LAMax Vs. Watchman LAAC Device for Subjects With Non-valvular AF to Reduce the Risk of Stroke

NCT ID: NCT04429646

Last Updated: 2022-05-06

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

236 participants

Study Classification

INTERVENTIONAL

Study Start Date

2019-04-20

Study Completion Date

2021-06-10

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

This is a prospective, multicenter, randomized, active controlled, clinical trial to evaluate the safety and effectiveness of the LAMax Left Atrial Appendage (LAA) Closure System.

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

This is a prospective, multicenter, randomized, active controlled, clinical trial to evaluate the safety and effectiveness of the LAMax Left Atrial Appendage Closure (LAAC) System. Subjects with non-valvular Atrial Fibrillation will be randomized in a 1:1 ratio to the Experimental Treatment Arm (LAMax LAAC system) or the Control Arm (Watchman LAAC system, Boston Scientific Inc., USA). The trial is designed to demonstrate that safety and effectiveness of the LAMax device are non-inferior to the Watchman device.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Non-valvular Atrial Fibrillation

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Allocation: Randomized Intervention Model: Parallel Assignment Primary Purpose: Prevention Endpoint Classification: Safety/Efficacy Study Masking: Open Label
Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

LAMax left atrial appendage occluder

Intervention device, LAMax left atrial appendage closure system

Group Type EXPERIMENTAL

Percutaneous left atrial appendage closure-LAMax

Intervention Type DEVICE

Interventional device, LAMax left atrial appendage closure system

Watchman (control)

Intervention device, Watchman® LAA Closure Device

Group Type ACTIVE_COMPARATOR

Percutaneous left atrial appendage closure-Watchman

Intervention Type DEVICE

Interventional device, Watchman® LAA Closure Device

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

Percutaneous left atrial appendage closure-LAMax

Interventional device, LAMax left atrial appendage closure system

Intervention Type DEVICE

Percutaneous left atrial appendage closure-Watchman

Interventional device, Watchman® LAA Closure Device

Intervention Type DEVICE

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* Patients ≥ 18 years old with non-valvular atrial fibrillation (AF) and CHA2DS2-VASc ≥2
* There is one of the following: (1) Not suitable for long-term standard anticoagulation treatment; (2) On the basis of long-term standardized anticoagulant therapy with warfarin, stroke or embolism still occurred; (3) HAS-BLED ≥ 3.
* Provide written informed consent and agree to comply with required follow-ups.

Exclusion Criteria

1. . Patients with other diseases other than AF who need long-term warfarin anticoagulation therapy;
2. . Those who need selective cardiac surgery;
3. . Heart failure NYHA grade IV;
4. . AF caused by rheumatic valvular disease, degenerative valvular disease, congenital valvular disease, severe mitral stenosis, aortic stenosis, or other valvular diseases;
5. . The early onset of AF and paroxysmal AF with definite causes, such as secondary to coronary artery bypass grafting (CABG), hyperthyroidism;
6. . Patients with symptomatic carotid artery disease (such as carotid stenosis \> 50%);
7. . Patients with acute myocardial infarction, unstable angina, or recent myocardial infarction \< 3 months;
8. . Stroke or TIA within 30 days;
9. . Bleeding disease, coagulation-related diseases, and active peptic ulcer;
10. . Active endocarditis, vegetations, or other infections causing bacteremia or sepsis;
11. . Conditions may lead to difficulty in testing or significantly shorten the life expectancy of patients (\< 1 year);
12. . Pregnant, lactating or planned pregnancy during the trial;
13. . Patients who have not reached the end of other clinical trials of drug or device;
14. . Hematological abnormality (WBC \< 3 × 109 / L, HB \< 90g / L, or platelet count \< 50 × 109 / L or \> 700 × 109 / L));
15. . Renal insufficiency (creatinine \> 3.0mg/dl or 265.2umoi / L), and / or advanced renal diseases requiring dialysis;
16. . Severe liver dysfunction (AST / ALT is 5 times higher than the upper limit of normal value, or total bilirubin is 2 times higher than the upper limit of normal value);
17. . The investigator believes that the patient is not suitable to participate in the clinical trial.
18. . Left atrial appendage has been removed, post heart transplantation, post atrial septal repair, or post occluder implantation;
19. . Radiofrequency ablation in 30 days before and after the implantation of LAA occluder;
20. . Cardioversion within 30 days after the implantation of LAA occluder;
21. . Post prosthetic heart valve replacement;
22. . Allergic to or contraindication to metal nickel alloy, aspirin, clopidogrel, contrast agent, heparin and other anticoagulants, etc;
23. . Patients who have placed other instruments in the cardiovascular cavity and are unable to place the LAA occluder;
24. . LVEF(left ventricular ejection fraction )\<35%;
25. . Clear thrombus is found in the heart before device implantation;
26. . TEE examination: refer to Watchman LAAC requirement to measure the orifice diameter of LAA, the maximum diameter is less than 17 mm, or more than 31 mm;
27. . Patent foramen ovale with high risk;
28. . mitral stenosis with a valve area ≤ 2 cm2;
29. . left atrial diameter \> 65mm, or pericardial effusion more than a small amount, the depth of local effusion \> 10 mm;
30. . Contraindications to X-ray, or not suitable for TEE examination.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

