Position fixing device for radiotherapy of head and neck

The utility model relates to a body position fixer for the radiotherapy of a head and a neck which is provided with a fixed bottom plate, wherein a movable regulating plate is arranged on a half position of the fixed bottom plate and is provided with a supporting frame, and a head supporting plate is hinged on a supporting frame through a transverse rotating shaft. A pillow is arranged on the head supporting plate, a fixed wedge block is arranged below the head supporting plate, and a guiding groove is arranged on the movable regulating plate. A movable wedge block is arranged in the guiding groove, and the fixed wedge block and a movable wedge block are matched to complete the longitudinal angle regulation of the head supporting plate. A longitudinal rotating shaft is arranged on a longitudinal side at one side of the movable regulating plate and is inserted in a supporting clamping plate on a corresponding side edge of the fixed bottom plate, and an air bag is arranged between the lower part of the longitudinal side at the other side of the movable regulating plate and the fixed bottom plate. By using the inflation and the deflation of the air bag, the transverse angle regulation of the head supporting plate is completed, and a fixed shoulder plate which has the same height as the transverse side edge of the head supporting plate is arranged on the other half position of the fixed bottom plate. The utility model has the advantages of simple structure, integration, bidirectional, two-dimensional and continuous regulation, convenient operation, time saving and labor saving.