Animal bone cartilage injury impactor

Abstract

The invention provides an animal osteochondral injury impactor. The animal osteochondral injury impactor comprises a main body module, an operation module, an impact module and an adjusting module. An impact hole and an installation hole are formed in the two opposite ends of the main body module and communicate with each other through an installation cavity in the main body module. The side wall of the main body module is provided with a sliding groove and an operation hole which are both communicated with the installation cavity. The sliding grooves and the operation holes are formed in the outer wall of the main body module at intervals. The operation module comprises a trigger, a first pin and a reset piece. The trigger is rotationally connected to the hole wall of the operation hole through a first pin, and the two opposite ends of the trigger are provided with a clamping hook and an operation arm correspondingly. By means of force storage and force adjustment, more real impact injury can be generated on the cartilage surface of an animal bone, a clinical real injury environment is simulated, impact energy is transmitted to a subchondral bone from the cartilage after being generated on the cartilage surface, and then injury to the cartilage and the subchondral bone can be generated. The accuracy and the high efficiency of osteochondral injury research are favorably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of scientific research tools, and particularly to an impactor for animal osteochondral injury. Background Art

[0002] Osteochondral injury is a lesion involving articular cartilage and subchondral bone. Compared with simple cartilage injury, osteochondral injury involving both articular cartilage and subchondral bone is more common in clinical practice. The joint surface is completely covered by cartilage. Once damaged, due to the poor self-repair ability of cartilage, it is very difficult to completely repair. Without treatment and intervention, it is generally difficult to heal on its own, and in severe cases, it will cause degeneration of articular cartilage and subchondral bone. This not only brings a heavy life and economic burden to the patient himself, but also brings a serious burden to social medical care. Therefore, the research on osteochondral injury is very necessary.

[0003] Healthy subchondral bone provides mechanical and nutritional support for cartilage, and diseased subchondral bone will lead to further degeneration of cartilage. Osteochondral injury is caused by direct or indirect violent forces on the bone and joint, and its MRI imaging shows local abnormal signals in articular cartilage and subchondral bone.

[0004] Currently, for osteochondral injury, most of the modeling methods are to use local osteochondral resection or trephine removal, which is quite different from the actual disease environment of patients encountered in clinical practice. Second, the trephine method for osteochondral injury modeling removes locally, and the scope is too limited and definite. Third, the trephine method for osteochondral injury modeling has healthy cartilage and subchondral bone around. In actual clinical situations, local osteochondral injury may exist in some areas in a sub-healthy state after partial resection, and the real osteochondral injury cannot be simulated. Summary of the Invention

[0005] The present invention provides an impactor for animal osteochondral injury to solve the above technical problems.

[0006] An impactor for animal osteochondral injury, the impactor for animal osteochondral injury comprising: a main body module, wherein impact holes and mounting holes are formed at opposite ends of the main body module, the impact holes and the mounting holes are communicated through a mounting cavity inside the main body module, and a sliding groove and an operation hole which are both communicated with the mounting cavity are respectively formed in the side wall of the main body module; an operation module, the operation module comprising a trigger, a first pin and a reset member, the trigger is rotatably connected to the hole wall of the operation hole through the first pin, and a hook and an operation arm are respectively arranged at opposite ends of the trigger, and the operation arm is reset and matched with the outer wall of the main body module through the reset member; an impact module, the impact module comprising an impact rod, a handle, a power storage member and an impact slider, the impact rod and the handle are vertically arranged and both connected to the impact slider, the impact rod and the impact slider are both arranged in the mounting cavity, the handle extends outwards through the sliding groove and is slidably matched with the sliding groove, a hook groove is arranged on the impact slider, and the hook is hooked and matched with the hook groove, and the power storage member is arranged in the mounting cavity and is located at one end of the impact slider away from the impact rod; and an adjustment module, the adjustment module comprising an adjustment knob, an adjustment slider and a screw rod, the adjustment knob is arranged in the mounting hole, the screw rod is connected to the adjustment knob, the adjustment slider is slidably matched with the screw rod, the screw rod and the adjustment slider are located in the mounting cavity, and opposite ends of the power storage member respectively abut against the impact slider and the adjustment slider.

