Patent ID: 8343210
Filing Date: 2013-01-01
Classification: A61F

Abstract:
1. A stent and stent retrieval system, said retrieval system comprising a tubular member with a lumen terminating in a distal end opening, and a retrieval member with a least one of engagement means, the tubular member and the retrieval member being mutually axially displaceable while the retrieval member extends in said lumen of the tubular member, said stent comprising at least one engagement member to which said at least one engagement means can engage and a tubular body of a plurality of annular rows of cells that are interconnected and located one after the other in the axial direction of the tubular body, the cells in one annular row of cells being interconnected with the subsequent row of similarly oriented cells at areas of interconnection which in said subsequent annular row of cells are circumferentially offset with respect to the connections between the cells in said subsequent annular row of cells, wherein the end row of cells is an annular row of cells comprising the first cell sides together forming at least one circumferentially closed loop in which the individual cell has an attachment point, wherein said at least one engagement member comprises at least three tie members that are mutually connected at a junction and extend individually from the junction to the attachment point of an associated cell, and wherein the attachment points in the annular end row of cells are circumferentially offset with respect to the connections or areas of interconnection at the end of the tubular body between the cells in said end row wherein, in the individual annular rows of cells located within the tubular body, the first cell sides together form at least one circumferentially closed loop in which the first cell sides mutually extending from the individual area of interconnection together form an angle (δ 1 ) of less than 176° on an exterior of the respective cell associated with the individual area of interconnection.