Adjustable prosthesis adaptive to human thyroid cartilage replacement

Abstract

The invention provides an adjustable prosthesis adaptive to human thyroid cartilage replacement. The prosthesis comprises an adjusting support, the adjusting support is provided with a first end and a second end which can rotate relatively, and the adjusting support comprises a locking device used for locking the included angle between the first end and the second end; the first adaptive support is connected with the first end of the adjusting support and used for being connected with the incomplete end of one side of the thyroid cartilage; the second adaptive support is connected with the second end of the adjusting support and used for being connected with the incomplete end of the other side of the thyroid cartilage; the adjusting support is located at the connecting position or the pre-connecting position of two cartilage plates in the thyroid cartilage. The thyroid cartilage prosthesis has the effect of improving the wide applicability of the thyroid cartilage prosthesis to patients.

Description

Technical Field

[0001] The invention relates to the technical field of display panels, and in particular to an adjustable prosthesis adapted for human thyroid cartilage replacement. Background Art

[0002] The thyroid cartilage is the largest laryngeal cartilage. It is composed of two quadrilateral cartilage plates on the left and right, forming the front and side walls of the larynx. The rear edge of the plate is free, and the upper angle is connected to the greater angle of the hyoid bone by ligaments, and the lower angle forms a joint with the cricoid cartilage. Some patients with laryngeal diseases or laryngeal injuries often inevitably have part of the thyroid cartilage removed during laryngeal resection or repair surgery. The thyroid cartilage is a non-regenerative tissue, and the defect of the thyroid cartilage is an irreversible injury. If a large amount of thyroid cartilage is removed, it may seriously affect the patient's swallowing function, voice function, and respiratory function.

[0003] At present, in order to reduce the impact of partial thyroid cartilage loss on patients after thyroid cartilage resection or traumatic damage, a prosthesis can be implanted to replace the function of the thyroid cartilage, which has a good effect. However, the shape of thyroid cartilage varies from person to person, and the existing thyroid cartilage prosthesis needs to be customized according to the patient's thyroid cartilage condition, and has poor applicability to different patients. Summary of the invention

[0004] In view of this, the present invention aims to provide an adjustable prosthesis adapted for human thyroid cartilage replacement, so as to improve the wide applicability of the thyroid cartilage prosthesis to patients.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] An adjustable prosthesis adapted for human thyroid cartilage replacement, comprising:

[0007] An adjusting bracket, the adjusting bracket having a first end and a second end that can rotate relative to each other, and comprising a locking device for locking an angle between the first end and the second end;

[0008] A first adapter bracket, the first adapter bracket is connected to the first end of the adjustment bracket and is used to connect to one side of the defective end of the thyroid cartilage;

[0009] A second adapter bracket, the second adapter bracket is connected to the second end of the adjustment bracket and is used to connect to the other defective end of the thyroid cartilage;

[0010] The adjusting bracket can be implanted at the connection or pre-connection of two cartilage plates in the thyroid cartilage.

[0011] Further, the first adapting bracket includes: a first frame, the first frame is connected to the adjusting bracket;

[0012] The second adapting bracket comprises: a second frame, the second frame being connected to the adjusting bracket;

[0013] A perforated structure is disposed in both the first frame and the second frame.

[0014] Furthermore, the porous structure is a metal wire mesh.

[0015] Furthermore, the mesh of the metal wire mesh is square with a side length of 1mm-2mm.

[0016] Furthermore, the porous structure is a mesh plate, and human tissues can be attached to both sides of the porous structure.

[0017] Furthermore, the mesh of the mesh plate is any one of cylindrical, truncated cone or hourglass shape, and the minimum diameter of the mesh is 400 μm-600 μm.

[0018] Furthermore, a receiving groove is provided on one end of the first adapting bracket and / or the second adapting bracket which is away from the adjusting bracket, and the incomplete end of the thyroid cartilage is inserted into the adjacent receiving groove.

[0019] Furthermore, the adjusting bracket also includes:

[0020] a first adjusting ring, on which the first end of the adjusting bracket is arranged, and on the inner wall of the first adjusting ring a ratchet is arranged;

[0021] a second adjusting ring, on which the second end of the adjusting bracket is arranged;

[0022] The locking device is rotatably connected to the first adjusting ring, and the locking device is connected to the second adjusting ring and can rotate synchronously with the second adjusting ring. A pawl engaged with the ratchet is provided on the locking device, so that the first adjusting ring can only rotate in one direction relative to the second adjusting ring.

