A demonstration support frame for prosthetic bone operation in knee replacement surgery

Abstract

This application relates to a demonstration support frame for prosthetic bone manipulation in knee replacement surgery, belonging to the technical field of educational or demonstration equipment. The support frame includes a base, on which are respectively provided a fixed column and a sliding column. The lower end of the fixed column is fixed to the base, and the lower end of the sliding column is slidably disposed on the base and can reciprocate toward the fixed column. A first clamping member for holding a femoral or tibial model is provided on the fixed column. One end of the first clamping member is rotatably connected to the fixed column, and a first locking member is provided between them. The other end of the first clamping member faces the sliding column. A second clamping member for holding a femoral or tibial model is provided on the fixed column. One end of the second clamping member is rotatably connected to the sliding column, and a second locking member is provided between them. The other end of the second clamping member faces the fixed column. The support frame of this application is very convenient to use and has good adjustability.

Description

Technical Field

[0001] This application relates to the field of educational or demonstration equipment technology, and in particular to a knee replacement surgery prosthetic bone operation demonstration support frame. Background Technology

[0002] The human knee joint, composed of the lower end of the femur, the upper end of the tibia, and the patella, is the largest and most complex joint in the human body, belonging to the trochlear joint category. As a crucial weight-bearing joint of the lower limbs, knee-related injuries and diseases are quite common. Statistics show that the incidence of symptomatic knee osteoarthritis in men over 50 years of age is 35%, and as high as 74% in women. Knee-related injuries and diseases can affect a person's walking ability and ability to perform daily activities. Currently, an increasing number of patients with severe knee osteoarthritis require total knee replacement surgery. Knee replacement surgery can relieve knee pain, improve knee function, and correct knee deformities, thus benefiting patients.

[0003] Artificial bone demonstrations are one of the most effective, cost-efficient, convenient, and widely used preoperative simulation methods for knee surgery. Operators can use artificial bone demonstrations to verify the practicality and effectiveness of surgical instruments; companies can use them to promote related surgical instruments and products; doctors can use them to practice using surgical instruments; and artificial bone demonstrations can be used for teaching and training.

[0004] Traditional prosthetic bone demonstration platforms use a clamping tool, similar to a bench vise, fixed to the table to stabilize the tibia or femur. This requires first securing the clamping tool to the table, a cumbersome process. Furthermore, one clamping tool cannot simultaneously stabilize both the tibia and femur, often necessitating an assistant to hold the other prosthetic bone steady. Because the inability to simultaneously lock both the tibia and femur means that during tibia cutting, the tibia must be clamped, and during femur cutting, the femur must be switched, making the entire process cumbersome. Even when using two clamping tools to hold and stabilize the tibia and femur separately, the knee joint cannot be freely positioned and paused at any angle of flexion and extension, again requiring an assistant's assistance for adjustment, which is inconvenient. Summary of the Invention

[0005] To improve the convenience and adjustability of tibial and femoral bone installation in knee replacement surgery demonstrations, this application provides a knee replacement surgery prosthesis operation demonstration support frame.

[0006] The knee replacement surgery artificial bone operation demonstration support frame provided in this application adopts the following technical solution:

[0007] A knee replacement surgery artificial bone operation demonstration support frame includes a base, on which a fixed column and a sliding column are respectively provided. The fixed column and the sliding column are arranged at intervals relative to each other. The lower end of the fixed column is fixed to the base, and the lower end of the sliding column is slidably arranged on the base and can reciprocate toward the fixed column.

[0008] The fixed column is provided with a first clamping member for clamping the skeletal model or the tibial model. One end of the first clamping member is rotatably connected to the fixed column and a first locking member is provided between the two. The other end of the first clamping member faces the sliding column.

[0009] The sliding column is provided with a second clamping member for clamping the tibia model or femur model. One end of the second clamping member is rotatably connected to the sliding column and a second locking member is provided between them. The other end of the second clamping member faces the fixed column.

[0010] By adopting the above technical solution, the entire base can be placed directly on a table or tabletop. One of the first clamping member and the second clamping member is used to place the femoral model, and the other is used to place the tibia model. For example, the femoral model can be placed on the first clamping member and clamped and fixed, and the tibia model can be placed on the second clamping member and clamped and fixed. The first clamping member on the fixed column and the femoral model remain in the horizontal direction. The sliding column can drive the second clamping member and the tibia model to move horizontally toward the femoral model, thereby adjusting the distance between the tibia model and the femoral model.

