Self-expansion type plastic sterile three-dimensional water barrier film

The invention discloses a self-expansion type plastic sterile three-dimensional water barrier film, which is applied to the field of spine endoscopic surgery and comprises at least one group of height-adjustable self-expansion type film units, an inflation nozzle and an exhaust nozzle, the inflation nozzle is positioned on the film units and used for inflating, the exhaust nozzle is used for exhausting, and valves are respectively arranged on the inflation nozzle and the exhaust nozzle; the self-expansion type three-dimensional film pasting device is reliable in structure and good in use performance, a three-dimensional structure is formed through a self-expansion type structure of the film pasting unit, the phenomena that in the operation process, flushing fluid overflows during continuous normal saline infusion, the infection risk of an operation area is increased, body clothes of a doctor and a patient are wetted, and medical resources are wasted are avoided, and the sterile environment of the operation ar