Vascular stenting for aneurysms
AssigneeCovidien LP
InventorsAaron Lee Berez, Quang Quoc Tran
Life of this patent
Estimating the term…
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.
Claims20
A method of treating an aneurysm, the method comprising:
- advancing a delivery device within a blood vessel comprising an aneurysm until a distal portion of the device is adjacent the aneurysm;
- expanding a first stent within the vessel, the expanded first stent extending from a first side of the aneurysm to a second side of the aneurysm;
- and
- withdrawing the delivery device from the vessel upon determining that between about 30% and about 70% of a fluid in a body of the aneurysm has formed occlusive material, comprising a thrombus.
A method of implanting a stent at an aneurysm in a blood vessel, the method comprising:
- providing an 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 comprising an aneurysm;
- advancing the distal portion within the blood vessel until the distal portion is proximate to the aneurysm;
- advancing, relative to the elongate body and within the lumen of the elongate body, a stent in a compressed configuration;
- expanding the stent within the vessel, the expanded stent extending from a first location distal to the aneurysm to a second location proximal to the aneurysm;
- and
- following the expanding the stent and upon confirming that a body of the aneurysm has from about 30% to no more than about 70% occlusion formation, wherein said occlusion formation is indicative of a correlated level of thrombosis, withdrawing the elongate body from the vessel.
A method for generating thrombus within an aneurysm, the method comprising:
- advancing a delivery device within a blood vessel until a distal portion of the delivery device is adjacent the aneurysm;
- expanding a stent across the aneurysm;
- imaging the aneurysm;
- determining a degree of thrombosis within the aneurysm after expanding the stent;
- and
- after determining that said expanding results in formation of occlusion material, comprising a thrombus, in the aneurysm corresponding to between about 30% and about 70% of a fluid in a body of the aneurysm, withdrawing the delivery device from the vessel.
Dependencies are inferred from the claim text.