Oscillar prosthesis for tympanic sclerosis

Abstract

The utility model relates to the technical field of medical instruments, and provides an ossicular prosthesis for tympanic sclerosis, comprising: an abutting disc for abutting against the tympanic membrane of a patient; one end of the connecting column is connected with the abutting disc, the other end of the connecting column is provided with a safety limiting piece, the end, away from the abutting disc, of the connecting column is used for being inserted into the inner ear vestibule of the patient, and the safety limiting piece is used for limiting the depth of the portion, inserted into the inner ear vestibule of the patient, of the connecting column; wherein the connecting column is provided with at least one winding ring, and the winding ring is used for adjusting the length of the connecting column. In the process of installing the ossicular prosthesis, when the connecting column needs to be lengthened, a doctor can clamp the winding ring through a clamp so that the two ends of the connecting column can be lengthened; when the connecting column needs to be shortened, a doctor can expand the winding ring with a tool to shorten the two ends of the winding ring. Therefore, the technical effect of quickly and conveniently adjusting the length of the connecting column is achieved. The ossicular prosthesis is more adaptive to the in-ear environment of a patient, and the operation efficiency of a doctor is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a hearing ossicle prosthesis for tympanosclerosis. BACKGROUND

[0002] Tympanosclerosis is a sequelae of otitis media, which is caused by the transparent degeneration and calcification of the lamina propria of the tympanic membrane and the submucosa of the tympanic cavity under the long-term stimulation of chronic inflammation, resulting in fixation of the ossicular chain and causing conductive hearing loss. The middle ear is an important part of the auditory system, mainly composed of the tympanic membrane and the ossicular chain (malleus, incus, stapes). These structures conduct sound waves from the outer ear to the inner ear. The integrity of the ossicular chain is crucial for normal hearing. Due to infection (such as otitis media), trauma, tumor or surgery, the ossicular chain can be damaged or destroyed. This includes stapes and incus sclerosis or destruction, leading to conductive hearing loss. It seriously affects the quality of life of patients. For stapes sclerosis caused by tympanosclerosis or stapes sclerosis caused by ossicular deformity, a hearing ossicle prosthesis is usually used to replace the patient's hardened stapes.

[0003] Today's artificial stapes need to be connected to the long foot of the incus which is in good condition and complete structure, but the incus of the patient with tympanosclerosis is usually fixed or hardened, or the incus and even the malleus are missing in patients with ossicular chain deformity, so the artificial stapes is not suitable. Some doctors choose a complete hearing ossicle prosthesis (which is originally used for the case of missing stapes but the stapes footplate is movable) in this case. The patient's hardened stapes and footplate are removed during the operation to expose the vestibular window, and the fascia is laid on the outside of the vestibular window to replace the hardened stapes footplate. Then the hearing ossicle prosthesis base is placed on the outside of the temporal muscle fascia, and the other end of the hearing ossicle prosthesis is placed on the inside of the tympanic membrane, so that the vibration of the tympanic membrane can be transmitted to the inner ear. However, the fascia may become thin or cannot survive after the operation due to some factors. In this case, the hearing ossicle prosthesis may penetrate the fascia during movement and insert into the vestibular pool, causing damage to the inner ear of the patient. Since the application of this hearing ossicle in this case has long-term safety risks, this surgical method has not been widely used in otology surgery, so that the hearing loss problem of most patients with tympanosclerosis cannot be solved by surgery.

[0004] Therefore, the above-mentioned technical defects need to be changed. CONTENT OF THE UTILITY MODEL

[0005] In view of the above-mentioned deficiencies of the prior art, the purpose of the present application is to provide a hearing ossicle prosthesis for tympanosclerosis, which can adapt the hearing ossicle prosthesis to the middle ear environment of the patient with tympanosclerosis, and enable the doctor to quickly and conveniently adjust the length of the connecting column and improve the surgical efficiency of the doctor.

[0006] The technical scheme adopted by the present application to solve the technical problem is as follows: a hearing ossicle prosthesis for tympanosclerosis, comprising:

[0007] an abutting disc for abutting on the tympanic membrane of a patient;

[0008] and a connecting column, one end of the connecting column being connected with the abutting disc, the other end of the connecting column being provided with a safety limiting piece, the end of the connecting column away from the abutting disc being used for insertion into the vestibule of the inner ear of the patient, and the safety limiting piece being used for limiting the depth of insertion of the connecting column into the vestibule of the inner ear of the patient;

[0009] wherein at least one winding ring is arranged on the connecting column, and the winding ring is used for adjusting the length of the connecting column.

