Artificial ossicular structure capable of being adjusted in multiple dimensions

Abstract

The utility model discloses an artificial ossicular structure capable of being adjusted in multiple dimensions, which comprises an ossicular disc arranged on one side of a tympanic membrane, an ossicular mechanism used for forming an adjustable ossicular main body, an adjusting mechanism used for adjusting the installation angle of the artificial ossicular in multiple dimensions, and a bone hammering mechanism used for being connected with stapes, the auditory ossicle mechanism is arranged on one side, far away from the tympanic membrane, of the auditory ossicle plate, the adjusting mechanism is assembled between the auditory ossicle plate and the auditory ossicle mechanism, and the ossicle hammering mechanism is arranged at one end, far away from the adjusting mechanism, of the auditory ossicle mechanism. The distance between the bone hammering mechanism and the ossicular disc can be adjusted by adjusting the length of the ossicular, the adjusting mechanism is arranged, the installation angle of the artificial ossicular can be adjusted in a multi-dimensional mode, and therefore the installation requirements of different residual stapes and tympanic membranes can be met; stable installation and connection between the artificial ossicular and the residual stapes can be achieved, and the installation stability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an artificial ossicle structure that can be adjusted in multiple dimensions. Background Art

[0002] In the prior art, among otolaryngology patients today, patients with poor hearing are often encountered. After examination, it is found that a considerable part of them are caused by lesions invading the middle ear, and at the same time, the ossicles in the middle ear may be damaged. At this time, the operation will involve the implantation of artificial ossicles. The artificial ossicles replace the original position of the ossicles and re-establish an effective connection between the eardrum and the stapes head, so that the sound can still be conducted from the eardrum to the inner ear. The average postoperative hearing improvement can reach 17.5 decibels. However, when the stapes is intact, a partial artificial ossicle can be implanted. The base of the partial artificial ossicle is placed on the stapes head and is relatively stable. However, when the middle ear lesion invades the stapes at the same time, the stapes head and the anterior and posterior crura disappear, and only the stapes footplate remains. At this time, a total artificial ossicle needs to be implanted. Now, generally, the feet of the artificial ossicle are directly placed on the footplate. The most widely used ossicular prosthesis at home and abroad is the titanium artificial prosthesis, which has high strength, light weight, no biological toxicity, and no obvious degradation in the body. It is an ideal artificial ossicle material. However, due to the relatively fixed specifications and simple structure of the titanium ossicular prosthesis, it cannot meet the requirements of different surgeons for hearing reconstruction and the patients' demands for improving hearing, which greatly increases the patients' medical expenses.

[0003] The Chinese utility model patent with the application number 202021847667.2 discloses an angle-adjustable artificial ossicle, which includes a first top plate attached to the eardrum, a height adjustment device, a clamping assembly for grasping the stapes, and a vertical screw rod. The first top plate is fixed to the top of the vertical screw rod, and the vertical screw rod is arranged in the height adjustment device. The lower part of the height adjustment device is connected to the clamping assembly; the clamping assembly includes two arc-shaped connecting arms and two clamping seats. The two arc-shaped connecting arms are symmetrically fixed to the lower part of the height adjustment device and are on both sides of the stapes footplate. The free end of the connecting arm is fixed with a clamping seat for connecting the stapes footplate, and a clamping plate is horizontally arranged at the middle position on one side of the clamping seat, and the clamping plate is attached to and connected to the stapes footplate. However, this kind of angle-adjustable artificial ossicle can only perform planar adjustment on the installation angle of the artificial ossicle, and the angle adjustment range of its top plate is limited to three angles: 5°, 0°, and 10°. The angle adjustment range has certain limitations, and the multi-dimensional adjustment of the installation angle of the artificial ossicle cannot be realized, and the flexibility of use is poor. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an artificial ossicle structure that can be adjusted in multiple dimensions.

