Annular Smart Control, Precision Pulsed Field Ablation: Successful Live Demonstration of AccuPulse® Adjustable Loop PFA System at CHRS 2026 by The Fourth Affiliated Hospital of Soochow University

Recently, during the grand opening of the 26th Cardiac Electrophysiology Conference, AccuPulse successfully held a special surgical demonstration session themed “Circular Intelligent Control, Precise Pulsing.”Under the leadership of President Zhou Yafeng,Director, Department of Cardiology, The Fourth Affiliated Hospital of Soochow UniversityWang Linlin and TeamSuccessful Application of AccuPulse Medical's AccuPulse^®Disposable Cardiac Pulsed Field Ablation Catheter and AccuBlator^®Cardiac Pulsed Field Ablation System: A cardiac pulsed field ablation (PFA) procedure was performed on a patient with atrial fibrillation.

The patient was a 70-year-old male. Based on preoperative examinations, his left atrial diameter measured 47 mm. The operator successfully completed the procedure using the AccuPulse 20–25 mm adjustable-ring cardiac pulsed-field ablation catheter.

PVI Ablation Map

During this procedure, the operator performed circumferential pulmonary vein isolation. The time from venous puncture to completion of transseptal puncture was 5 minutes, mapping and modeling took 9 minutes, and the dwell time in the left atrium was 91 minutes. A total of 189 radiofrequency ablations were delivered across the pulmonary veins, with a cumulative energy delivery duration of 33.075 seconds. Ablation details for each pulmonary vein were as follows: LSPV 42 applications (24 at the ostium, 18 at the antrum), LIPV 57 applications (30 at the ostium, 27 at the antrum), RSPV 36 applications (30 at the ostium, 6 at the antrum), and RIPV 54 applications (24 at the ostium, 30 at the antrum). During ablation of the left superior pulmonary vein, the patient’s atrial fibrillation spontaneously converted to sinus rhythm.

Pre- and Post-operative Substrate Mapping

During the procedure, the AccuPulse adjustable-loop PFA catheter demonstrated excellent performance in mapping and modeling. The catheter achieved precise anatomical modeling, successfully completing the 3D reconstruction of the left atrium and pulmonary veins. Substrate mapping yielded high-quality results, providing clear and reliable navigation support for the surgery. Throughout the procedure, catheter maneuverability was smooth, resulting in a satisfactory operator experience. During the ablation phase, the catheter achieved efficient pulmonary vein isolation (PVI). Ablation at the ostia and antra of all four pulmonary veins was completed with a cumulative total of 189 energy deliveries. The flexible and controllable discharge strategy reflected a robust design foundation. Overall, this ablation system is safe, controllable, and excels in anatomical modeling, making it a reliable tool for pulse field ablation in atrial fibrillation.

Flexible Adaptation, Precise Apposition:Its unique 7.5F adjustable loop diameter design allows flexible adaptation to the pulmonary vein anatomy of different patients, enabling personalized fitting and significantly enhancing procedural adaptability and safety.

Smart Contact, Real-time Feedback:The system is equipped with AccuPulse’s proprietary impedance-based contact force sensing technology, which enables real-time monitoring of catheter-tissue contact quality and provides clear indications of contact status. This assists operators in achieving stable and reliable catheter manipulation, thereby ensuring a solid foundation for precise ablation procedures.

Efficient Integration, Streamlined Processes:The circular catheter integrates mapping, modeling, and ablation functions, enabling rapid intraoperative construction of three-dimensional electroanatomical heart models and precise lesion localization. This significantly reduces reliance on additional high-density mapping catheters in traditional procedures, thereby lowering procedural complexity and consumable costs, and providing atrial fibrillation patients with a safer, more effective, and less invasive treatment option.

Safer:7.5F Ultra-fine Catheter, Reducing Tissue Trauma

More Stable:Intelligent Contact Sensing for Enhanced Precision

More Flexible:Adjustable loop diameter (15–20 mm or 20–25 mm) to accommodate diverse clinical preferences

AccuPulse’s approved disposable cardiac pulsed field ablation catheter overcomes the challenges of contact stability and anatomical adaptability in the PFA field, providing a precise and reliable solution for pulmonary vein isolation (PVI). The AccuPulse cardiac pulsed field ablation catheter features a unique 7.5F adjustable loop diameter design, flexibly accommodating ablation of pulmonary veins with diverse anatomical structures. Intelligent contact feedback and flexible electrode selection empower operators with full control, enabling precise pulsed field ablation.

AccuPulse Medical is an innovative enterprise dedicated to the research, development, and commercialization of cutting-edge technologies in the field of cardiac electrophysiology. The company’s core team possesses extensive expertise in electrophysiological technology and substantial experience in the industrialization of medical devices. AccuPulse remains committed to providing safer, more efficient, and more convenient treatment options for patients with arrhythmias, including atrial fibrillation.

AccuPulse^®Disposable Cardiac Pulsed Field Ablation Catheter and AccuBlator^®The successful application of the cardiac pulsed field ablation system at the Fourth Affiliated Hospital of Soochow University (Suzhou Dushu Lake Hospital) marks a milestone achievement for AccuPulse in the field of innovative electrophysiological therapy technologies.

The Department of Cardiovascular Medicine at the Fourth Affiliated Hospital of Soochow University (Suzhou Dushu Lake Hospital) is a Jiangsu Provincial Key Clinical Specialty, a Suzhou Municipal Key Medical Discipline, a Suzhou Municipal Key Clinical Specialty, the Jiangsu Provincial Engineering Research Center for Diagnosis and Treatment Technology of Pan-vascular Diseases, and the affiliated department of the Soochow University Institute of Hypertension. It has been accredited as a China Chest Pain Center, a China Heart Failure Center, a China Atrial Fibrillation Center, and a Hypertension Standardization Center; it is also a construction unit for the National Standardized Pulmonary Vascular Disease Center, an Excellence Center within the National Standardized Center for Cardiovascular and Metabolic Diseases, a Demonstration Center within the National Standardized Chest Pain Center, and a member unit of the Jiangsu Provincial Cardiac Rehabilitation Center Alliance.

Academic Leader of Cardiology, Level II Chief Physician, Professor, MD, Doctoral Supervisor (Academic, Professional, and Clinical Doctoral Supervisors). Currently serving as Vice President of the Fourth Affiliated Hospital of Soochow University and Director of the Hypertension Research Institute of Soochow University. Concurrently holds positions as Vice Chairman of the Hypertension Branch of the Jiangsu Medical Association, Member of the Cardiovascular Physicians Professional Committee of the Jiangsu Medical Doctor Association, Jiangsu Province “Six Major Peaks” Talent, National Committee Member of the Hypertension Group under the Cardiovascular Professional Committee of the Chinese Medical Association, National Youth Committee Member of the Heart Failure Professional Committee of the Chinese Medical Doctor Association, National Youth Committee Member of the Cardiovascular Professional Committee of the Chinese Association of Rehabilitation Medicine, Vice Chairman of the Jiangsu Provincial Committee of the Cardiac Critical Care Branch of the China Medical Promotion Association, Member of the Cardiovascular Professional Committee of the Jiangsu Medical Association, Vice Chairman of the Youth Committee of the First Psychosomatic Medicine Professional Committee of the Suzhou Medical Association, Jiangsu Province “Science and Education Revitalizing Health” Key Medical Talent, Trainee of the Jiangsu Province “333 High-Level Talent Project,” Review Expert for the National Natural Science Foundation of China, and Review Expert for the China Scholarship Council.