[0010] The embodiment is further provided with:

[0011] a connecting section, one end of the connecting section being connected with the abutting disc, and the connecting section being provided with the winding ring;

[0012] and an insertion section, the other end of the connecting section being connected with the insertion section;

[0013] wherein the safety limiting piece is arranged between the connecting section and the insertion section, and the connecting section and the insertion section are integrally formed.

[0014] The embodiment is further provided with:

[0015] The outer diameter of the insertion section gradually decreases in the direction away from the connecting section, and the length of the insertion section is greater than or equal to 1.5 mm.

[0016] The embodiment is further provided with:

[0017] The abutting disc and the safety limiting piece are integrally formed with the connecting column.

[0018] The embodiment is further provided with:

[0019] The connecting column is a titanium metal column, and the abutting disc is a titanium metal disc.

[0020] The outer surfaces of the abutting disc and the connecting column are both provided with an oxidation layer.

[0021] Compared with the prior art, the application provides an ossicular prosthesis for tympanosclerosis, in the process of installing the ossicular prosthesis, when the connecting column needs to be elongated, the doctor can use the clamp to clamp the winding ring to elongate the two ends thereof; when the connecting column needs to be shortened, the doctor can use the tool to expand the winding ring to shorten the two ends thereof. Thus, the technical effect of quickly and conveniently adjusting the length of the connecting column is achieved. The ossicular prosthesis is more suitable for the middle ear environment of the patient, and the operation efficiency of the doctor is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 is a whole structure schematic diagram of an ossicular prosthesis for tympanosclerosis provided by the present embodiment;

[0024] Figure 2 is a partial structure enlarged schematic diagram of an insertion section of an ossicular prosthesis for tympanosclerosis provided by the present embodiment;

[0025] Figure 3 is a structure enlarged schematic diagram of a winding ring of an ossicular prosthesis for tympanosclerosis provided by the present embodiment.

[0026] In the figure: 1, abutting disc; 11, through hole; 2, connecting column; 21, safety limiting piece; 22, winding ring; 23, connecting section; 24, insertion section; 241, convex ring. DETAILED DESCRIPTION

[0027] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation on the present application.

[0028] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0029] In the description of the present application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] In addition, the technical features involved in the different embodiments of the utility model described above can be combined with each other as long as there is no conflict between them.

[0031] The utility model provides a kind of ossicular prosthesis for tympanosclerosis as shown in Figure 1 It is shown, a kind of ossicular prosthesis for tympanosclerosis, for replacing the anvil and malleus (ossicles) of tympanosclerosis, can help patient recover part hearing. Its main structure includes: abutment disc 1 and connecting column 2, abutment disc 1 is used to abut on the tympanic membrane of patient;Connecting column 2 is connected with abutment disc 1 at one end, and the other end of connecting column 2 is provided with safety limiting piece 21, and the end of connecting column 2 away from abutment disc 1 is used to be inserted into the vestibule of patient's inner ear, and safety limiting piece 21 is used to limit the depth of connecting column 2 inserted into the vestibule of patient's inner ear. Among them, at least one winding ring 22 is provided on connecting column 2, and the winding ring 22 is used to adjust the length of connecting column 2. In some embodiments, connecting column 2 and abutment disc 1 are integrally formed, which can realize better vibration transmission effect and improve the stability of artificial anvil. In order to ensure the use experience of patient and improve the transmission efficiency of sound, connecting column 2 and abutment disc 1 are made of light and high-strength material. Preferably, connecting column 2 is a pure titanium metal column, and abutment disc 1 is a pure titanium metal disc. Further, scale marks are provided on winding ring 22, which facilitates doctors to adjust the length of ossicular prosthesis.

[0032] In the process of installing the ossicular prosthesis, when the connecting column 2 needs to be lengthened, the doctor can use the clamp to clamp the winding ring 22 to lengthen its two ends; when the connecting column 2 needs to be shortened, the doctor can use the tool to expand the winding ring 22 to shorten its two ends. Thus, the technical effect of quickly and conveniently adjusting the length of the connecting column 2 is achieved. The ossicular prosthesis is more suitable for the environment in the patient's ear, and the doctor's operation efficiency is improved.

