Operating knife used for nasal cavity dacryocystotomy with nasal endoscope

Abstract

The invention relates to a nasal cavity scalpel, in particular to a nasal cavity scalpel for cutting the lacrimal sac of the nasal cavity, and belongs to the technical field of medical instruments. The endoscopic nasal cavity dacryocystectomy scalpel comprises a knife handle 1 and a knife head 2 mounted on one end of the knife handle 1. The knife head 2 is sickle-shaped and curved to the coronal plane. There are 3 knife points on the knife head 2 Upturned in the sagittal plane. The scalpel can cut any point on the inner wall of the lacrimal sac without damaging the outer wall of the lacrimal sac when cutting the inner wall of the lacrimal sac. It can also cooperate with the uncinate sickle knife to cut out the ideal shape of the lacrimal sac mucosal flap, open a large lacrimal sac nasal cavity, and effectively flip the mucosal flap, which is beneficial to prevent stoma atresia or stenosis, and greatly improve the lacrimal sac lacrimal sac in nasal endoscopy. Ostomy success rate.

Description

technical field [0001] The invention relates to a nasal cavity scalpel, in particular to a nasal cavity scalpel for cutting the lacrimal sac of the nasal cavity, and belongs to the technical field of medical instruments. Background technique [0002] At present, with the development of sinus surgery and rhino-ocular related surgery, nasal endoscopic lacrimal sac opening has achieved satisfactory results. The key to surgery is also the difficulty. At present, at home and abroad, the lacrimal sac is incised through the nasal cavity under the nasal endoscope. The uncinate sickle knife, the small surgical tip blade, and the right-angle stripper, which are commonly used in nasal endoscopic nasal cavity surgery, are used. The disadvantages of the inner wall are: the angle is not suitable. When cutting the inner wall of the lacrimal sac, you cannot cut the position you want to cut flexibly, and you cannot cut out the ideal shape of the lacrimal sac mucous membrane. When cutting t...

AI Technical Summary

Problems solved by technology

At present, at home and abroad, the lacrimal sac is incised through the nasal cavity under the nasal endoscope. The uncinate sickle knife, the small surgical tip blade, and the right-angle stripper, which are commonly used in nasal endoscopic nasal cavity surgery, are used. The disadvantages of the inner wall are: the angle is not suitable. When cutting the inner wall of the lacrimal sac, you cannot cut the position you want to cut flexibly, and you cannot cut out the ideal shape of the lacrimal sac mucous membrane. It is easy to damage the outer wall of the lacrimal sac when cutting the inner wall of the lacrimal sac

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