Hip joint motion stress simulator

Abstract

The utility model relates to the technical field of medical instruments, in particular to a hip joint motion stress simulator which comprises a box body, a two-degree-of-freedom electric hooke joint is installed at the bottom of the inner wall of the box body, and a motion output end of the two-degree-of-freedom electric hooke joint is installed at the top of the two-degree-of-freedom electric hooke joint. Through cooperation of a box body, a vertical cylinder, an air cylinder, a rod body, a straight cylinder, an electric push rod, an insertion block, a transverse plate, a controller, a pressure sensor, a two-degree-of-freedom electric composite hinge, a bone-imitating transmission rod, an acetabulum-imitating ball sleeve, a bone-imitating ball head, a thigh-bone-imitating supporting rod, a motion output end of a two-degree-of-freedom electric hooke joint, the two-degree-of-freedom electric hooke joint, a bottom plate, an annular plate and an impact structure, the mechanical arm is formed. When the first gear is engaged with the second gear, the second gear drives the rack to move upwards, then the plate body compresses the first spring, when the first gear and the second gear are not engaged, the plate body drives the impact rod to move downwards, then the transverse plate is impacted, simulation when the hip joint is subjected to impact pressure is facilitated, and use by workers is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a hip joint motion force simulator. Background Art

[0002] The hip joint is an extremely important part of the human skeleton. On the one hand, it plays an extremely important connecting and supporting function, and plays a connecting role in the overall skeletal structure of the human body; on the other hand, it mainly has a movement function, which can help the femur to perform a series of movements. However, due to some special stress conditions of the hip joint, it is often damaged, causing the human hip joint to be infected with corresponding diseases, which greatly affects the patient's daily life and movement. Therefore, analyzing the various stress conditions of the hip joint under daily movement postures is extremely important for preventing and treating diseases caused by hip joint stress problems.

[0003] There is an existing hip joint motion force simulator (application number: 202321396936.1) that transmits data to the controller for display through a pressure sensor, which is conducive to intuitively and conveniently obtaining the specific force conditions of the human hip joint during routine exercise, greatly improving the accuracy of the obtained data. The above-mentioned problem still exists. When simulating the force of hip joint motion, the support plate is pressed downward by force to simulate the pressure generated by the individual's weight on a single hip joint. The pressure value is sensed by the pressure sensor and the real-time pressure value is input into the controller. When the individual is exercising, such as jumping, the pressure on the hip joint is impactful, which makes it inconvenient to simulate the impact pressure on the hip joint and inconvenient for staff to use. In addition, when conducting simulation experiments, a controller needs to be used for control operations, and the controller is exposed to the outside, which is inconvenient to protect the controller when not in use. It is easy for foreign objects to hit the controller and cause damage to the controller. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art, such as being inconvenient for simulating the hip joint being subjected to impact pressure, being inconvenient for staff to use, being inconvenient for protecting the controller when not in use, and being prone to damage caused by collision with foreign objects, and to propose a hip joint motion force simulator.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A hip joint motion force simulator is designed, comprising a box, a double-degree-of-freedom electric Hooke's hinge is installed at the bottom of the inner wall of the box, a motion output end of the double-degree-of-freedom electric Hooke's hinge is installed on the top of the double-degree-of-freedom electric Hooke's hinge, the top of the motion output end of the double-degree-of-freedom electric Hooke's hinge is fixedly connected to an imitation femoral support rod, a simulation bone ball head is installed above the outer wall of the imitation femoral support rod, a simulation bone ball head is installed on the top of the simulation bone ball head, an imitation acetabulum ball sleeve is installed, the top of the imitation acetabulum ball sleeve is fixedly connected to an imitation bone transmission rod, a double-degree-of-freedom electric composite hinge is installed on the top of the imitation bone transmission rod, a pressure sensor is installed on the top of the double-degree-of-freedom electric composite hinge, a horizontal plate is installed on the top of the pressure sensor, a protrusion on one side of the rear end of the horizontal plate is slidably engaged with an annular plate, the rear end of the annular plate is fixedly connected to the rear end of the inner wall of the box, a controller is fixedly connected to the lower side of one side of the box, an impact structure is provided above the box, and a protective structure is provided on one side of the box.

