Cervical vertebra fusion cage test mold

Abstract

The utility model belongs to the technical field of medical instruments, and discloses a cervical fusion cage test mold. The cervical fusion cage test mold comprises a holding piece, a mounting piece, a locking piece and a plurality of test mold heads. Wherein the holding piece is used for being held by an operator; one end of the mounting piece is connected to the holding piece; the test die heads are different in height, and each test die head is detachably connected to one end, far away from the holding piece, of the mounting piece; the periphery of the mounting part is sleeved with the locking part, one end of the locking part slides in the axial direction of the locking part, is elastically connected to the holding part and can be locked and connected by the holding part, and the other end of the locking part is used for locking or loosening the test die head and the mounting part. According to the cervical fusion cage test mold, the number and cost of tools can be reduced through rapid replacement of the test mold head, the operation process is simplified, the operation efficiency is improved, and the application range is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a cervical fusion device trial model. Background Art

[0002] In the field of spinal surgery, cervical fusion often requires the use of various models of cervical fusion cages to select the most appropriate cage for the procedure. The primary purpose of these cervical fusion cages is to simulate the actual surgical procedure through simulation experiments, evaluate the effects of different models of fusion cages in patients, and ultimately select the most appropriate cage for the actual procedure.

[0003] In the existing technology, it is usually necessary to make a corresponding cervical fusion cage trial mold for each fusion cage of different heights to conduct simulation experiments. For example, if 5 fusion cages of different heights need to be prepared, then 5 corresponding cervical fusion cage trial molds need to be made. This arrangement allows the operator to accurately simulate the actual surgical process. However, there are also some problems: First, it takes a lot of time and cost to make a large number of cervical fusion cage trial molds. Second, since each cervical fusion cage trial mold is independent, the operator needs to replace and adjust it multiple times during the simulation experiment, which not only increases the complexity of the simulation experiment, but may also affect the efficiency and effect of the simulation experiment.

[0004] Therefore, a cervical fusion cage test model is urgently needed to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide a cervical fusion cage trial mold, which can reduce the number and cost of tools through the rapid replacement of the trial mold head, simplify the operation process, improve the operation efficiency, and expand the scope of application.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] Cervical fusion cage trial model, including:

[0008] A gripping piece, the gripping piece is used for the operator to grip;

[0009] A mounting member, one end of which is connected to the holding member;

[0010] A plurality of trial mold heads, each of which has different heights, and each of which is detachably connected to an end of the mounting member away from the holding member;

[0011] The locking piece is sleeved on the outer periphery of the mounting piece, one end of the locking piece slides along its own axis and is elastically connected to the holding piece and can be locked and connected by the holding piece, and the other end is used to lock or loosen the test mold head and the mounting piece.

[0012] Optionally, an open groove is provided at one end of the mounting member away from the holding member, and the open groove is used to install the trial mold head; a plurality of fixed balls are provided on the groove wall of the open groove along its own circumferential movement, and a limiting groove is provided on the outer periphery of the trial mold head, and the fixed balls can be limitedly connected to the limiting groove.

[0013] Optionally, the locking member includes a first inner cavity and a second inner cavity, the first inner cavity and the second inner cavity are sequentially arranged along a direction from the gripping member to the trial die head, the inner diameter of the second inner cavity is larger than the inner diameter of the first inner cavity, and the inner wall of the first inner cavity can press against the fixing ball, so that the fixing ball presses against the trial die head;

[0014] The locking member is configured to be able to move along its own axial direction toward or away from the holding member, so that the fixing ball is located in the second inner cavity or the first inner cavity.

[0015] Optionally, a plurality of mounting holes are formed in the wall of the open groove, and the fixing balls are positioned in the mounting holes in a one-to-one correspondence, and the diameter of the fixing balls is greater than the thickness of the wall of the open groove.

[0016] Optionally, the opening groove is provided with an anti-rotation port near one end of the trial die head, and the trial die head is provided with an anti-rotation protrusion, which is connected to the anti-rotation port to prevent the trial die head from rotating.

