Support for thyroid surgery

Abstract

The invention relates to the technical field of medical supplies, in particular to a support for thyroid surgery, which comprises a base, a lifting component and a length adjusting component, the support for thyroid surgery is lifted by a single hand: through the cooperation of a worm, a worm gear, a first handle, a first screw and a solenoid, an operator only needs to rotate the first handle, and the length adjusting component can be adjusted; therefore, the height of the lifting plate can be adjusted. Compared with a traditional mode that two hands are needed for synchronous adjustment, the design is more convenient and faster, a doctor can adjust the height of the support more flexibly through one-hand operation, and the operation efficiency is improved; length adjustment is achieved through one-hand operation, and through cooperation of a second screw rod, a second handle, a sliding block and a movable plate, a doctor only needs to rotate the second handle, and then the length of the support can be adjusted. Compared with a traditional two-hand synchronous adjustment mode, the single-hand operation mode is more convenient and faster, operation complexity is reduced, and operation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical supplies, in particular to a stent for thyroid surgery. Background Art

[0002] The thyroid gland is a very important gland in vertebrates and is an endocrine organ. In mammals, it is located below the thyroid cartilage in the neck and on both sides of the trachea;

[0003] A stent is needed during thyroid surgery. The application number is CN202111520753.1, which provides a thyroid surgery stent and relates to the field of medical devices. The thyroid surgery stent includes a stabilizing mechanism, a connecting plate is provided on the top of the stabilizing mechanism, a height adjustment mechanism is provided between the stabilizing mechanism and the connecting plate, a first side panel is fixedly connected to the upper surface of the connecting plate, and the side wall of the first side panel is connected to the second side panel through a transverse adjustment mechanism. A supporting mechanism is provided between the first side panel and the second side panel, and an airbag is provided on the upper surface of the supporting mechanism. Through the stabilizing mechanism, the height adjustment mechanism, and the transverse adjustment mechanism, the device can be adjusted according to the specific situation of the user's neck during use, increasing the stability of the user's neck during surgery. At the same time, the height of the device can also be adjusted, and the angle of the user's neck can be changed by changing the overall height of the device, which is convenient for the device to be used in thyroid surgery.

[0004] During actual use, it was found that the above structure has the disadvantage of being inconvenient to adjust. The height adjustment requires two hands to adjust simultaneously, and the length adjustment also requires two hands to adjust simultaneously, which is inconvenient to operate. Moreover, with the adjustment of the first curved plate and the second curved plate, the airbag is prone to unstable fixation, and it is inconvenient to clean the airbag. Summary of the invention

[0005] In view of this, the present invention proposes a stent for thyroid surgery, aiming to solve the deficiencies of the prior art.

[0006] The present invention provides a support for thyroid surgery, comprising a base, a lifting assembly and a length adjustment assembly, wherein the lifting assembly comprises a worm, a worm wheel, a first handle, a first screw, a screw tube, a lifting plate, a cover body, a guide rod and a guide tube, wherein a cover body with a lower opening movable cavity is arranged on the base, the worm wheel and the worm are arranged in the cover body, the worm wheel and the worm are meshed, a first screw is arranged at the center above the worm wheel, which passes through the cover body, a screw tube threadedly connected with the first screw is arranged below the lifting plate, the guide rod is also arranged at the four corners below the lifting plate, the base is also provided with a guide tube plugged with the guide rod, and the output end of the first handle passes through the cover body and is connected with the worm;

[0007] The length adjustment assembly includes a fixed plate, a movable plate, a slider, a second screw, a second handle, a fixed arc plate and a movable arc plate. The fixed plate is arranged at one end above the lifting plate, the fixed arc plate is arranged above the fixed plate, a sliding hole matched with the slider is arranged at the other end above the lifting plate, a second screw penetrating the slider is also arranged in the sliding hole, the second screw is threadedly connected to the slider, the second handle penetrates the lifting plate and is connected to the second screw, the movable plate is also arranged on the slider, a storage groove is arranged on the fixed arc plate close to the slider, the movable arc plate is slidably connected to the storage groove, and the movable arc plate is connected to the movable plate at the bottom.

