RecruitingNot ApplicableNCT04471909

NEXUS Aortic Arch Clinical Study to Evaluate Safety and Effectiveness

A Multi-arm, Multi-Center, Non-Randomized, Prospective, Clinical Study to Evaluate the Safety and Effectiveness of the NEXUS Aortic Arch Stent Graft System in Treating Thoracic Aortic Lesions Involving the Aortic Arch


Sponsor

Endospan Ltd.

Enrollment

110 participants

Start Date

Oct 20, 2020

Study Type

INTERVENTIONAL

Conditions

Summary

Prospective, non-randomized, multi-center clinical investigation of the NEXUS™ Aortic Arch Stent Graft System (NEXUSTM) for the treatment of thoracic aortic lesions involving the aortic arch with a proximal landing zone, native or previously implanted surgical graft, in the ascending aorta and with a brachiocephalic trunk native landing zone.


Eligibility

Min Age: 18 Years

Inclusion Criteria35

  • Male and female age ≥ 18.
  • Proximal/ascending native or previously implanted surgical graft landing zone of appropriate length
  • Proximal/ascending native or previously implanted surgical graft landing zone of appropriate diameter
  • Distal/descending native landing zone of appropriate length
  • Distal/descending native landing zone of appropriate diameter
  • Brachiocephalic trunk native landing zone of appropriate length
  • Brachiocephalic trunk native landing zone of appropriate diameter
  • Appropriate take off angle between the Brachiocephalic Artery and the Aortic Arch perpendicular
  • Appropriate aortic arch perpendicular diameter
  • Chronic dissection with at least one of the following conditions:
  • An aortic aneurysm with a maximum diameter ≥ 55 mm
  • Rapidly expanding false lumen (growth of \> 0.5 cm/6 months)
  • Compressed true lumen associated with end organ malperfusion
  • Symptomatic
  • Aneurysm with at least one of the following conditions:
  • Dilatation of the aortic arch larger than 5 cm in diameter for subject with fusiform aneurysm
  • Dilatation of the aortic arch is 1.5 times the normal diameter for subjects ascending or descending
  • Dilation of the aortic arch larger than 2.5 cm for subject with saccular aneurysm
  • Symptomatic aneurysm of the aortic arch
  • Aortic diameter growth rate \> 5mm per 6 months
  • Postoperative pseudoaneurysm expanding from anastomotic suture lines
  • Penetrating aortic ulcer with at least one of the following:
  • Symptomatic
  • Ulcer demonstrates expansion
  • Intramural hematoma with at least one of the following:
  • Symptomatic (persistent pain)
  • Transverse or longitudinal expansion on serial imaging
  • In the event of a lesion in the ascending aortic, the proximal/ascending native or previously implanted surgical graft the landing zone must be appropriate
  • Femoral / iliac artery diameter as documented by CTA or MRA that allows endovascular access to the diseased site with a 20 Fr. delivery catheter.
  • Access vessels morphology suitable for endovascular repair in terms of tortuosity, calcification and angulation, documented by CTA/MRA.
  • Brachial/Axial Artery diameter that allows endovascular access suitable for 7 Fr.
  • Subject is considered an appropriate candidate for an elective surgery.
  • Subject is considered to be at high risk for open repair, as determined by the investigator.
  • Access vessels, iliac/femoral \& brachial/axillary compatible with vascular access techniques (femoral cutdown or percutaneous), devices, and /or accessories.
  • Subject is willing and able to comply with procedures specified in the protocol and is able to return for follow-up visits as specified by the protocol.

