Intravascular stent
First Claim
1. A medical device for use in the interior of a body lumen comprising:
- (a) a catheter;
(b) a radially expandable stent mounted on the catheter, the stent comprising;
(1) a plurality of wire elements forming a hollow cylinder, the wire elements spaced apart along the cylinder, each of the wire elements extending 360 degrees around the cylinder, and each of the wire elements having a plurality of extendible portions provided by zig-zags in the wire elements, the zig-zags made from a low memory metal, the zig-zags lying flat with respect to the cylinder which permit the wire elements to be expanded from a first diameter covering 360 degrees of the cylinder to a second, expanded diameter covering 360 degrees of the expanded cylinder; and
(2) means for connecting adjacent wire elements together.
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Accused Products
Abstract
A medical device for use in the interior of a body lumen including a catheter and a radially expandable stent mounted on the catheter. The radially expandable stent is in the form of a hollow cylinder defined by a sequence of spaced apart wire elements with each of the wire elements extending 360 degrees around the cylinder and the wire elements having extendible, sinusoidal zig-zags lying flat with respect to the cylinder. The zig-zags are shaped in a generally longitudinal direction along the cylinder at one point and then reverse their direction so that the zig-zags may open as the wire element is expanded. The adjacent wire elements are flexibly connected together in an end-to-end fashion by helical winding.
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Citations
42 Claims
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1. A medical device for use in the interior of a body lumen comprising:
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(a) a catheter; (b) a radially expandable stent mounted on the catheter, the stent comprising; (1) a plurality of wire elements forming a hollow cylinder, the wire elements spaced apart along the cylinder, each of the wire elements extending 360 degrees around the cylinder, and each of the wire elements having a plurality of extendible portions provided by zig-zags in the wire elements, the zig-zags made from a low memory metal, the zig-zags lying flat with respect to the cylinder which permit the wire elements to be expanded from a first diameter covering 360 degrees of the cylinder to a second, expanded diameter covering 360 degrees of the expanded cylinder; and (2) means for connecting adjacent wire elements together. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A medical device for use in the interior of a body lumen comprising:
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(a) a catheter; (b) a radially expandable stent mounted on the catheter, the stent comprising; (1) a plurality of elements forming a hollow cylinder, the elements arranged sequentially along the cylinder, each of the elements extending around the cylinder, and each of the elements having zig-zags therein, the zig-zags made from a low memory metal, the zig-zags being generally sinusoidal in shape with the zig-zags taking a generally longitudinal direction along the cylinder and then reversing their direction and lying flat with respect to the cylinder such that the zig-zags open as the stent is expanded from a first diameter to a second, expanded diameter; and (2) means for connecting adjacent elements together. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A medical device for use in the interior of a body lumen comprising:
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(a) a catheter; (b) a radially expandable stent mounted on the catheter, the stent comprising; (1) a plurality of elements forming o hollow cylinder, the elements spaced apart along the length of the cylinder, each of the elements extending 360 degrees around the cylinder, and each of the elements having a plurality of extendible portions made from a low memory material lying flat with respect to the cylinder which permit the elements to deform and be expanded from a first diameter covering 360 degrees of the cylinder to a second, expanded diameter covering 360 degrees of the expanded cylinder; and (2) means for connecting adjacent elements together including means for providing flexibility to the stent. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A medical device for use in the interior of a body lumen comprising:
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(a) a catheter; (b) a radially expandable stent mounted on the catheter, the stent comprising; (1) a plurality of elements forming a hollow cylinder, the elements spaced apart along the length of the cylinder, each of the elements extending 360 degrees around the cylinder, and each of the elements having a plurality of extendible portions lying flat with respect to the cylinder which permit the elements to be expanded from a first diameter covering 360 degrees of the cylinder to a second, expanded diameter covering 360 degrees of the expanded cylinder; and (2) means for flexible, helical connection of adjacent elements. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification