Tube for medical purposes

Details Tube for medical purposes Tube for medical purposes

B - Operations, Transporting

32

B

B32B 25/14 (2006.01) B32B 1/08 (2006.01) B32B 25/08 (2006.01) F16L 11/04 (2006.01)

Patent

CA 2647084

The invention relates to a PVC-free tube (100) for medical purposes, comprising three superimposed layers (101, 102, 103). Each of said layers contains a polyolefin while the inner layer (102) additionally contains at least 60 percent of a thermoplastic elastomer. The invention further relates to a tube system encompassing several inventive tubes which are joined together via connectors. The disclosed tube allows the flow rate loss, e.g. in an extracorporeal circulatory system, to be kept below 15 percent, preferably below 10 percent.

L'invention concerne un tuyau flexible sans PVC (100), destiné à une utilisation médicale, comportant trois couches superposées (101,102, 103), chaque couche contenant une polyoléfine. La couche intérieure (102) contient par ailleurs au moins 60 % d'un élastomère thermoplastique. L'invention concerne également un système de tuyaux flexibles comportant plusieurs tuyaux flexibles connectés au moyen de connecteurs. Le tuyau flexible selon l'invention permet de maintenir la perte de vitesse de transport, par exemple dans un circuit sanguin extracorporel, à un niveau inférieur à 15 %, de préférence inférieur à 10 %.

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