Physician, patient and daughter in hospital room

Have You Been Told that You Have Atrial Fibrillation (AF)?

Learn more about the disease and a proven treatment option

The risk of stroke is 5 times higher in patients with AF

The average person with AF is 5 times more likely to suffer a stroke than someone with a regular heartbeat.1

Learn About AF & Stroke Risk

There is a wide range of treatment options available for AF.

Left atrial appendage closure (LAAC) with the WATCHMAN™ and WATCHMAN FLX™ devices is one of them and it is a one-time minimally invasive procedure that is used to reduce the risk of stroke in patients suffering from non-valvular AF.

WATCHMAN device and pill illustration

Beyond Blood Thinners

People with AF often face the lifelong use of blood thinners and the associated bleeding risks to reduce their risk of stroke. WATCHMAN FLX offers a safe alternative.

See What Makes WATCHMAN FLX Different
heart check illustration

For All the Right Reasons

WATCHMAN FLX effectively reduces the risk of stroke – without the risk of bleeding that can come with the long-term use of vitamin K antagonist (VKA - the most common blood thinner).3,4

See Why People Choose WATCHMAN FLX

WATCHMAN FLX is for people with atrial fibrillation not caused by a heart valve problem who need an alternative to oral anticoagulants. This website is intended to provide patients and caregivers with some information about the WATCHMAN FLX Implant. It may help prepare you for talking to your doctor about your options for reducing stroke risk.

CAUTION: The law restricts these devices to sale by or on the order of a physician. Indications, contraindications, warnings and instructions for use can be found in the product labeling supplied with each device. Information for the use only in countries with applicable health authority product registrations.

Content of this website is for Information Purposes only and not meant for product promotion or medical diagnostic. This information does not constitute medical or legal advice, and Boston Scientific makes no representation or warranty regarding this information or its completeness, accuracy or timeliness.

Accordingly, Boston Scientific strongly recommends that you consult with your physician on all matters pertaining to your health or to address any questions.


  1. National Stroke Association. Making the Afib-Stroke Connection. Published 2012. Accessed September 1, 2016. 
  2. Holmes DR Jr, Kar S, Price MJ, et al. J Am Coll Cardiol. 2014;64(1):1-12. 
  3. Holmes DR Jr, Doshi SK, Kar S, et al. J Am Coll Cardiol. 2015;65(24):2614-2623. 
  4. Price MJ, Reddy VY, Valderrábano M, et al. JACC Cardiovasc Interv. 2015;8(15):1925-1932.