[0007] Preferably, the impact structure includes a shell, the bottom of the shell is fixedly connected to the top of the box body, the upper side of the inner wall of the shell is fixedly connected to a motor, the output end of the motor is fixedly connected to gear 1, one side of the gear 1 is meshed with gear 2, the rear end of the gear 2 is rotatably connected to the rear end of the inner wall of the shell through a pin, one side of the gear 2 is meshed with a rack, and the upper side of the rack is fixedly connected to a plate body, the bottom of the plate body is fixedly connected to an impact rod, the lower side of the outer wall of the impact rod is gap-fitted with the top inner wall of the box body, and a sliding rod is slidably engaged with the inner wall of one side of the plate body, the top of the sliding rod is fixedly connected to the top of the inner wall of the shell, and a spring 1 is gap-fitted above the outer wall of the slide rod, and the upper and lower ends of the spring 1 are respectively fixedly connected to the top of the inner wall of the shell and the top of the plate body.

[0008] Preferably, the bottom of the box body is fixedly connected to a bottom plate, one side of the bottom of the inner wall of the box body is fixedly connected to a vertical cylinder, and a rod body is gap-fitted in the top inner wall of the vertical cylinder.

[0009] Preferably, the top of the rod body is fixedly connected to a straight cylinder, one end of the inner wall of the straight cylinder is fixedly connected to an electric push rod, the telescopic rod of the electric push rod is fixedly connected to an insert block, and one side of the outer wall of the insert block is gap-matched with the groove at one end of the horizontal plate.

[0010] Preferably, one side of the bottom of the straight tube is fixedly connected to the telescopic rod of the cylinder, and one end of the cylinder is fixedly connected to one end of the vertical tube.

[0011] Preferably, the protective structure includes a straight block, one end of the straight block is fixedly connected to the lower side of one side of the box body, a protective shell is fitted on the top of the straight block, the top of the protective shell is rotatably connected to a rotating rod through a pin shaft, the upper through-slot gap of the rotating rod is fitted with a straight rod, one end of the straight rod is fixedly connected to the upper side of one side of the box body, the lower side of the rotating rod is fixedly connected to a cylinder, the inner wall gap of the cylinder is fitted with an insertion rod, the upper outer wall of the insertion rod is fitted with the clearance of the bottom groove of the straight rod, the outer wall gap of the insertion rod is fitted with a spring 2, and the upper and lower ends of the spring 2 are respectively fixedly connected to the upper outer wall of the insertion rod and the inner wall bottom of the cylinder.

[0012] The utility model proposes a hip joint motion force simulator, the beneficial effects of which are: through the cooperation of the box body, vertical cylinder, cylinder, rod body, straight cylinder, electric push rod, plug block, horizontal plate, controller, pressure sensor, double-degree-of-freedom electric composite hinge, imitation bone transmission rod, imitation acetabulum ball sleeve, simulation bone ball head, imitation femoral support rod, motion output end of double-degree-of-freedom electric Hooke's hinge, double-degree-of-freedom electric Hooke's hinge, bottom plate, annular plate and impact structure, the device can, when in use, drive gear 1 to rotate by the motor, gear 1 drives gear 2 to rotate, gear 2 drives the rack to move upward, and then the plate body compresses spring 1, when gear 1 and gear 2 are not engaged, spring 1 drives the plate body to move downward, the plate body drives the impact rod to move downward, and then hits the horizontal plate, so as to facilitate the simulation of the hip joint being subjected to impact pressure and facilitate use by staff;

