Intelligent joint of plane type external fixing frame for orthopedics department

Abstract

The invention relates to the technical field of medical instruments, and discloses an intelligent joint of a planar external fixation frame for the orthopedics department, which comprises an extension side joint body and a flexion side joint body, and further comprises an extension side adjustable joint mechanism and a flexion side angle limiting mechanism, the extension side adjustable joint mechanism comprises a multi-axis linkage assembly arranged in the middle of an extension side joint body and a movable installation assembly arranged on the outer side of the extension side adjustable joint mechanism. The flexion-side angle limiting mechanism comprises a transmission adjusting assembly and an angle limiting assembly which are arranged in the middle of the flexion-side joint body, and a fixed mounting assembly arranged on the outer side of the flexion-side joint body; according to the intelligent joint of the plane type external fixing frame for the orthopedics department, the extension side adjustable joint mechanism and the flexion side angle limiting mechanism are adopted, the intelligent joint can adapt to anatomical differences of extension side joints of different patients, multi-degree-of-freedom movable adjustment of the extension side joints is effectively achieved, and the movable angle of the flexion side joints can be accurately controlled and adjusted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an intelligent joint of a planar external fixation frame for orthopedics. BACKGROUND

[0002] External fixation frames are one of the commonly used tools for treating diseases in orthopedics. Existing external fixation frames can be divided into two categories: single-arm type and multi-arm combined type, which are particularly suitable for the fixation of long bone fractures of limbs, but when the fracture involves the articular surface and the metaphysis, cross- joint fixation is often required, which seriously affects the joint function. The author has designed a planar external fixation frame to effectively overcome the drawbacks of traditional external fixation frames, with a patent number of ZL202320581676.9, but it has the disadvantage of not having a cross-joint connection.

[0003] Therefore, there is an urgent need to design an intelligent joint of a planar external fixation frame for orthopedics that can solve the above technical problems. SUMMARY

[0004] In view of the problems mentioned in the background art, the purpose of the present application is to provide an intelligent joint of a planar external fixation frame for orthopedics to solve the problems mentioned in the background art.

[0005] In order to achieve the above-mentioned purpose, the present application mainly provides the following technical solutions:

[0006] An intelligent joint of a planar external fixation frame for orthopedics, comprising a stretch-side joint body and a flex-side joint body, further comprising:

[0007] a stretch-side adjustable joint mechanism and a flex-side angle limiting mechanism; wherein:

[0008] The stretch-side adjustable joint mechanism comprises a multi-axis linkage assembly provided in the middle part of the stretch-side joint body and a movable mounting assembly provided outside thereof;

[0009] The flex-side angle limiting mechanism comprises a transmission adjusting assembly and an angle limiting assembly provided in the middle part of the flex-side joint body, and a fixed mounting assembly provided outside thereof.

[0010] Further, the multi-axis linkage assembly comprises ball joint bodies provided at both ends of the connecting rod a, the ball joint bodies are movably sleeved with ball socket joint seats outside, and the ball socket joint seats are provided with connecting rods b outside;

[0011] A joint pad is provided between the ball joint body and the ball socket joint seat.

[0012] Further, the movable mounting assembly comprises a rotating groove provided transversely from front to back at the outer end of the connecting rod b and a connecting rod c, the connecting rod c is provided with transmission rods at the front and rear ends, the transmission rods are provided with a connecting plate below, and the connecting plate is fixedly mounted on the outer wall of the fixation frame through screws at both ends.

[0013] Further, the transmission adjusting assembly comprises a transmission bin arranged in the middle part of the flexion joint body, and a brake bin is arranged in communication with the left side of the transmission bin.

[0014] The inner bottom wall of the brake bin is provided with a brake motor, the upper end of the brake motor is provided with a control module and a control button, the control button penetrates out of the outer wall of the brake bin at the upper end, the right side of the brake motor is provided with a brake shaft, and the middle part of the brake shaft is provided with a brake gear.

[0015] The central part of the transmission bin is provided with a transmission shaft, the transmission shaft penetrates out of the transmission bin at both ends and is provided with a connecting block, and the middle part of the transmission shaft is provided with a transmission gear.

