Osteotomy plate locking device

Abstract

The present invention provides an osteotomy plate locking device, which includes: an osteotomy plate, a base and a locking assembly; the osteotomy plate is detachably connected to the base along a first direction; the locking assembly is movably connected to the base along a second direction that is angled with the first direction; the locking assembly moves between a first position and a second position along the second direction; when the locking assembly is in the first position, the relative position of the osteotomy plate and the base is locked; when the locking assembly is in the second position, the relative position of the osteotomy plate and the base is unlocked. With such a configuration, the osteotomy plate can be locked to the base through the locking assembly, ensuring that the osteotomy plate will not fall off the base during use, thereby improving the efficiency during surgery and reducing the risk of injury to the user.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to an osteotomy plate locking device. Background Art

[0002] During the unicompartmental replacement surgery, when the tibia side is processed, the tibial osteotomy plate is required to assist in the completion, and the position of the tibial osteotomy plate on the tibia needs to be determined by the tibial osteotomy extramedullary positioning tool. At present, tibial osteotomy plates are divided into two types: one-piece and split. The one-piece tibial osteotomy plate has a simple structure and is stable during use, but its osteotomy amount is constant. If the osteotomy amount is changed, the tibial osteotomy extramedullary positioning tool needs to be readjusted to complete it, which will increase the position of the nail hole after the secondary positioning and cause the risk of fracture. The osteotomy amount of the split tibial osteotomy plate is adjustable, which can be achieved by selecting different osteotomy plugs without changing the tibial osteotomy extramedullary positioning tool. However, during osteotomy, the osteotomy plug is generally not provided with a limit or locking device, so the osteotomy plug is easy to loosen, which affects the user experience and prolongs the operation time in mild cases, and the osteotomy plug falls out in severe cases, causing deviations in the osteotomy amount or causing harm to the user. Summary of the invention

[0003] The object of the present invention is to provide an osteotomy plate locking device to solve the problem that the osteotomy plug in the existing tibial osteotomy plate is easy to loosen or fall out.

[0004] In order to solve the above technical problems, the present invention provides an osteotomy plate locking device, which comprises: an osteotomy plate, a base and a locking assembly;

[0005] The osteotomy plate is detachably connected to the base body along a first direction;

[0006] The locking assembly is movably connected to the base along a second direction which is angled with the first direction; the locking assembly moves between a first position and a second position along the second direction;

[0007] When the locking assembly is located at the first position, the relative positions of the osteotomy plate and the base are locked;

[0008] When the locking assembly is located at the second position, the relative positions of the osteotomy plate and the base are unlocked.

[0009] Optionally, the base has a first elongated hole, and the major axis of the first elongated hole extends along the second direction;

[0010] At least a portion of the locking component is movably disposed in the first elongated hole along the second direction, and is restricted by the first elongated hole in movement along its short axis direction.

[0011] Optionally, the locking assembly includes a push-pressing member and a guide member connected to the push-pressing member, the push-pressing member has a friction feature, and the guide member is used to be movably inserted into the first elongated hole;

[0012] When the locking assembly is located at the first position, the pushing member is used to abut against the osteotomy plate to limit the movement of the osteotomy plate along the first direction, thereby locking the relative position of the osteotomy plate and the base;

[0013] When the locking assembly is located at the second position, the push member releases the abutment against the osteotomy plate, allowing the osteotomy plate to move along the first direction and withdraw from the base.

[0014] Optionally, the base has a pin hole, the pin hole is arranged at an angle with the first elongated hole, and the pin hole is connected with the first elongated hole; the guide member has a second elongated hole, and the major axis of the second elongated hole extends along the second direction;

[0015] The osteotomy plate locking device comprises a pin shaft, which is simultaneously passed through the pin hole and the second elongated hole, and the pin shaft limits the axial movement of the locking component along the first elongated hole.

[0016] Optionally, the osteotomy plate locking device further comprises a potential energy component;

[0017] One end of the potential energy component is connected to the locking component, and the other end of the potential energy component is connected to the base;

[0018] When the locking assembly is not subjected to external force, the locking assembly is in the first position;

[0019] The potential energy component is configured to store potential energy when the locking component moves from the first position to the second position; and release potential energy when the locking component moves from the second position to the first position.

