Low profile medical stent
First Claim
Patent Images
1. A medical stent comprising:
- a plurality of geometric cells defining a stent, the stent having first and second opposed open ends; and
a plurality of wire strands woven to form a plurality of crossed regions defining said geometric cells;
wherein each wire strand has strand ends and the strand ends are disposed at said second end of said stent; and
wherein the wire strands at said crossed regions cross each other only once either above or below each other at said crossed regions so that the wire strands at said crossed regions can move freely relative to each other and wherein adjacent end strands are closed without twisting to form the end of the most distal cell and then bent without twisting to form a joined portion which extends distally beyond the most distal cell.
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Abstract
The present invention relates to a medical prosthesis having a low profile for delivery into a body lumen. The stent includes a plurality of geometric cells defining the stent, which has first and second opposed open ends; and a plurality of wire strands woven to form a plurality of crossed regions defining the geometric cells. Each wire strand has strand ends and the strand ends are disposed at the second end of the stent.
121 Citations
56 Claims
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1. A medical stent comprising:
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a plurality of geometric cells defining a stent, the stent having first and second opposed open ends; and a plurality of wire strands woven to form a plurality of crossed regions defining said geometric cells; wherein each wire strand has strand ends and the strand ends are disposed at said second end of said stent; and wherein the wire strands at said crossed regions cross each other only once either above or below each other at said crossed regions so that the wire strands at said crossed regions can move freely relative to each other and wherein adjacent end strands are closed without twisting to form the end of the most distal cell and then bent without twisting to form a joined portion which extends distally beyond the most distal cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 53, 54, 55, 56)
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19. A medical stent comprising:
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a plurality of geometric cells defining a stent, the stent having first and second opposed open ends; and a plurality of wire strands woven to form a plurality of crossed regions defining said geometric cells; wherein the wire stands are bent to define said first end of said stent and further wherein each wire strand has strand ends and the strand ends are disposed at said second end of said stent; and wherein the wire strands at said crossed regions cross each other only once either above or below each other at said crossed regions so that the wire strands at said crossed regions can move freely relative to each other and wherein adjacent end strands are closed without twisting to form the end of the most distal cell and then at least one end strand is bent without twisting to form a joint. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method of making a medical stent, comprising:
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providing a plurality of wire strands, each strand having strand ends; bending the wire strands to form a first end of the stent; and diagonally weaving the wires; and crossing the wires only once either above or below each other to produce a plurality crossed regions defining a plurality of geometric cells so that the wire strands at said crossed regions can move freely relative to each other; wherein said strand ends form a second end of the stent and wherein adjacent end strands are closed without twisting to form the end of the most distal cell and then bent without twisting to form a joined portion which extends distally beyond the most distal cell. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A medical stent comprising:
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a plurality of geometric cells defining a stent, the stent having first and second opposed open ends; and a plurality of wire strands woven to form a plurality of crossed regions defining said geometric cells; wherein the wire stands are bent to define said first end of said stent and further wherein each wire strand has strand ends and pairs of the strand ends are aligned parallel to each other and joined without twisting to form the end of the most distal cell at said second end of said stent; and wherein the wire strands at said crossed regions cross each other only once either above or below each other at said crossed regions so that the wire strands at said crossed regions can move freely relative to each other.
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48. A medical stent comprising:
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a plurality of geometric cells defining a stent, the stent having first and second opposed open ends; and a plurality of wire strands woven to form a plurality of crossed regions defining said geometric cells, the crossed regions having at least one angle which increases when the stent is radially expanded; wherein the wire stands are bent to define said first end of said stent and further wherein each wire strand has strand ends and the strand ends are disposed at said second end of said stent; and wherein the wire strands at said crossed regions cross each other only once either above or below each other at said crossed regions so that the wire strands at said crossed regions can move freely relative to each other and wherein pairs of strand ends are aligned parallel to each other and joined without twisting to form the end of the most distal cell. - View Dependent Claims (49, 50, 51)
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52. A medical stent comprising:
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a plurality of geometric cells defining a stent, the stent having first and second opposed open ends; and a plurality of wire strands woven to form a plurality of crossed regions defining said geometric cells, the crossed regions having at least one obtuse angle which increases when the stent is radially expanded; wherein the wire stands are bent to define said first end of said stent and further wherein each wire strand has strand ends and the strand ends are disposed at said second end of said stent; and wherein the wire strands at said crossed regions cross each other only once either above or below each other at said crossed regions so that the wire strands at said crossed regions can move freely relative to each other, and wherein adjacent end strands are joined without twisting along an axis parallel to the longitudinal axis of the stent and wherein said joined portion extends distally beyond the most distal cell of the stent.
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Specification