Ostium stent system
First Claim
1. An expandable stent for use at an ostium, comprising:
- a tubular body having a longitudinal axis, a proximal end and a distal end;
at least one flaring member comprised of a short segment and a long segment, wherein said at least one flaring member is attached to the proximal end of said tubular body with the short segment and the long segment both parallel to the longitudinal axis of said tubular body in an unexpanded configuration; and
wherein the short segment of said at least one flaring member remains generally parallel to the longitudinal axis of said tubular body in an expanded configuration, and the long segment of said at least one flaring member becomes generally perpendicular to the longitudinal axis of said tubular body in the expanded configuration.
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Accused Products
Abstract
An ostium stent system includes a stent having a tubular body at the distal portion of the stent and a flaring portion at the proximal portion of the stent. A restraining structure that deploys the flaring portion covers only the proximal portion of the stent, providing a low profile for smooth delivery of the stent to the treatment site. The flaring portion comprises at least one flaring member which each comprise a short segment and a long segment. In an unexpanded configuration, each short and long segment are parallel to a longitudinal axis of the tubular body. When the flaring portion is deployed, each short segment remains parallel while each long segment becomes perpendicular to the longitudinal axis of the tubular body. The short segments therefore absorb the radial force resulting from deployment of the long segments and thereby prevent the stent from lifting off the balloon.
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Citations
34 Claims
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1. An expandable stent for use at an ostium, comprising:
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a tubular body having a longitudinal axis, a proximal end and a distal end;
at least one flaring member comprised of a short segment and a long segment, wherein said at least one flaring member is attached to the proximal end of said tubular body with the short segment and the long segment both parallel to the longitudinal axis of said tubular body in an unexpanded configuration; and
wherein the short segment of said at least one flaring member remains generally parallel to the longitudinal axis of said tubular body in an expanded configuration, and the long segment of said at least one flaring member becomes generally perpendicular to the longitudinal axis of said tubular body in the expanded configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An ostium stent system, comprising:
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a balloon catheter, wherein the balloon catheter includes a balloon mounted on a distal portion of the balloon catheter; and
a stent mounted on the balloon, the stent including;
a tubular body having a longitudinal axis, a proximal end and a distal end, wherein the tubular body is expanded by inflation of the balloon;
at least one flaring member attached to the proximal end of said tubular body, wherein said at least one flaring member is self expandable; and
a retaining structure covering only said at least one flaring member, wherein the removal of said retaining structure results in the expanded configuration of said at least one flaring member. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An ostium stent system, comprising:
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a balloon catheter, wherein the balloon catheter includes a balloon mounted on a distal portion of the balloon catheter; and
a stent mounted on the balloon, the stent including;
a tubular body having a longitudinal axis, a proximal end and a distal end, wherein the tubular body is expanded by inflation of the balloon; and
at least one flaring member attached to the proximal end of said tubular body, wherein said at least one flaring member is self expandable. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification