Chain type artificial ossicular structure

Abstract

The utility model discloses a chain type artificial ossicular structure which comprises an ossicular disc arranged on one side of a tympanic membrane, an ossicular mechanism used for forming a chain type artificial ossicular, a bone hammering mechanism used for being connected with stapes and a supporting mechanism used for improving the stability of the ossicular disc. The ossicular mechanism is arranged on the side, away from the tympanic membrane, of the ossicular disc, the bone hammering mechanism is arranged at the end, away from the ossicular disc, of the ossicular mechanism, and the supporting mechanism is assembled on the side portion of the ossicular disc. The artificial ossicular implant can be directly implanted between the tympanic membrane and the stapes, implantation of the artificial ossicular can be achieved without multiple operations, the surgical operation difficulty is low, the situation that the postoperative hearing recovery effect is affected due to misoperation is avoided, the bone hammering mechanism is arranged to be matched with the supporting mechanism, the implantation stability of the artificial ossicular can be effectively improved, and therefore the surgical success rate is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of artificial ossicles, in particular to a chain-type artificial ossicle structure. Background Art

[0002] In the prior art, the ossicles of the human body are composed of the malleus, incus and stapes, which are connected to form an ossicular chain. The ossicular chain has the functions of sound transmission and amplification and is the basis for maintaining normal human hearing. Due to various reasons, such as chronic otitis media, the continuity of the ossicular chain may be interrupted or its movement may be restricted, affecting hearing. Among them, the incus and malleus are missing while the stapes remains, resulting in the interruption of the ossicular chain and deafness, which is very common in chronic otitis media. The general treatment method is to implant an artificial ossicle at the missing position, with both ends connected to the stapes and the eardrum respectively to restore the continuity of the ossicular chain, which is equivalent to replacing the functions of the malleus and incus. The eardrum contact end of the titanium ossicle currently used clinically is a circular plane, and the eardrum graft is usually the perichondrium of the tragus with a cartilage piece. The cartilage piece serves as a buffer support to reduce postoperative perforation. To ensure accurate alignment of the artificial ossicle, the area of the cartilage piece needs to exceed the area of the titanium ossicle end. Otherwise, stable connection cannot be achieved and the buffering effect cannot be exerted. However, if the area of the cartilage piece is too large, it will hinder the vibration of the eardrum, reducing its sound transmission efficiency and having a negative impact on the postoperative hearing improvement effect. In addition, the optional transplantation tissue is limited, and postoperative tragal deformation often occurs, affecting the appearance of the patient. Moreover, the remaining autologous incus or malleus head is often discarded in the tympanoplasty using the titanium ossicle currently used clinically.

[0003] Chinese Utility Model Patent with Application No. 201320280652.6 discloses an artificial ossicular chain, which includes an artificial malleus, an artificial incus and an artificial stapes. The artificial ossicular chain is characterized in that it further includes a suspension bracket, which is U-shaped and its bottom is arched reversely to form an Ω-shaped clamp; the Ω-shaped clamp is sleeved on the neck of the hammer handle under the hammer head of the artificial malleus, and the ends of the two side rods of the U-shaped suspension bracket are ball heads, and the diameter of the ball head is greater than the diameter of the side rod. However, the structure of this kind of artificial ossicular chain is relatively complex, and multiple operations are required to implant this kind of artificial ossicle. The surgical operation difficulty is relatively high, and the operation precision requirement for the operator is relatively high. If the operation is improper, it will affect the postoperative hearing recovery effect. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a chain-type artificial ossicle structure.

[0005] To achieve the above purpose, the technical solution proposed by the utility model is:

[0006] A chain-type artificial ossicle structure includes an ossicle disc, the ossicle disc is arranged on one side of the eardrum, and further includes an ossicle mechanism for forming the chain-type artificial ossicle, a malleus mechanism for connecting with the stapes, and a support mechanism for enhancing the stability of the ossicle disc. The ossicle mechanism is arranged on the side of the ossicle disc away from the eardrum, the malleus mechanism is configured at one end of the ossicle mechanism away from the ossicle disc, and the support mechanism is assembled on the side part of the ossicle disc.

