Modular endograft devices and associated systems and methods

摘要

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.

主权项

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.