[0016] The brake gear and the transmission gear are meshed and connected.

[0017] Further, the angle limiting assembly comprises a limiting bin arranged in communication with the right side of the transmission bin, and a gas pump is arranged on the inner side wall of the limiting bin; the left side of the gas pump is fixedly connected with a limiting tooth through an extension rod.

[0018] The transmission gear and the limiting tooth are meshed and connected.

[0019] Further, the fixed mounting assembly comprises a fixed connecting rod arranged at the outer end of the brake bin and the connecting block, and a connecting plate is arranged at the other end of the fixed connecting rod on both sides; the connecting plate is fixedly mounted on the outer wall of the fixed frame on the flexion side through screws at both ends of the connecting plate.

[0020] Further, the inner wall of the fixed frame is provided with a sponge pad.

[0021] The upper and lower fixed frames are movably connected through a clasp ring and a bandage.

[0022] Further, the ball head joint body and the ball socket joint seat are made of a material with wear resistance and corrosion resistance.

[0023] The brake gear, the transmission gear and the limiting tooth are made of a material with high transmission accuracy, wear resistance and impact resistance.

[0024] Compared with the prior art, the beneficial effects of the present application mainly include:

[0025] The intelligent joint of the plane type external fixation frame for orthopedics adopts a flexion side adjustable joint mechanism, effectively realizes the activity adjustment of the flexion side joint with multiple degrees of freedom through the cooperation of the ball head joint body, the ball socket joint seat and the joint pad of the multi-axis linkage assembly, and the flexible structure of the movable mounting assembly, balances the smoothness and stability of the joint activity by using the joint pad of the variable damping material, adapts to the anatomical differences of the flexion side joints of different patients, helps the gradual recovery of the flexion side joint function after surgery, and improves the rehabilitation effect of the patients.

[0026] The present invention discloses an intelligent joint for an orthopedic planar external fixator that employs a flexion angle limiting mechanism. By utilizing the gear transmission system of the transmission adjustment component and the air pump and limiting teeth of the angle limiting component, the flexion joint's range of motion can be precisely controlled and adjusted. This meets the dynamic requirements of the flexion joint's fixation strength and range of motion at different stages of fracture healing, prevents excessive flexion joint movement that could lead to fracture displacement, ensures stable fixation of the flexion fracture site, and promotes good fracture healing and joint function recovery.

[0027] The above description is merely an overview of the technical solution of the present invention. In order to clearly understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a perspective view of an intelligent joint of a planar external fixator for orthopedics according to the present invention;

[0030] Figure 2 This is a perspective view of the extension-side adjustable joint mechanism of the present invention;

[0031] Figure 3 This is a structural diagram of the adjustable joint mechanism of the present invention;

[0032] Figure 4 This is a structural diagram of the flexure angle limiting mechanism of the present invention;

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Extensor joint body; 2. Adjustable extensor joint mechanism; 3. Flexion angle limiting mechanism; 4. Flexion joint body;

[0035] 11. Sponge pad; 12. Clip; 13. Strap;

[0036] 21. Multi-axis linkage assembly; 22. Movable mounting assembly;

[0037] 31. Transmission adjustment assembly; 32. Angle limiting assembly; 33. Fixed mounting assembly;

[0038] 211. Connecting rod a; 212. Ball joint body; 213. Ball joint seat; 214. Connecting rod b; 215. Joint pad;

[0039] 221. Rotating groove; 222. Connecting rod c; 223. Transmission rod; 224. Connecting plate; 225. Screw; 226. Fixing bracket;

[0040] 311. Brake chamber; 312. Transmission chamber; 313. Brake motor; 314. Control module; 315. Control button; 316. Brake shaft; 317. Brake gear; 318. Transmission shaft; 319. Connecting block; 3110. Transmission gear;

[0041] 321. Movement-limiting chamber; 322. Air pump; 323. Telescopic rod; 324. Movement-limiting locking teeth;

[0042] 331. Fixed connecting rod; 224. Connecting plate; 225. Screw; Detailed Implementation

