Method and device for underskin radiation treatment of adipose tissue

A device for carrying out an underskin radiation-assisted tissue treatment comprising:

• a handpiece comprising:
• a distal part configured to be inserted into a tissue treatment site below the skin;
• a proximal part configured to be held and manipulated outside of a body;
• a first channel configured to provide fluid irrigation through the distal part;
• and
• a second channel formed by a hollow cannula and configured to provide suction through the distal part;
• at least one radiation source, which is either firmly affixed to the hand-piece or detachedly affixed to the hand-piece;
• an optical fiber for lightguiding radiation from said source through the distal part of said handpiece to the tissue treatment site below the skin, the optical fiber comprising one or more superficial grooves having an annular configuration extending circumferentially around the optical fiber that are disposed along a distal end section of the optical fiber, the optical fiber being configured to longitudinally transmit radiation to a distal tip of the optical fiber and radially emit radiation by means of the one or more superficial grooves;
• and
• a reflective element disposed at the tip of the optical fiber for radially reflecting out radiation that is longitudinally transmitted to the tip of the optical fiber;
• wherein said first channel surrounds said optical fiber and said second channel partially surrounds said first channel, and said second channel is transparent or translucent to provide a wider irradiation area;
• and
• wherein the device is configured to provide simultaneous irrigation, irradiation and suction to the tissue treatment site below the skin.