Prosthesis of posterior wall of external auditory canal

Abstract

The invention discloses prosthesis of a posterior wall of an external auditory canal, comprising a stent of the posterior wall of the external auditory canal. The stent is curved prosthesis, the thickness of which can be adjusted according to the requirements; the radian of the stent just inosculates the residual anterior wall, upper wall and lower wall of the external auditory canal after open mastoidectomy, thus forming the complete external auditory canal. The prosthesis of the invention can be used for reconstructing the external auditory canal in the open mastoidectomy or any other surgeries requiring external auditory canal reconstruction, thus recovering / imitating the shapes and functions of the external auditory canal and mastoid.

Description

technical field [0001] The invention belongs to the field of medical engineering, and more specifically relates to a prosthesis of the posterior wall of the external auditory canal. Background technique [0002] According to whether the posterior wall of the external auditory canal is preserved, radical mastoidectomy can be divided into two types: canal wall up (CWU) and open (canal wall down, CWD). [0003] Complete-wall radical mastoidectomy completely preserves the posterior wall of the external auditory canal, which is beneficial to the preservation of hearing, but it is often difficult to remove the lesions in the posterior tympanic cavity, resulting in easy recurrence after surgery. In practice, there are often multiple recurrences and repeated Surgery happens. [0004] The basic principle of open radical mastoidectomy is to remove all the lesions in the tympanic cavity, tympanic antrum and mastoid, and make the tympanic cavity, mastoid cavity and tympanic cavity form...

AI Technical Summary

Problems solved by technology

When open surgery is used to completely remove the lesion, the posterior wall of the external auditory canal must be removed. Therefore, even if the ossicular chain reconstruction and tympanoplasty can be performed after the lesion is removed, the structure and function of the external auditory canal will be damaged, which will inevitably affect hearing.

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