[0020] Optionally, the potential energy component includes an elastic member and a fixing member;

[0021] The base has a tail hole opened along the second direction; the elastic member is inserted into the tail hole and connected to the locking assembly; at least a portion of the fixing member is inserted into the tail hole and connected to the elastic member; the fixing member is restricted from axial displacement relative to the tail hole.

[0022] Optionally, the tail hole has an internal thread, and the fixing piece has an external thread matching the internal thread; the fixing piece is threadedly connected to the tail hole.

[0023] Optionally, the elastic member is a spring having two opposite end surfaces perpendicular to the second direction, and the two end surfaces are respectively abutted against the locking assembly and the fixing member.

[0024] Optionally, the locking assembly has a limiting groove, and the limiting groove is used to abut against the elastic member.

[0025] Optionally, the base has a slot opened along the first direction, with one end of the slot being open and the other end being closed along the first direction; the osteotomy plate has a tooth adapted to the slot, the tooth being used to engage into the slot from the open end of the slot, and the closed end of the slot being used to abut against the osteotomy plate; after the tooth is engaged into the slot, the degrees of freedom except along the first direction are restricted by the slot.

[0026] In summary, the osteotomy plate locking device provided by the present invention comprises: an osteotomy plate, a base and a locking assembly; the osteotomy plate is detachably connected to the base along a first direction; the locking assembly is movably connected to the base along a second direction that is angled with the first direction; the locking assembly moves between a first position and a second position along the second direction; when the locking assembly is in the first position, the relative position of the osteotomy plate and the base is locked; when the locking assembly is in the second position, the relative position of the osteotomy plate and the base is unlocked.

[0027] With such configuration, the osteotomy plate can be locked to the base through the locking assembly, ensuring that the osteotomy plate will not fall off the base during use, thereby improving intraoperative efficiency and reducing the risk of injury to the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Those skilled in the art will appreciate that the accompanying drawings are provided for a better understanding of the present invention and do not constitute any limitation on the scope of the present invention.

[0029] Figure 1 is an exploded schematic diagram of an osteotomy plate locking device according to an embodiment of the present invention;

[0030] Figure 2 is a schematic diagram of a substrate according to an embodiment of the present invention;

[0031] Figure 3 is a schematic diagram of an osteotomy plate according to an embodiment of the present invention;

[0032] Figure 4a to Figure 4d is a schematic diagram of the cross-sectional shapes of several latch teeth according to an embodiment of the present invention;

[0033] Figure 5 is a schematic diagram of a locking assembly according to an embodiment of the present invention;

[0034] Figure 6 is a schematic diagram of an elastic member according to an embodiment of the present invention;

[0035] Figure 7 is a schematic diagram of a fixing member according to an embodiment of the present invention;

[0036] Figure 8 is a side view of an osteotomy plate locking device according to an embodiment of the present invention;

[0037] Fig. 9 yes Figure 8 AA cross-section diagram.

[0038] In the attached figure:

[0039] 1-base; 1a-slot; 1b-first long hole; 1c-pin hole; 1d-tail hole; 2-osteotomy plate; 2a-grip; 3-locking assembly; 3a-push member; 3b-guide member; 3c-second long hole; 3d-limiting groove; 4-elastic member; 4a, 4b-end face; 5-fixing member; 5a-rest surface; 5b-force-applying feature; 5c-external thread; 6-pin shaft. DETAILED DESCRIPTION

[0040] In order to make the purpose, advantages and features of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In addition, the structure shown in the drawings is often a part of the actual structure. In particular, the emphasis of each drawing is different, and sometimes different scales are used.

[0041] As used in the present invention, the singular forms "a", "an" and "the" include plural objects, the term "or" is generally used in a sense including "and / or", the term "several" is generally used in a sense including "at least one", and the term "at least two" is generally used in a sense including "two or more". In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" and "third" may explicitly or implicitly include one or at least two of the features. The term "proximal end" is usually the end close to the operator, and the term "distal end" is usually the end close to the patient, that is, the end close to the lesion. "One end" and "the other end" as well as "proximal end" and "distal end" usually refer to two corresponding parts, which not only include the endpoints. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. In addition, as used in the present invention, an element is arranged on another element, which usually only means that there is a connection, coupling, matching or transmission relationship between the two elements, and the connection, coupling, matching or transmission between the two elements can be direct or indirect through an intermediate element, and it cannot be understood as indicating or implying the spatial position relationship between the two elements, that is, an element can be in any position such as inside, outside, above, below or on one side of another element, unless the content clearly indicates otherwise. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] The object of the present invention is to provide an osteotomy plate locking device to solve the problem that the osteotomy plug in the existing tibial osteotomy plate is easy to loosen or fall out.

