Auditory ossicle prosthesis capable of buffering pressure

Abstract

The invention discloses an auditory ossicle prosthesis capable of buffering pressure. The auditory ossicle prosthesis comprises a top disc, a connecting rod and a base, wherein the top disc is provided with a rib, and the bottom of the top disc is provided with a concave cavity sinking inwards; the top disc is in a cover shape, and an annular edge is formed on the periphery of the top disc; the connecting rod comprises an upper connecting rod body, a middle connecting rod body and a lower connecting rod body, wherein the upper connecting rod body, the middle connecting rod body and the lower connecting rod body are sequentially hinged to one another from top to bottom in a Z shape; the top of the upper connecting rod body is connected with the top disc through the enarthrosis, and the bottom of the lower connecting rod body is connected with the base; the bottom of the base is provided with a groove, and the base is also provided with a group of vertical through holes. The structure ofthe top disc is changed, so that when the top disc is in contact with the tympanic membrane, the contact stress can be reduced, and the damage to the tympanic membrane is avoided; the connecting rodis designed into a three-section structure, and the hinge point between the upper connecting rod body and the middle connecting rod body serves as an axle center so that the middle connecting rod bodyand the lower connecting rod body can rotate around the axle center to achieve fine adjustment of the height. The groove and triangular openings in the base can be matched with bulges on the stapes pedal plate, so that the base is more tightly connected with the stapes pedal plate, and healing of surrounding tissue is facilitated.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an auditory ossicle prosthesis capable of buffering pressure. Background technique [0002] Due to disease, trauma or congenital deformity, the auditory ossicles of the middle ear (composed of three ossicles, also known as the ossicle chain, from outside to inside are: malleus, incus, stapes, stapes composed of stapes bow and stapes floor , the latter in contact with the inner ear perilymph, the last structure in the middle ear that transmits vibrations to the inner ear) is usually damaged. Sometimes structures on the malleus and / or incus and stapes plate are damaged so that vibrations from the eardrum cannot be effectively transmitted to the stapes floor, resulting in conductive hearing loss. When the damaged ossicle is replaced by the ossicle prosthesis, the vibration from the tympanic membrane will be transmitted to the stapes floor by the ossicle prosthesis, thereby ...

AI Technical Summary

Problems solved by technology

When the existing auditory ossicle prosthesis is in use, it is found that the top plate of the two contact parts is in contact with the tympanic membrane, and the pressure change in the middle ear cavity causes the tympanic membrane to be subjected to excessive shear stress and normal stress, which will cause damage to the tympanic membrane at the contact position. perforation, or even prolapse of the implant; the top plate and the connecting rod are fixed, and this hard connection method cannot buffer the pressure change of the middle ear cavity, resulting in a significant increase in the normal stress and shear stress of the tympanic membrane at the contact part with the artificial ossicle; in addition, the base It is a solid platform, on the one hand, it is difficult to connect with the foot plate of the stapes, and on the other hand, it is not easy to heal

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