Medical guidewire with fully hardened core

Details Medical guidewire with fully hardened core Medical guidewire with fully hardened core

A - Human Necessities

61

M

A61M 25/09 (2006.01) A61B 5/00 (2006.01) A61B 6/00 (2006.01) A61M 25/00 (2006.01) A61M 25/01 (2006.01)

Patent

CA 2242570

This invention is a guidewire (10) comprising an elongated core element (12) manufactured from a martensitic alloy that is heat-treated to render a fully hardened core throughout its cross sectional area. The core element (12) has a constant taper or step-down decreasing cross-sectional area in a direction towards the distal end (24) which is fully hardened throughout its longitudinal length. A single coil, or two coils (32, 36) are carried by and secured to said core element (12) near the distal end (24).

L'invention concerne un fil-guide (10) comprenant une âme de forme allongée (12) en alliage martensitique traité thermiquement afin d'obtenir une âme entièrement durcie dans toute la superficie de sa section. L'âme (12) possède une superficie de section décroissante à conicité ou réduction par paliers constants vers l'extrémité distale (24), laquelle est entièrement durcie sur toute sa longueur. Un seul enroulement ou deux enroulements (32, 36) sont portés par ladite âme et fixées à celle-ci près de l'extrémité distale (24).

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