[0043] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0044] like Figures 1-4 As shown, the present invention discloses an intelligent joint for a planar external fixator in orthopedics, comprising an extensor joint body 1 and a flexor joint body 4. These two joint bodies are adapted to the anatomical shapes of the extensor and flexor parts of the human limb, respectively, serving as the basic support structure of the intelligent joint. They provide a stable carrier for subsequent joint movement adjustment and fracture fixation, while conforming to the limb contour to reduce wearing discomfort. The invention also includes:

[0045] The extension-adjustable joint mechanism 2 and the flexion-angle limiting mechanism 3; wherein:

[0046] The adjustable joint mechanism 2 includes a multi-axis linkage component 21 located in the middle of the extension joint body 1 and a movable mounting component 22 located on its outer side. The multi-axis linkage component 21 enables flexible movement of the extension joint in multiple dimensions and angles, adapting to the natural movement trajectory of the human joint. The movable mounting component 22 facilitates assembly and disassembly with the fixation frame 226, while avoiding interference with the movement of the inner side of the joint. The mounting position can be finely adjusted according to the size of the limb to ensure the adaptability and stability of the connection.

[0047] The flexion angle limiting mechanism 3 includes a transmission adjustment component 31 and an angle limiting component 32 located in the middle of the flexion joint body 4, and a fixing and mounting component 33 located on its outer side. The transmission adjustment component 31 receives power and converts the power into the flexion joint's movement force to realize the active adjustment of the flexion joint. The angle limiting component 32 works in conjunction with the transmission adjustment component 31 to limit the flexion joint when it moves to a preset angle, preventing excessive movement that could lead to fracture displacement or joint damage. The fixing and mounting component 33 ensures that the flexion angle limiting mechanism 3 and the fixation frame 226 form an integral structure, preventing loosening during use and ensuring the force balance of the entire mechanism.

[0048] like Figure 1 , 2 As shown, in this embodiment, the multi-axis linkage assembly 21 includes ball joint bodies 212 at both ends of the connecting rod a211. The connecting rod a211 has a rod-shaped structure, and the ball joint bodies 212 at both ends enable the assembly to rotate flexibly at both ends. The ball joint bodies 212 adopt a spherical structure design, which can realize multi-angle rotation and is the core rotating component providing multi-axis movement for the extensor joint. The outer periphery of the ball joint body 212 is movably fitted with a ball-and-socket joint seat 213, and the ball joint body 212 can rotate freely inside the ball-and-socket joint seat 213. At the same time, the ball-and-socket joint seat 213... The spherical groove can limit the ball joint body 212 and prevent it from leaving the preset range of motion. The two work together to form a complete joint rotation structure, ensuring the stability and smoothness of the movement. The ball joint seat 213 is provided with a connecting rod b214 on the outside. The connecting rod b214 is fixedly connected to the ball joint seat 213. Its length and diameter are designed according to the size of the extension joint body 1. It is used to connect the multi-axis linkage assembly 21 and the movable mounting assembly 22, transmit the movement force of the ball joint body 212 and the ball joint seat 213, and at the same time ensure the force balance of the entire multi-axis linkage assembly 21.

[0049] A joint pad 215 is provided between the ball joint body 212 and the ball joint seat 213. The joint pad 215 is made of a variable damping material and fits tightly against the contact surface of the ball joint body 212 and the ball joint seat 213. The variable damping material has the characteristic of adjusting the damping coefficient with the change of external force. It can buffer the impact of external force during joint movement, avoid wear between the ball and the ball due to hard collision, and maintain the stability of joint movement to prevent the movement from being too fast or too slow.

