Modular endograft devices and associated systems and methods
First Claim
1. A method of repairing an aneurysm in an aorta of a human patient, the method comprising:
- advancing a first endograft device to a target site in the aorta before the aneurysm, wherein the first endograft device includes a first frame, a first cover, and a first lumen within the first cover, wherein the first frame and the first cover have a first superior portion and a first inferior portion, the first superior portion having a first outer wall and a first septal wall that together define a substantially D-shaped cross-section;
advancing a second endograft device to the target site in the aorta, wherein the second endograft device includes a second frame, a second cover, and a second lumen within the second cover, wherein the second frame and the second cover have a second superior portion and a second inferior portion, and the second superior portion having a second outer wall and a second septal wall that together define a substantially D-shaped cross-section, wherein the first and second endograft devices are positioned independently of one another;
longitudinally staggering a superior end of the first septal wall of the first frame of the first endograft device with respect to a superior end of the second septal wall of the second frame of the second endograft device within the aorta to accommodate the naturally anatomically variable orientation of renal arteries of the patient; and
deploying the staggered first and second endograft devices at the target site such that the first and second endograft devices self-expand to an expanded configuration via inherent hoop forces in the first and second frames, wherein after deployment the first and second septal walls press against each other to form a septum between the first and second lumens with the superior ends of the first and second septal walls longitudinally staggered, and wherein the first and second outer walls press against a vessel wall of the aorta.
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Accused Products
Abstract
Modular endograft devices and associated systems and methods are disclosed herein. In several embodiments, an endograft system can include a first endograft device and a second endograft device that each include an integrated frame, a cover and a lumen within the cover. Each endograft device further includes a superior portion and an inferior portion. The superior portion can have a convexly curved outer wall and a septal wall. The first and second endograft devices can be configured to extend into a low-profile configuration with a first cross-sectional dimension and a first length and self-expand into an expanded configuration with a second cross-sectional dimension greater than the first cross-sectional dimension and a second length less than the first length. In the expanded configuration, the septal walls can press against each other and form a septum between the lumens of the first and second endograft devices.
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Citations
34 Claims
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1. A method of repairing an aneurysm in an aorta of a human patient, the method comprising:
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advancing a first endograft device to a target site in the aorta before the aneurysm, wherein the first endograft device includes a first frame, a first cover, and a first lumen within the first cover, wherein the first frame and the first cover have a first superior portion and a first inferior portion, the first superior portion having a first outer wall and a first septal wall that together define a substantially D-shaped cross-section; advancing a second endograft device to the target site in the aorta, wherein the second endograft device includes a second frame, a second cover, and a second lumen within the second cover, wherein the second frame and the second cover have a second superior portion and a second inferior portion, and the second superior portion having a second outer wall and a second septal wall that together define a substantially D-shaped cross-section, wherein the first and second endograft devices are positioned independently of one another; longitudinally staggering a superior end of the first septal wall of the first frame of the first endograft device with respect to a superior end of the second septal wall of the second frame of the second endograft device within the aorta to accommodate the naturally anatomically variable orientation of renal arteries of the patient; and deploying the staggered first and second endograft devices at the target site such that the first and second endograft devices self-expand to an expanded configuration via inherent hoop forces in the first and second frames, wherein after deployment the first and second septal walls press against each other to form a septum between the first and second lumens with the superior ends of the first and second septal walls longitudinally staggered, and wherein the first and second outer walls press against a vessel wall of the aorta. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of treating an abdominal aortic aneurysm (AAA) of a human patient, the method comprising:
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positioning a first endograft device in an abdominal aorta of the patient relative to the aneurysm such that at least a segment of a first superior portion of the first endograft device is positioned superior to the aneurysm and a first inferior portion of the first endograft device extends at least partially through the aneurysm, wherein the first superior portion comprises a first braided frame with a convexly curved first outer wall and a first septal wall that define a substantially D-shaped cross-section, with at least a portion of the first braided frame having a first cover extending about the circumference of the first braided frame; positioning a second endograft device in the abdominal aorta of the patient relative to an aneurysm such that at least a segment of a second superior portion of the second endograft device is positioned superior to the aneurysm and longitudinally offset relative to the first braided frame of the first endograft device, and such that a free end portion of the first braided frame projects distally beyond the superior end of the second endograft device, wherein— a second inferior portion of the second endograft device extends at least partially through the aneurysm, the second superior portion comprises a second braided frame with a convexly curved second outer wall and a second septal wall that define a substantially D-shaped cross-section, the second braided frame defining the superior end of the second endograft device, with at least a portion of the second braided frame having a second cover extending about the circumference of the second braided frame, and the second endograft device is positioned independently of the first endograft device; deploying the first endograft device from a first catheter and deploying the second endograft device from a second catheter such that the first and second superior portions self-expand to an expanded configuration in which the first and second septal walls press against each other via an inherent spring force to form a septum between the first and second lumens, wherein the free end portion of the first braided frame projecting distally beyond the superior end of the second superior portion at least substantially maintains the substantially D-shaped cross-section, and wherein the septal wall of the first braided frame has the first cover thereon, the septal wall and its first cover projecting distally beyond the superior end of the second endograft device and its second cover after the first and second endograft devices are deployed. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A method of treating an aneurysm in an abdominal aorta of a human patient, the method comprising:
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positioning a superior portion of a first endograft device in the aorta between the aneurysm and a first renal artery of the patient, wherein the superior portion of the first endograft device has a substantially D-shaped cross-section; positioning a superior portion of a second endograft device in the aorta between the aneurysm and a second renal artery of the patient offset from the first renal artery of the patient, wherein the superior portion of the second endograft device has a substantially D-shaped cross-section; sealing an outer wall of the superior portion of the first endograft device to a first portion of the aorta at least partially superior to the second renal artery of the patient and inferior to the first renal artery of the patient; sealing an outer wall of the superior portion of the second endograft device to a second portion of the aorta offset from the first portion of the aorta and inferior to both the first and second renal arteries of the patient, wherein the first and second endograft devices each comprise a braided stent extending from a superior end to an inferior end of the corresponding endograft device, with the superior portions of the first and second endograft devices having covers extending from their superior ends and circumferentially enclosing the braid of the braided stent; and sealing a septal wall of the superior portion of the first endograft device to a septal wall of the superior portion of the second endograft device such that a superior end of the septal wall of the first endograft device is longitudinally offset from a superior end of the septal wall of the second endograft when the outer walls of the superior portions of the first and second endograft devices are sealed to their respective first and second portions of the aorta. - View Dependent Claims (23, 24, 25, 26)
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27. A method of treating an aneurysm in an aorta of a human patient, the method comprising:
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positioning at least a segment of a first superior portion of a first endograft device in the aorta before the aneurysm, wherein the first superior portion has a substantially D-shaped cross-section, and wherein the first endograft device comprises— a first braided frame extending from a superior end of the first endograft device to an inferior end of the first endograft device, and a first cover on the first braided frame, the first cover circumferentially enclosing at least a portion of the first braided frame and having an outer surface that substantially conforms to the first braided frame when the first braided frame is in an expanded state; positioning at least a segment of a second superior portion of a second endograft device in the aorta before the aneurysm, wherein the second superior portion has a substantially D-shaped cross-section, and wherein the second endograft device comprises— a second braided frame extending from a superior end of the second endograft device to an inferior end of the second endograft device, and a second cover on the second braided frame, the second cover circumferentially enclosing at least a portion of the second braided frame and having an outer surface that substantially conforms to the second braided frame when the second braided frame is in an expanded state; at least partially deploying the first superior portion of the first endograft device within the aorta, wherein, during deployment, the first endograft device expands to a first cross-sectional area via inherent outward spring force of the first braided frame; constricting the first superior portion of the first endograft device to a second cross-sectional area less than the first-cross sectional area; repositioning the first superior portion within the aorta while the first superior portion is constricted to the second cross-sectional area; deploying the first superior portion of the first endograft device within the aorta after constriction; and deploying the second superior portion of the second endograft device within the aorta such that the first and second superior portions form a sealed septum between the first and second endograft devices, and such that the first cover of the first endograft device at the septum extends superior to the second cover of the second endograft device at the septum after deployment. - View Dependent Claims (28, 29)
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30. A method of treating an aneurysm in an aorta of a human patient, the method comprising:
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advancing a first endograft device through a left iliac artery of the patient; advancing a second endograft device through a right iliac artery of the patient; positioning a first superior portion of the first endograft device in the aorta proximate a right renal artery of the patient; positioning a second superior portion of the second endograft device in the aorta proximate a left renal artery of the patient such that the first and second endograft devices cross each other within the aorta; deploying the first endograft device such that at least a segment of the first superior portion seals with a right portion of the aorta proximate the right renal artery and a first inferior portion of the first endograft device seals to a portion of the left iliac artery; and deploying the second endograft device such that at least a segment of the second superior portion seals with a left portion of the aorta proximate the left renal artery and a second inferior portion of the second endograft devices seals to a portion of the right iliac artery, and such that the second endograft device abuts the first at a septum, with one of the first and second endograft devices extending superiorly beyond the other of the first and second endograft devices at the septum after deployment.
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31. A method of treating an aneurysm in an aorta of a human patient, the method comprising:
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positioning a first superior portion of a first endograft device in the aorta proximate to the aneurysm, wherein the first superior portion has a first frame and a first graft material over the first frame, and wherein the first superior portion has a substantially D-shaped cross-section defined by a convexly curved first outer wall and a first septal wall; positioning a second superior portion of a second endograft device in the aorta proximate to the aneurysm, wherein the second superior portion has a second frame and a second graft material over the second frame, and wherein the second superior portion has a substantially D-shaped cross-section defined by a convexly curved second outer wall and a second septal wall; longitudinally staggering a superior terminus of the first graft material and a superior terminus of the second graft material such that the superior termini of the first and second graft material are longitudinally offset from each other along the first and second septal walls; and sealing the longitudinally staggered first and second graft materials together at the first and second septal walls to form a sealed septum wherein the superior termini of the first and second graft material are longitudinally offset from each other along the first and second septal walls after the first and second graft materials are sealed together at the first and second septal walls. - View Dependent Claims (32, 33, 34)
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Specification