Cartilage compression shear stress damage modeling device

Abstract

The invention relates to the technical field of cartilage injury modeling, and discloses a cartilage compression shear stress injury modeling device, which comprises a main body assembly, a working table and a control mechanism, and the control mechanism is arranged on the working table; and the mold making assembly is located on the workbench and comprises a mold making part. The device has the beneficial effects that vertical compression force and shear stress can be regularly and quantitatively applied to an experimental subject, a pressure sensor and a shear stress sensor are added, various data in the experimental process can be monitored in real time, the cartilage injury degree can be accurately controlled, and the experimental accuracy is improved. Therefore, cartilage compression shear stress damage conditions of different degrees can be simulated more accurately, a reliable experimental model is provided for related research, meanwhile, the device is stably fixed to the base, and the angle and height of the device relative to the base can be adjusted, so that the modeling device can be accurately aligned with the cartilage surface of an experimental object.

Description

Technical Field

[0001] The present invention relates to the technical field of cartilage injury modeling, and in particular to a cartilage compression shear stress injury modeling device. Background Art

[0002] Cartilage compression shear stress injury is a type of cartilage injury caused by mechanical load. During joint movement, cartilage is subjected to forces from multiple directions, including compression and shear forces. This type of injury is common in sports injuries or cases where joints are abnormally stressed for a long time. Constructing a cartilage compression shear stress injury model is of great significance for understanding the pathophysiological mechanisms of articular cartilage, preventing and treating related diseases. Currently, animal models mostly rely on surgical operations or external pressure loading, and the degree of injury is not easily controlled precisely. There is a lack of a quantifiable cartilage compression shear stress injury modeling tool, and it is difficult to precisely control the magnitude, direction, frequency, and action time of the force when applying compression and shear stress. This uncertainty leads to large variability in the results between different experiments, poor accuracy and repeatability of experimental data, making it difficult for researchers to evaluate the intervention effects of different drugs or treatment strategies at different stages of cartilage injury, resulting in increased uncertainty of experimental results. Summary of the Invention

[0003] In view of the problems existing in the existing cartilage compression shear stress injury modeling devices as described above, the present invention is proposed.

[0004] Therefore, the problem to be solved by the present invention is that when simulating cartilage compression shear stress injury, there is a lack of a quantifiable cartilage compression shear stress injury modeling tool, and it is difficult to precisely control the magnitude, direction, frequency, and action time of the force when applying compression and shear stress, which reduces the accuracy of the experiment.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A cartilage compression shear stress injury modeling device, which includes a main body component, including a workbench and a control mechanism, and the control mechanism is arranged on the workbench;

[0006] A modeling component, located on the workbench, includes a modeling member, and the modeling member includes a housing, a cylinder, a connecting column, a sleeve, a conical platform, a compression head, a motor, a first gear, a second gear, and a rotating column. The housing is located on one side of the control mechanism, the cylinder is located inside the housing, the connecting column is fixed to one end of the cylinder, the sleeve is sleeved outside the connecting column, the conical platform is fixed to one end of the sleeve, the compression head is fixed to the bottom of the conical platform, the motor is arranged inside the housing, the first gear is fixed outside the sleeve, the second gear meshes with the first gear, the rotating column is fixed to one end of the motor, and the other end is fixed to the second gear;

[0007] An adjusting assembly is arranged on one side of the control mechanism and includes an adjusting member. The adjusting member includes a first threaded rod, a second threaded rod, a rotating sleeve, a connecting block, a sphere, and a fixing block. The first threaded rod is fixed to the bottom of the control mechanism. The second threaded rod is located on one side of the first threaded rod. The rotating sleeve is sleeved outside the first threaded rod and the second threaded rod. The connecting block is fixed to the bottom of the second threaded rod. The sphere is fixed on the connecting block. The fixing block is fixed on the workbench. A rotating groove is formed in the fixing block, and the sphere slides in the rotating groove.

