Systems and methods with anchor device for fixation of filling structures in blood vessels
Inventors
Assignees
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Publication Number
US-11723668-B2
Publication Date
2023-08-15
Expiration Date
Abstract
A system, for deployment in a blood vessel includes an anchor device having a stent and a suture loop that joins distal end portions of the stent. A first filling structure and a second filling structure are at least partially insertable through the suture loop to an area within the stent when the stent is in an expanded state. The anchor device has a size such that at least a portion of the first filling structure and at least a portion of the second filling structure protrude through openings in the anchor device to form a seal against a wall of the blood vessel when the first filling structure and the second filling structure have been at least partially inserted through the suture loop and have been filled. A method allows for repairing one or more blood vessels using the system.
Core Innovation
The invention relates to an endovascular aneurysm sealing system for deployment in a blood vessel. The system includes an anchor device having a stent expandable to an expanded state and a suture loop that joins distal end portions of the stent. A filling structure is at least partially insertable through the suture loop to an area within the expanded stent.
The anchor device is sized such that, when the filling structure has been at least partially inserted through the suture loop and has been filled, at least a portion of the filling structure protrudes through openings in the anchor device. The openings include openings bounded by stent struts and at least a portion of the suture loop, so the protruding portion forms a seal against a vessel wall. In examples described, the sealing relates to an aorta below the renal arteries and an anchor attachment above the renal arteries.
In some configurations, the system further includes a first filling structure and a second filling structure that are insertable through the suture loop and filled so portions protrude through openings bounded by stent struts and portions of the suture loop. The protruding portions are described as contacting a blood vessel wall to create a seal. The system also includes fixation features such as barbs attachable to the wall of an aorta above renal arteries, and the stent geometry and aperture sizing are defined, including quantitative relationships between a proximal aperture and a distal aperture in the expanded state.
Claims Coverage
The document provides three independent claims that cover an anchor device with an expandable stent and suture loop, a filling structure that protrudes through openings bounded by stent struts and the suture loop, and a barb-based attachment in an aorta above and below the renal arteries. Across these independent claims, there are 4 main inventive features expressed as requirements on the system or method.
Expandable anchor device with stent and suture loop
The system comprises an anchor device comprising a stent and a suture loop that joins distal end portions of the stent, where the stent is expandable to an expanded state.
Filling structure insertable through the suture loop into the expanded stent
The system includes a filling structure that is at least partially insertable through the suture loop to an area within the stent when the stent is in the expanded state.
Protrusion through openings bounded by stent structure and the suture loop
The anchor device has a size such that at least a portion of the filling structure protrudes through openings in the anchor device when the filling structure has been at least partially inserted through the suture loop and has been filled.
Anchor deployment and filling to repair blood vessels with protruding portions
The method deploys an anchor device comprising a stent and a suture loop that joins distal end portions of the stent, inserts a first filling structure at least partially through the suture loop, and fills the first filling structure to cause one or more portions of the first filling structure to protrude through one or more openings bounded by one or more stent struts of the stent and at least a portion of the suture loop.
Barbs attachable to aorta above renal arteries with sealing contact below renal arteries
In the system, the anchor device includes barbs attachable to a wall of an aorta above renal arteries, and the anchor device has a size such that at least a portion of the filling structure protrudes through openings in the anchor device to contact a wall of the aorta below the renal arteries when the barbs have been attached and the filling structure has been filled after insertion through the suture loop.
Overall claim coverage centers on an anchor device with an expandable stent and suture loop, a filling structure inserted through the suture loop and filled so protruding portions pass through openings bounded by stent struts and the suture loop, and a barb-based attachment in an aorta above and below the renal arteries.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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