Medical device in the form of a catheter for supplying fluid...

A - Human Necessities – 61 – M

Patent

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A61M 25/06 (2006.01)

Patent

CA 2704668

The invention relates to a medical device that is in the form of a catheter (3) for supplying fluid to but in particular removing fluid from body cavities. The catheter head (1) on the proximal end (4) comprises an inlet (5) that is provided with one or more sealing and/or blocking elements (6, 7) and that is used to introduce a hollow or Verres needle (18) into the catheter (3). In the region between the sealing or blocking element(s) and the region of the catheter shaft (2) that is introduced into the body, a branch connection (8) is arranged, said branch connection being connected to a suction pump arrangement (10) via a branch tube (9). Said branch tube (9) leads to a suction valve (11) that enables a fluid to flow in the direction of the suction device, but blocks the flow in the counter direction. The outlet of the suction valve (11) opens into a forked area (12), from which one branch (16) leads to a suction device connection, in particular an injection connection (13) that is embodied, preferably, as a Luer-lock, and the other branch thereof (17) leads to a secretion bag connection (14). A non-return valve (15) that blocks the return flow of the secretion bag is arranged between said branch (17) and the secretion bag connection (14).

La présente invention concerne un appareil médical sous forme d'un cathéter (3) conçu pour administrer, mais notamment pour évacuer un fluide dans des cavités corporelles, notamment hors des cavités corporelles. La tête (1) du cathéter présente à son extrémité proximale (4) un orifice d'entrée (5) qui comporte un ou plusieurs éléments d'étanchéité et/ou d'arrêt (6, 7) et qui est conçu pour permettre l'introduction d'une canule ou d'une aiguille de Verres (18) dans le cathéter (3). Un raccord de dérivation (8) est placé dans la zone située entre le ou les éléments d'étanchéité et/ou d'arrêt (6, 7) et la région de la tige de cathéter (2) conçue pour être introduite dans le corps, lequel raccord est raccordé à un dispositif de pompe aspirante (10) par le biais d'un tuyau de dérivation (9). Le tuyau de dérivation (9) conduit à une soupape d'aspiration (11) qui permet la circulation d'un fluide en direction d'un système d'aspiration, mais qui bloque la circulation dans le sens inverse. L'orifice de sortie de la soupape d'aspiration (11) débouche sur un embranchement (12) duquel part une branche (16) menant à un raccord du système d'aspiration conçu de préférence sous forme de raccord Luer, notamment un raccord d'injection (13), et une autre branche (17) menant à un raccord de poche à sécrétion (14). Un clapet antiretour qui empêche un reflux de la poche à sécrétion est placé entre la branche (17) et le raccord de poche à sécrétion (14).

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