[0008] In order to ensure the stability of the movement of the slider, the present invention has the following improvements: the slider is in an "I" shape, and limit plates matching the notches on the left and right sides of the slider are provided on the left and right sides of the sliding hole.

[0009] In order to ensure the stability of the movable plate support, the present invention has the following improvements: the width of the left and right sides of the movable plate is greater than the width of the left and right sides of the sliding block, and the bottom wall of the movable plate is in contact with the top wall of the lifting plate.

[0010] In order to ensure the flushness of the top walls of the fixed arc plate and the movable arc plate, the present invention has an improvement in that a filling component is also provided on the length adjustment component, and the filling component includes a first Velcro, a second Velcro and a filling pad, the first Velcro is symmetrically provided on the left and right sides above the fixed arc plate and the movable arc plate, and a second Velcro bonded to the first Velcro is provided below the filling pad.

[0011] In order to ensure that the filling pad is stably fitted with the fixed arc plate and the movable arc plate, the present invention is improved in that a stepped groove adapted to the fixed arc plate is provided below the filling pad.

[0012] In order to conveniently ensure that the spiral tube is threadedly connected to the first screw rod, the present invention is improved in that the bottom wall of the guide rod is lower than the bottom wall of the spiral tube.

[0013] In order to facilitate the stable insertion of the guide rod and the guide tube, the present invention is improved in that a hemispherical body is further arranged below the guide rod.

[0014] Preferably, the first handle is provided with a first friction pattern.

[0015] Preferably, the second handle is provided with a second friction pattern.

[0016] In order to ensure the strength of the fixed arc plate, the present invention is improved in that the fixed plate is further provided with reinforcing ribs for supporting the fixed arc plate.

[0017] Compared with the prior art, the beneficial effect of the present invention is that the lifting assembly can achieve smooth and precise height adjustment through the meshing design of the worm and the worm wheel. This feature is crucial during the operation because it ensures that medical staff can quickly adjust the height of the bracket according to specific surgical needs to obtain the best operating field of view. This adjustability not only enhances the doctor's operating flexibility, but also reduces the discomfort during the operation and improves the safety of the patient. Secondly, the guide rods at the four corners below the lifting plate are combined with the guide tubes on the base to further enhance the stability of the bracket. This design enables the lifting plate to maintain a good horizontal state during the adjustment process to prevent operational errors caused by shaking. Stability is particularly important for thyroid surgery because the anatomical structure of this area is complex and any slight deviation may affect the surgical effect. In addition, the lower opening active cavity design of the cover body allows medical staff to observe and operate conveniently while protecting the surgical area and preventing external interference. In terms of the length adjustment component, the bracket achieves flexible length adjustment through the structural design of the fixed plate and the movable plate. This feature allows the bracket to adapt to the individual differences of different patients and provide more humane services. The sliding connection design of the fixed arc plate and the movable arc plate allows the bracket to be flexibly used on patients of different body shapes and positions, ensuring the best support and stability during surgery. Finally, the reasonable layout of the overall design not only improves the efficiency of equipment use, but also facilitates medical staff to make quick adjustments during surgery, reducing surgical risks. With this bracket, medical staff can focus more on the operation itself without having to worry about the stability and adjustment of the equipment frequently, thereby improving the success rate of the operation and the patient's postoperative recovery experience. Therefore, this bracket is not only an innovation in surgical tools, but also provides strong support for improving the safety and effectiveness of thyroid surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0020] Figure 2 It is a top view schematic diagram of the structure of the present invention;

[0021] Figure 3 It is a schematic side view of the structure of the present invention;

[0022] Figure 4 It is a bottom view schematic diagram of the structure of the present invention without the base and the guide tube;

[0023] Figure 5 The structure of the present invention Figure 4 A partial enlarged schematic diagram;

[0024] Figure 6 It is a partial schematic diagram of the structure of the present invention;

[0025] Figure 7 It is a partial explosion schematic diagram of the structure of the present invention.