[0033] Before installing the ossicular prosthesis, the doctor needs to first clean the already hardened stapes according to the stapes hardening condition of the patient (usually the hardened stapes and the bottom plate need to be removed); then place the temporalis fascia outside the vestibular window, place the base of the ossicular prosthesis outside the temporalis fascia, and then take a small amount of adipose tissue and wrap it around the insertion segment of the ossicular prosthesis. The adipose tissue and the safety limiting piece 21 can effectively limit the insertion depth of the connecting column 2. Avoid the ossicular prosthesis from falling into the vestibule. In addition, it should be noted that the compressibility and elasticity of the adipose tissue can maintain the vibration of the ossicles, so that the ossicular prosthesis can continue to vibrate completely and complete the function of sound conduction. During this period, the doctor can expand or compress the winding ring 22 according to the installation position (as shown in Figure 3 ), so as to achieve the technical effect of adjusting the length of the connecting column 2. So that the ossicular prosthesis can be more suitable for the interval between the tympanic membrane and the vestibule of the patient, and other irrelevant tissues can be avoided by bending the connecting column 2.

[0034] Further, as shown in Figure 1 , the connecting column 2 comprises: a connecting segment 23 and an insertion segment 24, one end of the connecting segment 23 is connected with the abutting disc 1, and the winding ring 22 is arranged on the connecting segment 23; the insertion segment 24 is connected with the other end of the connecting segment 23; wherein the safety limiting piece 21 is arranged between the connecting segment 23 and the insertion segment 24, and the connecting segment 23 and the insertion segment 24 are integrally formed.

[0035] It should be noted that the stapes and the stapes bottom plate need to be removed during the operation, the vestibular window is exposed, the temporalis fascia is placed outside the vestibular window, the vestibular window is closed to replace the hardened stapes bottom plate, and the insertion segment 24 is used to be placed outside the temporalis fascia outside the vestibular window. The vibration of the end of the insertion segment 24 can cause the vibration of the endolymph fluid through the temporalis fascia, so as to realize the conduction of sound vibration. The safety limiting piece 21 can help the doctor better control the insertion depth of the insertion segment 24, so as to avoid the insertion segment 24 being inserted too deep or too shallow, and prevent the insertion segment 24 from being excessively inserted into the inner ear vestibular pool of the patient, thereby avoiding harm to the patient.

[0036] Further, as shown in Figure 1 and Figure 2As shown, the insertion section 24 is provided with at least one protruding ring 241 at one end away from the connecting section 23, and the protruding ring 241 is arranged around the outer sidewall of the insertion section 24. It should be noted that the protruding ring 241 can increase the contact area of the insertion section 24 with the lymph node in the vestibule of the inner ear of the patient, so that the vibration of the connecting column 2 is better transmitted to the inner ear, and the hearing level of the patient is improved.

[0037] Further, as shown in Figure 1 and Figure 2 , the outer diameter of the insertion section 24 gradually decreases in the direction away from the connecting section 23, and the length dimension of the insertion section 24 is greater than or equal to 1.5 mm. The position of the ossicular prosthesis in the vestibular pool cannot exceed 1 mm, and when installing the ossicular prosthesis, it is usually necessary to place 1 mm thick adipose tissue below the safety limiting part 21 to support the safety limiting part 21 through the adipose tissue. Prevent the ossicular prosthesis from falling into the vestibular pool.

[0038] Further, as shown in Figure 1 , the safety limiting part 21 is a circular ring structure, which is arranged around the outer sidewall of the connecting column 2, and the outer diameter of the circular ring structure is greater than the outer diameter of the insertion section 24. Further, the outer diameter of the circular ring structure (safety limiting part 21) is greater than the outer diameter of the vestibular window. In some cases, the entire stapes footplate needs to be removed, resulting in a relatively large installation hole. Configuring the diameter of the circular ring structure (safety limiting part 21) to be larger than the diameter of the stapes footplate can avoid the artificial ear from falling into the vestibular pool through the drilled stapes footplate.

[0039] Further, the abutment disc 1 and the safety limiting part 21 are integrally formed with the connecting column 2. The integrally formed structure achieves better vibration transmission effect, and at the same time can improve the stability of the structure.

