Proximal femur anti-introversion supporting steel plate, biomechanical experimental instrument and use method of proximal femur anti-introversion supporting

Abstract

The invention belongs to the technical field of fixing and implanting materials in human bodies, particularly relates to a proximal femur anti-introversion supporting steel plate, a biomechanical experiment instrument and a use method of the biomechanical experiment instrument, and provides the following scheme aiming at the problem that the fixing strength of the supporting steel plate and the superiority of hip introversion resistance cannot be effectively verified in the prior art: the proximal femur anti-introversion supporting steel plate comprises a bottom plate, a vertical plate is fixed to the top of the bottom plate, a groove is formed in the top of the bottom plate, a lead screw is rotationally connected into the groove, a pushing plate is slidably connected to the top of the bottom plate, and the pushing plate is in threaded connection with the lead screw; the simulation crotch is arranged on one side of the vertical plate in a sliding mode, rotating spherical grooves are formed in the two sides of the simulation crotch, the standing state of a user can be simulated through movement of the pushing plate, the pushing plate can move to a designated position, the simulation crotch and the thighbone model can be driven to move up and down, and the jumping state of the user can be simulated; through the two states, the fixing strength of the anti-varus supporting steel plate and the superiority of hip varus resistance can be comprehensively detected.

Description

Technical Field

[0001] The invention relates to the technical field of human body internal fixation implant materials, and in particular to a proximal femoral anti-varus support steel plate and a biomechanical experiment instrument and a use method thereof. Background Art

[0002] There are many internal fixation methods for femoral trochanteric fractures and femoral neck base fractures, and the internal fixation materials are also quite rich, among which the mainstream ones include DHS, PCCP, proximal femoral locking plate, hollow nails, intramedullary nails (PFN), etc. However, these internal fixation methods and materials have a common and unavoidable defect, that is, it is difficult to prevent the occurrence of femoral neck varus (hip varus). This is mainly because this type of fracture is mainly suffered by elderly patients, and the elderly generally have osteoporosis problems. Once they fall, it is very easy to cause femoral trochanteric or femoral neck fractures. Due to osteoporosis, internal fixation devices are prone to cutting and loosening, which in turn causes varus. In the prior art, support plates are used to support the femoral neck and femoral shaft to prevent femoral neck varus.

[0003] However, the support steel plates in the existing technology are insufficient in experimental verification, and it is difficult to effectively evaluate their fixation strength and superiority in anti-hip varus performance. This technology can more accurately verify the fixation strength and anti-hip varus performance of the support steel plate by simulating the user's process from sitting to standing and jumping, thereby proving the effect of the support steel plate from the principle of mechanics. This experimental method is closer to actual use and helps to improve the application reliability and safety of the support steel plate.

[0004] In view of the above problems, the present invention document proposes a proximal femoral anti-varus support steel plate and a biomechanical testing instrument and a method for using the same. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the existing inability to effectively verify the fixing strength of the supporting steel plate and the superiority of anti-hip varus, and to propose a light detection device for a smart home sound and light alarm lamp and a method of using the same.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A proximal femoral anti-varus support steel plate, comprising a steel plate arranged on one side of a femoral model, wherein the femoral model is composed of a femoral shaft and a femoral neck, and the femoral neck is fixed to the top of the femoral shaft, a resistance plate is integrally formed on the top of the steel plate, and one side of the resistance plate fits the femoral neck, and a plurality of first steel nail holes and second steel nail holes are respectively arranged in the steel plate and the resistance plate, and steel nails are fixed in the first steel nail holes and the second steel nail holes for fixing the steel plate and the resistance plate to the femoral shaft and the femoral neck respectively;

[0008] It also includes a spiral support plate, which is fixed on one side of the steel plate and is used to support the femoral neck. A plurality of fastening steel nails are arranged in the spiral support plate and are used to fix the spiral support plate and the femoral neck.

[0009] In a possible design, a second curved surface and a first curved surface are respectively provided on one side of the steel plate and the contact plate, and the second curved surface and the first curved surface can make the steel plate and the contact plate fit tightly against the femoral shaft and the femoral neck, and the inner wall of the spiral support plate fits against the femoral neck to support the femoral neck.

[0010] In a possible design, the angle between the second steel nail hole and the horizontal plane is 110°-140°.

[0011] A biomechanical experiment instrument, used for testing the above-mentioned proximal femoral anti-varus support steel plate, comprises a bottom plate, a vertical plate is fixed on the top of the bottom plate, a groove is provided on the top of the bottom plate, a screw rod is rotatably connected in the groove, a push plate is slidably connected to the top of the bottom plate, and the push plate is threadedly connected to the screw rod;

[0012] It also includes a simulated crotch, which is slidably arranged on one side of the vertical plate, and both sides of the simulated crotch are provided with rotating spherical grooves, and the rotating spherical grooves match the femoral neck of the femoral model to simulate the strength of the steel plate, the contact plate and the spiral support plate of the femoral model in different states, an L-shaped lifting plate is fixed on one side of the simulated crotch, and the L-shaped lifting plate slides through the vertical plate, and a load-bearing block is provided on the top of the simulated crotch;

[0013] Wherein, a first fixing rod is provided in the pushing plate, and both ends of the first fixing rod are respectively connected to the rotation of the corresponding femoral model, and both ends of the first fixing rod are threadedly connected with bolts for limiting the femoral model, and a rotating disk is provided on one side of the vertical plate, and a fixing column is fixed on the side of the rotating disk deviating from the center of the circle, which is used to drive the simulated hip to move up and down;

[0014] The first experimental structure is arranged on the push plate, and is used to drive the simulated crotch to rise and fall when the push plate moves, so as to simulate the state of the steel plate when standing up;

[0015] The second experimental structure is set in the vertical board, which is used to drive the simulated hips to move up and down, simulating the state of the steel plate during jumping.

