The utility model provides a special positioning device for radiotherapy of tumor patients. Relates to the technical field of
medical instruments, the positioning device special for
tumor patient radiotherapy comprises a bottom plate, two sides of the bottom plate are each fixedly provided with two connecting blocks, two sides of the bottom plate are each slidably provided with a sliding block, and the sides, away from each other, of the two sliding blocks are each fixedly provided with a joining block; the same moving plate is fixedly mounted at the tops of the two connecting blocks, the moving plate is slidably mounted at the top of the bottom plate, a passing hole is formed in the moving plate, a gas
storage tank is fixedly mounted at the top of the moving plate, an air extracting pump is fixedly mounted at the bottom of the moving plate, and a connecting
pipe is fixedly mounted at an air outlet of the air extracting pump; and the top end of the connecting
pipe is fixedly connected with the bottom of the gas
storage tank. The positioning device has the advantages of being flexible and convenient to use, capable of being suitable for different patients and body parts, high in applicability and good in positioning effect.