Healthcare Professionals

Cardioblate™ Gemini

Irrigated RF Surgical Ablation System

Cardioblate™ Gemini Irrigated RF Surgical Ablation System

Irrigated radiofrequency for effective box lesions in beating heart concomitant and standalone AF procedures.


Simple - Fast - Reproducible

The Medtronic Cardioblate™ Gemini™-S Surgical Ablation System combines the efficacy of irrigated RF energy with a bipolar design to create clamped box lesions in open and minimally invasive procedures.

The Gemini-S model features:

  • Cardioblate™ iRF is the only surgical ablation system that combines a smart-energy algorithm with irrigation to consistently create deep, wide lesions.
  • A moderate curve designed to facilitate a lateral port access.
  • The jaw design accommodates varying degrees of tissue thickness.
  • Flexible neck that allows for an easier procedure.
  • QuickConnect guide-jaw system creating pathways for Gemini™-S to follow in thoracoscopic procedures.
  • Handle is designed for one-handed control.

Clinical highlights

The bipolar irrigated RF box-lesion is a safe and effective procedure for minimally invasive treatment of stand-alone AF.1

Thoracoscopic PVI and box isolation is highly effective in restoring sinus rhythm in long-standing persistent AF, reaching a success rate of more than 90% after 12 months.2

The box lesions created by the irrigated Bipolar Gemini™-s clamp provide a more effective isolation of the posterior left atrium wall and pulmonary veins when compared to the non-clamping box lesion with non-irrigated Isolator®* Synergy™* and Coolrail®* Linear Pen, (Atricure, Inc.). In fact, repeat catheter interventions were required in only 10% of Gemini™-s procedures versus 21% of Isolator®* Synergy™* and Coolrail®* Linear Pen, (Atricure, Inc.).2

These findings are consistent with a recent study in which complete isolation of the posterior Left Atrial Wall was only achieved in 23% of the patients treated with Isolator®* Synergy™* and Coolrail®* Linear Pen (AtriCure, Inc.) and the majority of patients required endocardial catheter ablation to complete the linear ablation lesions.3

Important Safety Information

Possible complications related to the ablation of cardiac tissue in combination with open heart surgery are: tissue perforation, extension of extracorporeal bypass, perioperative heart rhythm disturbances (atrial and/or ventricular), postoperative embolic complications, pericardial effusion or tamponade, injury to the great vessels, valve leaflet damage, conductions disturbances (SA/AV node), acute ischemic myocardial event and thrombus formation.

This product may not be available in your region. Please contact your Medtronic representative to determine availability in your area. 

™*Third party brands are trademarks of their respective owners. All other brands are trademarks of a Medtronic company.


1 Thoracoscopic radiofrequency ablation for lone atrial fibrillation: Box-lesion technique. Ales Klvacek et al. coretvasa 59 (2017) e332 – e336.

2 Clamping vs Non-Clamping Thoracoscopic Box Ablation in Long-Standing Persistent Atrial Fibrillation. Niels Harlaar, BSc, Niels J. Verberkmoes, MD, Pepijn H. van der Voort, MD, Serge A. Trines, MD, PhD, Stefan E. Verstraeten, MD, Bart J.A. Mertens, PhD, Robert J.M. Klautz, MD, PhD, Jerry Braun, MD, PhD, Thomas J. van Brakel, MD, PhD. S0022- 5223(19)31672-1. 

3 Bulava A et al.: Correlates of Arrhythmia Recurrence After Hybrid Epi- and Endocardial Radiofrequency Ablation for Persistent Atrial Fibrillation. (Circ Arrhythm Electrophysiol. 2017;10:e005273. OI:0.1161/CIRCEP.117.005273.