Expandable stent
First Claim
1. An expandable stent comprising:
- a proximal end and a distal end in communication with one another; and
a tubular wall disposed between the proximal end and the distal end, the tubular wall having a longitudinal axis and a porous surface defined by a plurality of interconnected struts, the interconnected struts defining a plurality of circumferentially disposed rings of a repeating pattern, adjacent circumferentially disposed rings of the repeating pattern comprising a gradient of strut thickness when measured along the outer surface of the tubular wall, the interconnected struts including a plurality of longitudinal struts connected to the plurality of circumferentially disposed rings, the stent having a radial rigidity gradient along the length of the stent with a greater radial rigidity at the proximal end than at the distal end, the stent being expandable from a first, contracted position to a second, expanded position upon the application of a radially outward force on the stent.
1 Assignment
0 Petitions
Accused Products
Abstract
An expandable stent comprising a proximal end and a distal end in communication with one another, a tubular wall disposed between the proximal end and the distal end, the tubular wall having a longitudinal axis and a porous surface defined by a plurality of interconnected struts, the interconnected struts comprising a gradient of strut thickness from a first end to a second end of the tubular wall, the stent being expandable from a first, contracted position to a second, expanded position upon the application of a radially outward force on the stent. The stent is ideally suited for applications in which a tortuous pathway must be followed to the stenosis or blockage and in which high radial rigidity of the expanded stent is required—e.g., the treatment of ostial stenosis.
-
Citations
37 Claims
-
1. An expandable stent comprising:
-
a proximal end and a distal end in communication with one another; and
a tubular wall disposed between the proximal end and the distal end, the tubular wall having a longitudinal axis and a porous surface defined by a plurality of interconnected struts, the interconnected struts defining a plurality of circumferentially disposed rings of a repeating pattern, adjacent circumferentially disposed rings of the repeating pattern comprising a gradient of strut thickness when measured along the outer surface of the tubular wall, the interconnected struts including a plurality of longitudinal struts connected to the plurality of circumferentially disposed rings, the stent having a radial rigidity gradient along the length of the stent with a greater radial rigidity at the proximal end than at the distal end, the stent being expandable from a first, contracted position to a second, expanded position upon the application of a radially outward force on the stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
-
-
35. An expandable stent comprising:
-
a proximal end and a distal end in communication with one another; and
a tubular wall disposed between the proximal end and the distal end, the tubular wall having a longitudinal axis and a porous surface defined by a plurality of interconnected struts, the interconnected struts defining a plurality of circumferentially disposed rings of a repeating pattern, adjacent circumferentially disposed rings of the repeating pattern comprising a gradient of strut thickness when measured along the outer surface of the tubular wall, the stent having a radial rigidity gradient along the length of the stent with a greater radial rigidity at the proximal end than at the distal end, the stent being expandable from a first, contracted position to a second, expanded position upon the application of a radially outward force on the stent, and the plurality of interconnected struts comprising a series of longitudinal struts disposed substantially parallel to the longitudinal axis of the stent, each of the longitudinal struts comprising a flexure member for substantially complementary extension and compression of a diametrically opposed pair of the longitudinal struts upon flexure of the stent.
-
-
36. An expandable stent comprising:
-
a proximal end and a distal end in communication with one another; and
a tubular wall disposed between the proximal end and the distal end, the tubular wall having a longitudinal axis and a porous surface defined by a plurality of interconnected struts, the interconnected struts defining a plurality of circumferentially disposed rings of a repeating pattern, adjacent circumferentially disposed rings of the repeating pattern comprising a gradient of strut thickness, the gradient of strut thickness comprising a change in thickness of struts between adjacent circumferentially disposed rings of the repeating pattern when measured along the outer surface of the tubular wall, the repeating pattern comprising a polygon having a pair of longitudinal side walls substantially parallel to the longitudinal axis, the stent having a radial rigidity gradient along the length of the stent with a greater radial rigidity at the proximal end than at the distal end, and the stent being expandable from a first, contracted position to a second, expanded position upon the application of a radially outward force on the stent.
-
-
37. An expandable stent comprising:
-
a proximal end and a distal end in communication with one another; and
a tubular wall disposed between the proximal end and the distal end, the tubular wall having a longitudinal axis and a porous surface defined by a plurality of interconnected struts, the tubular wall having a radial rigidity gradient along the length of the stent with the proximal end having a greater radial rigidity than the distal end, the interconnected struts defining a plurality of circumferentially disposed rings of a repeating pattern, at least two circumferentially disposed rings of the repeating pattern having a different strut thickness when measured along the outer surface of the tubular wall, the interconnected struts including a plurality of longitudinal struts connected to the plurality of circumferentially disposed rings, the stent being expandable from a first, contracted position to a second, expanded position upon the application of a radially outward force on the stent.
-
Specification