Bioreactor

The utility model discloses a bioreactor, comprising an upper cover and a lower cover which are respectively provided with a concave cavity; the concave cavities of the upper cover and the lower cover are folded face to face and fixed as a box body; the internal cavity of the box body is provided with a culture plate by which cerebrospinal fluid can pass; the culture plate is covered by a polyether sulfone semipermeable membrane; the culture plate is embedded at the middle and lower part of the concave cavity of the lower cover and between the upper cover and the lower cover; spaces for the flowing of cerebrospinal fluid are respectively arranged above and below the culture plate; the upper cover is provided with an input nozzle and the lower cover is provided with an output nozzle; and the upper end surface of the upper cover is provided with a plurality of holes through which gas enters the box body. The bioreactor leads the cerebrospinal fluid of patients with dysfunction of central nervous system can be c