Developing radiofrequency technology that allows for maximizing practical efficiencies while maintaining clinical efficacy and patient safety is thus of great interest to relevant stakeholders. In this report, we describe our clinical experience using a disposable, all-in-one RF injection electrode (i.e., cannula, electrode, and injection tube) in patients with chronic pain as part of a multicenter European case-series.

This is a real-world, retrospective, observational, case-series study of patients in Europe who underwent a radiofrequency-based procedure for chronic pain and were treated using a disposable, "all-in-one" RF injection electrode with combined cannula, electrode, and injection tube (Unified RF, Boston Scientific, Valencia, CA USA). Key data and clinical assessments include demographic characteristics, pain diagnosis, baseline, and post-treatment pain scores (Numeric Rating Scale, NRS), and percent pain relief.

To date, 111 enrolled subjects (mean age = 72.5 ± 13.1 years) who underwent an RF procedure for chronic pain using a disposable, all-in-one electrode have been assessed. Mean overall NRS pain score at baseline was 8.1. Patient-reported pain locations were the following: joints (26.1%), back (72.1%), hip (3.6%). The mean follow-up duration among all patients assessed was 259 days. Evaluation of overall pain demonstrated a mean NRS pain score improvement of 3.9-points (p<0.0001) representing a mean overall NRS pain score of 4.2 at last-follow-up. Additional data is being collected and updated results are to be reported.

Results obtained in this evaluation demonstrate that use of a disposable, "all-in-one" RF injection electrode is associated with clinically meaningful pain relief outcomes in patients undergoing radiofrequency procedures for treatment of chronic pain.