[0008] As a preferred scheme of the cartilage compression shear stress injury modeling device of the present invention, wherein: a first moving groove is formed in the fixing block, an extrusion block is arranged in the first moving groove, one end of the extrusion block is fixed with a first spring, the other end of the first spring is fixed to the inner wall of the first moving groove, and a push plate is fixed to one end of the extrusion block.

[0009] As a preferred scheme of the cartilage compression shear stress injury modeling device of the present invention, wherein: the adjusting assembly further includes a locking member arranged in the fixing block and includes a locking block, a second spring, and a pulling rope. A second moving groove is formed in the fixing block, the locking block slides in the second moving groove, both ends of the second spring are fixed to the locking block and the inner wall of the second moving groove, the pulling rope is fixed to one side of the locking block, a locking groove is formed in the extrusion block, and the locking block can be engaged with the locking groove.

[0010] As a preferred scheme of the cartilage compression shear stress injury modeling device of the present invention, wherein: a lifting groove is formed in the sleeve, and a clamping block is fixed on the first gear. The clamping block slides in the lifting groove.

[0011] As a preferred scheme of the cartilage compression shear stress injury modeling device of the present invention, wherein: a rubber block is fixed to one end of the extrusion block, and the rubber block can be closely attached to the sphere.

[0012] As a preferred scheme of the cartilage compression shear stress injury modeling device of the present invention, wherein: the surface of the sphere has a large roughness and has a large friction with the rubber block.

[0013] As a preferred scheme of the cartilage compression shear stress injury modeling device of the present invention, wherein: a pressure sensor and a shear stress sensor are fixed to the bottom of the conical platform.

[0014] As a preferred scheme of the cartilage compression shear stress injury modeling device of the present invention, wherein: the compression head is hemispherical and is made of a high-hardness alloy material.

[0015] As a preferred embodiment of the cartilage compression shear stress injury modeling device of the present invention, the following is provided: A support plate is fixed outside the cylinder, and the other end of the support plate is fixed to the inner wall of the housing.

[0016] As a preferred embodiment of the cartilage compression shear stress injury modeling device of the present invention, the following is provided: A support ring is fixed outside the motor, and the other end of the support ring is fixed to the inner wall of the housing.

[0017] The beneficial effects of the present invention are as follows: This device can apply vertical compression force and shear stress to the experimental object regularly and quantitatively. By adding pressure and shear stress sensors, it can monitor various data in real time during the experiment, enabling precise control of the degree of cartilage injury. Thus, it can more accurately simulate different degrees of cartilage compression shear stress injury conditions, providing a reliable experimental model for related research. At the same time, the device is stably fixed on the base, and the angle and height of the device relative to the base can be adjusted, enabling the modeling device to accurately align with the cartilage surface of the experimental object. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0019] Figure 1 It is an overall view of the cartilage compression shear stress injury modeling device.

[0020] Figure 2 It is for the Figure 1 Partial enlarged structural view at position A of the cartilage compression shear stress injury modeling device.

[0021] Figure 3 It is a sectional structural view of the housing of the cartilage compression shear stress injury modeling device.

[0022] Figure 4 It is a sectional structural view of the clamping block of the cartilage compression shear stress injury modeling device.

[0023] Figure 5 It is a sectional structural view of the extrusion block of the cartilage compression shear stress injury modeling device.

[0024] Figure 6 It is a sectional structural view of the sphere of the cartilage compression shear stress injury modeling device.

[0025] Figure 7 It is for the Figure 6 Partial enlarged structural view at position B of the cartilage compression shear stress injury modeling device. Detailed Embodiments

[0026] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following provides a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings of the specification.

[0027] In the following description, many specific details are set forth to facilitate a thorough understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0028] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present invention. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they separate or alternative embodiments that exclude each other with other embodiments.

[0029] Embodiment 1

[0030] Referring to Figures 1 - 7 , this is the first embodiment of the present invention. This embodiment provides a device for creating a model of cartilage compression shear stress injury. The device for creating a model of cartilage compression shear stress injury includes a main body assembly 100, which includes a workbench 101 and a control mechanism 102. The control mechanism 102 is disposed on the workbench 101.