[0005] To achieve the above object, the technical solution proposed by the present utility model is as follows:

[0006] An artificial ossicle structure that can be adjusted in multiple dimensions, including an ossicle disc, the ossicle disc is arranged on one side of the eardrum, and further includes an ossicle mechanism for forming an adjustable ossicle main body, an adjustment mechanism for adjusting the installation angle of the artificial ossicle in multiple dimensions, and a malleus mechanism for connecting with the stapes. The ossicle mechanism is arranged on the side of the ossicle disc away from the eardrum, the adjustment mechanism is assembled between the ossicle disc and the ossicle mechanism, and the malleus mechanism is configured at one end of the ossicle mechanism away from the adjustment mechanism.

[0007] The ossicle mechanism includes an ossicle main rod and an ossicle core rod. The ossicle main rod is arranged on the side of the ossicle disc away from the eardrum and is connected to the ossicle disc through the adjustment mechanism. The inside of the ossicle main rod is a hollow structure. The ossicle core rod is arranged at one end of the ossicle main rod away from the adjustment mechanism and is inserted into the ossicle main rod. One end of the ossicle core rod away from the adjustment mechanism protrudes from the ossicle main rod.

[0008] It further includes a locking screw. The locking screw is arranged at the connection between the ossicle main rod and the ossicle core rod and passes through the ossicle main rod and is threadedly connected to the ossicle main rod. The locking screw abuts against the ossicle core rod.

[0009] The adjustment mechanism includes an adjustment base block and a universal joint assembly. The adjustment base block is arranged at one end of the ossicle main rod away from the ossicle core rod and is fixedly connected to the ossicle main rod. The universal joint assembly is configured at one end of the adjustment base block away from the ossicle main rod.

[0010] The universal joint assembly includes a universal joint base, a universal joint core block, and a universal joint bracket. The universal joint base is arranged at one end of the adjustment base block away from the ossicle main rod and is fixedly connected to the adjustment base block. The universal joint core block is arranged inside one end of the universal joint base away from the adjustment base block and is rotatably connected to the universal joint base. The universal joint bracket is arranged at the side of one end of the universal joint core block away from the universal joint base and is rotatably connected to the universal joint core block. The universal joint bracket and the universal joint base are arranged in a staggered and opposite manner, and the universal joint core block is located between the universal joint bracket and the universal joint base. The universal joint core block is set as a cross-shaped core block structure.

[0011] It further includes fixing screws. There are two groups of fixing screws. The two groups of fixing screws are respectively arranged at the connections between the universal joint core block and the universal joint base and the universal joint bracket and pass through the corresponding universal joint base or the universal joint bracket. The universal joint base and the universal joint bracket are rotatably connected to the universal joint core block through the fixing screws. The universal joint base, the universal joint core block, the universal joint bracket, and the fixing screws together form a universal connection structure.

[0012] The malleus mechanism includes a malleus base block, a malleus mounting block, and a mounting component. The malleus base block is arranged at one end of the ossicular core rod away from the ossicular main rod and is fixedly connected to the ossicular core rod. The malleus mounting block is sleeved at one end of the malleus base block away from the ossicular core rod and is threadedly connected to the malleus base block. The mounting component is arranged at one end of the malleus mounting block away from the malleus base block.

[0013] The mounting component includes a mounting contact head and mounting side blocks. The mounting contact head is arranged at one end of the malleus mounting block away from the malleus base block and is fixedly connected to the malleus mounting block. There are two groups of the mounting side blocks, and the two groups of the mounting side blocks are symmetrically arranged on both sides of the middle of the mounting contact head and are fixedly connected to the mounting contact head.

[0014] The mounting contact head is arranged as an arc-shaped convex contact head structure. The mounting contact head and the mounting side blocks together form a snap-fit mounting structure to be connected to the human stapes.

[0015] The malleus mechanism and the ossicular mechanism are coaxially arranged to form a linear artificial ossicle structure.

