A fixture

Abstract

The application relates to the technical field of medical training devices, and provides a fixing device. The fixing device comprises a sliding rail assembly, two rotating plates, a fixing module, and a locking mechanism. The two rotating plates are slidably connected with the sliding rail assembly and can rotate relative to the sliding rail assembly, so that the two rotating plates can rotate relative to each other to approach or move away from each other. The fixing module comprises a base, a buckle and the locking mechanism, and the base is fixed to the rotating plate. The base has opposite first and second ends, and the side away from the rotating plate is recessed to form a bearing groove between the first and second ends. The fixing module is installed on each rotating plate. One end of the buckle is rotatably connected with the first end, and the other end is provided with continuous locking teeth and extends to the second end, so that the buckle and the bearing groove define an installation channel for placing a simulated leg bone. The locking mechanism is slidably installed at the second end and can slide between a locking position engaged with the locking teeth and an unlocking position disengaged from the locking teeth. The fixing device can be adapted to various simulated leg bones and adjust the posture of the simulated leg bones.

Description

Technical Field

[0001] This application relates to the field of medical training device technology, and more particularly to a fixing device. Background Technology

[0002] Knee orthopedic surgery requires high-precision bone cutting and prosthesis implantation, and surgeons typically improve their skills through simulation training. Currently, training often involves holding a simulated leg bone in a clamping device, allowing trainees to practice cutting and implanting the prosthesis on the simulated leg bone.

[0003] Existing simulated leg bones mainly fall into two categories: one is animal leg bones with soft tissue (muscles, tendons), whose surfaces are irregular and have flexible tissue; the other is artificially made leg bone models. Animal leg bones and leg bone models differ significantly in size and material. Traditional gripping devices have poor compatibility and are difficult to adapt to various types of simulated leg bones. Furthermore, the gripping devices are difficult to adjust the posture of the simulated leg bones, affecting the effectiveness of using the gripping devices for practice. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this application provides a fixing device.

[0005] This application provides a fixing device, including:

[0006] Slide rail assembly;

[0007] Both rotating plates are slidably connected to the slide rail assembly and can rotate relative to the slide rail assembly, so that the two rotating plates can rotate relative to each other to move closer to each other or further away from each other;

[0008] The fixing module includes a base, a buckle, and a locking mechanism fixed to the rotating plate; the base has a first end and a second end opposite to each other, and a bearing groove is recessed on the side facing away from the rotating plate, the bearing groove being between the first end and the second end, and the fixing module is installed on each of the rotating plates;

[0009] One end of the buckle is rotatably connected to the first end, and the other end is provided with continuous locking teeth and extends to the second end, so that the buckle and the bearing groove define an installation channel for placing the simulated leg bone; the locking mechanism is slidably mounted on the second end and can slide between a locking position engaged with the locking teeth and an unlocking position disengaged from the locking teeth.

[0010] Optionally, the buckle includes a main body and two engaging parts. The main body is rotatably connected to the first end, and the two engaging parts are connected to the side of the main body away from the first end. Each of the two engaging parts is provided with a locking tooth, and the locking mechanism can engage with the two engaging parts.

[0011] Optionally, the first end and the second end are arranged opposite to each other along a first direction, the mounting channel extends along a second direction, and the second end of the base is provided with a sliding channel extending along a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other;

[0012] The locking mechanism is slidably disposed within the sliding channel. The side of the buckle with the locking teeth is the snap-fit ​​end. The snap-fit ​​end is inserted into the sliding channel and placed between the locking mechanism and the inner wall of the sliding channel. A displacement structure is provided between the locking mechanism and the inner wall of the sliding channel.

[0013] When the locking mechanism moves along the sliding channel toward the direction close to the rotating plate, the locking mechanism moves along the first direction toward the snap-fit ​​end under the drive of the displacement structure to engage with the locking teeth;

[0014] When the locking mechanism moves along the sliding channel toward a direction away from the rotating plate, the locking mechanism moves away from the snap-fit ​​end along the first direction under the drive of the displacement structure to separate from the locking teeth.

[0015] Optionally, the displacement structure includes a sliding groove disposed on the sidewall of the sliding channel along the second direction;

[0016] The locking mechanism includes a locking member and a limiting block. The limiting block is disposed on one side of the locking member along the second direction. The locking member is slidably connected to the sliding channel, and the limiting block is slidably disposed in the sliding groove. A locking space is formed between the locking member and one side wall of the sliding channel along the first direction. The buckle is placed in the locking space, and the locking member has locking teeth on the side facing the locking space.

[0017] The sliding groove is inclined relative to the axis of the sliding channel. When the limiting block slides along the sliding groove toward the rotating plate, the locking member moves toward the snap-fit ​​end in the first direction so that the snap-fit ​​tooth engages with the locking tooth.

[0018] When the limiting block moves away from the rotating plate along the sliding groove, the locking member moves away from the snap-fit ​​end along the first direction, so that the snap-fit ​​tooth disengages from the locking tooth.