[0031] When starting the experiment, the experimental subject is placed on the workbench 101. The control mechanism 102 can receive the data from the sensors, analyze and process this data, and give feedback. This is prior art and will not be elaborated much in this solution. Moreover, those skilled in the art can clearly understand this working principle.

[0032] A modeling assembly 200 is located on the workbench 101 and includes a modeling member 201. The modeling member 201 includes a housing 201a, a cylinder 201b, a connecting column 201c, a sleeve 201d, a tapered table 201e, a compression head 201f, a motor 201g, a first gear 201h, a second gear 201i, and a rotating column 201j. The housing 201a is located on one side of the control mechanism 102. The cylinder 201b is located inside the housing 201a. The connecting column 201c is fixed to one end of the cylinder 201b. The sleeve 201d is sleeved outside the connecting column 201c. The tapered table 201e is fixed to one end of the sleeve 201d. The compression head 201f is fixed to the bottom of the tapered table 201e. The motor 201g is disposed inside the housing 201a. The first gear 201h is fixed outside the sleeve 201d. The second gear 201i meshes with the first gear 201h. The rotating column 201j is fixed to one end of the motor 201g and is fixed to the second gear 201i at the other end.

[0033] Through the setting of the modeling component 201, a timed and quantified vertical compression force and shear stress are applied to simulate the pressure damage of cartilage under joint loads.

[0034] Both the first gear 201h and the second gear 201i are connected to the inner wall of the housing 201a by bearings. An auxiliary plate 103 is fixed to the top of the housing 201a. One side of the auxiliary plate 103 is fixed with a connecting rod 104, and one end of the connecting rod 104 is fixed to the control mechanism 102.

[0035] The cylinder 201b is used to drive the connecting column 201c to move. The other end of the connecting column 201c is connected to the conical platform 201e by a bearing. When the control mechanism 102 sends a start signal to the cylinder 201b, the cylinder 201b starts, driving the conical platform 201e to move up and down, and the compression head 201f moves accordingly, thereby applying a vertical compression force to the experimental object.

[0036] The motor 201g is used to drive the sleeve 201d to rotate. The rotating column 201j is connected to the motor shaft of the motor 201g. When the control mechanism 102 starts the motor 201g, it will drive the rotating column 201j to rotate, and then drive the second gear 201i to rotate. Since the first gear 201h and the second gear 201i are meshed, the first gear 201h will rotate synchronously. At this time, the first gear 201h will drive the sleeve 201d to rotate, and then the conical platform 201e and the compression head 201f will rotate synchronously, so as to apply a shear stress to the experimental object and simulate the pressure damage of cartilage under joint loads.

[0037] After the cylinder 201b starts, the control mechanism 102 will send a start signal to the motor 201g. Thus, a vertical compression force is first generated on the experimental object, and then a shear stress is formed by rotation, further simulating the compression shear stress damage suffered by articular cartilage during movement. The control mechanism 102 can adjust the stroke of the cylinder 201b and the rotation speed of the motor 201g, so as to accurately control the compression force and shear stress, meet the quantification standard, and improve the accuracy of experimental data.

[0038] The adjusting assembly 300 is arranged on one side of the control mechanism 102 and includes an adjusting member 301. The adjusting member 301 includes a first threaded rod 301a, a second threaded rod 301b, a rotating sleeve 301c, a connecting block 301d, a sphere 301e and a fixing block 301f. The first threaded rod 301a is fixed to the bottom of the control mechanism 102. The second threaded rod 301b is located on one side of the first threaded rod 301a. The rotating sleeve 301c is sleeved outside the first threaded rod 301a and the second threaded rod 301b. The connecting block 301d is fixed to the bottom of the second threaded rod 301b. The sphere 301e is fixed on the connecting block 301d. The fixing block 301f is fixed on the workbench 101. A rotating groove 301f-1 is formed on the fixing block 301f, and the sphere 301e slides in the rotating groove 301f-1.

