A medical full-type artificial auditory ossicle

Abstract

The present invention provides a medical full-type artificial auditory ossicle, comprising a first top plate attached to the eardrum, a height adjustment device, a clamping assembly for grasping the stapes, and a vertical screw. The first top plate is fixed to the top of the vertical screw, the vertical screw is arranged in the height adjustment device, and the lower part of the height adjustment device is connected to the clamping assembly. A clamping plate is provided at the middle position of the clamping seat, and the position of the clamping plate enables the clamping seat to be installed on the stapes according to the conditions of the stapes of different patients. The clamping plate can be attached to the upper or lower part of the stapes to be connected to the stapes, and effectively cope with different stapes conditions through two installation methods. In addition, the clamping seat and the stapes do not need to be filled with objects such as gelatin sponge as in the traditional method, and the two connecting arms can be fixed only by the engagement of two corresponding connecting plates. The operation is simple and the stability is strong, and the situation of the device being separated from the stapes during long-term use is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of medical appliances, and in particular to a medical full-type artificial auditory ossicle. Background Art

[0002] Patients with poor hearing are often seen in ENT departments today. Examination reveals that a significant number of these patients have lesions invading the middle ear, potentially damaging the ossicles. In these cases, surgery often involves the placement of an ossicular prosthesis. The prosthesis replaces the original ossicles, reestablishing an effective connection between the eardrum and the stapes head, allowing sound to be transmitted from the eardrum to the inner ear. The average postoperative hearing improvement can reach 17.5 decibels. However, if the stapes is intact, a partial prosthesis can be placed. The base of a partial prosthesis rests on the stapes head, providing relative stability. However, when middle ear lesions also invade the stapes, the stapes head and anterior and posterior arches disappear, leaving only the stapes baseplate. In these cases, a full prosthesis is required. Currently, the base of the prosthesis is typically placed directly on the baseplate, secured only with gelatin sponge packing, without any other support. This results in poor stability for full prostheses, making postoperative movement prone to displacement and potentially leading to surgical failure. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: in response to the above problems, a medical complete artificial ossicle is proposed, which can ensure that when the stapes head and the anterior and posterior arches disappear and only the stapes base remains, the base of the artificial ossicle can still be stably connected to the stapes base, and there is no need to use gelatin sponge or the like to fill the surrounding gaps for fixation, thereby enhancing the stability of the complete artificial ossicle and improving the success rate of artificial ossicle implantation surgery.

[0004] In order to solve the above technical problems, the technical solution of the present invention is achieved by the following manner: a medical full-type artificial auditory ossicle, comprising a first top plate attached to the eardrum, a height adjustment device, a clamping assembly for grasping the stapes, and a vertical screw, wherein the first top plate is fixed to the top of the vertical screw, the vertical screw is arranged in the height adjustment device, and the lower part of the height adjustment device is connected to the clamping assembly;

[0005] The clamping assembly includes two arc-shaped connecting arms and two clamping seats. The two arc-shaped connecting arms are symmetrically fixed below the height adjustment device and are located on both sides of the stapes base plate. The free ends of the connecting arms are fixed with clamping seats connected to the stapes base plate. A clamping plate is laterally provided in the middle position of one side of the clamping seat, and the clamping plate is fitly connected to the stapes base plate.

[0006] By means of the technical solution of the present invention, the position of the vertical screw in the height adjustment device is first adjusted, thereby changing the position between the first top plate fixed on the vertical screw and the clamping assembly, so that the first top plate can fit together with the tympanic membrane during surgery, and the clamping assembly can be connected to the stapes base plate; when the stapes is relatively complete, the stapes base plate can be placed below the clamping plate when the connecting arm is connected to the stapes, and connected and clamped to the stapes through the side walls below the two clamping seats; when the stapes head and the front and back arches disappear and only the stapes base plate remains, the clamping plate is placed below the stapes base plate, so that the clamping plate can support the stapes base plate from below, thereby preventing the clamping assembly from detaching from the stapes, and effectively coping with different stapes conditions through two installation methods.