[0019] Optionally, the locking member is provided with limiting blocks on both sides along the second direction, and the sliding channel is provided with sliding grooves on both side walls along the second direction, with the two limiting blocks and the two sliding grooves respectively slidably connected.

[0020] Optionally, the sliding groove includes a plurality of sub-grooves, which are spaced apart along the third direction. Each sub-groove is inclined relative to the axis of the sliding channel, and the inclination direction and inclination angle of the plurality of sub-grooves relative to the axis of the sliding channel are the same.

[0021] The limiting block includes multiple sub-blocks spaced apart along the third direction, and the multiple sub-blocks are slidably connected to the multiple sub-grooves in a one-to-one correspondence.

[0022] Optionally, the sliding groove extends through the side wall of the mounting channel, and the locking mechanism further includes a pull rod connected to the limiting block, so that the pull rod can drive the limiting block to slide in the sliding groove.

[0023] Optionally, the pull rod includes a connecting rod and a handle. One end of the connecting rod is rotatably connected to the limiting block, and the other end is rotatably connected to the handle. The handle is rotatably connected to the second end and can rotate between a first position and a second position. When the handle is in the first position, the handle extends along the first direction, and the limiting block is located at the end of the sliding groove away from the rotating plate. When the handle is in the second position, the handle extends along the third direction, and the limiting block is located at the end of the sliding groove near the rotating plate.

[0024] Optionally, the slide rail assembly includes a slide rail and two sliders, both sliders being slidably connected to the slide rail, and two rotating plates being rotatably connected to the two sliders respectively, with the sliders being detachably connected to the slide rail.

[0025] Optionally, each of the rotating plates is provided with two fixing modules, the two fixing modules are spaced apart along the extension direction of the rotating plate, and the mounting channels of the two fixing modules are coaxially arranged.

[0026] The technical solution provided in this application has the following advantages compared with the prior art:

[0027] The fixation device provided in this application embodiment has two rotating plates mounted on a slide rail assembly. Each rotating plate is equipped with a fixing module, allowing the simulated leg bone to be connected to the two rotating plates via the fixing modules. The two rotating plates rotate relative to each other and slide along the slide rail assembly, thus adjusting the posture of the simulated leg bone. The fixing module includes a base, a buckle, and a locking mechanism. When the simulated leg bone needs to be fixed, the buckle is pressed down to cover the bearing groove, so that the buckle and the inner wall of the bearing groove abut against the surface of the simulated leg bone. Then, the locking mechanism engages with the locking teeth on the buckle, restricting the buckle's rotation relative to the base to fix the simulated leg bone. When the locking mechanism is in the unlocked position, the buckle can rotate relative to the base, thereby adjusting the size of the installation channel to accommodate different types of simulated leg bones, improving the compatibility of the fixation device. Through the cooperation of the slide rail assembly, the two rotating plates, and the fixing module, the fixation device can not only fix various types of simulated leg bones but also adjust their posture, improving the compatibility of the fixation device and the effectiveness of using it for surgical practice. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is one of the schematic diagrams illustrating the use of the fixing device described in the embodiments of this application;

[0031] Figure 2 This is a second schematic diagram illustrating the use of the fixing device described in the embodiments of this application;

[0032] Figure 3 This is a schematic diagram of the fixing device for installing an animal leg bone according to an embodiment of this application;

[0033] Figure 4 This is the third schematic diagram of the fixing device described in the embodiments of this application during use;

[0034] Figure 5 This is the fourth schematic diagram of the fixing device described in the embodiments of this application during use;

[0035] Figure 6 This is a schematic diagram of the fixed module structure described in an embodiment of this application;

[0036] Figure 7This is a schematic diagram of the handle of the fixing module in the first position according to an embodiment of this application;

[0037] Figure 8 This is a schematic diagram of the handle of the fixing module in the second position according to an embodiment of this application.

[0038] Among them, 11, slide rail; 12, slider; 13, rotating plate; 2, worktable; 3, fixed module; 31, base; 311, first end; 312, second end; 313, bearing groove; 32, buckle; 321, snap-fit ​​end; 322, locking tooth; 331, locking element; 332, limiting block; 333, pull rod; 334, connecting rod; 335, handle; 34, sliding channel; 35, sliding groove; 4, simulated leg bone; 5, surgical device. Detailed Implementation

[0039] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0040] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0041] Reference Figures 1 to 8 As shown, this application embodiment provides a fixing device, including a slide rail assembly, two rotating plates, and a fixing module 3; the two rotating plates 13 are both slidably connected to the slide rail assembly and can rotate relative to the slide rail assembly, so that the two rotating plates 13 can rotate relative to each other to move closer or further apart; the fixing module 3 includes a base 31 fixed to the rotating plate 13, a buckle 32, and a locking mechanism; the base 31 has a first end 311 and a second end 312 facing each other, and a bearing groove 3 is recessed on the side facing away from the rotating plate 13. 13. The bearing groove 313 is between the first end 311 and the second end 312, and a fixing module 3 is installed on each rotating plate 13; one end of the buckle 32 is rotatably connected to the first end 311, and the other end is provided with continuous locking teeth 322 and extends to the second end 312, so that the buckle 32 and the bearing groove 313 define an installation channel for placing the simulated leg bone 4; the locking mechanism is slidably installed on the second end 312 and can slide between the locking position engaged with the locking teeth 322 and the unlocking position disengaged from the locking teeth 322.