[0043] The following description is given with reference to the accompanying drawings.

[0044] Please refer to Figure 1 , Figure 2 , and combined with reference Figure 8 and Fig. 9 This embodiment provides an osteotomy plate locking device, which includes: an osteotomy plate 2, a base 1 and a locking assembly 3; the osteotomy plate 2 is arranged along a first direction ( Figure 2 and Fig. 9 The locking assembly 3 is detachably connected to the base 1 along a second direction ( Figure 2 and Fig. 9The locking assembly 3 moves between the first position and the second position along the second direction; when the locking assembly 3 is located at the first position (see Figure 8 and Fig. 9 ), the relative positions of the osteotomy plate 2 and the base 1 are locked; when the locking component 3 is in the second position, the relative positions of the osteotomy plate 2 and the base 1 are unlocked. With such configuration, the osteotomy plate 2 can be locked to the base 1 through the locking component 3, ensuring that the osteotomy plate 2 will not fall off from the base 1 during use, thereby improving the efficiency of the operation and reducing the risk of injury to the user. It should be noted that in Figure 1 and Figure 2 In the illustrated example, an acute angle is formed between the first direction O1 and the second direction O2. In some other embodiments, the two directions may be perpendicular to each other, which is not a limitation of the present invention.

[0045] Please refer to Figure 2 and Figure 3 The base 1 has a slot 1a opened along the first direction, one end of the slot 1a is open and the other end is closed along the first direction; the osteotomy plate 2 has a tooth 2a adapted to the slot 1a, the tooth 2a is used to be engaged with the slot 1a from the open end of the slot 1a, and the closed end of the slot 1a is used to abut against the osteotomy plate 2; after the tooth 2a is engaged with the slot 1a, the degrees of freedom except along the first direction are restricted by the slot 1a. Please refer to Figures 4a to 4d , which respectively show several cross-sectional shapes of the latch teeth 2a, of course, it can be understood that Figures 4a to 4d These are merely some examples of the latch teeth 2a and are not intended to limit the shape of the latch teeth 2a. In other embodiments, the latch teeth 2a may have other shapes. When the latch teeth 2a of the osteotomy plate 2 are engaged with the slot 1a from the open end thereof until they abut against the closed end thereof, the osteotomy plate 2 is inserted to a predetermined depth.

[0046] Please refer to Figure 2 , and combined with reference Figure 1 and Fig. 9 Optionally, the base 1 has a first elongated hole 1b, and the major axis of the first elongated hole 1b extends along the second direction; at least a portion of the locking assembly 3 is movably arranged in the first elongated hole 1b along the second direction, and is restricted by the first elongated hole 1b in the movement along its minor axis. It should be noted that the major axis of the first elongated hole 1b refers to the major axis of the cross section of the first elongated hole 1b along its own axial direction. Similarly, the minor axis of the first elongated hole 1b refers to the minor axis of the cross section of the first elongated hole 1b along its own axial direction, and the major axis and minor axis of the second elongated hole 3c hereinafter can also be understood by reference.

[0047] Further, the locking assembly 3 includes a guide 3b, which is used to be movably inserted into the first elongated hole 1b. The first elongated hole 1b is used to guide the moving direction of the locking assembly 3 through the guide 3b. Preferably, the inner dimension of the short axis direction of the cross section of the first elongated hole 1b is adapted to the outer contour dimension of the guide 3b, so that after the guide 3b is inserted into the first elongated hole 1b, it can only move along the long axis direction of the first elongated hole 1b, and the guide 3b abuts against the first elongated hole 1b along the short axis direction of the first elongated hole 1b, so that it cannot move along the short axis direction of the first elongated hole 1b. In an optional exemplary embodiment, the cross-sections of the first elongated hole 1b and the guide member 3b are both oblong, and the minor axis length of the guide member 3b is slightly smaller than the minor axis length of the first elongated hole 1b, so that the guide member 3b can movably penetrate into the first elongated hole 1b; and the major axis length of the guide member 3b is smaller than the major axis length of the first elongated hole 1b, and the difference between the two is L, so that the guide member 3b can move back and forth in the first elongated hole 1b along the second direction, and the maximum stroke of the back and forth movement is L.