[0007] Preferably, there are two sliding grooves which are symmetrically arranged along the axis of the main body module, and there are two handles which are arranged in one-to-one correspondence with the two sliding grooves.

[0008] Preferably, the main body module comprises a first main body member, a second main body member and a second pin, the impact hole is formed in the first main body member, the mounting cavity and the mounting hole are formed in the second main body member, the first main body member and the second main body member are pin-connected through the second pin, and the impact hole is in guiding cooperation with the impact rod.

[0009] Preferably, along the impact direction of the impact rod, starting from one end close to the mounting cavity, the outer diameter of the first main body member gradually decreases.

[0010] Preferably, an impact tip is arranged at one end of the impact rod away from the impact slider.

[0011] Preferably, the adjustment slider is provided with a guiding groove, and a limiting screw is arranged on the inner wall of the mounting cavity, and the limiting screw is in guiding cooperation with the guiding groove.

[0012] Preferably, a scale line is provided on the side of the adjustment slider facing away from the guide groove. The scale lines are arranged at intervals along the length direction of the adjustment slider. An observation window is formed on the outer wall of the main body module. The observation window communicates with the installation cavity and is used to observe the scale lines.

[0013] Preferably, the adjustment knob includes a retaining piece, a retaining ring and a knob body. The retaining piece and the retaining ring are sleeved on the screw rod. The end of the screw rod away from the impact rod is fixedly connected to the knob body. The retaining ring is provided with an external thread and is connected to the main body module through the external thread. The retaining piece is fixed on the screw rod and is located on the side of the retaining ring away from the knob body.

[0014] Preferably, a ball detent is provided on the side of the knob body close to the retaining ring. A plurality of V-shaped grooves extending radially are formed on the side of the retaining ring facing the knob body. The ball detent is in abutting fit with the V-shaped grooves.

[0015] Preferably, a plurality of grooves are formed on the outer wall of the knob body at intervals in the circumferential direction.

[0016] Other features and advantages of the present invention will be set forth in the following description, and in part will be obvious from the description, or may be learned by practice of the present invention. The objectives and other advantages of the present invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

[0017] The technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Description of the Drawings

[0018] The drawings are provided to further understand the present invention and constitute a part of the specification. They are used in conjunction with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0019] Figure 1 It is a schematic internal structure diagram of the main body module in an embodiment of the present invention.

[0020] Figure 2 It is a schematic structural diagram of the impact module in an embodiment of the present invention.

[0021] Figure 3 It is a schematic structural diagram of the adjustment module in an embodiment of the present invention.

[0022] Figure 4 It is a schematic structural diagram of the retaining ring in an embodiment of the present invention.

[0023] Figure 5 It is a schematic structural diagram of the knob body in an embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram of the internal structure of the ball plunger screw described in an embodiment of the present invention.

[0025] Figure 7 This is a schematic diagram of the overall structure of the animal osteochondral injury impactor described in an embodiment of the present invention.

[0026] Figure 8 This is a schematic diagram of the internal structure of the animal osteochondral injury impactor described in an embodiment of the present invention.

[0027] In the figure: 100, animal osteochondral injury impactor; 110, main body module; 111, impact hole; 112, installation cavity; 113, chute; 114, operation hole; 115, first main body part; 116, second main body part; 117, second pin; 118, limit screw; 119, observation window; 120, operation module; 121, trigger; 122, first pin; 123, reset part; 124, hook; 130, impact module; 131, impact rod; 132, handle; 133, energy storage part; 134, impact slider; 135, hook groove; 140, adjustment module; 141, adjustment knob; 142, adjustment slider; 143, screw; 144, guide groove; 145, scale line; 146, retaining piece; 147, retaining ring; 148, knob body; 149, ball plunger screw; 150, V-shaped groove; 151, groove. Detailed implementation manners

[0028] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention.

[0029] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and do not specifically refer to the order or sequence. Nor are they used to limit the present invention. They are merely used to distinguish components or operations described with the same technical terms, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions and technical features between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0030] An embodiment of the present invention provides an animal osteochondral injury impactor 100, as Figure 7As shown in the figure, the animal bone and cartilage injury impactor 100 includes: a main body module 110, an operation module 120, an impact module 130, and an adjustment module 140. Impact holes 111 and mounting holes are provided at opposite ends of the main body module 110. The impact hole 111 and the mounting hole are communicated through a mounting cavity 112 inside the main body module 110. A sliding groove 113 and an operation hole 114 that are both communicated with the mounting cavity 112 are respectively provided on the side wall of the main body module 110. The sliding groove 113 and the operation hole 114 are spaced apart on the outer wall of the main body module 110. The operation module 120 includes a trigger 121, a first pin 122, and a reset member 123. The trigger 121 is rotatably connected to the hole wall of the operation hole 114 through the first pin 122, and opposite ends of the trigger 121 are respectively provided with a hook 124 and an operation arm. The operation arm is in reset cooperation with the outer wall of the main body module 110 through the reset member 123. The impact module 130 includes an impact rod 131, a handle 132, a power storage member 133, and an impact slider 134. The impact rod 131 and the handle 132 are perpendicular to each other and are both connected to the impact slider 134. The impact rod 131 and the impact slider 134 are both arranged in the mounting cavity 112. The handle 132 extends outwards through the sliding groove 113 and is in sliding cooperation with the sliding groove 113. The impact slider 134 is provided with a hook groove 135, and the hook 124 is in hook cooperation with the hook groove 135. The power storage member 133 is arranged in the mounting cavity 112 and is located at one end of the impact slider 134 away from the impact rod 131. The adjustment module 140 includes an adjustment knob 141, an adjustment slider 142, and a screw 143. The adjustment knob 141 is arranged in the mounting hole. The screw 143 is connected to the adjustment knob 141. The adjustment slider 142 is in sliding cooperation with the screw 143. The screw 143 and the adjustment slider 142 are located in the mounting cavity 112. Opposite ends of the power storage member 133 are respectively in contact with the impact slider 134 and the adjustment slider 142.

[0031] Optionally, the main body module 110 can be a cylindrical structure, a box structure, or other structural types. For example, please refer to Figure 1 , the main body module 110 is a cylindrical structure.

[0032] It should be noted that the operation arm is in reset cooperation with the outer wall of the main body module 110 through the reset member 123 should be understood as that the reset member 123 is arranged between the operation arm and the outer wall of the main body module 110. In the initial state, the reset member 123 makes the operation arm farther away from the outer wall of the main body module 110 through its own deformation. Under the action of an external force, the reset member 123 stores energy, the operation arm approaches the outer wall of the main body module 110, and the hook 124 is lifted.

[0033] The working principle and beneficial effects of the above technical solution are as follows: When this impactor is in use, first pull the handle 132 backward to compress the energy storage member 133, driving the entire impact module 130 to move axially backward along the main body module 110, so that the impact slider 134 is locked with the hook 124 of the trigger 121. By pressing the trigger 121, the impact module 130 can be released. The impact device pops forward under the elastic force of the energy storage member 133, and the head end of the impact rod 131 extends out of the impact hole 111 at the head end of the main body module 110 to impact the animal cartilage with a certain amount of energy. When it is necessary to adjust the impact force, rotate the adjustment knob 141 to drive the screw 143 to rotate, thereby driving the adjustment slider 142 to move along the axis of the main body, and then adjusting the compression amount of the energy storage member 133 to achieve the function of adjusting the impact energy. Through the methods of energy storage and force adjustment, a more realistic impact injury can be generated on the surface of animal osteochondral, simulating the real injury environment in clinic. After the impact energy is generated on the surface of the cartilage, it is transmitted from the cartilage to the subchondral bone, and then injuries to the cartilage and subchondral bone can be generated. The operation is simple, which is beneficial to improving the accuracy and efficiency of osteochondral injury research.

