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  • Spinal catheters designed for introduction between lumbar intervertebral disks to perform ablation by delivering radiofrequency (RF) current through the tissues. These catheters include needle electrodes at the distal tip to deliver the RF current through the tissues, either between two electrodes located at the tip (i.e., bipolar system) or to a neutral electrode located externally on the patient\'s skin (i.e., monopolar systems). The catheter is usually introduced through a hollow needle previously inserted percutaneously in the disc and is then maneuvered (e.g., using a handheld navigating device) around the outer edge of the central nucleus of the disc. Power is supplied to the catheter from a dedicated RF generator that includes connectors and/or adapters specially designed for use with the catheter. RF ablation lumbar intervertebral disc catheters are used in outpatient procedures performed on the lumbar spine, typically to treat chronic long-term discogenic pain.
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