[0048] Preferably, the locking assembly 3 includes a push-pushing member 3a, which is connected to the guide member 3b; the push-pushing member 3a has a friction feature, which may include a protrusion or a groove, which is used to increase the friction resistance between the operator and the finger when pushing, so that it is not easy to slip during use. The protrusion or groove may be in the form of granules, spheres, semicircles, stripes, etc., which is not limited in this embodiment.

[0049] When the locking assembly 3 is located at the first position, the pushing member 3a is used to abut against the osteotomy plate 2 to limit the movement of the osteotomy plate 2 along the first direction, thereby locking the relative position of the osteotomy plate 2 and the base 1; when the locking assembly 3 is located at the second position, the pushing member 3a releases the abutment against the osteotomy plate 2, allowing the osteotomy plate 2 to move along the first direction and withdraw from the base 1.

[0050] Please refer to Figure 8 and Fig. 9 In one example, after the latch 2a of the osteotomy plate 2 is engaged with the latch groove 1a, a side surface of the latch 2a along the first direction is flush with the side surface of the base 1. At this time, after the push member 3a moves to the first position, it abuts against the side surface of the latch 2a to prevent the latch 2a from withdrawing from the base 1 along the first direction, thereby locking the relative position of the osteotomy plate 2 and the base 1. When the push member 3a moves to the second position, the push member 3a moves toward Fig. 9The right side of the base 1 is moved by a distance L to release the abutment with the latch 2a, thereby avoiding the exit path of the latch 2a, allowing the osteotomy plate 2 to move along the first direction and exit from the base 1. At this time, a different osteotomy plate 2 can be replaced according to surgical needs, and the locking assembly 3 can be used again to lock the newly replaced osteotomy plate 2.

[0051] Optional, please refer to Figure 2 and Figure 5 , and combined with Figure 1 and Fig. 9 , the base 1 has a pin hole 1c, the pin hole 1c is arranged at an angle with the first elongated hole 1b, and the pin hole 1c is connected with the first elongated hole 1b; the guide 3b has a second elongated hole 3c, the long axis of the second elongated hole 3c extends along the second direction; the osteotomy plate locking device includes a pin shaft 6, the pin shaft 6 is simultaneously penetrated through the pin hole 1c and the second elongated hole 3c, and the pin shaft 6 limits the axial movement of the locking component 3 along the first elongated hole 1b. It should be noted that the pin hole 1c and the first elongated hole 1b are arranged at an angle, which means that the axial directions of the two are arranged at an angle. In a preferred example, the axial direction of the pin hole 1c is perpendicular to the axial direction of the first elongated hole 1b. Further, after the guide 3b is inserted into the first elongated hole 1b, the axial direction of the second elongated hole 3c is parallel to the axial direction of the pin hole 1c, and the second elongated hole 3c is aligned with the pin hole 1c, so that the pin shaft 6 can simultaneously penetrate the pin hole 1c and the second elongated hole 3c. After the pin hole 1c penetrates the pin hole 1c and the second long hole 3c at the same time, the axial position of the guide member 3b along the first long hole 1b is restricted, so that the guide member 3b can only move along the second direction, that is, the long axis direction of the first long hole 1b, and will not escape from the first long hole 1b.

[0052] Preferably, the osteotomy plate locking device further comprises a potential energy component; one end of the potential energy component is connected to the locking component 3, and the other end of the potential energy component is connected to the base 1; when the locking component 3 is not subjected to external force, the locking component 3 is in the first position; the potential energy component is configured to store potential energy during the movement of the locking component 3 from the first position to the second position; and release potential energy during the movement of the locking component 3 from the second position to the first position. The function of the potential energy component is to keep the locking component 3 in the first position when it is not subjected to external force, so as to ensure the continuous and reliable locking of the osteotomy plate 2 during the operation. On the other hand, when installing and replacing the osteotomy plate 2, the operator can easily unlock the osteotomy plate 2 by driving the locking component 3. In this process, the potential energy component can store potential energy. After completing the installation of the osteotomy plate 2, the operator only needs to let go, and the potential energy component can automatically push the locking component 3 to the first position to complete the locking by releasing its stored potential energy.