[0034] Further, please refer to Figure 2 and Figure 7 , there are two chute 113 which are symmetrically arranged along the axis of the main body module 110, and there are two handles 132 which are arranged in one-to-one correspondence with the two chute 113.

[0035] Optionally, the energy storage member 133 can be an airbag, a spring, a rubber band or other elastic reset components.

[0036] The working principle and beneficial effects of the above technical solution are as follows: When pulling the handle 132, the two handles 132 slide along their respective corresponding chute 113. Since the two chute 113 are symmetrically arranged, the impact module 130 is evenly stressed during the movement and will not shift. When the handle 132 drives the impact module 130 to move backward to compress the energy storage member 133, the symmetric chute 113 and handle 132 can ensure that the impact slider 134 moves smoothly backward and is accurately locked with the hook 124 of the trigger 121; when releasing the impact module 130, the impact module 130 can also pop forward smoothly along a straight line under the elastic force of the energy storage member 133. The symmetrically designed handle 132 and chute 113 improve the stability and accuracy of the movement of the impact module 130, avoiding problems such as jamming and offset caused by uneven stress, ensuring the consistency and reliability of each impact of the impactor, and improving the service performance and life of the device; at the same time, the design of the two handles 132 is also convenient for the user to operate with both hands, providing a better force application experience.

[0037] Optionally, the main body module 110 can be an opening and closing structure, a plug-in structure or an integral structure.

[0038] Further, the outer surface of the handle 132 is provided with an anti-slip texture portion, and the anti-slip texture portion is designed with ergonomic concavities and convexities.

[0039] The working principle and beneficial effects of the above technical solution are as follows: Through the anti-slip texture and ergonomic design, the comfort and stability of the user's grip can be improved, the fatigue caused by long-term operation can be reduced, and at the same time, the risk of operation errors caused by hand sliding can be lowered.

[0040] In one embodiment, please refer to Figure 1 , the main body module 110 includes a first main body member 115, a second main body member 116 and a second pin 117. The impact hole 111 is provided on the first main body member 115, the installation cavity 112 and the installation hole are provided in the second main body member 116, the first main body member 115 and the second main body member 116 are pin-connected and matched through the second pin 117, and the impact hole 111 is in guiding cooperation with the impact rod 131.

[0041] The working principle and beneficial effects of the above technical solution are as follows: The first main body member 115 and the second main body member 116 are connected by the second pin 117 to form the main body module 110. The impact rod 131 moves in the installation cavity 112. When the impact module 130 is released, the impact rod 131 moves forward under the elastic force of the energy storage member 133. The impact hole 111 provides a guiding path for the impact rod 131, enabling the impact rod 131 to extend out of the main body module 110 along an accurate direction for impact; at the same time, this split structure facilitates the installation and disassembly of each component. The guiding effect of the impact hole 111 on the impact rod 131 ensures the accuracy of the impact direction and improves the accuracy of simulating animal osteochondral damage; the split structure facilitates the assembly, maintenance and replacement of components of the impactor, reduces the maintenance cost of the equipment, and improves the maintainability of the equipment.

[0042] In one embodiment, along the impact direction of the impact rod 131, starting from one end close to the installation cavity 112, the outer diameter of the first main body member 115 gradually decreases.

[0043] In order to further understand and illustrate the impact direction of the impact rod 131, taking Figure 8 as an example, the impact direction of the impact rod 131 is Figure 8 the direction indicated by the arrow on the straight line S2 in

[0044] The working principle and beneficial effects of the above technical solution are as follows: During the forward impact of the impact rod 131, the first main body 115 with a gradually decreasing outer diameter reduces the contact area with the surrounding environment or animal tissue, reduces the resistance when the impact rod 131 extends, enables the impact rod 131 to extend more smoothly from the impact hole 111 and impact the target at a faster speed., reduces the resistance when the impact rod 131 extends, and positions the location to be impacted more accurately, improves the impact speed and energy transfer efficiency of the impact rod 131, enhances the effect of simulating animal osteochondral damage, and at the same time reduces the wear caused by friction and extends the service life of the impactor.

