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Evaluation of the Cook Custom Aortic Endograft, the Zenith t-Branch Endovascular Graft, and Surgeon-Modified Endograft in Treating Aortic Pathologies

Not Applicable
Recruiting
Conditions
Suprarenal Aortic Aneurysm
Penetrating Aortic Ulcer
Thoracoabdominal Aortic Aneurysm
Juxtarenal Aortic Aneurysm
Interventions
Device: Zenith t-Branch Endovascular Graft
Device: Cook Custom Aortic Endograft
Device: Surgeon-Modified Endograft
Registration Number
NCT02043691
Lead Sponsor
University of Alabama at Birmingham
Brief Summary

This is a single-center study to evaluate the safety and effectiveness of three investigational devices, the Cook Custom Aortic Endograft, the Zenith t-Branch Endovascular Graft, and the Surgeon-Modified Endografts in the treatment of aortic pathologies involving the visceral vessels.

The three investigational devices offer an endovascular approach to treat complex aortic pathologies that cannot be treated with commercially available devices. This customized, endovascular approach has the potential to decrease hospital length of stay, pulmonary complications, and in-hospital mortality.

Detailed Description

Once the participant has signed the approved informed consent the following tests will be done to determine final subject eligibility and which device will be used:

Clinical Exam, Blood Tests, CT Scans (with and without contrast), Abdominal Device X-ray, and Angiography.

The participants will be followed for 5 years.

Recruitment & Eligibility

Status
RECRUITING
Sex
All
Target Recruitment
300
Inclusion Criteria

  • Juxtarenal, suprarenal and thoracoabdominal aortic pathology as follows in hemodynamically stable patients:

    1. Intact or contained ruptured aortic or aortoiliac aneurysms (atherosclerotic/degenerative or saccular) involving or in close approximation to the visceral segment of the aorta.

      1. Diameter >5.5 cm if asymptomatic, or 5.0 cm with enlargement of >0.5cm in 6 months.
      2. History of growth >0.5 cm per year
      3. Any size if ruptured or symptomatic

    2. Penetrating aortic ulcer (PAU)

      1. >2.0cm in depth
      2. Any size if contained ruptured or symptomatic

General

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Exclusion Criteria
  • Less than 18 years of age
  • Life expectancy less than 12 months based on the surgeon's assessment
  • Pregnant or breastfeeding or planning on becoming pregnant within 60 months
  • Inability or refusal to give informed consent
  • Unwilling or unable to comply with the follow-up schedule
  • Less than 30 days beyond primary endpoint for other investigative drug or device study

Medical Exclusion Criteria:

  • Known allergy to the device components (i.e. stainless steel, polyester, solder, gold, or nitinol)
  • History of anaphylactic reaction to contrast material that cannot be adequately premedicated
  • Systemic or local infection that may increase the risk of endovascular graft infection.
  • Baseline eGFR <30mL/min (calculated by the Modification of Diet in Renal Disease formula) and not on hemo- or peritoneal dialysis. If the patient is currently on dialysis, or is currently planning on initiating dialysis, then they may undergo repair.
  • History of connective tissue disorders.
  • Body habitus that would inhibit X-ray visualization of the aorta.
  • Major surgical or interventional procedure unrelated to the treatment of the aneurysm planned ≤30 days of the endovascular repair.
  • Unstable angina, defined as a progressive increase in symptoms, new onset at rest or nocturnal angina, or onset of prolonged angina.
  • Irreversible coagulopathy

Anatomical Exclusion Criteria:

  • Aortic transection due to acute trauma.
  • Aortic dissection.
  • Infectious ("mycotic") etiology of the aortic disease.
  • Significant occlusive disease or tortuosity precluding delivery of the device components.
  • Proximal Landing zone <20mm in length. The proximal landing zone can be within zones 2 through 8, with least 20mm of proximal seal and fixation in aorta or Dacron.
  • Proximal neck, defined as the thoracic aorta distal to the native left carotid artery, measured outer wall to outer wall on a sectional image (CT) >41 mm in diameter or < 18 mm in diameter
  • Distal landing zone <20mm in length if the landing zone is in the aorta, or <20mm if the landing zone is in the iliac arteries or in Dacron (in the event the patient has had a previous or concomitant aortic or aorto-iliac reconstruction).
  • Untreatable branch vessel stenosis.
  • Anatomy that would not allow maintenance of at least one patent hypogastric artery.
  • Signs that the inferior mesenteric artery is indispensable (i.e. angiographic visualization or a large IMA, filling of SMA via collaterals, stenosis of celiac or SMA or oblique views) and the indispensible IMA is not amenable to treatment with a graft branch or fenestration.
  • Branching, duplication, aneurysm or untreatable stenosis of the celiac, SMA or renal arteries that would preclude implantation of the investigational devices.
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Study & Design

