Importance

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Abstract

A bifurcated intravascular stent graft comprises primary stent segments and a primary graft sleeve, forming a main fluid channel and having a side opening therethrough. An internal graft channel formed within the primary graft sleeve has an inner open end within the primary graft sleeve and an open outer end communicating with the side opening, thereby providing a branch flow channel from the main channel out through the side opening. The primary stent segments and graft sleeve engage an endoluminal surface of a main vessel and form substantially fluid-tight seals. The stent graft further comprises a secondary stent graft, which may be positioned partially within the internal graft channel, through the side opening, and partially within a branch vessel. The secondary stent graft engages then inner surface of the internal graft channel and the endoluminal surface of the branch vessel, thereby forming substantially fluid-tight seals.

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First Claim