A Watchman is a small device they install in your heart to stop blood clots from forming in the LAA. Your doctor can check to see if you qualify for this device. There is a formula they use to assign points to see if you qualify. They put in the device during a heart cath. It is really a normal procedure now days. Mine took about one hour to do. Spent the night in hospital and was sent home next morning. I have had no problems from my device. Talk to your cardiologist.