Meet the organizations funding or collaborating on the study and learn about their roles.

The Third Medical Center, Chinese People's Liberation Army General Hospital

UNKNOWN

Sponsor Role collaborator

The Second Affiliated Hospital of Chongqing Medical University

OTHER

Sponsor Role collaborator

Ganzhou Municipal Hospital

UNKNOWN

Sponsor Role collaborator

First Affiliated Hospital of Guangxi Medical University

OTHER

Sponsor Role collaborator

The Second Hospital of Hebei Medical University

OTHER

Sponsor Role collaborator

The First Hospital of Jilin University

OTHER

Sponsor Role collaborator

LanZhou University

OTHER

Sponsor Role collaborator

Second Affiliated Hospital of Nanchang University

OTHER

Sponsor Role collaborator

The First Affiliated Hospital of Nanchang University

OTHER

Sponsor Role collaborator

The First Municipal hospital of Ningbo

UNKNOWN

Sponsor Role collaborator

Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University

OTHER

Sponsor Role collaborator

Tianjin Medical University General Hospital

OTHER

Sponsor Role collaborator

ShenZhen KYD Biomedical Technology Co., Ltd.

INDUSTRY

Sponsor Role collaborator

Second Affiliated Hospital, School of Medicine, Zhejiang University

OTHER

Sponsor Role lead

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

Jian'an Wang,MD,PhD

President of the Second Affiliated Hospital, School of Medicine, Zhejiang University & Chief of Cardiology

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

Learn about the lead researchers overseeing the trial and their institutional affiliations.

Jian-an Wang, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

Second Affiliated Hospital, School of Medicine, Zhejiang University

Dongxing Ma, MD

Role: PRINCIPAL_INVESTIGATOR

The Third Medical Center, Chinese People's Liberation Army General Hospital

Locations

Explore where the study is taking place and check the recruitment status at each participating site.

The First Hospital of Lanzhou University

Lanzhou, Gansu, China

Site Status

The Second Hospital of Hebei Medical University

Shijiazhuang, Hebei, China

Site Status

Ganzhou Municipal Hospital

Ganzhou, Jiangxi, China

Site Status

The Second Affiliated Hospital of Nanchang University

Nanchang, Jiangxi, China

Site Status

The First Affiliated Hospital of Nanchang University

Nanchang, Jiangxi, China

Site Status

The First Hospital of Jilin University

Changchun, Jilin, China

Site Status

The Second Affiliated Hospital, School of Medicine, Zhejiang University

Hangzhou, Zhejiang, China

Site Status

The First Municipal hospital of Ningbo

Ningbo, Zhejiang, China

Site Status

The Third Medical Center, Chinese People's Liberation Army General Hospital

Beijing, , China

Site Status

The Second Affiliated Hospital of Chongqing Medical University

Chongqing, , China

Site Status

Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine

Shanghai, , China

Site Status

General Hospital of Tianjin Medical University

Tianjin, , China

Site Status

Countries

Review the countries where the study has at least one active or historical site.

China

References

Explore related publications, articles, or registry entries linked to this study.

Fan Y, Ma D, Wang C, Luo J, Ling Z, Li S, Peng X, Zhang Z, Chu H, Wang J; investigators in the present study. A Membrane Modification Technique for Left Atrial Appendage Occlusion: A Multicenter Randomized Controlled Trial. JACC Asia. 2025 Mar;5(3 Pt 1):374-387. doi: 10.1016/j.jacasi.2024.12.008. Epub 2025 Feb 18.

Reference Type DERIVED
PMID: 40049930 (View on PubMed)

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

SAHZJU CT019

Identifier Type: -

Identifier Source: org_study_id

More Related Trials

Additional clinical trials that may be relevant based on similarity analysis.

Amulet™ ADVANCE LAA
NCT05997446 ACTIVE_NOT_RECRUITING
CHAMPION-AF Clinical Trial
NCT04394546 ACTIVE_NOT_RECRUITING NA