[0045] In one embodiment, the average minimum gap between the outer wall of the impact rod 131 and the inner wall of the impact hole 111 is 0.2 - 0.5 mm. Among them, the average minimum gap refers to the average value of any number of vertical distances between the inner wall of the impact hole 111 and the outer wall of the impact rod 131 at any sampling length.

[0046] The working principle and beneficial effects of the above technical solution are as follows: In this gap situation, an air suspension cavity will be formed between the impact rod 131 and the impact hole 111, with contactless suspension guidance, greatly reducing the friction during the impact process, making the movement of the impact rod 131 more stable and smooth. Compared with the traditional chute 113 guidance, this suspension guidance method can significantly improve the impact accuracy and repeatability, reduce the component wear caused by mechanical friction, extend the service life of the equipment, and provide a reliable guarantee for high-precision osteochondral damage experiments.

[0047] In one embodiment, please refer to Figure 2 and Figure 7 , an impact tip is provided at one end of the impact rod 131 away from the impact slider 134.

[0048] The working principle and beneficial effects of the above technical solution are as follows: After the impact module 130 is released, the impact rod 131 impacts forward under the elastic force of the energy storage member 133. With its sharp shape, the impact tip can concentrate the force on a smaller area of the animal osteochondral tissue, forming a larger pressure. The impact tip can more effectively simulate animal osteochondral damage, improve the accuracy and effectiveness of the damage; the sharp shape also facilitates the impact rod 131 to penetrate or damage the animal osteochondral tissue, reducing the energy dispersion during the impact process and making the impact effect more significant.

[0049] In one embodiment, please refer to Figure 3 and Figure 8 , the adjustment slider 142 is provided with a guide groove 144, and a limit screw 118 is provided on the inner wall of the installation cavity 112. The limit screw 118 is in guiding cooperation with the guide groove 144.

[0050] The working principle and beneficial effects of the above technical solution are as follows: When the rotary adjustment knob 141 drives the screw 143 to rotate, the adjustment slider 142 moves along the axial direction of the main body under the action of the screw 143. The limit screw 118 is embedded in the guide groove 144 of the adjustment slider 142 to provide guidance for the movement of the adjustment slider 142, ensuring that the adjustment slider 142 can only move along the axial direction of the screw 143 and preventing the adjustment slider 142 from shifting or rotating during movement. The cooperation of the guide groove 144 and the limit screw 118 ensures the stability and accuracy of the movement of the adjustment slider 142, making the adjustment of the position of the adjustment slider 142 by the adjustment knob 141 more precise, thereby enabling more accurate control of the compression amount of the energy storage member 133 and achieving precise adjustment of the impact energy magnitude, improving the reliability and accuracy of the impactor adjustment.

[0051] In one embodiment, please refer to Figure 1 、 Figure 3 and Figure 7 , a scale line 145 is provided on the side of the adjustment slider 142 facing away from the guide groove 144. The scale lines 145 are arranged at intervals along the length direction of the adjustment slider 142. An observation window 119 is provided on the outer wall of the main body module 110. The observation window 119 communicates with the installation cavity 112, and the observation window 119 is used to observe the scale line 145.

