Balloon-expandable intranasal stent

Abstract

The invention discloses a sacculus-expansion type intranasal stent. Specifically, the intranasal stent is expanded or shrunk under the effect of external force and does not have an expansion or shrinkage capability; the intranasal stent is matched with a paranasal sinus or a nasal cavity with a lesion in shape; when the intranasal stent stays in an expanded state, the stent is divided into a closeend, a waist part and a far end, wherein the cross section area of the close end is S1, the cross section area of the waist part is S2, the cross section area of the far end is S3, and S2 is smallerthan S1 and S3. The intranasal stent is used for treating noses and nasosinusitis, and implanted into the paranasal sinus or the nasal cavity with the lesion after an operation to support the paranasal sinus or the nasal cavity, eliminate inflammation of the paranasal sinus or the nasal cavity and prevent mucosa of the paranasal sinus or the nasal cavity from synechia.

Description

technical field [0001] The invention relates to the field of medical equipment for treating rhinosinusitis, in particular to a balloon-expandable intranasal stent. Background technique [0002] The nasal cavity and sinuses are located below the skull, above the throat and mouth, and between the eye sockets. Nasal cavity and sinus lesions often spread to nearby tissues, which can cause various complications. Usually, rhinosinusitis is found in the nasal examination, with purulent secretions in the nasal passages or olfactory clefts, thickening or polypoid changes of the middle turbinate and middle nasal passage mucosa. For multiple sinusitis, negative pressure replacement therapy can be used, and for suppurative maxillary sinusitis, maxillary sinus puncture can be used. People with mechanical obstruction factors such as nasal polyps, hypertrophy of the middle turbinate, curved nasal septum, and hypertrophy of the adenoids may hinder the ventilation and drainage of the sinus...

AI Technical Summary

Problems solved by technology

However, this kind of treatment is only short-lived. The drug acts on the inflamed area for a short time and the area of ​​action is limited, so the treatment effect on inflammation is not good.

Moreover, within half a month after the operation, the sinuses and nasal mucosa are prone to adhesions, which will block the normal ventilation function.

[0005] Therefore, there is currently a lack of an effective treatment for rhinosinusitis postoperative inflammation and postoperative mucosal adhesions.

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