[0050] like Figure 2 , 3As shown, in this embodiment, the movable mounting assembly 22 includes a rotating groove 221 extending transversely from front to back through the outer end of the connecting rod b214, and a connecting rod c222. The rotating groove 221 is a long, narrow groove that provides rotation space for the connecting rod c222, allowing it to rotate around the axis of the rotating groove 221 at a certain angle to accommodate different movement postures of the extension joint. Transmission rods 223 are provided on the lower sides of both the front and rear ends of the connecting rod c222. The symmetrical arrangement of the transmission rods 223 at the front and rear ends ensures uniform force distribution and prevents the connecting rod c222 from tilting or breaking due to unilateral force. The transmission rod 223 is a rod-shaped structure perpendicular to the connecting rod c222, with one end connected to the connecting rod c222. 22 is fixedly connected, and the other end is connected to the connecting plate 224. The connecting plate 224 is provided below the transmission rod 223. The connecting plate 224 serves as a transition component for connecting the movable mounting assembly 22 and the fixed frame 226, improving the stability of the connection. The connecting plate 224 is fixedly installed on the outer wall of the extended side of the fixed frame 226 by screws 225 at both ends. The fixing of the screws 225 at both ends can ensure the connection strength between the connecting plate 224 and the fixed frame 226, and prevent loosening due to vibration or movement during use. The outer wall of the extended side of the fixed frame 226 is the installation position adapted to the extended side adjustable joint mechanism 2. This fixing method can make the movable mounting assembly 22 and the fixed frame 226 form a whole, ensuring the fixing effect of the extended side adjustable joint mechanism 2.

[0051] like Figure 1 , 4 As shown, in this embodiment, the transmission adjustment assembly 31 includes a transmission chamber 312 located in the middle of the flexion joint body 4. The transmission chamber 312 is a closed cavity structure that can protect components such as the transmission shaft 318 and transmission gear 3110 from external dust and sweat contamination, while also preventing components from being damaged by collisions during movement, thus providing a stable operating environment for the transmission components. A brake chamber 311 is connected to the left side of the transmission chamber 312, which allows the components in the brake chamber 311 to cooperate closely with the components in the transmission chamber 312, reducing losses during power transmission. The brake chamber 311 is also a closed cavity that accommodates and protects braking-related components, ensuring the stable realization of the braking function.

[0052] The brake motor 313 is located on the bottom wall of the brake chamber 311. The brake motor 313 is a miniature servo motor with adjustable speed and direction, serving as the power source for the entire transmission adjustment assembly 31. It outputs corresponding power according to control commands, providing driving force for the movement of the flexion joint. A control module 314 and a control button 315 are located on the upper left side of the brake motor 313. The control module 314 is an integrated circuit module with a built-in control program. It receives commands from the control button 315 and converts them into electrical signals to control the start, stop, speed, and direction of the brake motor 313. The control button 315 is a mechanical or touch-sensitive button, serving as a manual operation interface. Medical personnel or patients can trigger control commands by pressing the button. The upper end of 315 extends through the outer wall of the brake chamber 311, allowing the control button 315 to be exposed outside the brake chamber 311. This allows operation without opening the brake chamber 311, improving ease of use. A brake shaft 316 is located on the right side, with one end fixedly connected to the output end of the brake motor 313 and the other end extending to the brake gear 317. Its main function is to transmit the power of the brake motor 313 to the brake gear 317, achieving intermediate power transmission. The brake gear 317 is located in the middle of the brake shaft 316, ensuring the force balance of the brake gear 317 and preventing tooth wear due to uneven force. It can precisely mesh with the transmission gear 3110, and its main function is to transmit the rotational power of the brake shaft 316 to the transmission gear 3110.

[0053] The transmission chamber 312 has a transmission shaft 318 at its center, which converts the rotation of the transmission gear 3110 into its own rotation and transmits the power to the connecting blocks 319 at both ends. The two ends of the transmission shaft 318 extend through the transmission chamber 312 and are provided with connecting blocks 319, which transmit the power of the transmission shaft 318 to the external structure and drive the flexion joint to move. The transmission gear 3110 is provided in the middle of the transmission shaft 318, which receives power through meshing with the brake gear 317 and drives the transmission shaft 318 to rotate.

[0054] The brake gear 317 and the transmission gear 3110 are meshed together to ensure that the power of the brake motor 313 is stably transmitted to the transmission shaft 318, thereby precisely controlling the movement speed and angle of the flexor joint.