[0023] Furthermore, the adjusting bracket also includes:

[0024] A first adjusting ring, on which the first end of the adjusting bracket is arranged, a rotating hole and a matching hole having a diameter larger than that of the rotating hole are arranged in the first adjusting ring, and the rotating hole is coaxially connected with the matching hole;

[0025] a second adjusting ring, on which the second end of the adjusting bracket is arranged;

[0026] The locking device includes a rotating part rotatably arranged in the rotating hole and a matching part plugged into the matching hole, and a positioning convex strip is provided on the matching part. After the positioning convex strip is inserted into any of the positioning grooves, the first adjusting ring and the locking device are fixedly connected.

[0027] Furthermore, the adjusting bracket also includes:

[0028] a first adjusting ring, on which the first end of the adjusting bracket is arranged;

[0029] a second adjusting ring, on which the second end of the adjusting bracket is arranged;

[0030] The locking device includes an insertion shaft and a locking member. The insertion shaft is plugged into the second adjusting ring and can rotate synchronously with the second adjusting ring. The insertion shaft is rotationally plugged into the first adjusting ring. The locking member is connected between the insertion shaft and the first adjusting ring and is used to lock the relative position of the insertion shaft and the first adjusting ring.

[0031] Compared with the related art, the present invention has the following advantages:

[0032] The first adapter bracket and the second adapter bracket described in the present invention can adjust the adjustable angle of the bracket to adapt to the angle between the two cartilage plates of the thyroid cartilage of different patients, which can improve the wide applicability of the prosthesis to different patients and shorten the operation period; the first adapter bracket and the second adapter bracket are fixed to the corresponding defective ends of the thyroid cartilage by suturing or screws, so that the prosthesis replacement can play the function of the original thyroid cartilage.

[0033] In addition, tissue fluid on both sides of the porous structure can flow through the mesh holes, and human tissue is attached to the first adapter bracket and the second adapter bracket, so that new tissue can be attached to and grow on the first adapter bracket and the second adapter bracket, thereby improving the biocompatibility of the human body with the prosthesis, and at the same time, it has an improvement effect on restoring and supporting the laryngeal structure, protecting the vocal cords, and maintaining the glottis function. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0035] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0036] Figure 2 This is a schematic diagram of the connection between Example 1 of the present invention and the defective end of the thyroid cartilage;

[0037] Figure 3 This is an implementation of the locking device in Example 1 of the present invention;

[0038] Figure 4 This is another implementation of the locking device in Example 1 of the present invention;

[0039] Figure 5 This is another implementation of the locking device in Example 1 of the present invention;

[0040] Figure 6 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention;

[0041] Figure 7 This is a schematic diagram of the hole structure of Example 2 of the present invention;

[0042] Figure 8 Schematic diagram of the connection between Example 3 of the present invention and the defective end of the thyroid cartilage.

[0043] Description of reference numerals:

[0044] 100. The defective end of thyroid cartilage;

[0045] 1. Adjustment bracket; 11. First adjustment ring; 111. Ratchet; 112. Rotation hole; 113. Matching hole; 1131. Positioning groove; 12. Second adjustment ring; 13. Locking device; 131. Ratchet; 132. Rotation part; 133. Matching part; 1331. Positioning convex strip; 134. Insertion shaft; 135. Locking member;

[0046] 2. first adapter bracket; 21. first frame; 22. perforated structure; 221. mesh;

[0047] 3. A second adapter bracket;

[0048] 4. Receiving slot. DETAILED DESCRIPTION

[0049] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0050] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first", "second", etc., they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0051] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0052] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0053] Example 1

[0054] This embodiment relates to an adjustable prosthesis adapted for human thyroid cartilage replacement. The overall structure is as follows: Figure 1-Figure 2 As shown, it includes an adjusting bracket 1 , a first adapting bracket 2 and a second adapting bracket 3 .

[0055] The adjustment bracket 1 has a first end and a second end that can rotate relative to each other, and includes a locking device 13 for locking the angle between the first end and the second end; the first adapter bracket 2 is connected to the first end of the adjustment bracket 1, and is used to connect to the defective end on one side of the thyroid cartilage; the second adapter bracket 3 is connected to the second end of the adjustment bracket 1, and is used to connect to the defective end on the other side of the thyroid cartilage; after the adjustment bracket 1 is implanted in the human body, it is located at the connection or pre-connection of two cartilage plates in the thyroid cartilage.

