Vascular dilatation device and method

Details Vascular dilatation device and method Vascular dilatation device and method

A - Human Necessities

61

M

A61M 29/00 (2006.01) A61M 25/10 (2006.01) A61M 29/02 (2006.01) A61F 2/00 (2006.01) A61F 2/06 (2006.01)

Patent

CA 2207211

The present invention is a vascular dilatation device (11) for enlarging a passage in an obstruction in a vessel carrying flowing blood. A flexible cylindrical dilatation member (86) having first and second ends (87, 88) with an intermediate portion (86c) therebetween is disposed in the obstruction. The flexible cylindrical dilatation member (86) has a flow passage with a diameter and a longitudinally extending axis extending therethrough. The diameter of the flow passage is variable with movement of the first and second ends (87, 88) relative to each other along the longitudinally extending central axis from a contracted position to an expanded condition. The flexible cylindrical dilatation member is comprised of flexible elongate elements (36) extending helically about the longitudinally extending central axis.

La présente invention concerne un dispositif de dilatation vasculaire (11) destiné à élargir un passage dans une obstruction à l'intérieur d'un vaisseau de transport de flux sanguin. Un membre de dilatation (86) cylindrique et flexible pourvu d'une première et d'une seconde extrémité (87, 88) de part et d'autre d'une partie intermédiaire (86c) est placé dans l'obstruction. Ce membre de dilatation cylindrique et flexible comporte un passage pour l'écoulement dont le diamètre et l'axe longitudinal d'étendent de part en part. Le diamètre de ce passage varie avec le déplacement des première et seconde extrémités (87, 88) l'une par rapport à l'autre, le long de l'axe central longitudinal entre une position contractée et une position déployée. Ledit membre de dilatation cylindrique et flexible est constitué d'éléments flexibles allongés (36) disposés de manière hélicoïdale autour de l'axe central longitudinal.

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