Orthopedic traction device

Abstract

The application discloses an orthopedic traction device, which comprises a mounting frame, a support rod movably arranged on the mounting frame, an electric control driving unit, a non-powered manual adjusting unit and a clutch mechanism; the electric control driving unit comprises a servo motor, which is used for driving the support rod to move in at least one direction; the non-powered manual adjusting unit comprises a manual operating part and a threaded transmission pair connected with the manual operating part, which are used for independently driving the support rod to make non-powered micro-motion in the same direction; the clutch mechanism is arranged on a transmission link between the electric control driving unit and the support rod, and has a first state and a second state; in the first state, the electric control driving unit is in transmission connection with the support rod; and in the second state, the transmission link of the electric control driving unit and the support rod is disconnected, and the non-powered manual adjusting unit is in transmission connection with the support rod. Through the above structure, the switching of electric control adjustment and manual adjustment is realized, and the use safety and reliability of the device under the condition of power failure or fault are improved.

Description

Technical Field

[0001] This invention relates to the field of orthopedic traction technology, specifically orthopedic traction devices. Background Technology

[0002] Orthopedic traction devices are commonly used medical devices in orthopedic clinical treatment, primarily for reducing and fixing fractures or correcting joint dislocations. Their basic principle is to use continuous traction force to counteract muscle spasms or contractions, thereby restoring the normal force line and length of the limb. Existing orthopedic traction devices typically employ a bedside fixed structure, mainly consisting of a fixation frame, a telescopic support rod, and traction components. Traction treatment for patients of different body types and in different limb positions is achieved by adjusting the height of the support rod and the position of the traction components. The rationality of its structural design and the ease of adjustment directly affect the effectiveness of surgical treatment and the work efficiency of medical staff.

[0003] However, an orthopedic traction device disclosed in patent CN108742977B includes a traction device for traction of a target position, a traction frame for mounting the traction device, a support rod located below the traction frame, a mounting assembly for mounting the support rod on an operating table, and a locking adjustment assembly for adjusting the horizontal distance between the support rod and the operating table. The locking adjustment assembly is fixed to the mounting assembly, and the traction frame is rotatably mounted on the support frame via a first rotating assembly. Compared with the prior art, the orthopedic traction device provided by this invention significantly increases the traction stroke of the traction device, allows adjustment of the traction position and traction angle of the traction device according to clinical needs, greatly increases the applicability of the traction device, and is easy to assemble, disassemble, and carry, making it suitable for promotion in clinical medicine. Although it achieves multi-degree-of-freedom adjustment, it still has significant shortcomings in practical applications: First, the device relies on a single manual or electronic adjustment method. The electronic control mode is susceptible to power outages or malfunctions, resulting in a loss of adjustment capability and insufficient safety redundancy during surgery. Moreover, its operation is cumbersome and laborious, making it difficult to achieve stable and controllable clinical operation. Second, the device lacks a real-time monitoring and visual feedback mechanism. During traction, it is impossible to intuitively obtain key data such as traction force, spatial position, and operating status. Medical staff can only rely on experience to judge, leading to inaccurate control of traction force and repositioning position, and potential safety hazards such as over-traction and unstable repositioning. Finally, the device's adjustment structure is too rigid, making it unable to simultaneously meet the needs of rapid positioning and stable correction. Furthermore, it is difficult to disengage from electronic control for continuous use after surgery, which can easily cause problems such as overheating and electromagnetic interference. It cannot meet the clinical needs of modern orthopedic surgery for safety, visualization, and stability. Therefore, an orthopedic traction device is needed to address the existing shortcomings. Summary of the Invention

[0004] Although the comparative data achieved multi-degree-of-freedom adjustment, it still suffers from insufficient safety redundancy, lack of real-time monitoring and visualization, and inability to balance rapid positioning with stable correction and postoperative safe use, making it difficult to meet the clinical needs of modern orthopedic surgery for safety, visualization, and stability.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An orthopedic traction device, comprising: Mounting frame; The support rod is movably mounted on the mounting frame; An electronically controlled drive unit, including a servo motor, is used to drive the support rod to move in at least one direction; A powerless manual adjustment unit includes a manual operating component and a threaded transmission pair connected to the manual operating component, used to independently drive the support rod to make powerless micro-movements in the same direction; The clutch mechanism is located on the transmission link between the electronically controlled drive unit and the support rod, and has a first state and a second state. In the first state, the electronically controlled drive unit is connected to the support rod, and the unpowered manual adjustment unit is disconnected from the support rod; In the second state, the transmission link between the electronically controlled drive unit and the support rod is disconnected, and the powerless manual adjustment unit is connected to the support rod.

