New heart device aims to fix irregular rhythm during surgery

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Subjects aged ≥ 18 years and ≤ 80 years; * Subjects are willing and able to sign the informed consent form to receive study treatment, including surgical atrial fibrillation ablation, and complete the follow-up specified in the clinical study protocol; * Subjects with a history, electrocardiogram, or Holter ECG confirming paroxysmal atrial fibrillation, persistent atrial fibrillation (lasting more than seven days, or less than seven days but requiring drug or electrical cardioversion), or long-standing persistent atrial fibrillation (lasting more than one year); * Left ventricular ejection fraction \> 30% (determined by echocardiography or cardiac catheterization within 60 days prior to enrollment, as recorded in the patient's medical history); * Subjects scheduled to undergo open-heart surgery, including one or more of the following cardiac surgeries performed under direct vision: mitral valve repair or replacement, aortic valve repair or replacement, tricuspid valve repair or replacement, and coronary artery bypass grafting; * Subjects with an expected survival of ≥ 1 year. Exclusion Criteria: * Subjects with implanted electronic medical devices (such as pacemakers, ICDs, or CRT) or left atrial appendage devices; * Subjects with artificial heart valves; * Subjects with atrial fibrillation only, without indications for coronary artery bypass grafting (CABG) and/or valve surgery; * History of previous atrial fibrillation ablation, atrioventricular (AV) node ablation, or Maze procedure; * History of previous cardiac surgery (reoperation); * Wolff-Parkinson-White (WPW) syndrome or other supraventricular arrhythmias, AV nodal reentry, ventricular arrhythmias requiring antiarrhythmic drug treatment, or uncontrolled bradyarrhythmias (sinus bradycardia, junctional rhythm, ventricular escape rhythm, sinus arrest, sinoatrial block, second-degree AV block, third-degree AV block, and sick sinus syndrome).