[0039] By setting the adjustment member 301, the angle and height adjustment of the molding member 201 can be precisely controlled according to the specific position of the cartilage of the experimental subject and the experimental requirements, ensuring that the molding member 201 can be accurately aligned with the cartilage surface, thereby improving the accuracy and operability of the experiment.

[0040] The thread directions of the first threaded rod 301a and the second threaded rod 301b are opposite, and a thread groove corresponding to the first threaded rod 301a and the second threaded rod 301b is opened in the rotating sleeve 301c. Rotating the rotating sleeve 301c can make the first threaded rod 301a and the second threaded rod 301b approach or move away from each other, thereby changing the vertical height of the molded part 201 to adapt to experimental objects of different sizes.

[0041] The connecting block 301d is used to connect the sphere 301e to the second threaded rod 301b. The shape of the rotating groove 301f-1 corresponds to the sphere 301e. The sphere 301e can rotate a certain angle therein. The top diameter of the rotating groove 301f-1 is smaller than the diameter of the sphere 301e, so that the sphere 301e will not escape from the rotating groove 301f-1. At the same time, the inner surface of the rotating groove 301f-1 also has a large roughness, and a certain thrust needs to be applied to make the sphere 301e rotate in the rotating groove 301f-1.

[0042] Through the cooperation between the sphere 301e and the rotating groove 301f-1, whether it is experimental subjects of different body shapes and different parts, or injury simulation at different positions on the cartilage surface, precise operation can be achieved by flexibly adjusting the angle and height of the molding part 201, which greatly improves the applicability and versatility of the device.

[0043] Example 2

[0044] Reference Figures 1 - 7 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0045] Specifically, a first movable groove 301f-2 is opened in the fixed block 301f, and an extrusion block 301g is arranged in the first movable groove 301f-2. A first spring 301h is fixed to one end of the extrusion block 301g, and the other end of the first spring 301h is fixed to the inner wall of the first movable groove 301f-2. A push plate 301i is fixed to one end of the extrusion block 301g.

[0046] The extrusion block 301g is set to limit the rotation of the ball 301e in the rotating groove 301f-1, and push the push plate 301i to drive the extrusion block 301g to move. The extrusion block 301g applies an extrusion force to the ball 301e. Through the friction between the two, the ball 301e is prevented from rotating again in the rotating groove 301f-1 after the molded part 201 moves to the appropriate position, thereby affecting the experimental process.

[0047] The first spring 301h applies a continuous pulling force to the extrusion block 301g for restoring the extrusion block 301g. When the extrusion block 301g extrudes the sphere 301e, the first spring 301h will be stretched. After that, without other external forces, the first spring 301h will pull the extrusion block 301g back to its initial position.

[0048] Specifically, the adjusting assembly 300 further includes a locking member 302 disposed in the fixed block 301f, which includes a locking block 302a, a second spring 302b, and a pulling rope 302c. A second moving groove 301f-3 is formed in the fixed block 301f. The locking block 302a slides in the second moving groove 301f-3. Both ends of the second spring 302b are fixed to the locking block 302a and the inner wall of the second moving groove 301f-3. The pulling rope 302c is fixed to one side of the locking block 302a. A locking groove 301g-1 is formed on the extrusion block 301g, and the locking block 302a can be engaged with the locking groove 301g-1.

[0049] By providing the locking member 302, the movement of the extrusion block 301g is restricted, thereby locking the position of the sphere 301e in the rotation groove 301f-1 and preventing the position of the sphere 301e from shifting.

