Abbott Cardiovascular Systems, Inc.

Advanced Cardiovascular Systems, Inc.

Diem Uyen Ta

Senthil Kumar Eswaran

Andreina P Gomez

Chad Joseph Abunassar

Stephen D Pacetti

Nianjiong Joan Bei

Ni Ding

Timothy A Limon

Daniel L Cox

Andy Edward Denison

Darrin James Kent

David K Wrolstad

Santosh V Prabhu

James Oberhauser

E Tina Cheng

Rommel Lumauig

Xiao Ma

Joel Harrington

Jill A McCoy

Leonard Darius Barbod

Svava Maria Atladottir

Jessie Delgado

Erik David Eli

Carla Rosa Pienknagura

Kenneth Kay Armstrong

Thomas Ray Hatten

Kyle Marie Krueger

Caroline Wu

Brenna K Hearn

Richard Rapoza

Zhicheng Lin

Bjorn G Svensson

David Chi

Senthil K Eswaran

Stephen Dirk Pacetti

Erik D Eli

This invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more links. A Y-shaped member is comprised of a U-shaped member and a link having a curved portion and a straight portion to improve the flexibility and thereby improve the fatigue performance of the Y-link junction.

Intravascular stent having high fatigue performance

An expandable stent for implantation in a body lumen, such as an artery, is disclosed. The stent consists of a plurality of radially expandable cylindrical rings generally aligned on a common longitudinal stent axis and interconnected by one or more interconnecting links placed so that the stent is flexible in the longitudinal direction. The link pattern is optimized to enhance longitudinal flexibility and high longitudinal strength compression of the stent.

Intravascular stent

The invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more links. A Y-shaped member comprised of a link and a U-shaped member has relief dimples formed in the curved portion of a valley to reduce localized stress and thereby reduce fatigue failure that can lead to link structure failure.

An expandable stent for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. In one aspect, the stent includes a butterfly pattern to which connecting links are attached. In another aspect, the stent embodies a non-directional structure.

Methods are disclosed including thermally processing a scaffold to increase the radial strength of the scaffold when the scaffold is deployed from a crimped state to a deployed state such as a nominal deployment diameter. The thermal processing may further maintain or increase the expansion capability of the scaffold when expanded beyond the nominal diameter.

Thermal processing of polymer scaffolds

The invention is directed to an expandable stent for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. The invention provides for an intravascular stent having a plurality of cylindrical rings connected by undulating links. The stent has a high degree of flexibility in the longitudinal direction, yet has adequate vessel wall coverage and sufficient radial strength to hold open an artery or other body lumen. The stent can be compressed or crimped onto a catheter to a very low profile since the inside radii of curvature of some of the peaks and valleys allow the stent to be crimped to a very low profile onto a catheter and increase radial strength over prior art stents.

A thin-walled scaffold includes a radiopaque marker connected to a link. In a first example, the marker is retained on the strut by a head at one or both ends by swaging. In a second example of a thin-walled scaffold the link is modified to avoid interference during crimping. In a third example a distal end of the thin-walled scaffold is modified to improve deliverability of the thin-walled scaffold. These features are combined in a fourth example.

Thin-walled scaffolds having flexible distal end

Thin-walled scaffolds having reduced crimp profile and carrying radiopaque markers

A scaffold strut is shaped to improve hemocompatibility. The scaffold is made from a tube having variable wall thickness. Methods are disclosed for modifying the thickness of the tube in such a way as to achieve a reduced hemodynamic profile, but without significantly affecting strength properties in areas where stress concentrations exist when the scaffold is loaded.

Scaffolds having variable wall thickness

Thin-walled scaffolds having modified marker structure near distal end

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San Jose, CA, United States of America

Diem Uyen Ta