[0016] In a possible design, the first experimental structure includes two rectangular holes arranged in the push plate, the two rectangular holes are slidably connected with a first sliding block, the bottoms of the two first sliding blocks are fixed with a plurality of first springs, and the bottom ends of the first springs are fixedly connected to the bottom inner walls of the rectangular holes, the two first sliding blocks are fixedly sleeved on the outer wall of the first fixed rod, the side of the push plate away from the vertical plate is slidably connected with an L-shaped pull plate, the L-shaped pull plate is used to pull the first fixed rod downward, two fixed plates are fixed on the top of the bottom plate, the two fixed plates are respectively located on both sides of the screw rod, pins are fixed on both sides of the L-shaped pull plate, and the two The fixing plates are provided with track grooves on the sides close to each other, and the track grooves cooperate with the pins to control the lifting and lowering of the first fixing rod; the motor drives the screw rod to rotate, and drives the push plate to move toward the vertical plate. When the push plate moves, it drives the L-shaped pull plate to move. The L-shaped pull plate drives the L-shaped pull plate downward under the cooperation of the pins and the track grooves, and the L-shaped pull plate drives the first fixing rod downward. At this time, it is further ensured that the left end of the model is higher than the right end, and that the push plate can smoothly push the simulated hips upward through the model; then the screw rod rotates forward and reversely to drive the push plate and the trapezoidal plate left and right, which is used to drive the simulated hips to move up and down, so as to detect the fixing strength of the support steel plate and the superiority of anti-hip varus.

[0017] In a possible design, the second experimental structure includes a sliding rod that slides through the vertical plate, and the sliding rod cooperates with the pushing plate, the outer wall fixed sleeve of the sliding rod is provided with a stopper, and the stopper is used to limit the simulated hip support, the side where the vertical plate and the stopper are close to each other is fixed with the same second spring, and the second spring sleeve is arranged on the outer wall of the sliding rod, one side of the vertical plate is fixed with a limit rod for limiting the stopper, and when the limit rod and the stopper are in conflict, the femoral model is in a vertical state, the end of the sliding rod away from the pushing plate is fixed with a push plate, the L-shaped lifting plate is provided with a rectangular make way hole for the push plate to make way, the top of the L-shaped lifting plate is fixed with a moving frame, and the moving frame cooperates with the fixed column to drive the L-shaped lifting plate to move up, the side of the push plate away from the vertical plate is rotatably connected to the rotating disk, one side of the vertical plate is rotatably connected with a rotating shaft, one end of the rotating shaft passes through the push plate and the rotating disk, the rotating shaft is slidably connected to the rotating disk through a slide groove and a slider, a transmission bin is provided on the top of the vertical plate, and one end of the rotating shaft rotates and extends to the transmission bin A spur gear is fixed in the warehouse, and a driving motor is fixed on the top of the vertical plate. The output shaft of the driving motor is fixed with a residual gear through a coupling, and the residual gear is located in the transmission warehouse and intermittently meshed with the spur gear, which is used to drive the spur gear and the rotating shaft to rotate intermittently, so that the rotating disk drives the L-shaped lifting plate and the simulated hip to move up intermittently; when the pushing plate moves to the left and pushes the sliding rod to move, the pushing plate drives the simulated hip and the L-shaped lifting plate to move up through the model, at this time the model is in a vertical state, and the pushing plate pushes the sliding rod to move to the left, and the sliding rod drives the rotating disk and the fixed column to move outward through the pushing plate, and the fixed column can just extend into the moving frame, and then the driving motor drives the residual gear to rotate, and the residual gear and the spur gear rotate intermittently, and the spur gear can drive the rotating disk and the truncated cone to rotate through the rotating shaft, and the cooperation of the truncated cone and the moving frame can drive the simulated hip and the model to move up until the spur gear and the residual gear are out of meshing, and at this time the simulated hip falls, which can simulate the changes of the model when the user jumps, so as to detect the fixing strength of the supporting steel plate and the superiority of anti-hip varus.

[0018] In a possible design, two fixed limit plates are fixed on the top of the base plate, and the two fixed limit plates are located on both sides of the pushing plate. The two fixed limit plates are slidably connected to a supporting plate on one side close to each other, and the supporting plate is used to support the femoral model. The top of the base plate is slidably connected to a trapezoidal plate threadedly connected to the screw rod. Both ends of the bottom of the supporting plate are provided with inclined surfaces, and the inclined surfaces cooperate with the two inclined surfaces of the trapezoidal plate to drive the supporting plate to move upward; the screw rod simultaneously drives the trapezoidal plate and the pushing plate to move toward the vertical plate direction, and the trapezoidal plate cooperates with the inclined surfaces at the bottom of the supporting plate to drive the supporting plate to move upward, and the trapezoidal plate pushes the model upward so that the left end of the model is higher than the right end, which is convenient for the pushing plate to move to the left side and push the simulated hip to move upward through the model, which is used to simulate the state of the model when the user sits up and stands up.

[0019] In a possible design, a frustum is fixed at one end of the fixed column away from the rotating disk, which is used to make way when the fixed column is inserted into the moving frame; when the push plate moves to the left and pushes the sliding rod to move, the push plate drives the simulated hip and the L-shaped lifting plate to move up through the model. At this time, the model is in a vertical state, and the sliding rod drives the rotating disk and the fixed column to move outward through the push plate, so that the fixed column can just extend into the moving frame, and when the fixed column extends into the moving frame, the inclined surface of the outer wall of the frustum can play a role of making way, ensuring that the fixed column can extend into the moving frame.

