The invention relates to the technical field of
medical instruments containing radioactive substances and discloses a radioactive lumen
stent which comprises a tube body, a
branch-shaped supporting side wing and a sheet-shaped radioactive core sealed in the wall of the tube body and carrying radioactive
nuclide. The
branch-shaped supporting side wing is used for fixing the
stent at a specific position in a tube cavity to prevent displacement; the radioactive core carries the radioactive
nuclide and also plays a role as an X-
ray marker, and the radioactive
nuclide releases radioactive rays to treat tumor during decaying. The radioactive lumen
stent is simple in structure and high in flexibility, is maintained smooth on the surface, is convenient for implantation, extraction and replacement with the help of an
endoscope and has effects of supporting, draining and treating; due to structure of the radioactive core arranged on the tube body, leakage of the radioactive nuclide can be avoided; the radioactive core is quite thin, thereby having little influence on size of the stent; a sectional
radiation designing mode is adopted, so that 360-degree blind-spot-free
radiation is realized, size of a radioactive area, type of nuclide, position on the support and activity of the nuclide can be adjusted according to clinical features like position and size of the tumor, and individualized precision treatment is realized.