[0007] The ossicle mechanism includes an ossicle strut, a main rod assembly, and a connection assembly. The ossicle strut is arranged on the side of the ossicle disc away from the eardrum and is fixedly connected to the ossicle disc. The main rod assembly is configured at one end of the ossicle strut away from the ossicle disc. There are two groups of connection assemblies, and the two groups of connection assemblies are respectively arranged at both ends of the ossicle strut. The main rod assembly is connected to the end of the ossicle strut away from the ossicle disc through one of the connection assemblies.

[0008] The main rod assembly includes an ossicle core rod, an ossicle sleeve rod, and an ossicle screw. The ossicle core rod is arranged between the two groups of connection assemblies. There are two groups of ossicle sleeve rods, and the two groups of ossicle sleeve rods are respectively arranged at both ends of the ossicle core rod and are sleeved with the ossicle core rod. There are two groups of ossicle screws, and the two groups of ossicle screws are respectively arranged at the connection parts of the two groups of ossicle sleeve rods and the ossicle core rod, penetrate through the corresponding ossicle sleeve rods and are threadedly connected with the ossicle sleeve rods. The ossicle screw abuts against the ossicle core rod.

[0009] The connection assembly includes a connection bracket, a connection universal joint, and a connection end frame. The connection bracket is arranged at one end of the ossicle sleeve rod away from the ossicle core rod and is fixedly connected to the ossicle sleeve rod. The connection universal joint is arranged inside the connection bracket and is rotatably connected to the connection bracket through a rotating shaft. The connection end frame is arranged at one end of the connection universal joint away from the connection bracket and is rotatably connected to the connection universal joint through a rotating shaft. The connection end frame and the connection bracket are arranged in a staggered and opposite manner. One of the connection end frames is fixedly connected to the ossicle strut.

[0010] The main rod assembly and the connection assembly together form a universal shaft type ossicle main rod structure.

[0011] The malleus mechanism includes a malleus strut and a malleus contact head. The malleus strut is arranged at one end of the connection end frame away from the ossicle strut and is fixedly connected to the corresponding connection end frame. The malleus contact head is arranged at one end of the malleus strut away from the connection end frame and is fixedly connected to the malleus strut. The malleus contact head is connected to the human malleus footplate.

[0012] It further includes a malleus protection pad, and the malleus protection pad is arranged on the side of the malleus contact head away from the malleus strut and is fixedly connected to the malleus contact head.

[0013] The malleus contact is arranged in a concave arc-shaped contact structure, and the malleus protective pad is located inside the malleus contact.

[0014] The support mechanism includes a support clamp, a support screw, and a support component. The support clamp is arranged on the outer side of one end of the ossicular rod close to the ossicular disc and is clamped with the ossicular rod. The support screw is arranged on one side of the support clamp and penetrates through the support clamp to be threadedly connected with the support clamp. The support screw abuts against the ossicular rod. There are two groups of support components, and the two groups of support components are symmetrically arranged on both sides of one end of the support clamp close to the ossicular disc and are located on both sides of the ossicular disc.

[0015] The support component includes a support rod, a support connecting block, and a support top block. The support rod is arranged on both sides of one end of the support clamp close to the ossicular disc and is fixedly connected with the support clamp. The support connecting block is arranged at the end of the support rod far from the support clamp and is fixedly connected with the support rod. The support top block is arranged on one side of the support connecting block and is fixedly connected with the support connecting block. The side of the support top block far from the support connecting block is arranged flush with the side of the ossicular disc far from the ossicular rod.

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

[0017] The structure is simple, and an ossicular mechanism is provided. It adopts a multi-segment chain-like structure, and the sound transmission effect is excellent. It can be directly implanted between the eardrum and the stapes, and the implantation of the artificial ossicle can be achieved without going through multiple operations. The surgical operation difficulty is low, and the effect of postoperative hearing recovery is avoided from being affected by improper operation. The malleus mechanism and the support mechanism cooperate, which can effectively improve the implantation stability of the artificial ossicle, thereby significantly improving the success rate of the operation. The support mechanism can be selected according to the actual situation, so as to improve the adaptability of the artificial ossicle. Description of the Drawings

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

[0019] Figure 2 is a schematic diagram of the cooperation between the ossicular mechanism and the ossicular disc of the present utility model;

[0020] Figure 3 is a schematic diagram of the structure of the support mechanism of the present utility model.

