Methods and systems for treating obstructions in a body lumen

Details Methods and systems for treating obstructions in a body lumen Methods and systems for treating obstructions in a body lumen

A - Human Necessities

61

B

A61B 17/22 (2006.01) A61B 17/00 (2006.01)

Patent

CA 2309428

A system is provided having a catheter (32), a torque member (52) extending longitudinally through a lumen (50) of the catheter (32), a removal mechanism (54) secured to a distal end of the torque member (52), and a guide wire (46) having a guide section (200) that extends through a lumen of the removal mechanism (54). The guide section (200) defines a curved profile that is diametrically larger than the dimension of the removal mechanism (54). The guide section (200) of the guide wire (46) is adapted to be positioned inside a passageway of the occluding material providing a curved path along which the removal mechanism (54) can be advanced inside the passageway of the occluding material to separate, and remove occluding material. Methods of using the system, making the guide wire (46), and a perfusion wire system are also disclosed.

L'invention concerne un système comprenant un cathéter (32), un élément (52) de couple qui s'étend longitudinalement à travers la lumière (50) du cathéter (32), un mécanisme (54) d'évacuation fixé à l'extrémité distale de l'élément (52) de couple, et un fil-guide (46) présentant un section (200) guide qui s'étend à travers une lumière du mécanisme (54) d'évacuation. La section (200) guide présente un profil courbe d'un diamètre supérieur à la dimension du mécanisme (54) d'évacuation. La section (200) guide du fil-guide (46) est conçue pour être placée dans un passage traversant le matériau d'occlusion de manière à aménager un cheminement courbe le long duquel on peut avancer le mécanisme (54) d'évacuation dans le matériau d'occlusion afin de fractionner et d'évacuer ce dernier. L'invention concerne également des procédés d'utilisation de ce système et de fabrication du fil-guide (46) ainsi qu'un système de fil de perfusion.

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