Patent ID: 7481834

Claim:
A prosthesis for placement at an ostium opening from a main body lumen to a branch body lumen; the main body lumen having a main vessel wall with a portion of the main vessel wall opposing the ostium, said prosthesis comprising: a radially expansible scaffold having at least a first wall pattern; and at least two circumferential anchors extending axially from an end of the scaffold, said anchors having sufficient length to extend into and bend and rotate and thereby expandably circumscribe the main vessel wall and reach the portion of the main vessel wall opposing the ostium when the scaffold is implanted in the branch lumen with said one end adjacent the ostium, said prosthesis additionally having a region with a second wall pattern that is different from the first wall pattern, said second wall pattern permitting the anchors to both bend and rotate relative to the prosthesis, such that a flow path is maintained in the main body lumen between the anchors and beyond the ostium opening.