A catheter for injecting fluid or medicine

A - Human Necessities – 61 – M

Patent

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Details

A61M 25/00 (2006.01) A61B 18/24 (2006.01) A61N 1/05 (2006.01) A61B 17/22 (2006.01) A61B 18/22 (2006.01)

Patent

CA 2184388

An injection catheter including a catheter stem, a cathetertip, and a bundle of injection needles, wherein either the catheter tip is axially displaceable relative to the catheter shaft or the catheter tip is fixedly connected to the catheter stem and the bundle of injection needles is longitudinally displaceable relative to the catheter tip. The catheter tip may take various forms, as the injection needles within the catheter stem may take various forms and may be guided in various ways. An operating device is provided for effecting relative movements between the injection needles and the catheter tip, which operating device comprises two parts that are controllably displaceable relative to one another, thereby to cause the injection needles to be exposed or retracted. The operating device also includes inlets allowing medication to be applied through the injection needles.

Dans un cathéter, un faisceau d'aiguilles d'injection peut se déplacer par rapport à la pointe du cathéter. La pointe du cathéter est axialement déplacée par rapport à la tige du cathéter, ou, lorsque la pointe du cathéter est fixée à la tige du cathéter, le faisceau d'aiguilles d'injection se déplace dans le sens longitudinal. La pointe du cathéter peut prendre des formes diverses et la forme et les aiguilles d'injection à l'intérieur de la tige du cathéter peuvent aussi varier et être guidées de différentes façons. Afin de déplacer les aiguilles d'injection par rapport à la pointe du cathéter, un dispositif d'actionnement commande l'extension et le retrait des aiguilles d'injection par déplacement contrôlé de deux pièces mobiles l'une par rapport à l'autre et permet en même temps d'introduire des médicaments par l'intermédiaire de raccords d'amenée de médicaments.

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