A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 25/00 (2006.01)
Patent
CA 2343172
A tubing assembly and method of manufacture for a catheter having an inner tubular member defining a lumen, an outer tubular member surrounding said inner member, and a braid mounted between the tubular members to provide rigidity to the flexible catheter. The braid preferably has different braid densities in selected regions along the length of the catheter. In addition, the outer tubular member preferably includes a number of segments each having different mechanical properties. In this configuration, both the polymer characteristics and the braid density may be independently varied along the length of the catheter to maximize catheter performance.
L'invention concerne un ensemble de tube, et un procédé de fabrication de cathéter comprenant un élément tubulaire intérieur définissant une lumière, un élément tubulaire extérieur entourant ledit élément intérieur, une tresse montée entre les éléments tubulaires afin d'augmenter la rigidité du cathéter souple. La tresse présente, de préférence, des densités différentes dans des régions sélectionnées sur la longueur du cathéter. En outre, l'élément tubulaire extérieur comprend, de préférence, un certain nombre de segments, chacun d'eux possédant des propriétés mécaniques différentes. Dans cette configuration, les caractéristiques du polymère et la densité de la tresse peuvent varier indépendamment sur la longueur de cathéter afin d'augmenter l'efficacité du cathéter.
Boston Scientific Limited
Cassan Maclean
Scimed Life Systems Inc.
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