CN203263587U

CN203263587U - Artificial ossicular chain

Info

Publication number: CN203263587U
Application number: CN 201320280652
Authority: CN
Inventors: 田广永
Original assignee: Southern Medical University
Current assignee: Southern Medical University
Priority date: 2013-05-21
Filing date: 2013-05-21
Publication date: 2013-11-06
Anticipated expiration: 2023-05-21

Abstract

The utility model relates to an artificial ossicular chain which comprises an artificial hammer bone (1), an artificial incus (2) and an artificial stirrup bone (3). The artificial ossicular chain is characterized by further comprising a suspension support (4). The suspension support (4) is U-shaped, and the bottom of the suspension support is hunched up reversely to form an omega-shaped clamp (4-1). The neck of a hammer handle (1-2) below a hammer head (1-3) of the artificial hammer bone (1) is sleeved with the omega-shaped clamp (4-1). The artificial ossicular chain is excellent in sound transmission effect and good in stability, and can improve a success rate of the operation remarkably.

Description

A kind of artificial auditory ossicle chain

Technical field

This utility model relates to the prosthese that can be transplanted in body, is specifically related to be transplanted to the artificial auditory ossicle chain of in ear.

Background technology

Ossicular chain is the primary structure of middle ear acoustic system.The ossicular chain of people's in ear is arranged in ear, is connected to form successively by malleus, incus and stapes.In normal auditory system, the fluctuation signal that is gathered extraneous air pressure by auricle is delivered on tympanum through external auditory meatus, make tympanum produce mechanical vibration, this transfer of vibration is to the malleus that sticks together with tympanum, import cochlea into through ossicular chain, by the coupling of cochlear endolymph liquid and basement membrane and the amplification of outer hair cell, by inner hair cells, the mechanical energy of inputting is transformed to Nerve impulse at last and sends auditory nerve to again, and then produce sound.Clinically, conductivity hearing impairment major part is because a certain auditory ossicles in ossicular chain damages or all damage the transmission obstacle that causes sound.

For solving the problems of the technologies described above, numerous medical workers develop various ear bones.Granted publication number discloses a kind of partial-titanium ear ossicle for the utility application of CN 201160920Y, this partial-titanium ear ossicle is by listening a dish, cylinder and stapes articular fovea (also have be referred to as stapes folder) to form, one of described cylinder is connected with listening dish, and the other end is connected with the stapes articular fovea.In fact, above-mentioned utility model patent scheme is equivalent to malleus and the incus in ossicular chain, when described stapes articular fovea is stuck on the stapes foot, described partial-titanium ear ossicle namely is equivalent to one one and is hinged on stapes foot upper cantilever bar, therefore the amplitude of fluctuation of described tin of dish in tympanum is excessive unavoidably, obviously can affect patient's audition, even can cause dislocating, deviating from, damage internal ear when serious dangerous.

Summary of the invention

In view of there is above-mentioned deficiency in prior art, technical problem to be solved in the utility model is to provide a kind of artificial auditory ossicle chain, and this ossicular chain not only has good transaudient effect, and good stability can significantly promote the success rate of operation.

It is as follows that this utility model solves the problems of the technologies described above the scheme that adopts:

A kind of artificial auditory ossicle chain, the artificial auditory ossicle chain comprises artificial malleus, incus replacement prosthesis and artificial stirrup bone, it is characterized in that, also comprises pipe-hanging hook, this pipe-hanging hook is the U font, and oppositely arches upward bottom it, forms a Ω shape card; Described Ω shape is fastened in the cervical region of the tup below hammer handle of described artificial malleus.

Pipe-hanging hook in this utility model such scheme can adopt the method for boring grappling to be anchored on the attic medial wall of middle ear, therefore for fear of two side levers slippage in anchor hole of described pipe-hanging hook, the further improvement of the utility model scheme is, the termination of two side levers of the pipe-hanging hook of described U font is bulb, and the diameter of this bulb is greater than the diameter of described side lever.