[0016] The beneficial effects of the present utility model are as follows:

[0017] The structure is simple. There is an ossicular mechanism, and the distance between the malleus mechanism and the ossicular disc can be adjusted by adjusting the length of the ossicle. There is an adjusting mechanism, and the installation angle of the artificial ossicle can be adjusted in multiple dimensions, so as to meet the installation requirements between different residual stapes and the eardrum, without the limitation of the angle adjustment range, with strong flexibility in use. There is a malleus mechanism, and stable installation connection between the artificial ossicle and the residual stapes can be achieved, with strong installation stability. Description of the Drawings

[0018] Figure 1 is the overall structure schematic diagram of the present utility model;

[0019] Figure 2 is the structure schematic diagram of the adjusting mechanism of the present utility model;

[0020] Figure 3 is the structure schematic diagram of the mounting component of the present utility model.

[0021] In the figure: 1, ossicular disc; 2, ossicular main rod; 3, ossicular core rod; 4, locking screw; 5, adjusting base block; 6, universal base; 7, universal core block; 8, universal bracket; 9, fixing screw; 10, malleus base block; 11, malleus mounting block; 12, mounting contact head; 13, mounting side blocks. Detailed Embodiment

[0022] The following further describes the present utility model in detail with reference to the drawings.

[0023] An artificial ossicle structure that can be adjusted in multiple dimensions, including an ossicle disc 1, which is arranged on one side of the eardrum. It also includes an ossicle mechanism for forming an adjustable ossicle body, an adjustment mechanism for adjusting the installation angle of the artificial ossicle in multiple dimensions, and a malleus mechanism for connecting with the stapes. The ossicle mechanism is arranged on the side of the ossicle disc 1 away from the eardrum, the adjustment mechanism is assembled between the ossicle disc 1 and the ossicle mechanism, and the malleus mechanism is configured at one end of the ossicle mechanism away from the adjustment mechanism. The overall structural schematic diagram of the present utility model is as shown in Figure 1 shown.

[0024] The ossicle mechanism includes an ossicle main rod 2 and an ossicle core rod 3. The ossicle main rod 2 is arranged on the side of the ossicle disc 1 away from the eardrum and is connected to the ossicle disc 1 through the adjustment mechanism. The interior of the ossicle main rod 2 is a hollow structure. The ossicle core rod 3 is arranged at one end of the ossicle main rod 2 away from the adjustment mechanism and is inserted into the ossicle main rod 2. One end of the ossicle core rod 3 away from the adjustment mechanism protrudes from the ossicle main rod 2. The ossicle mechanism cooperates through the ossicle main rod 2 and the ossicle core rod 3 to jointly form an ossicle structure with adjustable length. Among them, the ossicle main rod 2 is used to provide installation support for the ossicle core rod 3, and the ossicle core rod 3 is used to jointly form an adjustable ossicle structure with the ossicle main rod 2. The overall length of the ossicle can be adjusted by adjusting the insertion length between the ossicle core rod 3 and the ossicle main rod 2.

[0025] It also includes a locking screw 4. The locking screw 4 is arranged at the connection between the ossicle main rod 2 and the ossicle core rod 3 and passes through the ossicle main rod 2 and is threadedly connected to the ossicle main rod 2. The locking screw 4 abuts against the ossicle core rod 3. Among them, the locking screw 4 is used as a locking and positioning structure between the ossicle main rod 2 and the ossicle core rod 3. The locking and positioning between the ossicle main rod 2 and the ossicle core rod 3 can be achieved by rotating the locking screw 4 so that it abuts against the ossicle core rod 3, thereby fixing the length of the ossicle mechanism.

