A sterile, semi-flexible, hand-held surgical instrument designed to connect to a radio-frequency (RF) ablation system generator to deliver RF energy to a targeted operative site for soft-tissue ablation (i.e., thermal ablation, therapeutic lesion, or denervation). It includes multiple monopolar electrodes that extend from its tip, once deployed, for application to the treatment site; the electrodes typically include temperature-sensing elements. The device is intended to be used in percutaneous, laparoscopic, or open surgery procedures to ablate tissue typically in the brain/nerves, liver, and/or in small or metastatic tumours. This is a single-use device.