Veress needle and cannula assembly

Details Veress needle and cannula assembly Veress needle and cannula assembly

A - Human Necessities

61

B

A61B 17/34 (2006.01) A61M 39/02 (2006.01)

Patent

CA 2218073

A Veress needle (50) and cannula assembly (10) includes a stainless steel cannula assembly (10) with a cannula (12) having an outer diameter of approximately 4 mm and a Veress needle assembly having a Veress needle with an outer diameter of approximately 3 mm. The cannula assembly includes a proximal valve assembly (14) and the Veress needle is insertable through the valve assembly (14). Where the cannula and Veress needle are not closely fitted, a molded transition collar (74) on the Veress needle seals the annular space between the interior of the cannula and the exterior of the Veress needle and is provided with sharp distal edges (80a, 82a, 84a) for aiding insertion of the cannula assembly into the body of a patient. The cannula valve assembly preferably includes a female luer lock connector (36). The Veress needle preferably includes a handle (56) with a rotatable male luer lock coupler (72) which engages the female luer lock connector on the cannula valve assembly when the Veress needle is inserted into the cannula assembly.

Aiguille Veress (50) et ensemble canule (10) comportant un ensemble canule (10) en acier inoxydable comprenant une canule (12) dont le diamètre extérieur mesure environ 4 mm, et un ensemble aiguille Veress comprenant une aiguille Veress d'un diamètre extérieur d'environ 3 mm. L'ensemble canule comprend un ensemble valve proximal (14) dans lequel on peut insérer l'aiguille Veress. Lorsque la canule et l'aiguille Veress ne sont pas ajustées serrées, une bague intermédiaire moulée (74) placée sur l'aiguille Veress bloque l'espace annulaire existant entre l'intérieur de la canule et l'extérieur de l'aiguille Veress, cette bague intermédiaire comprenant des extrémités distales pointues (80a, 82a, 84a) qui facilitent l'insertion de l'ensemble canule dans le corps d'un patient. L'ensemble valve de la canule comprend de préférence un dispositif de raccordement femelle (36) à verrouillage luer. L'aiguille Veress comporte de préférence un manche (56) équipé d'un dispositif de couplage mâle (72) du type luer-lock qui s'associe au dispositif de raccordement femelle (36) à verrouillage luer situé sur l'ensemble valve de la canule lorsque l'aiguille Veress est insérée dans l'ensemble canule.

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