[0053] Please refer to Figure 6 , Figure 7 , and combined with reference Figure 1 and Figure 2 Optionally, the potential energy assembly includes an elastic member 4 and a fixing member 5; the base 1 has a tail hole 1d opened along the second direction; the elastic member 4 is inserted into the tail hole 1d and connected to the locking assembly 3; at least a portion of the fixing member 5 is inserted into the tail hole 1d and connected to the elastic member 4; the fixing member 5 is limited in axial displacement relative to the tail hole 1d. It should be noted that the combination of the elastic member 4 and the fixing member 5 is only a demonstration of the potential energy assembly and not a limitation of the potential energy assembly. In some other embodiments, the potential energy assembly can also store or release magnetic potential energy or gravitational potential energy. For example, when two magnets with the same poles facing each other approach each other under the action of an external force, the two generate repulsion and store potential energy. When the external force is removed, the potential energy is released, and the two repel each other and move away. Another example is the use of a heavy hammer to store or release gravitational potential energy. Those skilled in the art can understand and replace it according to the prior art, and the present invention is not limited to this.

[0054] In an exemplary embodiment, the tail hole 1d has an internal thread, and the fixing member 5 has an external thread 5c that matches the internal thread; the fixing member 5 is threadedly connected to the tail hole 1d. Optionally, the fixing member 5 has a force-applying feature 5b at one end away from the connection with the elastic member 4, such as a slot 5b, a cross slot, a hexagonal slot, or a hexagonal slot, which can be inserted into a common tool in the art and driven by force, so that the fixing member 5 can rotate under the drive of the tool. It should be understood that the threaded connection between the fixing member 5 and the tail hole 1d is only an exemplary example of the connection method between the two and is not a limitation on the connection method. For example, in some other embodiments, the fixing member 5 and the tail hole 1d can also be connected by interference fit, adhesive connection, pin connection, and other common connection methods in the art.

[0055] Preferably, Figure 6 As shown, the elastic member 4 is a spring, and the spring has two opposite end faces 4a and 4b perpendicular to the second direction, and the two end faces 4a and 4b are respectively abutted against the locking assembly 3 and the fixing member 5. Matchingly, one end of the fixing member 5 for abutting against the end face 4b has an abutting surface 5a. Of course, in some other embodiments, the elastic member 4 is not limited to a spring, and it can also be an elastic element such as a leaf spring or a disc spring.

[0056] For further information, please refer to Figure 5 The locking assembly 3 has a limiting groove 3d, and the limiting groove 3d is used to abut against the elastic member 4. The limiting groove 3d is preferably opened parallel to the second direction, such as a groove recessed on the guide member 3b, and the bottom of the groove is preferably a plane, which can be matched with an end face 4a of the spring to abut against, and at the same time, the end face 4a of the spring can be limited from slipping out of the groove.

[0057] Combine the following Figure 1 and Fig. 9 , the assembly process and use steps of the osteotomy plate locking device provided in this embodiment are exemplarily described.

[0058] Assembly process: First, insert the guide member 3b of the locking assembly 3 into the first long hole 1b of the base 1, and insert the pin 6 into the pin hole 1c until it enters the second long hole 3c; then insert the elastic member 4 into the tail hole 1d, and screw the fixing member 5 into the tail hole 1d to complete the assembly. At this time, the locking assembly 3 is initially in the first position under the elastic force of the elastic member 4.

[0059] Usage steps: push the locking assembly 3 to move to the second position, insert the locking teeth 2a of the osteotomy plate 2 into the locking grooves 1a of the base 1, release the locking assembly 3, and the locking assembly 3 returns to the first position under the elastic force of the elastic member 4, thereby locking the osteotomy plate 2. Then, the osteotomy plate 2 can be used as a guide base plate of the osteotomy tool to perform osteotomy. The specific osteotomy operation can refer to the prior art, and will not be described in detail in this embodiment.

