Medtronic’s second-generation sheath may facilitate easier access to the inferior veins when treating paroxysmal atrial fibrillation.
Medtronic Inc. officials announce that the Food and Drug Administration (FDA) clearance and U.S. launch of the FlexCath Advance Steerable Sheath, a new enhancement to the Arctic Front Advance Cryoballoon System. This second-generation sheath has an increased degree of deflection and response, providing greater ease compared to the previous generation in reaching the inferior veins of the heart when delivering and positioning the cryoballoon catheter in the left atrium to treat paroxysmal atrial fibrillation (PAF).
The Arctic Front Advance System is used in minimally invasive procedures to isolate the pulmonary veins using coolant. Delivered via a catheter, the cryoballoon technology is associated with faster procedure times than point-by-point radiofrequency ablation1, 2, and better treatment outcomes than drug therapies on the market3. Additionally, the Arctic Front Advance cryoballoon features the new EvenCool Cryo Technology, which optimizes the delivery of coolant inside the balloon; the larger, more uniform cold surface reduces the effort needed to isolate the pulmonary veins, and improves physicians’ ability to treat patients with complicated anatomies as compared to the original Arctic Front Cryoballoon.
“The FlexCath Advance sheath’s ability to maneuver the catheter with a greater range of deflection may help reach the inferior veins and facilitate placement of the cryoballoon, which is a critical step to ensuring treatment success,” states Suneet Mittal, M.D., director, Electrophysiology Laboratory, Arrhythmia Institute of the Valley Health System, Ridgewood, NJ.
The FlexCath Advance Steerable Sheath has a deflection of 135 degrees, compared to the 90 degree deflection rate of its first-generation predecessor. This greater degree of deflection may allow the cryoballoon to be better maneuvered and positioned within the heart to achieve maximum treatment benefit. The sheath includes the following features:
- Radiopaque marker band at 5mm to provide enhanced visibility under fluoroscopy;
- Deflection mechanism with an ergonomic handle that optimizes the movement of the sheath; and
- Hemostasis valve that allows for introduction, withdrawal and exchanging of catheters and guidewires, while preventing air insertion and minimizing blood loss.
“Building upon the Arctic Front System’s proven platform, the FlexCath Advance Steerable Sheath augments the overall efficiency of the procedure,” says Reggie Groves, vice president and general manager of Medtronic’s AF Solutions division. “It completes the Arctic Front Advance System and is the fourth new product we have launched in the U.S. market in two years.”
About the Arctic Front Advance System
The Arctic Front Advance Cryoballoon System and its predecessor have been used to treat more than 50,000 patients in approximately 500 centers across 32 countries. The technologies currently offered include:
- The Arctic Front Advance Cryoballoon, which inflates and fills with coolant to isolate the pulmonary veins for the treatment of PAF;
- The FlexCath Advance Steerable Sheath, which helps deliver and position the cryoballoon in the left atrium;
- The Achieve Mapping Catheter, an intra-cardiac electrophysiology recording catheter used to assess pulmonary vein isolation when treating paroxysmal atrial fibrillation;
- The Freezor MAX Cardiac CryoAblation Catheter, which is a single-point catheter used to provide additional ablations, as needed; and
- The CryoConsole, which houses the coolant, electrical and mechanical components that run the catheters during a cryoablation procedure.
About Atrial Fibrillation
Atrial fibrillation is the most common and one of the most undertreated heart rhythm disorders, affecting more than 7 million people worldwide. It is estimated that half of all diagnosed atrial fibrillation patients fail drug therapy4, and if left untreated, patients have up to a five times higher risk of stroke5 and an increased chance of developing heart failure. PAF is a type of disease in which irregular heartbeats in the upper chambers start and stop suddenly on their own, usually for minutes or days at a time.
In collaboration with leading clinicians, researchers and scientists worldwide, Medtronic offers the broadest range of innovative medical technology for the interventional and surgical treatment of cardiovascular disease and cardiac arrhythmias.
1 Kojodjojo P, O’Neill MD, Lim PB, et al. Pulmonary venous isolation by antral ablation with a large cryoballoon for treatment of paroxysmal and persistent atrial fibrillation: medium-term outcomes and non-randomised comparison with pulmonary venous isolation by radiofrequency ablation. Heart. September 2010;96(17):1379-1384.
2 Sorgente A, Chierchia GB, Capulzini L, et al. Atrial fibrillation ablation: a single center comparison between remote magnetic navigation, cryoballoon and conventional manual pulmonary vein isolation. Indian Pacing Electrophysiol J. December 26, 2010:10(11):486-495.
3 Medtronic, Inc. Arctic Front Cardiac CryoAblation Catheter clinical reports, in support of FDA premarket approval.
4 JAMA 2001; 285:2370-5.
5 Fuster et al. Journal of the American College of Cardiology. 2006; 48:854-906.