[0011] The entire support frame can be conveniently placed on a table without installation or fixation, making it very easy to use. The first and second clamps can simultaneously fix the tibia and femur models, enabling demonstrations without the need for assistance. No replacement is required when cutting the tibia and femur models, making it quick and easy. Furthermore, the sliding column can be moved as needed to adjust the gap between the tibia and femur models. In this application, the first and second clamps can swing up and down, allowing for arbitrary placement and stopping of the knee joint at various flexion and extension angles, thus meeting diverse demonstration needs.

[0012] Optionally, the first clamping member includes a first connecting rod and a first support plate for supporting and fixing the tibia model or femur model. A first connecting pin is installed at one end of the first connecting rod, and the first connecting pin is rotatably inserted into the upper end of the fixed column. The first locking member is disposed at the upper end of the fixed column and can abut against the first connecting pin. The first support plate is disposed at the other end of the first connecting rod.

[0013] By adopting the above technical solution, the tibial model or femoral model is placed on the first support plate. Then, by rotating the first connecting pin on the fixed column, the pitch angle of the first support plate can be adjusted, and it can be fixed and locked by the first locking member, thereby realizing the micro-adjustment of the knee joint gap and showing the free flexion and extension angle changes of the knee joint.

[0014] Optionally, the upper end of the fixed column is provided with a first mounting groove, which penetrates through the two opposite sides of the upper end of the fixed column; one end of the first connecting rod is embedded in the first mounting groove, and the end of the first connecting rod embedded in the first mounting groove is provided with a first connecting pin; the upper end of the fixed column is provided with a first connecting pin hole, which penetrates through the other two opposite sides of the upper end of the fixed column, and the first connecting pin hole communicates with the first mounting groove; the two ends of the first connecting pin are respectively rotatably inserted into the first connecting pin holes on both sides of the first mounting groove.

[0015] By adopting the above technical solution, the rotational connection of the first connecting rod is achieved. The whole structure is compact and reliable, easy to install and adjust, and will not cause any movement interference.

[0016] Optionally, the end of the first connecting rod connected to the first support plate is bent upward, and the first connecting rod and the first support plate are fixedly connected or integrally formed; the first support plate has a first support plane for supporting the tibia model or femur model; both sides of the first support plate have upwardly extending first limiting plates, and the first limiting plates are provided with a plurality of first positioning holes, which are used to fix the insertion pins.

[0017] By adopting the above technical solution, the tibia model or femur model is placed on the first support plane of the first support plate, and a pin is inserted into the first positioning hole of the first limiting plate. The tip of the pin is inserted into the tibia model or femur model to fix the tibia model or femur model.

[0018] Optionally, the second clamping member includes a second connecting rod and a second support plate for supporting and fixing the tibia model or femur model. A second connecting pin is installed at one end of the second connecting rod, and the second connecting pin is rotatably inserted into the upper end of the sliding column. The second locking member is disposed at the upper end of the sliding column and can abut against the second connecting pin. The second support plate is disposed at the other end of the second connecting rod.

[0019] By adopting the above technical solution, the tibial model or femoral model is placed on the second support plate. Then, by rotating the second connecting pin on the sliding column, the pitch angle of the second support plate can be adjusted, and it can be fixed and locked by the second locking member, thereby realizing the micro-adjustment of the knee joint gap and showing the free flexion and extension angle changes of the knee joint.

[0020] Optionally, the upper end of the sliding column is provided with a second mounting groove, which extends through the opposite sides of the upper end of the sliding column; one end of the second connecting rod is embedded in the second mounting groove, and the end of the second connecting rod embedded in the second mounting groove is provided with a second connecting pin; the upper end of the sliding column is provided with a second connecting pin hole, which extends through the other opposite sides of the upper end of the sliding column, and the second connecting pin hole communicates with the second mounting groove; the two ends of the second connecting pin are respectively rotatably inserted into the second connecting pin holes on both sides of the second mounting groove.

[0021] By adopting the above technical solution, the rotational connection of the second connecting rod is achieved. The whole structure is compact and reliable, easy to install and adjust, and will not cause any movement interference.