[0026] In the figure: 1. base; 2. worm; 3. worm wheel; 4. first handle; 5. first screw; 6. screw tube; 7. lifting plate; 8. cover; 9. guide rod; 10. guide tube; 11. fixed plate; 12. movable plate; 13. slider; 14. second screw; 15. second handle; 16. fixed arc plate; 17. movable arc plate; 18. limit plate; 19. first Velcro; 20. second Velcro; 21. filling pad; 22. hemisphere; 23. first friction pattern; 24. second friction pattern; 25. reinforcing rib. DETAILED DESCRIPTION

[0027] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] See also Figure 1-Figure 7 In some embodiments of the present application, this embodiment provides a support for thyroid surgery, including a base 1, a lifting assembly and a length adjustment assembly, the lifting assembly including a worm 2, a worm wheel 3, a first handle 4, a first screw 5, a screw tube 6, a lifting plate 7, a cover body 8, a guide rod 9 and a guide tube 10, the base 1 is provided with a cover body 8 with a lower opening movable cavity, the cover body 8 is provided with the worm wheel 3 and the worm 2, the worm wheel 3 and the worm 2 are meshed, the first screw 5 is provided at the center above the worm wheel 3 and passes through the cover body 8, the screw tube 6 threadedly connected to the first screw 5 is provided below the lifting plate 7, the guide rod 9 is also provided at the four corners below the lifting plate 7, the base 1 is also provided with a guide tube 10 plugged into the guide rod 9, the output end of the first handle 4 passes through the cover body 8 and is connected to the worm 2.

[0029] It can be seen that the worm 2 and the worm wheel 3 in the lifting assembly work by meshing, and the rotation of the worm drives the rotation of the worm wheel, thereby realizing the precise movement of the lifting plate 7. The rotation of the first handle 4 is connected to the worm wheel 3 through the worm 2, forming an effective force transmission mechanism, so that the operator can easily adjust the height of the lifting plate to meet different surgical needs. At the same time, the threaded connection between the lifting plate 7 and the first screw 5 and the screw tube 6 below further ensures the stability of the lifting plate during the lifting process. In addition, the design of the guide rod 9 and the guide tube 10 increases the guiding property of the lifting system, which helps to keep the lifting plate level during the lifting process and avoid operational errors caused by shaking. This structural design enables the bracket to provide stable and safe support during surgery, effectively improving the accuracy and safety of the surgery.

[0030] It is understandable that the meshing working principle of the worm 2 and the worm wheel 3 is the core of this device, and the rotation of the worm realizes the height adjustment of the lifting plate 7 through the rotation of the worm wheel. Specifically, when the operator rotates the first handle 4, the worm 2 will rotate synchronously, and transmit torque through meshing with the worm wheel 3, so that the worm wheel rotates accordingly. Since the center position of the worm wheel is connected to the first screw 5, this design ensures that the lifting plate 7 can move accurately in the vertical direction. In this way, medical staff can quickly and conveniently adjust the height of the bracket according to the needs of the operation to ensure the best surgical field of view and operating space. In addition, the threaded connection design between the lifting plate 7 and the first screw 5 and the screw tube 6 further enhances the stability of the system. During the lifting process, the lifting plate 7 is evenly stressed, avoiding the tilting phenomenon caused by gravity. This stability is particularly important for thyroid surgery, because the anatomical structure of this area is complex, and any slight error may affect the surgical effect. The combined design of the guide rod 9 and the guide tube 10 provides higher guidance, making the movement during the lifting process smoother and reducing the operational risks caused by shaking or offset. The existence of the guide rod ensures that the lifting plate always maintains vertical movement during the lifting process, thereby ensuring that medical personnel can accurately control the height of the bracket during the operation.

[0031] Specifically, the length adjustment assembly includes a fixed plate 11, a movable plate 12, a slider 13, a second screw 14, a second handle 15, a fixed arc plate 16 and a movable arc plate 17. The fixed plate 11 is provided at one end above the lifting plate 7, and the fixed arc plate 16 is provided above the fixed plate 11. A sliding hole adapted to the slider 13 is provided at the other end above the lifting plate 7. A second screw 14 penetrating the slider 13 is also provided in the sliding hole. The second screw 14 is threadedly connected to the slider 13. The second handle 15 penetrates the lifting plate 7 and is connected to the second screw 14. The movable plate 12 is also provided on the slider 13. A storage groove is provided on the fixed arc plate 16 close to the slider 13. The movable arc plate 17 is slidably connected to the storage groove, and the movable arc plate 17 is connected to the movable plate 12 at the bottom.