[0052] Among them, in order to further understand and illustrate the length direction of the adjustment slider 142, taking Figure 3 as an example, the length direction of the adjustment slider 142 is Figure 3 the direction indicated by any arrow on the straight line S1 in

[0053] The working principle and beneficial effects of the above technical solution are as follows: When the adjustment knob 141 drives the adjustment slider 142 to move, the user can observe the scale line 145 on the adjustment slider 142 through the observation window 119 on the outer wall of the main body module 110, and intuitively understand the moving distance of the adjustment slider 142 according to the position of the scale line 145, so as to determine the compression amount of the energy storage member 133. The scale line 145 provides an intuitive adjustment reference for the user, enabling the user to more accurately control the position of the adjustment slider 142 and achieve quantitative adjustment of the impact energy magnitude; it avoids the problem of inaccurate impact energy caused by blind adjustment, improving the convenience and accuracy of the impactor adjustment.

[0054] In one embodiment, the animal bone and cartilage injury impactor 100 further includes a cyclic reset module (not shown in the figure). The cyclic reset module is disposed in the installation cavity 112, and the cyclic reset module includes a hanging rope and a driving member. One end of the hanging rope is connected to the impact slider 134, and the other end is connected to the output end of the driving member. The driving member is used to wind up the hanging rope to move the impact slider 134 away from the impact hole 111. For example, the driving member is a motor.

[0055] The working principle and beneficial effects of the above technical solution are as follows: The motor is used to achieve the automatic reset of the trigger 121 and the impact module 130. After each impact is completed, the impactor can automatically return to the initial state without manual operation, improving the experimental efficiency and making the operation more convenient.

[0056] In one embodiment, the adjusting knob 141 includes a retaining piece 146, a retaining ring 147 and a knob body 148. The retaining piece 146 and the retaining ring 147 are sleeved on the screw rod 143. One end of the screw rod 143 away from the impact rod 131 is fixedly connected to the knob body 148. The retaining ring 147 is provided with an external thread, and the retaining ring 147 is connected to the main body module 110 through the external thread. The retaining piece 146 is fixed on the screw rod 143 and is located on one side of the retaining ring 147 away from the knob body 148. Specifically, the retaining piece 146, the knob body 148 and the screw rod 143 are welded.

[0057] The working principle and beneficial effects of the above technical solution are as follows: The retaining ring 147 is connected to the mounting hole of the main body module 110 through the external thread, playing a role in fixing the adjusting knob 141 on the main body module 110; the knob body 148 is fixedly connected to the screw rod 143. When the knob body 148 is rotated, the screw rod 143 is driven to rotate; the retaining piece 146 restricts the moving range of the retaining ring 147 on the screw rod 143, ensuring the stability of the adjusting knob 141 during rotation and preventing the retaining ring 147 from detaching from the knob body 148. This structural design ensures the firm connection between the adjusting knob 141 and the main body module 110, so that the adjusting knob 141 will not easily loosen or fall off during adjustment, improving the reliability of the operation of the adjusting knob 141; at the same time, the cooperation of each component makes the installation and disassembly of the adjusting knob 141 more convenient, facilitating the maintenance and repair of the equipment.

[0058] In one embodiment, please refer to Figure 4 、 Figure 5 and Figure 6 . On one side of the knob body 148 close to the retaining ring 147, there is a ball detent 149. On one side of the retaining ring 147 facing the knob body 148, there are a plurality of V-shaped grooves 150 extending radially. The ball detent 149 is in abutting cooperation with the V-shaped grooves 150.

[0059] The working principle and beneficial effects of the above technical solution are as follows: when rotating the adjustment knob 141, the ball screw 149 rolls in the V-groove 150. When the knob is rotated to a certain angle, the ball screw 149 falls into the V-groove 150, producing a locking effect, so that the knob body 148 can stay stably in the current position and provide a damping feeling during rotation, avoiding the knob body 148 from rotating automatically due to slight touch or vibration of external force. The interference between the ball screw 149 and the V-groove 150 provides a positioning and locking function for the adjustment knob 141, ensuring that the adjusted impact energy will not be changed due to unexpected factors, improving the stability and accuracy of the impactor adjustment, and ensuring that each impact can maintain the set energy size.

[0060] Specifically, the angle of the V-shaped groove 150 is 2° to 5°, and the diameter of the ball screw 149 is 2 to 5 mm.