[0022] Optionally, a connecting arm is connected to the end of the second connecting rod away from the sliding column. One end of the connecting arm has a connecting hole, and the connecting arm is rotatably sleeved on the end of the second connecting rod through the connecting hole. The connecting arm is also provided with a third locking member that can lock the connecting arm and the second connecting rod. The other end of the connecting arm is fixedly connected to the second support plate or the two are integrally formed. The second support plate has a second support plane for supporting the tibia model or femur model. Both sides of the second support plate have upwardly extending second limiting plates, and the second limiting plates are provided with a plurality of second positioning holes, which are also used to fix the insertion pins.

[0023] By adopting the above technical solution, a tibial or femoral model is placed on the second support plane of the second support plate. A pin is inserted into the second positioning hole of the second limiting plate, with the tip of the pin inserted into the tibial or femoral model to fix it. In this application, the different internal and external rotation angles of the knee joint prosthetic model can also be adjusted by swinging the connecting arm.

[0024] Optionally, the bottom surfaces of the first and second support plates are provided with a plurality of screw through holes, and support screws for supporting the bottom of the tibia model or femur model are screwed into the screw through holes.

[0025] By adopting the above technical solution, according to the position of the tibia model or femur model placed on the first support plate and the second support plate, select appropriate screw through holes, screw the support screws into the corresponding screw through holes, and adjust the appropriate height. Use the support screws to support and fix the bottom of the tibia model or femur model, thereby ensuring the stability and reliability of the installation of the tibia model and femur model.

[0026] Optionally, the base includes a first support longitudinal rod and a second support longitudinal rod arranged in parallel at intervals, and a support crossbar is provided between the first support longitudinal rod and the second support longitudinal rod. One end of the support crossbar is slidably connected to the first support longitudinal rod, and the other end of the support crossbar is slidably connected to the second support longitudinal rod. The support crossbar can reciprocate along the length direction of the first support longitudinal rod and the second support longitudinal rod. Both the fixed column and the sliding column are provided on the support crossbar.

[0027] By adopting the above technical solution, the first and second support rods are usually set along the width of the tabletop. The support crossbar can be adjusted to position on the first and second support rods. Through the free sliding function of the support crossbar, the tibia model and femur model can be brought closer to the edge of the tabletop for easy display. Moreover, the position can be easily adjusted when the display direction changes.

[0028] Optionally, a slide rail along the length of the support crossbar is fixed on the support crossbar, the fixed column is fixed at one end of the support crossbar, and a slider is fixed at the lower end of the sliding column. The slider is slidably connected to the slide rail. The slider is also provided with a fourth locking member that can lock the slider to the slide rail.

[0029] By adopting the above technical solution, the sliding column slides on the slide rail on the support crossbar via a slider, which reduces wear and is convenient and reliable. After moving into place, it is locked by the fourth locking component to maintain stability.

[0030] Optionally, the support frame also includes several pins for fixing the tibia model and / or femur model. The base has a row of placement holes for placing the pins, and each placement hole is provided with a magnetic suction element on its wall.

[0031] By adopting the above technical solution, the button is easy to place and use. The button is a metal part that can be attracted by a magnet. By attracting the button with a magnetic component, the button can be effectively prevented from falling or being lost.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. The entire support frame in this application can be conveniently placed on the table without installation or fixation, and the front and rear positions of the tibia model and femur model on the table can be adjusted, making it very convenient to use.

[0034] 2. In this application, the sliding column can drive the second clamping member to move horizontally toward the femoral model, thereby adjusting the distance between the tibia model and the femoral model.

[0035] 3. The first clamping member and the second clamping member in this application can fix the tibia model and the femur model at the same time. The demonstration can be achieved without the assistance of others. No replacement is required when cutting the tibia model and the femur model, which is convenient and quick.

[0036] 4. In this application, the first clamping member and the second clamping member can swing up and down, which can realize the arbitrary placement and pause of the free flexion and extension angle of the knee joint, thereby meeting diverse demonstration needs.

[0037] 5. In this application, the different internal and external rotation angles of the knee joint pseudobone model are adjusted by swinging the connecting arm. Attached Figure Description

[0038] Figure 1 This is a first three-dimensional structural schematic diagram of the support frame in this application.

[0039] Figure 2 This is a schematic diagram of the second three-dimensional structure of the support frame in this application.

[0040] Figure 3 This is a cross-sectional structural diagram of the support frame in this application.

[0041] Figure 4 yes Figure 3 A magnified schematic diagram of the structure at point C.

[0042] Figure 5 yes Figure 2 A magnified schematic diagram of the structure at point B in the middle.