[0032] It can be seen that the fixed plate 11 is connected to the lifting plate 7, providing a stable foundation. The fixed arc plate 16 is combined with the fixed plate 11 to form a movable structure. The slider 13 in the sliding hole is threadedly connected to the second screw 14, so that the slider can move along the sliding hole when the screw rotates, thereby adjusting the length. The second handle 15 passes through the lifting plate 7 and is connected to the second screw 14. The operator can easily adjust the position of the slider by rotating the second handle, thereby changing the distance between the moving plate 12 and the fixed plate 11. The moving plate 12 on the slider 13 cooperates with the receiving groove of the fixed arc plate 16, and the moving arc plate 17 can slide freely in the receiving groove through the sliding connection. This design allows the length of the bracket to be quickly adjusted according to the individual differences of the patient and the surgical needs during the operation. Through this combined structure, the bracket can provide more flexible adaptability, ensuring that medical staff can achieve fast and accurate length adjustment during operation, and improving the comfort and safety during the operation. Therefore, the design of this component not only enhances the adjustability of the bracket, but also provides more flexibility and convenience for surgery.

[0033] It is understandable that the fixed plate 11, as a part of the bracket, provides the necessary support force for the entire system by being firmly connected to the lifting plate 7. Above the fixed plate 11, the design of the fixed arc plate 16 not only increases the stability of the structure, but also provides the necessary guidance for the movement of the slider 13, ensuring the stability of the adjustment process. Secondly, the threaded connection between the sliding hole set in the slider 13 and the second screw 14 constitutes a flexible adjustment mechanism. When the operator rotates the second handle 15, the rotation of the second screw 14 directly drives the slider 13 to move along the sliding hole, thereby achieving precise adjustment of the length. The cleverness of this structural design is that the movement of the slider can be quickly reflected in the overall length of the bracket, so that medical staff can make quick adjustments according to the patient's specific conditions and surgical needs during the operation. This instant adjustment capability greatly improves the adaptability of the bracket, so that it can meet the individual differences of different patients. Finally, in the design of the movable plate 12, the sliding connection with the storage groove of the fixed arc plate 16 adds more flexibility to the adjustment process. The design of the movable curved plate 17 enables the surgical stent to slide smoothly during adjustment, reducing the resistance caused by friction, thereby making the length adjustment process smoother. The presence of the storage slot not only provides support for the movable curved plate, but also ensures that other structures will not be disturbed during the adjustment process, maintaining the overall stability. This modular design concept not only improves the user experience, but also facilitates the operation of medical staff during surgery and reduces the risks that may be caused by improper operation.

[0034] Specifically, the slider 13 is in the shape of an I-shaped letter "I", and the limit plates 18 on the left and right sides of the slide hole are matched with the notches on the left and right sides of the slider 13 to ensure the stability of the slider 13 during movement. The width of the left and right sides of the moving plate 12 is greater than the width of the left and right sides of the slider 13, and the bottom wall is in contact with the top wall of the lifting plate 7, which increases the support area of ​​the moving plate 12 and improves the stability of the moving arc plate 17.

[0035] Specifically, in order to ensure the flushness of the top wall of the fixed arc plate 16 and the movable arc plate 17 and improve the stability of the support of the patient's neck on the bracket, the first Velcro 19 is symmetrically arranged on the left and right sides above the fixed arc plate 16 and the movable arc plate 17. A second Velcro 20 bonded to the first Velcro 19 is arranged below the filling pad 21. Through the bonding of the Velcro, the filling pad 21 is fixed on the arc plate to ensure the flushness of the top wall. The stepped groove arranged below the filling pad 21 is adapted to the fixed arc plate 16, further ensuring the stable fit of the filling pad 21 with the fixed arc plate 16 and the movable arc plate 17, and preventing the filling pad 21 from shifting during the operation. It should be noted that the length of the filling pad 21 of the fixed arc plate 16 is fixed, and the filling pad 21 of the movable arc plate 17 is longer and close to the top of the human head. It can be cut during actual use. At the same time, since the cut part is close to the top of the human head, it is avoided that the uneven cut part contacts the human body.

