Sterile easy-to-replace multifunctional dripping double-sleeve with small tissue damage

The invention discloses a sterile easy-to-replace multifunctional dripping double-sleeve with small tissue damage. The device comprises water inlet pipes, a sleeve and a suction pipe. The water inletpipes comprise a water inlet pipe A and a water inlet pipe B. The two pipes are of a broken-line integrated structure. The length direction of the water inlet pipe A is fixedly connected with the inner wall of the sleeve along the length direction of the sleeve. The water inlet pipe B is arranged outside the sleeve, wherein one end of the water inlet pipe is provided with a water inlet pipe opening, and the other end of the water inlet pipe is provided with a matched sealing cap. One end of the suction pipe is in threaded connection with a sleeve threaded structure through a suction pipe threaded structure. An air filtering film is arranged on the side, close to a brush, of the threaded structure of the suction pipe. The device is simple in overall structure and convenient to use. Due to the fact that the sleeve a