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US 11,839,702 B2Granted
Vascular prosthesis for leak prevention during endovascular aneurysm repair
AssigneesThe Texas A&M University System, Shape Memory Medical, Inc.
InventorsDuncan J. Maitland, Todd L Landsman, John Horn, Landon Nash, Chung Yeh
Life of this patent
Estimating the term…
Abstract
An embodiment includes a process for treating an abdominal aortic aneurysm (AAA) endoleak with a shape memory polymer (SMP) foam device. First, a bifurcated stent graft is placed within the aneurysm while a micro guidewire is positioned within the aneurysm for future catheter access. Second, after placing the iliac graft extension, a catheter is introduced over wire to deliver embolic foams. Third, embolic foams expand and conform to the aneurysm wall. Fourth, embolic foams create a stable thrombus to prevent endoleak formation by isolating peripheral vessels from the aneurysm volume.
Claims20
A method comprising:
- implant a stent graft and a wire within a patient and adjacent one another;
- advance a first conduit over the wire and into the patient;
- insert a second conduit into the first conduit, wherein within the second conduit:
- (a) first, second, and third open-cell, polyurethane, thermoset, shape memory polymer (SMP) foams are simultaneously disposed;
- and (b) the first, second, and third SMP foams are arranged serially with respect to each other and are not fixedly coupled to each other;
- deploy the first SMP foam from the first conduit and into the patient at a first location;
- after deploying the first SMP foam, deploy the second SMP foam from the first conduit and into the patient at a second location;
- and
- after deploying the second SMP foam, deploy the third SMP foam from the first conduit and into the patient at a third location;
- wherein (a)(i) a first plane, orthogonal to a long axis of the first SMP foam, intersects both a proximal half of the first SMP foam and a first metal structure that is coupled to the first SMP foam;
- (a)(ii) an additional first plane, parallel to the first plane, intersects a distal half of the first SMP foam but does not intersect the first metal structure, (b)(i) a second plane, orthogonal to a long axis of the second SMP foam, intersects both a proximal half of the second SMP foam and a second metal structure that is coupled to the second SMP foam;
- (b)(ii) an additional second plane, parallel to the second plane, intersects a distal half of the second SMP foam but does not intersect the second metal structure, (c)(i) a third plane, orthogonal to a long axis of the third SMP foam, intersects both a proximal half of the third SMP foam and a third metal structure that is coupled to the third SMP foam;
- (c)(ii) an additional third plane, parallel to the third plane, intersects a distal half of the third SMP foam but does not intersect the third metal structure.
10 more elements
A method comprising:
- insert a conduit into a patient, wherein within the conduit:
- (a) first, second, and third open-cell, polyurethane, thermoset, shape memory polymer (SMP) foams are simultaneously disposed;
- and (b) the first, second, and third SMP foams are arranged serially with respect to each other and are not fixedly coupled to each other;
- deploy the first SMP foam from the conduit and into the patient at a first location;
- after deploying the first SMP foam, deploy the second SMP foam from the conduit and into the patient at a second location;
- and
- after deploying the second SMP foam, deploy the third SMP foam from the conduit and into the patient at a third location;
- wherein (a)(i) a first plane, orthogonal to a long axis of the first SMP foam, intersects a first metal structure that is connected to a proximal half of the first SMP foam;
- (a)(ii) an additional first plane, parallel to the first plane, intersects a distal half of the first SMP foam but does not intersect the first metal structure, (b)(i) a second plane, orthogonal to a long axis of the second SMP foam, intersects a second metal structure that is connected to a proximal half of the second SMP foam;
- (b)(ii) an additional second plane, parallel to the second plane, intersects a distal half of the second SMP foam but does not intersect the second metal structure, (c)(i) a third plane, orthogonal to a long axis of the third SMP foam, intersects a third metal structure that is connected to a proximal half of the third SMP foam;
- (c)(ii) an additional third plane, parallel to the third plane, intersects a distal half of the third SMP foam but does not intersect the third metal structure.
8 more elements
Dependencies are inferred from the claim text.