[0026] The adjustment mechanism includes an adjustment base block 5 and a universal joint assembly. The adjustment base block 5 is arranged at one end of the ossicle main rod 2 away from the ossicle core rod 3 and is fixedly connected to the ossicle main rod 2. The universal joint assembly is configured at one end of the adjustment base block 5 away from the ossicle main rod 2. The adjustment mechanism cooperates through the adjustment base block 5 and the universal joint assembly to form a universal connection structure between the ossicle main rod 2 and the ossicle disc 1. Among them, the adjustment base block 5 is used as an installation structure on the ossicle main rod 2 to provide installation support for the universal joint assembly, and the universal joint assembly is used to form a universal connection structure between the ossicle main rod 2 and the ossicle disc 1. The structural schematic diagram of the adjustment mechanism of the present utility model is as shown in Figure 2 shown.

[0027] The universal component includes a universal base 6, a universal core block 7 and a universal bracket 8. The universal base 6 is arranged at one end of the adjustment base block 5 away from the ossicle main rod 2 and is fixedly connected to the adjustment base block 5. The universal core block 7 is arranged inside one end of the universal base 6 away from the adjustment base block 5 and is rotatably connected to the universal base 6. The universal bracket 8 is arranged at the side of one end of the universal core block 7 away from the universal base 6 and is rotatably connected to the universal core block 7. The universal bracket 8 and the universal base 6 are arranged in a staggered and opposite manner, and the universal core block 7 is located between the universal bracket 8 and the universal base 6. The universal core block 7 is arranged in a cross-shaped core block structure. The universal component is combined by the universal base 6, the universal core block 7 and the universal bracket 8 to form a universal connection structure. Among them, the universal base 6 is used as the base structure on the adjustment base block 5 to provide installation support for the universal core block 7. The universal core block 7 is used as the core block structure between the universal base 6 and the universal bracket 8 to provide rotational support for the universal base 6 and the universal bracket 8. The universal bracket 8 is used to jointly form a universal connection structure with the universal base 6 under the action of the universal core block 7.

[0028] It further includes fixing screws 9. There are two groups of fixing screws 9, and the two groups of fixing screws 9 are respectively arranged at the connection parts of the universal core block 7 with the universal base 6 and the universal bracket 8 and penetrate through the corresponding universal base 6 or universal bracket 8. The universal base 6 and the universal bracket 8 are rotatably connected to the universal core block 7 through the fixing screws 9. The universal base 6, the universal core block 7, the universal bracket 8 and the fixing screws 9 jointly form a universal connection structure. Among them, the universal bracket 8 and the universal base 6 can be rotatably connected to the universal core block 7 through the fixing screws 9, and the universal bracket 8 and the universal base 6 can be locked and fixed with the universal core block 7 by tightening the fixing screws 9, so as to realize the locking of the universal connection structure. When it is necessary to fix the installation angle between the ossicle disc 1 and the ossicle mechanism, adjust the installation angle between the two, and then tighten the fixing screws 9, and the installation angle between the ossicle disc 1 and the ossicle mechanism can be fixed.

[0029] The malleus mechanism includes a malleus base block 10, a malleus mounting block 11 and a mounting component. The malleus base block 10 is arranged at one end of the ossicle core rod 3 away from the ossicle main rod 2 and is fixedly connected to the ossicle core rod 3. The malleus mounting block 11 is sleeved on one end of the malleus base block 10 away from the ossicle core rod 3 and is threadedly connected to the malleus base block 10. The mounting component is arranged at one end of the malleus mounting block 11 away from the malleus base block 10. The malleus mechanism is combined by the malleus base block 10, the malleus mounting block 11 and the mounting component to jointly form a detachable malleus structure on the artificial ossicle. Among them, the malleus base block 10 is used as the mounting structure on the ossicle core rod 3. The malleus mounting block 11 is used as the mounting structure on the mounting component to be threadedly connected to the malleus base block 10, so as to realize the detachable installation between the mounting component and the ossicle mechanism. The mounting component is used to cooperate with the human stapes to realize the implantation and installation of the artificial ossicle.

