Radiographic dye delivery apparatus and method

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/178 (2006.01) A61M 1/00 (2006.01)

Patent

CA 2204501

A method and apparatus for injecting radiographic dye during angiography, are provided. A deformable holding chamber (14) is interposed between a contrast dye bottle (12) and a syringe manifold (16). A one-way valve (36) and an integral disconnect/flow stop (28) are connected between the bottle (12) and the holding chamber (14). A vent (54) is provided in the holding chamber (14), with a second one-way valve (58). Squeezing and releasing the deformable chamber (14) fills the chamber (14) from the bottle (12). The holding chamber (14) contains a floating baffle (52) which acts as a shutoff valve by plugging the chamber outlet if the chamber (14) becomes empty. The syringe (50) is used to withdraw dye from the holding chamber (14). If dye remains in the bottle (12) after performance of the procedure, the disconnect/flow stop fitting (28) can be disconnected, and the dye can be saved.

L'invention se rapporte à un procédé et un appareil d'injection d'un colorant pour radiographie au cours d'une angiographie. Une chambre de retenue déformable (14) est intercalée entre la bouteille (12) de colorant de contraste et une tubulure de seringue (16). Un clapet de non retour (36) et un élément solidaire (28) de déconnexion/d'arrêt d'écoulement sont raccordés entre la bouteille (12) et la chambre (14). Un évent (54) prévu dans la chambre de retenue (14) comporte un second clapet de non retour (58). Lorsque la chambre déformable (14) est comprimée puis relâchée, elle se remplit du produit provenant de la bouteille (12). Ladite chambre (14) contient une chicane flottante (52) qui fait office de clapet d'arrêt en bouchant l'orifice de sortie de la chambre (14) si celle-ci se vide. La seringue (50) est utilisée pour extraire du colorant de la chambre de retenue (14). Si du colorant reste dans la bouteille (12) après la procédure, l'élément de déconnexion/d'arrêt d'écoulement (28) peut être déconnecté et le colorant récupéré.

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