Boston Scientific Scimed, Inc.

Scimed Life Systems, Inc.

Vascudyne, LLC

Schankereli, Kemal

Davis, Michael L.

Murphy, Richard F.

Michael L Davis

Brian J Brown

David L Friesen

Sean P Skubitz

Daniel J Gregorich

Michael P Meyer

Paul F Chouinard

Kemal Schankereli

Timothy J Ley

Mehran Bashiri

Richard F Murphy

A stent is provided with a plurality of annular elements. Each annular element has a compressed state and an expanded state. At least one connecting member connects adjacent annular elements to form a plurality of cells with each cell having an area. The stent has a first segment and a second segment, with the first segment having a plurality of combined adjacent cells that impart greater flexibility to the first segment than the second segment.

Longitudinally flexible expandable stent

A stent comprises a tubular member having openings therein and having a plurality of interconnected members and one or more frangible restraining members. The frangible restraining members break upon partial expansion of the stent. Thereafter, the stent self-expands.

Hybrid ballon expandable/self-expanding stent

Segmented articulatable stent of open structure comprised of end-connected struts of first and second lengths making up first and second segments with angular interconnects between adjacent first and second segments.

In at least one embodiment, a stent comprises a plurality of serpentine bands and a plurality of connector columns. Each serpentine band comprises a plurality of alternating straight band struts and turns. Adjacent serpentine bands are connected across a connector column by a plurality of connector struts. Each connector strut is connected at one end to a turn of one serpentine band and connected at the other end to a turn of another serpentine band. The turns of a serpentine band comprise connected turns that connect to a connector strut and unconnected turns that do not connect to a connector strut. At least one serpentine band comprises a repeating pattern of three band struts and then five band struts extending between connected turns as the serpentine band is traversed. At least one serpentine band comprises a repeating pattern of three band struts and then one band strut extending between connected turns as the serpentine band is traversed.

A stent in a non-expanded state includes a first expansion column and a second expansion column. The first expansion column comprises a plurality of expansion strut pairs. Each expansion strut pair includes a first expansion strut and a second expansion strut joined by a joining strut. The second expansion column comprises a plurality of expansion strut pairs. Each expansion strut pair includes a first expansion strut and a second expansion strut joined by a joining strut. The first and second expansion columns are connected via a first connecting strut column. The first connecting strut column comprises a plurality of first connecting struts. The first expansion strut of the first expansion strut pair in the first expansion column has a longitudinal axis offset from a longitudinal axis of the first expansion strut of the second expansion strut pair in the second expansion column.

An expandable stent comprises a multiplicity of sets of strut members. Each set of strut members forms a circumferentially extending closed structure with adjacent sets of strut members being coupled each to the other by connectors. The stent has two types of sets of strut members, a first type of set of strut members and a second type of set of strut members. The first type of set of strut members has a shorter total pathlength about the periphery of the stent than the second type of set of strut members. When the stent is radially deployed to its nominal diameter, the first type of set of strut members has greater radial rigidity as compared to the second type of set of strut members.

A stent comprises a plurality of adjacent cylindrical elements defining a first end section, a second end section, and a center section therebetween. Each cylindrical element has constant thickness struts formed in a generally serpentine wave pattern transverse to the longitudinal axis which contains alternating valley portions and peak portions. A plurality of interconnecting members extend between the adjacent cylindrical elements and connect the adjacent cylindrical elements to one another. The cylindrical elements are formed of a stent material, the composition of which is uniform throughout the stent. The stent material of the struts in each of the first end section and the second end section have a greater mass than the stent material of the struts of the center section.

Segmented articulatable stent of open structure comprised of end-connected struts making up the segments with angular interconnects between segments.

Stent comprised of a plurality of serpentine bands of different frequencies and/or amplitudes.

The invention provides a tubular expandable stent including a plurality of cylindrically shaped open cylindrical segments aligned on a common longitudinal axis to define a generally tubular stent body, each segment being defined by a member formed in an undulating flexible pattern of interconnected substantially parallel struts with pairs thereof having alternating interconnecting end portions to define the periphery of the expandable stent segment, and in which the connected end portions of paired struts in each segment, before the stent is expanded, are positioned substantially opposite to connected end portions of paired struts in adjacent segments.

Growing community of inventors

Shorewood, MN, United States of America

Michael L Davis