Study Type
INTERVENTIONAL
Study Design
PARALLEL
Arm && Interventions
GroupInterventionDescription
Zenith t-Branch Endovascular GraftZenith t-Branch Endovascular GraftParticipants will receive the following: Clinical Exam, Blood Tests, CT Scans (with and without contrast) or Ultrasound, Abdominal Device X-ray, and Angiography. These tests will aid in the sizing of the the Zenith t-Branch Endovascular Graft. The Zenith t-Branch Endovascular Graft is a tubular graft with four branches and a covered stent at the proximal end that contains barbs for proximal fixation of the device. The graft is designed to be connected with celiac, superior mesenteric and two renal arteries via self-expanding covered bridging stents.
Cook Custom Aortic EndograftCook Custom Aortic EndograftParticipants will receive the following: Clinical Exam, Blood Tests, CT Scans (with and without contrast) or Ultrasound, Abdominal Device X-ray, and Angiography. These tests will aid in the design of the Cook Custom Aortic Endograft. The Cook Custom Aortic Endograft has a variable design such that seal and fixation may be obtained proximal and distal to pathology in the juxtarenal aorta, suprarenal or thoracoabdominal aorta. Grafts may include a combination of up to 5 fenestrations and branches.
Surgeon-Modified EndograftSurgeon-Modified EndograftParticipants will receive the following: Clinical Exam, Blood Tests, CT Scans (with and without contrast) or Ultrasound, Abdominal Device X-ray, and Angiography. These tests will aid in the design of the Surgeon-Modified Endografts. These will be created in the operating room by modifying a commercially-available Cook Alpha Thoracic Endograft or Cook Zenith Infrarenal Aortic Device such that seal and fixation may be obtained proximal and distal to pathology in the juxtarenal aorta, suprarenal or thoracoabdominal aorta. Grafts may include a combination of up to 5 fenestrations and branches.
Primary Outcome Measures
NameTimeMethod
Rate of major adverse events at 30 days post primary procedure30 days post primary procedure
Secondary Outcome Measures
NameTimeMethod
Number of patients who underwent tracheostomy to treat pulmonary failure at 30 days post primary procedure30 days post primary procedure
Number of major adverse events at 6 months post primary procedure6 months post primary procedure
Average length of ventilation past 48 hours in peri-operative periodPeri-operative
Number of major adverse events at 12 months post procedure12 months post primary procedure
Average ICU length of stay in peri-operative periodPeri-operative
Number of patients who developed postoperative pneumonia at 30 days post primary procedure30 days post primary procedure
Rate of all-cause mortality at 30 days post primary procedure30 days post primary procedure
Number of subjects requiring ventilation more than 48 hours in peri-operative periodPeri-operative
Number of patent treated branch vessels at 30 days post primary procedure30 days post primary procedure
Number of major adverse events at 2 years post primary procedure2 years post primary procedure
Number of patients who underwent tracheostomy to treat pulmonary failure at 12 months post primary procedure12 months post primary procedure
Number of patent treated branch vessels at 4 years post primary procedure4 years post primary procedure
Rate of all-cause mortality in peri-operative periodPeri-operative
Number of subjects requiring reintubation in peri-operative periodPeri-operative
Freedom from reintervention at 30 days post primary procedure30 days post primary procedure
Number of patent treated branch vessels at 5 years post primary procedure5 years post primary procedure
Freedom from reintervention at 6 months post primary procedure6 months post primary procedure
Freedom from reintervention at 12 months post primary procedure12 months post primary procedure
Freedom from reintervention at 3 years post primary procedure3 years post primary procedure
Freedom from reintervention at 4 years post primary procedure4 years post primary procedure
Number of patients with loss of device integrity at 30 days post primary procedure30 days post primary procedure
Number of major adverse events at 3 years post primary procedure3 years post primary procedure
Number of major adverse events at 5 years post primary procedure5 years post primary procedure
Number of patients who developed postoperative pneumonia at 12 months post primary procedure12 months post primary procedure
Number of patent treated branch vessels at 6 months post primary procedure6 months post primary procedure
Number of patients with loss of device integrity at 2 years post primary procedure2 years post primary procedure
Number of patients with loss of device integrity at 3 years post primary procedure3 years post primary procedure
Number of patients with loss of device integrity at 4 years post procedure4 years post procedure
Number of major adverse events at 30 days post primary procedure30 days post primary procedure
Number of subjects that achieve treatment success at 12 months post procedure12 months post procedure

Treatment success is defined as procedural technical success and patent treated branch vessels at 12 months post procedure, device integrity, and freedom from both reintervention and aortic enlargement ≤5mm as compared to baseline at 12 months post primary procedure.

Technical success is defined as successful exclusion of the diseased aortic segment without a clinically significant type I or type III endoleak and patent treated branch vessels at the end of the procedure without the need for unanticipated corrective interventions.

Number of patients with loss of device integrity at 6 months post primary procedure6 months post primary procedure
Number of patients with loss of device integrity at 12 months post primary procedure12 months post primary procedure
Number of patients with loss of device integrity at 5 years post primary procedure5 years post primary procedure
Freedom from reintervention at 2 years post primary procedure2 years post primary procedure
Number of major adverse events at 4 years post primary procedure4 years post primary procedure
Number of patients who underwent tracheostomy to treat pulmonary failure at 6 months post primary procedure6 months post primary procedure
Number of patients who developed postoperative pneumonia at 6 months post primary procedure6 months post primary procedure
Number of patent treated branch vessels at 12 months post primary procedure12 months post primary procedure
Number of patent treated branch vessels at 2 years post primary procedure2 years post primary procedure
Number of patent treated branch vessels at 3 years post primary procedure3 years post primary procedure
Freedom from reintervention at 5 years post primary procedure5 years post primary procedure

Trial Locations

Locations (1)

University of Alabama at Birmingham

🇺🇸

Birmingham, Alabama, United States

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