From www.youtube.com - August 31, 2017 11:29 AM

The WATCHMAN™ LAA Closure Device is designed to reduce the risk of stroke in patients with Atrial Fibrillation by preventing thrombus embolization from the left atrial appendage.

 

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http://www.scoop.it/t/21st-century-innovative-technologies-and-developments/?&tag=heart