Tapered helical stent and method for manufacturing the stent
First Claim
1. A tapered helical implantation device for peripheral arteries and other body lumina of locally varying diameter, comprising:
- struts connected by loops and shaped in a helical winding, said helical winding defining turns and, when expanded, having a first end with a first expanded circumference, and a second end with a second expanded circumference greater than said first expanded circumference to form a stent tapering outward from said first end towards said second end;
bridges connecting adjacent ones of said turns; and
said struts, said loops, and said bridges defining a series of pores aligned along said helix, said pores having a substantially uniform pore size.
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Accused Products
Abstract
A tapered helical implantation device for peripheral arteries and other body lumina of locally varying diameter, including struts connected by loops and shaped in a helical winding. The helical winding defines turns and, when expanded, has a first end with a first expanded circumference and a second end with a second expanded circumference greater than the first expanded circumference to form a stent tapering outward from the first end towards the second end. Bridges connect adjacent ones of the turns. The struts, the loops, and the bridges define a series of pores aligned along the helix, the pores having a substantially uniform pore size. The pores has a substantially similar area. The pore size limits a size of a particle that can pass therethrough. In particular, the pore size limits a size of a spherical particle that can pass therethrough.
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Citations
38 Claims
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1. A tapered helical implantation device for peripheral arteries and other body lumina of locally varying diameter, comprising:
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struts connected by loops and shaped in a helical winding, said helical winding defining turns and, when expanded, having a first end with a first expanded circumference, and a second end with a second expanded circumference greater than said first expanded circumference to form a stent tapering outward from said first end towards said second end; bridges connecting adjacent ones of said turns; and said struts, said loops, and said bridges defining a series of pores aligned along said helix, said pores having a substantially uniform pore size. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A tapered helical implantation device for peripheral arteries and other body lumina of locally varying diameter, comprising:
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a helical winding of struts connected by loops, said helical winding defining a first end, a second end, and helical turns; said struts each having a length and a width, at least one of; said length of said struts; said width of said struts; and a frequency of said struts per one of said turns, being varied from said first end to said second end to form a diameter-varying implantable stent outwardly tapered from said first end to said second end when expanded; bridges connecting adjacent ones of said turns; and said struts, said loops, and said bridges defining a series of pores aligned along said helix, said pores having a substantially uniform pore size.
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34. An implantation device for lumina of locally varying diameter, comprising:
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a helical winding defining turns and, when expanded, having a first end with a first expanded circumference and a second end with a second expanded circumference greater than said first expanded circumference to form a stent tapering outward from said first end towards said second end; bridges connecting adjacent ones of said turns; and said winding and said bridges defining a series of pores aligned along said helix, said pores having a substantially uniform pore size.
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35. A tapered helical implantation device for peripheral arteries and other body lumina of locally varying diameter, comprising:
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struts connected by loops and shaped in a helical winding, said helical winding defining turns and, when expanded, having a first end with a first expanded circumference, and a second end with a second expanded circumference greater than said first expanded circumference to form a stent tapering outward from said first end towards said second end; bridges connecting adjacent ones of said turns; and said struts, said loops, and said bridges defining a series of pores aligned along said helix, said pores being shaped to permit particles no greater than a given size to pass therethrough, said given size being substantially constant from said first end to said second end.
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36. A tapered helical implantation device for peripheral arteries and other body lumina of locally varying diameter, comprising:
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a helical winding of struts connected by loops, said helical winding defining a first end, a second end, and helical turns; said struts each having a length and a width, at least one of; said length of said struts; said width of said struts; and a frequency of said struts per one of said turns, being varied from said first end to said second end to form a diameter-varying implantable stent outwardly tapered from said first end to said second end when expanded; bridges connecting adjacent ones of said turns; and said struts, said loops, and said bridges defining a series of pores aligned along said helix, said pores being shaped to permit particles no greater than a given size to pass therethrough, said given size being substantially constant from said first end to said second end.
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37. A tapered helical implantation device for peripheral arteries and other body lumina of locally varying diameter, comprising:
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metal struts connected by metal loops and shaped in a helical winding, said helical winding defining turns and, when expanded, having a first end with a first expanded circumference, and a second end with a second expanded circumference greater than said first expanded circumference to form a stent tapering outward from said first end towards said second end; said first end having a first end turn and said second end having a second end turn; metal bridges connecting adjacent ones of said turns; and said struts, said loops, and said bridges between said first and second end turns having a substantially constant metal-to-total area proportion.
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38. A tapered helical implantation device for peripheral arteries and other body lumina of locally varying diameter, comprising:
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a helical winding of struts connected by loops, said helical winding defining a first end, a second end, and helical turns; said first end having a first end turn and said second end having a second end turn; said struts each having a length and a width, at least one of; said length of said struts; said width of said struts; and a frequency of said struts per one of said turns, being varied from said first end to said second end to form a diameter-varying implantable stent outwardly tapered from said first end to said second end when expanded; bridges connecting adjacent ones of said turns; and said struts, said loops, and said bridges between said first and second end turns having a substantially constant metal-to-total area proportion.
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Specification