[0043] Figure 6 yes Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0044] In the picture:

[0045] 100. Base; 11. First support rod; 12. Second support rod; 13. Support crossbar; 131. Placement hole; 132. Mounting slot; 14. Slide rail; 141. Guide post; 15. Slider; 16. Fourth locking element; 17. Magnetic element; 18. Roller;

[0046] 200. Fixed column; 21. First mounting groove; 22. First connecting pin hole;

[0047] 300. Sliding column; 31. Second mounting groove; 32. Second connecting pin hole;

[0048] 400. First clamping component; 41. First connecting rod; 42. First support plate; 421. First support plane; 43. First connecting pin; 44. First limiting plate; 441. First positioning hole; 45. Screw through hole; 46. Support screw;

[0049] 500. Second clamping member; 51. Second connecting rod; 52. Second support plate; 521. Second support plane; 53. Second connecting pin; 54. Second limiting plate; 541. Second positioning hole; 55. Connecting arm; 551. Connecting hole; 56. Third locking member;

[0050] 600. First locking component;

[0051] 700. Second locking element;

[0052] 800. Buttons;

[0053] 1000, Tibial model;

[0054] 1001. Femoral model. Detailed Implementation

[0055] The following is in conjunction with the appendix Figure 1 -Appendix Figure 6 This application will be described in further detail below.

[0056] Reference Figure 1 and Figure 2 As shown, the knee replacement surgery prosthetic bone operation demonstration support frame in this application includes a base 100. The base 100 includes a first support longitudinal rod 11 and a second support longitudinal rod 12 arranged in parallel and spaced apart. The first support longitudinal rod 11 and the second support longitudinal rod 12 can be I-beams. A support crossbar 13 is provided between the first support longitudinal rod 11 and the second support longitudinal rod 12. One end of the support crossbar 13 is slidably connected to the first support longitudinal rod 11, and the other end of the support crossbar 13 is slidably connected to the second support longitudinal rod 12. Specifically, the opposite sides of the first support rod 11 and the second support rod 12 are both dovetail grooves or T-grooves, and the length direction of the dovetail grooves or T-grooves is set along the length direction of the first support rod 11 and the second support rod 12. The support crossbar 13 is in the shape of a long strip, and both ends of the support crossbar 13 are shaped to match the dovetail grooves or T-grooves. The two ends of the support crossbar 13 are respectively slidably embedded in the dovetail grooves or T-grooves of the first support rod 11 and the second support rod 12. In this way, the support crossbar 13 can move back and forth on the first support rod 11 and the second support rod 12 along the length direction of the first support rod 11 and the second support rod 12 without deviating or falling off.

[0057] Reference Figure 1 and Figure 2 As shown, a fixed column 200 and a sliding column 300 are respectively provided on the support crossbar 13. A slide rail 14 along the length of the support crossbar 13 is fixed on the support crossbar 13. The slide rail 14 is fixed to the upper side of the support crossbar 13 by bolts. The fixed column 200 is fixed at one end of the support crossbar 13. The slide rail 14 extends from the position near the fixed column 200 to the other end of the support crossbar 13. A slider 15 is fixed at the lower end of the sliding column 300. The slider 15 is slidably connected to the slide rail 14. The slider 15 is also provided with a fourth locking member 16 that can lock the slider 15 and the slide rail 14. The fourth locking member 16 can be a locking screw or an adjustable handle, used to fix the relative position between the slider 15 and the slide rail 14.

[0058] Reference Figure 3 and Figure 4 As shown, the slide rail 14 has guide posts 141 on both sides along the length of the slide rail 14. Part of the guide post 141 protrudes from the side of the slide rail 14, forming a raised structure with an arc-shaped curved surface. The slider 15 is sleeved on the slide rail 14. Rollers 18 are provided on both sides of the inner wall of the slider 15. Two spaced rollers 18 are provided on each side of the inner wall of the slider 15. The outer circumferential surface of the roller 18 has an arc-shaped groove along the outer circumferential surface of the roller 18. The guide post 141 is embedded in the arc-shaped groove. The rollers 18 on the inner walls of both sides of the slider 15 clamp the slide rail 14 in the middle. The fourth locking member 16 is screwed onto the slider 15. The inner end of the fourth locking member 16 can pass through the slider 15 and extend into the slider 15 and abut against the side of the slide rail 14, thereby locking the slider 15 and the slide rail 14 together. The sliding column 300 slides on the slide rail 14 on the support crossbar 13 via the slider 15. The roller 18 reduces wear and ensures stability and reliability. After moving into position, it is locked by the fourth locking element 16 to maintain stability.

