Abstract: An assembly is disclosed for positioning elongate instruments for percutaneous procedures. The assembly has a first guiding member with a first body, a first guiding hole extending through the first body for receiving a coiled instrument, the first guiding hole having a first axis. The assembly further includes a second guiding hole, wherein the second guiding hole is coaxial with the first guiding hole and has an essentially cylindrical shape. The first guiding hole extends at a periphery of the second guiding hole. A second guiding member has a second body with opposite first and second main surfaces, a third guiding hole having an essentially cylindrical shape and extending through the second body. The second guiding member is attached or attachable to a periphery of the first guiding member such that the third guiding hole has an axis substantially parallel to the first axis.

Abstract: The present invention relates to a Radiofrequency surgical instrument comprising at least two dry electrodes (3 and 4, or 3 and 5) and a electrode guiding device (6) comprising a main body (7), having a proximal end (73) and a distal end (74), and at least two insertion holes (8 and 81 or 82) guiding said electrodes (3 and 4, or 3 and 5), said insertion holes (8 and 81 or 82) extending through the body (7).

Abstract: The present invention relates to a Radiofrequency surgical instrument comprising at least two dry electrodes (3 and 4, or 3 and 5) and a electrode guiding device (6) comprising a main body (7), having a proximal end (73) and a distal end (74), and at least two insertion holes (8 and 81 or 82) guiding said electrodes (3 and 4, or 3 and 5), said insertion holes (8 and 81 or 82) extending through the body (7).

Abstract: The present invention relates to a method of removing a tumor by radiofrequency ablation, comprising providing a guiding device (6) having at least two first concentric through holes (8, 81, 82) and a plurality of second through holes (10, 11) at a periphery of the guiding device (6). The method further comprising placing the guiding device against the skin of a patient and inserting two first electrodes (3, 4, 5) into the first through holes (8, 81, 82) of the guiding device and into a patient's skin and then applying a first radiofrequency current between the two first electrodes (3, 4, 5). The method further comprising inserting a second electrode (5) through a second through hole (10, 11) and into the patient's skin and then applying a second radiofrequency current between a first electrode (3, 4) and the second electrode (5).

Abstract: The present invention relates to a method of removing a tumor by radiofrequency ablation, comprising providing a guiding device (6) having at least two first concentric through holes (8, 81, 82) and a plurality of second through holes (10, 11) at a periphery of the guiding device (6). The method further comprising placing the guiding device against the skin of a patient and inserting two first electrodes (3, 4, 5) into the first through holes (8, 81, 82) of the guiding device and into a patient's skin and then applying a first radiofrequency current between the two first electrodes (3, 4, 5). The method further comprising inserting a second electrode (5) through a second through hole (10, 11) and into the patient's skin and then applying a second radiofrequency current between a first electrode (3, 4) and the second electrode (5).

Abstract: The present invention is related to a medical device (1) adapted for the ablation of a target volume inside an anatomical organ, said medical device (1) comprising as elements a main body (2), stabilizing means (3) for stabilizing the device relatively to the organ and heating means in the form of a bipolar electrode (10) comprising parts activable by an external radiofrequency generator for heating said target volume, wherein said bipolar electrode comprises a first element having the form of a central anchoring member (5), and a second element having the form of at least two concentric rigid helices or coils (4?,4?,) of predetermined diameter (D) and length (L), said helices surrounding the central anchoring member (5). The present invention also concerns a surgical assembly comprising said medical device and controlling means as well as a process for the specific destruction a target volume inside an organ by means of said medical device or surgical assembly.

Abstract: The present invention is related to a method of realizing percutaneous (transperineal) ablation of prostate tumor regions, using a radio frequency based coiled device. A bipolar electrode assembly comprising an outer helical electrode and an inner electrode arranged concentric with the outer helical electrode, wherein prior to applying radio frequency energy, at least the outer helical electrode is inserted percutaneously into the prostate. An image of the prostate and of the outer helical electrode as inserted is acquired, such that the outer helical electrode is visualized on the image. A graphical representation of a target position of the bipolar electrode assembly is superposed on the image.

Abstract: The present invention relates to a Radiofrequency surgical instrument comprising at least two dry electrodes (3 and 4, or 3 and 5) and a electrode guiding device (6) comprising a main body (7), having a proximal end (73) and a distal end (74), and at least two insertion holes (8 and 81 or 82) guiding said electrodes (3 and 4, or 3 and 5), said insertion holes (8 and 81 or 82) extending through the body (7).