[0013] Through the cooperation of the box body, vertical cylinder, cylinder, rod body, straight cylinder, electric push rod, plug block, horizontal plate, controller, pressure sensor, double-degree-of-freedom electric composite hinge, imitation bone transmission rod, imitation acetabulum ball sleeve, simulation bone ball head, imitation femoral support rod, motion output end of double-degree-of-freedom electric Hooke's hinge, double-degree-of-freedom electric Hooke's hinge, bottom plate, annular plate and impact structure, when the device is in use, the protective shell can be covered on the outer wall of the controller, the rotating rod is rotated, and the straight rod enters the inner wall of the rotating rod. The spring 2 drives the plug rod to move upward, and the plug rod is inserted into the groove of the straight rod, thereby fixing the protective shell, which is convenient for protecting the controller when not in use and avoiding damage to the controller caused by foreign objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the vertical tube, cylinder and rod structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the box, bottom plate and shell structure of the utility model;

[0017] Figure 4This is a schematic diagram of the structure of the gear 2, rack and plate of the utility model;

[0018] Figure 5 This is a schematic diagram of the straight cylinder, electric push rod and plug-in block structure of the utility model;

[0019] Figure 6 This is a schematic diagram of the rotating rod, cylinder and insertion rod structure of the utility model.

[0020] In the figure: 1, box body, 2, impact structure, 2a1, motor, 2a2, gear 1, 2a3, gear 2, 2a4, rack, 2a5, plate, 2a6, impact rod, 2a7, slide rod, 2a8, housing, 2a9, spring 1, 2b1, rubber pad, 3, protection structure, 301, protection shell, 302, straight block, 303, straight rod, 304, rotating rod, 305, cylinder, 306, plug rod, 307, spring 2, 4, Vertical cylinder, 5. Cylinder, 6. Rod body, 7. Straight cylinder, 8. Electric push rod, 9. Insert block, 10. Horizontal plate, 11. Controller, 12. Pressure sensor, 13. Double-degree-of-freedom electric composite hinge, 14. Imitation bone transmission rod, 15. Imitation acetabulum ball sleeve, 16. Simulation bone ball head, 17. Imitation femoral support rod, 18. Motion output end of double-degree-of-freedom electric Hooke's joint, 19. Double-degree-of-freedom electric Hooke's joint, 20. Base plate, 21. Annular plate. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] Example 1:

[0023] Refer to the attached Figure 1-6In the present embodiment, a hip joint motion force simulator comprises a box body 1, a double-degree-of-freedom electric Hooke's hinge 19 is installed at the bottom of the inner wall of the box body 1, a motion output end 18 of the double-degree-of-freedom electric Hooke's hinge 19 is installed on the top of the double-degree-of-freedom electric Hooke's hinge 19, a top of the motion output end 18 of the double-degree-of-freedom electric Hooke's hinge 18 is fixedly connected to a simulated femoral support rod 17, a simulated bone ball head 16 is installed above the outer wall of the simulated femoral support rod 17, a dot matrix pressure sensor is installed on the outer wall of the simulated bone ball head 16, and the simulated bone The top of the ball head 16 is equipped with an acetabular ball sleeve 15, the top of the acetabular ball sleeve 15 is fixedly connected to the skeletal transmission rod 14, the top of the skeletal transmission rod 14 is equipped with a double-degree-of-freedom electric composite hinge 13, the top of the double-degree-of-freedom electric composite hinge 13 is equipped with a pressure sensor 12, the model of the pressure sensor 12 is determined according to the actual use situation, the top of the pressure sensor 12 is equipped with a horizontal plate 10, the rear end side of the horizontal plate 10 is slidably connected to the annular plate 21, the inner wall of the annular plate 21 is subjected to force on the horizontal plate 10 When the box body 1 is moved downward, it plays a limiting role. The rear end of the annular plate 21 is fixedly connected to the rear end of the inner wall of the box body 1. A controller 11 is fixedly connected to the lower side of the box body 1. The bottom of the box body 1 is fixedly connected to the bottom plate 20. One side of the bottom of the inner wall of the box body 1 is fixedly connected to the vertical cylinder 4. The top inner wall gap of the vertical cylinder 4 is matched with the rod body 6. When the rod body 6 is subjected to force, it can move up and down on the top inner wall of the vertical cylinder 4. The top of the rod body 6 is fixedly connected to the straight cylinder 7. One end of the inner wall of the straight cylinder 7 is fixedly connected to the electric push rod 8. The model of the electric push rod 8 is determined according to the actual situation. The model of the cylinder 5 is determined according to the actual usage. An impact structure 2 is provided above the box body 1, and a protective structure 3 is provided on one side of the box body 1. The impact structure 2 facilitates the simulation of the hip joint being subjected to impact pressure, which is convenient for the staff to use and the protective structure 3.

