RADIOACTIVE GRAINS AND APPLICATORS Russian patent published in 2023 - IPC A61N5/10 

FIELD: medicine.

SUBSTANCE: brachytherapy device contains: a casing for transfer of one or more radioactive grains so that to provide a possibility of delivery of grains to tumor by ejecting radioactive grains from a distal end of the casing; one or more radioactive grains inside the casing to be implanted to a patient, wherein grains carry atoms of a radioactive alpha-emitting element for the treatment with radiotherapy; and viscous liquid inside the casing, surrounding one or more grains to prevent the release from the casing of child particles of atoms on one or more radioactive grains. A method for loading a needle with radioactive grains is described, in which: a needle having a pointed tip for penetrating tissue is captured so that to prevent needle movement; a radioactive grain is brought to a point adjacent to the needle tip; and the radioactive grain is pushed to the needle through the pointed tip together with viscous liquid. A device for loading radioactive grains contains: a central chamber with the radioactive grain; a passage for the needle, configured to fix the needle in such an orientation, so that the pointed tip of the needle is aligned with the radioactive grain in the central chamber; and a piston for pushing the radioactive grain to the needle fixed in the passage for the needle, wherein the central chamber additionally stores viscous liquid.

EFFECT: use of this group of inventions allows for expansion of the arsenal of technical means.

25 cl, 10 dwg