Medical coupling site valve body

A - Human Necessities – 61 – M

Patent

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Details

A61M 39/02 (2006.01) A61M 39/04 (2006.01) A61M 39/22 (2006.01)

Patent

CA 2207754

The present invention provides a medical coupling site (210) which is adapted to be directly attached to a standard male luer fitting. The coupling site includes a valve element (216) contained within a tubular housing (214). The housing (214) is provided with a threaded portion for engaging the threaded locking collar of a male luer lock whereby the male luer lock will be held in positive mechanical locking engagement with the coupling site (210). The valve element (216) is provided with rib members (244, 246) extending inwardly from an inner wall of the valve elements (216) toward a slit (236) formed in a diaphragm (234) such that the rib members (244, 246) act to bias the slit (236) to a closed position. The housing (214) includes a flange extending radially inwardly over the diaphragm (234) and defining a diameter for frictionally engaging a male luer in locking engagement. In addition, an exposed surface (249, 251) of the diaphragm (234) is formed with surface texturing to define a roughened surface (249, 251). The roughened surface (249, 251) reduces the surface friction between the diaphragm (234) and a male luer as the luer is inserted through the diaphragm (234).

La présente invention se rapporte à un site d'accouplement (210) conçu pour être fixé directement sur un raccord mâle standard de Luer. Le site d'accouplement comprend un élément de valve (216) placé dans un corps tubulaire (214). Le corps (214) est pourvu d'une partie filetée permettant d'engager le collier de blocage fileté d'un raccord mâle de Luer. Ce dernier sera maintenu verrouillé mécaniquement sur le site de couplage (210). L'élément de valve (216) est pourvu de nervures (244, 246) s'étendant vers l'intérieur d'une paroi interne, en direction d'une fente (236) formée dans une membrane (234) de sorte que les nervures (244, 246) agissent sur la fente (236) pour la solliciter vers une position fermée. Le corps (214) comporte un rebord s'étendant radialement vers l'intérieur sur la membrane (234) et formant un diamètre qui permet d'engager par friction un raccord mâle de Luer dans une position de blocage. De plus, une surface exposée (249, 251) de la membrane (234) est obtenue par une structure qui forme une surface rugueuse (249, 251). La surface rugueuse (249, 251) réduit la friction entre la membrane (234) et un raccord mâle de Luer lorsque ce dernier est inséré dans la membrane (234).

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