Catheter for administering a liquid agent

A - Human Necessities – 61 – M

Patent

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Details

A61M 25/00 (2006.01) A61M 25/14 (2006.01)

Patent

CA 2218376

A catheter (10) for the administration of a liquid agent at a target site includes a catheter tube (11), a handle (12) and a conduit (13) that extends through a central volume formed in the handle. The catheter includes a guidewire lumen (22) and two parallel liquid agent transfer lumens (23 24). The conduit seals into the proximal end of the guidewire lumen and to the handle at a first entry port (30) and spans the central volume. The tube therefore prevents the transfer of any liquid agent into the guidewire lumen and provides a passageway for enabling the catheter to transfer over the guidewire. With two transfer lumens the catheter tube provides a maximum transfer flow rate while maintaining the ability of the catheter to resist kinking and bending.

L'invention concerne un cathéter (10) pour l'administration d'un agent liquide au niveau d'un site cible. Ce cathéter comporte un tube (11), un manche (12) et un conduit (13) qui traverse un volume central formé dans le manche. Ce cathéter comprend un canal intérieur (22) destiné au fil-guide et deux canaux intérieurs parallèles (23, 24) destinés au transfert de l'agent liquide. Le conduit assure l'étanchéité vis-à-vis de l'extrémité proximale du canal intérieur destiné au fil-guide et vis-à-vis du manche au niveau d'un premier orifice d'entrée (30), et traverse le volume central. Le tube empêche donc tout transfert d'agent liquide dans le canal intérieur destiné au fil-guide et assure un passage permettant au cathéter de glisser sur le fil-guide. Avec ces deux canaux intérieurs de transfert, le tube du cathéter assure un débit de transfert maximal tout en maintenant l'aptitude du cathéter à résister au coquage et au pliage.

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