Medical device for intraluminal endovascular stenting
First Claim
1. A medical device comprising:
- a catheter and a stent mounted on the catheter, the stent comprising a hollow, cylindrical body comprised of a first ring and a second ring, the first and the second rings each extending circumferentially around the cylindrical body, the first and second rings each including an undulating series of peaks and valleys;
a first inflection point on the first ring, the first inflection point disposed on a portion of the first ring which extends between an adjacent peak and valley, the first inflection point including a short portion extending generally circumferentially;
a second inflection point on the second ring, the second inflection point disposed on a portion of the second ring which extends between an adjacent peak and valley, the second inflection point including a short portion extending generally circumferentially;
a link joined at a first end at the first inflection point on the first ring and at a second end at the second inflection point whereby the first and second rings are joined together.
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Accused Products
Abstract
A medical device includes a catheter and a stent mounted on the catheter, the stent having a hollow, cylindrical body made with a plurality of rings. The rings each extend circumferentially around the cylindrical body and include an undulating series of peaks and valleys. The rings are joined together by a series of links which are shaped and arranged to promote longitudinal flexibility as the stent is delivered on the catheter and effective scaffolding after deployment. In one aspect of the invention, the rings are provided with inflection points on some portions of the rings which extend in a generally circumferential direction for a short distance. A link is joined at one end at the inflection point on one ring and also joined at a second end at a second inflection point on an adjacent ring. This construction allows the crimped stent to flex longitudinally when it is subjected to bending forces such as those encountered during delivery of the stent and catheter through a tortuous coronary artery.
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Citations
92 Claims
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1. A medical device comprising:
a catheter and a stent mounted on the catheter, the stent comprising a hollow, cylindrical body comprised of a first ring and a second ring, the first and the second rings each extending circumferentially around the cylindrical body, the first and second rings each including an undulating series of peaks and valleys;
a first inflection point on the first ring, the first inflection point disposed on a portion of the first ring which extends between an adjacent peak and valley, the first inflection point including a short portion extending generally circumferentially;
a second inflection point on the second ring, the second inflection point disposed on a portion of the second ring which extends between an adjacent peak and valley, the second inflection point including a short portion extending generally circumferentially;
a link joined at a first end at the first inflection point on the first ring and at a second end at the second inflection point whereby the first and second rings are joined together. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A medical device comprising:
a catheter and a stent mounted on the catheter, the stent comprising a hollow, cylindrical body comprised of a first ring and a second ring, the first and the second rings each extending circumferentially around the cylindrical body, the first and second rings each including an undulating series of peaks and valleys;
a first inflection point on the first ring, the first inflection point disposed on a portion of the first ring which extends between an adjacent peak and valley;
a second inflection point on the second ring, the second inflection point disposed on a portion of the second ring which extends between an adjacent peak and valley;
a link joined at a first end at the first inflection point on the first ring and at a second end at the second inflection point whereby the first and second rings are joined together;
the stent crimped on the catheter such that the link nests near the first end within the undulations of the first ring and also nests near the second end within the undulations of the second ring. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A medical device comprising:
a catheter and a stent mounted on the catheter, the stent-comprising a hollow, cylindrical body comprised of a first ring and a second ring, the first and the second rings each extending circumferentially around the cylindrical body, the first and second rings each including an undulating series of peaks and valleys;
a first inflection point on the first ring, the first inflection point disposed on a portion of the first ring which extends between an adjacent peak and valley;
a second inflection point on the second ring, the second inflection point disposed on a portion of the second ring which extends between an adjacent peak and valley;
a link joined at a first end at the first inflection point on the first ring and at a second end at the second inflection point whereby the first and second rings are joined together;
the stent crimped on the catheter such that the stent can flex near the first and second inflection points without significant radial expansion as the stent is subjected to bending along a longitudinal axis as it is advanced through bends in a coronary artery. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A medical device comprising:
a catheter and a stent mounted on the catheter, the stent comprising a hollow, cylindrical body comprised of a first ring and a second ring, the first and the second rings each extending circumferentially around the cylindrical body, the first and second rings each including an undulating series of peaks and valleys, wherein the undulating peaks and valleys of the first ring are arranged with the undulating peaks and valleys of the second ring such that the first and second rings have peaks and valleys which are paired with each other in an in-phase relationship;
a link joined at a first end at a point on the first ring which is substantially centered between a peak and a valley and at a second end at a point on the second ring which is substantially centered between a peak and a valley;
the stent crimped on the catheter such that the link nests near the first end within the undulations of the first ring and also nests near the second end within the undulations of the second ring. - View Dependent Claims (42, 43, 44, 45, 46, 47)
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48. A medical device comprising:
a catheter and a stent mounted on the catheter, the stent comprising a hollow, cylindrical body comprised of a first ring and a second ring, the first and the second rings each extending circumferentially around the cylindrical body, the first and second rings each including an undulating series of peaks and valleys, wherein the undulating peaks and valleys of the first ring are arranged with the undulating peaks and valleys of the second ring such that the first and second rings appear as mirror images of each other;
a link joined at a first end at a point on the first ring which is substantially centered between a peak and a valley and at a second end at a point on the second ring which is substantially centered between a peak and a valley;
the stent crimped on the catheter such that the link nests near the first end within the undulations of the first ring and also nests near the second end within the undulations of the second ring. - View Dependent Claims (49, 50, 51, 52, 53, 54)
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55. A medical device comprising:
a catheter and a stent mounted on the catheter, the stent comprising a hollow, cylindrical body comprised of a ring, the ring extending circumferentially around the cylindrical body, the ring including an undulating series of peaks and valleys;
an inflection point on the first ring, the inflection point disposed on a portion of the first ring which extends between an adjacent peak and valley;
a first link joined at an end at the inflection point. - View Dependent Claims (56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74)
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75. A medical device comprising:
a catheter and a stent mounted on the catheter, the stent comprising a hollow, cylindrical body comprised of a first ring and a second ring, the first and the second rings each extending circumferentially around the cylindrical body, the first and second rings each including an undulating series of peaks and valleys, the peaks and valleys of the first ring forming a first amplitude and the peaks and valleys of the second ring forming a second amplitude which is smaller than the first amplitude;
a first point on the first ring, the first point disposed on a portion of the first ring which extends between an adjacent peak and valley;
a point on the second ring, the second point disposed on a portion of the second ring which extends between an adjacent peak and valley;
a link joined at a first end at the first point on the first ring and at a second end at the second point whereby the first and second rings are joined together. - View Dependent Claims (76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 90, 91, 92)
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86. A medical device comprising:
a catheter and a stent mounted on the catheter, the stent comprising a hollow, cylindrical body comprised of a ring, the ring extending circumferentially around the cylindrical body, the ring including an undulating series of peaks and valleys;
a flat, radiopaque marker joined to the first ring and substantially centered between a peak and a valley;
the stent crimped on the catheter such that the radiopaque marker nests within the undulations of the first ring and also nests near the second end within the undulations of the second ring. - View Dependent Claims (87, 88, 89)
Specification