[0042] Specifically, the slide rail assembly consists of a slide rail 11 and a slider 12. The slide rail 11 is a long strip of metal track with sliding grooves on its surface. The slider 12 is a cuboid structure, and it slides in conjunction with the grooves of the slide rail 11 to achieve free movement along the length of the guide rail. The two rotating plates 13 are rectangular metal plates, and one end of each rotating plate 13 is rotatably connected to the slider 12 via a hinge. The two fixed modules 3 can be optionally installed on opposite sides of the two rotating plates 13 along the extension direction of the slide rail 11.

[0043] The base 31 of the fixed module 3 is a cuboid metal block with its first end 311 and second end 312 arranged opposite to each other along the length of the rotating plate 13. The top of the base 31 is recessed to form a U-shaped bearing groove 313. The bearing groove 313 passes through the base 31 along the length of the rotating plate 13. When the simulated leg bone 4 is placed in the bearing groove 313, the simulated leg bone 4 is arranged along the length of the rotating plate 13.

[0044] The buckle 32 can be an arc-shaped piece. One end of the buckle is rotatably connected to the first end 311 via a pin, and the other end is provided with continuous sawtooth-shaped locking teeth 322. The locking mechanism can be provided with a gap between itself and the second end 312. The end of the buckle with locking teeth 322 is placed in the gap, so that the buckle 32 and the groove of the bearing groove 313 are opposite to each other, so that the buckle 32 and the bearing groove 313 form an annular structure, and the interior of the annular structure forms an installation channel.

[0045] The locking mechanism can be a block structure with locking teeth. The block structure is slidably connected to the second end 312. When the block structure is close to the base 31, the locking teeth engage with the locking teeth 322 on the buckle 32 to restrict the buckle 32 from rotating relative to the base 31. When the block structure is away from the base 31, the locking teeth disengage from the locking teeth 322 on the buckle 32, allowing the buckle 32 to rotate relative to the base 31 to adjust the size of the installation channel.

[0046] When the buckle 32 rotates toward the second end 312 of the base 31, the cross-sectional size of the mounting channel gradually decreases. When the buckle 32 rotates toward the second end 312 away from the base 31, the cross-sectional size of the mounting channel gradually increases. That is, adjusting the position of the buckle 32 can adjust the size of the mounting channel, so that the mounting channel can be adapted to simulated leg bones 4 of different sizes.

[0047] The aforementioned locking teeth 322 are triangular protrusions, equidistantly arranged along the length of the engaging portion. The locking mechanism may optionally have protrusions that engage with the locking teeth 322; alternatively, the locking mechanism may have slots that engage with the locking teeth 322.

[0048] When the locking mechanism is in the locked position, the locking mechanism engages with the locking teeth 322 of the latch 32, and the latch 32 is limited and cannot rotate relative to the base 31, so the size of the installation channel remains stable. When the locking mechanism is in the unlocked position, the locking mechanism disengages from the locking teeth 322 of the latch 32, and the latch 32 can rotate relative to the base 31 to adjust the size of the installation channel, so that the installation channel can be adapted to simulated leg bones 4 of different sizes.

[0049] The two rotating plates 13 rotate relative to each other and can move closer or further apart. The simulated leg bone 4 typically includes two bone segments rotatably connected. The two bone segments are respectively mounted on the two rotating plates 13, with each bone segment passing through a mounting channel on the corresponding rotating plate 13. The inner walls of the buckle 32 and the bearing groove 313 abut against the outer surface of the bone segment, so that the fixing module 3 fixes the bone segment. The relative rotation of the two rotating plates 13, along with their relative rotation along the slide rail assembly, allows adjustment of the included angle between the two bone segments of the simulated leg bone 4, thereby adjusting the posture of the simulated leg bone 4. After the simulated leg bone 4 is fixed, the operator uses a surgical device 5 to cut or drill holes in the simulated leg bone 4 for practice. The surgical device 5 can be a cutting saw or a drill.

