The 
nasal cavity stent comprises a 
stent body, the 
stent body is of a tubular structure, a 
spray irrigation channel with an open end and a closed end is integrally formed in the annular side wall of the tubular structure, the open end is used for being connected with a spray and suction source, and spray and suction holes are formed in the side wall of the 
spray irrigation channel. According to the scheme, the characteristics of the 
nasal cavity support are ingeniously utilized, the 
nasal cavity support is not limited by a nasal threshold and a special structure, all-directional flushing, dosing, 
dirt suction and other operations are carried out on mucosa in the nasal cavity, on one hand, operation and control are convenient, on the other hand, nasal cavity 
irrigation and suction of special parts become possible, the nasal cavity flushing removal rate is increased, and the nasal cavity cleaning efficiency is improved. According to the technical scheme, accurate 
drug delivery of special parts is achieved, and the novel nasal cavity 
internal medicine intervention device is a brand new technical scheme for nasal cavity 
internal medicine intervention, is particularly suitable for treatment of diseases such as infection and 
allergy of the nasal cavity, the 
nasopharyngeal cavity and the 
eustachian tube, is also suitable for treatment in the nasal cavity mucosa 
perioperative period after a nasal operation, promotes mucosa 
recovery and prevents adhesion and relapse.