|            AtriClip            System Surpasses 50,000 Units Sold Worldwide          |                           AtriClip is        the most widely used device globally for left atrial appendage management
  WEST        CHESTER, Ohio--(BUSINESS WIRE)--April 21, 2015--
  AtriCure, Inc.        (Nasdaq: ATRC), a leading innovator in surgical treatments for atrial        fibrillation (Afib) and left atrial appendage management, today        announced it has sold more than 50,000 AtriClip(R) Left Atrial Appendage        Exclusion System devices worldwide, making it not only the preferred        surgical device but also the most widely used of all devices for        excluding the left atrial appendage (LAA), with more units sold than all        other LAA management devices combined.
  The LAA is a muscular        pouch attached to the heart's left atrium. In patients with Afib and        other cardiac arrhythmias, blood can pool and form clots in the        appendage, which may then leave the heart and cause strokes. One study        concluded that more than 90 percent of detected blood clots in patients        with atrial fibrillation are formed in the LAA.(1)
  Patients who        suffer from Afib have a 500 percent greater risk of stroke, compared        with the general population.(2) Afib-related strokes are associated with        higher morbidity and mortality than non-Afib related strokes.(1) Prior        to the invention of the AtriClip system, cardiac surgeons typically        addressed the LAA during open heart surgery by cutting it off or closing        off the opening of LAA to the atrium. This approach required extra time        on the heart-lung machine and posed a risk of hemorrhaging and or        reopening over time.
  "Cardiac Surgeons are increasingly becoming        more comfortable with using our device versus the traditional methods of        amputation or simply closing the opening with suture or stapling        devices," said Mike Carrel, president and chief executive officer of        AtriCure. "We are excited about our prospects for continued significant        growth."
  "From my experience, the AtriClip device has        provided consistent LAA closure every time," said Dr. Andrea Natale,        Electrophysiologist and Executive Medical Director, Texas Cardiac        Arrhythmia Institute at St. David's Medical Center. "I have been working        more closely with my cardiac surgeons and recommending that the AtriClip        System be used for LAA exclusion."
  The AtriClip System is        cleared by the Food and Drug Administration with an indication for        occlusion of the left atrial appendage, under direct visualization, in        conjunction with other open cardiac surgical procedures. The clearance        resulted in part from the successful EXCLUDE trial (NCT00779857), which        showed the LAA was closed successfully with the AtriClip device in 98.4        percent of patients, with no device-related mortality. (2)
  "The        AtriClip provides surgeons with the speed, ease of delivery and efficacy        we need for LAA management," said Dr. Marc Gerdisch, Chief of        Cardiovascular and Thoracic Surgery, Franciscan St. Francis Health,        Indianapolis. "I have used the device for several years, including        minimally invasive procedures, and it has performed perfectly."
  In        early 2014, AtriCure initiated the Stroke Feasibility Study        (NCT01997905) using the AtriClip system in a minimally invasive        procedure on a beating heart in seven hospitals across the United        States. This study evaluates the safety of the AtriClip system when used        for stroke prevention in patients with non-valvular Afib who can't take        long-term anticoagulation medications. Complete exclusion of the LAA        will be confirmed during the procedure using echo graphic imaging.
  About        AtriCure
  AtriCure, Inc. is a medical device company providing        innovative atrial fibrillation (Afib) solutions designed to produce        superior outcomes that reduce the economic and social burden of atrial        fibrillation. AtriCure's Synergy(TM) Ablation System is the first and        only surgical device approved for the treatment of persistent and        longstanding persistent forms of Afib in patients undergoing certain        open concomitant procedures. AtriCure's AtriClip left atrial appendage        management (LAAM) exclusion device is the most widely sold device        worldwide that's indicated for the occlusion of the left atrial        appendage. The company believes cardiothoracic surgeons are adopting its        ablation and LAAM devices for the treatment of Afib and reduction of        Afib related complications such as stroke. Afib affects more than 33        million people worldwide.(3) For more information visit AtriCure.com or        follow us on Twitter @AtriCure.
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  (1)        Benjamin EJ, Chen PS, Bild DE, et al. Prevention of atrial fibrillation:        report from a national heart, lung, and blood institute workshop.        Circulation. 2009 Feb 3; 119(4):606-18.
  (2) Data on file at        AtriCure. IDE G080095, EXCLUDE study.
  (3) Chugh SS, Havmoeller R,        Narayanan K, Singh D, Rienstra M, et al., "Worldwide epidemiology of        atrial fibrillation: a Global Burden of Disease 2010 Study."        Circulation. 2014 Feb 25; 129 (8):837-47.
  CONTACT: AtriCure, Inc.
  Media        Relations
  Valerie Storch-Willhaus, 612-605-3311
  Director,        Corporate Marketing and Communications
  vstorch-willhaus@atricure.com
  or
  Investor        Relations
  Andy Wade, 513-755-4564
  Senior Vice President        and Chief Financial Officer
  awade@AtriCure.com      |