Evident MW Ablation

Introducing the Evident™ MW Ablation System

Microwave ablation uses rotation of water molecules to create frictional heat, which results in an ablation zone. The Evident™ MW Ablation System, which uses a 915 MHz frequency, can create ablations within 10 minutes at 45 W with the application of one, two or three antennas simultaneously. This will produce individual lesions at each antenna or one combined lesion when antennas are spaced 1.5 – 2 cm apart.

With microwave ablation, there’s no current flow through the patient, eliminating the need for a patient return pad. The microwave ablation antenna radiates an energetic field into tissue, which creates an active zone of heating, rather than relying on thermal conduction and current flow.

The Evident™ MW Ablation System is an entire system that is matched for soft tissue. Anticipated ablation results in tissue are achieved by inserting the entire radiating section of the antenna into the target tissue and turning on the power. The system automatically shuts off when the set ablation time is reached. Use image guidance to verify that the ablation zone has been achieved.

  • Evident™ MW Ablation System is the fastest ablation system for soft tissue coagulation
  • One of the fastest systems available; ablation procedure duration is up to 60 percent quicker than other radiofrequency ablation products*
  • Evident™ MW Ablation System is the only microwave ablation system available in select countries worldwide that has received U.S. Food and Drug Administration clearance for the partial or complete ablation of nonresectable liver tumors
  • Easy to set up
  • Creates a larger zone of active heating** and is not directly affected by impedance***

* Reference to fastest ablation system: Marketing Language (RITA RFA for Liver Tumor Protocol, Boston Scientific Customer Notification Letter dated 7/29/05)

** References for larger zone of active heating: Wright AS, Lee FT, Mahvi DM. Hepatic microwave ablation with multiple antennae results in synergistically larger zones of coagulation necrosis. Ann Surg Oncol. 2003;10(3):275-283; Wright AS, Sampson LA, Warner TF, Mahvi DM, Lee FT Jr. Radiofrequency versus microwave ablation in a hepatic porcine model. Radiology. 2005;236(1):132-139; Simon CJ, Dupuy DE, Iannitti DA, et al. Intraoperative triple antenna hepatic microwave ablation. AJR Am J Roentgenol. 2006;187(4):W333-340.

*** Reference for not directly affected by impedance: Wright AS, Sampson LA, Warner TF, Mahvi DM, Lee FT Jr. Radiofrequency versus microwave ablation in a hepatic porcine model. Radiology. 2005;236(1):132-139. Haemmerich D, Lee FT Jr. Multiple applicator approaches for radiofrequency and microwave ablation. Int J Hyperthermia. 2005;21(2):93-106. Martin RC 2nd, Scoggins CR, McMasters KM. A phase II study of radiofrequency ablation of unresectable metastatic colorectal cancer with hepatic arterial infusion pump chemotherapy. J Surg Oncol. 2006;93(5):387-393.

 

Evident Microwave Ablation System