Catheter aperture with related structures and method

Details Catheter aperture with related structures and method Catheter aperture with related structures and method

A - Human Necessities

61

M

A61M 25/00 (2006.01)

Patent

CA 2590275

An elongate catheter shaft having a side port aperture through a side wall of the catheter shaft between proximal and distal ends of the shaft. The side port aperture is open to a lumen. Embodiments of the present invention are directed to stiffening structure disposed in the immediate vicinity of the side port aperture. The stiffening structures may be disposed on or be continuous with, for example, an exterior surface, an interior lumenal surface, within a wall of the catheter shaft, or some combination thereof. The stiffening structures described herein are directed to biasing the catheter shaft in the region of a side port aperture in a straight or curved configuration that resists undesired flexure in the region of the side port aperture.

Dans la présente invention, une tige de cathéter allongée comporte, à travers une paroi latérale, une ouverture formant orifice latéral entre ses extrémités proximale et distale. Ladite ouverture donne sur une lumière. Les modes de réalisation de la présente invention portent sur des structures de raidissement disposées à proximité immédiate de l~ouverture formant orifice latéral, sur la tige de cathéter ou dans le prolongement de celle-ci, par exemple sur une surface extérieure, une surface de la lumière intérieure, dans une paroi de la tige de cathéter, ou une combinaison quelconque de ces configurations. Les structures de raidissement décrites dans la présente invention sont destinées à incliner la tige de cathéter dans la région d~une ouverture formant orifice latéral en une configuration droite ou courbe résistant aux flexions involontaires dans ladite région.

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