A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 2/06 (2006.01) A61B 17/122 (2006.01) A61F 2/24 (2006.01)
Patent
CA 2252894
An implantable support device that is applied externally about a vein at an incompetent venous valve site which device serves to flatten or compress but not occlude the vein. Flattening is induced generally normal to the coapting edges of the valve cusps restoring the competence of the valve by causing an elongating tension to be applied to the free edges of the cusps to bring them into apposition. In the preferred embodiment, the support has opposed compression members fabricated from a biocompatible material and incorporates a reinforcing or spring-like member such as stainless steel wire to provide strength and rigidity.
L'invention se rapporte à un dispositif de support implantable s'appliquant sur la périphérie externe d'une veine au niveau d'un site valvulaire défectueux du sinus veineux, ce dispositif servant à aplatir ou comprimer la veine, et non à l'obturer. L'aplatissement s'effectue généralement perpendiculairement aux bords de coaptation des cuspides valvulaires, rétablissant la capacité de la valvule sous l'effet d'une tension d'allongement appliquée sur les bords libres des cuspides, en vue de rapprocher ces derniers. Selon une réalisation préférée, le support comporte des éléments de compression opposés, fabriqués dans un matériau biocompatible, ainsi qu'un élément de renforcement ou de type ressort tel qu'un fil en acier inoxydable, conférant résistance et rigidité.
Boyce Barbara Lee
Zukowski Stanislaw L.
Gowling Lafleur Henderson Llp
W. L. Gore & Associates Inc.
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