[0017] Optionally, a limiting protrusion is provided on the outer periphery of the locking member, and the limiting protrusion can abut against the holding member to limit the movement distance of the locking member.

[0018] Optionally, a sliding groove is provided on one end of the holding member facing the trial mold head, and a sliding portion is provided on the outer periphery of the locking member facing the holding member, and the sliding portion is slidably connected to the sliding groove.

[0019] Optionally, the groove wall of the above-mentioned sliding groove is provided with a plurality of limit pins along its own circumference, and the above-mentioned limit pins are slidably connected to the above-mentioned sliding part. The outer circumference of the above-mentioned locking member is provided with a plurality of clamping grooves one by one, and the above-mentioned clamping grooves are connected to the above-mentioned sliding part. The above-mentioned holding member and the above-mentioned locking member can rotate relative to each other so that the above-mentioned limit pins are limitedly connected to the above-mentioned clamping grooves.

[0020] Optionally, an elastic member is provided between the locking member and the bottom of the sliding slot.

[0021] Optionally, a fixing hole is further provided at the bottom of the sliding groove, and the mounting member extends into the fixing hole and is fixedly connected to the holding member.

[0022] Beneficial effects of the utility model:

[0023] The utility model provides a cervical fusion device test mold, which is assembled and formed by a gripping piece, a mounting piece, a locking piece, and a test mold head. The test mold head is provided with a variety of different heights to meet the height requirements of the cervical fusion device test mold. When conducting a test, the test mold head can be disassembled and assembled according to the requirements to realize the assembly and forming of cervical fusion device test molds of various heights. The operation is simple, and the number of cervical fusion device test molds during the test is reduced, thereby reducing the manufacturing cost; simplifying the test process and improving the work efficiency. In addition, it also improves the accuracy of the test process, improves the test effect, and provides accurate simulation results for actual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front view of a cervical fusion cage trial model provided by a specific embodiment of the utility model;

[0025] Figure 2 It is a cross-sectional view of a cervical fusion cage trial mold provided by a specific embodiment of the utility model;

[0026] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle;

[0027] Figure 4 It is a cross-sectional view of a core shaft provided by a specific embodiment of the present utility model;

[0028] Figure 5 It is a front view of a locking member provided in a specific embodiment of the present utility model;

[0029] Figure 6 yes Figure 5 Cross-section at the middle BB;

[0030] Figure 7 yes Figure 2 Cross-sectional view of the locking member at CC in the unlocked state;

[0031] Figure 8 yes Figure 2 Cross-sectional view of the locking member at CC in the locked state;

[0032] Figure 9 yes Figure 6 A partial enlarged view of point D in the middle;

[0033] Figure 10 yes Figure 2 A partial enlarged view of point E in the middle;

[0034] Figure 11 It is a cross-sectional view of a mounting member provided in a specific embodiment of the present utility model;

[0035] Figure 12It is a front view of a trial die head provided in a specific embodiment of the utility model;

[0036] Figure 13 It is a cross-sectional view of a locking member provided in a specific embodiment of the present utility model.

[0037] In the picture:

[0038] 10. Grip; 11. Mandrel; 111. Sliding groove; 112. Limit pin; 113. Fixing hole; 114. Through hole; 12. Handle cover;

[0039] 20. Mounting piece; 21. Opening slot; 22. Fixed ball; 23. Mounting hole; 24. Anti-rotation port; 25. Pin hole; 26. Boss;

[0040] 30. Trial die head; 31. Connecting portion; 311. Limiting groove; 312. Anti-rotation protrusion; 32. Protrusion;

[0041] 40. Locking member; 401. First inner cavity; 402. Second inner cavity; 403. Third inner cavity; 41. Position-limiting protrusion; 42. Main body; 421. Sliding portion; 422. Snap-fit ​​groove; 423. Snap-fit ​​protrusion;

[0042] 50. Elastic member; 60. Pin. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0044] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0045] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0046] In the description of this embodiment, the terms "upper," "lower," "left," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0047] This embodiment provides a cervical fusion cage trial mold for use in a simulation experiment before cervical fusion surgery.

