self-expanding intranasal stent

Abstract

The invention discloses a self-expanding intranasal stent. Specifically, the intranasal stent is a self-expanding intranasal stent. The intranasal stent expands in a natural state, and there is an expansion force during expansion to make the intranasal stent close to the sinuses or the inner wall of the nasal cavity, and at the same time, this expansion force will not over-expand the sinuses or nasal cavity; the intranasal stent is conformable to the diseased sinus, and the intranasal stent is divided into proximal, waist and distal ends in the natural expansion state. , the cross-sectional area of ​​the proximal end is S1, the cross-sectional area of ​​the waist is S2, and the cross-sectional area of ​​the distal end is S3, and S2<S1 and S2<S3. The intranasal stent of the present invention is used to treat rhinosinusitis. After the operation, the intranasal stent is implanted into the diseased sinus or nasal cavity to support the sinus or nasal cavity, to eliminate inflammation of the sinus or nasal cavity, and to prevent sinus or nasal mucosa Sticking occurs.

Description

technical field [0001] The invention relates to the field of medical equipment for treating rhinosinusitis, and more particularly relates to a self-expanding 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 ...

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.

Images