[0024] The impact structure 2 includes a shell 2a8, the bottom of the shell 2a8 is fixedly connected to the top of the box body 1, and a motor 2a1 is fixedly connected to the upper side of the inner wall of the shell 2a8. The model of the motor 2a1 depends on the actual usage. The output end of the motor 2a1 is fixedly connected to the gear 1 2a2, and one side of the gear 1 2a2 is meshed with the gear 2 2a3. The rear end of the gear 2a3 is rotatably connected to the rear end of the inner wall of the shell 2a8 through a pin shaft. The pin shaft allows the gear 2a3 to rotate at the rear end of the inner wall of the shell 2a8 when a force is applied. The gear 2 2a3 is meshed with a rack 2a4 on one side, and a plate 2a5 is fixedly connected to the upper side of the rack 2a4. The plate 2 The bottom of a5 is fixedly connected to an impact rod 2a6, and the lower outer wall of the impact rod 2a6 is gap-fitted with the top inner wall of the box body 1. A slide rod 2a7 is slidably engaged with the inner wall of one side of the plate body 2a5. The slide rod 2a7 plays a limiting role when the plate body 2a5 moves up and down under force. The top of the slide rod 2a7 is fixedly connected to the top of the inner wall of the outer shell 2a8. A spring 2a9 is gap-fitted above the outer wall of the slide rod 2a7. The spring 2a9 gives the plate body 2a5 a downward force. The upper and lower ends of the spring 2a9 are respectively fixedly connected to the top of the inner wall of the outer shell 2a8 and the top of the plate body 2a5, which is convenient for simulating the impact pressure on the hip joint and is convenient for use by staff.

[0025] The protective structure 3 includes a straight block 302, one end of which is fixedly connected to the lower side of the box body 1, and the top of the straight block 302 is fitted with a protective shell 301. The top of the protective shell 301 is rotatably connected to a rotating rod 304 through a pin. The pin allows the rotating rod 304 to rotate on the top of the protective shell 301 when a force is applied. A straight rod 303 is fitted in the clearance of the through slot above the rotating rod 304. One end of the straight rod 303 is fixedly connected to the upper side of the box body 1, and the lower side of the rotating rod 304 is fixedly connected to the cylinder 30 5. The inner wall gap of the cylinder 305 is matched with the insertion rod 306, and the upper part of the outer wall of the insertion rod 306 is matched with the gap of the bottom groove of the straight rod 303. The outer wall gap of the insertion rod 306 is matched with the spring 2 307, and the spring 2 307 gives the insertion rod 306 an upward force. The upper and lower ends of the spring 2 307 are fixedly connected to the upper part of the outer wall of the insertion rod 306 and the bottom of the inner wall of the cylinder 305 respectively, so as to protect the controller 11 when it is not in use and avoid damage to the controller 11 caused by impact of foreign objects.