[0020] In a possible design, two vertical grooves are provided on one side of the vertical plate close to the simulated hip, and the two vertical grooves are respectively located on both sides of the simulated hip, and a second sliding block is slidably connected in the two vertical grooves, and the outer walls of the two second sliding blocks are sleeved with a second fixing rod, and the ends of the two second fixing rods close to each other are respectively fixedly connected to the two sides of the simulated hip, and the cooperation between the simulated hip and the second fixing rod is used to control the synchronous lifting and lowering of the second sliding block, and the ends of the two second sliding blocks away from the vertical plate can be detached with a camera for synchronously photographing the rotation of the femoral model, steel plate, contact plate and spiral support plate when the simulated hip is lifted and lowered; when the simulated hip moves up and down, the model rotates, and at this time, the simulated hip drives the camera to move synchronously through the cooperation of the second sliding block and the second fixing rod, and at this time, the camera can clearly capture the state of the model during the rotation process, which is used for later analysis of whether the model has inversion phenomenon, so as to accurately detect the fixation strength of the support steel plate and the superiority of anti-hip inversion.

[0021] In this application, the method for using the biomechanical experiment instrument comprises the following steps:

[0022] S1. Assemble the experimental model: Assemble the femur model with the steel plate, the contact plate and the first steel nail hole. The load-bearing block on the simulated hip is used to simulate the weight of the user's upper body, which can be adjusted to simulate the support effect under different gravity;

[0023] S2, simulation of sitting to standing: the left end of the model is moved upward by the motor drive to simulate the user's state of standing from sitting, so as to facilitate the subsequent upward movement of the simulated hips;

[0024] S3, further simulate the standing up action: when the push plate moves, the L-shaped pull plate moves downward, further ensuring that the left end of the model is higher than the right end, driving the simulated hip to move up and down, and testing the fixing strength of the support steel plate and the anti-hip varus performance;

[0025] S4, simulated jumping action: the push plate pushes the sliding rod to move, driving the simulated hip and L-shaped lifting plate to move up, simulating the change of the model during jumping, and further testing the performance of the supporting steel plate;

[0026] S5. Shooting analysis: When simulating the up and down movement of the hips, the camera moves synchronously to shoot the state of the model during rotation, which is used for later analysis of whether inversion occurs and accurately detects the performance of the supporting steel plate.

[0027] Beneficial effects:

[0028] In the present invention, the two rectangular holes are slidably connected with a first sliding block, the two first sliding blocks are fixedly sleeved on the outer wall of the first fixed rod, one side of the push plate is slidably connected with an L-shaped pull plate, both sides of the L-shaped pull plate are fixed with pins, and the sides of the two fixed plates close to each other are provided with track grooves; the push plate drives the L-shaped pull plate to move toward the vertical plate, and the L-shaped pull plate drives the L-shaped pull plate and the first fixed rod to move downward under the cooperation of the pin and the track groove, at this time, it is further ensured that the left end of the model is higher than the right end, and it is ensured that the push plate can smoothly push the simulated hip to move upward through the model; in this way, the fixing strength of the support steel plate and the superiority of anti-hip varus when the user stands up are detected;

[0029] In the present invention, a sliding rod is slidably penetrated in the vertical plate, one end of the sliding rod is fixed with a push plate rotatably connected to the rotating disk, a moving frame is fixed on the top of the L-shaped lifting plate, one end of the rotating shaft penetrates the push plate and the rotating disk, and the rotating shaft is slidably connected to the rotating disk; when the pushing plate moves to the left and pushes the sliding rod to move, the femur model is in a vertical state, and the pushing plate pushes the sliding rod to move, so that the fixed column extends into the moving frame, and the spur gear can drive the rotating disk and the truncated cone to rotate through the rotating shaft, and the cooperation of the truncated cone and the moving frame can drive the simulated hip and the model to move upward until the spur gear and the residual gear are out of meshing, at which time the simulated hip falls, and the change of the model when the user jumps can be simulated, so as to detect the fixing strength of the supporting steel plate and the superiority of anti-hip varus.

[0030] In the present invention, two fixed limit plates are fixed on the top of the femoral model, and the two fixed limit plates are slidably connected to the supporting plates on the sides close to each other. The top of the femoral model is slidably connected to a trapezoidal plate, and both ends of the bottom of the supporting plate are provided with inclined surfaces; the screw rod drives the trapezoidal plate and the pushing plate to move in the direction of the vertical plate at the same time, and the trapezoidal plate cooperates with the inclined surface at the bottom of the supporting plate to drive the supporting plate to move upward, and the trapezoidal plate pushes the model upward, so that the left end of the model is higher than the right end, which is convenient for the pushing plate to move to the left side to push the simulated hip to move upward through the model, which is used to simulate the state of the model when the user sits up and stands up;

[0031] In the present invention, the movement of the pushing plate can not only simulate the user's standing state, and the pushing plate can be moved to a specified position, but also can drive the simulated hip and femur model to move up and down to simulate the user's jumping state. Through these two states, the fixing strength of the anti-varus support steel plate and the superiority of anti-hip varus can be comprehensively tested, and the operation is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the three-dimensional structure of the proximal femoral anti-varus support steel plate provided in Example 1 of the present invention;

[0033] Figure 2 A schematic diagram of the front and cross-sectional structure of the proximal femoral anti-varus support steel plate provided in Example 1 of the present invention;

[0034] Figure 3 A schematic diagram of the front cross-sectional structure of a steel plate and a contact plate of a proximal femoral anti-varus support steel plate provided in Example 1 of the present invention;

[0035] Figure 4 A schematic diagram of the three-dimensional structure of the steel plate, the abutment plate and the spiral support plate of the proximal femoral anti-varus support steel plate provided in Example 1 of the present invention;

[0036] Figure 5 A schematic diagram of the three-dimensional structure of the connecting arm of the biomechanical experiment instrument provided in Example 1 of the present invention;

[0037] Figure 6 This is a schematic diagram of the main cross-sectional structure of the biomechanical experiment instrument provided in Example 1 of the present invention;

[0038] Figure 7 A schematic diagram of a three-dimensional explosion structure of a simulated crotch and an L-shaped lifting plate of the biomechanical experiment instrument provided in Example 1 of the present invention;

[0039] Figure 8 A schematic diagram of a three-dimensional explosion structure of a push plate, a support plate and bolts of a biomechanical experiment instrument provided in Example 1 of the present invention;

[0040] Fig. 9 A schematic diagram of a three-dimensional explosion structure of a support plate, a fixed limit plate and a trapezoidal plate of a biomechanical experiment instrument provided in Example 1 of the present invention;

[0041] Fig.10 This is a schematic diagram of the three-dimensional explosion structure of the push plate, track groove, L-shaped pull plate and first sliding block of the biomechanics experiment instrument provided in Example 1 of the present invention.

