The Science Behind Watchman Heart Devices

Heart diseases are a serious medical condition that requires prompt medical attention. Heart diseases affect millions of people globally, and the majority of them need proper medical treatment. One of the most innovative and efficient treatments for heart diseases is the insertion of Watchman heart devices. These devices aid in reducing the risk of blood clots, which is a potential cause of a stroke. Additionally, the devices also reduce the dependency on blood thinning medications. This blog post provides an in-depth look at the functionality of the watchman device.

What is a Watchman heart device?

A Watchman heart device is a small, implantable medical device that is used to reduce the risk of stroke in patients with an irregular heart rhythm called atrial fibrillation (AF). The Watchman heart device reduces the risk of stroke by closing off the left atrial appendage (LAA) of the heart. The LAA is a small sac-like structure on the heart’s left side where blood clots tend to form.

How does a Watchman heart device work?

The Watchman heart device is inserted through a catheter, which is passed through the leg vein to reach the heart. The device is positioned inside the LAA to seal it off completely. Once inserted, the device remains in place permanently, as it becomes a part of the body’s natural tissue. Over time, the tissue grows over the device, completely sealing off the LAA. Blood flow returns to normal after the procedure, and the patient’s risk of stroke greatly reduces.

How effective are Watchman heart devices?

Watchman heart devices have been clinically proven to be effective in reducing the risk of stroke. Studies have shown that these devices are just as effective as blood thinning medications but with fewer side effects. Blood thinning medications increase the risk of bleeding, which can be life-threatening. The device also reduces the dependency on these medications, leading to less discomfort for patients.

Is the procedure safe?

Like any medical intervention, there are some risks associated with the procedure. However, Watchman heart devices have undergone extensive clinical trials and rigorous testing to ensure their safety. The procedure is safe, and the risk of complications is low. Patients typically require overnight hospitalization and can return to their normal activities within days.

Who is a good candidate for Watchman heart devices?

Patients who have AF and require medication for blood thinning are good candidates for Watchman heart devices. Those who cannot take blood-thinning medications due to bleeding disorders or recent bleeding episodes are also good candidates. However, potential candidates will need to undergo a thorough evaluation by a medical professional to ensure they are the appropriate candidate for this procedure.


In summary, the Watchman heart device is a groundbreaking intervention procedure for patients with atrial fibrillation. The device reduces the risk of stroke by sealing off the left atrial appendage and reducing the need for blood-thinning medications. The procedure is safe, effective, and has the potential to improve the quality of life for millions of people living with AF. If you are living with an irregular heart rhythm and require medication for blood thinning, speak with your healthcare provider about the option of a Watchman heart device. It may be the right fit for you.