Valor II: The Valiant Thoracic Stent Graft System Clinical Study

This study has been completed.
Information provided by (Responsible Party):
Medtronic Endovascular Identifier:
First received: December 15, 2006
Last updated: July 30, 2015
Last verified: July 2015

December 15, 2006
July 30, 2015
December 2006
August 2010   (final data collection date for primary outcome measure)
  • Primary Effectiveness Endpoint: Percentage of Participants With Successful Aneurysm Treatment. [ Time Frame: At 12-month post procedure ] [ Designated as safety issue: No ]

    Percentage of subjects with absence of both: a) aneurysm growth of more than 5 mm at the 12-month visit relative to the 1-month visit; and b) secondary procedure due to type I or III endoleak performed or recommended at or before the 12-month visit. Success means a subject experienced neither a nor b.

    Type I: endoleak in continuity with the proximal anchoring site(proximal endoleak) or the distal anchoring site(distal endoleak)of the device.

    Type III: endoleak is present in the mid-graft region due to defect of fabric or between the segments of the modular graft (junctional endoleak).

  • Primary Safety Endpoint: All-Cause Mortality. > > The Percentage of Participants Who Died of All Causes. [ Time Frame: Within 12-months post treatment ] [ Designated as safety issue: Yes ]

    The percentage of participants who died within 12-months of the initial procedure, regardless of the cause of death.


    > Note: All-cause mortality endpoint is not directly related to successful aneurysm treatment, which pertains to the absence of aneurysm growth and secondary procedure due to Type I and III endoleaks.

Successful aneurysm treatment at 12 month follow-up is defined as the absence of both: Aneurysm growth > than 5 mm at the 12 month visit relative to the 1 month visit. Type I and Type III endoleak where a secondary procedure was performed or recommended.
Complete list of historical versions of study NCT00413231 on Archive Site
  • Secondary Endpoints, Within 30 Days Post Treatment [ Time Frame: within 30 days post treatment ] [ Designated as safety issue: Yes ]
    • Peri-Operative Mortality
    • Paraplegia
    • Paraparesis
    • Secondary procedures due to an endoleak after discharge
    • One (1) or more Major Adverse Event(s) (MAE)
  • Secondary Endpoints, Within 12 Months Post Treatment [ Time Frame: Within 12 months post treatment ] [ Designated as safety issue: Yes ]
    • Aneurysm-Related Mortality
    • Secondary Endovascular Procedures due to an endoleak after 30 days post treatment
    • Conversion to open surgical repair
    • Migration of the stent graft
    • Loss of patency of the stent graft
    • Aneurysm rupture
    • Endoleaks
    • One (1) or more Major Adverse Event(s) (MAE)
  • Successful Deployment and Delivery of the Stent Graft [ Time Frame: N/A (at implant) ] [ Designated as safety issue: No ]
    Successful deployment and delivery of the stent graft is used to measure effectiveness
  • Will evaluate the percentage of patients that experience adverse events within 30 days and 12 months after treatment,successful implantation of the device and health care utilzation
  • The secondary endpoints will be evaluated all time points in the study will also be evaluated at all the follow-up intervals over 5 years.
Not Provided
Not Provided
Valor II: The Valiant Thoracic Stent Graft System Clinical Study
The Valiant Thoracic Stent Graft System. The Evaluation of the Clinical Performance of the Valiant Thoracic Stent Graft System in the Treatment of Descending Thoracic Aneurysms of Degenerative Etiology in Subjects Who Are Candidates for Endovascular Repair.
The aorta is a large blood vessel that carries blood away from the heart to the organs in the rest of the body. An aneurysm is a weakening in the artery wall that will become a bulge in the aorta. If left untreated, this bulge may continue to grow larger and may rupture (break open) with fatal consequences. In this research study we are investigating a device that can be placed in the aorta to exclude the weakened part of the artery wall and restore blood flow. Information will be collected on the performance of the device for 5 years.
Not Provided
Not Provided
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Thoracic Aortic Aneurysm
Device: Valiant Thoracic Stent Graft System
Surgical procedure in which a device is implanted inside the aorta, isolating the diseased area (aneurysm).
Other Name: Valiant device; Valiant stent graft.
Experimental: Valiant Thoracic Stent Graft System

160 subjects were enrolled into the study, including 157 subjects treated with the study device and three subjects classified as intent-to-treat who did not receive the study device.

There were no other arms for this study.

Intervention: Device: Valiant Thoracic Stent Graft System
Not Provided

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
October 2014
August 2010   (final data collection date for primary outcome measure)


  • Subject is between the age of 18 and 85.
  • Subject must be considered a candidate for elective surgical repair of the thoracic aortic aneurysm (i.e., low-to-moderate risk at the time of implant.
  • If Subject is female of childbearing potential she must have a negative pregnancy test within 7 days befor0e the implanting procedure.
  • Subject has a Descending Thoracic Aneurysm that is: with a maximum diameter of 5 cm or larger; or is > 2 times the diameter of the non-aneurysmal thoracic aorta; or
  • Subject's anatomy must meet the protocol parameters
  • Thoracic aortic lesion is confirmed, at a minimum, by diagnostic contrast enhanced computerized tomography (CT) with optional 3-D reconstruction, and/or contrast enhanced Magnetic Resonance Angiogram obtained within the previous four (4) months prior to screening.
  • Subject is able and willing to comply with the protocol and undergo follow-up requirements.
  • Subject or Subject's legal representative understands and has signed an Informed Consent approved by the Sponsor and by the IRB for this study.


  • History of thoracic aneurysm with a contained rupture.
  • History of connective tissue disease
  • Systemic infection
  • Previous stent or stent graft or previous surgical repair in the descending thoracic aorta.
  • History of treatment of an infra-renal aneurysm
  • History of bleeding
  • Subject has had or plans to have a major surgical procedure within 30 days before or after the Valiant Stent Graft System implantation. This does not include planned procedures that are needed for the safe and effective placement of the stent graft.(i.e., carotid/subclavian transposition, bypass procedure).
  • Subject has had a recent MI or cerebral vascular accident (CVA) (within 3 months).
  • Subject is currently participating in an investigational drug or device clinical trial.
  • Subject has a known allergy or intolerance to the device components.
  • Subject has a known hypersensitivity or contraindication to anticoagulants or contrast media, which is not amenable to pre-treatment.
18 Years to 85 Years
Contact information is only displayed when the study is recruiting subjects
United States
Investigational Plan #078
Medtronic Endovascular
Medtronic Endovascular
Not Provided
Principal Investigator: Ronald Fairman, MD University of Pennsylvania
Medtronic Endovascular
July 2015

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP