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Updated: Feb 13, 2026

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Left Atrial Appendage Occlusion: The Current Device Landscape and Future Perspectives
Ignacio Cruz-Gonzalez1, Monica Fuertes-Barahona1, Jose C Moreno-Samos1
1Cardiology Department, University Hospital of Salamanca, Biomedical Research Institute of Salamanca (IBSAL), CIBER-CV, Paseo San Vicente, Salamanca 37007, Spain.
Insights
Left atrial appendage occlusion (LAAO) effectively prevents strokes in atrial fibrillation. This review covers current and emerging LAAO devices, assessing their safety and efficacy for patients.
Area of Science:
- Cardiology
- Medical Devices
- Interventional Cardiology
Background:
- Nonvalvular atrial fibrillation increases stroke risk.
- Percutaneous left atrial appendage occlusion (LAAO) is an alternative to anticoagulation.
- Numerous devices are available for LAAO procedures.
Purpose of the Study:
- To review existing and novel devices for LAAO.
- To assess the safety and efficacy of LAAO for stroke prevention.
- To discuss the clinical data and characteristics of various LAAO devices.
Main Methods:
- Literature review of clinical studies and device data.
- Analysis of safety and efficacy data for LAAO devices.
- Comparison of established and emerging LAAO technologies.
Main Results:
- Established LAAO devices demonstrate safety and efficacy in preventing embolic strokes.
- Newer LAAO devices show promise with ongoing clinical evaluation.
- Emerging technologies are in preclinical or early clinical stages.
Conclusions:
- LAAO is a proven stroke prevention strategy for nonvalvular atrial fibrillation.
- A range of LAAO devices are available, with ongoing innovation.
- Continued research is essential for optimizing LAAO therapies.
Abstract:
Since the first percutaneous left atrial appendage occlusion (LAAO), many studies have shown the safety and efficacy of this technique to prevent embolic strokes in nonvavular atrial fibrillation. The design, characteristics, and clinical data of the most frequently used devices for LAAO are reviewed, including the Amplatzer cardiac plug and Amulet (Abbott Vascular), the Watchman (Boston Scientific), and the LARIAT device (SentreHEART). Similarly, newer closer devices, such as Ultraseal (Cardia), LAmbre (Lifetech), and Coherex WaveCrest (Johnson & Johnson), are also discussed. Finally, new technologies still in the stage of preclinical study or in the initial clinical experience are also reviewed.
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