[0050] One end of the locking block 302a is inclined. The shape of the locking groove 301g-1 corresponds to that of the locking block 302a, and there are multiple such locking grooves. In the initial state, that is, when the first spring 301h is in a relaxed state, the locking block 302a is engaged with one of the locking grooves 301g-1. Through the inclined setting, when the extrusion block 301g moves in the direction close to the sphere 301e, the inclined surface of the locking groove 301g-1 will squeeze the inclined surface of the locking block 302a, so that the second spring 302b is compressed, and the locking block 302a will move into the second moving groove 301f-3, and the locking block 302a is separated from the locking groove 301g-1. The locking block 302a will not hinder the movement of the extrusion block 301g, and thus the extrusion block 301g can extrude the sphere 301e.

[0051] When the extrusion block 301g moves in the direction away from the sphere 301e, the right-angle surface of the locking groove 301g-1 contacts and squeezes the right-angle surface of the locking block 302a. At this time, the second spring 302b will not be compressed, and the locking block 302a and the locking groove 301g-1 are still in an engaged state, and the extrusion block 301g is locked and cannot move away from the sphere 301e.

[0052] The pulling rope 302c is used to unlock the locking of the extrusion block 301g. By pulling the pulling rope 302c, the second spring 302b will be compressed, and the locking block 302a is separated from the locking groove 301g-1. The locking block 302a will not restrict the movement of the extrusion block 301g. At this time, under the pulling of the first spring 301h, the extrusion block 301g is restored to its initial position.

[0053] Specifically, a lifting groove 201d-1 is formed on the sleeve 201d, and a clamping block 201k is fixed on the first gear 201h. The clamping block 201k slides in the lifting groove 201d-1.

[0054] There are two clamping blocks 201k, which are symmetrically distributed on the first gear 201h. Through the cooperation of the lifting groove 201d-1 and the clamping block 201k, when the cylinder 201b drives the sleeve 201d and the tapered table 201e to move vertically, the clamping block 201k will slide in the lifting groove 201d-1. At the same time, the motor 201g drives the second gear 201i to rotate, and makes the first gear 201h rotate. At this time, the first gear 201h will drive the sleeve 201d to rotate synchronously, so that the tapered table 201e and the compression head 201f complete vertical and rotational movements, and the two will not affect each other.

[0055] Specifically, a rubber block 301j is fixed at one end of the extrusion block 301g, and the rubber block 301j can be closely attached to the sphere 301e.

[0056] When the extrusion block 301g approaches the sphere 301e, it will drive the rubber block 301j to approach the sphere 301e synchronously. The rubber block 301j will be compressed and squeeze the sphere 301e. Through the large friction between the rubber block 301j and the sphere 301e, the rotation of the sphere 301e in the rotation groove 301f-1 is restricted, avoiding the sphere 301e rotating again after the molding part 201 moves to the appropriate position and affecting the experiment.

[0057] Specifically, the surface roughness of the sphere 301e is relatively large, and there is a large friction between the sphere 301e and the rubber block 301j.

[0058] Due to the large friction between the sphere 301e and the rubber block 301j, there is also a large friction between the sphere 301e and the rotation groove 301f-1. And under the action of the extrusion block 301g, the rubber block 301j deforms and always closely adheres to the sphere 301e, so as to ensure that the sphere 301e will not rotate randomly in the rotation groove 301f-1.

[0059] Embodiment 3

[0060] Refer to Figures 1 - 7 , which is the third embodiment of the present invention, and this embodiment is based on the first two embodiments.

[0061] Specifically, a pressure sensor 201l and a shear stress sensor 201m are fixed at the bottom of the tapered table 201e.

[0062] The pressure sensor 201l and the shear stress sensor 201m can monitor in real time and transmit data to the control mechanism 102 to adjust the pressure. This is the prior art and will not be elaborated in this solution. Those skilled in the art can clearly understand the working principle.

[0063] Specifically, the compression head 201f is hemispherical and made of a high-hardness alloy material.

[0064] The high-hardness alloy material has wear resistance, increasing the service life of the compression head 201f.

[0065] Specifically, a support plate 201n is fixed outside the cylinder 201b, and the other end of the support plate 201n is fixed to the inner wall of the housing 201a.

[0066] There are two support plates 201n to stably support the cylinder 201b.