[0048] Please refer to Figure 1 and Figure 2 Specifically, the cervical fusion cage trial mold includes a gripping member 10, a mounting member 20, a locking member 40, and a plurality of trial mold heads 30. The gripping member 10 is used for gripping by an operator; one end of the mounting member 20 is connected to the gripping member 10; the plurality of trial mold heads 30 have different heights, and each trial mold head 30 is detachably connected to an end of the mounting member 20 away from the gripping member 10; the locking member 40 is sleeved on the outer periphery of the mounting member 20, one end of the locking member 40 slides along its own axial direction and is elastically connected to the gripping member 10 and can be locked by the gripping member 10, while the other end is used to lock or release the trial mold head 30 and the mounting member 20.

[0049] The cervical fusion device trial mold in this embodiment is assembled and formed by a gripping member 10, a mounting member 20, a locking member 40, and a trial mold head 30. The trial mold head 30 is provided with a variety of different heights to meet the height requirements of the cervical fusion device trial mold. When conducting a test, the trial mold head 30 can be disassembled and assembled as required to realize the assembly and formation of cervical fusion device trial molds of various heights. The operation is simple, and the number of cervical fusion device trial molds during the test is reduced, thereby reducing manufacturing costs, simplifying the test process, and improving work efficiency. In addition, it also improves the accuracy of the test process, improves the test effect, and provides accurate simulation results for actual operation.

[0050] Please refer to Figure 2In some embodiments, the gripping member 10 includes a core shaft 11 and a handle sleeve 12. The handle sleeve 12 is sleeved on the outer periphery of the core shaft 11. The core shaft 11 is connected to the mounting member 20, and the core shaft 11 is slidably and elastically connected to the locking member 40. The core shaft 11 is used to connect with the mounting member 20 and the locking member 40, and the handle sleeve 12 is provided to facilitate the operator's grip.

[0051] Please refer to Figures 2 to 5 Specifically, the end of the gripping member 10 facing the trial die head 30 is provided with a sliding groove 111, and the outer periphery of the locking member 40 facing the gripping member 10 is provided with a sliding portion 421, which is slidably connected within the sliding groove 111. Specifically, the end of the mandrel 11 facing the trial die head 30 is provided with the sliding groove 111. The provision of the sliding groove 111 and the sliding portion 421 enables a sliding connection between the two.

[0052] Optionally, two sliding portions 421 are provided opposite to each other. The provision of the two sliding portions 421 improves the stability of the sliding between the gripping member 10 and the locking member 40 .

[0053] When the locking member 40 and the holding member 10 are assembled, a sliding connection is required between the locking member 40 and the holding member 10 to facilitate the disassembly of the trial mold 30. After the trial mold 30 is installed, the locking member 40 and the holding member 10 need to be locked to avoid the problem of deviation during the use of the cervical fusion cage trial mold, which may cause the test to fail. Therefore, please refer to Figures 3 to 6 More specifically, the wall of the sliding groove 111 is provided with a plurality of limiting pins 112 along its circumference. The limiting pins 112 are slidably connected to the sliding portion 421. The outer circumference of the locking member 40 is provided with a plurality of engaging grooves 422 correspondingly. The engaging grooves 422 are connected to the sliding portion 421. The gripping member 10 and the locking member 40 can rotate relative to each other so that the limiting pins 112 are limitedly connected to the engaging grooves 422. Figure 7 As shown, when the trial die head 30 needs to be disassembled, the limit pin 112 is slidably connected to the sliding portion 421; Figure 8 As shown, when locking is required, the gripping member 10 and the locking member 40 can rotate relative to each other, and the limiting pin 112 slides into the engaging groove 422 and is limitedly connected with the engaging groove 422 to lock the two.

