Left atrial appendage closure devices

Left atrial appendage (LAA) closure devices refers to a device placed in the LAA in patients with atrial fibrillation who cannot be anticoagulated pharmaceutically to prevent thromboembolic events. It is placed percutaneously via the femoral vein to right atrium to left atrium by forming a puncture hole in the atrial septum.

Left atrial appendage closure devices occlude the LAA, thereby sealing it off to the blood circulating through the left atrium (LA).

  • Watchman®: Watchman device - resembles deployed round parachute and consists of titanium frame and plastic cap.
  • AtriClip® - resembles hair pin 
  • Plaato® - consists of cage and occlusion membrane
  • Amplatzer® Amulet
  • Ultraseal® - consists of two components - bulb and sail, characteristic appearance of the bulb resembling king's hat may help to distinguish it from other left appendage occlusion devices. 

Disclosure: I, Aneta Kecler - Pietrzyk , have no actual or potential ethical or financial conflict of interest in relation aforementioned devices. This article is not intended to be a personal endorsement or recommendation of aforementioned products.

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Article information

rID: 52905
Systems: Chest, Cardiac
Synonyms or Alternate Spellings:
  • Left atrial appendage closure device

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Cases and figures

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    Case 1: Amplatzer occluder
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    Case 2: Watchman device
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    Case 3: AtriClip device
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