[0021] In the figure: 1, ossicular disc; 2, ossicular rod; 3, ossicular core rod; 4, ossicular sleeve rod; 5, ossicular screw; 6, connecting bracket; 7, connecting universal joint; 8, connecting end frame; 9, malleus rod; 10, malleus contact; 11, malleus protective pad; 12, support clamp; 13, support screw; 14, support rod; 15, support connecting block; 16, support top block. Detailed implementation mode

[0022] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] A chain-type artificial ossicle structure includes an ossicle disc 1, the ossicle disc 1 is arranged on one side of the eardrum, and further includes an ossicle mechanism for forming the chain-type artificial ossicle, a malleus mechanism for connecting with the stapes, and a support mechanism for improving the stability of the ossicle disc 1. The ossicle mechanism is arranged on the side of the ossicle disc 1 away from the eardrum, the malleus mechanism is configured at one end of the ossicle mechanism away from the ossicle disc 1, and the support mechanism is assembled on the side part of the ossicle disc 1. The overall structural schematic diagram of the present utility model is as Figure 1 shown.

[0024] The ossicle mechanism includes an ossicle strut 2, a main rod assembly, and a connecting assembly. The ossicle strut 2 is arranged on the side of the ossicle disc 1 away from the eardrum and is fixedly connected to the ossicle disc 1. The main rod assembly is configured at one end of the ossicle strut 2 away from the ossicle disc 1. There are two groups of connecting assemblies, and the two groups of connecting assemblies are respectively arranged at both ends of the ossicle strut 2. The main rod assembly is connected to the end of the ossicle strut 2 away from the ossicle disc 1 through one group of connecting assemblies. The ossicle mechanism cooperates with the ossicle strut 2, the main rod assembly, and the connecting assembly to form a multi-section chain-like artificial ossicle structure. Among them, the ossicle strut 2 is used as the connecting structure between the artificial ossicle and the ossicle disc 1, the main rod assembly is used as the main body part of the artificial ossicle, and the connecting assembly is used as the universal connecting structure on the artificial ossicle. The installation angle of the artificial ossicle can be adjusted through the connecting assembly, and the connecting assembly has a locking function. The installation angle of the artificial ossicle can be fixed by locking the connecting assembly. The cooperation schematic diagram of the ossicle mechanism of the present utility model and the ossicle disc 1 is as Figure 2 shown.

[0025] The main rod assembly includes an ossicle core rod 3, an ossicle sleeve rod 4, and an ossicle screw 5. The ossicle core rod 3 is arranged between the two groups of connecting assemblies. There are two groups of ossicle sleeve rods 4, and the two groups of ossicle sleeve rods 4 are respectively arranged at both ends of the ossicle core rod 3 and are sleeved on the ossicle core rod 3. There are two groups of ossicle screws 5, and the two groups of ossicle screws 5 are respectively arranged at the connection between the two groups of ossicle sleeve rods 4 and the ossicle core rod 3 and penetrate the corresponding ossicle sleeve rods 4 and are threadedly connected with the ossicle sleeve rods 4. The ossicle screw 5 abuts against the ossicle core rod 3. The main rod assembly cooperates with the ossicle core rod 3, the ossicle sleeve rod 4, and the ossicle screw 5 to form the main body part of the artificial ossicle. Among them, the ossicle core rod 3 is used as the main body structure of the artificial ossicle, the ossicle sleeve rod 4 is used to jointly form a telescopic artificial ossicle structure with the ossicle core rod 3, and the ossicle screw 5 is used to realize the relative positioning between the ossicle sleeve rod 4 and the ossicle core rod 3, so as to realize the fixation of the length of the artificial ossicle.