[0042] Fig.11 A schematic diagram of the three-dimensional structure of an L-shaped lifting plate, a sliding rod and a push plate of the biomechanical experiment instrument provided in Example 1 of the present invention;

[0043] Fig.12 A schematic diagram of a three-dimensional exploded structure of a rotating disk, a push plate and a spur gear of a biomechanical experiment instrument provided in Example 1 of the present invention;

[0044] Fig.13 This is a schematic diagram of the three-dimensional explosion structure of the vertical plate, simulated crotch and camera of the biomechanical experiment instrument provided in Example 2 of the present invention.

[0045] In the figure: 1. Femoral model; 2. Steel plate; 3. Resistance plate; 4. First steel nail hole; 5. Second steel nail hole; 6. First arc surface; 7. Second arc surface; 8. Spiral support plate; 9. Fastening steel nail; 10. Bottom plate; 11. Vertical plate; 12. Simulated hip; 13. Bearing block; 14. Rotating spherical groove; 15. Push plate; 16. Screw rod; 17. First fixing rod; 18. Bolt; 19. Rectangular hole; 20. First sliding block; 21. First spring; 22. L-shaped pull plate; 23. Pin column; 24. Fixing plate; 25. Track Groove; 26, trapezoidal plate; 27, supporting plate; 28, fixed limit plate; 29, inclined plane; 30, sliding rod; 31, block; 32, second spring; 33, limit rod; 34, L-shaped lifting plate; 35, moving frame; 36, rectangular clearance hole; 37, push plate; 38, rotating shaft; 39, rotating disk; 40, fixed column; 41, frustum; 42, spur gear; 43, residual gear; 44, driving motor; 45, transmission compartment; 46, vertical groove; 47, second sliding block; 48, second fixed rod; 49, camera. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0047] Example 1

[0048] Reference Figure 1-Figure 4 , a support steel plate, which is used in the field of fixed implant materials in the human body, a steel plate 2 is arranged on one side of a femoral model 1, wherein the femoral model 1 is composed of a femoral shaft and a femoral neck, and the femoral neck is fixed at the top of the femoral shaft, and a contact plate 3 is integrally formed on the top of the steel plate 2, and one side of the contact plate 3 is tightly fitted with the femoral neck, and a plurality of first steel nail holes 4 and second steel nail holes 5 are respectively opened in the steel plate 2 and the contact plate 3, and these steel nail holes are used to fix steel nails so as to firmly fix the steel plate 2 and the contact plate 3 to the femoral shaft and the femoral neck respectively. In addition, a spiral support plate 8 is also included, which is fixed on one side of the steel plate 2 and is specifically used to provide support for the femoral neck. A plurality of fastening steel nails 9 are also arranged in the spiral support plate 8 for fixing it with the femoral neck.

[0049] Reference Figure 4In order to ensure that the steel plate 2 and the contact plate 3 can better fit the femoral shaft and the femoral neck, their shapes are specially designed: a second curved surface 7 and a first curved surface 6 are respectively arranged on one side of the steel plate 2 and the contact plate 3. Through the design of the second curved surface 7 and the first curved surface 6, the steel plate 2 and the contact plate 3 can be closely fitted to the femoral shaft and the femoral neck, thereby providing stable support. The inner wall of the spiral support plate 8 is also designed to fit the shape of the femoral neck so as to effectively support the femoral neck.

[0050] Reference Figure 2 In order to further optimize the supporting effect, the angle of the second steel nail hole 5 is specially set: the angle between the second steel nail hole 5 and the horizontal plane is 130°.

[0051] Such a design can ensure that the steel nail can better match the structure of the femoral neck during fixation, thereby improving the stability and support effect of fixation.

[0052] Through the above implementation, a proximal femoral anti-varus support steel plate can be manufactured, which can effectively support and fix the femoral neck to prevent the occurrence of varus, and can be used in biomechanical experiments to test its support effect and stability.

[0053] Reference Figure 5 and Figure 6 , an experimental instrument, which is used in the field of fixed implant materials in the human body. The biomechanical experimental instrument is used to experiment the above-mentioned proximal femoral anti-varus support plate, and specifically includes a base plate 10, a vertical plate 11 is fixed on the top of the base plate 10, a groove is provided on the top of the base plate 10, a screw rod 16 is rotatably connected in the groove, a push plate 15 is slidably connected to the top of the base plate 10, and the push plate 15 is threadedly connected to the screw rod 16.

[0054] Reference Figure 5-Figure 7 The experimental instrument also includes a simulated crotch 12, which is slidably arranged on one side of the vertical plate 11. Rotating spherical grooves 14 are provided on both sides of the simulated crotch 12. The rotating spherical grooves 14 cooperate with the femoral neck of the femoral model 1 to simulate the strength of the steel plate 2, the resistance plate 3 and the spiral support plate 8 of the femoral model 1 under different states. An L-shaped lifting plate 34 is fixed on one side of the simulated crotch 12, and the L-shaped lifting plate 34 slides through the vertical plate 11. A load-bearing block 13 is provided on the top of the simulated crotch 12.

