Micro negative pressure suction device for wound in oral cavity

The utility model relates to the technical field of medical instruments, and discloses an oral cavity wound micro-negative pressure suction device which comprises a main body mechanism, a connecting mechanism and a micro-negative pressure suction mechanism, the connecting mechanism is located at the left end of the main body mechanism, and the micro-negative pressure suction mechanism is located on the right side of the main body mechanism. The main body mechanism comprises an absorption needle tube, unit scales and a fixed disc, the unit scales are fixedly arranged outside the absorption needle tube, the fixed disc is fixedly installed at the right end of the absorption needle tube, the main body mechanism further comprises a sealing assembly and an absorption tube connector, the sealing assembly is fixedly installed at the left end of the absorption needle tube, and the absorption tube connector is fixedly installed at the right end of the absorption needle tube. The absorption tube connector is movably ins