Because the artificial auditory ossicle chain is a kind of prosthese, it does not have the various ligaments on the human body ossicular chain, therefore this utility model has been set up the pipe-hanging hook of U font on the basis of existing artificial auditory ossicle chain, utilize its bottom formed Ω shape of oppositely arching upward to be fastened in the cervical region of the tup below hammer handle of artificial malleus, thereby both limited well the amplitude of fluctuation of listening dish on artificial malleus, and can prevent that again artificial stirrup bone from coming off on head of stapes or stapes footplate.This shows, artificial auditory ossicle chain described in the utility model not only transaudient effect is superior, and good stability.

In addition, the Ω shape card in scheme described in the utility model is the cervical region that is enclosed within the tup below hammer handle of artificial malleus, and therefore described pipe-hanging hook can in 360 ° of rotations of cervical region of hammer handle, make the doctor select anchor point to become very convenient in auditory meatus.

Description of drawings

Fig. 1～3 are the structural representation of a specific embodiment of artificial auditory ossicle chain described in the utility model, and wherein, Fig. 1 is front view, and Fig. 2 is upward view, and Fig. 3 is left view.

Fig. 4 is the structural representation (stereo amplification figure) of pipe-hanging hook in Fig. 1～3 illustrated embodiments.

Fig. 5 is the user mode figure of Fig. 1～3 illustrated embodiments.

The specific embodiment

Referring to Fig. 1～3, whole artificial auditory ossicle chain is connected to form by artificial malleus 1, incus replacement prosthesis 2, artificial stirrup bone 3 and pipe-hanging hook 4, and wherein the annexation between the structure of each parts and each parts is as described below.

Referring to Fig. 1～3, artificial malleus 1 is by listening dish 1-1, hammer handle 1-2 and tup 1-3 to connect to form, and wherein, listens dish 1-1 to be made of annular ring and the cross that is located in annular ring; Hammer handle 1-2 extends to form (see figure 1) by the edge of listening dish 1-1 to the upper right side; Tup 1-3 is spherical and is located at the end of hammer handle 1-2.

Referring to Fig. 1～3, incus replacement prosthesis 2 is extended left by the below of hammer handle 1-2 cervical region, and (seeing Fig. 1 and Fig. 2) is bent upwards perk when coiling the 1-1 rear portion for approaching tin, and end is provided with the bone socket 2-1 of stapes, and this bone socket 2-1 is to the claw-like structure of embracing together.

Referring to Fig. 1～3, artificial stirrup bone 3 has oval-shaped stapes footplate 3-1, and its back side is provided with the stapes foot 3-2 of Y shape, and stapes foot end is the bulb that is complementary with bone socket 2-1.

Referring to Fig. 4 and in conjunction with Fig. 1～3, pipe-hanging hook 4 is the U font, and oppositely arching upward in its bottom, forms a Ω shape card 4-1, and this Ω shape card 4-1 is enclosed within the cervical region of tup 1-3 below hammer handle 1-2; The termination of two side lever 4-2 of pipe-hanging hook 4 is bulb 4-3, and the diameter of this bulb 4-3 is greater than the diameter of side lever 4-2.

Referring to Fig. 5, in operation, whole artificial auditory ossicle chain 5 is put in middle ear tympanum 6 position good after, the method that first adopts the boring grappling is anchored at pipe-hanging hook 4 on the attic medial wall 7 of middle ear tympanum 6, cervical region with hammer handle 1-2 below the tup 1-3 of artificial malleus snaps in Ω shape card 4-1 again, then make and listen dish 1-1 to be affixed on tympanum 8, stapes footplate 3-1 is affixed on stapes pedal plate 9 and gets final product.

Claims

1. artificial auditory ossicle chain, the artificial auditory ossicle chain comprises artificial malleus (1), incus replacement prosthesis (2) and artificial stirrup bone (3), it is characterized in that, also comprise pipe-hanging hook (4), this pipe-hanging hook is the U font, and oppositely arches upward bottom it, forms a Ω shape card (4-1); Described Ω shape card (4-1) is enclosed within the cervical region of tup (1-3) the below hammer handle (1-2) of described artificial malleus (1).

2. a kind of artificial auditory ossicle chain according to claim 1, is characterized in that, the termination of two side levers (4-2) of the pipe-hanging hook of described U font (4) is bulb (4-3), and the diameter of this bulb (4-3) is greater than the diameter of described side lever (4-2).