Puncture device body and air blocking sealing device of disposable puncture device

The utility model belongs to a puncture device body and an air blocking sealing device of a disposable puncture device and relates to an operative instrument matched with a thoracic cavity and abdominal cavity endoscope. The puncture device body and the air blocking sealing device of the disposable puncture device are suitable for use with the puncture device and are operative instruments used for establishing a thoracic cavity and abdominal cavity operative work channel in the examination and operative processes of the thoracic cavity and abdominal cavity endoscope. The puncture device body and the air blocking sealing device of the disposable puncture device comprise the puncture body device and the air blocking sealing device; an air blocking sealing device mounting hole is formed in the upper part of the puncture device body; the air blocking sealing device is arranged in the air blocking sealing device mounting hole; an air blocking sealing shield is arranged at the upper part of the air blocking sealing device mounting hole; a puncture cone guide shield is matched with an oblique conical surface of the air blocking sealing shield by an inner hole; the puncture device body fixedly arranged on a positioning boss of the puncture cone guide shield comprises the puncture device body, an exhaust pipe, an exhaust core, an air inlet valve, an arc sealing seat, an air blocking sealing shield, the puncture cone guide shield, a movable plug cover and an air blocking movable plug; the air blocking sealing device comprises an air blocking sealing sleeve, a support ring, a seal ring, a compressing piece and a safety sealing piece.