[0050] The fixing device provided in this application embodiment has two rotating plates 13 installed on the slide rail assembly. Each rotating plate 13 is provided with a fixing module 3, so that the simulated leg bone 4 can be connected to the two rotating plates 13 through the fixing module 3. The two rotating plates 13 rotate relative to each other and slide along the slide rail assembly, so that the posture of the simulated leg bone 4 can be adjusted. The fixing module 3 includes a base 31, a buckle 32 and a locking mechanism. When it is necessary to fix the simulated leg bone 4, the buckle 32 is pressed down to cover the bearing groove 313, so that the inner wall of the buckle 32 and the bearing groove 313 abuts against the surface of the simulated leg bone 4. Then, the locking mechanism engages with the locking teeth 322 on the buckle 32, so as to restrict the rotation of the buckle 32 relative to the base 31 to fix the simulated leg bone 4. When the locking mechanism is in the unlocked position, the buckle 32 can rotate relative to the base 31, thereby adjusting the size of the installation channel to adapt to different types of simulated leg bones 4 and improve the compatibility of the fixing device. Through the cooperation of the slide rail assembly, the two rotating plates 13 and the fixing module 3, the fixing device can not only be adapted to fix various types of simulated leg bones 4, but also adjust the posture of the simulated leg bones 4, thereby improving the compatibility of the fixing device and the effectiveness of using the fixing device for surgical practice.

[0051] Reference Figures 1 to 5 As shown, in some embodiments, the buckle 32 includes a main body and two latching parts. The main body is rotatably connected to the first end 311, and the two latching parts are connected to the side of the main body away from the first end 311. Each of the two latching parts is provided with locking teeth 322, and the locking mechanism can engage with the two latching parts.

[0052] This configuration, with the two double-locking parts engaging with the locking mechanism, increases the connection points between the buckle 32 and the locking mechanism, enhancing the stability of the clamping and preventing wobbling when cutting the simulated leg bone 4.

[0053] Specifically, the main body of the buckle 32 is an arc-shaped metal plate, one end of which is rotatably connected to the first end 311 of the base 31, and the other end is connected to two snap-fit ​​parts. The two snap-fit ​​parts are spaced apart along the axial direction of the installation channel. The surface of the snap-fit ​​parts is provided with continuous locking teeth 322. The locking mechanism is provided with a matching structure corresponding to the two snap-fit ​​parts, so that when the two snap-fit ​​parts abut against the matching structure, the locking mechanism engages with the two snap-fit ​​parts.

[0054] Reference Figures 1 to 5 As shown, in some embodiments, the first end 311 and the second end 312 are arranged opposite each other along a first direction, the mounting channel extends along a second direction, and the second end 312 of the base 31 is provided with a sliding channel 34 extending along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other. The locking mechanism is slidably disposed in the sliding channel 34. The side of the buckle 32 with the locking teeth 322 is the snap-fit ​​end 321. The snap-fit ​​end 321 is inserted into the sliding channel 34 and is placed between the locking mechanism and the inner wall of the sliding channel 34. A displacement structure is provided between the locking mechanism and the inner wall of the sliding channel 34. When the locking mechanism moves along the sliding channel 34 toward the direction close to the rotating plate 13, the locking mechanism moves along the first direction toward the snap-fit ​​end 321 under the drive of the displacement structure to engage with the locking teeth 322. When the locking mechanism moves along the sliding channel 34 toward the direction away from the rotating plate 13, the locking mechanism moves away from the snap-fit ​​end 321 along the first direction under the drive of the displacement structure to separate from the locking teeth 322.

[0055] This configuration ensures that when the locking mechanism moves toward the rotating plate 13, it can be displaced along the first direction under the drive of the displacement structure to engage with the locking teeth 322. The sliding force of the locking mechanism toward the rotating plate 13 is applied to the latch 32 through the locking teeth 322, causing the latch 32 to tend to rotate toward the second end 312 under the action of the force, so that the latch 32 can tightly abut against the surface of the simulated leg bone 4 in the installation channel. While the locking mechanism engages with the locking teeth 322, the latch 32 is tightened to stably fix the simulated leg bone by cooperating with the base 31.

[0056] Specifically, the first direction is consistent with the width direction of the rotating plate 13, the second direction is consistent with the length direction of the rotating plate, and the third direction is consistent with the thickness direction of the rotating plate 13. It is possible to provide through holes on the base 31 as sliding channels 34, with the through holes and the slots of the bearing groove 313 spaced apart along the first direction; alternatively, a frame structure can be provided at the second end of the base 31, with the frame structure being hollow to form the sliding channel 34.

[0057] The locking mechanism is slidably disposed within the sliding channel 34, and the locking mechanism can be spaced apart from the inner wall of the sliding channel 34 along the first direction near the bearing groove 313 to form a snap-fit ​​space, and the snap-fit ​​end 321 is inserted into the snap-fit ​​space; when the locking mechanism moves towards the bearing groove 313 along the first direction, the locking mechanism can abut against the snap-fit ​​end 321 to engage with the locking teeth 322; when the locking mechanism moves away from the bearing groove 313 along the first direction, the locking mechanism can disengage from the snap-fit ​​end 321, so that the buckle 32 can automatically rotate relative to the base 31.