[0059] Reference Figure 2 and Figure 4As shown, a row of placement holes 131 are provided on the support crossbar 13, extending through both sides of the support crossbar 13. Several placement holes 131 are spaced apart along the length of the support crossbar 13. The placement holes 131 are used to store unused pins 800. Each pin 800 has a cap at one end and a straight rod at the other. The pins 800 are used to fix the tibia model 1000 and / or the femur model 1001. The pins 800 can be made of stainless steel. The bottom of the support crossbar 13 has a mounting groove 132 along its length, which communicates with all the placement holes 131. A magnetic attractor 17 is embedded in the mounting groove 132, positioned where the mounting groove 132 communicates with the placement holes 131. The magnetic attractor 17 is made of permanent magnet. When a pin 800 is placed in each placement hole 131, the magnetic attractor 17 can attract the pin 800, preventing it from falling or being lost.

[0060] Reference Figure 1 and Figure 2 As shown, the fixed column 200 and the sliding column 300 are arranged at intervals relative to each other. The fixed column 200 is provided with a first clamping member 400 for clamping the femoral model 1001 or the tibia model 1000. One end of the first clamping member 400 is rotatably connected to the fixed column 200 and a first locking member 600 is provided between the two. The other end of the first clamping member 400 faces the sliding column 300. The sliding column 300 is provided with a second clamping member 500 for clamping the femoral model 1000 or the tibia model 1001. One end of the second clamping member 500 is rotatably connected to the sliding column 300 and a second locking member 700 is provided between the two. The other end of the second clamping member 500 faces the fixed column 200.

[0061] Reference Figure 2 and Figure 5As shown, the first clamping member 400 includes a first connecting rod 41 and a first support plate 42 for supporting and fixing the tibia model 1000 or the femur model 1001. A first connecting pin 43 is installed at one end of the first connecting rod 41, and the first connecting pin 43 is rotatably inserted into the upper end of the fixed column 200. A first locking member 600 is provided at the upper end of the fixed column 200 and can abut against the first connecting pin 43. The first support plate 42 is provided at the other end of the first connecting rod 41. Specifically, the upper end of the fixed column 200 has a first mounting groove 21, which extends through both opposite sides of the upper end of the fixed column 200. One end of the first connecting rod 41 is embedded in the first mounting groove 21, and a first connecting pin 43 is provided at the end of the first connecting rod 41 embedded in the first mounting groove 21. The upper end of the fixed column 200 has a first connecting pin hole 22, which extends through the other opposite sides of the upper end of the fixed column 200. The first connecting pin hole 22 communicates with the first mounting groove 21, and both ends of the first connecting pin 43 are rotatably inserted into the first connecting pin holes 22 on both sides of the first mounting groove 21. The above structure enables the rotational connection of the first connecting rod 41. The entire structure is compact and reliable, easy to install and adjust, and will not cause any interference. The tibia model 1000 or femur model 1001 is placed on the first support plate 42. The pitch angle of the first support plate 42 can be adjusted by rotating the first connecting pin 43 on the fixed column 200, and it is fixed and locked by the first locking member 600, thereby realizing the micro-adjustment of the knee joint gap and showing the free flexion and extension angle changes of the knee joint.

[0062] One end of the first connecting rod 41 connected to the first support plate 42 is bent upwards. The first connecting rod 41 and the first support plate 42 are fixedly connected or integrally formed. The first support plate 42 has a first support plane 421 for supporting the tibia model 1000 or the femur model 1001. Both sides of the first support plate 42 have upwardly extending first limiting plates 44. The first limiting plates 44 are provided with a plurality of first positioning holes 441. The first positioning holes 441 are used to fix the insertion pins 800. The tibia model 1000 or the femur model 1001 is placed on the first support plane 421 of the first support plate 42. The pins 800 are inserted into the first positioning holes 441 of the first limiting plate 44. The tip of the pin 800 is inserted into the tibia model 1000 or the femur model 1001 to fix the tibia model 1000 or the femur model 1001.