[0054] Please refer to Figures 7 to 9 More specifically, a clamping protrusion 423 is provided at the bottom of the clamping groove 422 near the side away from the sliding portion 421. The clamping protrusion 423 is used to clamp the limit pin 112 between the clamping protrusion 423 and the groove wall of the clamping groove 422 away from the sliding portion 421, which can better realize the clamping and fixing effect of the limit pin 112.

[0055] Optionally, two of the limiting pins 112 and the engaging grooves 422 are provided in a one-to-one correspondence to better achieve locking between the locking member 40 and the holding member 10 .

[0056] Please refer to Figure 3 Specifically, an elastic member 50 is provided between the locking member 40 and the bottom of the sliding groove 111 to realize an elastic connection between the two, so that the locking member 40 and the holding member 10 are both in a normal installation position when no disassembly is required. When disassembly is required, the locking member 40 is moved toward the holding member 10. At this time, the elastic member 50 is compressed. After the disassembly is completed, the locking member 40 automatically resets, which facilitates the operator to quickly disassemble and assemble the trial mold head 30.

[0057] Optionally, the elastic member 50 is a spring, which has a simple structure, low cost and good elasticity.

[0058] Please refer to Figure 2 and Figure 4 Specifically, a fixing hole 113 is further opened at the bottom of the sliding groove 111 , and the mounting member 20 extends into the fixing hole 113 and is fixedly connected to the holding member 10 to achieve a fixed connection between the mounting member 20 and the holding member 10 .

[0059] More specifically, a through hole 114 is formed in the wall of the fixing hole 113 , and a pin hole 25 is formed in the mounting member 20 . The pin shaft 60 is passed through the through hole 114 and the pin hole 25 , thereby achieving a fixed connection between the mounting member 20 and the gripping member 10 .

[0060] Please refer to Figure 2 、 Figures 10 to 12 In some embodiments, the end of the mounting member 20 away from the gripping member 10 is provided with an open slot 21 for mounting a test die head 30. The slot 21 is provided with a plurality of retaining balls 22 movably disposed along its circumference. The test die head 30 is provided with a retaining groove 311 on its outer circumference, and the retaining balls 22 are capable of being positionally engaged with the retaining grooves 311. To install the test die head 30, the test die head 30 can be pushed into the open slot 21, and the retaining balls 22 are engaged with the retaining grooves 311 to achieve a positional connection between the two.

[0061] Specifically, the wall of the open slot 21 is provided with a plurality of mounting holes 23, and fixed balls 22 are positioned within the mounting holes 23 in a one-to-one manner. The diameter of the fixed balls 22 is greater than the thickness of the wall of the open slot 21. This arrangement allows the fixed balls 22 to move axially along the mounting holes 23, allowing them to move away from the test die head 30 when the test die head 30 is inserted into the open slot 21. After the fixed balls 22 align with the retaining grooves 311 of the test die head 30, the fixed balls 22 return to their original position and retain the retaining grooves 311, thereby connecting the test die head 30.

[0062] More specifically, the opening groove 21 is provided with an anti-rotation port 24 near one end of the trial die head 30, and the trial die head 30 is provided with an anti-rotation protrusion 312. The anti-rotation protrusion 312 is connected to the anti-rotation port 24 to prevent the trial die head 30 from rotating, so that the mounting member 20 can limit the trial die head 30 in the axial direction and in the circumferential direction.

[0063] Optionally, the anti-rotation port 24 and the anti-rotation protrusion 312 have the same shape for better fitting and connection. Optionally, the shape of the anti-rotation port 24 and the anti-rotation protrusion 312 are both hexagonal, quadrilateral, etc., which can achieve the anti-rotation effect while not affecting the assembly of other structures.