[0056] The angles of the cartilage plates of the thyroid cartilage of different patients are different. The first adapter bracket 2 and the second adapter bracket 3 of this embodiment can be adjusted by adjusting the bracket 1, so that the prosthesis can have different cartilage plate angles to adapt to the different angles of thyroid cartilage 0 of different patients, thereby improving the wide applicability of the prosthesis to patients. Compared with conventional prostheses, it saves the time required for customization and shortens the operation cycle. In this embodiment, the shape of the adjustable bracket 1 is a cylinder with a diameter of 2mm-3mm.

[0057] The first adapter bracket 2 and the second adapter bracket 3 have no shape restrictions, and only need to have a flat outer wall. In this embodiment, the first adapter bracket 2 and the second adapter bracket 3 are both plate-shaped similar to the shape of the cartilage plate of the thyroid cartilage, which can make the patient's larynx more beautiful after surgery. The first adapter bracket 2 and the second adapter bracket 3 can be connected to the thyroid cartilage residual end 100 by suturing or installing screws. Figure 2The connection between the two cartilage plates of the thyroid cartilage is removed, and after the first adapter bracket 2 and the second adapter bracket 3 are connected to the defective end of the thyroid cartilage, the adjustment bracket 1 is located at the connection between the two cartilage plates of the original thyroid cartilage, so that the prosthesis and the original thyroid cartilage are closer in position. If the connection between the two cartilage plates of the thyroid cartilage is not completely removed, the adjustment bracket 1 is set outside the connection between the two cartilage plates.

[0058] Specifically, the first adapter bracket 2 includes a first frame 21 and a perforated structure 22, and the first frame 21 is connected to the adjustment bracket 1. The perforated structure 22 is connected and filled in the first frame 21, and is provided with a plurality of through meshes 221. The second adapter bracket 3 includes a second frame and a perforated structure 22, and the second frame has the same structure as the first frame 21. The perforated structure 22 is a metal wire mesh, and human tissue is attached to both sides.

[0059] The first frame 21 is used to enhance the overall structural strength, and the mesh 221 on the porous structure 22 is used to allow tissue fluid to pass through, which is conducive to the exchange of nutrients on both sides of the porous structure 22. At the same time, the mesh 221 also allows the human tissues on both sides of the porous structure 22 to grow together through the mesh 221 to form a whole. The material of the metal mesh can be any one of pure titanium, titanium alloy Ti6Al4V or stainless steel, which has good mechanical properties and corrosion resistance, and can improve the comfort of patients after surgery.

[0060] After being implanted in the human body, the human tissue attached to the porous structure 22 will gradually grow and wrap the prosthesis, which can enhance the compatibility of the prosthesis with the surrounding tissues, reduce the risk of immune rejection and inflammatory reactions, and thus improve the stability and durability of the implanted prosthesis. At the same time, after the human tissue wraps the prosthesis, the appearance of the patient's throat will also be more natural, reducing the difference between the prosthesis and the surrounding tissues.

[0061] Specifically, the mesh holes 221 of the metal mesh are square with a side length of 1 mm-2 mm, which can connect the two sides of the porous structure 22 and is beneficial to the growth of human tissue.

[0062] Reference Figure 3In an operative manner, the adjustment bracket 1 comprises a first adjustment ring 11, a second adjustment ring 12 and a locking device 13. The first end of the adjustment bracket 1 is arranged on the first adjustment ring 11, the first adapter bracket 2 is fixedly connected to the first adjustment ring 11, and a ratchet 111 is arranged on the inner wall of the first adjustment ring 11. Two second adjustment rings 12 are provided, which are coaxially located at the axial ends of the first adjustment ring 11, and the two second adjustment rings 12 are jointly fixedly connected to the second adapter bracket 3. The second end of the adjustment bracket 1 is arranged on the second adjustment ring 12, and the first adjustment ring 11 and the second adjustment ring 12 can rotate relative to each other coaxially, thereby realizing the angle adjustment between the first adapter bracket 2 and the second adapter bracket 3. The locking device 13 is columnar and is rotatably connected to the first adjustment ring 11. One end of the locking device 13 penetrates into one second adjustment ring 12, and the other end penetrates into another second adjustment ring 12 and is provided with a rotation stop block, which is inserted into the second adjustment ring 12, so that the second adjustment ring 12 and the locking device 13 can realize coaxial rotation. The anti-rotation block can be any structure except a rotating body. In this embodiment, the anti-rotation block is a rectangular parallelepiped.

