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Updated: Jan 31, 2026

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Left atrial appendage occlusion using LAmbre Amulet and Watchman in atrial fibrillation
Shaojie Chen1, K R Julian Chun1, Stefano Bordignon1
1Frankfurt Academy For Arrhythmias (FAFA), Cardioangiologisches Centrum Bethanien (CCB) Frankfurt am Main, Medizinische Klinik III, Agaplesion Markus Krankenhaus, Frankfurt am Main, Germany.
Insights
Left atrial appendage closure devices like LAmbre, Amulet, and Watchman show high implant success and good short-term outcomes for non-valvular atrial fibrillation patients.
Area of Science:
- Cardiology
- Medical Devices
- Interventional Cardiology
Background:
- Left atrial appendage closure (LAAC) is an alternative to anticoagulation for non-valvular atrial fibrillation (AF).
- Comparison of LAAC devices is crucial for clinical decision-making.
- Evaluating peri-procedural and short-term outcomes of different LAAC systems is essential.
Purpose of the Study:
- To compare the LAmbre LAAC system with the Amulet and Watchman devices.
- To assess peri-procedural and short-term clinical outcomes.
- To evaluate implant success rates and adverse events.
Main Methods:
- Prospective observational study.
- 140 patients with non-valvular atrial fibrillation were enrolled.
- Comparison of LAmbre (n=30), Amulet (n=74), and Watchman (n=36) devices.
Main Results:
- High implant success rates: 100% for LAmbre, 99% for Amulet, 100% for Watchman.
- No significant differences in device repositions, fluoroscopic/procedural times, or major peri-procedural adverse events.
- Good device stability and clinical condition at six months' follow-up.
Conclusions:
- LAmbre, Amulet, and Watchman demonstrate comparable safety and efficacy.
- These LAAC devices offer a favorable risk-benefit profile for AF patients.
- Further research may explore long-term outcomes and specific patient populations.
Background:
Left atrial appendage closure (LAAC) has been suggested as an alternative to anticoagulation in non-valvular atrial fibrillation (AF). The present study aimed to compare a LAmbre LAA occluder system [Lifetech Scientific (Shenzhen) Co. Ltd., Shenzhen, China] with the most investigated Amulet (St. Jude Medical Inc., St. Paul, MN, USA) and Watchman (Boston Scientific, Plymouth, MN, USA) devices in terms of peri-procedural and short-term outcomes.
Methods:
This is a prospective observational study.
Results:
Overall, 140 patients (50 female, mean age 76.2±8.4 years) were consecutively enrolled. Mean CHA2DS2-VASc score was 3.8±1.5, and mean HAS-BLED score was 3.9±1.1. Baseline clinical characteristics were comparable between the three groups (LAmbre, n=30; Amulet, n=74; Watchman, n=36); the LAmbre group had significantly more patients with complicated LAA morphology (p=0.006). The implant success rate was 100% in LAmbre, 99% in Amulet, and 100% in Watchman group (p=0.638). The number of device repositions was not significantly different between groups (0.7±1.1 in LAmbre, 1.0±2.0 in Amulet, and 1.4±1.8 in Watchman group, p=0.345). Fluoroscopic and procedural times were similar between groups. Major peri-procedural adverse events did not differ between groups (0% vs. 0% vs. 2.8%, p=0.233). Six months' follow-up showed good device stability and patients' clinical condition in all groups.
Conclusion:
LAmbre, Amulet, and Watchman exhibit remarkable implant success rate, low risk of peri-procedural adverse events, and good clinical outcomes.
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