Methods and apparatus for luminal stenting
First Claim
1. A method, of treating an aneurysm in a vessel of a patient, comprising:
- expanding, in a vessel having an aneurysm, at least a portion of a stent, such that a first portion of the stent extends within the vessel along an opening of the aneurysm and a second portion of the stent, distal to the first portion, expands against a vessel wall distal to the aneurysm;
applying a first force to the first portion, whereby the first portion transitions from a first porosity to a second porosity, less than the first porosity, while (i) the first portion maintains a substantially similar cross-sectional dimension and (ii) movement of the second portion of the stent is impeded by a frictional force applied by the second portion against the vessel wall.
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Accused Products
Abstract
Described herein are flexible implantable occluding devices that can, for example, navigate the tortuous vessels of the neurovasculature. The occluding devices can also conform to the shape of the tortuous vessels of the vasculature. In some embodiments, the occluding devices can direct blood flow within a vessel away from an aneurysm or limit blood flow to the aneurysm. Some embodiments describe methods and apparatus for adjusting, along a length of the device, the porosity of the occluding device. In some embodiments, the occluding devices allows adequate blood flow to be provided to adjacent structures such that those structures, whether they are branch vessels or oxygen-demanding tissues, are not deprived of the necessary blood flow.
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Citations
27 Claims
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1. A method, of treating an aneurysm in a vessel of a patient, comprising:
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expanding, in a vessel having an aneurysm, at least a portion of a stent, such that a first portion of the stent extends within the vessel along an opening of the aneurysm and a second portion of the stent, distal to the first portion, expands against a vessel wall distal to the aneurysm; applying a first force to the first portion, whereby the first portion transitions from a first porosity to a second porosity, less than the first porosity, while (i) the first portion maintains a substantially similar cross-sectional dimension and (ii) movement of the second portion of the stent is impeded by a frictional force applied by the second portion against the vessel wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method, of treating a vessel of a patient, comprising:
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expanding, in a vessel having a vessel branch, at least a portion of a stent, such that a first portion of the stent extends within the vessel along an opening of the vessel branch and a second portion of the stent, distal to the first portion, expands against a vessel wall distal to the vessel branch; applying a first force to the first portion, whereby the first portion transitions from a first porosity to a second porosity, greater than the first porosity, while (i) the first portion maintains a substantially similar cross-sectional dimension and (ii) movement of the second portion of the stent is impeded by a frictional force applied by the second portion against the vessel wall. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method, of implanting a stent in a patient'"'"'s vessel, comprising:
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expanding a distal portion of a stent against a vessel wall, whereby the distal portion of the stent has a distal portion porosity when expanded against the wall; and after expanding the distal portion of the stent, and after expanding a middle portion of the stent, adjusting the middle portion of the stent, proximal to the distal portion, while the distal portion of the stent is expanded against the wall, whereby the middle portion of the stent changes from a first porosity to a second porosity, different than the first porosity, while the distal portion substantially maintains the distal portion porosity. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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Specification