[0026] The connecting component includes a connecting bracket 6, a connecting universal joint 7 and a connecting end bracket 8. The connecting bracket 6 is arranged at one end of the ossicular sleeve rod 4 away from the ossicular core rod 3 and is fixedly connected to the ossicular sleeve rod 4. The connecting universal joint 7 is arranged inside the connecting bracket 6 and is rotatably connected to the connecting bracket 6 through a rotating shaft. The connecting end bracket 8 is arranged at one end of the connecting universal joint 7 away from the connecting bracket 6 and is rotatably connected to the connecting universal joint 7 through a rotating shaft. The connecting end bracket 8 and the connecting bracket 6 are arranged in a staggered and opposite manner. One group of connecting end brackets 8 is fixedly connected to the ossicular strut 2. The main rod component and the connecting component together form a universal shaft type ossicular main rod structure. The connecting component forms a universal connection structure of the artificial ossicle through the cooperation of the connecting bracket 6, the connecting universal joint 7 and the connecting end bracket 8. Among them, the connecting bracket 6 is used as a connecting structure on the ossicular sleeve rod 4 to provide installation support for the connecting universal joint 7. The connecting universal joint 7 is used to jointly form a universal connection structure of the artificial ossicle with the connecting bracket 6 and the connecting end bracket 8. The connecting end bracket 8 is used as a bracket structure at the end of the artificial ossicle to provide installation support for the ossicular strut 2 and the malleus mechanism. The locking and positioning of the connecting component can be achieved by tightening the screw between the rotating shaft and the connecting bracket 6.

[0027] The malleus mechanism includes a malleus strut 9 and a malleus contact 10. The malleus strut 9 is arranged at one end of the connecting end bracket 8 away from the ossicular strut 2 and is fixedly connected to the corresponding connecting end bracket 8. The malleus contact 10 is arranged at one end of the malleus strut 9 away from the connecting end bracket 8 and is fixedly connected to the malleus strut 9. The malleus contact 10 is connected to the human malleus footplate. The malleus mechanism forms a malleus installation structure on the artificial ossicle through the cooperation of the malleus strut 9 and the malleus contact 10. Among them, the malleus strut 9 is used to provide installation support for the malleus contact 10, and the malleus contact 10 is used to jointly form a malleus installation structure on the artificial ossicle with the malleus strut 9.

[0028] It further includes a malleus protection pad 11. The malleus protection pad 11 is arranged on the side of the malleus contact 10 away from the malleus strut 9 and is fixedly connected to the malleus contact 10. The malleus contact 10 is set as a concave arc-shaped contact structure. The malleus protection pad 11 is located inside the malleus contact 10. Among them, the malleus protection pad 11 is used as a protection structure on the malleus contact 10 to improve the installation stability between the malleus contact 10 and the malleus footplate.

[0029] The support mechanism includes a support clamp 12, a support screw 13 and a support assembly. The support clamp 12 is arranged on the outer side of one end of the ossicular rod 2 close to the ossicular disc 1 and is clamped with the ossicular rod 2. The support screw 13 is arranged on one side of the support clamp 12 and penetrates through the support clamp 12 to be threadedly connected with the support clamp 12. The support screw 13 abuts against the ossicular rod 2. There are two groups of support assemblies, which are symmetrically arranged on both sides of one end of the support clamp 12 close to the ossicular disc 1 and are located on both sides of the ossicular disc 1. The support mechanism is combined by the support clamp 12, the support screw 13 and the support assembly to form a support structure on the side of the ossicular disc 1, thereby improving the installation stability between the ossicular disc 1 and the eardrum. Among them, the support clamp 12 is used to provide installation support for the support assembly to assemble the support assembly on the ossicular rod 2. The support screw 13 is used to realize the installation positioning between the support clamp 12 and the ossicular rod 2. The support clamp 12 and the ossicular rod 2 can be rotationally adjusted by the support screw 13 to abut against each other, thereby realizing the installation positioning between the support clamp 12 and the ossicular rod 2. The support assembly is used to improve the installation stability between the ossicular disc 1 and the eardrum. The structural schematic diagram of the support mechanism of the present utility model is as Figure 3 shown.