[0007] The technical solution further defined in the present invention is:

[0008] The height adjustment device includes an adjusting column and a positioning sleeve, two arc-shaped connecting arms are symmetrically fixed below the adjusting column, the top of the adjusting column is fixedly connected to the positioning sleeve and the adjusting column and the positioning sleeve are connected to each other, the adjusting column is threadedly connected to the external thread on the outside of the vertical screw through a preset internal thread on the inner surface, the vertical screw passes through the positioning sleeve and is arranged in the adjusting column, and the vertical screw can be rotated in the adjusting column through the thread, thereby changing the position of the vertical screw in the adjusting column.

[0009] A threaded hole is reserved on the side wall of the positioning sleeve for threaded connection with the threaded rod. The threaded rod rotates and retracts in the threaded hole and fits and is limited on the side wall of the vertical screw. When the vertical screw is rotated to a suitable position in the adjusting column, the threaded rod is rotated to make it rotate in the threaded hole and gradually approach the vertical screw, thereby limiting the position of the vertical screw in the positioning sleeve. The threaded lifting structure ensures that the vertical screw will not slide out, and the positioning sleeve can further fix the vertical screw, thereby effectively ensuring that the height position of the first top plate will not change in the long term.

[0010] The two connecting plates are fixed on opposite sides of the two connecting arms, and the two connecting plates are staggered front and back on the two connecting arms. The two connecting plates are fixed with latches at equal intervals on the side surfaces away from one end of the connecting arm, and the latches on the two connecting plates are meshed and connected. An arc-shaped auxiliary block for connecting surgical instruments is fixed above the connecting plates. During surgery, after the clamping seat is connected to the stapes, the doctor can use surgical instruments or other objects to clamp on the two auxiliary blocks, pull the two connecting plates together, so that the latches at corresponding positions on the two connecting plates are meshed, and the two meshed connecting plates can fix the two connecting arms, thereby ensuring that the two clamping seats are stably connected to the stapes, and avoiding the situation where the clamping seat is not fixed and thus detached from the stapes.

[0011] The present invention also provides a medical full-type artificial auditory ossicle, comprising a second top plate attached to the eardrum, a connecting seat for facilitating angle adjustment of the second top plate, a height adjustment device, a clamping assembly for grasping the stapes, and a vertical screw, wherein the second top plate is mounted on the connecting seat, the connecting seat is fixed above the vertical screw, the vertical screw is disposed in the height adjustment device, and the lower portion of the height adjustment device is connected to the clamping assembly;

[0012] The clamping assembly includes two arc-shaped connecting arms and two clamping seats. The two arc-shaped connecting arms are symmetrically fixed below the height adjustment device and are located on both sides of the stapes base plate. The free ends of the connecting arms are fixed with clamping seats connected to the stapes base plate. A clamping plate is laterally provided in the middle of one side of the clamping seat, and the clamping plate is fitly connected to the stapes base plate.

[0013] By the technical solution of the present invention, the position of the vertical screw in the height adjustment device is first adjusted, thereby changing the position between the second top plate fixed on the vertical screw and the clamping assembly, so that the second top plate can be fitted with the tympanic membrane during surgery, and the clamping assembly can be connected to the stapes base plate, and the second top plate can be rotated after being connected to the connecting seat to adjust the use angle; when the stapes is relatively complete, the stapes base plate can be placed under the clamping plate when the connecting arm is connected to the stapes, and the stapes is connected and clamped by the side walls below the two clamping seats; when the stapes head and the front and back arches disappear and only the stapes base plate remains, the clamping plate is placed under the stapes base plate, so that the clamping plate can support the stapes base plate from below, thereby preventing the clamping assembly from separating from the stapes, and effectively coping with different stapes conditions through two installation methods.

