Tongue-shaped five-jaw type auditory ossicle prosthesis

Abstract

The invention discloses a tongue-shaped five-jaw type auditory ossicle prosthesis. The prosthesis comprises a top plate, a connecting rod and a stapes clamp; the side edge of the top plate is providedwith an S-shaped supporting tongue body, the supporting tongue body can be matched with the malleus, and the top plate is connected with the connecting rod through a ball-and-socket joint; the stapesclamp is of a five-jaw structure. The supporting tongue body is arranged to be matched with the malleus so that good support can be formed between the auditory ossicle prosthesis and the malleus, andthe stability is enhanced; the top plate is connected with the connecting rod through the ball-and-socket joint, the angle between the top plate and the connecting rod can be flexibly and conveniently adjusted, and requirements of different patients can be met; the stapes clamp is arranged to be of the five-jaw structure, so that the tightness of the stapes clamp is appropriate when connected with the stapes, and the stapes cannot be injured due to excessively high tightness and cannot fall off due to excessively low tightness.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a tongue-shaped five-claw type auditory ossicle prosthesis. 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. Most commonly, the incus is damaged. If the incus injury results in a discontinuity or fixation between the tympanic membrane and the stapes head, vibrations from the tympanic membrane cannot be effectively transmitted to the stapes head, resulting in conductive hearing loss. When the damaged incus is replaced by the auditory ossicle prosthesis, the vibration from the tympanic membrane...

AI Technical Summary

Problems solved by technology

When using the existing auditory ossicle prosthesis, it is found that the stability between the malleus and the malleus is poor, the range of motion is limited due to the fixed top plate and the connecting rod, and the hard connection cannot bear the impact; in addition, the stapes clamp Generally four claws, seven claws or eight claws, there is a problem of being too loose or too tight when connected to the stapes

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