Patent ID: 6059824
Filing Date: 2000-05-09
Classification: A61F

Abstract:
A stent assembly for treatment of arterial disease at an intersection between a main artery and a collateral artery, which comprises:a) a main stent comprising a body portion adapted to be positioned in the main artery and comprising a surrounding side wall defining a passageway extending to a first opening and a second opening, wherein when the main stent is positioned in the main artery, the passageway extending to the first opening and the second opening permits the flow of blood through the main artery;b) at least one lateral opening provided in the surrounding side wall of the body portion of the main stent and in fluid flow communication with the passageway extending to the first opening and the second opening;c) a main collar surrounding and defining the one lateral opening in the body portion of the main stent, wherein the main collar has at least two first locking device provided at spaced intervals about an annular extent of the main collar sized to be somewhat less than an opening of the collateral artery aligned with the at least one lateral opening in the main stent;d) a collateral stent adapted to be positioned in the collateral artery and comprising a surrounding side wall defining a passageway extending to a distal opening and a proximal opening, wherein when the collateral stent is positioned in the collateral artery, the passageway extending to the distal and proximal openings permits the flow of blood through the collateral artery; ande) a collateral collar surrounding and defining the proximal opening of the collateral stent, wherein the collateral collar has at least two second locking device provided at spaced intervals about an annular extent of the collateral collar corresponding to the position of the first locking device provided by the main collar of the main stent such that the collateral stent is mated and locked to the main stent with the first locking device engaged with the second locking device.