[0014] The technical solution further defined in the present invention is:

[0015] The height adjustment device includes an adjusting column and a positioning sleeve, two arc-shaped connecting arms are symmetrically fixed below the adjusting column, the top of the adjusting column is fixedly connected to the positioning sleeve and the adjusting column and the positioning sleeve are connected to each other, the adjusting column is threadedly connected to the external thread on the outside of the vertical screw through a preset internal thread on the inner surface, the vertical screw passes through the positioning sleeve and is arranged in the adjusting column, and the vertical screw can be rotated in the adjusting column through the thread, thereby changing the position of the vertical screw in the adjusting column.

[0016] A threaded hole is reserved on the side wall of the positioning sleeve for threaded connection with the threaded rod. The threaded rod rotates and retracts in the threaded hole and fits and is limited on the side wall of the vertical screw. When the vertical screw is rotated to a suitable position in the adjusting column, the threaded rod is rotated to make it rotate in the threaded hole and gradually approach the vertical screw, thereby limiting the position of the vertical screw in the positioning sleeve. The threaded lifting structure ensures that the vertical screw will not slide out, and the positioning sleeve can further fix the vertical screw, thereby effectively ensuring that the height position of the first top plate will not change in the long term.

[0017] The two connecting plates are fixed on opposite sides of the two connecting arms, and the two connecting plates are staggered front and back on the two connecting arms. The two connecting plates are fixed with latches at equal intervals on the side surfaces away from one end of the connecting arm, and the latches on the two connecting plates are meshed and connected. An arc-shaped auxiliary block for connecting surgical instruments is fixed above the connecting plates. During surgery, after the clamping seat is connected to the stapes, the doctor can use surgical instruments or other objects to clamp on the two auxiliary blocks, pull the two connecting plates together, so that the latches at corresponding positions on the two connecting plates are meshed, and the two meshed connecting plates can fix the two connecting arms, thereby ensuring that the two clamping seats are stably connected to the stapes, and avoiding the situation where the clamping seat is not fixed and thus detached from the stapes.

[0018] A mounting groove is provided inside the connecting seat, and the vertical plate is inserted and placed in the mounting groove. A vertical plate is fixed at the middle position on the back of the second top plate. A circular hole connected to the positioning screw is reserved on the vertical plate. The vertical plate passes through the positioning screw and swings in the mounting groove. When the second top plate is placed into the connecting seat through the mounting groove, the positioning screw is also connected to the vertical plate and fixed to the connecting seat. The vertical plate changes the use angle of the second top plate by rotating in the mounting groove.

[0019] The positioning screw is divided into a rod body and a rod head. The rod body is threadedly connected to the positioning screw hole provided on the side wall of the connecting seat, and the rod head is engaged with the connecting hole provided on the connecting seat. First, the vertical plate is placed into the connecting seat so that the round hole corresponds to the positioning screw hole, and then the positioning screw is used to pass through the connecting seat and the vertical plate. The rod body of the positioning screw is fixed to the connecting seat through the positioning screw hole, and the rod head is also embedded in the connecting hole to prevent the positioning screw from protruding too much.

[0020] Two guide sliders are provided on the back of the second top plate, and two inclined surfaces are provided at both ends of the top of the connecting seat for the two guide sliders to slide respectively, one of which has an angle of 5° and the other has an angle of 10°. Limiting grooves connected to the inclined surfaces are provided at both ends of the connecting seat. When the vertical plate is rotated 5° to the left, the guide slider on the left side under the second top plate follows the inclined surface at the corresponding position into the limiting groove on the left side of the connecting seat. When the vertical plate is rotated 10° to the right, the guide slider on the right side under the second top plate follows the inclined surface at the corresponding position into the limiting groove on the right side of the connecting seat. At this time, the guide slider on the left side is disengaged from the limiting groove at the corresponding position. The connection between the guide slider and the limiting groove is an interference connection. This connection structure can ensure the stability of the angle adjusted after the second top plate is rotated, and will not easily disengage. In addition, the accuracy of the adjustment degree can also be ensured through the limiting groove at the corresponding position.

