watchman device and heart placement


WATCHMANTM:  a revolutionary approach to reducing stroke risk from a-fib

heart_-squares_watchman2.pngThe WATCHMAN™ left atrial appendage closure (LAAC) device was developed for patients with non-valvular atrial fibrillation (AFib) as an alternative to the blood thinners they often take to reduce their stroke risk. 

AFib is an abnormal heart rhythm that can cause irregular heart beating and can cause blood to pool and clot inside the heart. That clot, if released, could cause a stroke which can be fatal or disabling. The WATCHMAN™ device closes off the left atrial appendage, which is the most common place where clots can form, enabling most people to stop their blood thinning medication. This therapy can be an important option for patients who are at risk of bleeding.

CMC is a leader in the minimally-invasive WATCHMAN procedure, being the first hospital in New England to implant the device after FDA approval. We were also one of the first sites in the world to enroll WATCHMAN™ and to implant the new WATCHMAN FLX™. In 2024, CMC physicians hit an important milestone they implanted the 800th WATCHMAN device since the inception of the program in 2015. 




Understanding the


What is the the WATCHMAN™ Device? Hear from Dr. Kim, Medical Director, Cardiac Electrophysiology at CMC's New England Heart & Vascular Institute how this minimally-invasive procedure is helping patients with A-Fib avoid open heart surgery.

New England Heart & Vascular Institute


For performing the 100th WATCHMAN™ device implant of 2022—the first year the team has ever hit this milestone! CMC has offered the WATCHMAN™ device since May 2015. This innovative treatment helps high-risk patients with non-valvular atrial fibrillation who need an alternative to long-term blood thinner therapy. Congrats to this multidisciplinary team led by Drs. Jamie Kim, Connor Haugh, Jinu John, Dingxin Qin, and WATCHMAN™ Coordinator Kristen L’heureux, BSN, RN. A special shout out to CMC’s imaging physicians who play a vital role in these procedures (not pictured), Drs. Capodilupo, Hanlon, Preis and Veeranna


See how it works

An alternative to blood thinners

Tiny implant helps control risk of stroke due to atrial fibrillation


How would you feel if your doctor suggested you be the first to try something? The first person in New England to have a new device implanted in your heart to reduce your chance of stroke? Seventy five year old Kenneth Hynes couldn’t say no. 



After the WATCHMAN™ procedure, Cecelia Deschambault says “I definitely do have my life back."

Meet our


Kristen ​L'heureux, RN, BSN, WATCHMAN™ Coordinator, works alongside our team of board-certified cardiologists to offer AFib patients the WATCHMAN™ procedure. For more information on the WATCHMAN™ or to set up a consult with a doctor, please contact Kristen at 603.314.7242.