Atherectomy device having trapping and excising means for...

A - Human Necessities – 61 – B

Patent

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A61B 17/00 (2006.01) A61B 17/22 (2006.01) A61B 17/32 (2006.01) A61B 17/50 (2006.01) A61F 2/01 (2006.01) A61M 25/01 (2006.01) A61B 10/00 (2006.01) A61B 17/30 (2006.01) A61M 25/00 (2006.01)

Patent

CA 2261111

An arterial catheter system for removing plaque from the aorta and other arteries is disclosed. The system typically includes an elongate catheter member (50), a filtration apparatus (69) disposed within the distal region, and an atherectomy assembly (80). The atherectomy assembly includes a mechanism (82) for trapping and holding mobile or fixed plaque and an excising mechanism (81) for removing the plaque. In use, the catheter is positioned so that the atherectomy assembly lies within a region of interest, the filtration apparatus is deployed downstream of the region of interest, the plaque is trapped and held by a snare (273), vacuum, or some other trapping mechanism, and then the excising mechanism is activated to remove the plaque. Methods are also disclosed for removing plaque from the aorta and other arteries.

Système de cathéter artériel pour extraire la plaque athéromateuse présente dans l'aorte et d'autres artères, comprenant généralement un cathéter allongé, un dispositif de filtrage au niveau de la région distale, et un ensemble d'athérectomie avec un mécanisme de préhension et d'immobilisation de la plaque, mobiles ou fixes et un mécanisme d'extraction de la plaque. En fonctionnement, le cathéter est placé de sorte que l'ensemble se trouve dans la région visée, le dispositif de filtrage étant déployé en aval de la région. Ensuite, la plaque est saisie et maintenue à l'aide d'une anse ou par dépression ou un autre moyen d'immobilisation, puis le mécanisme d'excision entre en action pour l'extraire. On décrit aussi des procédés relatifs à l'extraction de la plaque présente dans l'aorte et d'autres artères.

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