[0055] Reference Figure 6 and Figure 8 A first fixing rod 17 is provided in the pushing plate 15, and both ends of the first fixing rod 17 are rotatably connected to the corresponding femoral model 1 respectively. Both ends of the first fixing rod 17 are threadedly connected with bolts 18 for limiting the femoral model 1. A rotating disk 39 is provided on one side of the vertical plate 11, and a fixing column 40 is fixed on the side of the rotating disk 39 deviating from the center of the circle, which is used to drive the simulated hip 12 to move up and down.

[0056] Reference Figure 5-Figure 12 The experimental instrument also includes a first experimental structure and a second experimental structure. The first experimental structure is arranged on the pushing plate 15, and is used to drive the simulated crotch 12 to rise and fall when the pushing plate 15 moves, simulating the state of the steel plate 2 when standing up. The second experimental structure is arranged in the vertical plate 11, and is used to drive the simulated crotch 12 to move up and down, simulating the state of the steel plate 2 when jumping.

[0057] Reference Figure 6 , Figure 8 and Fig.10 The first experimental structure includes two rectangular holes 19 arranged in the pushing plate 15, and the first sliding blocks 20 are slidably connected in the two rectangular holes 19. A plurality of first springs 21 are fixed to the bottom of the two first sliding blocks 20, and the bottom ends of the first springs 21 are fixedly connected to the bottom inner wall of the rectangular hole 19. The two first sliding blocks 20 are fixedly sleeved on the outer wall of the first fixed rod 17. An L-shaped pull plate 22 is slidably connected to the side of the pushing plate 15 away from the vertical plate 11. The L-shaped pull plate 22 is used to pull the first fixed rod 17 downward. Two fixed plates 24 are fixed to the top of the bottom plate 10. The two fixed plates 24 are respectively located on both sides of the screw rod 16. Pins 23 are fixed to both sides of the L-shaped pull plate 22. Track grooves 25 are provided on the sides of the two fixed plates 24 that are close to each other. The track grooves 25 cooperate with the pins 23 to control the lifting and lowering of the first fixed rod 17.

[0058] Specifically, the motor drives the screw rod 16 to rotate, and drives the push plate 15 to move toward the vertical plate 11. When the push plate 15 moves, it drives the L-shaped pull plate 22 to move. The L-shaped pull plate 22 drives the L-shaped pull plate 22 downward with the cooperation of the pin 23 and the track groove 25. The L-shaped pull plate 22 drives the first fixed rod 17 downward. At this time, it is further ensured that the left end of the model is higher than the right end, and the push plate 15 can smoothly push the simulated hip 12 upward through the model. Then the screw rod 16 rotates forward and reversely to drive the push plate 15 to move left and right, which is used to drive the simulated hip 12 to move up and down, so as to detect the fixing strength of the support steel plate 2 and the superiority of anti-hip varus.

[0059] Reference Figure 6 , Fig.11 and Fig.12 The second experimental structure includes a sliding rod 30 that slides through the vertical plate 11, the sliding rod 30 cooperates with the push plate 15, and a stopper 31 is fixedly sleeved on the outer wall of the sliding rod 30. The stopper 31 is used to support and limit the simulated hip 12. The vertical plate 11 and the stopper 31 are close to each other. The same second spring 32 is fixed, and the second spring 32 is sleeved on the outer wall of the sliding rod 30. A limiting rod 33 for limiting the stopper 31 is fixed on one side of the vertical plate 11. When the limiting rod 33 conflicts with the stopper 31, the femoral model 1 is in a vertical state;

[0060] A push plate 37 is fixed to the end of the sliding rod 30 away from the push plate 15, and a rectangular hole 36 for making way for the push plate 37 is provided in the L-shaped lifting plate 34. A moving frame 35 is fixed to the top of the L-shaped lifting plate 34. The moving frame 35 cooperates with the fixed column 40 to drive the L-shaped lifting plate 34 to move upward. The side of the push plate 37 away from the vertical plate 11 is rotatably connected to the rotating disk 39. One side of the vertical plate 11 is rotatably connected to a rotating shaft 38. One end of the rotating shaft 38 passes through the push plate 37 and the rotating disk 39. The rotating shaft 38 is slidably connected to the rotating disk 39 through a sliding groove and a slider.

[0061] A transmission bin 45 is provided at the top of the vertical plate 11, one end of the rotating shaft 38 rotates and extends into the transmission bin 45 and is fixed with a spur gear 42, a driving motor 44 is fixed to the top of the vertical plate 11, and the output shaft of the driving motor 44 is fixed with a broken gear 43 through a coupling, the broken gear 43 is located in the transmission bin 45 and intermittently meshes with the spur gear 42, and is used to drive the spur gear 42 and the rotating shaft 38 to rotate intermittently, so that the rotating disk 39 drives the L-shaped lifting plate 34 and the simulated hip 12 to move up intermittently.

[0062] Specifically, when the pushing plate 15 moves to the left and pushes the sliding rod 30 to move, the pushing plate 15 drives the simulated hip 12 and the L-shaped lifting plate 34 to move upward through the model. At this time, the model is in a vertical state, and the pushing plate 15 drives the sliding rod 30 to move to the left. The sliding rod 30 drives the rotating disk 39 and the fixed column 40 to move outward through the pushing plate 37. The fixed column 40 can just extend into the moving frame 35, and then the driving motor 44 drives the residual gear 43 to rotate, and the residual gear 43 and the spur gear 42 rotate intermittently. The spur gear 42 drives the rotating disk 39 to rotate through the rotating shaft 38. The rotating disk 39 drives the simulated hip 12 and the model to move upward through the cooperation of the truncated cone 41 and the moving frame 35 until the spur gear 42 and the residual gear 43 are disengaged. At this time, the simulated hip 12 falls down, simulating the changes in the model when the user jumps, so as to detect the fixing strength of the supporting steel plate 2 and the superiority of anti-hip varus.