[0030] The support assembly includes a support rod 14, a support connection block 15 and a support top block 16. The support rod 14 is arranged on both sides of one end of the support clamp 12 close to the ossicular disc 1 and is fixedly connected with the support clamp 12. The support connection block 15 is arranged at the end of the support rod 14 far from the support clamp 12 and is fixedly connected with the support rod 14. The support top block 16 is arranged on one side of the support connection block 15 and is fixedly connected with the support connection block 15. The side of the support top block 16 far from the support connection block 15 is flush with the side of the ossicular disc 1 far from the ossicular rod 2. The support assembly is combined by the support rod 14, the support connection block 15 and the support top block 16 to form a support structure to improve the installation stability between the ossicular disc 1 and the eardrum. Among them, the support rod 14 is used to provide installation support for the support connection block 15. The support connection block 15 is used to provide installation support for the support top block 16. The support top block 16 is used to cooperate with the ossicular disc 1 to abut against the eardrum, thereby improving the installation stability between the ossicular disc 1 and the eardrum.

[0031] Working principle:

[0032] When an artificial ossicle needs to be implanted, the support mechanism is selected according to the patient's ear canal condition. When the support mechanism needs to be used, the support mechanism is assembled on the ossicular rod 2, so that the support top block 16 is located on both sides of the ossicular disc 1 and is flush with the ossicular disc 1. Then, the installation angle of the artificial ossicle is adjusted through the connection assembly, and the artificial ossicle is implanted into the patient's ear canal, so that the ossicular disc 1 and the support top block 16 are attached to the eardrum, and the malleus contact head 10 is matched with the malleus footplate, and the implantation operation of the artificial ossicle can be completed. When the support mechanism is not needed, the artificial ossicle can be directly implanted into the patient's ear canal after the installation angle of the artificial ossicle is adjusted.

[0033] The beneficial effects of the present utility model are as follows: the structure is simple, and an ossicular mechanism is provided. It adopts a multi-segment chain-like structure, with excellent sound transmission effect. It can be directly implanted between the tympanic membrane and the stapes, and the implantation of the artificial ossicle can be achieved without multiple operations. The surgical operation difficulty is low, and the effect of postoperative hearing recovery is prevented from being affected by improper operation. The malleus mechanism and the support mechanism cooperate with each other, which can effectively improve the implantation stability of the artificial ossicle, thus significantly improving the success rate of the operation. The support mechanism can be selected according to the actual situation, so as to improve the adaptability of the artificial ossicle.

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

Claims

1. A chain-type artificial ossicular structure, comprising an ossicular plate (1), wherein the ossicular plate (1) is arranged on one side of the tympanic membrane, characterized in that: It also includes an ossicular mechanism for forming a chain-type artificial ossicle, a malleus mechanism for connecting to the stapes, and a supporting mechanism for improving the stability of the ossicular disc (1). The ossicular mechanism is arranged on a side of the ossicular disc (1) away from the tympanic membrane, the malleus mechanism is arranged at one end of the ossicular mechanism away from the ossicular disc (1), and the supporting mechanism is assembled on the side of the ossicular disc (1).

2. The chain-type artificial ossicular structure according to claim 1, characterized in that: The ossicular mechanism comprises an ossicular support rod (2), a main rod assembly and a connecting assembly. The ossicular support rod (2) is arranged on a side of the ossicular plate (1) away from the tympanic membrane and is fixedly connected to the ossicular plate (1). The main rod assembly is arranged at one end of the ossicular support rod (2) away from the ossicular plate (1). Two groups of connecting assemblies are provided. The two groups of connecting assemblies are respectively arranged at two ends of the ossicular support rod (2). The main rod assembly is connected to the end of the ossicular support rod (2) away from the ossicular plate (1) through one of the groups of connecting assemblies.

