How the WATCHMAN Implant Works
To understand how the WATCHMAN Implant works, it helps to know more about the connection between atrial fibrillation and stroke.
Atrial fibrillation, or AFib, affects your heart’s ability to pump blood normally. This can cause blood to pool in an area of the heart called the left atrial appendage, or LAA. There blood cells can stick together and form a clot. When a blood clot escapes from the LAA and travels to another part of the body, it can cut off the blood supply to the brain, causing a stroke.1,2
In people with AFib not caused by a heart valve problem, more than 90% of stroke-causing clots that come from the heart are formed in the LAA.1 That’s why closing off this part of the heart is an effective way to reduce stroke risk.
The WATCHMAN Implant fits right into your LAA. It’s designed to permanently close it off and keep those blood clots from escaping. The WATCHMAN Implant is about the size of a quarter and made from very light and compact materials commonly used in many other medical implants.
In a clinical trial, 96% of people were able to stop taking blood thinners just 45 days after the WATCHMAN Implant procedure.