[0061] The working principle and beneficial effects of the above technical solution are as follows: the angle range of the V-groove 150 is 2° to 5°, so that the ball screw 149 can form a good locking effect when it falls into the groove. If the angle is too small, the ball screw 149 is difficult to embed and cannot play a positioning role; if the angle is too large, the locking is not accurate enough, which easily causes the knob to move when subjected to a slight external force. In this angle range, the ball screw 149 and the V-groove 150 are closely matched, which can provide accurate positioning for the adjustment knob 141, ensure that the adjustment knob 141 is stably locked after being adjusted to the appropriate position, effectively avoid the knob from rotating by itself due to vibration or external force, ensure the stability of the impact energy after the impactor is adjusted, and improve the accuracy and consistency of the experimental results. The diameter of the ball screw 149 is 2 to 5 mm. This size range can not only ensure that the ball screw 149 has sufficient strength to cooperate with the V-groove 150, but also make the ball screw 149 produce a moderate damping feeling when rolling in the V-groove 150. When the user rotates the adjustment knob 141, this moderate damping feeling gives the operation process a distinct sense of segmentation, and the user can clearly perceive the rotation angle and position changes of the adjustment knob 141 to avoid over-adjustment; at the same time, the reasonable diameter size also ensures the smooth rolling of the ball screw 149, and will not cause jamming or loosening due to excessively large or small diameters, bringing users a comfortable and precise operating experience. The 2° to 5° angle of the V-groove 150 and the 2 to 5mm diameter of the ball screw 149 ensure that the force distribution of the two is uniform during long-term use, reducing component wear caused by stress concentration. When the ball screw 149 rolls and gets stuck in the V-groove 150, the pressure on each component is within a reasonable range, reducing the risk of component damage, extending the service life of the related structures of the adjustment knob 141, improving the overall durability and reliability of the impactor, reducing the frequency of equipment maintenance and component replacement, and reducing the cost of use.

[0062] In one embodiment, see Figure 6With Figure 7 On the outer wall of the knob body 148, a plurality of grooves 151 are circumferentially and spaced apart from each other.

[0063] The working principle and beneficial effects of the above technical solution are as follows: During operation, when the user rotates the adjustment knob 141 to adjust the impact force, the fingers can be inserted into the grooves 151. Through the contact between the grooves 151 and the fingers, the frictional force between the fingers and the knob body 148 is increased. This increase in frictional force enables the user to apply force more stably when operating the knob, avoiding slipping and ensuring the smoothness of the process of adjusting the knob 141. At the same time, the grooves 151 are circumferentially and spaced apart, forming unique gripping points, providing a more comfortable gripping feeling for the user and reducing the fatigue caused by long-term operation of the knob. In addition, this structural design also makes the operation of the adjustment knob 141 more accurate. The user can more precisely control the rotation angle of the knob, and then more accurately adjust the position of the adjustment slider 142, realizing fine adjustment of the compression amount of the energy storage member 133, and ultimately achieving the purpose of precisely controlling the impact energy. It improves the convenience, stability, and accuracy of the knob operation, improves the user's operation experience, helps to more precisely adjust the impact energy, and enhances the performance of the impactor.