[0040] Further, as shown in Figure 1 , the abutment disc 1 is provided with a plurality of through holes 11. The abutment disc 1 can be configured with a plurality of through holes 11 of different sizes and shapes. The through holes 11 can not only reduce the overall weight of the abutment disc 1, but also increase the observation field of view during the operation of the doctor. The through holes 11 can also be beneficial to the growth of the tympanic membrane tissue, so that the abutment disc 1 is more firmly attached to the tympanic membrane of the patient, preventing the ossicular prosthesis from falling off the tympanic membrane.

[0041] Further, the connecting column 2 is a titanium metal column, and the abutment disc 1 is a titanium metal disc. Titanium metal has high strength and light weight. Moreover, titanium alloy has good biocompatibility and can coexist with human tissues for a long time without causing rejection reactions.

[0042] Further, the outer surface of the abutting disc 1 and the outer surface of the connecting column 2 are both provided with an oxidation layer. The oxidation layer can increase the anti-skid performance of the product surface, facilitate clamping during the operation of the doctor, and make the abutting disc 1 better combined with the tympanic membrane of the patient. At the same time, the oxidation layer can prevent the product surface from reflecting light and affecting the operation of the doctor.

[0043] In summary, the application provides an ossicular prosthesis for tympanosclerosis. In the process of installing the ossicular prosthesis, when the connecting column 2 needs to be elongated, the doctor can use a clamp to clamp the winding coil 22 to elongate the two ends thereof; when the connecting column 2 needs to be shortened, the doctor can use a tool to expand the winding coil 22 to shorten the two ends thereof. In this way, the technical effect of quickly and conveniently adjusting the length of the connecting column 2 is achieved. The ossicular prosthesis is more suitable for the middle ear environment of the patient, and the operation efficiency of the doctor is improved.

[0044] Obviously, the above embodiments are only examples for clearly illustrating, but not limit the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments do not need to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the application.

Claims

1. An ossicular prosthesis for tympanic cavity sclerosis, characterized in that, include: An abutment plate, the abutment plate being used to abut against the patient's tympanic membrane; And a connecting post, one end of which is connected to the abutment plate, and the other end of which is provided with a safety limiting member. The end of the connecting post away from the abutment plate is used to be inserted into the patient's inner ear vestibule, and the safety limiting member is used to limit the depth of the connecting post inserted into the patient's inner ear vestibule. The connecting post has at least one winding ring, which is used to adjust the length of the connecting post.

2. The ossicular prosthesis for tympanic cavity sclerosis according to claim 1, characterized in that, The connecting post includes: A connecting segment, one end of which is connected to the abutment plate, and the connecting segment is provided with the winding ring; And an insertion segment, which is connected to the other end of the connecting segment; The safety limiting member is disposed between the connecting section and the insertion section, and the connecting section and the insertion section are integrally formed.

3. The ossicular prosthesis for tympanic cavity sclerosis according to claim 2, characterized in that, The insertion segment has at least one protruding ring at one end away from the connecting segment, and the protruding ring is arranged around the outer wall of the insertion segment.

4. The ossicular prosthesis for tympanic cavity sclerosis according to claim 2, characterized in that, The outer diameter of the insertion segment gradually decreases in the direction away from the connecting segment, and the length of the insertion segment is greater than or equal to 1.5 mm.

5. The ossicular prosthesis for tympanic cavity sclerosis according to claim 2, characterized in that, The safety limiting component is a ring-shaped structure, which is arranged around the outer wall of the connecting column, and the outer diameter of the ring-shaped structure is larger than the outer diameter of the insertion section.

6. The ossicular prosthesis for tympanic cavity sclerosis according to claim 1, characterized in that, Both the abutment plate and the safety limiting member are integrally formed with the connecting column.

7. The ossicular prosthesis for tympanic cavity sclerosis according to claim 1, characterized in that, The abutment plate has several through holes.

8. The ossicular prosthesis for tympanic cavity sclerosis according to claim 1, characterized in that, The connecting column is a titanium metal column, and the abutment plate is a titanium metal disc.

9. An ossicular prosthesis for tympanic cavity sclerosis according to claim 1, characterized in that, Both the outer surface of the abutment plate and the outer surface of the connecting post are provided with an oxide layer.

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