Home Search Glossary Deutsch Français

Products U.S.A.

Freezor®

Freezor® is a flexible, single-use, minimally invasive CryoAblation catheter designed to create focal lesions to treat AVNRT, an arrhythmia where procedural precision is of critical importance. Freezor® can create temperatures at its tip as low as -85ºC inside a beating heart. Freezor® offers a site-testing capability - which involves a technique called CryoMapping - which may aid for physicians to avoid unwanted electrophysiological effects on AV node conduction.

Reversibility

In CryoMapping mode, the Medtronic CryoCath system temporarily chills conducting tissue in the target area, creating a reversible electrical effect. This allows for precise site testing and confirmation prior to proceeding with definitive ablation.

CryoAdhesion

CryoAdhesion occurs in CryoMapping mode, ensuring that the catheter tip remains at the target site for a seamless transition to CryoAblation. CryoAdhesion maintains the position of the catheter tip in the beating heart, as the tip firmly attaches to the endocardium upon freezing. The transition from CryoMapping mode to CryoAblation mode is made with a quick touch of the cryoconsole screen.

Pre-clinical studies have shown that Freezor® creates endocardial lesions with minimal tissue disruption and minimal risk of thrombus and stenosis.

Freezor® features

• 7 French diameter
• uni-directional catheter
• 108cm working length
• 4mm ablation segment
• 3 reaches (short, medium, long)
• 4 mapping electrodes with 2-5-2 spacing

Using Freezor®

For detailed safety and usage information, please consult the Freezor® Instructions for Use (IFU).

The impact of CryoMapping on patient outcomes has not been fully characterized.

This device is contra-indicated in patients with active systemic infection, in conditions where manipulation of the catheter would be unsafe (e.g. intracardiac mural thrombus) and in patients with cryoglobulinemia.