Dialysis catheter tip

Details Dialysis catheter tip Dialysis catheter tip

A - Human Necessities

61

M

A61M 25/00 (2006.01)

Patent

CA 2555964

A catheter distal tip comprises first and second tip lumens which, in an operative configuration, are coupled to first and second catheter lumens. A first opening of the distal tip is connected to the first tip lumen for inflow of fluid in a normal mode of operation and for outflow of fluid in a reverse mode of operation. A second opening connected to the second lumen is disposed distally from the first opening separated therefrom by a selected stagger distance for outflow in the normal mode of operation and inflow in the reverse mode of operation. The distal tip also includes a contoured flow deflection element directing, in the reverse mode of operation, outflow from the first opening away from the second opening and a contoured outlet portion of the second opening reducing an outflow velocity therefrom in the normal mode of operation.

L'invention porte sur un embout distal de cathéter comprenant des premier et second lumens qui, dans une configuration fonctionnelle, sont couplés aux premier et second lumens. Un premier orifice de l'embout distal est raccordé au premier lumen afin que le fluide pénètre en mode de fonctionnement normal et qu'il sorte en mode de fonctionnement inverse. Un second orifice raccordé au second lumen est distant du premier orifice, le deux orifices étant séparés d'une distance de décalage sélectionnée pour la sortie du fluide en mode de fonctionnement normal et l'entrée du fluide en mode de fonctionnement inverse. L'embout distal comprend également un élément profilé de déviation de l'écoulement dirigeant, en mode de fonctionnement inverse, la sortie du fluide du premier orifice distant du second orifice et une partie profilée de l'orifice d'évacuation du second orifice réduisant le débit de sortie du fluide en mode de fonctionnement normal.

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