Patent ID: 8740957

Claim:
An interstitial tumor laser thermotherapy device, comprising: a hollow needle with a sharpened point configured for perforating a tissue to be treated; a light guide; a cannula arranged in said hollow needle such that said cannula is movable in said hollow needle to project from said sharpened point of said hollow needle, said light guide being inserted in said cannula, wherein said cannula is provided with an inflatable membrane which is inflatable to form a balloon into which the distal end of said light guide can project, the membrane being housed within said cannula or adherent to said cannula and said membrane being inflatable via a liquid when said cannula projects from said sharpened point of said hollow needle in the tissue perforated by said sharpened point to create a cavity in the tissue to be treated, wherein laser radiation is guided by said light guide into said cavity, said liquid containing at least one light scattering medium, said at least one light scattering medium providing uniform irradiation of said balloon.