Stent designs for use in peripheral vessels
First Claim
1. A stent comprising:
- a plurality of radially expandable rings disposed adjacent to one another thereby defining a tubular member having a proximal end portion, a distal end portion, and a middle portion, the plurality of radially expandable rings including;
a first radially expandable ring defined by a plurality of strut members,a second radially expandable ring defined by a plurality of strut members,a nth radially expandable ring defined by a plurality of strut members; and
at least one interconnection member extending between the first and second radially expandable rings at an end portion of the tubular member to define an open cell bordered by the at least one interconnection member and three or more struts of the first expandable ring and of the second radially expandable ring, respectively;
a plurality of interconnection members disposed between longitudinally adjacent radially expandable rings in the middle portion of the tubular member to define closed cells therebetween, each closed cell bordered by circumferentially adjacent interconnection members and by two struts of each of the longitudinally adjacent rings of the middle portion, wherein the middle portion of the tubular member includes a greater number of interconnection members between longitudinally adjacent rings than the end portion of the tubular member, andfurther wherein a transition section is defined between the end portion and the middle portion, the transition section including at least one open cell defined between at least two longitudinally adjacent expandable rings of the transition section and at least one closed cell defined between the at least two longitudinally adjacent expandable rings, each open cell bordered by circumferentially adjacent interconnection members extending between two longitudinally adjacent expandable rings of the transition section and by three or more struts of each of the two longitudinally adjacent expandable rings, respectively, and each closed cell bordered by circumferentially adjacent interconnection members extending between the two longitudinally adjacent expandable rings and by two struts of each of the two longitudinally adjacent rings.
1 Assignment
0 Petitions
Accused Products
Abstract
Stent designs for use in peripheral vessels, such as the carotid arteries, are disclosed. The stents consist of a plurality of radially expandable cylindrical elements generally aligned on a common longitudinal stent axis and interconnected by one or more interconnecting members placed so that the stent is flexible in a longitudinal direction. The cylindrical elements are generally serpentine wave pattern transverse to the longitudinal axis between alternating valley portion and peak portions, the valley portion including alternating double-curved portions and U-shaped portions. The interconnecting members are attached to the double-curved portions to connect a cylindrical element to an adjacent cylindrical element and interconnecting members are attached to the U-shaped portions to connect the cylindrical element to the other adjacent cylindrical element. The designs include an eight crown and six crown stent which exhibit flexibility and sufficient radial strength to support the vessel.
-
Citations
20 Claims
-
1. A stent comprising:
-
a plurality of radially expandable rings disposed adjacent to one another thereby defining a tubular member having a proximal end portion, a distal end portion, and a middle portion, the plurality of radially expandable rings including; a first radially expandable ring defined by a plurality of strut members, a second radially expandable ring defined by a plurality of strut members, a nth radially expandable ring defined by a plurality of strut members; and at least one interconnection member extending between the first and second radially expandable rings at an end portion of the tubular member to define an open cell bordered by the at least one interconnection member and three or more struts of the first expandable ring and of the second radially expandable ring, respectively; a plurality of interconnection members disposed between longitudinally adjacent radially expandable rings in the middle portion of the tubular member to define closed cells therebetween, each closed cell bordered by circumferentially adjacent interconnection members and by two struts of each of the longitudinally adjacent rings of the middle portion, wherein the middle portion of the tubular member includes a greater number of interconnection members between longitudinally adjacent rings than the end portion of the tubular member, and further wherein a transition section is defined between the end portion and the middle portion, the transition section including at least one open cell defined between at least two longitudinally adjacent expandable rings of the transition section and at least one closed cell defined between the at least two longitudinally adjacent expandable rings, each open cell bordered by circumferentially adjacent interconnection members extending between two longitudinally adjacent expandable rings of the transition section and by three or more struts of each of the two longitudinally adjacent expandable rings, respectively, and each closed cell bordered by circumferentially adjacent interconnection members extending between the two longitudinally adjacent expandable rings and by two struts of each of the two longitudinally adjacent rings. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A stent comprising:
-
a plurality of radially expandable rings disposed adjacent to one another to define a tubular member having a proximal end portion, and a distal end portion, and a middle portion, each radially expandable ring including a plurality of strut members defining alternating peak and valley portions; at least one interconnection member disposed between first and second radially expandable rings and extending between strut members thereof at an end portion of the tubular member to define an open cell bordered by the at least one interconnection member and three or more struts of the first expandable ring and of the second radially expandable ring, respectively; the middle portion of the tubular member includes a greater number of interconnection members extending between longitudinally adjacent expandable rings than the end portion of the tubular member, and further wherein a transition section is defined between the end portion and the middle portion, the transition section including at least one open cell defined between at least two longitudinally adjacent expandable rings of the transition section and at least one closed ceil defined between the at least two longitudinally adjacent expandable rings, each open cell bordered by circumferentially adjacent interconnection members extending between two longitudinally adjacent expandable rings of the transition section and by three or more struts of each of the two longitudinally adjacent expandable rings, respectively, and each closed cell bordered by circumferentially adjacent interconnection members extending between the two longitudinally adjacent expandable rings and by two struts of each of the two longitudinally adjacent expandable rings, the closed cell disposed circumferentially adjacent to the open cell. - View Dependent Claims (15, 16, 17, 18, 19, 20)
-
Specification