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Updated: Feb 13, 2026

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
A History of Percutaneous Left Atrial Appendage Occlusion with the PLAATO Device
Heyder Omran1, Apostolos Tzikas2, Horst Sievert3
1Department of Cardiology, GFO Kliniken Bonn, Robert-Koch-Str. 1, Bonn 53115, Germany.
Abstract:
Percutaneous left atrial appendage occlusion was introduced as an alternative method for prevention of thromboembolism in patients with nonvalvular atrial fibrillation after extensive animal work in 2001. The first device was named Percutaneous Left Atrial Appendage Transcatheter Occlusion (PLAATO) and patented by the company Appriva. The device was invented by Michael Lesh, MD.
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Subjective Data
Subjective data provides vital information about the patient's health history and symptoms. This data is typically collected through interviews in which patients describe their experiences, symptoms, and concerns.
Health history and...