[0063] An elastic pawl 131 is provided on the circumferential side wall of the locking device 13, and the pawl 131 is meshed with the ratchet 111, so that the locking device 13 and the first adjustment ring 11 can only rotate in one direction, and thus the angle between the first adapter bracket 2 and the second adapter bracket 3 can only be adjusted in one direction. The adjustable angle of the prosthesis is oriented toward the thyroid cartilage, so that after the prosthesis is connected to the thyroid cartilage, the angle between the first adapter bracket 2 and the second adapter bracket 3 will not increase, and at the same time, due to the support of the residual end 100 of the thyroid cartilage, the angle between the first adapter bracket 2 and the second adapter bracket 3 will not decrease.

[0064] Reference Figure 4 In another practicable manner, the adjustment bracket 1 includes a first adjustment ring 11, a second adjustment ring 12 and a locking device 13. The first end of the adjustment bracket 1 is arranged on the first adjustment ring 11, and the first adjustment ring 11 is fixedly connected to the first adapter bracket 2. A rotation hole 112 and a matching hole 113 having a diameter larger than the rotation hole 112 are provided in the first adjustment ring 11, and the rotation hole 112 is coaxially connected to the matching hole 113 and axially penetrates the first adjustment ring 11. The second end of the adjustment bracket 1 is arranged on the second adjustment ring 12, and two second adjustment rings 12 are provided, which are coaxially located at the axial ends of the first adjustment ring 11, and the two second adjustment rings 12 are fixedly connected to the second adapter bracket 3 together. The first adjustment ring 11 and the second adjustment ring 12 can coaxially rotate relative to each other, thereby realizing the angle adjustment between the first adapter bracket 2 and the second adapter bracket 3.

[0065] The locking device 13 is columnar, and includes a rotating portion 132, a matching portion 133, and a rotation-stop block that are fixedly connected in sequence along the axial direction. The rotating portion 132 is rotationally connected to the first adjustment ring 11, and the end of the rotating portion 132 away from the matching portion 133 passes through the first adjustment ring 11 and is rotationally connected to a second adjustment ring 12. In this embodiment, a plurality of positioning grooves 1131 are evenly distributed along the circumferential direction on the hole wall of the matching hole 113, and the number can preferably be eight. A limiting convex strip 1331 is provided on the circumferential side wall of the matching portion 133, and the limiting convex strip 1331 is adapted to the positioning groove 1131. When the limiting convex strip 1331 is inserted into the positioning groove 1131, the first adjustment ring 11 can be fixedly connected to the locking device 13. The rotation-stop block is inserted into another second adjustment ring 12, so that the second adjustment ring 12 and the locking device 13 can achieve coaxial rotation. The rotation-stop block can be any structure other than a rotating body. In this embodiment, the rotation-stop block is a rectangular parallelepiped.

[0066] When the adjustment bracket 1 is in use, the angle between the first adapter bracket 2 and the second adapter bracket 3 is adjusted, and the limiting convex strip 1331 is inserted into the positioning groove 1131 and the anti-rotation block is inserted into the second adjustment ring 12 to achieve the angle fixing between the first adapter bracket 2 and the second adapter bracket 3.

[0067] Reference Figure 5 In another practicable manner, the adjustment bracket 1 includes a first adjustment ring 11, a second adjustment ring 12 and a locking device 13. The first end of the adjustment bracket 1 is arranged on the first adjustment ring 11, and the first adjustment ring 11 is fixedly connected to the first adapter bracket 2. The second end of the adjustment bracket 1 is arranged on the second adjustment ring 12, and two second adjustment rings 12 are provided, which are coaxially located at the axial ends of the first adjustment ring 11, and the two second adjustment rings 12 are jointly fixedly connected to the second adapter bracket 3. The first adjustment ring 11 and the second adjustment ring 12 can coaxially rotate relative to each other, thereby realizing the angle adjustment between the first adapter bracket 2 and the second adapter bracket 3.

