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NCT Number: NCT07611968

Prospective Evaluation of Physician Modified Endografts for Aortic Disease

The purpose of this research is to assess safety and preliminary effectiveness of the Physician-Modified Terumo Treo Abdominal Stent-Graft System.

Recruiting

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Key information

Age range

50 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Mayo Clinic

Jacksonville, Florida, 32224, United States

Location status: Recruiting

Location contact

Pia Geisselmaier

CONTACT

[email protected]

904-953-2077

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • An aneurysm with a maximum diameter of >5.5cm in males and >5.0cm in females in diameter just proximal to the aneurysm using orthogonal (i.e., perpendicular to the centerline) measurements
  • Aneurysm with a history of growth > 0.5 cm in 6 months
  • Saccular aneurysm deemed at significant risk for rupture
  • Symptomatic aneurysm
  • Extent of aorta to be treated: type II, III and IV thoracoabdominal.
  • Subject is at high-risk of morbidity and mortality with open surgical repair as defined by FEV1 of <1 liter or uncorrectable coronary disease, frailty, hostile abdomen.
  • Iliac or femoral access vessel morphology that is compatible with vascular access techniques, devices or accessories, with or without use of a surgical conduit.
  • Non-aneurysmal aortic segment proximal to the aneurysm (neck) with a:
  • Minimum neck length of 15mm
  • Diameter in the range of 17-32
  • Minimum branch vessel diameter greater than 5 mm
  • Iliac artery distal fixation site
  • An inside diameter of 8mm - 13mm and a length of ≥ 10mm or
  • an inside diameter of > 13mm - 20mm and a length of ≥ 15mm
  • Age: ≥50 years old

Exclusion criteria

  • Can be treated in accordance with the instructions for use with a legally marketed endovascular prosthesis
  • Is eligible for enrollment in a manufacturer-sponsored IDE at the investigational site
  • Unwilling to comply with the follow-up schedule
  • Inability or refusal to give informed consent by subject or legal representative
  • Subject is pregnant or breastfeeding
  • Ruptured aneurysms
  • Prior aortic repair
  • Patient is eligible for treatment with an FDA-approved marketed device and patient can enroll in a manufacturer-sponsored clinical study at our institution or is willing and eligible to participate in a study with a manufacturer-made device at another institution.
  • Known sensitivities or allergies to the materials of construction of the devices, including nitinol, polyester, PTFE, stainless steel, platinum/iridium, tantalum markers.
  • Known hypersensitivity or contraindication to anticoagulation or contrast media that cannot be adequately medically managed
  • Uncorrectable coagulopathy
  • Body habitus that would inhibit x-ray visualization of the aorta or exceed the safe capacity of the equipment
  • Subject has had a major surgical or interventional procedure unrelated to the treatment of the aneurysm planned < 30 days of endovascular repair
  • Unstable angina (defined as angina with a progressive increase in symptoms, new onset at rest or nocturnal angina)
  • Systemic or local infection that may increase the risk of endovascular graft infection
  • Baseline creatinine greater than 2.0 mg/dL
  • Thrombus or excessive calcification within the neck of the aneurysm
  • Branch stenosis >50% not amenable to endovascular preparation

Treatment and study plan

Physician-Modified Terumo Treo Abdominal Stent-Graft System

Device

A physician modified Terumo Treo abdominal stent-graft system will be used during repair surgery for type II, III and IV thoracoabdominal aortic aneurysms.

Primary outcomes

  1. Proportion of study subjects with treatment success at 1 year

    Time frame: 1 year

    Treatment success is defined as freedom from the following:

    • Aneurysm enlargement: >5mm as compared to any previous CT measure using orthogonal (i.e., perpendicular to the centerline) measurements.
    • Aneurysm rupture
    • Aneurysm-related mortality
    • Conversion to open repair
    • Secondary intervention for migration, Type I and III endoleaks, device integrity failure (e.g., fracture), and patency-related events (i.e., device component stenosis or occlusion and embolic events)
    • Graft infection
    • Disabling Stroke
    • Permanent dialysis

    Results are reported as a percentage

Secondary outcomes

  1. Proportion of procedures that achieve technical success

    Time frame: 1 year

    Technical success is defined as:

    • Successful access to the arterial system using remote arterial exposure, percutaneous technique, or open surgical conduits
    • Successful delivery and Deployment at the intended implantation site
    • Successful side branch catheterization and placement of bridging stents with restoration and maintenance of flow in all intended target vessels.
    • Successful withdrawal of the delivery system
    • Patency of all endovascular graft and stent components
    • Absence of device deformations requiring unplanned placement of an additional device
    • Absence of Type I and III endoleaks at completion angiography that extends beyond 30 days by confirmatory imaging (CTA, MRA or duplex ultrasound)

    Results are reported as a percentage

Study contacts

Contact information is provided by the study sponsor or research team.

Pia Geisselmaier

CONTACT

[email protected]

904-953-2077

Sponsors and collaborators

Lead sponsor

Mayo Clinic

Other

Registry information

Important dates

Study start
2026
Primary completion
2028
Study completion
2028
First posted
May 28, 2026
Registry last updated
Jul 13, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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