[0036] Specifically, the bottom wall of the guide rod 9 is lower than the bottom wall of the screw tube 6, and a hemispherical body 22 is further provided below the guide rod 9. The bottom wall of the guide rod 9 is lower than the bottom wall of the screw tube 6, which ensures that the screw tube 6 and the first screw rod 5 always maintain a good threaded connection. The hemispherical body 22 below the guide rod 9 makes it smoother to insert the guide tube 10, reduces friction, and improves the stability and fluency of lifting.

[0037] Specifically, during actual use, the first handle 4 is provided with a first friction pattern 23 , and the second handle 15 is provided with a second friction pattern 24 , so as to prevent the operator from slipping when driving the first handle 4 and the second handle 15 .

[0038] In this embodiment, the fixing plate 11 is further provided with reinforcing ribs 25 for supporting the fixing arc-shaped plate 16 to ensure the strength of the fixing plate 11 .

[0039] During the actual use of the equipment, the cooperation between the worm wheel and the worm, the cooperation between the first screw 5 and the screw tube 6, and the cooperation between the second screw 14 and the slider 13 all have good self-locking properties, and the equipment will not be easily adjusted due to interference from external factors, thereby ensuring the stability of the equipment. Moreover, according to needs, the upper surface of the filling pad 21 can be made of waterproof material to ensure that the equipment is easy to clean and wash, and to avoid contact with the skeleton due to effusion.

[0040] In the above embodiments, a specific method for using a thyroid surgery support is that when performing thyroid surgery, the doctor needs to adjust the height of the support to achieve a suitable angle for the patient's neck to be tilted up. At this time, the doctor holds the first handle 4 and rotates the first handle 4 so that its output end drives the worm 2 in the cover body 8 to rotate. Since the worm 2 is meshed with the worm wheel 3, the rotation of the worm 2 will drive the worm wheel 3 to rotate, and the first screw 5 at the center above the worm wheel 3 rotates with the rotation of the worm wheel. The solenoid 6 below the lifting plate 7 is threadedly connected to the first screw 5. When the first screw 5 rotates, the solenoid 6 moves up and down along the screw according to the rotation direction of the screw. At the same time, the guide rods 9 at the four corners below the lifting plate 7 slide in the guide tubes 10 on the base 1 to ensure that the lifting plate 7 can only move in the vertical direction; secondly, according to the length of the neck of different patients, the doctor needs to adjust the length of the support. The doctor holds the second handle 15 and rotates the second handle 15 to drive the second screw 14 above the lifting plate 7 to rotate. The second screw 14 passes through the slider 13 and is threadedly connected to the slider 13. When the screw rotates, the slider 13 moves in the slide hole according to the rotation direction of the screw. The slider 13 is provided with a moving plate 12. The fixed arc plate 16 is provided with a receiving groove on one side close to the slider 13. The moving arc plate 17 is slidably connected to the receiving groove and is connected to the moving plate 12 at the bottom. When the slider 13 moves, the moving plate 12 is driven to move, and then the moving arc plate 17 is driven to slide in the receiving groove to adjust the length of the bracket.

[0041] In the above embodiments, the meshing design of the worm 2 and the worm wheel 3 can achieve smooth and accurate height adjustment. This feature is crucial during surgery because it ensures that medical staff can quickly adjust the height of the bracket according to specific surgical needs to obtain the best operating field of view. This adjustability not only enhances the doctor's operational flexibility, but also reduces discomfort during surgery and improves the safety of patients. Secondly, the guide rods 9 at the four corners below the lifting plate 7 are combined with the guide tubes 10 on the base 1 to further enhance the stability of the bracket. This design enables the lifting plate 7 to maintain a good horizontal state during the adjustment process to prevent operational errors caused by shaking. Stability is particularly important for thyroid surgery because the anatomical structure of this area is complex and any slight deviation may affect the surgical effect. In addition, the lower opening active cavity design of the cover body allows medical staff to observe and operate conveniently while protecting the surgical area and preventing external interference. In terms of the length adjustment component, the bracket achieves flexible length adjustment through the structural design of the fixed plate 11 and the movable plate 12. This feature allows the bracket to adapt to the individual differences of different patients and provide more humane services. The sliding connection design of the fixed arc plate 16 and the movable arc plate 17 allows the bracket to be flexibly used on patients of different body shapes and positions, ensuring the best support and stability during the operation. Finally, the reasonable layout of the overall design not only improves the efficiency of the use of the equipment, but also facilitates medical staff to make quick adjustments during the operation, reducing the risk of surgery. Using this bracket, medical staff can focus more on the operation itself without having to worry frequently about the stability and adjustment of the equipment, thereby improving the success rate of the operation and the patient's postoperative recovery experience. Therefore, this bracket is not only an innovation in surgical tools, but also provides strong support for improving the safety and effectiveness of thyroid surgery.

