An intravascular device with improved radiopacity

A - Human Necessities – 61 – L

Patent

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Details

A61L 31/18 (2006.01) A61F 2/82 (2006.01) A61F 2/84 (2006.01) A61L 31/02 (2006.01)

Patent

CA 2364725

A stent having marker tabs formed from a micro-alloyed combination of materials provides for more precise placement and post-procedural visualization in a vessel, by increasing the radiopacity of the stent under X- ray fluoroscopy. A unique micro-alloying process is utilized to form the tabs, comprising a first alloy and a second alloy, wherein one of these alloys is radiopaque. This substantially eliminates the possibility of galvanic action between the tab and the stent. This process is also applicable to other medical devices.

Une endoprothèse possédant des languettes de marquage faites d'un micro-alliage de matériaux permet un positionnement plus précis que dans le cas d'autres endoprothèses, ainsi que la visualisation de la prothèse dans le vaisseau après l'opération, grâce à l'accroissement de la radio-opacité de l'endoprothèse en fluoroscopie à rayons X. Pour fabriquer les languettes, on emploie un procédé unique de micro-alliage, comprenant un premier alliage puis un second alliage, l'un d'eux étant radio-opaque. On élimine ainsi, en grande partie, le risque d'action galvanique entre la languette et l'endoprothèse. Ce procédé est également applicable à d'autres dispositifs médicaux.

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