[0064] Please refer to Figure 2 、 Figure 10 and Figure 13 In some embodiments, the locking member 40 includes a first inner cavity 401 and a second inner cavity 402, and the first inner cavity 401 and the second inner cavity 402 are arranged in sequence along the direction from the holding member 10 to the test mold head 30. The inner diameter of the second inner cavity 402 is larger than the inner diameter of the first inner cavity 401, and the inner wall of the first inner cavity 401 can press against the fixed ball 22 so that the fixed ball 22 presses against the test mold head 30; the locking member 40 is configured to be able to move along its own axial direction toward or away from the holding member 10 so that the fixed ball 22 is located in the second inner cavity 402 or the first inner cavity 401, thereby realizing the separation and tightening of the fixed ball 22, and then realizing the loosening or locking of the test mold head 30, so as to realize the rapid disassembly and assembly of the test mold head 30.

[0065] Please refer to Figure 2 、 Figure 3 and Figure 13 In some embodiments, the locking member 40 further includes a third inner cavity 403. The inner diameter of the third inner cavity 403 is larger than that of the first inner cavity 401, thereby creating a gap between the third inner cavity 403 and the mounting member 20. The elastic member 50 is disposed in this gap. This arrangement not only ensures elastic connection of the elastic member 50 but also limits the position of the elastic member 50, preventing elastic failure caused by falling off or shaking of the elastic member 50.

[0066] Please refer to Figure 2 and Figure 13 In some embodiments, a limiting protrusion 41 is provided on the periphery of the locking member 40. Specifically, the locking member 40 includes a main body 42 and a limiting protrusion 41, and the limiting protrusion 41 is provided on the periphery of the main body 42. The limiting protrusion 41 can abut against the grip 10 to limit the movement distance of the locking member 40. This arrangement can limit the distance that the locking member 40 can move toward the grip 10, thereby preventing excessive movement of the locking member 40 from causing instability in the connection of other structures.

[0067] Please refer to Figure 2 and Figure 10 In some embodiments, a boss 26 is further provided on the outer periphery of the mounting member 20 close to the trial mold head 30 for limiting the locking member 40, thereby limiting the position of the locking member 40 in the direction of movement away from the holding member 10. It cooperates with the limiting protrusion 41 to better limit the movement range of the locking member 40.

[0068] In some embodiments, a protrusion 32 is provided on the outer periphery of the trial die head 30. The protrusion 32 abuts against the boss 26 to achieve a position limit between the trial die head 30 and the mounting member 20, thereby facilitating positioning and limiting the distance that the trial die head 30 can extend into the opening 21 when the trial die head 30 is installed. Specifically, the trial die head 30 includes a connecting portion 31 and a protrusion 32. The connecting portion 31 is used to connect to the mounting member 20, and the protrusion 32 is provided with a die head for operation.

[0069] The specific operation process of disassembling and assembling the cervical fusion device trial mold head 30 provided in this embodiment is described below.

[0070] When assembling the cervical fusion device trial mold head 30, first, assemble the gripping member 10, the mounting member 20, and the locking member 40. At this time, the locking member 40 and the gripping member 10 are in an unlocked state. Then, press the locking member 40 to move the locking member 40 toward the gripping member 10 until the limiting protrusion 41 abuts against the gripping member 10. At this time, the locking member 40 releases the tight restriction on the fixing ball 22, and the trial mold head 30 is inserted into the opening groove 21. The fixing ball 22 moves away from the trial mold head 30 until the trial mold head 30 is installed in place and the fixing ball 22 is connected to the limiting groove 311 of the trial mold head 30. At this time, release the locking member 40, so that the locking member 40 is reset under the action of the elastic force of the elastic member 50, and the fixing ball 22 can be locked, thereby achieving the fixation of the trial mold head 30. Finally, the locking member 40 and / or the holding member 10 are rotated so that the two rotate relative to each other, and the limiting pin 112 slides from the sliding portion 421 into the snap-fit ​​groove 422, and is limited by the groove wall and the snap-fit ​​protrusion 423 of the snap-fit ​​groove 422, thereby locking the locking member 40 and the holding member 10, and the assembly of the trial mold head 30 of the cervical fusion device is completed.

[0071] When disassembling the trial die head 30 of the cervical fusion cage, first release the locking state between the locking member 40 and the holding member 10, then press the locking member 40 to release the tight restriction on the fixing ball 22, and then the trial die head 30 can be disassembled.

