Abstract: A tumor treating fields system and an associated insulated electrode includes at least one electrode sheet applying an alternating electric signal; and an electrical connector detachably connected with the sheet, the sheet includes an individual electrode unit and a first wire connected with the electrode unit, the sheet is detachably connected with the electrical connector through the first wire. The sheet of the insulated electrode is detachably connected with the electrical connector through the first wire, and the sheet includes one electrode unit. When the electrode unit is damaged and is nonfunctional, only the damaged sheet is replaced, reducing the cost of tumor treatment. The electrode units are combined in quantity or adjusted in position according to a patient's tumor site, position and tumor size, to ensure the coverage area for tumor treating fields therapy performed by the insulated electrodes, enhancing the electric field strength for tumor treating fields therapy.

Abstract: A tumor treating fields system includes an electric field generator, generating a plurality of alternating current signals; at least two pairs of insulated electrodes, each of the electrodes includes a plurality of electrode sheets, and an electrical connector with a switching circuit including switches that are respectively connected with the plurality of sheets, each sheet has a temperature sensor; and an adapter, transmitting the plurality of alternating current signals to the respective switch of the switching circuit of the corresponding electrode, the switch individually controls an electrical connection of the adapter to the corresponding sheet to selectively apply the alternating current signals. The present system individually controls each sheet electrically connected with the switching circuit to selectively apply the alternating current signals to the corresponding sheet.

Abstract: A medical drainage stent that includes a stent body, and a proximal portion and a distal portion that are located at two ends of the stent body for connecting a first tissue wall and a second tissue wall in a juxtaposing manner. The stent body is fixed between the first tissue wall and the second tissue wall to provide a drainage channel. The proximal portion of the stent has N extension portions, where a fixed end of the extension portion is fixedly connected with an edge of a proximal end of the stent body, and the other end of the extension portion is a free end in a free state. Structures of the N extension portions at least partially protrude from the stent body in a radial direction, so that the proximal portion of the stent is fixed on the first tissue wall, where N is a positive integer.