[0068] The locking device 13 includes an insertion shaft 134 and a locking member 135, and the insertion shaft 134 is rotatably connected to the first adjustment ring 11. One end of the insertion shaft 134 passes through the first adjustment ring 11 and is rotatably connected to a second adjustment ring 12, and the other end penetrates into another second adjustment ring 12 and is provided with a rotation-stop block, which is inserted into the second adjustment ring 12. The rotation-stop block enables the second adjustment ring 12 and the locking device 13 to achieve coaxial rotation. The rotation-stop block can be any structure except a rotating body. In this embodiment, the rotation-stop block is a rectangular parallelepiped. The first adjustment ring 11 is preset with a mounting hole that radially penetrates the first adjustment ring 11, and the locking member 135 is arranged in the mounting hole. One end of the locking member 135 is pressed against the insertion shaft 134 to fix the position of the first adjustment ring 11 and the insertion shaft 134, thereby fixing the angle between the first adapter bracket 2 and the second adapter bracket 3. The end of the locking member 135 does not protrude from the surface of the insertion shaft 134 . The locking member 135 may be a screw or a pin. In this embodiment, the locking member 135 is a screw.

[0069] When the adjustment bracket 1 is in use, first insert the insertion shaft 134 into the first adjustment ring 11 and the second adjustment ring 12, insert the anti-rotation block into the second adjustment ring 12, adjust the angle between the first adapter bracket 2 and the second adapter bracket 3, and screw the screw so that the tip of the screw is against the insertion shaft 134 to fix the angle.

[0070] Example 2

[0071] Reference Figure 6 and Figure 7 The difference between this embodiment and embodiment 1 is that the porous structure 22 is a mesh plate, and seed cells can be planted in the holes of the porous structure 22. After the seed cells grow, they can enhance the compatibility of the prosthesis with the surrounding tissues, reduce the risk of immune rejection and inflammatory reactions, and thus improve the stability and durability of the implanted prosthesis. Correspondingly, after the seed cells grow, the appearance of the patient's larynx will be more natural, reducing the difference between the prosthesis and the surrounding tissues. In this embodiment, the first frame 21 and the porous structure 22 are integrally formed.

[0072] Furthermore, the material of the mesh plate can be biodegradable PLGA (poly(lactic-co-glycolicacid, polylactic acid-glycolic acid copolymer), which has good biodegradability and mechanical properties, and can improve the patient's comfort after surgery. Of course, pure titanium, titanium alloy Ti6Al4V or stainless steel can also be used, which has good mechanical properties and corrosion resistance, and can improve the patient's comfort after surgery.

[0073] Specifically, the mesh of the mesh plate is any one of cylindrical, truncated cone or hourglass shape, and the minimum diameter of the mesh is 400 μm-600 μm. The shape of the mesh 221 is as follows: Figure 7As shown, the hole structure of the mesh 221 of this embodiment can be a circular through hole with a constant hole diameter, as shown in type a; it can also be a tapered hole with a large end and a small end and a linear transition, as shown in type b; it can also be an hourglass-shaped hole with a thin middle and thick ends, as shown in type c. Type a holes are easy to process and easy to form, while types b and c are conducive to improving the strength of the mesh structure and the firm attachment of implanted cells. When the hole type is type b or type c, the minimum hole diameter is about 400-600μm, the maximum hole diameter is about 1000μm-1500μm, and the porosity is about 60-80%, which is conducive to the firm attachment of tissue cells.

[0074] Example 3

[0075] Reference Figure 8 The difference between this embodiment and embodiment 1 is that a receiving groove 4 is provided on the first adapter bracket 2 and / or the second adapter bracket 3 so that the defective end of the thyroid cartilage can be inserted into the adjacent receiving groove 4.

[0076] This embodiment is applicable to the situation where the two cartilage plates are not connected after the thyroid cartilage is partially removed. A receiving groove 4 is provided at one end of the first frame 21 away from the adjustment bracket 1, and the two opposite groove walls of the receiving groove 4 are filled and connected with a metal wire mesh, so that the first adapter bracket 2 can be clamped on the defective end 100 of the thyroid cartilage. The subsequent connection of the first adapter bracket 2 to the thyroid cartilage by suturing or screws can make the prosthesis more firmly fixed. The second adapter bracket 3 has the same structure as the first adapter bracket 2 and is connected to the defective end 100 of the thyroid cartilage at the other end. Human tissue is attached to both sides of all the metal wire meshes.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable prosthesis adapted for human thyroid cartilage replacement, characterized in that: include: An adjustment bracket (1), the adjustment bracket (1) having a first end and a second end capable of rotating relative to each other, and comprising a locking device (13) for locking an angle between the first end and the second end; A first adapting bracket (2), the first adapting bracket (2) being connected to a first end of the adjusting bracket (1) and being used for connecting to a defective end of one side of the thyroid cartilage; A second adapting bracket (3), the second adapting bracket (3) being connected to the second end of the adjusting bracket (1) and being used for connecting to the other defective end of the thyroid cartilage; The adjustment bracket (1) can be implanted at the connection or pre-connection of two cartilage plates in the thyroid cartilage.

