Catheter slit valves

A - Human Necessities – 61 – M

Patent

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Details

A61M 25/00 (2006.01)

Patent

CA 2443769

Disclosed are improved catheter slit valves for medical fluid infusion and aspiration. The improved catheter slit valves use nonradial slits to address the problems found with conventional radial slit valves. The improved catheter slit valves also use radial and nonradial slits in combination with each other, protuberances, and caps to enhance the operation of the valves. Also disclosed are catheters with multiple slit valves, compound slit valves, multiple lumens, or combinations thereof. The catheters disclosed are made of biocompatible materials, such as polyurethanes, silicones, polyethylenes, nylons, polyesters, and polyester elastomers.

L'invention concerne des valves fendues améliorées de cathéter destinées à des infusion et aspiration de fluide médical. Les valves fendues améliorées de cathéter mettent en oeuvre des fentes non radiales, de manière à résoudre les problèmes rencontrés avec les valves à fente radiale classiques. Les valves fendues améliorées de cathéter mettent également en oeuvre des fentes radiales et non radiales en combinaison les unes avec les autres, des protubérances et des capuchons, de manière à améliorer le fonctionnement des valves. L'invention concerne également des cathéters comprenant plusieurs valves fendues, des valves fendues composées, plusieurs lumières ou des combinaisons de ces éléments. Les cathéters selon l'invention sont conçus dans des matériaux biocompatibles, tels que des polyuréthannes, des silicones, des polyéthylènes, des nylons, des polyesters et des élastomères polyester.

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