Controlled Arterial Protection to Ultimately Remove Embolic Material

Aortic Valve Stenosis Clinical Trial

— CAPTURE-1  

Official title:

Controlled Arterial Protection to Ultimately Remove Embolic Material

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT06103591
• Other study ID #: EMS-CL-5000
• Status: Recruiting
• Phase: N/A
• Start date: December 27, 2023
• Est. completion date: March 2024

Study information

• Verified date: February 2024
• Source: EmStop Inc
• Contact: Scott Thome
• Phone: 320-420-1992
• Email: thome.scott62[@]gmail.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The objective of this study is to demonstrate device feasibility, safety and investigate performance of the EmStop Embolic Protection System when used as indicated in 15 subjects at 2 investigational sites in the U.S.

Description:

The investigation is a prospective, multi-center, single arm feasibility study. Subjects will undergo treatment with a currently marketed TAVR device and the EmStop Embolic Protection System and will then be followed to 30 days post-procedure. This is a treatment-only feasibility investigation intended to capture and characterize outcomes, especially safety outcomes, with the EmStop System.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 15
• Est. completion date: March 2024
• Est. primary completion date: March 2024
• Accepts healthy volunteers: No
• Gender: All
• Age group: 21 Years to 90 Years

Eligibility

Inclusion Criteria:

Clinical & Angiographic Inclusion Criteria

1. Between 21 and 90 years of age at the time of consent

2. Meets FDA approved indications for transcatheter aortic valve replacement (TAVR) procedure on a native aortic valve using a commercially available Abbott or Medtronic transcatheter heart valve

3. Willing and able to provide written informed consent and written HIPAA authorization prior to initiation of study procedures

4. Willing and able to comply with the protocol-specified procedures and assessments

5. Subject anatomy is compatible with correct device deployment and positioning with:

• Ability to achieve access with a 21 French equivalent femoral access sheath
• Ascending aorta length =8 cm
• Ascending aorta/aortic arch diameter is =25 or =40 mm
• Ascending aorta or aortic arch exhibits = Grade 1 atheromatous disease and limited wall calcification

Exclusion Criteria:

1. Requires urgent or emergent TAVR procedure

2. Contraindicated to MRI

3. Previously implanted aortic or mitral valve bioprosthesis

4. Hepatic failure (Child-Pugh class C)

5. Hypercoagulable state that cannot be corrected by additional periprocedural heparin

6. Planned to undergo any other cardiac surgical or interventional procedure (e.g., concurrent coronary revascularization) during the TAVR procedure or within 30 days prior to the TAVR procedure. NOTE: Diagnostic cardiac catheterization is permitted up until baseline MRI is obtained. Once baseline MRI is obtained, no additional intra-aortic or intracardiac procedure may occur.

7. Acute myocardial infarction within 30 days of the planned index procedure

8. Renal failure, defined as estimated glomerular filtration rate (eGFR) <30 mL/min

9. Documented history of stroke or TIA within the prior 6 months, or any prior stroke with a permanent major disability or deficit (NIHSS >1 at baseline)

10. Left ventricular ejection fraction =30% within 3 months prior to procedure

11. 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

12. Known allergy or sensitivity to nickel-titanium

13. Active endocarditis or ongoing systemic infection, defined as fever (>38°C) and/or white blood cell (WBC) >15,000 IU

14. Undergoing therapeutic thrombolysis

15. History of bleeding diathesis or a coagulopathy

16. Known or suspected to be pregnant, or is lactating; female subjects of child-bearing potential must have a negative serum or urine pregnancy test within 48 hours prior to the index study procedure.

17. Currently participating in another drug or device clinical study

18. Any other clinical reason, as deemed by the investigators of the study, by which the patient would not be an appropriate candidate for the study

19. Vulnerable subject populations (e.g., incarcerated or cognitively challenged adults)

Related Conditions & MeSH terms

• Aortic Valve Stenosis

Intervention

Device:
• The EmStop Embolic Protection System (EmStop System)
The EmStop Embolic Protection System (EmStop System) is a catheter-based filter system that captures and removes debris dislodged during transcatheter aortic valve replacement (TAVR) procedures.

Locations

Country	Name	City	State
United States	Mission Health	Asheville	North Carolina
United States	Centennial Medical Center	Nashville	Tennessee

Sponsors (2)

Lead Sponsor	Collaborator
EmStop Inc	Bright Research Partners

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Device procedural success	Defined as successful insertion, deployment, positioning, and removal of the EmStop System in the absence of device interference	Procedural
Secondary	Gross and histologic evaluation of captured embolic debris	Assessed by an independent pathology core laboratory	Procedural
Secondary	Average number of captured particles =140 µm in diameter	Assessed by an independent pathology core laboratory	Procedural
Secondary	Total acute infarct burden	As measured by diffusion-weighted imaging (DWI), also referred to as DW-MRI. This outcome will be evaluated and tabulated to include total lesion count, average (mean) lesion volume and median lesion volume.	14 days pre-procedure and at 18-36 hours post-procedure
Secondary	Occurrence of Transient Ischemic Attack (TIA)		30 days