Chimney EndoVascular Aneurysm Sealing Of New Expanded Indication

1 Paravisceral Abdominal Aortic Aneurysm Clinical Trial

— ChEVAS One  

Official title:

Prospective, Multicenter, Non-randomized Study With Consecutive, Eligible Subject Enrollment at Each Site, for the Evaluation of the ChEVAS System for Endovascular Repair of Paravisceral, Juxtarenal, and Pararenal Abdominal Aortic Aneurysms.

Clinical Trial Details — Status: Active, not recruiting

Administrative data

• NCT number: NCT04252573
• Other study ID #: CP-0015
• Status: Active, not recruiting
• Phase: N/A
• Start date: June 29, 2020
• Est. completion date: March 2028

Study information

• Verified date: April 2024
• Source: Endologix
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Prospective, multi-center, non-randomized study with consecutive, eligible subject enrollment at each site, for the evaluation of the ChEVAS System for Endovascular Repair of Complex Abdominal Aortic Aneurysms.

Description:

This is a prospective multicenter study with consecutive eligible subject enrollment at each site. Enrollment will include up to 150 subjects (120 ChEVAS subjects and up to 30 infrarenal roll-in subjects). The ChEVAS study will evaluate the safety and effectiveness outcomes following appropriate government and ethics committee/IRB requirements and guidelines.

All enrolled (ChEVAS and Infrarenal) subjects will undergo a high resolution, contrast-enhanced computed tomography angiography (CT) scan of the relevant aortic and aortoiliac vasculature within three months of the scheduled procedure and at specified follow-up intervals post-implantation. Follow-up visits will occur at 30-days, 6-months, and annually to 5-years to assess aneurysm morphology, the status of the implanted devices, and relevant laboratory test results.

*As of October 27, 2021 ChEVAS ONE Study is voluntarily closed to screening and consenting. 13 subjects enrolled in the study will continue to be observed through 5-years.

Recruitment information / eligibility

• Status: Active, not recruiting
• Enrollment: 13
• Est. completion date: March 2028
• Est. primary completion date: October 19, 2022
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Adults at least 18-years old

• Subject provided informed consent

• Subject agrees to all follow-up visits

• Abdominal aortic aneurysm (AAA) with maximum sac diameter =5.0 cm, or = 4.5 cm which has increased by = 0.5cm within the last 6-months, or which exceeds 1.5 times the transverse dimension of an adjacent non-aneurysmal aortic segment. No AAA <4cm will be included

• Absence of significant cranial angulation of the visceral vessels that would preclude vessel cannulation and stenting

Exclusion Criteria:

• Requirement of home oxygen

• Psychiatric or other condition that may interfere with the study

• Participating in another clinical drug and/or device study, which could confound the results of this study (patient must have completed the primary endpoint of any previous study at least 30-days prior to enrollment in this study)

• Known allergy or contraindication to any device material, contrast, or anticoagulants

• Serum creatinine level >1.8mg/dL

• CVA or MI within three months of enrollment/treatment

• Prior stent in any target visceral vessel, the aorta or iliac artery that may interfere with delivery system introduction or stent placement

• Connective tissue diseases (e.g., Marfan Syndrome)

• Unsuitable vascular anatomy that may interfere with device introduction or deployment

• Pregnant, planning to become pregnant within 60 months, or breast feeding.

Related Conditions & MeSH terms

• 1 Paravisceral Abdominal Aortic Aneurysm
• 2 Juxtarenal Abdominal Aortic Aneurysm
• 3 Pararenal Abdominal Aortic Aneurysm
• 4 Complex Abdominal Aortic Aneurysms
• Aneurysm
• Aortic Aneurysm
• Aortic Aneurysm, Abdominal

Intervention

Device:
• Chimney Endovascular Aortic Sealing (ChEVAS) System
The ChEVAS procedure involves the use of the Nellix System in conjunction with parallel branch chimney stents for the treatment of juxtarenal, pararenal, or paravisceral abdominal aortic aneurysms.

Locations

Country	Name	City	State
United States	Emory University	Atlanta	Georgia
United States	Cooper University Hospital	Camden	New Jersey
United States	University of Missouri	Columbia	Missouri
United States	Valley Vascular Consultants	Huntsville	Alabama
United States	St Vincent Medical Group	Indianapolis	Indiana
United States	Icahn School of Medicine at Mount Sinai	New York	New York
United States	Providence Portland	Portland	Oregon
United States	MedStar Health Research Institute	Washington	District of Columbia

Sponsors (1)

Lead Sponsor	Collaborator
Endologix

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Proportion of Technical Success, Safety and Effectiveness Indicators at One-Month Post-Index Procedure	The outcome at one-month post index procedure will be measured by the proportion of subjects that experience technical success and the absence of severe bowel ischemia, permanent paraplegia/paraparesis, renal failure, disabling stroke, abdominal aortic aneurysm rupture, and aneurysm-related mortality within 30-days of the index procedure.	1-Month
Primary	Proportion of Safety and Effectiveness Indicators at One-Year Post-Index Procedure	The outcome at one-year post index procedure will be measured by the proportion of subjects that experience freedom from abdominal aortic aneurysm rupture and aneurysm-related mortality up until 1-year (day 365), freedom from imaging-related findings in the 1-year window (Type 1 or 3 endoleak, migration > 10mm, AAA sac expansion > 5mm, and occlusion within the ChEVAS System not seen at the index procedure), and open conversion through day 365.	1-Year