[0064] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. An animal osteochondral injury impactor (100), characterized in that, The animal bone and cartilage injury impactor (100) includes: A main body module (110), with impact holes (111) and mounting holes formed at opposite ends of the main body module (110). The impact holes (111) communicate with the mounting holes through a mounting cavity (112) inside the main body module (110). Slide grooves (113) and operation holes (114) that both communicate with the mounting cavity (112) are respectively formed on the side wall of the main body module (110); An operation module (120), which includes a trigger (121), a first pin (122), and a reset member (123). The trigger (121) is rotatably connected to the hole wall of the operation hole (114) through the first pin (122). Opposite ends of the trigger (121) are respectively provided with a catch (124) and an operation arm. The operation arm is in reset cooperation with the outer wall of the main body module (110) through the reset member (123); An impact module (130), which includes an impact rod (131), a handle (132), a power storage member (133), and an impact slider (134). The impact rod (131) and the handle (132) are perpendicularly arranged and both connected to the impact slider (134). The impact rod (131) and the impact slider (134) are both arranged inside the mounting cavity (112). The handle (132) extends outwards through the slide groove (113) and is in sliding cooperation with the slide groove (113). The impact slider (134) is provided with a hook groove (135). The catch (124) is in hook connection with the hook groove (135). The power storage member (133) is arranged inside the mounting cavity (112) and is located at one end of the impact slider (134) away from the impact rod (131); and An adjustment module (140), which includes an adjustment knob (141), an adjustment slider (142), and a screw rod (143). The adjustment knob (141) is arranged in the mounting hole. The screw rod (143) is connected to the adjustment knob (141). The adjustment slider (142) is in sliding cooperation with the screw rod (143). The screw rod (143) and the adjustment slider (142) are located inside the mounting cavity (112). Opposite ends of the power storage member (133) are respectively in contact with the impact slider (134) and the adjustment slider (142).

2. The animal osteochondral injury impactor (100) according to claim 1, characterized in that, There are two slide grooves (113), which are symmetrically arranged along the axis of the main body module (110). There are two handles (132), which are respectively arranged corresponding to the two slide grooves (113).

3. The animal osteochondral injury impactor (100) according to claim 1, characterized in that, The main body module (110) includes a first main body part (115), a second main body part (116) and a second pin (117). The impact hole (111) is provided on the first main body part (115). The installation cavity (112) and the installation hole are provided in the second main body part (116). The first main body part (115) and the second main body part (116) are pin-connected and matched through the second pin (117). The impact hole (111) is in guiding cooperation with the impact rod (131).

4. The animal osteochondral injury impactor (100) according to claim 3, wherein, Along the impact direction of the impact rod (131), starting from one end close to the installation cavity (112), the outer diameter of the first main body part (115) gradually decreases.

5. The animal osteochondral injury impactor (100) according to claim 1, characterized in that, One end of the impact rod (131) far from the impact slider (134) is provided with an impact tip.

6. The animal osteochondral injury impactor (100) according to claim 1, characterized in that, The adjustment slider (142) is provided with a guide groove (144). The inner wall of the installation cavity (112) is provided with a limit screw (118). The limit screw (118) is in guiding cooperation with the guide groove (144).

7. The animal osteochondral injury impactor (100) according to claim 6, characterized in that, On one side of the adjustment slider (142) facing away from the guide groove (144), scale lines (145) are provided. The scale lines (145) are arranged at intervals along the length direction of the adjustment slider (142). An observation window (119) is opened on the outer wall of the main body module (110). The observation window (119) communicates with the installation cavity (112). The observation window (119) is used to observe the scale lines (145).

8. The animal osteochondral injury impactor (100) according to any one of claims 1-7, characterized in that, The adjustment knob (141) includes a retaining piece (146), a retaining ring (147) and a knob body (148). The retaining piece (146) and the retaining ring (147) are sleeved on the screw rod (143). One end of the screw rod (143) far from the impact rod (131) is fixedly connected to the knob body (148). The retaining ring (147) is provided with an external thread. The retaining ring (147) is connected to the main body module (110) through the external thread. The retaining piece (146) is fixed on the screw rod (143) and is located on one side surface of the retaining ring (147) far from the knob body (148).

9. The animal osteochondral injury impactor (100) according to claim 8, characterized in that, On one side surface of the knob body (148) close to the retaining ring (147), a ball detent (149) is provided. On one side surface of the retaining ring (147) facing the knob body (148), a plurality of V-shaped grooves (150) extending radially are opened. The ball detent (149) is in abutting cooperation with the V-shaped grooves (150).

10. The animal osteochondral injury impactor (100) according to claim 9, characterized in that, A plurality of grooves (151) are opened on the outer wall of the knob body (148) at intervals in the circumferential direction.

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