[0006] Furthermore, the manual operating component is a fine-tuning rod, and the threaded transmission pair includes a lead screw fixedly connected to the fine-tuning rod and a moving block threadedly engaged with the lead screw. The moving block is directly or indirectly connected to the support rod.

[0007] Furthermore, the clutch mechanism is a mechanical clutch switch, which allows for manual switching between the first and second states.

[0008] Furthermore, it also includes a status detection unit, used to detect the current status of the clutch mechanism and output a status signal; The control unit is electrically connected to the electronically controlled drive unit and the status detection unit, and is configured to prevent the electronically controlled drive unit from starting when the status signal indicates the second status.

[0009] Furthermore, it also includes: multiple sensors, said multiple sensors comprising: A tension sensor is used to detect the traction force applied by the traction head; Displacement detection unit, used to detect the height of the device or the position of the traction head; Position sensors are used to detect the spatial coordinates of support rods or support frames; An electronically controlled drive unit is used to drive the movement of the traction head or support rod. Manual adjustment unit for fine-tuning of the traction head or support rod without power drive; The status recognition unit is used to identify whether the current adjustment mode is electronic control mode or manual mode; The control unit, electrically connected to the plurality of sensors, the electronically controlled drive unit, and the status recognition unit, is configured as follows: In the electronic control mode, the electronic drive unit is controlled in a closed loop based on the real-time feedback data from the multiple sensors to maintain the traction force or position within a preset range. In the manual mode, the closed-loop control of the electronically controlled drive unit is stopped, while the data output and display of the multiple sensors are maintained for the operator's reference. When the state recognition unit detects a change in adjustment mode, it automatically updates the control parameters to adapt to the new mode.

[0010] Furthermore, the orthopedic traction device also includes a mechanical locking mechanism that automatically locks the transmission link of the electronically controlled drive unit in the manual mode, physically separating it from the traction head or support rod.

[0011] Furthermore, in the manual mode and when the mechanical locking mechanism is locked, the traction tension of the traction head or support rod is maintained independently by the manual adjustment unit, without the need for power supply from the electrical control system.

[0012] Another technical solution provided in this application is as follows:

[0013] An orthopedic traction device, comprising: Support frame, used to mount the traction head; The adjusting rod is rotatably mounted on the support frame, and its surface is provided with an operating part and scale markings distributed along the axial direction; A threaded drive pair connects the adjusting rod to a moving part, and the moving part is directly or indirectly connected to the traction head; When the adjusting rod is rotated manually, it drives the traction head to make axial displacement in a set direction through the threaded transmission pair, and the threaded transmission pair provides tactile damping feedback that changes with displacement resistance during rotation. The scale markings are used to quantify the displacement of the traction head, so that the operator can use X-ray images to determine and correct its position.

[0014] Furthermore, each rotation of the adjusting rod corresponds to a displacement of 0.02cm to 0.05cm for the traction head.

[0015] Furthermore, the orthopedic traction device also includes a damping adjustment structure for adjusting the rotational resistance of the threaded transmission pair to change the sensitivity of the tactile damping feedback.

[0016] Furthermore, the operating part is a knurled knob or a handle with anti-slip texture.

[0017] Compared with existing technologies, this orthopedic traction device has the following advantages: I. This invention combines rapid electronic adjustment with manual adjustment without power, enabling the device to independently correct the traction position even in the event of motor failure, power outage, or system malfunction. This provides critical safety redundancy for orthopedic surgery, effectively avoids intraoperative medical risks caused by equipment failure, and significantly improves the overall safety and reliability of traction operations.