[0058] Alternatively, the locking mechanism and the sliding channel 34 can be spaced apart along the inner wall of the side away from the bearing groove 313 in the first direction to form a snap-fit ​​space, with the snap-fit ​​end 321 located within the snap-fit ​​space. When the locking mechanism moves away from the bearing groove 313 in the first direction, the locking mechanism can abut against the snap-fit ​​end 321 to engage with the locking teeth 322. When the locking mechanism moves towards the bearing groove 313 in the first direction, the locking mechanism can disengage from the snap-fit ​​end 321, allowing the buckle 32 to rotate freely relative to the base 31.

[0059] The aforementioned displacement structure can be configured as follows: a sliding groove 35 is provided on the side wall of the sliding channel 34 along the second direction. The sliding groove 35 is inclined relative to the axis of the sliding channel 34 along the first direction. A limiting block 332 is provided on the locking mechanism and is disposed in the sliding groove 35. When the locking mechanism slides in the sliding channel 34, the limiting block 332 slides in the sliding groove 35. Due to the inclined arrangement of the sliding groove 35, the sliding of the limiting block 332 along the sliding groove 35 will cause the locking mechanism to generate displacement in the sliding channel 34 along the first direction. The sliding groove 35 enables the locking mechanism to move along the first direction and engage with the locking teeth 322 when it slides toward the rotating plate 13. The force of the locking mechanism sliding toward the rotating plate 13 is applied to the buckle 32 through the locking teeth 322, causing the buckle 32 to have a tendency to rotate toward the second end 312 under the action of the force, so that the buckle 32 can tightly abut against the surface of the simulated leg bone 4 in the installation channel.

[0060] Alternatively, the displacement structure can be a protrusion provided on one side of the inner wall of the sliding channel 34 along the first direction. The protrusion has an inclined surface. In the first direction near the rotating plate 13, the distance between the inclined surface and the inner wall of the sliding channel 34 gradually increases, so that when the locking mechanism slides toward the rotating plate 13 in the sliding channel 34, the locking mechanism abuts against the inclined surface and slides along the inclined surface, so that the locking mechanism generates displacement in the first direction.

[0061] Reference Figures 5 to 8As shown, in some embodiments, the displacement structure includes a sliding groove 35 disposed on the side wall of the sliding channel 34 along the second direction; the locking mechanism includes a locking member 331 and a limiting block 332, the limiting block 332 being disposed on one side of the locking member 331 along the second direction, the locking member 331 being slidably connected to the sliding channel 34, and the limiting block 332 being slidably disposed within the sliding groove 35, a snap-fit ​​space being formed between the locking member 331 and one side wall of the sliding channel 34 along the first direction, and the buckle 32 being placed in the snap-fit ​​space. Within the space, the locking member 331 has a locking tooth on the side facing the locking space; the sliding groove 35 is inclined relative to the axis of the sliding channel 34. When the limiting block 332 slides along the sliding groove 35 toward the rotating plate 13, the locking member 331 moves toward the locking end 321 in the first direction so that the locking tooth engages with the locking tooth 322; when the limiting block 332 moves away from the rotating plate 13 along the sliding groove 35, the locking member 331 moves away from the locking end 321 in the first direction so that the locking tooth disengages from the locking tooth 322.

[0062] With this configuration, when the operator pushes the locking member 331 to move along the sliding channel 34, the limiting block 332 slides along the inclined sliding groove 35, so as to convert the movement along the third direction into the displacement along the first direction, thus conveniently realizing the engagement or disengagement of the locking member 331 and the locking tooth 322.

[0063] Specifically, the inclination direction of the sliding groove 35 can be selected to form an angle of 30°-60° with the axis of the sliding channel 34. The locking mechanism consists of a locking element 331 and a limiting block 332. The locking element 331 is a cuboid metal block with limiting blocks 332 welded on both sides. The limiting blocks 332 are cylindrical protrusions and are embedded in the sliding groove 35.

[0064] The locking member 331 has multiple rows of equidistant triangular protrusions on the side facing the buckle 32 as locking teeth, which match the locking teeth 322 of the locking part.

[0065] The inclined design of the sliding groove 35 causes the limiting block 332 to move along the sliding groove 35 when the locking member 331 slides downward along the sliding channel 34 (in the direction close to the rotating plate 13), forcing the locking member 331 to move horizontally towards the snap-fit ​​end 321 in the first direction, and the snap-fit ​​teeth and locking teeth 322 engage; conversely, when sliding upward, the locking member 331 moves horizontally away from the snap-fit ​​32 in the first direction, causing the snap-fit ​​teeth and locking teeth to disengage.

[0066] The sliding groove 35 can be configured to include two groove segments. The first groove segment is located on the side of the second groove segment facing away from the rotating plate 13. The first groove segment is inclined to the axis of the sliding channel 34, and the second groove segment is parallel to the axis of the sliding channel 34.

