The invention belongs to the technical field of medical apparatus and instruments, and provides a
brain tumor interstitial cavity
fluid circulation intervention device which comprises a brain intervention device, the brain intervention device is of a spherical net structure, and a collecting hole and a discharging hole are formed in the surface of the brain intervention device; the external
circulator is used for being arranged under the
scalp outside the craniocerebral cavity to provide power for circulation of interstitial cavity fluid and serving as an intervention portal; the auxiliary circulation
assembly comprises an auxiliary
circulator and an auxiliary intervention device, and the auxiliary intervention device is of a
balloon structure with holes. The
brain tumor interstitial cavity
fluid circulation intervention device has the functions of accurately monitoring
brain tumor evolution in real time, accurately diagnosing
tumor recurrence in an early stage and directly and locally treating recurrent tumors, and is used for solving the technical problems of whole-course sampling monitoring and accurate diagnosis and treatment after brain malignant tumor operation; particularly, an interventional tool is provided for solving the technical problems of sampling monitoring, early precise diagnosis and direct local treatment in the recurrence and progression stage after brain malignant tumor treatment.