Intravascular stent
DCFirst Claim
1. An intravascular stent, comprising:
- a generally cylindrical body including a helically coiled wire, wherein said helically coiled wire has generally sinusoidally-shaped waves;
wherein said generally cylindrical body is capable of radially expanding.
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Abstract
A medical device for use in the interior of a body lumen includes a balloon catheter and a radially expandable stent. The stent includes a plurality of zig-zags of a low memory metal formed into a hollow, open-ended cylindrical shape. The individual zig-zags have a curved portion forming a reversing bend which allows the zig-zags to expand and deform as the balloon radially expands the stent. The curved portions of the zig-zags are aligned along the length of the stent in a spaced-apart arrangement with some curved portions attached and others unattached to adjacent zig-zags. The resulting stent is longitudinally flexible throughout its length when unexpanded and is also capable of conforming to a bend in the body lumen when expanded.
282 Citations
21 Claims
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1. An intravascular stent, comprising:
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a generally cylindrical body including a helically coiled wire, wherein said helically coiled wire has generally sinusoidally-shaped waves; wherein said generally cylindrical body is capable of radially expanding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An intravascular stent, comprising:
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a helically shaped stent body including a wire coiled into a helical shape, wherein said wire comprises a series of undulations, wherein the stent body may be expanded from a first delivery diameter to a second implanted diameter; wherein said helically shaped stent body generally forms a series of adjacent rows of said undulations; wherein said undulations of each of said adjacent rows have a generally uniform amplitude; wherein at least one of said undulations of a first row is a longer undulation, wherein said-longer undulation has a larger amplitude than said generally uniform undulations of said first row; wherein said larger undulation of said first row extends beyond a point of an undulation of an adjacent second row that is closest to said first row; wherein a first section of said stent is capable of being expanded within a human vasculature in a first expanding procedure and a second section of said stent is capable of being expanded within said human vasculature in a second expanding procedure; wherein at least a portion of said stent is capable of being expanded between an aortic arch and an aortic bifurcation of a human; and wherein a position of said stent within said human vasculature is visible on a fluoroscope. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. An intravascular stent, comprising:
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a generally cylindrical body including a helically coiled wire, wherein said helically coiled wire has generally sinusoidally-shaped waves; wherein said generally cylindrical body is capable of radially expanding; wherein said cylindrical body generally forms a series of adjacent rows of said generally sinusoidally-shaped waves; wherein said generally sinusoidally-shaped waves of each of said adjacent rows have a generally uniform amplitude; wherein at least one row includes a longer wave, wherein said longer wave has a larger amplitude than said generally uniform amplitude of said generally sinusoidally-shaped waves of said row.
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Specification