3. The chain-type artificial ossicular structure according to claim 2, characterized in that: The main rod assembly comprises an ossicular core rod (3), an ossicular sleeve rod (4) and an ossicular screw (5). The ossicular core rod (3) is arranged between two groups of connecting components. The ossicular sleeve rod (4) is provided with two groups. The two groups of ossicular sleeve rods (4) are respectively arranged at the two ends of the ossicular core rod (3) and are sleeved with the ossicular core rod (3). The ossicular screw (5) is provided with two groups. The two groups of ossicular screws (5) are respectively arranged at the connection between the two groups of ossicular sleeve rods (4) and the ossicular core rod (3) and penetrate the corresponding ossicular sleeve rods (4) and are threadedly connected with the ossicular sleeve rods (4). The ossicular screws (5) are in contact with the ossicular core rod (3).

4. The chain-type artificial ossicular structure according to claim 3, characterized in that: The connection assembly comprises a connection bracket (6), a connection universal joint (7) and a connection end frame (8); the connection bracket (6) is arranged at one end of the ossicular sleeve rod (4) away from the ossicular core rod (3) and is fixedly connected to the ossicular sleeve rod (4); the connection universal joint (7) is arranged on the inner side of the connection bracket (6) and is rotationally connected to the connection bracket (6) via a rotating shaft; the connection end frame (8) is arranged at one end of the connection universal joint (7) away from the connection bracket (6) and is rotationally connected to the connection universal joint (7) via a rotating shaft; the connection end frame (8) and the connection bracket (6) are arranged relative to each other in a staggered manner, wherein one group of the connection end frames (8) is fixedly connected to the ossicular support rod (2).

5. The chain-type artificial ossicular structure according to claim 4, characterized in that: The main rod assembly and the connecting assembly together constitute a universal shaft type ossicular main rod structure.

6. The chain-type artificial ossicular structure according to claim 5, characterized in that: The malleus mechanism comprises a malleus support rod (9) and a malleus contact (10), wherein the malleus support rod (9) is arranged at one end of the connecting end frame (8) away from the ossicular support rod (2) and is fixedly connected to the corresponding connecting end frame (8), and the malleus contact (10) is arranged at one end of the malleus support rod (9) away from the connecting end frame (8) and is fixedly connected to the malleus support rod (9), and the malleus contact (10) is connected to the footplate of the malleus of the human body.

7. The chain-type artificial ossicular structure according to claim 6, characterized in that: It also comprises a malleus protection pad (11), wherein the malleus protection pad (11) is arranged on a side of the malleus contact (10) away from the malleus support rod (9) and is fixedly connected to the malleus contact (10).

8. The chain-type artificial ossicular structure according to claim 7, characterized in that: The malleus contact (10) is configured as a concave arc-shaped contact structure, and the malleus protection pad (11) is located on the inner side of the malleus contact (10).

9. The chain-type artificial ossicular structure according to claim 8, characterized in that: The support mechanism comprises a support clamp (12), a support screw (13) and a support assembly. The support clamp (12) is arranged on the outer side of one end of the ossicular support rod (2) close to the ossicular disc (1) and is clamped with the ossicular support rod (2). The support screw (13) is arranged on one side of the support clamp (12) and passes through the support clamp (12) and is threadedly connected with the support clamp (12). The support screw (13) abuts against the ossicular support rod (2). Two groups of support assemblies are provided. The two groups of support assemblies are symmetrically arranged on both sides of one end of the support clamp (12) close to the ossicular disc (1) and are located on both sides of the ossicular disc (1).

10. The chain-type artificial ossicular structure according to claim 9, characterized in that: The support assembly comprises a support rod (14), a support connection block (15) and a support top block (16); the support rod (14) is arranged on both sides of one end of the support clamp (12) close to the ossicular disc (1) and is fixedly connected to the support clamp (12); the support connection block (15) is arranged on one end of the support rod (14) away from the support clamp (12) and is fixedly connected to the support rod (14); the support top block (16) is arranged on one side of the support connection block (15) and is fixedly connected to the support connection block (15); the side of the support top block (16) away from the support connection block (15) is arranged flush with the side of the ossicular disc (1) away from the ossicular support rod (2).

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