[0026] Working principle:

[0027] First, when the controller 11 controls the force simulation, the electric push rod 8 starts working, and the electric push rod 8 drives the insert block 9 to move inward, so that the insert block 9 is inserted into the groove of the cross plate 10. The cylinder 5 drives the straight cylinder 7 to move downward, and then the cross plate 10 applies pressure from below. At this time, the pressure is the pressure generated by the individual target weight on a single hip joint. The pressure sensor 12 senses the pressure value and inputs the real-time pressure value into the controller 11. After the controller 11 detects that the pressure value reaches the target value, it synchronously issues instructions to control the two-degree-of-freedom electric Hooke's hinge 19 to drive the simulated femoral support rod 17, and controls the two-degree-of-freedom electric composite hinge 13 to drive the simulated iliac transmission rod 14 to rotate;

[0028] It imitates the movement posture of the femur and ilium during the movement of the human skeleton according to the input target movement trajectory, so that the simulation structure rotates and reaches the target rotation angle position, so that the simulated femoral head ball head 16 and the simulated acetabulum ball sleeve 15 complete the simulation movement of daily movement at the hip joint under the drive of the simulated femoral support rod 17 and the simulated ilium transmission rod 14. During the entire simulation movement process, the controller 11 receives the pressure value transmitted back by the pressure sensor 12 in real time. When the pressure value changes, the controller will control the cylinder 5 to operate to adjust the pressure of the simulated human gravity effect so that it is always maintained at the set target value, thereby ensuring that the downward simulation pressure provided by the entire simulation process is stable. When it is necessary to simulate the stress condition of the hip joint when simulating the impact force of jumping, the electric push rod 8 starts to work, and the electric push rod 8 drives the plug 9 to move outward, and the motor 2a1 starts to work. 2a1 drives gear 1 2a2 to rotate, gear 1 2a2 drives gear 2 2a3 to rotate, gear 2 2a3 drives rack 2a4 to move upward, and then plate 2a5 compresses spring 1 2a9. When gear 1 2a2 and gear 2 2a3 are not engaged, spring 1 2a9 drives plate 2a5 to move downward, and plate 2a5 drives impact rod 2a6 to move downward, and then hits cross plate 10, so as to facilitate simulation of the hip joint being subjected to impact pressure. When the simulation work is not being performed and the controller 11 is not in use, the protective shell 301 is covered on the outer wall of the controller 11, the rotating rod 304 is rotated, and the straight rod 303 enters the inner wall of the rotating rod 304, and the spring 2 307 drives the insertion rod 306 to move upward, and the insertion rod 306 is inserted into the groove of the straight rod 303, thereby fixing the protective shell 301, so as to protect the controller 11 when it is not in use.

[0029] Example 2:

[0030] Refer to the attached Figure 1-6 : In this embodiment, a hip joint motion force simulator is provided, wherein the impact structure 2 may further include a rubber pad 2b1, the bottom of the rubber pad 2b1 is fixedly connected to the top of the cross plate 10, and the top of the rubber pad 2b1 is in contact with the bottom of the impact rod 2a6.

[0031] Working principle:

[0032] The provision of the rubber pad 2b1 can play a buffering and protective role when the impact rod 2a6 is forced to move downward and hit the transverse plate 10, thereby avoiding damage to the transverse plate 10.

[0033] While the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A hip joint motion force simulator, comprising a box (1), characterized in that: A double-degree-of-freedom electric Hooke's joint (19) is installed at the bottom of the inner wall of the box body (1), a motion output end (18) of the double-degree-of-freedom electric Hooke's joint is installed at the top of the double-degree-of-freedom electric Hooke's joint (19), a simulated femur support rod (17) is fixedly connected to the top of the motion output end (18) of the double-degree-of-freedom electric Hooke's joint, a simulated bone ball head (16) is installed above the outer wall of the simulated femur support rod (17), an simulated acetabulum ball sleeve (15) is installed on the top of the simulated bone ball head (16), a simulated bone transmission rod (14) is fixedly connected to the top of the simulated bone transmission rod (14), and the simulated bone transmission rod (14) is fixedly connected to the top of the simulated bone transmission rod (14). A double-degree-of-freedom electric composite hinge (13) is installed on the top of the frame transmission rod (14), a pressure sensor (12) is installed on the top of the double-degree-of-freedom electric composite hinge (13), a transverse plate (10) is installed on the top of the pressure sensor (12), a ring plate (21) is slidably engaged with a protrusion on one side of the rear end of the transverse plate (10), the rear end of the ring plate (21) is fixedly connected to the rear end of the inner wall of the box body (1), a controller (11) is fixedly connected to the lower side of one side of the box body (1), an impact structure (2) is provided on the top of the box body (1), and a protective structure (3) is provided on one side of the box body (1).

