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Freezor MAX

Cardiac CryoAblation Catheter

Indications, Safety, and Warnings



The Freezor® MAX Cardiac CryoAblation Catheter is used as an adjunctive device in the endocardial treatment of paroxysmal atrial fibrillation in conjunction with the Arctic Front® Cardiac CryoAblation Catheter for the following uses: 1) Gap cryoablation to complete electrical isolation of the pulmonary veins 2) Cryoablation of focal trigger sites and 3) Creation of ablation line between the inferior vena cava and the tricuspid valve.


Use of Freezor® MAX cryocatheter is contraindicated in patients with active systemic infections, in patients with cryoglobulinemia and other conditions where the manipulation of the catheter would be unsafe (For example, intracardiac mural thrombus).


Do not re-sterilize this device for purpose of reuse. Do not connect the cryocatheter to a radiofrequency (RF) generator or use it to deliver RF energy because this may cause catheter malfunction or patient harm. Disconnect the catheter's electrical connection prior to defibrillation. The catheter contains pressurized refrigerant during operation, release of this gas into the circulatory system due to equipment failure or misuse could result in gas embolism. Do not pass the catheter through a prosthetic heart valve (mechanical or tissue) to avoid damage to the valve, valvular insufficiency or premature failure of the prosthetic valve. Use adequate fluoroscopic visualization during a transaortic approach to avoid placing the ablation catheter within the coronary vasculature. Do not pull on the catheter, sheath, umbilical cables, or console while the catheter is frozen to the tissue, as this may lead to tissue injury. Always advance and withdraw components slowly to minimize the vacuum created and therefore minimize the risk of air embolism. The Freezor MAX catheter was not studied for safety of changes in anticoagulation therapy in patients with paroxysmal atrial fibrillation. This equipment should be used only by or under the supervision of physicians trained in left atrial cryoablation procedures. Cryoablation procedures should be performed only in a fully equipped facility.

Potential Complications

Potential complications/adverse events from cardiac catheterization and ablation include, but are not limited to the following: Anemia; Anxiety; Atrial flutter; Back pain; Bleeding from puncture sites; Blurred vision; Bradycardia; Bronchitis; Bruising; Cardiac tamponade; Cardiopulmonary arrest; Cerebral vascular accident; Chest discomfort/pain/pressure; Cold feeling; Cough; Death; Diarrhea; Dizziness; Esophageal damage; Fatigue; Fever; Headache; Hemoptysis Hypotension/hypertension; Lightheadedness; Myocardial infarction; Nausea/vomiting Nerve injury; Pericardial effusion; Pulmonary vein stenosis; Shivering; Shortness of breath; Sore throat; Tachycardia; Transient ischemic attack; Urinary infection; Vasovagal reaction; Visual changes.

Refer to the device technical manual for detailed information regarding the procedure, indications, contraindications, warnings, precautions, and potential complications/adverse events. For further information, please call Medtronic at 1-800-328-2518 and/or consult Medtronic’s website at

Caution: Federal Law (USA) restricts this device to sale by or on the order of a physician.