[0021] The beneficial effects of the present invention are as follows: a medical full-type artificial auditory ossicle is designed, which preserves the original structure of the stapes while also having the function of adjusting the height and angle, and is both practical and flexible. Different from the existing structures in which many auditory ossicles need to be cut, the auditory ossicle designed in this solution is more convenient to use. A clamping plate is provided at the middle position of the clamping seat. The position of the clamping plate enables the clamping seat to be installed at the stapes according to the conditions of the stapes of different patients. When the stapes is relatively complete, the stapes base plate can be placed below the clamping plate when the connecting arm is connected to the stapes, and is connected and clamped to the stapes through the side walls below the two clamping seats. When the stapes head and When the front and rear arches disappear and only the stapes base plate remains, the clamping plate is placed under the stapes base plate, so that the clamping plate can support the stapes base plate from below, thereby preventing the clamping assembly from being separated from the stapes. The two installation methods are effectively used to cope with different stapes conditions, which increases the practicality and flexibility of the device. In addition, the fixation of the clamping seat and the stapes does not require the use of objects such as gelatin sponge for filling as in the traditional way. The two connecting arms can be fixed by the engagement of two corresponding connecting plates, so that the two connecting arms are clamped on the stapes. The operation is simple and the stability is strong, which effectively avoids the situation where the device and the stapes are separated due to activities or long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the three-dimensional structure of Example 1 of the present invention;

[0023] Figure 2 It is a schematic diagram of a three-dimensional partial structure of the height adjustment device of the present invention;

[0024] Figure 3 Schematic diagram of the three-dimensional structure of embodiment 2 of the present invention;

[0025] Figure 4 Schematic diagram of the three-dimensional structure of the second top plate of the present invention;

[0026] Figure 5 It is a schematic diagram of the side three-dimensional structure of the connecting socket of the present invention. DETAILED DESCRIPTION

[0027] The following is a detailed description of the technical solutions in the embodiments of the present invention, with reference to the accompanying drawings. It is apparent that the described embodiments are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention in their respective contexts.

[0030] The specific embodiments of the present invention are described in further detail below:

[0031] Example 1

[0032] Figure 1-Figure 2: This example provides a medical full-type artificial ossicle, comprising a first top plate 1 fitted on the tympanic membrane, a height-adjusting device 2, a clamping assembly 3 for grasping the stapes and a vertical screw 4, the first top plate 1 is fixed to the top of the vertical screw 4, the vertical screw 4 is arranged in the height-adjusting device 2, and the lower part of the height-adjusting device 2 is connected to the clamping assembly 3; the clamping assembly 3 comprises two arc-shaped connecting arms 301 and two clamping seats 302, the two arc-shaped connecting arms 301 are symmetrically fixed below the height-adjusting device 2 and are located on both sides of the stapes base plate, the free ends of the connecting arms 301 are fixed with the clamping seats 302 connected to the stapes base plate, a clamping plate 303 is horizontally provided in the middle position of one side of the clamping seat 302, and the clamping plate 303 is fitted and connected to the stapes base plate; first, the vertical screw 4 is fixed to the top of the vertical screw 4, the vertical screw 4 is arranged in the height-adjusting device 2, and the lower part of the height-adjusting device 2 is connected to the clamping assembly 3; the clamping assembly 3 comprises two arc-shaped connecting arms 301 and two clamping seats 302, the two arc-shaped connecting arms 301 are symmetrically fixed below the height-adjusting device 2 and are located on both sides of the stapes base plate, the free ends of the connecting arms 301 are fixed with the clamping seats 302 connected to the stapes base plate The position in the height adjustment device 2 is adjusted, thereby changing the position between the first top plate 1 and the clamping assembly 3 fixed on the vertical screw 4, so that the first top plate 1 can be fitted with the tympanic membrane during surgery, and the clamping assembly 3 can be connected to the stapes base plate; when the stapes is relatively complete, the stapes base plate can be placed below the clamping plate 303 when the connecting arm 301 is connected to the stapes, and the side walls below the two clamping seats 302 are connected and clamped with the stapes; when the stapes head and the front and back arches disappear, and only the stapes base plate remains, the clamping plate 303 is placed below the stapes base plate, so that the clamping plate 303 can support the stapes base plate from below, thereby preventing the clamping assembly 3 from disengaging from the stapes, and effectively coping with different stapes situations by two installation methods;

