Longitudinally flexible stent
First Claim
Patent Images
1. A stent for holding open a blood vessel comprising:
- a first loop containing section, the first loop containing section arranged generally in the circumferential direction, the loops in said first loop containing section occurring at a first frequency;
a second loop containing section, the second loop containing section arranged generally in the circumferential direction, the loops in said second loop containing section also occurring at said first frequency; and
a third loop containing section the third loop containing section, the loops in said third loop containing section occurring at a second frequency that is higher than said first frequency, disposed in the generally circumferential space between said first and second loop containing sections and alternately joined to said first and second loop containing sections.
0 Assignments
0 Petitions
Accused Products
Abstract
An intravascular stent especially suited for implanting in curved arterial portions. The stent retains longitudinal flexibility after expansion. The stent includes a plurality of first circumferential bands containing a pattern of loops at a first frequency and a plurality of second circumferential bands containing a pattern of loops at a second frequency higher than said first frequency, alternating with said first circumferential bands and periodically coupled thereto to form cells. The high frequency elements provide a flexibility after expansions which can be repeatedly stress by the beating heart, with out exceeding the elastic limit of the stent material.
80 Citations
50 Claims
-
1. A stent for holding open a blood vessel comprising:
-
a first loop containing section, the first loop containing section arranged generally in the circumferential direction, the loops in said first loop containing section occurring at a first frequency;
a second loop containing section, the second loop containing section arranged generally in the circumferential direction, the loops in said second loop containing section also occurring at said first frequency; and
a third loop containing section the third loop containing section, the loops in said third loop containing section occurring at a second frequency that is higher than said first frequency, disposed in the generally circumferential space between said first and second loop containing sections and alternately joined to said first and second loop containing sections. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 49, 50)
-
-
17. A stent for widening a vessel in the human body comprising:
-
a plurality of first circumferential bands containing a pattern of loops at a first frequency;
a plurality of second circumferential bands containing a pattern of loops at a second frequency higher than said first frequency, alternating with said first circumferential bands and periodically coupled thereto to form cells. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
-
-
29. An expandable stent comprising a plurality of enclosed flexible spaces, each of the plurality of enclosed flexible spaces including:
-
a) a first member having a first end and a second end;
b) a second member having a first end and a second end;
c) a third member having a first end and a second end;
d) a fourth member having a first end and a second end;
the first end of the first member communicating with the first end of the second member, the second end of the second member communicating with the second end of the third member, and the first end of the third member communicating with the first end of the fourth member;
e) the first member and the second member with the curved portion at their ends forming a first loop;
f) the third member and the fourth member with the curved portion at their ends forming a second loop;
g) a fifth member having a first end and a second end;
h) a sixth member having a first end and a second end;
i) a seventh member having a first end and a second end;
j) an eighth member having a first end and a second end;
k) a ninth member having a first end and a second end; and
l) a tenth member having a first end and a second end, the first end of the fifth member coupled to the second end of the first member, the second end of the fifth member communicating with the second end of the sixth member, the first end of the sixth member communicating with the first end of the seventh member, the second end of the seventh member communicating with the second end of the eighth member, the first end of the eighth member communicating with the first end of the ninth member, the second end of the ninth member communicating with the second end of the tenth member, and the first end of the of the tenth member coupled to the second end of the fourth member;
m) the fifth member and the sixth member with the curved portion at their ends forming a third loop;
n) the seventh member and the eighth member with the curved portion at their ends forming a fourth loop; and
o) the ninth member and the tenth member with the curved portion at their ends forming a fifth loop. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
-
Specification