AngioSafe Peripheral CTO Crossing System Study (RESTOR-1 Study) (RESTOR-1)
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The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT04663867 |
Recruitment Status :
Recruiting
First Posted : December 11, 2020
Last Update Posted : November 25, 2022
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Peripheral Artery Occlusion Peripheral Arterial Disease | Device: AngioSafe Peripheral CTO Crossing System | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 100 participants |
Allocation: | N/A |
Intervention Model: | Single Group Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | Safety and Effectiveness Study of the AngioSafe Peripheral CTO Crossing System |
Actual Study Start Date : | February 1, 2021 |
Estimated Primary Completion Date : | February 2023 |
Estimated Study Completion Date : | February 2023 |
Arm | Intervention/treatment |
---|---|
Experimental: AngioSafe Peripheral CTO Crossing System Procedure |
Device: AngioSafe Peripheral CTO Crossing System
The AngioSafe Peripheral CTO Crossing System is intended to facilitate the intraluminal placement of guidewires beyond stenotic lesions, including chronic total occlusions (CTOs) in the peripheral vasculature. |
- Clinical Success is defined as Technical Success in the absence of device-related major adverse events through discharge or 24-hours post-procedure, whichever is sooner. [ Time Frame: 24 Hours ]
- Technical Success of AngioSafe Peripheral CTO Crossing System [ Time Frame: Procedure ]Defined as the ability of catheter to facilitate placement of a guidewire into the distal lumen.
- Procedural Success of AngioSafe Peripheral CTO Crossing System [ Time Frame: 30 Days ]Defined as Technical Success without a procedural complication within 30 days after the procedure. Procedural complication is defined as the need for open or repeat endovascular surgical repair in the treated limb, or a major bleeding event.
- Evaluation of intraluminal CTO crossing facilitated by the Peripheral CTO Crossing System, as assessed by an Intravascular Ultrasound (IVUS). [ Time Frame: Procedure ]
- The primary endpoint in the subgroup of the degree of calcification (none/focal/mild/moderate, severe). [ Time Frame: Procedure ]

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Ages Eligible for Study: | 22 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Able and willing to comply with protocol requirements and sign informed consent form
- ≥ 22 years of age
- Peripheral arterial disease defined by Rutherford Clinical Classification (Category 2-5)
- Peripheral artery disease in target extremity is confirmed by imaging (catheter angiography, computed tomographic angiography (CTA), and/or magnetic resonance angiography (MRA))
Angiographic Inclusion Criteria:
- Target lesion in native de novo common femoral artery (CFA), superficial femoral artery (SFA), and/or popliteal artery
- Vessel diameter(s) for target lesion is ≥ 3.0mm and ≤ 10mm
- Subject's target lesion is a severely stenosed segment of ≤ 300 mm that involves the CTO(s)
- Subject's target lesion involves at least one CTO that is 99-100% stenosed
- Subject has at least one vessel with run-off to the foot
Exclusion Criteria:
- Systemic infection or an infection in extremity of target lesion
- Target lesion within native vein or synthetic vessel grafts or in stent occlusion
- Planned intervention in the contralateral limb during the study
- Planned intervention in the target limb of the inflow vessels during the study
- Planned intervention of lower extremities after study procedure within 30-day follow-up visit
- Coagulopathy or bleeding diatheses, thrombocytopenia with platelet count less than 50,000/μl, or INR > 1.7
- Antiplatelet, anticoagulant, or thrombolytic therapy is contraindicated
- Allergy to contrast agents or medications used to perform endovascular intervention that cannot be adequately pre-treated
- Allergy to nickel, titanium, urethane, nylon, or silicone
- History of myocardial infarction within 30 days prior to enrollment/consent
- History of stroke within 30 days prior to enrollment/consent
- Chronic kidney disease (CKD) of stage 4 or greater based on an Estimated Glomerular Filtration Rate (eGFR) <30ml/Min, unless the subject is on chronic renal replacement therapy
- Hemoglobin levels <10g/dL verified by a lab test no older than 14 days prior to enrollment, unless the subject has a history of chronic anemia at a stable level, no recent bleeding diathesis or history of blood transfusion in the last six weeks
- Pregnant or nursing, for females of child-bearing potential (< 50 years of age)
- Participating in another interventional research study that may interfere with study endpoints
- Prior major amputation (above ankle) in target extremity
- Acute limb ischemia (ALI)
- Prior unsuccessful attempt to cross the target lesion
- Subject has had a procedure on the target limb or contralateral limb within 7 days
- Subject has had a procedure on the target limb or contralateral limb within the past 30 days and is unstable

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04663867
Contact: Mallik Thatipelli, MD | 669-400-8383 | mallik@angiosafe.com |

Principal Investigator: | Subhash Banerjee, MD | North Texas Veterans Healthcare System |
Responsible Party: | AngioSafe, Inc. |
ClinicalTrials.gov Identifier: | NCT04663867 |
Other Study ID Numbers: |
0071 |
First Posted: | December 11, 2020 Key Record Dates |
Last Update Posted: | November 25, 2022 |
Last Verified: | August 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | Yes |
Device Product Not Approved or Cleared by U.S. FDA: | Yes |
Peripheral Arterial Disease Peripheral Vascular Diseases Atherosclerosis Arteriosclerosis |
Arterial Occlusive Diseases Vascular Diseases Cardiovascular Diseases |