[0033] The height adjustment device 2 includes an adjustment column 201 and a positioning sleeve 202. Two arc-shaped connecting arms 301 are symmetrically fixed below the adjustment column 201. The top of the adjustment column 201 is fixedly connected to the positioning sleeve 202 and the adjustment column 201 and the positioning sleeve 202 are connected to each other. The adjustment column 201 is threadedly connected to the external thread on the outside of the vertical screw 4 through the internal thread preset on the inner surface. The vertical screw 4 passes through the positioning sleeve 202 and is set in the adjustment column 201. The vertical screw 4 can be rotated in the adjustment column 201 through the thread, thereby changing the position of the vertical screw 4 in the adjustment column 201; the positioning sleeve 202 A threaded hole 203 is reserved on the side wall for threaded connection with the threaded rod 204. The threaded rod 204 rotates and retracts in the threaded hole 203 and fits and is limited on the side wall of the vertical screw 4. When the vertical screw 4 is rotated to a suitable position in the adjustment column 201, the threaded rod 204 is rotated again to make it rotate in the threaded hole 203 and gradually approach the vertical screw 4, thereby limiting the position of the vertical screw 4 in the positioning sleeve 202. The threaded lifting structure ensures that the vertical screw 4 will not slide out, and the positioning sleeve 202 can further fix the vertical screw 4, thereby effectively ensuring that the height position of the first top plate 1 will not change in the long term.

[0034] The two engaging connecting plates 304 can then fix the two connecting arms 301, thereby ensuring that the two clamping seats 302 are stably connected to the stapes, and avoiding the situation that the clamping seat 302 is not fixed and thus detached from the stapes.

[0035] The usage process of this embodiment is: first adjust the position of the vertical screw in the adjustment column according to the position of the stapes and tympanic membrane in the patient's ear, change the height between the first top plate and the clamping assembly, so that the first top plate can fit with the tympanic membrane during the operation, and the position of the clamping assembly can correspond to the stapes, then select the appropriate clamping plate connection method according to the stapes in different situations, and fix the position of the clamping seat and the clamping plate by engaging the connecting plate.

[0036] Example 2

[0037] Figure 2-Figure 5: This example provides a medical full-type artificial ossicle, comprising a second top plate 6 fitted on the tympanic membrane, a connecting seat 5 for facilitating the angle adjustment of the second top plate 6, a height adjustment device 2, a clamping assembly 3 and a vertical screw 4 for grasping the stapes, the second top plate 6 being installed on the connecting seat 5, the connecting seat 5 being fixed above the vertical screw 4, the vertical screw 4 being arranged in the height adjustment device 2, and the lower part of the height adjustment device 2 being connected to the clamping assembly 3; the clamping assembly 3 comprises two arc-shaped connecting arms 301 and two clamping seats 302, the two arc-shaped connecting arms 301 being symmetrically fixed below the height adjustment device 2 and being located on both sides of the stapes base plate, the free end of the connecting arm 301 being fixed with a clamping seat 302 connected to the stapes base plate, a clamping plate 303 being laterally provided at the middle position of one side of the clamping seat 302, and the clamping plate 303 being fitted and connected to the stapes base plate; first, the vertical screw 4 is adjusted The position in the height adjustment device 2 is adjusted, thereby changing the position between the second top plate 6 and the clamping assembly 3 fixed on the vertical screw 4, so that the second top plate 6 can fit mutually with the tympanic membrane during surgery, and the clamping assembly 3 can be connected to the stapes base plate, and the second top plate 6 can be rotated after being connected with the connecting seat 5, thereby adjusting the use angle according to usage; when the stapes is relatively complete, the stapes base plate can be placed below the clamping plate 303 when the connecting arm 301 is connected with the stapes, and the side walls below the two clamping seats 302 are connected and clamped with the stapes. When only the stapes base plate is left, the clamping plate 303 is placed below the stapes base plate so that the clamping plate 303 can support the stapes base plate from below, thereby avoiding that the clamping assembly 3 is disengaged from the stapes, and effectively coping with different stapes situations by two installation methods;

[0038] The height adjustment device 2 includes an adjustment column 201 and a positioning sleeve 202. Two arc-shaped connecting arms 301 are symmetrically fixed below the adjustment column 201. The top of the adjustment column 201 is fixedly connected to the positioning sleeve 202 and the adjustment column 201 and the positioning sleeve 202 are connected to each other. The adjustment column 201 is threadedly connected to the external thread on the outside of the vertical screw 4 through the internal thread preset on the inner surface. The vertical screw 4 passes through the positioning sleeve 202 and is set in the adjustment column 201. The vertical screw 4 can be rotated in the adjustment column 201 through the thread, thereby changing the position of the vertical screw 4 in the adjustment column 201; the positioning sleeve 202 A threaded hole 203 is reserved on the side wall for threaded connection with the threaded rod 204. The threaded rod 204 rotates and retracts in the threaded hole 203 and fits and is limited on the side wall of the vertical screw 4. When the vertical screw 4 is rotated to a suitable position in the adjustment column 201, the threaded rod 204 is rotated again to make it rotate in the threaded hole 203 and gradually approach the vertical screw 4, thereby limiting the position of the vertical screw 4 in the positioning sleeve 202. The threaded lifting structure ensures that the vertical screw 4 will not slide out, and the positioning sleeve 202 can further fix the vertical screw 4, thereby effectively ensuring that the height position of the first top plate 1 will not change in the long term.

[0039] The two connecting plates 304 are fixed on the opposite sides of the two connecting arms 301, and the two connecting plates 304 are staggered front and back on the two connecting arms 301. The two connecting plates 304 are evenly spaced and fixed with teeth on the sides away from one end of the connecting arm 301. The teeth on the two connecting plates 304 are meshed and connected. An arc-shaped auxiliary block 305 for connecting surgical instruments is fixed above the connecting plates 304. During surgery, after the clamping seat 302 is connected to the stapes, the doctor can use objects such as surgical instruments to clamp on the two auxiliary blocks 305 and pull the two connecting plates 304 close to each other so that the teeth at corresponding positions on the two connecting plates 304 are meshed. The two meshed connecting plates 304 can fix the two connecting arms 301, thereby ensuring that the two clamping seats 302 are stably connected to the stapes, and avoiding the situation where the clamping seat 302 is not fixed and thus separates from the stapes.

[0040] The interior of the connecting seat 5 is provided with a mounting groove 503, and the vertical plate 602 is inserted and placed in the mounting groove 503. The vertical plate 602 is fixed to the middle position of the back of the second top plate 6; a circular hole 603 connected to the positioning screw 7 is reserved on the vertical plate 602, and the vertical plate 602 passes through the positioning screw 7 and swings in the mounting groove 503. When the second top plate 6 is placed into the connecting seat 5 through the mounting groove 503, the positioning screw 7 is also connected to the vertical plate 602 and fixed to the connecting seat 5. The vertical plate 602 changes the position of the second top plate 6 by rotating in the mounting groove 503. Angle of use; the positioning screw 7 is divided into a rod body and a rod head, the rod body is threadedly connected to the positioning screw hole 504 provided on the side wall of the connecting seat 5, and the rod head is engaged with the connecting hole 505 provided on the connecting seat 5. First, put the vertical plate 602 into the connecting seat 5 so that the round hole 603 corresponds to the positioning screw hole 504, and then use the positioning screw 7 to pass through the connecting seat 5 and the vertical plate 602. The rod body of the positioning screw 7 is threadedly fixed to the connecting seat 5 through the positioning screw hole 504, and the rod head is also embedded in the connecting hole 505 to prevent the positioning screw 7 from protruding too much; second Two guide sliders 601 are provided on the back of the top plate 6. Two inclined surfaces 502 are provided at both ends of the top of the connecting seat 5 for the two guide sliders 601 to slide. The angle of one inclined surface 502 is 5°, and the angle of the other inclined surface 502 is 10°. A limiting groove 501 is provided at both ends of the connecting seat 5, which is interconnected with the inclined surface 502. When the vertical plate 602 rotates 5° to the left, the guide slider 601 on the left side below the second top plate 6 enters the limiting groove 501 on the left side of the connecting seat 5 along the inclined surface 502 at the corresponding position. When the second top plate 6 is rotated 10° to the right, the guide slider 601 on the right side below the second top plate 6 follows the inclined surface 502 at the corresponding position and enters the limiting groove 501 on the right side of the connecting seat 5. At this time, the guide slider 601 on the left side is disengaged from the limiting groove 501 at the corresponding position. The connection between the guide slider 601 and the limiting groove 501 is an interference fit connection. This connection structure can ensure the stability of the angle adjusted after the second top plate 6 is rotated and will not easily disengage. In addition, the accuracy of the adjustment degree can be ensured through the limiting groove 501 at the corresponding position.

[0041] The usage process of this embodiment is as follows: first, adjust the position of the vertical screw in the adjustment column according to the position of the stapes and tympanic membrane in the patient's ear, and change the height between the second top plate and the clamping assembly so that the second top plate can fit the tympanic membrane during the operation. Generally speaking, there will be a demand for the top plate angle during the ossicular implantation operation. The top plate angle requirements are 5°, 0° and 10°. If there is a need for angle adjustment, the second top plate and the connecting seat can be installed first, and then the rotation angle of the vertical plate on the positioning screw can be changed by pulling the guide slider during the operation. The interference connection structure of the guide slider and the limit groove can ensure the stability of the angle adjusted after the second top plate is rotated, and the position of the clamping assembly needs to be adjusted to correspond to the stapes through the vertical screw, and then the appropriate clamping plate connection method is selected according to the stapes in different situations, and the position of the clamping seat and the clamping plate is fixed by the engagement of the connecting plate.

[0042] The above embodiments are only for illustrating the technical idea of the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A medical full-type artificial auditory ossicle, characterized by: The invention comprises a first top plate (1) attached to the eardrum, a height adjustment device (2), a clamping assembly (3) for grasping the stapes, and a vertical screw (4), wherein the first top plate (1) is fixed to the top of the vertical screw (4), the vertical screw (4) is arranged in the height adjustment device (2), and the lower part of the height adjustment device (2) is connected to the clamping assembly (3); The clamping assembly (3) comprises two arc-shaped connecting arms (301) and two clamping seats (302), wherein the two arc-shaped connecting arms (301) are symmetrically fixed below the height adjustment device (2) and are located on both sides of the stapes base plate, and the free ends of the connecting arms (301) are fixed with clamping seats (302) connected to the stapes base plate, and a clamping plate (303) is laterally provided at the middle position of one side of the clamping seat (302), and the clamping plate (303) is closely connected to the stapes base plate; The height adjustment device (2) comprises an adjustment column (201) and a positioning sleeve (202), two arc-shaped connecting arms (301) are symmetrically fixed below the adjustment column (201), the upper portion of the adjustment column (201) is fixedly connected to the positioning sleeve (202), and the adjustment column (201) and the positioning sleeve (202) are interconnected, the adjustment column (201) is threadedly connected to the external thread of the vertical screw (4) via an internal thread preset on the inner surface, and the vertical screw (4) passes through the positioning sleeve (202) and is arranged in the adjustment column (201); A transverse connecting plate (304) is fixed on opposite sides of the two connecting arms (301), and the two connecting plates (304) are arranged in a front-to-back staggered manner on the two connecting arms (301). Snap teeth are fixed at equal intervals on the side surfaces of the two connecting plates (304) away from one end of the connecting arm (301), and the snap teeth on the two connecting plates (304) are meshed and connected. An arc-shaped auxiliary block (305) for connecting surgical instruments is fixed above the connecting plates (304).

2. The medical full-type artificial auditory ossicle according to claim 1, characterized in that: A threaded hole (203) threadedly connected to the threaded rod (204) is reserved on the side wall of the positioning sleeve (202), and the threaded rod (204) rotates and retracts in the threaded hole (203) and fits and is confined on the side wall of the vertical screw rod (4).

3. A medical full-type artificial auditory ossicle, characterized by: The invention comprises a second top plate (6) attached to the eardrum, a connecting seat (5) for facilitating the angle adjustment of the second top plate (6), a height adjustment device (2), a clamping assembly (3) for grasping the stapes, and a vertical screw (4), wherein the second top plate (6) is mounted on the connecting seat (5), the connecting seat (5) is fixed above the vertical screw (4), the vertical screw (4) is arranged in the height adjustment device (2), and the lower part of the height adjustment device (2) is connected to the clamping assembly (3); The clamping assembly (3) comprises two arc-shaped connecting arms (301) and two clamping seats (302), wherein the two arc-shaped connecting arms (301) are symmetrically fixed below the height adjustment device (2) and are located on both sides of the stapes base plate, and the free ends of the connecting arms (301) are fixed with clamping seats (302) connected to the stapes base plate, and a clamping plate (303) is laterally provided at the middle position of one side of the clamping seat (302), and the clamping plate (303) is closely connected to the stapes base plate; The height adjustment device (2) comprises an adjustment column (201) and a positioning sleeve (202), two arc-shaped connecting arms (301) are symmetrically fixed below the adjustment column (201), the upper portion of the adjustment column (201) is fixedly connected to the positioning sleeve (202), and the adjustment column (201) and the positioning sleeve (202) are interconnected, the adjustment column (201) is threadedly connected to the external thread of the vertical screw (4) via an internal thread preset on the inner surface, and the vertical screw (4) passes through the positioning sleeve (202) and is arranged in the adjustment column (201); A transverse connecting plate (304) is fixed on opposite sides of the two connecting arms (301), and the two connecting plates (304) are arranged in a front-to-back staggered manner on the two connecting arms (301). Clamping teeth are fixed at equal intervals on the side surfaces of the two connecting plates (304) away from one end of the connecting arm (301), and the clamping teeth on the two connecting plates (304) are meshed and connected. An arc-shaped auxiliary block (305) for connecting surgical instruments is fixed above the connecting plates (304); A mounting groove (503) is provided inside the connecting seat (5), and a vertical plate (602) is fixed at the middle position of the back of the second top plate (6), and the vertical plate (602) is inserted into the mounting groove (503); a circular hole (603) is reserved on the vertical plate (602) for connecting with the positioning screw (7), and the vertical plate (602) passes through the positioning screw (7) and swings in the mounting groove (503); Two guide slide blocks (601) are provided on the back of the second top plate (6), and two inclined surfaces (502) for the two guide slide blocks (601) to slide are provided at both ends of the top of the connecting seat (5), wherein the angle of one inclined surface (502) is 5°, and the angle of the other inclined surface (502) is 10°, and limiting grooves (501) are provided at both ends of the connecting seat (5) and are communicated with the inclined surfaces (502).

4. The medical full-type artificial auditory ossicle according to claim 3, characterized in that: A threaded hole (203) threadedly connected to the threaded rod (204) is reserved on the side wall of the positioning sleeve (202), and the threaded rod (204) rotates and retracts in the threaded hole (203) and fits and is confined on the side wall of the vertical screw rod (4).

5. The medical full-type artificial auditory ossicle according to claim 3, characterized in that: The positioning screw (7) is divided into a rod body and a rod head. The rod body is threadedly connected to a positioning screw hole (504) provided on the side wall of the connecting seat (5), and the rod head is engaged and connected with a connecting hole (505) provided on the connecting seat (5).

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