Disposable simple central vein pressure detector used for operation in department of cardiac surgery

The invention relates to the technical field of medical apparatuses and instruments, and particularly discloses a disposable simple central vein pressure detector used for an operation in the department of cardiac surgery. The disposable simple central vein pressure detector comprises a fixed frame, a supporting frame fixedly connected to the upper end of the fixed frame, and a valve body arrangedin the middle of the supporting frame; a guiding sleeve of a C-shaped sleeve-like structure is arranged at the upper end of the fixed frame, a fixed sleeve of a C-shaped sleeve-like structure is arranged at the lower end of the guiding sleeve, and a bottom plate fixedly connected with the guiding sleeve is arranged at the lower end of the supporting frame; two side plates are symmetrically arranged on the left and right sides of the upper end surface of the bottom plate, and a tee body of a block-shaped tee structure is arranged at the lower end of the valve body; through cooperation of the supporting frame and the v