[0072] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Cervical fusion cage trial model, characterized in that: include: A gripping member (10), wherein the gripping member (10) is used for gripping by an operator; A mounting member (20), one end of which is connected to the holding member (10); A plurality of trial mold heads (30), wherein the plurality of trial mold heads (30) have different heights, and each of the trial mold heads (30) is detachably connected to an end of the mounting member (20) away from the holding member (10); A locking member (40) is sleeved on the outer periphery of the mounting member (20), one end of the locking member (40) slides along its own axial direction and is elastically connected to the holding member (10) and can be locked and connected by the holding member (10), and the other end is used to lock or loosen the test mold head (30) and the mounting member (20).

2. The cervical fusion cage trial mold according to claim 1, characterized in that: An end of the mounting member (20) away from the holding member (10) is provided with an open groove (21), and the open groove (21) is used to install the test die head (30); a groove wall of the open groove (21) is provided with a plurality of fixed balls (22) that can move along its own circumference, and a limiting groove (311) is provided on the outer periphery of the test die head (30), and the fixed balls (22) can be limitedly connected to the limiting groove (311).

3. The cervical fusion cage trial mold according to claim 2, characterized in that: The locking member (40) comprises a first inner cavity (401) and a second inner cavity (402), wherein the first inner cavity (401) and the second inner cavity (402) are sequentially arranged along a direction from the holding member (10) to the trial die head (30), the inner diameter of the second inner cavity (402) is larger than the inner diameter of the first inner cavity (401), and the inner wall of the first inner cavity (401) can press against the fixing ball (22), so that the fixing ball (22) presses against the trial die head (30); The locking member (40) is configured to be movable along its own axis toward or away from the holding member (10) so that the fixing ball (22) is located in the second inner cavity (402) or the first inner cavity (401).

4. The cervical fusion cage trial mold according to claim 2, characterized in that: The groove wall of the open groove (21) is provided with a plurality of mounting holes (23), and the fixing balls (22) are correspondingly positioned in the mounting holes (23). The diameter of the fixing balls (22) is greater than the thickness of the groove wall of the open groove (21).

5. The cervical fusion cage trial mold according to claim 2, characterized in that: An anti-rotation port (24) is provided at one end of the opening slot (21) close to the trial die head (30), and the trial die head (30) is provided with an anti-rotation protrusion (312). The anti-rotation protrusion (312) is connected to the anti-rotation port (24) to prevent the trial die head (30) from rotating.

6. The cervical fusion cage trial mold according to claim 1, characterized in that: A limiting protrusion (41) is provided on the outer periphery of the locking member (40), and the limiting protrusion (41) can abut against the holding member (10) to limit the movement distance of the locking member (40).

7. The cervical fusion cage trial mold according to any one of claims 1 to 6, characterized in that: The holding member (10) is provided with a sliding groove (111) on one end facing the trial die head (30), and the locking member (40) is provided with a sliding portion (421) on the outer periphery of one side facing the holding member (10), and the sliding portion (421) is slidably connected in the sliding groove (111).

8. The cervical fusion cage trial mold according to claim 7, characterized in that: The groove wall of the sliding groove (111) is provided with a plurality of limit pins (112) along its own circumference, and the limit pins (112) are slidably connected to the sliding part (421). The outer circumference of the locking member (40) is provided with a plurality of snap-in grooves (422) one by one, and the snap-in grooves (422) are connected to the sliding part (421). The holding member (10) and the locking member (40) can rotate relative to each other so that the limit pins (112) are limitedly connected in the snap-in grooves (422).

9. The cervical fusion cage trial mold according to claim 7, characterized in that: An elastic member (50) is provided between the locking member (40) and the bottom of the sliding slot (111).

10. The cervical fusion cage trial mold according to claim 7, characterized in that: The bottom of the sliding groove (111) is also provided with a fixing hole (113), and the mounting member (20) extends into the fixing hole (113) and is fixedly connected to the holding member (10).

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