Axially nested slide and lock expandable device

Details Axially nested slide and lock expandable device Axially nested slide and lock expandable device

A - Human Necessities

61

F

A61F 2/92 (2006.01)

Patent

CA 2615708

The invention relates generally to expandable medical implants for maintaining support of a body lumen and, in particular, to an axially nested, diametrically expandable, slide and lock vascular device for enlarging an occluded portion of a vessel. The axially nested vascular device desirably achieves both competitive crossing profiles while maintaining other key features, such as, for example, radial strength and luminal patency. The collapsed profile can also be made very thin without compromising radial strength. Thus, the vascular device can advantageously be deployed in small and difficult to reach areas or vessels. The axial nesting substantially eliminates radial overlap between mating structural elements thereby desirably allowing for a low, uniform profile.

La présente invention concerne en général des implants médicaux extensibles pour assurer le soutien d'une cavité du corps et, en particulier, un dispositif vasculaire emboîté axialement, au diamètre extensible, coulissant et blocable pour agrandir une partie obstruée d'un vaisseau. Le dispositif vasculaire emboîté axialement réalise de préférence deux profils transversaux en concurrence tout en conservant d'autres fonctionnalités essentielles, telles que, par exemple, la résistance radiale et la perméabilité luminale. Le profil contracté peut également être rendu très fin sans compromettre la résistance radiale. Ainsi, le dispositif vasculaire peut avantageusement être déployé dans des zones ou vaisseaux de petite dimension et difficiles d'accès. L'emboîtement axial élimine sensiblement la superposition radiale entre les éléments structuraux en contact, ce qui permet d'obtenir de préférence un profil bas et uniforme.

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