Apparatus and methods for delivering a stent into an ostium

Details Apparatus and methods for delivering a stent into an ostium Apparatus and methods for delivering a stent into an ostium

A - Human Necessities

61

M

A61M 25/10 (2006.01) A61F 2/06 (2006.01)

Patent

CA 2609176

Apparatus and methods are provided for delivering a stent into an ostium. The apparatus includes a catheter including a proximal end, a distal end, and proximal and distal balloons disposed adjacent one another on the distal end. The balloons are expandable independently of one another, and a stent is provided surrounding the balloons. During use, the distal end of the catheter is introduced into a main lumen, and the proximal balloon is inflated to flare a proximal portion of the stent. The distal end is then advanced into the ostium until the flared proximal portion contacts a wall of the main lumen surrounding the ostium. The distal balloon is inflated to expand a distal portion of the stent, e.g., to dilate a lesion within the branch and/or ostium. Thereafter, the balloons are collapsed, and the apparatus is withdrawn, leaving the stent within the ostium.

L~invention concerne un appareil et des méthodes pour introduire un stent dans un ostium L'appareil inclut un cathéter comprenant une extrémité proximale, une extrémité distale et des ballons proximaux et distaux disposés l'un adjacent à l'autre sur l'extrémité distale. Les ballons sont dilatables indépendamment l'un de l'autre et un stent entoure les ballons. Durant l~utilisation, l'extrémité distale du cathéter est introduite dans une lumière principale et le ballon proximal est gonflé pour élargir une portion proximale du stent. L'extrémité distale est ensuite avancée dans l'ostium jusqu'à ce que la portion proximale élargie entre en contact avec une paroi de la lumière principale qui entoure l'ostium. Le ballon distal est gonflé pour dilater une portion distale du stent, par exemple, pour dilater une lésion dans la branche et/ou l'ostium. Par la suite, les ballons sont dégonflés et l'appareil est retiré, laissant le stent dans l'ostium.

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