[0030] The installation component includes an installation contact 12 and installation side blocks 13. The installation contact 12 is arranged at one end of the malleus installation block 11 away from the malleus base block 10 and is fixedly connected to the malleus installation block 11. There are two groups of installation side blocks 13, which are symmetrically arranged on both sides of the middle of the installation contact 12 and are fixedly connected to the installation contact 12. The installation contact 12 is set as an arc-shaped convex contact structure. The installation contact 12 and the installation side blocks 13 together form a snap-fit installation structure to connect with the human stapes. The malleus mechanism and the ossicular chain mechanism are coaxially arranged to form a linear artificial ossicle structure. The installation component cooperates through the installation contact 12 and the installation side blocks 13 to cooperate with the human stapes to realize the implantation and installation of the artificial ossicle. Among them, the installation contact 12 is used as the installation structure on the artificial ossicle, and the installation side blocks 13 are used to jointly form a snap-fit installation structure with the installation contact 12 to improve the installation stability between the installation component and the human stapes. The structural schematic diagram of the installation component of the present invention is as Figure 3 shown.

[0031] Working principle:

[0032] When an implantation operation of the artificial ossicle is required, the insertion length between the main ossicle rod 2 and the ossicle core rod 3 is adjusted according to the patient's ear canal condition, and the two are relatively fixed by the locking screw 4, so as to realize the adjustment of the length of the artificial ossicle. Then, the angle between the ossicle disc 1 and the ossicular chain mechanism is adjusted through the universal joint assembly, and the installation angle between the ossicle disc 1 and the ossicular chain mechanism is fixed by the fixing screw 9, and the pre-adjustment of the artificial ossicle can be completed. Then, the artificial ossicle is placed into the patient's ear canal, the ossicle disc 1 is abutted against the eardrum, and the installation component at the other end of the artificial ossicle is connected to the human stapes, and the reconstruction of the ossicular chain can be completed.

[0033] The beneficial effects of the present invention are that the structure is simple, an ossicular chain mechanism is provided, the distance between the malleus mechanism and the ossicle disc can be adjusted by adjusting the length of the ossicle, an adjustment mechanism is provided, and the installation angle of the artificial ossicle can be adjusted in multiple dimensions, so as to meet the installation requirements between different residual stapes and the eardrum, without the limitation of the angle adjustment range, with strong flexibility in use, a malleus mechanism is provided, and stable installation connection between the artificial ossicle and the residual stapes can be realized, and the installation stability is strong.

[0034] The above has described a detailed description of an embodiment of the present invention, but the content is only the preferred embodiment of the present invention and cannot be considered as limiting the implementation scope of the present invention. All equivalent changes and improvements made according to the application scope of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. An artificial ossicular structure that can be adjusted in multiple dimensions, comprising an ossicular plate (1), wherein the ossicular plate (1) is arranged on one side of the eardrum, and is characterized in that: It also includes an ossicular mechanism for constituting an adjustable ossicular body, an adjusting mechanism for adjusting the installation angle of the artificial ossicular body in multiple dimensions, and a malleus mechanism for connecting to the stapes. The ossicular mechanism is arranged on a side of the ossicular disc (1) away from the tympanic membrane, the adjusting mechanism is assembled between the ossicular disc (1) and the ossicular mechanism, and the malleus mechanism is arranged at one end of the ossicular mechanism away from the adjusting mechanism.

2. The multi-dimensionally adjustable artificial ossicular structure according to claim 1, characterized in that: The ossicular mechanism comprises an ossicular main rod (2) and an ossicular core rod (3); the ossicular main rod (2) is arranged on a side of the ossicular disc (1) away from the tympanic membrane and is connected to the ossicular disc (1) via an adjustment mechanism; the interior of the ossicular main rod (2) is arranged as a hollow structure; the ossicular core rod (3) is arranged at one end of the ossicular main rod (2) away from the adjustment mechanism and is plugged into the ossicular main rod (2); the end of the ossicular core rod (3) away from the adjustment mechanism protrudes from the ossicular main rod (2).

