Stent
First Claim
1. A stent, comprising:
- a body with a predetermined length defining a longitudinal axis and two ends;
a plurality of smooth-surfaced wings angularly spaced around the body and extending radially outwardly from the body and extending longitudinally along substantially the entire length thereof, and at least one securement barb disposed on one end of the body, the securement barb having a barb root and a barb tip, the barb root securing the securement barb to the body, the securement barb extending generally radially outwardly from the body in cantilevered fashion from the barb root to the barb tip, the securement barb being angled relative to the longitudinal axis with the barb root being located nearer to the end of the body than the barb tip.
3 Assignments
0 Petitions
Accused Products
Abstract
A biliary stent has a number of smooth-surfaced wings extending radially outwardly from a central region and extending longitudinally along substantially the entire length of the stent. A securement barb is located at one end of the stent and extends generally radially outwardly toward a side of the stent in cantilevered fashion at an angle less than or equal to 90°. The securement barb is angled such that it presents an outward-facing half-arrowhead profile. At least one end of the stent is smoothly or conically tapered. In one embodiment, the wings extend linearly along the stent; in another embodiment, the wings extend helically along the stent. Either embodiment may have a pigtail configuration at one or both ends.
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Citations
39 Claims
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1. A stent, comprising:
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a body with a predetermined length defining a longitudinal axis and two ends;
a plurality of smooth-surfaced wings angularly spaced around the body and extending radially outwardly from the body and extending longitudinally along substantially the entire length thereof, and at least one securement barb disposed on one end of the body, the securement barb having a barb root and a barb tip, the barb root securing the securement barb to the body, the securement barb extending generally radially outwardly from the body in cantilevered fashion from the barb root to the barb tip, the securement barb being angled relative to the longitudinal axis with the barb root being located nearer to the end of the body than the barb tip. - 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, 34, 35, 36)
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27. A stent, comprising:
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a body with a predetermined length defining a longitudinal axis and two ends, with a conical tip portion being disposed at each end of the body;
a lumen defined within the body, the lumen extending through the body between the two ends thereof and being constructed and arranged to accommodate a guide wire therein;
a plurality of smooth-surfaced wings angularly spaced around the body and extending radially outwardly from the body and extending longitudinally along substantially the entire length thereof; and
a securement barb disposed adjacent to each end of the body and extending from each of the conical tip portions, each securement barb having
1) a barb root securing the securement barb to the body and
2) a barb tip, with the securement barbs each tapering in width from the barb root to the barb tip thereof such that each securement barb has a generally teardrop shape, each securement barb extending generally radially outwardly from the body in cantilevered fashion from the barb root to the barb tip and being disposed at an angle of less than or equal to about 90°
relative to the longitudinal axis of the body, the securement barbs being angled in opposite directions with respect to each other, with the barb roots being located nearer to the ends of the body than the barb tips. - View Dependent Claims (28, 29, 30, 31, 32, 33, 37, 38, 39)
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Specification