Helical mesh endoprosthesis and methods of use
First Claim
1. A stent for supporting a body lumen, the stent comprising:
- a helical mesh coil comprising a plurality of turns and first and second free ends, the stent having a maximum expanded diameter, each turn having a substantially rectangular cross-section and a width about equal to the maximum expanded diameter of the stent, the helical mesh coil including a lattice formed of a multiplicity of openings,wherein the helical mesh coil is delivered transluminally to a position within the body lumen in a contracted state and supports the body lumen in an expanded state.
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Accused Products
Abstract
A stent comprising a helical mesh coil is provided having a substantially rectangular cross-section and a band width equal to at least one-quarter to one-third of the maximum expanded circumference of the stent. The helical mesh has a multiplicity of openings forming a lattice which preferably provides about 60% open space or more. Alternative embodiments of the helical mesh may include specially designed free ends that preferentially overlap neighboring turns of the coil, to ensure that the free ends of the stent do not project into the body lumen, and integrally formed barbs that induce a ratcheting effect that ensures that the stent resists localized compressive forces. Methods of deploying the helical mesh coil stent also provided.
625 Citations
21 Claims
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1. A stent for supporting a body lumen, the stent comprising:
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a helical mesh coil comprising a plurality of turns and first and second free ends, the stent having a maximum expanded diameter, each turn having a substantially rectangular cross-section and a width about equal to the maximum expanded diameter of the stent, the helical mesh coil including a lattice formed of a multiplicity of openings, wherein the helical mesh coil is delivered transluminally to a position within the body lumen in a contracted state and supports the body lumen in an expanded state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A stent for supporting a body lumen, the stent comprising:
a helical mesh coil having first and second free ends, a maximum expanded circumference, a thickness, and a plurality of turns, each turn of the coil having a substantially rectangular cross-section and a width of at least about one-quarter of the maximum expanded circumference of the stent, the helical mesh coil including a lattice formed of a multiplicity of openings, wherein the stent has a contracted state suitable for transluminal delivery and an expanded state for supporting the body lumen when deployed at a selected one of a range of expanded circumferences. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
Specification