[0055] like Figure 4As shown, in this embodiment, the angle limiting component 32 includes a limiting chamber 321 connected to the right side of the transmission chamber 312. This allows the limiting teeth 324 within the limiting chamber 321 to engage closely with the transmission gear 3110 within the transmission chamber 312, facilitating rapid angle limiting. The limiting chamber 321 is a cavity structure that protects the limiting component and provides it with a stable operating space. An air pump 322 is located on the inner wall of the limiting chamber 321. The air pump 322 is a miniature pneumatic pump that can output stable air pressure, which is used for angle limiting. The power source of the fixed component 32 can control the extension and retraction of the telescopic rod 323 according to the control command. The left side of the air pump 322 is fixedly connected to the limiting tooth 324 through the telescopic rod 323, which enables the telescopic rod 323 to push the limiting tooth 324 to move in the direction of the transmission gear 3110. One end of the telescopic rod 323 is fixedly connected to the output end of the air pump 322, and the other end is fixedly connected to the limiting tooth 324, converting the air pressure of the air pump 322 into linear motion, pushing the limiting tooth 324 to mesh or disengage with the transmission gear 3110.

[0056] The transmission gear 3110 and the limiting tooth 324 are meshed together. When meshed, the teeth of the transmission gear 3110 are locked, restricting the rotation of the transmission gear 3110 and thus preventing the transmission shaft 318 from rotating, thereby limiting the angle of the flexor joint. When it is necessary to release the limitation, the air pump 322 controls the telescopic rod 323 to retract, causing the limiting tooth 324 to separate from the transmission gear 3110, and the transmission gear 3110 can rotate again, ensuring the normal movement of the flexor joint.

[0057] like Figure 1 , 4 As shown, in this embodiment, the fixed mounting assembly 33 includes fixed connecting rods 331 at the outer ends of both the brake chamber 311 and the connecting block 319. The brake chamber 311 and the connecting block 319 are key force-bearing parts of the transmission adjustment assembly 31. The fixed connecting rods 331 at the outer ends can transmit the force of these two parts to the connecting plate 224. The other end of the fixed connecting rods 331 on both sides is provided with a connecting plate 224. The connecting plate 224 bears the force of the fixed connecting rods 331 on both sides and distributes the force to the fixed frame 226. The connecting plate 224 is fixedly installed on the outer wall of the bending side of the fixed frame 226 by screws 225 at both ends, so that the fixed mounting assembly 33 and the fixed frame 226 form an integral whole, ensuring the fixing effect and force stability of the bending angle limiting mechanism 3.

[0058] like Figure 1 As shown, in this embodiment, the inner wall of the fixing frame 226 is provided with a sponge pad 11. The inner wall of the fixing frame 226 is the part that directly contacts the human limb. The sponge pad 11 is a flexible porous material that can conform to the contour of the limb skin and reduce the pressure of the fixing frame 226 on the skin.

[0059] The upper and lower fixation frames 226 are movably connected by a retaining ring 12 and a strap 13. The upper and lower fixation frames 226 are of a split structure, which facilitates the insertion and removal of the limb. The retaining ring 12 is a ring-shaped structure, which can initially fix the corresponding positions of the upper and lower fixation frames 226. The strap 13 is a flexible strip structure, which can adjust the tightness according to the thickness of the limb. The movable connection method can adapt to the limb size of different patients, and at the same time facilitates the wearing and removal by medical staff or patients, ensuring that the fixation frame 226 stably wraps the limb and prevents the fixation frame 226 from shifting during use.

[0060] In this embodiment, the ball joint body 212 and the ball joint seat 213 are made of wear-resistant and corrosion-resistant materials. The ball joint body 212 and the ball joint seat 213 need to rotate frequently during use. The wear-resistant material can reduce friction and wear between them, extend the service life of the components, and prevent the movement from getting stuck due to wear. The corrosion-resistant material can resist the corrosion of liquids such as human sweat and medical disinfectant, prevent the components from rusting or deteriorating, ensure the structural stability and biocompatibility of the components, and avoid irritation to human skin.