[0060] In summary, the osteotomy plate locking device provided by the present invention includes: an osteotomy plate, a base and a locking assembly; the osteotomy plate is detachably connected to the base along a first direction; the locking assembly is movably connected to the base along a second direction that is angled with the first direction; the locking assembly moves between a first position and a second position along the second direction; when the locking assembly is in the first position, the relative position of the osteotomy plate and the base is locked; when the locking assembly is in the second position, the relative position of the osteotomy plate and the base is unlocked. With such a configuration, the osteotomy plate can be locked to the base through the locking assembly, ensuring that the osteotomy plate will not fall off the base during use, thereby improving intraoperative efficiency and reducing the risk of user injury.

[0061] It should be noted that the above embodiments can be combined with each other. The above description is only a description of the preferred embodiments of the present invention, and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure are within the scope of protection of the claims.

Claims

1. An osteotomy plate locking device, characterized in that: include: Osteotomy plates, bases, and locking components; The osteotomy plate is detachably connected to the base body along a first direction; The locking assembly is movably connected to the base along a second direction which is angled with the first direction; the locking assembly moves between a first position and a second position along the second direction; When the locking assembly is located at the first position, the relative positions of the osteotomy plate and the base are locked; When the locking assembly is located at the second position, the relative position of the osteotomy plate and the base is unlocked; The base body has a first elongated hole and a slot, the slot is opened along the first direction, and the long axis of the first elongated hole extends along the second direction; one end of the slot along the first direction is open, and the other end is closed; the osteotomy plate has a latching tooth adapted to the slot, the latching tooth is used to be engaged with the slot from the open end of the slot, and the closed end of the slot is used to abut against the osteotomy plate; after the latching tooth is engaged with the slot, the degrees of freedom except along the first direction are restricted by the slot; At least a portion of the locking assembly is movably inserted into the first elongated hole along the second direction, and is restricted by the first elongated hole to move along its short axis direction; the locking assembly comprises a pushing member and a guiding member connected to the pushing member, the pushing member has a friction feature, and the guiding member is used to be movably inserted into the first elongated hole; when the locking assembly is located at the first position, the pushing member is used to abut against the osteotomy plate to restrict the osteotomy plate from moving along the first direction, thereby locking the relative position of the osteotomy plate and the base; When the locking assembly is located at the second position, the push member releases the abutment against the osteotomy plate, allowing the osteotomy plate to move along the first direction and withdraw from the base; The osteotomy plate is replaceable.

2. The osteotomy plate locking device according to claim 1, characterized in that: The base has a pin hole, the pin hole is arranged at an angle with the first elongated hole, and the pin hole is connected with the first elongated hole; the guide member has a second elongated hole, and the major axis of the second elongated hole extends along the second direction; The osteotomy plate locking device comprises a pin shaft, which is simultaneously passed through the pin hole and the second elongated hole, and the pin shaft limits the axial movement of the locking component along the first elongated hole.

3. The osteotomy plate locking device according to claim 1, characterized in that: The osteotomy plate locking device also includes a potential energy component; One end of the potential energy component is connected to the locking component, and the other end of the potential energy component is connected to the base; When the locking assembly is not subjected to external force, the locking assembly is in the first position; The potential energy component is configured to store potential energy during the movement of the locking component from the first position to the second position; The potential energy is released during the movement of the locking assembly from the second position to the first position.

4. The osteotomy plate locking device according to claim 3, characterized in that: The potential energy component includes an elastic member and a fixing member; The base has a tail hole opened along the second direction; the elastic member is inserted into the tail hole and connected to the locking assembly; at least a portion of the fixing member is inserted into the tail hole and connected to the elastic member; the fixing member is restricted from axial displacement relative to the tail hole.

5. The osteotomy plate locking device according to claim 4, characterized in that: The tail hole has an internal thread, and the fixing piece has an external thread matched with the internal thread; the fixing piece is threadedly connected to the tail hole.

6. The osteotomy plate locking device according to claim 4, characterized in that: The elastic member is a spring having two opposite end surfaces perpendicular to the second direction, and the two end surfaces are respectively abutted against the locking assembly and the fixing member.

7. The osteotomy plate locking device according to claim 4, characterized in that: The locking assembly has a limiting groove, and the limiting groove is used for abutting connection with the elastic member.

Images