3. The multi-dimensionally adjustable artificial ossicular structure according to claim 2, characterized in that: It also includes a locking screw (4), which is arranged at the connection between the ossicular main rod (2) and the ossicular core rod (3) and passes through the ossicular main rod (2) and is threadedly connected with the ossicular main rod (2), and the locking screw (4) abuts against the ossicular core rod (3).

4. The multi-dimensionally adjustable artificial ossicular structure according to claim 3, characterized in that: The adjustment mechanism comprises an adjustment base block (5) and a universal assembly. The adjustment base block (5) is arranged at one end of the ossicular main rod (2) away from the ossicular core rod (3) and is fixedly connected to the ossicular main rod (2). The universal assembly is arranged at one end of the adjustment base block (5) away from the ossicular main rod (2).

5. The multi-dimensionally adjustable artificial ossicular structure according to claim 4, characterized in that: The universal assembly comprises a universal base (6), a universal core block (7) and a universal bracket (8); the universal base (6) is arranged at one end of the adjustment base block (5) away from the ossicular main rod (2) and is fixedly connected to the adjustment base block (5); the universal core block (7) is arranged on the inner side of one end of the universal base (6) away from the adjustment base block (5) and is rotatably connected to the universal base (6); the universal bracket (8) is arranged on the side of one end of the universal core block (7) away from the universal base (6) and is rotatably connected to the universal core block (7); the universal bracket (8) and the universal base (6) are arranged relative to each other in a staggered manner and the universal core block (7) is located between the universal bracket (8) and the universal base (6); and the universal core block (7) is arranged as a cross-shaped core block structure.

6. The multi-dimensionally adjustable artificial ossicular structure according to claim 5, characterized in that: The invention also comprises fixing screws (9), wherein the fixing screws (9) are provided in two groups, and the two groups of fixing screws (9) are respectively arranged at the connection between the universal core block (7) and the universal base (6) and the universal bracket (8) and penetrate the corresponding universal base (6) or the universal bracket (8); the universal base (6) and the universal bracket (8) are rotatably connected to the universal core block (7) through the fixing screws (9); the universal base (6), the universal core block (7), the universal bracket (8) and the fixing screws (9) together constitute a universal connection structure.

7. The multi-dimensionally adjustable artificial ossicular structure according to claim 6, characterized in that: The malleus mechanism comprises a malleus base block (10), a malleus mounting block (11) and a mounting assembly, wherein the malleus base block (10) is arranged at one end of the ossicular core rod (3) away from the ossicular main rod (2) and is fixedly connected to the ossicular core rod (3), the malleus mounting block (11) is sleeved on one end of the malleus base block (10) away from the ossicular core rod (3) and is threadedly connected to the malleus base block (10), and the mounting assembly is arranged at one end of the malleus mounting block (11) away from the malleus base block (10).

8. The multi-dimensionally adjustable artificial ossicular structure according to claim 7, characterized in that: The mounting assembly comprises a mounting contact (12) and a mounting side block (13); the mounting contact (12) is arranged at one end of the malleus mounting block (11) away from the malleus base block (10) and is fixedly connected to the malleus mounting block (11); and the mounting side blocks (13) are provided in two groups, and the two groups of mounting side blocks (13) are symmetrically arranged on both sides of the middle part of the mounting contact (12) and are fixedly connected to the mounting contact (12).

9. The multi-dimensionally adjustable artificial ossicular structure according to claim 8, characterized in that: The mounting contact (12) is configured as an arc-shaped protruding contact structure, and the mounting contact (12) and the mounting edge block (13) together form a snap-fit ​​mounting structure for connection with the stapes of a human body.

10. The multi-dimensionally adjustable artificial ossicular structure according to claim 9, characterized in that: The malleus mechanism and the ossicular mechanism are coaxially arranged to form a linear artificial ossicular structure.

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