Catheter and method for producing the same

Details Catheter and method for producing the same Catheter and method for producing the same

A - Human Necessities

61

M

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

Patent

CA 2452510

The present invention concerns a catheter with a hollow fiber membrane (10) bent essentially in U-shape or such a hollow fiber membrane (10) comprising two legs (11, 13) and a bent section (15). According to the invention the hollow fiber membrane (10) is heat-treated and/or treated with at least one solvent in its bent section (15). The catheter according to the invention has a small overall diameter, is simple to manufacture and easy to implant and explant. The bent section (15) does not kink so that the lumen remains open. The present invention also concerns a method for producing such a catheter or such a hollow fiber membrane.

L'invention concerne un cathéter comprenant une membrane en fibre creuse (10) pratiquement recourbée en U, et respectivement une membrane en fibre creuse (10) présentant deux branches (11, 13) et une zone courbe (15). Selon l'invention, la membrane en fibre creuse (10) est traitée thermiquement ou est traitée à l'aide d'au moins un solvant au moins au niveau de sa zone courbe (15). Le cathéter selon l'invention présente un diamètre total faible, est facile à produire ainsi qu'à implanter ou explanter. Aucune pliure ne se forme dans la zone courbe (15) et la lumière n'est pas obturée. L'invention concerne également un procédé pour la production d'un tel cathéter et respectivement d'une telle membrane en fibre creuse.

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