[0061] The brake gear 317, transmission gear 3110, and limiting tooth 324 are all made of materials with high transmission accuracy, wear resistance, and impact resistance. High transmission accuracy ensures the meshing precision between gears, avoids angular deviations during power transmission, and ensures the accuracy of the flexural joint movement angle. Wear resistance reduces friction and wear between teeth, extending the service life of gears and teeth. Impact resistance allows the components to withstand external impacts that may occur during use, preventing tooth breakage or component deformation, and ensuring the reliable realization of transmission adjustment and angle limiting functions.

[0062] The working principle and usage process of this technical solution are as follows: During use, firstly, based on the size and anatomical shape of the patient's fractured limb, it is necessary to confirm the compatibility of the extensor joint body 1, the flexor joint body 4 and the fixation frame 226, and ensure that the installation position of each component is in line with the patient's actual situation. Medical staff first place the patient's injured limb into the fixation frame 226. When placing it, care should be taken to avoid the fracture site to avoid secondary damage to the fracture site. At the same time, ensure that the limb is fully in contact with the sponge pad 11 on the inner wall of the fixation frame 226 to improve wearing comfort. Then, fix it through the locking ring 12 and the strap 13 between the upper and lower fixation frames 226. Adjust the tightness of the strap 13 so that the limb does not have obvious pressure and the fixation frame 226 is not loose.

[0063] When it is necessary to adjust the movement of the extensor joint, the patient or medical staff can slowly move the extensor limb. At this time, the multi-axis linkage component 21 in the adjustable extensor joint mechanism 2 starts to work. The ball joint body 212 rotates at multiple angles in the ball socket joint seat 213 with the movement of the limb. The joint pad 215 buffers the movement force through the phase damping characteristics to ensure smooth movement. At the same time, the connecting rod c222 in the movable mounting component 22 rotates accordingly in the rotation groove 221. The transmission rod 223 drives the connecting plate 224 to make micro-adjustments in sync with the movement, ensuring that the extensor joint can move flexibly within a safe range and adapt to the natural movement trajectory of the limb.

[0064] When it is necessary to adjust the flexion joint movement, medical staff or patients can issue an adjustment command by pressing the control button 315 on the outer wall of the brake chamber 311. After receiving the command, the control module 314 controls the brake motor 313 to start. The brake motor 313 outputs power to drive the brake shaft 316 to rotate. The brake gear 317 in the middle of the brake shaft 316 rotates accordingly. Through meshing with the transmission gear 3110, it drives the transmission shaft 318 in the transmission chamber 312 to rotate. The connecting blocks 319 at both ends of the transmission shaft 318 rotate with the transmission shaft 318 to drive the flexion joint body 4 to move, realizing the active adjustment of the flexion joint. During the adjustment process, the speed of the brake motor 313 can be adjusted by the control button 315 to control the joint movement speed.

[0065] When it is necessary to limit the range of motion of the flexor joint, the control module 314 sends a command to the air pump 322. The air pump 322 starts and outputs air pressure, pushing the telescopic rod 323 to extend towards the transmission gear 3110. The limiting tooth 324 at the end of the telescopic rod 323 extends with the telescopic rod 323 and meshes with the transmission gear 3110 in the middle of the transmission shaft 318, locking the teeth of the transmission gear 3110 and limiting the rotation of the transmission gear 3110 and the transmission shaft 318, thereby limiting the range of motion of the flexor joint and preventing excessive joint movement that could lead to fracture displacement. The angle limit value can be set in advance according to the rehabilitation needs of the patient during the fracture healing stage.

[0066] During daily use and rehabilitation, the extension and flexion sides of the intelligent joint can be interchanged according to different joint movement needs in clinical practice. The connection of each component should be checked regularly to ensure that the screws 225 are not loose, the gears are meshing normally, and the tightness of the straps 13 is appropriate. At the same time, the range of motion of the flexion joint can be adjusted by controlling the button 315 and the air pump 322 according to the progress of fracture healing, gradually increasing the range of motion and assisting in the rehabilitation of joint function.

[0067] When it is necessary to check the wound or remove the equipment after the patient's fracture has healed, loosen the strap 13, remove the bone screw, and slowly remove the injured limb from the fixation frame 226. Then, disassemble the connecting parts of the extension adjustable joint mechanism 2 and the flexion angle limiting mechanism 3 in sequence. After cleaning and disinfecting each part, store it properly for subsequent maintenance or reuse.

