Evaluation of Safety and Effectiveness of the EMBLOK EPS During TAVR
Aortic Valve Stenosis, Aortic Valve Disease, Aortic Valve Insufficiency
About this trial
This is an interventional prevention trial for Aortic Valve Stenosis
Eligibility Criteria
Clinical Eligibility Criteria:
Clinical Inclusion Criteria:
Subjects must meet ALL the following criteria to be eligible for participation in the study:
- Subject is between 18 and 90 years of age.
- Subject meets FDA approved indications for TAVR procedure on a native aortic valve using an iliofemoral approach with a commercially approved transcatheter heart valve.
- Female subjects of childbearing potential must have a negative serum or urine pregnancy test within 48 hours prior to the index study procedure.
- Subject agrees to comply with all protocol-specified procedures and assessments.
- Subject or subject's legal representative signs an IRB approved informed consent form prior to study participation.
Clinical Exclusion Criteria:
Subjects will be excluded if ANY of the following criteria apply:
- Subjects with a previously implanted aortic or mitral valve bioprosthesis
- Subjects with hepatic failure (Child-Pugh class C).
- Subjects with hypercoagulable states that cannot be corrected by additional periprocedural heparin.
- Subjects who have a planned treatment with any other investigational device or procedure during the study period.
- Subjects planned to undergo any other cardiac surgical or interventional procedure (e.g., concurrent coronary revascularization) during the TAVR procedure or within 10 days prior to the TAVR procedure. NOTE: Diagnostic cardiac catheterization is permitted within 10 days prior to the TAVR procedure.
- Subject has experienced an acute myocardial infarction (World Health Organization [WHO] criteria) within 30 days of the planned index procedure.
- Subject requires an urgent or emergent TAVR procedure.
- Subjects with renal failure (estimated Glomerular Filtration Rate [eGFR] < 30 mL/min by the Modification of Diet in Renal Disease [MDRD] formula).
- Subject has documented history of stroke or transient ischemic attack within prior 6 months, or any prior stroke with a permanent major disability or deficit.
- Subject has an ejection fraction of 30% or less.
- Subject has a sensitivity to contrast media that cannot be adequately pre-treated.
- Subject has known allergy or hypersensitivity to any embolic protection device materials (e.g., nickel-titanium) or allergy to intravascular contrast agents that cannot be pre-medicated
- Subject has active endocarditis or an ongoing systemic infection defined as fever with temperature > 38°C and/ or white blood cell > 15,000 IU.
- Subjects undergoing therapeutic thrombolysis.
- Subject has history of bleeding diathesis or a coagulopathy or contraindications to anticoagulation and antiplatelet therapy.
- Subject is known or suspected to be pregnant, or is lactating.
- Subject is currently participating in another drug or device clinical study, or has other medical illnesses that may cause the subject to be non-compliant with the protocol or confound the data interpretation.
Anatomic Eligibility Criteria:
General Anatomic Exclusion Criteria:
Subjects meeting any of the following criteria will not be eligible for participation in the study:
- Non-iliofemoral approach for is required for the TAVR system (e.g., trans-axillary, trans-subclavian, trans-brachiocephalic, trans-carotid, trans-apical or trans-aortic access for TAVR is required).
- Subject peripheral anatomy is not compatible with contralateral iliofemoral access with an 11 French catheter (e.g., due to excessive tortuosity, stenosis, ectasia, dissection, or aneurysm).
- Ascending aorta length (from the site of filter placement to the aortic root) less than 7.5 cm.
- Diameter of the aorta at the intended site of Emblok filter deployment proximal to the brachiocephalic artery ostium is less than 25 mm or greater than 40 mm.
- Subjects with severe peripheral arterial, abdominal aortic, or thoracic aortic disease that precludes delivery sheath vascular access.
- Subjects in whom the aortic arch is heavily calcified, severely atheromatous, or severely tortuous.
Additional Anatomic Exclusion Criteria:
Subjects with any of the following criteria will be excluded from participation in the Randomized Cohort, but are eligible for participation in the Roll-In and Nested Registry cohorts (provided they meet all other eligibility criteria):
- Diameters of the arteries at the site of filter placement are < 9 or > 15 mm for the brachiocephalic artery or < 6.5 or >10 mm in the left common carotid.
- Brachiocephalic or carotid vessel with excessive tortuosity.
- Compromised blood flow to the right upper extremity, or other conditions that would preclude 6 Fr radial or brachial vascular access (e.g., excessive tortuosity)
- Arterial stenosis >70% in either the left common carotid artery or the brachiocephalic artery.
- Brachiocephalic or left carotid artery reveals significant stenosis, ectasia, dissection, or aneurysm at the aortic ostium or within 3 cm of the aortic ostium.
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Experimental
Active Comparator
EMBLOK™ Embolic Protection System
SENTINEL™ Cerebral Protection System
Device Description: The EMBLOK™ Embolic Protection System ("EMBLOK EPS") is a sterile, single use system designed to capture and remove debris (e.g., thrombus, calcium, atheroma) dislodged during transcatheter aortic valve replacement (TAVR) procedures. The device is currently for investigational use only. When Device Will Be Used: Roll-in: Prior to enrollment of the first randomized subject at each site, each site will enroll 2 Roll-In subjects, who will not be randomized but will receive the EMBLOK EPS during TAVR. Randomized: Up to 422 subjects meeting eligibility criteria will be randomized 1:1. The experimental "intervention" arm is utilizing EMBLOK EPS during TAVR (up to 211 subjects). Nested registry: Up to 50 subjects who meet clinical eligibility criteria and are anatomically suitable for the EMBLOK EPS, but whose anatomy precludes the use of the SENTINEL CPS.
Device Description: The control comparator is the commercially-available SENTINEL™ Cerebral Protection System ("SENTINEL CPS") (Boston Scientific Corp., Marlborough, MA, US), a dual-filter protection device designed to capture and remove debris dislodged during TAVR procedures. The SENTINEL CPS is indicated for use as an embolic protection device to capture and remove thrombus/debris while performing TAVR procedures. The diameters of the arteries at the site of filter placement should be between 9.0 mm - 15.0 mm for the brachiocephalic and 6.5 mm - 10.0 mm in the left common carotid. When Device Will Be Used: In the randomized cohort, up to 422 subjects meeting eligibility criteria will be randomized 1:1 (stratified by operative risk and study site). The active comparator "control" arm is utilizing SENTINEL CPS during TAVR (up to 211 subjects).