[0063] Reference Figure 5 , Figure 6 , Figure 8 and Fig. 9 Two fixed limit plates 28 are fixed on the top of the base plate 10, and the two fixed limit plates 28 are located on both sides of the push plate 15. The two fixed limit plates 28 are slidably connected to the sides close to each other with support plates 27, and the support plates 27 are used to support the femoral model 1. The top of the base plate 10 is also slidably connected to a trapezoidal plate 26, and the trapezoidal plate 26 is threadedly connected to the screw rod 16. Both ends of the bottom of the support plate 27 are provided with inclined surfaces 29, and this inclined surface 29 cooperates with the two inclined surfaces 29 of the trapezoidal plate 26 to drive the support plate 27 to move upward.

[0064] Specifically, when the screw rod 16 rotates, it will simultaneously drive the trapezoidal plate 26 and the push plate 15 to move toward the vertical plate 11. The trapezoidal plate 26 cooperates with the inclined surface 29 at the bottom of the supporting plate 27, so that the trapezoidal plate 26 pushes the supporting plate 27 upward during the movement, so that the model will be lifted so that its left end is higher than the right end. This design facilitates the push plate 15 to move to the left side and pushes the simulated crotch 12 upward through the model, which is used to simulate the state of the model when the user stands up from sitting.

[0065] Reference Fig.11 and Fig.12 A frustum 41 is fixed to one end of the fixed column 40 away from the rotating disk 39 , and the frustum 41 is designed to make way for the fixed column 40 when it is inserted into the moving frame 35 .

[0066] Specifically, when the push plate 15 moves to the left and pushes the sliding rod 30 to move, the push plate 15 will drive the simulated hip 12 and the L-shaped lifting plate 34 to move upward through the model. At this time, the model is in a vertical state, and the sliding rod 30 drives the rotating disk 39 and the fixed column 40 to move outward through the push plate 37. The fixed column 40 can just extend into the moving frame 35, and when the fixed column 40 extends into the moving frame 35, the outer wall slope 29 of the frustum 41 can play a role of giving way, ensuring that the fixed column 40 can smoothly extend into the moving frame 35.

[0067] Example 2

[0068] refer to Fig.13 , improved on the basis of Example 1: two vertical grooves 46 are provided on one side of the vertical plate 11 close to the simulated crotch 12, and the two vertical grooves 46 are respectively located on both sides of the simulated crotch 12, and second sliding blocks 47 are slidably connected in the two vertical grooves 46, and the outer walls of the two second sliding blocks 47 are sleeved with second fixing rods 48, and the ends of the two second fixing rods 48 close to each other are respectively fixedly connected to the two sides of the simulated crotch 12. This design enables the simulated crotch 12 to be synchronously lifted and lowered through the cooperation of the second sliding blocks 47 and the second fixing rods 48 when lifting and lowering;

[0069] Cameras 49 are detachably mounted on one end of the two second sliding blocks 47 away from the vertical plate 11. These cameras 49 are used to synchronously shoot the rotation of the femoral model 1, the steel plate 2, the contact plate 3 and the spiral support plate 8 when simulating the lifting and lowering of the hip 12.

[0070] Specifically, when the simulated hip 12 moves up and down, the model will rotate. At this time, the simulated hip 12 drives the camera 49 to move synchronously through the cooperation of the second sliding block 47 and the second fixed rod 48. In this way, the camera 49 can clearly capture the state of the model during the rotation process, which is used for later analysis of whether the model has inversion. Through this design, the fixing strength of the support steel plate 2 and its superiority in resisting hip inversion can be accurately detected.

[0071] The method of using the biomechanical experiment instrument includes the following steps:

[0072] S1, assembling the femoral model 1 with the steel plate 2, the contact plate 3 and the first steel nail hole 4 to form a model for conducting experiments, matching the femoral neck at one end of the model with the rotating spherical groove 14, rotating the femoral shaft on the model on the first fixing rod 17, tightening the bolt 18, limiting the model, completing the assembly work before the experiment, and the load-bearing block 13 on the simulated hip 12 is used to simulate the weight of the user's upper body, and the load-bearing block 13 of corresponding weight can be placed according to different body weights, so as to simulate the fixing strength of the supporting steel plate 2 and the superiority of anti-hip varus under different gravity;

[0073] S2, conduct an experiment simulating the state from sitting to standing, drive the lead screw 16 to rotate through the motor, and the lead screw 16 simultaneously drives the trapezoidal plate 26 and the push plate 15 to move toward the vertical plate 11, the trapezoidal plate 26 cooperates with the inclined surface 29 at the bottom of the support plate 27 to drive the support plate 27 to move upward, and the trapezoidal plate 26 pushes the model upward, so that the left end of the model is higher than the right end, so that the push plate 15 moves to the left side and pushes the simulated crotch 12 upward through the model, so as to simulate the state of the model when the user sits down and stands up;

[0074] S3. At the same time, when the push plate 15 moves, it drives the L-shaped pull plate 22 to move. Under the cooperation of the pin 23 and the track groove 25, the L-shaped pull plate 22 drives the L-shaped pull plate 22 to move downward. The L-shaped pull plate 22 drives the first fixing rod 17 to move downward and squeeze the first spring 21. At this time, it is further ensured that the left end of the model is higher than the right end, and it is ensured that the push plate 15 can smoothly push the simulated hip 12 upward through the model; then the screw rod 16 rotates forward and reversely to drive the push plate 15 and the trapezoidal plate 26 left and right, which is used to drive the simulated hip 12 to move up and down, so as to detect the fixing strength of the support steel plate 2 and the superiority of anti-hip varus;