[0068] The present invention has been further described above with reference to the embodiments, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A smart joint of a planar external fixator for orthopedics, comprising an extensor joint body (1) and a flexor joint body (4), characterized in that: Also includes: An extendable joint mechanism (2) and a flexion angle limiting mechanism (3); wherein: The extendable adjustable joint mechanism (2) includes a multi-axis linkage assembly (21) located in the middle of the extendable joint body (1) and a movable mounting assembly (22) located on its outer side; The flexion angle limiting mechanism (3) includes a transmission adjustment assembly (31) and an angle limiting assembly (32) located in the middle of the flexion joint body (4), and a fixing mounting assembly (33) located on its outer side.

2. The intelligent joint of the planar external fixator for orthopedics according to claim 1, characterized in that: The multi-axis linkage assembly (21) includes ball joint bodies (212) at both ends of the connecting rod a (211), ball joint bodies (212) are movably fitted with ball socket joint seats (213) on their outer periphery, and connecting rods b (214) are provided on the outer side of the ball socket joint seats (213). A joint pad (215) is provided between the ball-head joint body (212) and the ball-socket joint seat (213).

3. The intelligent joint of the planar external fixator for orthopedics according to claim 1, characterized in that: The movable mounting assembly (22) includes a rotating groove (221) that runs horizontally from front to back through the outer end of the connecting rod b (214) and a connecting rod c (222). The lower sides of the front and rear ends of the connecting rod c (222) are provided with transmission rods (223). A connecting plate (224) is provided below the transmission rod (223). The connecting plate (224) is fixedly installed on the outer wall of the extended side of the fixing frame (226) by screws (225) at both ends.

4. The intelligent joint of the planar external fixator for orthopedics according to claim 2, characterized in that: The transmission adjustment assembly (31) includes a transmission chamber (312) located in the middle of the flexion joint body (4), and a brake chamber (311) connected to the left side of the transmission chamber (312); The brake chamber (311) is equipped with a brake motor (313) on the bottom wall. The upper left side of the brake motor (313) is equipped with a control module (314) and a control button (315). The upper end of the control button (315) extends through the outer wall of the brake chamber (311). The right side is equipped with a brake shaft (316). The brake shaft (316) is equipped with a brake gear (317) in the middle. The transmission chamber (312) has a transmission shaft (318) at its center. Both ends of the transmission shaft (318) extend through the transmission chamber (312) and are provided with connecting blocks (319). A transmission gear (3110) is provided in the middle of the transmission shaft (318). The brake gear (317) and the transmission gear (3110) are meshed together.

5. The intelligent joint of the planar external fixator for orthopedics according to claim 4, characterized in that: The angle limiting component (32) includes a limiting chamber (321) connected to the right side of the transmission chamber (312), an air pump (322) is provided on the inner wall of the limiting chamber (321), and the left side of the air pump (322) is fixedly connected to the limiting tooth (324) via a telescopic rod (323); The transmission gear (3110) and the limiting tooth (324) are meshed together.

6. The intelligent joint of the planar external fixator for orthopedics according to claim 1, characterized in that: The fixed installation assembly (33) includes a fixed connecting rod (331) at the outer end of both the brake chamber (311) and the connecting block (319), and a connecting plate (224) at the other end of the fixed connecting rod (331) on both sides. The connecting plate (224) is fixedly installed on the outer wall of the fixed frame (226) by screws (225) at both ends.

7. The intelligent joint of the planar external fixator for orthopedics according to claim 3, characterized in that: The inner wall of the fixing frame (226) is provided with a sponge pad (11); The upper and lower fixing frames (226) are movably connected by a retaining ring (12) and a strap (13).

8. The intelligent joint of the planar external fixator for orthopedics according to claim 5, characterized in that: The ball joint body (212) and ball socket joint seat (213) are made of wear-resistant and corrosion-resistant materials; The brake gear (317), transmission gear (3110), and limiting pawl (324) are all made of materials with high transmission accuracy, wear resistance, and impact resistance.

Images