[0067] The inner wall of the sliding channel 34 along the first direction near the bearing groove 313 is the first wall, and the inner wall away from the bearing groove 313 is the second wall. When the locking member 331 forms a locking space with the first wall, the distance between the sliding groove 35 and the first wall along the second direction gradually decreases in the direction along the third direction near the rotating plate 13. When the locking member 331 forms a locking space with the second wall, the distance between the sliding groove 35 and the second wall along the second direction gradually decreases in the direction along the third direction near the rotating plate 13.

[0068] Reference Figures 5 to 8 As shown, in some embodiments, the locking member 331 is provided with limiting blocks 332 on both sides along the second direction, and the sliding channel 34 is provided with sliding grooves 35 on both sides along the second direction. The two limiting blocks 332 and the two sliding grooves 35 are slidably connected respectively.

[0069] With this configuration, the two limiting blocks 332 and the two sliding grooves 35 cooperate with each other, so that when the locking member 331 slides in the sliding channel 34, the locking member 331 is subjected to force on both sides along the second direction and maintains balance, thus avoiding the locking member 331 being subjected to force on one side and causing displacement in the sliding channel 34.

[0070] Specifically, two sliding grooves 35 can be symmetrically arranged on both sides of the sliding channel 34 along the second direction. The inclination angles of the two sliding grooves 35 are equal, so that when the locking member 331 slides in the sliding channel 34, the limiting block 332 moves synchronously along the sliding groove 35, ensuring that the locking member 331 is subjected to balanced forces on both sides when it moves horizontally.

[0071] Reference Figures 5 to 8 As shown, the sliding groove 35 includes multiple sub-grooves, which are spaced apart along a third direction. Each sub-groove is inclined relative to the axis of the sliding channel 34, and the inclination direction and inclination angle of the multiple sub-grooves relative to the axis of the sliding channel 34 are the same. The limiting block 332 includes multiple sub-blocks spaced apart along a third direction, and the multiple sub-blocks are slidably connected to the multiple sub-grooves one by one.

[0072] With this configuration, multiple sub-grooves and multiple sub-blocks correspond to each other, so that the locking member 331 and the displacement structure have multiple contact points, which improves the stability of the locking member 331 when it generates displacement in the first direction, and distributes the force of the locking member 331 to multiple contact points, reducing the wear of a single sub-grooves.

[0073] Specifically, the sliding groove 35 can be selected to include two sub-grooves, which are arranged at intervals along a third direction, and the inclination angle of each sub-groove is the same. The limiting block 332 includes two sub-blocks, each of which is cylindrical and is embedded in the corresponding sub-groove.

[0074] Reference Figures 5 to 8As shown, in some embodiments, the sliding groove 35 penetrates the side wall of the installation channel, and the locking mechanism also includes a pull rod 333, which is connected to the limiting block 332 so that the pull rod 333 can drive the limiting block 332 to slide in the sliding groove 35.

[0075] With this configuration, the sliding of the limit block 332 can be directly controlled by the external pull rod 333, and the operator does not need to contact the locking part 331, which simplifies the unlocking / locking operation and avoids the inconvenience caused by limited operating space during surgical training.

[0076] Specifically, the sliding groove 35 penetrates the side wall of the base 31, forming a through groove. A pull rod 333 is added to the locking mechanism. The pull rod 333 can be an L-shaped metal rod, one end of which is connected to the limiting block 332 via a hinge, and the other end extends to the outside of the base 31. The operator can hold the pull rod 333 to pull the locking member 331; when the operator pulls the pull rod 333 towards the rotating plate 13, the limiting block 332 moves along the sliding groove 35 towards the rotating plate 13, and the locking member 331 engages with the locking teeth 322. When the operator pushes the pull rod 333 away from the rotating plate 13, the limiting block 332 moves away from the rotating plate 13, and the locking member 331 disengages from the locking teeth 322.

[0077] Reference Figures 5 to 8 As shown, in some embodiments, the pull rod 333 includes a connecting rod 334 and a handle 335. One end of the connecting rod 334 is rotatably connected to the limiting block 332, and the other end is rotatably connected to the handle 335. The handle 335 is rotatably connected to the second end 312 and can rotate between a first position and a second position. When the handle 335 is in the first position, the handle 335 extends along a first direction, and the limiting block 332 is at the end of the sliding groove 35 away from the rotating plate 13. When the handle 335 is in the second position, the handle 335 extends along a third direction, and the limiting block 332 is at the end of the sliding groove 35 near the rotating plate 13.

[0078] With this configuration, rotating the handle 335 will drive the connecting rod 334 to move in the third direction, making it convenient for the operator to drive the locking member 331 to slide in the sliding channel 34.

[0079] Specifically, the connecting rod 334 can be a curved rod. One end of the connecting rod 334 is rotatably connected to the limiting block 332, and the other end extends to the edge of the rotating plate 13 and is rotatably connected to the handle 335. When the handle 335 rotates around the second end 312, it can drive the connecting rod 334 to generate displacement in the third direction.

