The utility model relates to the field of
medical instruments, in particular to a tracheostomy cannula capable of preventing
secretion from overflowing, which comprises a cannula and a penetrating tube, a threaded taper sleeve is arranged at the top of the penetrating tube, a threaded ring is in threaded connection with the surface of the threaded taper sleeve, the inner walls of the threaded taper sleeve and the penetrating tube abut against the surface of the cannula, and a fixing plate is arranged on the surface of the penetrating tube. An air bag is arranged on the surface of the penetrating
pipe and located at the bottom of the fixing plate, an air inlet
pipe is arranged in the fixing plate, one end of the air inlet
pipe is communicated with the interior of the air bag, a plug is detachably connected to the interior of the air inlet pipe, and a penetrating hole is formed in the fixing plate; the protruding part of the air bag enters the incision in advance, part of the air bag makes contact with the
skin of a patient, then the fixing plate is fixed to the proper position of the neck of the patient through the fixing belt, gas is injected into the air bag through the air inlet pipe, the air bag expands to seal the incision, and
secretion is effectively prevented from flowing out. Secretions are effectively prevented from flowing out, and the
nursing difficulty is reduced.