Helical mesh endoprosthesis and methods of use

Details Helical mesh endoprosthesis and methods of use Helical mesh endoprosthesis and methods of use

A - Human Necessities

61

F

A61F 2/06 (2006.01) A61F 2/86 (2006.01)

Patent

CA 2283728

A stent comprising a helical mesh coil is provided having a substantially rectangular cross section and a band width equal at least as great as a minimum contracted delivery diameter of the stent. The helical mesh has a multiplicity of openings forming a lattice that preferably provides about 60 % open space or more. Alternative embodiments of the stent include free ends that preferentially overlap neighboring turns of the coil, and integrally formed barbs that enhance resistance to localized compressive forces. Methods of deploying the helical mesh coil stent is also provided.

Extenseur composé d'un enroulement spiralé de mailles et possédant une section transversale sensiblement rectangulaire, ainsi qu'une largeur de bande égale au moins au diamètre de pose de l'extenseur contracté au minimum. Cet ensemble de mailles présente une multiplicité d'ouvertures constituant un treillis dont l'espace ouvert est égal à environ 60 %. Dans d'autres modes de réalisation, l'extenseur comporte des extrémités libres chevauchant, de préférence, les tours contigus de l'enroulement, ainsi que des pointes solidaires de l'ensemble amplifiant la résistance à des forces de compression localisées. Procédés permettant de déployer cet extenseur.

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