[0063] Reference Figure 1 and Figure 6As shown, the second clamping member 500 includes a second connecting rod 51 and a second support plate 52 for supporting and fixing the tibia model 1000 or the femur model 1001. A second connecting pin 53 is installed at one end of the second connecting rod 51, and the second connecting pin 53 is rotatably inserted into the upper end of the sliding column 300. A second locking member 700 is provided at the upper end of the sliding column 300 and can abut against the second connecting pin 53. The second support plate 52 is provided at the other end of the second connecting rod 51. Specifically, the upper end of the sliding column 300 is provided with a second mounting groove 31, which extends through the two opposite sides of the upper end of the sliding column 300; one end of the second connecting rod 51 is embedded in the second mounting groove 31, and the end of the second connecting rod 51 embedded in the second mounting groove 31 is provided with a second connecting pin 53; the upper end of the sliding column 300 is provided with a second connecting pin hole 32, which extends through the other two opposite sides of the upper end of the sliding column 300, and the second connecting pin hole 32 is connected to the second mounting groove 31; the two ends of the second connecting pin 53 are respectively rotatably inserted into the second connecting pin holes 32 on both sides of the second mounting groove 31. The second connecting rod 51 is rotatably connected through the above structure. The whole structure is compact and reliable, easy to install and adjust, and will not cause movement interference. The tibia model 1000 or femur model 1001 is placed on the second support plate 52. Then, the pitch angle of the second support plate 52 can be adjusted by rotating the second connecting pin 53 on the sliding column 300, and it can be fixed and locked by the second locking member 700, thereby realizing the up and down micro-adjustment of the knee joint gap and showing the free flexion and extension angle changes of the knee joint.

[0064] The end of the second connecting rod 51 away from the sliding column 300 is connected to a connecting arm 55. One end of the connecting arm 55 has a connecting hole 551. The connecting arm 55 is rotatably sleeved on the end of the second connecting rod 51 through the connecting hole 551. The connecting arm 55 is also provided with a third locking member 56 that can lock the connecting arm 55 and the second connecting rod 51. The other end of the connecting arm 55 is fixedly connected to the second support plate 52 or the two are integrally formed. The second support plate 52 has a second support plane 521 for supporting the tibia model 1000 or the femur model 1001. Both sides of the second support plate 52 have upwardly extending second limiting plates 54. The second limiting plates 54 are provided with a plurality of second positioning holes 541, which are also used to fix the insertion pins 800. The tibia model 1000 or femur model 1001 is placed on the second support plane 521 of the second support plate 52. A snap nail 800 is inserted into the second positioning hole 541 of the second limiting plate 54, with the tip of the snap nail 800 inserted into the tibia model 1000 or femur model 1001 to fix it in place. In this application, the knee joint pseudo-bone model can also be adjusted for different internal and external rotation angles by swinging the connecting arm 55.

[0065] In this application, the first locking element 600, the second locking element 700, and the third locking element 56 can all be locking screws or adjustable handles.

[0066] Reference Figure 1 and Figure 2 As shown, several screw through holes 45 are provided on the bottom surfaces of the first support plate 42 and the second support plate 52. Support screws 46 for supporting the bottom of the tibia model 1000 or the femur model 1001 are screwed into the screw through holes 45. In use, according to the position of the tibia model 1000 or the femur model 1001 placed on the first support plate 42 and the second support plate 52, the appropriate screw through hole 45 is selected, the support screw 46 is screwed into the corresponding screw through hole 45, and the appropriate height is adjusted. The support screw 46 is used to support and fix the bottom of the tibia model 1000 or the femur model 1001, thereby ensuring the stability and reliability of the installation of the tibia model 1000 and the femur model 1001.

[0067] The implementation principle is as follows: the entire base 100 is placed directly on the table or tabletop. The first support rod 11 and the second support rod 12 are usually set along the width of the tabletop. The support crossbar 13 can be adjusted to its position on the first support rod 11 and the second support rod 12. Through the free sliding function of the support crossbar 13, the tibia model 1000 and the femur model 1001 can be brought closer to the edge of the tabletop for easy display. When the display direction changes, it is convenient to adjust the position. One of the first clamping member 400 and the second clamping member 500 is used to place the femoral model 1001, and the other is used to place the tibia model 1000. For example, the femoral model 1001 can be placed on the first clamping member 400 and clamped and fixed, and the tibia model 1000 can be placed on the second clamping member 500 and clamped and fixed. The positions of the first clamping member 400 and the femoral model 1001 on the fixed column 200 remain unchanged in the horizontal direction. The sliding column 300 can drive the second clamping member 500 and the tibia model 1000 to move towards the femoral model 1001 in the horizontal direction, thereby adjusting the distance between the tibia model 1000 and the femoral model 1001.

