Guide wire tip

A - Human Necessities – 61 – M

Patent

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Details

A61M 25/09 (2006.01) A61L 29/02 (2006.01) A61L 29/18 (2006.01) A61M 25/098 (2006.01)

Patent

CA 2307318

A guide wire tip including a core wire having a proximal end and a distal end. The core wire includes a tapered portion proximate the distal end. The tapered portion has a transverse, cross-sectional area which generally decreases distally. The tip is disposed at the distal end of the core wire. The tip has a transverse, cross-sectional area larger than the smallest transverse cross-sectional area of the tapered portion of the core wire. A coil extends over the core wire to the tip. The coil extends over at least a portion of the tapered portion. A radiopaque sheath is disposed proximate the tip and between the core wire and the coil.

Cette invention se rapporte à une pointe guide-fil, qui comprend un fil central faisant office d'âme, comportant une extrémité proximale et une extrémité distale. Ce fil central comprend une partie effilée à proximité de l'extrémité distale. Cette partie effilée possède une aire de section transversale qui décroît généralement en direction de l'extrémité distale. La pointe est disposée à l'extrémité distale du fil central. La pointe possède une aire de section transversale plus grande que la plus petite des aires de section transversale de la partie effilée du fil central. Un serpentin longe le fil central jusqu'à la pointe. Ce serpentin s'étend jusqu'à au moins une partie de la partie effilée. Une gaine opaque aux rayonnements est disposée à proximité de la pointe et entre le fil central et le serpentin.

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