagonal slit, or a U shaped slit, or any other shape. The vent opening should not extend more than approximately .75 mm from the closed spherical tip of the microcannula, it must be burr free and the opening must be smaller than the internal diameter of the microcannula.

Dans une procédure endodontique, après le traitement d'un canal au moyen d'instruments pour l'évacuation de matériau et pour la formation des parois, on apporte un agent d'irrigation via une microcanule. Un tube à vide est inséré en partie dans le canal, et ce tube et cette canule traversent le matériau d'un amalgame classique de nature composite qui obture la cavité près du haut de l'ouverture coronale. L'agent est fourni en quantité suffisante pour assurer la délivrance à une ouverture latérale de la canule. Le tube à vide permet d'aspirer l'agent et les débris depuis le sommet du canal. L'ouverture latérale de la canule peut avoir plusieurs trous ronds, une fente en diagonale, ou en forme de U, ou autre. Elle ne doit pas s'étendre sur plus d'environ 0,75 mm depuis l'extrémité sphérique fermée de la canule, elle doit être dépourvue de fraise, et elle doit être inférieure au diamètre interne de la canule.

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