RF Thermolesion Cannulas

Radiofrequency thermolesion is an important and familiar instrument for the decisive reduction or removal of chronic pain in the region of the nervous system.
PAJUNK® supports all common RF procedures with its RF Thermolesion cannulas.

The cannula is positioned using imaging procedures (ultrasound, computer tomography or X-rays). Contrast medium for position control or an analgesic for analgesia may be applied via the Luer-Lock hub. The position of the cannula tip with regard to the motor and sensory nerve branches is reliably verified by means of stimulation control. The surrounding nerve tissue is coagulated in the subsequent application of high frequency current. The extent of the lesion is essentially defined by the length of the active cannula tip. (1)
Thus a range of cannula tip lengths is offered to achieve the desired lesion length :
• 2mm
• 2.5mm
• 4mm
• 5mm
• 10mm

Uniform Coagulation
PAJUNK® RF Thermolesion cannulas are characterized  by a uniform coagulation of the tissue at the cannula tip. (2)


RF Thermolesion cannula
With this widely-used technique, the cannula (conductive by design only at the tip) is advanced with the aid of ultrasound or X-ray to the respective nerve. After introduction of a RF electrode in the cannula, the nerve tissue is lesioned around the active part of the cannula tip.

Left : Ultrasound visible cannula. RTFL SONO Thermolesion cannula is offered complete with Cornerstone Reflectors for remarkable visibility under Ultrasound.   Right:  Uniform Coagulation.  PAJUNK® RF thermolesion cannulas are characterized by a uniform coagulation of the tissue at the cannula tip. (2)

Order Information

1. Rosenow D., Tronnier V., Göbel H. Neurogener Schmerz: Management von Diagnostik und Therapie, Heidelberg: Springer Medizin Verlag 2005; 343–347

2. Vervest A.C.M., Lahaye J.W.T. Lesion profiles of electrode canulas for radiofrequency procedures to teat spinal pain, 8th World Congress of the Pain Clinic, Tenerife, Spain, 1998 May 6–10

3. Hebard S., Hocking G. Two-dimensional mapping to assess direction and magnitude of needle tip error in ultrasound-guided regional anaesthesia, Anaesth. Intensive Care 2011; 39(6): 1076–81

4. Niemisto L., Kalso E.A., Malmivaara A., Seitsalo S., Hurri H. Radiofrequency denervation for neck and back pain (Review), The Cochrane Collaboration 2009

5. van Boxem K., van Eerd M., Brinkhuize T., Patijn J., van Kleef, M., van Zundert J. Radiofrequency and Pulsed Radiofrequency Treatment of Chronic Pain Syndromes: The Available Evidence, World Institute of Pain 2008; 385–393

6. Binder D.S., Nampiaparampil D.E. The provocative lumbar facet joint, Curr. Rev. Musculoskelet Med. 2009; 2: 15–24