[0067] Specifically, a support ring 201o is fixed outside the motor 201g, and the other end of the support ring 201o is fixed to the inner wall of the housing 201a.

[0068] The support ring 201o is used to provide stable support for the motor 201g.

[0069] During use, place the experimental object on the workbench 101. Then adjust the position of the modeling part 201. The researcher holds the housing 201a by hand and adjusts the housing 201a so that the conical table 201e and the compression head 201f are in appropriate positions. The sphere 301e will rotate in the rotation groove 301f-1. Then push the push plate 301i to drive the extrusion block 301g to move. The extrusion block 301g exerts an extrusion force on the sphere 301e, and the rubber block 301j deforms and always fits tightly with the sphere 301e. When the extrusion block 301g moves in the direction close to the sphere 301e, the inclined plane of the locking groove 301g-1 will squeeze the inclined plane of the locking block 302a, so that the second spring 302b is compressed. The locking block 302a will move into the second moving groove 301f-3, and the locking block 302a is separated from the locking groove 301g-1. The locking block 302a will not hinder the movement of the extrusion block 301g. Thus, the extrusion block 301g can extrude the sphere 301e. When the locking block 302a is again in the coaxial position with a locking groove 301g-1, the restoration of the second spring 302b will drive the locking block 302a and the locking groove 301g-1 to move. The right-angle surface of the locking groove 301g-1 contacts and squeezes the right-angle surface of the locking block 302a. At this time, the second spring 302b will not be compressed, and the locking block 302a and the locking groove 301g-1 are still in the engaged state. The extrusion block 301g is locked and cannot move away from the sphere 301e. Under the action of the friction between the rubber block 301j and the sphere 301e, it is ensured that the sphere 301e will not rotate randomly in the rotation groove 301f-1.

[0070] When it is necessary to adjust the height of the tapered table 201e relative to the workbench 101 with respect to the compression head 201f, rotating the rotating sleeve 301c can cause the first threaded rod 301a and the second threaded rod 301b to approach or move away from each other, thereby changing the vertical height of the molding member 201 to adapt to experimental objects of different sizes.

[0071] After the position adjustment of the compression head 201f is completed, the control mechanism 102 sends a start signal to the air cylinder 201b. When the air cylinder 201b starts, it will drive the tapered table 201e to move up and down, and the compression head 201f will move accordingly, thereby applying a vertical compression force to the experimental object. After the air cylinder 201b starts, the control mechanism 102 will then send a start signal to the motor 201g, which will drive the rotating column 201j to rotate, and then drive the second gear 201i to rotate. Since the first gear 201h meshes with the second gear 201i, the first gear 201h will rotate synchronously. At this time, the first gear 201h will drive the sleeve 201d to rotate, thereby causing the tapered table 201e and the compression head 201f to rotate synchronously to apply a shear stress to the experimental object and simulate the pressure damage of cartilage under joint load.

[0072] When it is necessary to change the direction of the compression head 201f again, pulling the pull rope 302c will compress the second spring 302b, and the locking block 302a will be separated from the locking groove 301g-1. The locking block 302a will no longer restrict the movement of the extrusion block 301g. At this time, under the pull of the first spring 301h, the extrusion block 301g will return to its initial position, and the rubber block 301j will no longer contact the sphere 301e. At this time, pushing the housing 201a forcefully will cause the sphere 301e to rotate in the rotating groove 301f-1, thereby changing the direction of the compression head 201f.