[0075] S4. When the push plate 15 moves to the left and pushes the sliding rod 30 to move, the push plate 15 drives the simulated hip 12 and the L-shaped lifting plate 34 to move upward through the model. At this time, the model is in a vertical state, and the gravity of the simulated hip 12, the load-bearing block 13 and the model drives the first sliding block 20 to move downward and squeeze the first spring 21, and the push plate 15 drives the sliding rod 30 to move to the left until the limit rod 33 limits the stopper 31, and the second spring 32 is in a compressed state. The sliding rod 30 drives the rotating disk 39 and the fixed column 40 to move outward through the push plate 37, and the fixed column 40 can just extend into the moving frame 35, and when the fixed column 40 extends When extending into the moving frame 35, the outer wall inclined surface 29 of the truncated cone 41 can give way to ensure that the fixed column 40 can extend into the moving frame 35, and then the driving motor 44 drives the residual gear 43 to rotate, and the residual gear 43 and the spur gear 42 rotate intermittently. The spur gear 42 can drive the rotating disk 39 and the truncated cone 41 to rotate through the rotating shaft 38. The cooperation between the truncated cone 41 and the moving frame 35 can drive the simulated hip 12 and the model to move upward until the spur gear 42 and the residual gear 43 are disengaged. At this time, the simulated hip 12 falls down, which can simulate the changes of the model when the user jumps, so as to detect the fixing strength of the support steel plate 2 and the superiority of anti-hip varus.

[0076] S5. In addition, when the simulated hip 12 moves up and down, the model rotates. At this time, the simulated hip 12 drives the camera 49 to move synchronously through the cooperation of the second sliding block 47 and the second fixed rod 48. At this time, the camera 49 can clearly capture the state of the model during rotation, which is used for later analysis of whether the model has inversion, so as to accurately detect the fixing strength of the support steel plate 2 and the superiority of anti-hip inversion.

[0077] However, as is well known to those skilled in the art, the working principle and wiring method of the drive motor 44 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any selections according to their needs or convenience.

[0078] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Proximal femoral anti-varus support plate, characterized in that: The invention comprises a steel plate (2) arranged on one side of a femoral model (1), wherein the femoral model (1) is composed of a femoral shaft and a femoral neck, and the femoral neck is fixed to the top of the femoral shaft, and a contact plate (3) is integrally formed on the top of the steel plate (2), and one side of the contact plate (3) is in contact with the femoral neck, and a plurality of first steel nail holes (4) and second steel nail holes (5) are respectively arranged in the steel plate (2) and the contact plate (3), and steel nails are fixed in the first steel nail holes (4) and the second steel nail holes (5) for fixing the steel plate (2) and the contact plate (3) to the femoral shaft and the femoral neck respectively; It also includes a spiral support plate (8) fixed on one side of the steel plate (2) for supporting the femoral neck. The spiral support plate (8) is provided with a plurality of fastening steel nails (9) for fixing the spiral support plate (8) to the femoral neck.

2. The proximal femoral anti-varus support steel plate and biomechanical testing instrument according to claim 1, characterized in that: The steel plate (2) and the abutment plate (3) are respectively provided with a second curved surface (7) and a first curved surface (6) on one side, and the second curved surface (7) and the first curved surface (6) enable the steel plate (2) and the abutment plate (3) to fit tightly against the femoral shaft and the femoral neck, and the inner wall of the spiral support plate (8) fits against the femoral neck, so as to support the femoral neck.

3. The proximal femoral anti-varus support steel plate and biomechanical testing instrument according to claim 2, characterized in that: The angle between the second steel nail hole (5) and the horizontal plane is between 110° and 140°.

4. A biomechanical testing instrument, used to test the proximal femoral anti-varus support steel plate according to claim 3, characterized in that: It comprises a bottom plate (10), a vertical plate (11) is fixed on the top of the bottom plate (10), a groove is provided on the top of the bottom plate (10), a screw rod (16) is rotatably connected in the groove, a push plate (15) is slidably connected to the top of the bottom plate (10), and the push plate (15) is threadedly connected to the screw rod (16); The device also comprises a simulated crotch portion (12), which is slidably arranged on one side of the vertical plate (11), and a rotating spherical groove (14) is provided on both sides of the simulated crotch portion (12), and the rotating spherical groove (14) cooperates with the femoral neck of the femoral model (1) to simulate the strength of the steel plate (2), the contact plate (3) and the spiral support plate (8) of the femoral model (1) in different states, and an L-shaped lifting plate (34) is fixed on one side of the simulated crotch portion (12), and the L-shaped lifting plate (34) slides through the vertical plate (11), and a load-bearing block (13) is provided on the top of the simulated crotch portion (12); Wherein, a first fixing rod (17) is arranged inside the pushing plate (15), and the two ends of the first fixing rod (17) are respectively connected to the corresponding femoral model (1) for rotation, and the two ends of the first fixing rod (17) are threadedly connected with bolts (18) for limiting the femoral model (1), and a rotating disk (39) is arranged on one side of the vertical plate (11), and a fixing column (40) is fixed on the side of the rotating disk (39) deviating from the center of the circle, for driving the simulated hip (12) to move up and down; The first experimental structure is arranged on the pushing plate (15) and is used to drive the simulated crotch (12) to rise and fall when the pushing plate (15) moves, so as to simulate the state of the steel plate (2) when standing up; The second experimental structure is arranged in the vertical plate (11) and is used to drive the simulated hips (12) to move up and down to simulate the state of the steel plate (2) during jumping.