[0068] In this application, the entire support frame can be conveniently placed on a table without installation or fixation, making it very easy to use. The first clamp 400 and the second clamp 500 can simultaneously fix the tibia model 1000 and the femur model 1001, enabling demonstrations without the need for assistance from others. No replacement is required when cutting the tibia model 1000 and the femur model 1001, making it convenient and quick. Simultaneously, the sliding column 300 can be moved as needed to adjust the gap between the tibia model 1000 and the femur model 1001. In this application, the first clamp 400 and the second clamp 500 can swing up and down, allowing for arbitrary placement and pauses of the knee joint's free flexion and extension angles, thus meeting diverse demonstration needs.

[0069] The support frame in this application can adjust the different flexion and extension angles of the knee joint prosthesis, as well as the different internal and external rotation angles of the knee joint prosthesis. It can also make micro-adjustments to the vertical gap of the knee joint. It is fixed by clamping with pins 800. The tibial model 1000 and the femoral model 1001 are placed directly on the first clamping member 400 and the second clamping member 500 and then nailed in place with pins 800. The operation is quick and convenient. It can keep the tibial model 1000 and the femoral model 1001 free of additional clamping tools, ensuring the exposure of the tibial model 1000 and the femoral model 1001, thereby avoiding interference from clamping tools in subsequent operation steps. This application is equipped with multiple locking members to prevent the elasticity of the ligament model at the knee joint from causing osteotomy instability.

[0070] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A demonstration support frame for prosthetic bone manipulation in knee replacement surgery, characterized in that, The application relates to a support frame for holding a femur model (1001) or a tibia model (1000), which comprises a base (100) provided with a fixed column (200) and a sliding column (300) respectively, the fixed column (200) and the sliding column (300) are oppositely spaced, the lower end of the fixed column (200) is fixed on the base (100), and the lower end of the sliding column (300) is slidingly arranged on the base (100) and can reciprocatingly move towards the fixed column (200); the fixed column (200) is provided with a first holding piece (400) for holding the femur model (1001) or the tibia model (1000), one end of the first holding piece (400) is rotationally connected with the fixed column (200) and a first locking piece (600) is arranged between the two, and the other end of the first holding piece (400) faces the sliding column (300); the sliding column (300) is provided with a second holding piece (500) for holding the tibia model (1000) or the femur model (1001), one end of the second holding piece (500) is rotationally connected with the sliding column (300) and a second locking piece (700) is arranged between the two, and the other end of the second holding piece (500) faces the fixed column (200). The first holding piece (400) comprises a first supporting plate (42) for supporting and fixing the tibia model (1000) or the femur model (1001); and the second holding piece (500) comprises a second supporting plate (52) for supporting and fixing the tibia model (1000) or the femur model (1001). Screw through holes (45) are formed in the bottom surfaces of the first supporting plate (42) and the second supporting plate (52), and supporting screws (46) for supporting the bottom of the tibia model (1000) or the femur model (1001) are screwed in the screw through holes (45). The support frame further comprises a plurality of press nails (800) for fixing the tibia model (1000) and / or the femur model (1001), and a row of placing holes (131) for placing the press nails (800) are formed in the base (100), and a magnetic attracting piece (17) is further arranged on the hole wall of each placing hole (131). The first supporting plate (42) is provided with first limiting plates (44) extending upwards on both sides, a plurality of first positioning holes (441) are formed in the first limiting plates (44), and the first positioning holes (441) are used for fixing the press nails (800); and the second supporting plate (52) is provided with second limiting plates (54) extending upwards on both sides, a plurality of second positioning holes (541) are formed in the second limiting plates (54), and the second positioning holes (541) are also used for fixing the press nails (800).

2. The operation demonstration support frame for a knee replacement surgery prosthesis bone according to claim 1, wherein The first clamping piece (400) further comprises a first connecting rod (41), one end of the first connecting rod (41) is provided with a first connecting pin shaft (43), the first connecting pin shaft (43) is rotatably inserted into the upper end of the fixed column (200); the first locking piece (600) is arranged at the upper end of the fixed column (200) and can abut against the first connecting pin shaft (43), and the first supporting plate (42) is arranged at the other end of the first connecting rod (41).