[0073] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A cartilage compression shear stress injury modeling device, characterized in that: including, a main body component (100), including a workbench (101) and a control mechanism (102), the control mechanism (102) being arranged on the workbench (101); a molding component (200), located on the workbench (101), including a molding member (201), the molding member (201) including a housing (201a), a cylinder (201b), a connecting column (201c), a sleeve (201d), a tapered table (201e), a compression head (201f), a motor (201g), a first gear (201h), a second gear (201i), and a rotating column (201j), the housing (201a) being located on one side of the control mechanism (102), the cylinder (201b) being located inside the housing (201a), the connecting column (201c) being fixed to one end of the cylinder (201b), the sleeve (201d) being sleeved outside the connecting column (201c), the tapered table (201e) being fixed to one end of the sleeve (201d), the compression head (201f) being fixed to the bottom of the tapered table (201e), the motor (201g) being arranged inside the housing (201a), the first gear (201h) being fixed outside the sleeve (201d), the second gear (201i) being meshed with the first gear (201h), and the rotating column (201j) being fixed to one end of the motor (201g) and the other end being fixed to the second gear (201i); an adjusting component (300), arranged on one side of the control mechanism (102), including an adjusting member (301), the adjusting member (301) including a first threaded rod (301a), a second threaded rod (301b), a rotating sleeve (301c), a connecting block (301d), a sphere (301e), and a fixing block (301f), the first threaded rod (301a) being fixed to the bottom of the control mechanism (102), the second threaded rod (301b) being located on one side of the first threaded rod (301a), the rotating sleeve (301c) being sleeved outside the first threaded rod (301a) and the second threaded rod (301b), the connecting block (301d) being fixed to the bottom of the second threaded rod (301b), the sphere (301e) being fixed to the connecting block (301d), the fixing block (301f) being fixed to the workbench (101), a rotating groove (301f-1) being formed in the fixing block (301f), and the sphere (301e) sliding inside the rotating groove (301f-1).

2. The cartilage compression shear stress injury modeling device according to claim 1, characterized in that: a first moving groove (301f-2) is formed in the fixing block (301f), an extrusion block (301g) is arranged inside the first moving groove (301f-2), a first spring (301h) is fixed to one end of the extrusion block (301g), the other end of the first spring (301h) is fixed to the inner wall of the first moving groove (301f-2), and a push plate (301i) is fixed to one end of the extrusion block (301g).

3. The cartilage compression shear stress injury modeling device according to claim 2, wherein: The adjusting assembly (300) further includes a locking member (302) disposed within the fixing block (301f), which includes a locking block (302a), a second spring (302b), and a pulling rope (302c). A second moving groove (301f-3) is formed in the fixing block (301f). The locking block (302a) slides within the second moving groove (301f-3). Both ends of the second spring (302b) are fixed to the locking block (302a) and the inner wall of the second moving groove (301f-3). The pulling rope (302c) is fixed to one side of the locking block (302a). A locking groove (301g-1) is formed in the pressing block (301g), and the locking block (302a) can be engaged with the locking groove (301g-1).

4. The cartilage compression shear stress injury modeling device according to claim 3, wherein: A lifting groove (201d-1) is formed in the sleeve (201d). A clamping block (201k) is fixed to the first gear (201h), and the clamping block (201k) slides within the lifting groove (201d-1).

5. The cartilage compression shear stress injury modeling device according to claim 4, characterized in that: One end of the pressing block (301g) is fixed with a rubber block (301j), and the rubber block (301j) can be in close contact with the sphere (301e).

6. The cartilage compression shear stress injury modeling device according to claim 5, characterized in that: The surface of the sphere (301e) has a large surface roughness and has a large friction with the rubber block (301j).

7. The cartilage compression shear stress injury modeling device according to claim 5 or 6, characterized in that: A pressure sensor (201l) and a shear stress sensor (201m) are fixed to the bottom of the conical platform (201e).

8. The cartilage compression shear stress injury modeling device according to claim 7, wherein: The compression head (201f) is hemispherical and is made of a high-hardness alloy material.

9. The cartilage compression shear stress injury modeling device according to claim 8, characterized in that: A support plate (201n) is fixed to the outside of the cylinder (201b), and the other end of the support plate (201n) is fixed to the inner wall of the housing (201a).

10. The cartilage compression shear stress injury modeling device according to claim 8 or 9, characterized in that: A support ring (201o) is fixed to the outside of the motor (201g), and the other end of the support ring (201o) is fixed to the inner wall of the housing (201a).

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