Applicator device for ablation by radiofrequency of biological tissues

Abstract

An applicator device (1, 1′) for radiofrequency ablation of biological tissues; the device comprises an electrode whose outer surface is covered with an insulating cover (2, 2″) in a proximal portion, and has a conductive distal portion (3, 3′) whose electrode includes internal refrigeration means (7, 7′); an infusion system with a distal end (13, 6) for infusing a fluid in said tissue; wherein said distal end (13, 6) of the infusion system has an electrically insulating outer cover and is located, in the infusion position for said fluid, at a distance between 2 and 5 millimetres from said outer surface of the internally cooled electrode. The invention also concerns a method for ablation by radiofrequency of biological tissues.

Dependencies are inferred from the claim text.