Sharp instrument box

The sharp instrument box comprises a cover body, an opening and closing mechanism, a sliding plate, a sliding groove, a locking mechanism, a push rod, a push groove, a reset spring, a protruding block, a lock disc, a transmission chamber, a groove, a leather sheath, a sealing mechanism, a fixing block, a compressed air bag, an air guide pipe, an air cushion box body and an early warning line. Thebeneficial effects of the utility model are that: the utility model discloses: the beneficial effect is: a circle of early warning line is arranged outside the box body; the effect of limiting the volume placement is achieved; a sliding plate is mounted on the inner side of the top of the cover; therefore, the medical waste in the box body can be prevented from leaking; meanwhile, good sealing performance is kept between the sliding plate and the cover plate; the compressed air bag pushes the air guide groove to inject air into the air cushion; the air cushion expands to be tightly attached tothe side wall of the cove