2. The adjustable prosthesis adapted for human thyroid cartilage replacement according to claim 1, characterized in that: The first adapting bracket (2) comprises: a first frame (21), wherein the first frame (21) is connected to the adjusting bracket (1); The second adapting bracket (3) comprises: a second frame, the second frame being connected to the adjusting bracket (1); A perforated structure (22) is disposed in both the first frame (21) and the second frame.

3. The adjustable prosthesis adapted for human thyroid cartilage replacement according to claim 2, characterized in that: The porous structure (22) is a metal wire mesh.

4. The adjustable prosthesis adapted for human thyroid cartilage replacement according to claim 3, characterized in that: The mesh (221) of the metal wire mesh is square, with a side length of 1mm-2mm.

5. The adjustable prosthesis adapted for human thyroid cartilage replacement according to claim 2, characterized in that: The porous structure (22) is a mesh plate, and human tissue can be attached to both sides of the porous structure (22).

6. The adjustable prosthesis adapted for human thyroid cartilage replacement according to claim 5, characterized in that: The mesh (221) of the mesh plate is any one of a cylindrical, truncated cone or hourglass shape, and the minimum diameter of the mesh (221) is 400 μm-600 μm.

7. The adjustable prosthesis adapted for human thyroid cartilage replacement according to claim 1, characterized in that: The first adapting bracket (2) and / or the second adapting bracket (3) are provided with a receiving groove (4) so ​​that the residual end of the thyroid cartilage can be inserted into the adjacent receiving groove (4).

8. The adjustable prosthesis adapted for human thyroid cartilage replacement according to claim 1, characterized in that: The adjusting bracket (1) further comprises: A first adjustment ring (11), the first end of the adjustment bracket (1) being arranged on the first adjustment ring (11), and a ratchet (111) being arranged on the inner wall of the first adjustment ring (11); a second adjustment ring (12), on which the second end of the adjustment bracket (1) is arranged; The locking device (13) is rotatably inserted into the first adjusting ring (11), and the locking device (13) is inserted into the second adjusting ring (12) and can rotate synchronously with the second adjusting ring (12). A ratchet pawl (131) meshing with the ratchet teeth (111) is provided on the locking device (13), so that the first adjusting ring (11) can only rotate in one direction relative to the second adjusting ring (12).

9. The adjustable prosthesis adapted for human thyroid cartilage replacement according to claim 1, characterized in that: The adjusting bracket (1) further comprises: a first adjusting ring (11), wherein the first end of the adjusting bracket (1) is arranged on the first adjusting ring (11), wherein a rotating hole (112) and a matching hole (113) having a diameter larger than the rotating hole (112) are arranged in the first adjusting ring (11), wherein the rotating hole (112) is coaxially connected to the matching hole (113), and a hole wall of the matching hole (113) is provided with a plurality of positioning grooves (1131); a second adjustment ring (12), on which the second end of the adjustment bracket (1) is arranged; The locking device (13) comprises a rotating portion (132) rotatably arranged in the rotating hole (112) and a matching portion (133) plugged into the matching hole (113); a positioning convex strip (1331) is provided on the matching portion (133); and the positioning convex strip (1331) is inserted into any one of the positioning grooves (1131) to form a fixed connection between the first adjusting ring (11) and the locking device (13).

10. The adjustable prosthesis adapted for human thyroid cartilage replacement according to claim 1, characterized in that: The adjusting bracket (1) further comprises: A first adjustment ring (11), on which the first end of the adjustment bracket (1) is arranged; a second adjustment ring (12), on which the second end of the adjustment bracket (1) is arranged; The locking device (13) comprises an insertion shaft (134) and a locking member (135); the insertion shaft (134) is inserted into the second adjustment ring (12) and can rotate synchronously with the second adjustment ring (12); the insertion shaft (134) is rotationally inserted into the first adjustment ring (11); and the locking member (135) is connected between the insertion shaft (134) and the first adjustment ring (11) and is used to lock the relative position of the insertion shaft (134) and the first adjustment ring (11).

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