RecruitingNot ApplicableNCT07276711

CAPTURE-2: Controlled Arterial Protection to Ultimately Remove Embolic Material

Controlled Arterial Protection to Ultimately Remove Embolic Material

Sponsor

EmStop Inc

Enrollment

663 participants

Start Date

May 12, 2026

Study Type

INTERVENTIONAL

Conditions

Aortic Valve Disease Aortic Stenosis Aortic Valve Stenosis

Summary

The objective of this study is to demonstrate safety and efficacy of the EmStop Embolic Protection System when used as indicated to capture and remove thrombus/debris during self-expanding transcatheter aortic valve replacement (TAVR) procedures.

Eligibility

Min Age: 22 Years

Inclusion Criteria16

Age ≥ 22 years at the time of consent
Meets FDA-approved indications for elective transfemoral self-expanding transcatheter aortic valve replacement (TAVR) procedure on a native or non-native (valve-in-valve) aortic valve. Note: Due to Neurologist availability and importance of capturing the neurological assessments, procedures must be performed Monday-Thursday.
Left ventricular ejection fraction ≥ 30% as confirmed by echocardiogram
Willing and able to provide written informed consent and written HIPAA authorization prior to initiation of study procedures
Willing and able to comply with the protocol-specified procedures and assessments
Echocardiogram including left ventricular ejection fraction ≥ 30% within 6 months (180 days) prior to the index procedure and prior to randomization to confirm adequate cardiac function.
Ascending aorta length ≥8 cm
Femoral and iliac artery minimal lumen diameter of ≥ 8.0 mm
Ascending aorta/aortic arch diameter is ≥25 or ≤40 mm.
Ascending aorta or aortic arch exhibits ≤ Grade 1 atheromatous disease and limited wall calcification
\. Subject anatomy, excluding bovine arch anatomy, is compatible with correct device positioning with:
Artery diameter is 9-15 mm for the brachiocephalic artery and 6.5-10 mm in the left common carotid artery
Arterial stenosis <70% in either the left common carotid artery or the brachiocephalic artery
Brachiocephalic or left carotid artery without significant stenosis, ectasia, dissection, or aneurysm at the aortic ostium or within 3 cm of the aortic ostium
Adequate blood flow to the right upper extremity
Access vessels without excessive tortuosity

Exclusion Criteria17

Requires use of a balloon-expandable transcatheter aortic valve for the index procedure
Documented history of stroke or transient ischemic attack (TIA) within the prior 6 months, or any prior stroke with a permanent major disability or deficit (National Institute of Health Stroke Scale \[NIHSS\] >1 at baseline)
Left ventricular ejection fraction <30%, cardiogenic shock, or hypotension requiring inotropes or mechanical circulatory support, within 3 months prior to index procedure
Acute myocardial infarction (MI) within 30 days of the planned index procedure
Planned to undergo any other open cardiac surgical or left heart interventional procedure (e.g., concurrent coronary revascularization) during the TAVR procedure or within 30 days prior to the TAVR procedure. The need for a postoperative pacemaker implant after TAVR is not exclusionary.
Renal failure, defined as estimated glomerular filtration rate (eGFR) <30 mL/min
Hypercoagulable state that cannot be corrected by additional periprocedural heparin
History of intolerance, allergic reaction, or contraindication to any of the study medications, including heparin, aspirin, clopidogrel, or a sensitivity to contrast media or anesthesia that cannot be adequately pre-treated
Undergoing therapeutic thrombolysis
History of bleeding diathesis or major coagulopathy
Hepatic failure (Child-Pugh class C)
Active endocarditis or ongoing systemic infection, defined as fever (>38°C) and/or WBC >15,000 IU
Known allergy to any materials used in the EmStop system (e.g., nitinol)
Currently participating in another drug or device clinical study
Known or suspected to be pregnant, or is lactating; women of child bearing age must have a negative serum or urine pregnancy test within 48 hours prior to the index study procedure
Vulnerable subject populations (e.g., incarcerated or cognitively challenged adults)
Any other clinical reasons deemed by the investigators of the study in which the patient would not be an appropriate candidate for the study