The Cosman Tew Kit is indicated for use for RF lesion making for the treatment of pain. Applications of the TEW Kit may include percutaneous RF lesion making in the trigeminal ganglion for the treatment of trigeminal neuralgia.

The Tew Kit was designed by Dr. John M Tew, MD and Dr. Eric R.Cosman, PhD.* It enables off-axis or straight electrode tip extensions for greater flexibility in lesion size and positioning in the ganglion. It includes an insulated 19 gauge Cannula into which the straight TEW-STC Electrode or the curved- tip TEW-CTC Electrode can be inserted. The Solid Stylet is placed in the Cannula during percutaneous insertion into the foramen ovale. The Stylet is removed, and the Straight TC Electrode is inserted in the Cannula if an axial tip extension is desired. Alternatively, the Curved TC Electrode is inserted into the Cannula if an off-axis tip extension is to extend the lesion off-axis to reach difficult positions, such as the V1 ganglion division. Both electrodes have thermocouple (TC) temperature sensors built into their tips. The TEW Kit comes with the CB112-TC cable that connects the TC Electrodes to the Cosman RF Generators.

TEW-CN, Cannula;

TEW-SS, Solid Stylet;

TEW-CTC, Curved TC Electrode;

TEW-STC, Straight TC Electrode;

CB112-TC, TC Cable;

TEW-IT, Insertion Tool;

TEW-DS, Depth Stop;

TEW-FA, Flushing Adaptor;

TEW-CASE, Case for storage and sterilization.

Same as the TEW Kit but with the C112-TC Cable for the Radionics RFG-3C or RFG-3C Plus (instead of the CB112-TC Cable).

TEW-DS-P, Package of 5 each;

TEW-DS, Depth Stops, individually sterile packed.