Fistula grafts and related methods and systems for treating...

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/00 (2006.01) A61L 27/36 (2006.01)

Patent

CA 2637450

Described are medical graft products, systems, and methods for treating fistulae. Certain products of the invention are configured to have portions residing in and around a primary fistula opening, e.g., one occurring in a wall of the alimentary canal. One such product includes a biocompatible graft body which is configured to block at least the primary opening. The graft body includes a capping member (280), which is configured to contact portions of the alimentary canal wall adjacent to the primary opening, and an elongate plug member (282) extending from the capping member, which is configured to extend into at least a portion of the fistula. In certain embodiments, a graft body component has the capacity to expand or otherwise change form to provide a suitable capping arrangement. Such a component can include a resilient wire frame, e.g., one that is self -expandable or one that requires at least some manipulation in order to expand.

L'invention concerne des produits de greffons médicaux, des systèmes et des procédés pour traiter des fistules. Certains produits de l'invention sont configurés pour avoir des parties résidant dans et autour d'une ouverture de fistule principale, par exemple une se produisant dans une paroi du tube digestif. Un produit de ce type comprend un corps de greffon biocompatible qui est configuré de manière à obstruer au moins l'ouverture principale. Le corps de greffon comprend un élément de coiffe qui est configuré pour entrer en contact avec des parties de la paroi du tube digestif adjacentes à l'ouverture principale, et un élément de bouchon allongé s'étendant à partir de l'élément de coiffe, qui est configuré pour s'étendre dans au moins une partie de la fistule. Dans certains modes de réalisation, un composant de corps de greffon a la capacité de se dilater ou autrement de changer de forme de manière à fournir un arrangement de coiffe adapté. Un composant de ce type peut comprendre un cadre de fil métallique résilient, par exemple un qui est auto-dilatable ou un qui nécessite au moins une certaine manipulation afin de se dilater.

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