[0080] The connection point between the connecting rod 334 and the handle 335 is the first point. During the process of the handle 335 rotating from the first position to the second position, the handle drives the connecting rod 334 to rotate, so that the first point gradually moves toward the rotating plate 13, and the limiting block 332 moves to the end of the sliding groove 35 close to the rotating plate 13, so that the locking member 331 engages with the locking tooth 322.

[0081] When the handle 335 is in the first position, it is attached to the side of the second end 312 of the base 31, and the locking member is in the unlocked position. When the handle 335 is rotated to the second position perpendicular to the first direction, the connecting rod 334 pushes the limiting block 332 to move along the sliding groove 35 to the locked position. When the handle 335 is rotated in the opposite direction to the first position, the limiting block 332 is reset to the unlocked position.

[0082] Reference Figures 1 to 5 As shown, in some embodiments, the slide rail assembly includes a slide rail 11 and two sliders 12, both sliders 12 being slidably connected to the slide rail 11, and two rotating plates 13 being rotatably connected to the two sliders 12 respectively, with the sliders 12 being detachably connected to the slide rail 11.

[0083] With this configuration, the slider 12 and the slide rail 11 are detachably connected, and the number of rotating plates 13 can be flexibly configured according to the shape of the simulated leg bone 4 and the posture to be simulated.

[0084] Specifically, the slide rail 11 may be provided with a through groove, and the slider 12 is slidably connected in the through groove. The slider 12 can slide out of the through groove from the end of the slide rail 11 to realize the detachable connection between the slider 12 and the slide rail 11.

[0085] The simulated leg bone 4 includes two rotatably connected bone components. Two sliders 12 can be mounted on the slide rail 11. The two bone components are connected to fixed modules 3 on two rotating plates 13. By adjusting the angle and distance between the two rotating plates 13, the angle between the two bone components can be adjusted to simulate different knee joint postures, for example... Figure 1 To simulate the state of the knee joint when the leg is bent, Figure 2 To simulate the condition of the knee joint when the leg is bent at a greater degree, Figure 5 This is to simulate the knee joint when the leg is flat.

[0086] Alternatively, one slider 12 can be installed on slide rail 11 to simulate one bone of leg bone 4 connected to fixed module 3, rotating plate 13 parallel to worktable 2, and the other bone hanging naturally at the edge of worktable 2 to simulate the knee joint in a sitting position, for example. Figure 4 As shown. Or as... Figure 3 As shown, when the simulated leg bone 4 is a single bone, the single bone is connected to the fixed module 3. Adjust the angle between the rotating plate 13 and the worktable 2 to find a suitable angle. The single bone can be an animal leg bone.

[0087] The fixing device also includes a worktable 2, which is a rectangular metal platform. The slide rail 11 is fixed to the worktable 2 by bolts, and one end of the slide rail 11 is located at the edge of the worktable 2; the worktable 2 can enhance the stability of the slide rail assembly during use.

[0088] Reference Figures 1 to 5 As shown, in some embodiments, each rotating plate 13 is provided with two fixing modules 3, the two fixing modules 3 are spaced apart along the extension direction of the rotating plate 13, and the mounting channels of the two fixing modules 3 are coaxially arranged.

[0089] With this setup, the two fixed modules 3 work together to clamp the simulated leg bone 4, preventing the bone segment from rotating around a single point during the cutting operation, avoiding displacement of the simulated leg bone 4, and improving cutting accuracy.

[0090] Specifically, two fixing modules 3 are fixed at intervals along the length of each rotating plate 13. The bearing grooves 313 of the two fixing modules 3 are coaxially arranged, and their axes are parallel to the rotation axis of the rotating plate 13. The simulated leg bone 4 is inserted into the installation channel of the two fixing modules 3, and the long bone model is stably clamped by synchronously adjusting the locking degree of the two buckles 32.

[0091] Of the two fixing modules 3 mentioned above, the dimensions of the base 31 and the buckle 32 of one fixing module 3 can be larger than the dimensions of the base 31 and the buckle 32 of the other fixing module 3.

[0092] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0093] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fixing device, characterized in that, include: Slide rail assembly; Both rotating plates (13) are slidably connected to the slide rail assembly and can rotate relative to the slide rail assembly so that the two rotating plates (13) can rotate relative to each other to move closer or further apart; The fixing module (3) includes a base (31), a buckle (32) and a locking mechanism fixed on the rotating plate (13); the base (31) has a first end (311) and a second end (312) opposite to each other, and a bearing groove (313) is recessed on the side facing away from the rotating plate (13), the bearing groove (313) is between the first end (311) and the second end (312), and the fixing module (3) is installed on each of the rotating plates (13); One end of the buckle (32) is rotatably connected to the first end (311), and the other end is provided with continuous locking teeth (322) and extends to the second end (312) so that the buckle (32) and the bearing groove (313) define an installation channel for placing the simulated leg bone (4); the locking mechanism is slidably mounted on the second end (312) and can slide between a locked position engaged with the locking teeth (322) and an unlocked position disengaged from the locking teeth (322).

