TIPPETT, JONATHAN G.,FUNG, ERIC SOUN-SANG,RICCI, DONALD R.,PENN, IAN M.
申请号：
CA2889805
公开号：
CA2889805C
申请日:
2013.10.31
申请国别(地区):
CA
年份:
2018
代理人:
摘要：
The present invention relates to an endovascular prosthesis. The endovascularprosthesis comprises a first expandable portion expandable from a first,unexpanded stateto a second, expanded state to urge the first expandable portion against avascular lumenand a retractable leaf portion attached to the first expandable portion. Theretractable leafportion comprises at least one spine portion and a plurality of rib portionsattached to thespine portion. In one preferred embodiment of the present endovascularprosthesis, theretractable leaf portion is configured such that a pair of ribs attached onopposite sides ofa longitudinally straightened configuration of the spine portion in a plane ofview normalto a central axis of the prosthesis defines a shape, in two dimensions, thatis substantiallynon-circular. In another preferred embodiment of the present endovascularprosthesis,the retractable leaf portion is configured such that a pair of ribs attachedon opposite sidesof a longitudinally straightened configuration of the spine portion in a planeof viewnormal to a central axis of the prosthesis defines a shape, in two dimensions,throughwhich one straight line can be translated from one side to the other side ofthe shape so asto traverse the shape only once at every point along the shape. The ribportions of thepresent endovascular prosthesis can be designed so as to provide an improvedrotationalrange of proper placement of the prosthesis with respect to the opening of theaneurysm.In a preferred embodiment, the rotational range may be as much as 45°or more. There isalso described a method for delivering an endovascular prosthesis to abifurcated arterywhich can be accomplished using a single guidewire and a single deliverydevice.