Exclusion Criteria31

  • Acute dissection
  • Lesions that can be safely treated with TEVAR landing in zone 2 (with or w/o LSA vascularization)
  • Required emergent treatment, e.g., trauma, rupture
  • Acute vascular injury of the aorta due to trauma
  • Aortic rupture or unstable aneurysm
  • Received a previous stent or stent graft in the treated area (including planned landing area)
  • Required surgical or endovascular treatment of an infra-renal aneurysm at time of implantation
  • Planned major surgical or interventional procedure at time of screening, to be performed after the NEXUS™ implantation.
  • Any major surgical or interventional procedure 6 weeks before the NEXUS™ implantation, exclusive of planned procedures that are needed for the safe and effective placement of the stent graft (e.g. supra-aortic bypass).
  • Subject has had a myocardial infarction (MI) or cerebral vascular accident (CVA) within 90 days prior to the planned implantation
  • Subjects with severe aortic valvular insufficiency as determined by echocardiography
  • Mechanical valve that preclude safe delivery of NEXUS™
  • Known Connective tissue disease (e.g., Marfan's or Ehler's-Danlos syndromes)
  • Subject has an active systemic infection at the time of the procedure documented by pain, fever, drainage, positive culture
  • Pregnant
  • Life expectancy of less than 2 years
  • Unsuitable vascular anatomy
  • Subject who have a previously implanted surgical wrap of the ascending aorta
  • Any medical condition that, according to the investigator's decision, might expose the subject to increased risk by the investigational device or procedure.
  • An aneurysm that is mycotic, inflammatory or suspected to be infected.
  • Subject with hostile groins/axilla (scarring, obesity, or previous failed puncture) unless conduit are used.
  • Subjects with severe atherosclerosis, severe calcification or extensive intraluminal thrombus of the aorta or in the brachiocephalic trunk
  • Subject is suffering from unstable angina or NYHA classification III and IV.
  • Subject has a known hypersensitivity or contraindication to anticoagulants, antiplatelets, or contrast media, which is not amenable to pre-treatment.
  • Subject with a contraindication to undergo angiography
  • Subject with known sensitivities or allergies to the device materials (including Nitinol \[NiTi\], polyester fabric \[PET\], tantalum \[TA\])
  • Clinical conditions that severely inhibit x-ray visualization of the Aorta.
  • Subject has history of bleeding diathesis or coagulopathy that may limit the use of dual antiplatelet or anticoagulant therapy by the decision of the investigator
  • Acute renal failure; chronic renal failure (excluding dialysis); Creatinine \> 2.00 mg/dl
  • Any other medical, social, or psychological issues that in the opinion of the investigator preclude them from receiving this treatment, or the procedures and evaluations pre- and post- treatment.
  • Active participation in another clinical study that has not completed primary endpoint(s) evaluation or that clinically interferes with the endpoints in this study, or subject is planning to participate in such study prior to the completion of this study.

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Interventions

DEVICENEXUS Aortic Stent Graft System

Arch Stent Graft, whose cranial narrow end is intended to be deployed into the Brachiocephalic artery and whose distal end is intended to be deployed into the Descending Thoracic Aorta. Ascending Stent Graft intended to be deployed in the Ascending Aorta. OPTIONAL: Descending Extension can be used in case the aortic lesion elongates further distally and out of the covered length offered by the Arch Stent Graft. Multiple Descending Extensions can be used if needed to cover the entire length of the lesion.


Locations(32)

University of Alabama Birmingham

Birmingham, Alabama, United States

University of California San Diego Medical Center

La Jolla, California, United States

UC Davis Health

Sacramento, California, United States

Stanford University School of Medicine

Stanford, California, United States

University of Colorado

Aurora, Colorado, United States

Hartford Hospital

Hartford, Connecticut, United States

MedStar Washington Hospital

Washington D.C., District of Columbia, United States

Advent Health Orlando

Orlando, Florida, United States

Emory University

Atlanta, Georgia, United States

The University of Chicago

Chicago, Illinois, United States

Ascension St. Vincent

Carmel, Indiana, United States

University of Maryland

Baltimore, Maryland, United States

Tufts Medical Center

Boston, Massachusetts, United States

University of Michigan

Ann Arbor, Michigan, United States

Washington University School of Medicine

St Louis, Missouri, United States

The Mount Sinai Medical Center

New York, New York, United States

Northwell Health Lenox Hill Hospital

New York, New York, United States

University of North Carolina

Chapel Hill, North Carolina, United States

Atrium Health

Charlotte, North Carolina, United States

Duke University Medical Center

Durham, North Carolina, United States

The Lindner Research Center

Cincinnati, Ohio, United States

University Hospitals of Cleveland

Cleveland, Ohio, United States

Oregon Health

Portland, Oregon, United States

University of Pennsylvania

Philadelphia, Pennsylvania, United States

Lankenau Medical Center

Wynnewood, Pennsylvania, United States

Medical University of South Carolina

Charleston, South Carolina, United States

Ballad Health

Kingsport, Tennessee, United States

Vanderbilt University Medical Center

Nashville, Tennessee, United States

Baylor Scott and White

Plano, Texas, United States

Sentara Norfolk General Hospital

Norfolk, Virginia, United States

Carilion Clinic

Roanoke, Virginia, United States

Auckland City Hospital

Auckland, Grafton, New Zealand

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