3. The knee replacement surgery operation demonstration support frame for a prosthetic bone according to claim 2, wherein The upper end of the fixed column (200) is provided with a first mounting groove (21), the first mounting groove (21) penetrates through the opposite two sides of the upper end of the fixed column (200); one end of the first connecting rod (41) is embedded in the first mounting groove (21), and the first connecting rod (41) embedded in the first mounting groove (21) is provided with the first connecting pin shaft (43) at one end; the upper end of the fixed column (200) is provided with a first connecting pin hole (22), the first connecting pin hole (22) penetrates through the other opposite two sides of the upper end of the fixed column (200), the first connecting pin hole (22) is in communication with the first mounting groove (21), and the two ends of the first connecting pin shaft (43) are rotatably inserted into the first connecting pin hole (22) on the two sides of the first mounting groove (21).

4. The operation demonstration support frame for a knee joint replacement surgery prosthesis bone according to claim 2 or 3, characterized in that, The end of the first connecting rod (41) connected with the first supporting plate (42) is upwardly bent, and the first connecting rod (41) is fixedly connected with the first supporting plate (42) or integrally formed with the first supporting plate (42); the first supporting plate (42) has a first supporting plane (421) for supporting a tibia model (1000) or a femur model (1001).

5. The knee replacement surgery operation demonstration support frame for a prosthetic bone according to claim 2, wherein The second clamping piece (500) further comprises a second connecting rod (51), one end of the second connecting rod (51) is provided with a second connecting pin shaft (53), the second connecting pin shaft (53) is rotatably inserted into the upper end of the sliding column (300); the second locking piece (700) is arranged at the upper end of the sliding column (300) and can abut against the second connecting pin shaft (53), and the second supporting plate (52) is arranged at the other end of the second connecting rod (51).

6. The knee replacement surgery operation demonstration support frame for a prosthetic bone according to claim 5, wherein The upper end of the sliding column (300) is provided with a second mounting groove (31), the second mounting groove (31) penetrates through the opposite two sides of the upper end of the sliding column (300); one end of the second connecting rod (51) is embedded in the second mounting groove (31), and the second connecting rod (51) embedded in the second mounting groove (31) is provided with the second connecting pin shaft (53) at one end; the upper end of the sliding column (300) is provided with a second connecting pin hole (32), the second connecting pin hole (32) penetrates through the other opposite two sides of the upper end of the sliding column (300), the second connecting pin hole (32) is in communication with the second mounting groove (31), and the two ends of the second connecting pin shaft (53) are rotatably inserted into the second connecting pin hole (32) on the two sides of the second mounting groove (31).

7. The knee replacement surgery operation demonstration support frame for a prosthetic bone according to claim 5, wherein The second connecting rod (51) is connected with a connecting arm (55) away from one end of the sliding column (300), one end of the connecting arm (55) is provided with a connecting hole (551), the connecting arm (55) is rotatably sleeved on the end of the second connecting rod (51) through the connecting hole (551), and the connecting arm (55) is further provided with a third locking piece (56) capable of locking the connecting arm (55) and the second connecting rod (51); the other end of the connecting arm (55) is fixedly connected with the second supporting plate (52) or is integrally formed with the second supporting plate (52); the second supporting plate (52) is provided with a second supporting plane (521) for supporting a tibia model (1000) or a femur model (1001).

8. The knee replacement surgery bone operation demonstration support frame according to claim 1, characterized in that, The base (100) comprises first and second supporting vertical rods (11, 12) arranged in parallel and spaced apart, a supporting horizontal rod (13) is arranged between the first and second supporting vertical rods (11, 12), one end of the supporting horizontal rod (13) is slidably connected to the first supporting vertical rod (11), the other end of the supporting horizontal rod (13) is slidably connected to the second supporting vertical rod (12), and the supporting horizontal rod (13) can reciprocate along the length direction of the first and second supporting vertical rods (11, 12) on the first and second supporting vertical rods (11, 12); the fixed column (200) and the sliding column (300) are arranged on the supporting horizontal rod (13); the supporting horizontal rod (13) is fixedly provided with a sliding rail (14) in the length direction of the supporting horizontal rod (13), the fixed column (200) is fixedly arranged at one end of the supporting horizontal rod (13), the lower end of the sliding column (300) is fixedly provided with a sliding block (15), and the sliding block (15) is slidably connected to the sliding rail (14); the sliding block (15) is further provided with a fourth locking piece (16) capable of locking the sliding block (15) and the sliding rail (14).

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