Endovascular device with membrane

Details Endovascular device with membrane Endovascular device with membrane

A - Human Necessities

61

F

A61F 2/06 (2006.01)

Patent

CA 2642250

An endovascular device (10) for insertion into a bodily vessel (5) to treat a diseased, damaged or weakened portion of a vessel wall (50), the endovascular device (10) comprising: a mechanically expandable device (11) expandable from a first position to a second position, said mechanically expandable device (11 ) is expanded radially outwardly to the second position such that the circumferential surface of said mechanically expandable device (11 ) engages with the inner surface of the vessel (5) so as to maintain a fluid pathway through said vessel (5); and a membrane (20) covering at least a portion of the circumferential surface of said mechanically expandable device (11), the membrane (20) comprising a plurality of pores (25), the porosity of the membrane (20) being defined by the ratio of the material surface area of the membrane (20) determined by the size of the pores (21 ) and the distance between adjacent pores (22, 23); wherein the mechanically expandable device (10) is positioned in the bodily vessel (5) such that the membrane (20) covers at least the diseased, damaged or weakened portion of the vessel wall (50), the porosity of the membrane (20) obstructing blood supply to the diseased, damaged or weakened portion of the vessel wall (50) and enhancing healing of the bodily vessel (5).

L'invention concerne un dispositif endovasculaire (10) pour introduction dans un vaisseau corporel (5) pour traiter une partie morte, endommagée ou affaiblie d'une paroi de vaisseau (50), le dispositif endovasculaire (10) comprenant : un dispositif extensible mécaniquement (11) extensible d'une première position à une seconde position, ledit dispositif extensible mécaniquement (11) étant déployé radialement vers l'extérieur vers la seconde position de telle sorte que la surface circonférentielle dudit dispositif extensible mécaniquement (11 ) s'engage dans la surface interne du vaisseau (5) de façon à maintenir un circuit de fluide à travers ledit vaisseau (5); et une membrane (20) couvrant au moins une partie de la surface circonférentielle dudit dispositif extensible mécaniquement (11), la membrane (20) comprenant une pluralité de pores (25), la porosité de la membrane (20) étant définie par le rapport de la superficie de matériau de la membrane (20) déterminée par la taille des pores (21) sur la distance entre des pores adjacents (22, 23); ledit dispositif extensible mécaniquement (10) étant positionné dans le vaisseau corporel (5) de telle sorte que la membrane (20) recouvre au moins la partie morte, endommagée ou affaiblie de la paroi de vaisseau (50), la porosité de la membrane (20) bloquant l'arrivée de sang à la partie morte, endommagée ou affaiblie de la paroi de vaisseau (50) et améliorant la cicatrisation du vaisseau corporel (5).

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