Radiofrequency Therapy Systems, Tissue Ablation, Nerve Fiber
Definition : Radio-frequency (RF) therapy systems used for selective ablation (therapeutic lesions) of nerve pain fibers. These systems, usually consist of a generator in the lower end of the RF spectrum (500 kHz or less is typical) and needlelike tubes as electrodes, usually with a length from 9 to 30 cm (3.5 to 12 inches) and a diameter from 12 to 22 G that are insulated except for the tip. Selective ablation of pain fibers is possible because they are small and do not have a lipid sheath (unmyelinated), making them less resistant to heat than motor and tactile nerve fibers. Pain nerve fiber ablation RF therapy systems are used to treat some chronic facial pains (e.g., trigeminal neuralgia) and other intractable pain, mostly in cancer patients, usually by ablation in the spinal cord (cervical cordotomy) or in the brain (cingulotomy).
Entry Terms : "Nerve Fiber Ablation Systems" , "Pain Nerve Fiber Ablation Systems"
UMDC code : 18803