2. A hip joint motion force simulator according to claim 1, characterized in that: The impact structure (2) comprises a shell (2a8), the bottom of the shell (2a8) is fixedly connected to the top of the box body (1), a motor (2a1) is fixedly connected to the upper side of the inner wall of the shell (2a8), the output end of the motor (2a1) is fixedly connected to a gear 1 (2a2), one side of the gear 1 (2a2) is meshedly connected to a gear 2 (2a3), the rear end of the gear 2 (2a3) is rotatably connected to the rear end of the inner wall of the shell (2a8) via a pin shaft, one side of the gear 2 (2a3) is meshedly connected to a rack (2a4), and one side of the rack (2a4) is meshedly connected to a gear 2 (2a3). A plate body (2a5) is fixedly connected to the side, an impact rod (2a6) is fixedly connected to the bottom of the plate body (2a5), the outer wall of the impact rod (2a6) is clearance-matched with the top inner wall of the box body (1) at the bottom, a slide rod (2a7) is slidably engaged with the inner wall of one side of the plate body (2a5), the top of the slide rod (2a7) is fixedly connected to the top of the inner wall of the outer shell (2a8), a spring (2a9) is clearance-matched on the upper part of the outer wall of the slide rod (2a7), and the upper and lower ends of the spring (2a9) are respectively fixedly connected to the top of the inner wall of the outer shell (2a8) and the top of the plate body (2a5).

3. A hip joint motion force simulator according to claim 1, characterized in that: The bottom of the box body (1) is fixedly connected to a bottom plate (20), the bottom side of the inner wall of the box body (1) is fixedly connected to a vertical tube (4), and the top inner wall of the vertical tube (4) is gap-fitted with a rod body (6).

4. A hip joint motion force simulator according to claim 3, characterized in that: The top of the rod body (6) is fixedly connected to a straight tube (7), one end of the inner wall of the straight tube (7) is fixedly connected to an electric push rod (8), the telescopic rod of the electric push rod (8) is fixedly connected to an insert block (9), and one side of the outer wall of the insert block (9) is gap-matched with a groove at one end of the horizontal plate (10).

5. A hip joint motion force simulator according to claim 4, characterized in that: One side of the bottom of the straight tube (7) is fixedly connected to the telescopic rod of the cylinder (5), and one end of the cylinder (5) is fixedly connected to one end of the vertical tube (4).

6. A hip joint motion force simulator according to claim 1, characterized in that: The protective structure (3) comprises a straight block (302), one end of the straight block (302) is fixedly connected to the lower side of one side of the box body (1), the top of the straight block (302) is fitted with a protective shell (301), the top of the protective shell (301) is rotatably connected to a rotating rod (304) via a pin, a straight rod (303) is gap-fitted in a through slot above the rotating rod (304), one end of the straight rod (303) is fixedly connected to the upper side of one side of the box body (1), A cylinder (305) is fixedly connected to the lower side of one side of the rotating rod (304), an insertion rod (306) is fitted in the inner wall gap of the cylinder (305), an outer wall upper part of the insertion rod (306) is fitted in the bottom groove gap of the straight rod (303), a spring 2 (307) is fitted in the outer wall gap of the insertion rod (306), and the upper and lower ends of the spring 2 (307) are respectively fixedly connected to the outer wall upper part of the insertion rod (306) and the inner wall bottom of the cylinder (305).

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