Angiography tube

The utility model discloses a radiography tube which comprises an outer sleeve extending in the vertical direction and an inner sleeve extending in the vertical direction. The radiography tube is inserted into the outer sleeve in a penetrating mode, the bottom end of the radiography tube extends out of the outer sleeve, the bottom end of the radiography tube is provided with a liquid inlet communicated with the interior of the radiography tube, the top end of the radiography tube is connected with a positioning lug, the positioning lug is located outside the outer sleeve, and the positioning lug extends in the direction away from the center line of the radiography tube. A liquid outlet channel is formed in the positioning lug, a liquid outlet is formed in the positioning lug, the liquid outlet is communicated with the liquid outlet channel, the positioning lug can be bent around the joint of the positioning lug and the radiography tube, the radiography tube can move downwards in the outer sleeve, and the posi