METHODS AND APPARATUS FOR LUMINAL STENTING
First Claim
1. A method, of implanting a stent in a patient'"'"'s blood vessel, comprising:
- providing an elongate body, the elongate body comprising a proximal portion, a distal portion, and a lumen extending between the proximal portion and the distal portion;
inserting the distal portion in a blood vessel of a patient;
advancing the distal portion within the blood vessel until the distal portion is at a target site;
advancing, relative to the elongate body and within the lumen of the elongate body, a stent in a compressed configuration;
allowing a distal portion of the stent to expand to an expanded configuration and contact a vessel wall as a distal portion of the stent is advanced out of the distal portion of the elongate body; and
after the distal portion of the stent is in the expanded configuration and contacts the vessel wall, axially compressing the stent to change a porosity of the stent by advancing a proximal portion of the stent with respect to the distal portion of the stent.
5 Assignments
0 Petitions
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
53 Claims
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1. A method, of implanting a stent in a patient'"'"'s blood vessel, comprising:
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providing an elongate body, the elongate body comprising a proximal portion, a distal portion, and a lumen extending between the proximal portion and the distal portion; inserting the distal portion in a blood vessel of a patient; advancing the distal portion within the blood vessel until the distal portion is at a target site; advancing, relative to the elongate body and within the lumen of the elongate body, a stent in a compressed configuration; allowing a distal portion of the stent to expand to an expanded configuration and contact a vessel wall as a distal portion of the stent is advanced out of the distal portion of the elongate body; and after the distal portion of the stent is in the expanded configuration and contacts the vessel wall, axially compressing the stent to change a porosity of the stent by advancing a proximal portion of the stent with respect to the distal portion of the stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method, of implanting a stent in a patient'"'"'s vessel, comprising:
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providing a stent comprising a distal section and a proximal section and having a compressed configuration and an expanded configuration, the stent being configured to change from the compressed configuration to the expanded configuration and to have a variable porosity when in the expanded configuration; advancing the stent within the patient'"'"'s vessel to a target site; expanding the distal section of the stent at the target site; varying a proximal section porosity with respect to a distal section porosity by advancing, after the expanding the distal section, the proximal section of the stent axially relative to the distal section; and expanding the proximal section of the stent in the patient'"'"'s vessel. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method, of implanting a stent in a patient'"'"'s vessel, comprising:
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providing a stent comprising a distal section and a proximal section and having a compressed configuration and an expanded configuration, the stent being configured to have an adjustable porosity; expanding the distal section of the stent in the patient'"'"'s vessel such that the distal section has a first porosity; and adjusting the proximal section such that, when expanded within the patient'"'"'s vessel, the proximal section has a second porosity different than the first porosity. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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29. A method, of implanting a stent in a patient'"'"'s vessel, comprising:
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advancing a stent in a vessel to a treatment site; expanding, on one side of the treatment site, a distal section of the stent in the vessel such that, after expanding, the distal section has a distal section wall with a first porosity; after expanding the distal section of the stent, adjusting a middle section of the stent such that, when adjusted, the middle section has a middle section wall having a second porosity less than the first porosity; and after adjusting the middle section, expanding a proximal section of the stent such that, after expanding, the proximal section has a proximal section wall having a third porosity. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A method, of implanting a stent in a patient'"'"'s vessel, comprising:
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expanding a stent in the vessel, the stent having a wall with an adjustable porosity that, when unrestrained, has a first porosity; and adjusting the stent within the vessel such that a middle section of the wall has a second porosity different than the first porosity. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50)
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51. A method, of treating a patient'"'"'s vessel, comprising:
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advancing a stent into a patient'"'"'s vessel, the stent having lumen extending between a proximal end of the stent and a distal end of the stent; expanding the stent from a first state, having a first cross-sectional dimension to a second state, having a second cross-sectional dimension greater than the first cross-sectional dimension, the stent having a second state stent length less than a first state stent length; and axially compressing a first portion of the stent to a third state, such that the stent has a third state stent length less than the second state stent length; wherein the expanding the stent from the first state comprises permitting the stent to axially compress and radially expand by unrestraining the stent; and wherein the axially compressing the first portion of the stent comprises applying an axially compressive force on the stent when the stent is in the second state. - View Dependent Claims (52, 53)
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Specification