[0042] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0043] The present application is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0044] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0045] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A thyroid surgery support, comprising a base (1), a lifting assembly and a length adjustment assembly, characterized in that: The lifting assembly comprises a worm (2), a worm wheel (3), a first handle (4), a first screw (5), a screw tube (6), a lifting plate (7), a cover (8), a guide rod (9) and a guide tube (10); the base (1) is provided with a cover (8) with a lower opening movable cavity; the cover (8) is provided with the worm wheel (3) and the worm (2); the worm wheel (3) and the worm (2) are meshed; the center of the upper part of the worm wheel (3) is provided with a first screw (5) penetrating the cover (8); the lower part of the lifting plate (7) is provided with a screw tube (6) threadedly connected to the first screw (5); the guide rods (9) are also provided at the four corners below the lifting plate (7); the base (1) is also provided with a guide tube (10) plugged into the guide rod (9); the output end of the first handle (4) passes through the cover (8) and is connected to the worm (2); The length adjustment assembly comprises a fixed plate (11), a movable plate (12), a slider (13), a second screw rod (14), a second handle (15), a fixed arc plate (16) and a movable arc plate (17); the fixed plate (11) is arranged at one end above the lifting plate (7); the fixed arc plate (16) is arranged above the fixed plate (11); a sliding hole adapted to the slider (13) is arranged at the other end above the lifting plate (7); a screw rod (14) is arranged in the sliding hole and a screw rod (15 ... 3), the second screw rod (14) is threadedly connected to the slider (13), the second handle (15) passes through the lifting plate (7) and is connected to the second screw rod (14), the movable plate (12) is also arranged on the slider (13), a receiving groove is arranged on the side of the fixed arc plate (16) close to the slider (13), the movable arc plate (17) is slidably connected to the receiving groove, and the movable arc plate (17) is connected to the movable plate (12) at its lower side.

2. A thyroid surgery stent according to claim 1, characterized in that: The sliding block (13) is in the shape of an I-shaped character, and limit plates (18) are arranged on the left and right sides of the sliding hole and are matched with the notches on the left and right sides of the sliding block (13).

3. A thyroid surgery stent according to claim 2, characterized in that: The width of the left and right sides of the movable plate (12) is greater than the width of the left and right sides of the sliding block (13), and the bottom wall of the movable plate (12) is in contact with the top wall of the lifting plate (7).

4. A thyroid surgery stent according to claim 3, characterized in that: The length adjustment component is also provided with a filling component, the filling component comprising a first Velcro (19), a second Velcro (20) and a filling pad (21), the first Velcro (19) being symmetrically arranged on the left and right sides above the fixed arc plate (16) and the movable arc plate (17), and the second Velcro (20) bonded to the first Velcro (19) being arranged below the filling pad (21).

5. A thyroid surgery stent according to claim 4, characterized in that: A stepped groove matching the fixed arc plate (16) is provided below the filling pad (21).

6. A thyroid surgery stent according to claim 5, characterized in that: The bottom wall of the guide rod (9) is lower than the bottom wall of the spiral tube (6).

7. A thyroid surgery stent according to claim 6, characterized in that: A hemispherical body (22) is also arranged below the guide rod (9).

8. A thyroid surgery stent according to claim 7, characterized in that: The first handle (4) is provided with a first friction pattern (23).

9. A thyroid surgery stent according to claim 8, characterized in that: The second handle (15) is provided with a second friction pattern (24).

10. A thyroid surgery stent according to claim 9, characterized in that: The fixed plate (11) is also provided with reinforcing ribs (25) for supporting the fixed arc-shaped plate (16).

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