2. The fixing device according to claim 1, characterized in that, The buckle (32) includes a main body and two latching parts. The main body is rotatably connected to the first end (311). The two latching parts are connected to the side of the main body away from the first end (311). The two latching parts are provided with locking teeth (322). The locking mechanism can engage with the two latching parts.

3. The fixing device according to claim 1, characterized in that, The first end (311) and the second end (312) are arranged opposite each other along a first direction, the mounting channel extends along a second direction, and the second end (312) of the base (31) is provided with a sliding channel (34) extending along a third direction. The first direction, the second direction and the third direction are perpendicular to each other. The locking mechanism is slidably disposed in the sliding channel (34). The buckle (32) has a locking end (321) on one side with the locking teeth (322). The locking end (321) is inserted into the sliding channel (34) and placed between the locking mechanism and the inner wall of the sliding channel (34). A displacement structure is provided between the locking mechanism and the inner wall of the sliding channel (34). When the locking mechanism moves along the sliding channel (34) toward the direction close to the rotating plate (13), the locking mechanism moves along the first direction toward the snap-fit ​​end (321) under the drive of the displacement structure to engage with the locking tooth (322); When the locking mechanism moves along the sliding channel (34) toward a direction away from the rotating plate (13), the locking mechanism moves away from the snap-fit ​​end (321) along the first direction under the drive of the displacement structure to separate from the locking tooth (322).

4. The fixing device according to claim 3, characterized in that, The displacement structure includes a sliding groove (35) disposed on the side wall of the sliding channel (34) along the second direction; The locking mechanism includes a locking member (331) and a limiting block (332). The limiting block (332) is disposed on one side of the locking member (331) along the second direction. The locking member (331) is slidably connected to the sliding channel (34), and the limiting block (332) is slidably disposed in the sliding groove (35). A snap-fit ​​space is formed between the locking member (331) and one side wall of the sliding channel (34) along the first direction. The buckle (32) is placed in the snap-fit ​​space. The locking member (331) has a snap tooth on the side facing the snap-fit ​​space. The sliding groove (35) is inclined relative to the axis of the sliding channel (34). When the limiting block (332) slides along the sliding groove (35) toward the rotating plate (13), the locking member (331) moves along the first direction toward the snap-fit ​​end (321) so that the snap-fit ​​tooth engages with the locking tooth (322). When the limiting block (332) moves away from the rotating plate (13) along the sliding groove (35), the locking member (331) moves away from the snap-fit ​​end (321) along the first direction so that the snap-fit ​​tooth disengages from the locking tooth (322).

5. The fixing device according to claim 4, characterized in that, The locking member (331) is provided with limiting blocks (332) on both sides along the second direction, and the sliding channel (34) is provided with sliding grooves (35) on both sides along the second direction. The two limiting blocks (332) and the two sliding grooves (35) are slidably connected respectively.

6. The fixing device according to claim 4, characterized in that, The sliding groove (35) includes a plurality of sub-grooves, which are spaced apart along the third direction. Each sub-grooves is inclined relative to the axis of the sliding channel (34), and the inclination direction and inclination angle of the plurality of sub-grooves relative to the axis of the sliding channel (34) are the same. The limiting block (332) includes a plurality of sub-blocks spaced apart along the third direction, and the plurality of sub-blocks are slidably connected to the plurality of sub-grooves in a one-to-one correspondence.

7. The fixing device according to claim 6, characterized in that, The sliding groove (35) penetrates the side wall of the installation channel. The locking mechanism also includes a pull rod (333), which is connected to the limiting block (332) so that the pull rod (333) can drive the limiting block (332) to slide in the sliding groove (35).

8. The fixing device according to claim 7, characterized in that, The pull rod (333) includes a connecting rod (334) and a handle (335). One end of the connecting rod (334) is rotatably connected to the limiting block (332), and the other end is rotatably connected to the handle (335). The handle (335) is rotatably connected to the second end (312) and can rotate between a first position and a second position. When the handle (335) is in the first position, the handle (335) extends along the first direction. The limiting block (332) is located at the end of the sliding groove (35) away from the rotating plate (13). When the handle (335) is in the second position, the handle (335) extends along the third direction. The limiting block (332) is located at the end of the sliding groove (35) near the rotating plate (13).

9. The fixing device according to claim 1, characterized in that, The slide rail assembly includes a slide rail (11) and two sliders (12). Both sliders (12) are slidably connected to the slide rail (11). Two rotating plates (13) are rotatably connected to the two sliders (12). The sliders (12) are detachably connected to the slide rail (11).

10. The fixing device according to claim 1, characterized in that, Each of the rotating plates (13) is provided with two fixing modules (3), the two fixing modules (3) are spaced apart along the extension direction of the rotating plate (13), and the mounting channels of the two fixing modules (3) are coaxially arranged.

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