5. The biomechanical experiment instrument according to claim 4, characterized in that: The first experimental structure comprises two rectangular holes (19) arranged in the push plate (15), the two rectangular holes (19) are slidably connected with a first sliding block (20), the bottoms of the two first sliding blocks (20) are fixed with a plurality of first springs (21), and the bottom ends of the first springs (21) are fixedly connected to the bottom inner walls of the rectangular holes (19), the two first sliding blocks (20) are fixedly sleeved on the outer wall of the first fixing rod (17), and the push plate (15) is away from the vertical plate (11). An L-shaped pull plate (22) is connected to the side sliding, and the L-shaped pull plate (22) is used to pull the first fixed rod (17) downward. Two fixed plates (24) are fixed on the top of the bottom plate (10), and the two fixed plates (24) are respectively located on both sides of the screw rod (16). Pins (23) are fixed on both sides of the L-shaped pull plate (22). The sides of the two fixed plates (24) close to each other are provided with track grooves (25), and the track grooves (25) cooperate with the pins (23) to control the lifting and lowering of the first fixed rod (17).

6. The biomechanical experiment instrument according to claim 5, characterized in that: The second experimental structure comprises a sliding rod (30) which slides through the vertical plate (11), and the sliding rod (30) cooperates with the pushing plate (15). The outer wall of the sliding rod (30) is fixedly sleeved with a stopper (31), and the stopper (31) is used to support and limit the simulated crotch (12). The same second spring (32) is fixed on the side where the vertical plate (11) and the stopper (31) are close to each other, and the second spring (32) is sleeved on the outer wall of the sliding rod (30). A limiting rod (33) is fixed on the side of the sliding rod (30) for limiting the stopper (31), and when the limiting rod (33) contacts the stopper (31), the femoral model (1) is in a vertical state, a push plate (37) is fixed on one end of the sliding rod (30) away from the push plate (15), a rectangular hole (36) for giving way to the push plate (37) is provided in the L-shaped lifting plate (34), a moving frame (35) is fixed on the top end of the L-shaped lifting plate (34), and the moving frame (35) cooperates with the fixed column (40) to be used for In order to drive the L-shaped lifting plate (34) to move upward, the side of the push plate (37) away from the vertical plate (11) is rotatably connected to the rotating disk (39), and one side of the vertical plate (11) is rotatably connected to a rotating shaft (38), one end of the rotating shaft (38) passes through the push plate (37) and the rotating disk (39), and the rotating shaft (38) is slidably connected to the rotating disk (39) through a sliding groove and a sliding block, and a transmission bin (45) is provided on the top of the vertical plate (11), and one end of the rotating shaft (38) is rotatably extended to the rotating disk (39). A spur gear (42) is fixed to the transmission bin (45), a driving motor (44) is fixed to the top of the vertical plate (11), a residual gear (43) is fixed to the output shaft of the driving motor (44) through a coupling, and the residual gear (43) is located in the transmission bin (45) and intermittently meshed with the spur gear (42), and is used to drive the spur gear (42) and the rotating shaft (38) to rotate intermittently, and is used to make the rotating disk (39) drive the L-shaped lifting plate (34) and the simulated crotch (12) to move up intermittently.

7. The biomechanical experiment instrument according to claim 6, characterized in that: Two fixed limit plates (28) are fixed on the top of the base plate (10), and the two fixed limit plates (28) are located on both sides of the push plate (15). The two fixed limit plates (28) are slidably connected to the sides close to each other with a support plate (27), and the support plate (27) is used to support the femoral model (1). The top of the base plate (10) is slidably connected to a trapezoidal plate (26) threadedly connected to the screw rod (16). Both ends of the bottom of the support plate (27) are provided with inclined surfaces (29), and the inclined surfaces (29) cooperate with the two inclined surfaces (29) of the trapezoidal plate (26) to drive the support plate (27) to move upward.

8. The biomechanical experiment instrument according to claim 7, characterized in that: A truncated cone (41) is fixed to one end of the fixed column (40) away from the rotating disk (39) and is used to make way for the fixed column (40) when it is inserted into the moving frame (35).

9. The biomechanical experiment instrument according to claim 8, characterized in that: Two vertical grooves (46) are provided on one side of the vertical plate (11) close to the simulated crotch (12), and the two vertical grooves (46) are respectively located on both sides of the simulated crotch (12). A second sliding block (47) is slidably connected in the two vertical grooves (46), and the outer walls of the two second sliding blocks (47) are sleeved with a second fixing rod (48). The ends of the two second fixing rods (48) close to each other are respectively fixedly connected to the two sides of the simulated crotch (12). The cooperation between the simulated crotch (12) and the second fixing rod (48) is used to control the synchronous lifting and lowering of the second sliding block (47). The ends of the two second sliding blocks (47) away from the vertical plate (11) can be detachably provided with a camera (49) for synchronously photographing the rotation of the femoral model (1), the steel plate (2), the resistance plate (3) and the spiral support plate (8) when the simulated crotch (12) is lifted and lowered.

10. The method for using the biomechanical experiment instrument according to claim 9, characterized in that: The following steps are involved: S1. Assembling the experimental model: assembling the femur model (1) with the steel plate (2), the contact plate (3) and the first steel nail hole (4); the load-bearing block (13) on the simulated hip (12) is used to simulate the weight of the user's upper body and can be adjusted to simulate the support effect under different gravity; S2, simulating sitting to standing up: by driving the motor, the left end of the model moves upward, simulating the state of the user moving from sitting to standing, so as to facilitate the subsequent upward movement of the simulated crotch (12); S3, further simulating the standing up action: when the push plate (15) moves, the L-shaped pull plate (22) moves downward, further ensuring that the left end of the model is higher than the right end, driving the simulated hip (12) to move up and down, and testing the fixing strength and anti-hip varus performance of the supporting steel plate (2); S4, simulated jumping action: the push plate (15) pushes the sliding rod (30) to move, driving the simulated hip (12) and the L-shaped lifting plate (34) to move upward, simulating the change of the model during jumping, and further testing the performance of the supporting steel plate (2); S5, shooting analysis: When simulating the up and down movement of the hips (12), the camera (49) moves synchronously to shoot the state of the model during rotation, which is used for later analysis of whether the inversion phenomenon occurs and accurately testing the performance of the supporting steel plate (2).

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