[0018] Second, by setting up a manually adjustable structure with tactile damping feedback, the present invention allows doctors to intuitively perceive the traction force and bone alignment through touch. Combined with intraoperative X-ray fluoroscopy, it achieves a dual judgment of "tactile + visual" judgment, which is highly in line with the light-touch and gradual operation habits of orthopedic surgery, reduces the risk of excessive traction on nerves and blood vessels, and improves the adaptability of clinical operation.

[0019] Third, this invention integrates distributed multi-sensors and a real-time display control screen to construct a full-process intelligent monitoring and visualization system, realizing full-domain acquisition and digital display of traction force, device height, traction head spatial coordinates and operating status, making the traction process fully data-driven, visualized and traceable, breaking away from the traditional experience-based operation mode, and improving the accuracy and standardization of traction therapy.

[0020] Fourth, by adopting a mobile support and rigid locking structure that is highly adaptable to hospital beds, the device can be moved quickly, automatically raised and lowered, and reliably fixed to the bed, effectively counteracting the traction reaction force, solving the problems of poor adaptability and easy shaking of traditional devices, and improving the applicability and stability of the device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention from another perspective; Figure 3 This is a schematic diagram of the internal structure of the mounting frame of the present invention; Figure 4 For the present invention Figure 3 Second-view structural diagram; Figure 5 For the present invention Figure 3 Third-person perspective structural diagram; Figure 6 This is an exploded structural diagram of the support rod and its connector of the present invention; Figure 7 This is an exploded structural diagram of the support frame and its connecting parts of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of a partial structure; Figure 9 This is a schematic diagram of the exploded structure of the support frame of the present invention; Figure 10 This is a schematic diagram of the exploded structure of the movable support component of the present invention; Figure 11 This is a schematic diagram of the engagement state of the mechanical clutch switch of the present invention. Figure 12 This is a schematic diagram of the second engagement state of the mechanical clutch switch of the present invention.

[0023] In the diagram: 1. Mounting frame; 2. Guide groove; 3. Moving support component; 301. Support leg; 302. Self-locking caster wheel; 303. Connecting rod; 304. Hydraulic cylinder; 305. Moving sleeve; 306. Limit bolt; 307. Fixing bolt; 4. Support rod; 5. Moving assembly; 501. Synchronous pulley; 502. Synchronous belt; 503. Servo motor; 6. Support frame; 601. Movable sleeve; 602. Movable block; 603. Support plate; 604. Rotary shaft; 7. Adjusting assembly; 701. Guide sleeve; 702. Moving block; 70 3. Adjusting rod; 704. Servo motor one; 705. Servo motor two; 706. Guide rod; 707. Fine-tuning rod one; 8. Traction head; 9. Control components; 901. Mounting sleeve; 902. Servo motor four; 903. Mounting ring; 904. Moving frame; 905. Fine-tuning rod two; 10. Monitoring and adjustment system; 1001. Distance sensor one; 1002. Distance sensor two; 1003. Control display screen; 11. Drive motor; 12. Meshing gear one; 13. Meshing gear two; 14. Clutch gear ring; 15. Manual knob. Detailed Implementation

[0024] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] This application is described below with reference to the accompanying drawings and specific embodiments: like Figure 1-12As shown, the present invention provides a technical solution: an orthopedic traction device. The device is installed at the end of the bed or on the side of the operating table for limb traction treatment of orthopedic patients. Compared with the prior art, the core innovative advantage of this device is that it adopts a combination of electronic control rapid adjustment and non-powered manual adjustment, and integrates a full-process intelligent monitoring and visualization system. This ensures the convenience of operation and improves the safety, stability and clinical adaptability of the traction process. The orthopedic traction device mainly includes a mounting frame 1, a movable support 3, a support rod 4, a movable component 5, a support frame 6, an adjustment component 7, a traction head 8, a control component 9 and a monitoring and adjustment system 10.

[0026] like Figure 1 and Figure 10 As shown, the movable support 3 not only supports the weight of the entire device but also controls the overall lifting and movement of the device. Specifically, the movable support 3 includes a support leg 301, with a self-locking caster wheel 302 fixedly connected to the bottom of the support leg 301, allowing the device to move freely and lock between different locations. A hydraulic cylinder 304 is fixedly housed in the top cavity of the support leg 301. The telescopic rod of the hydraulic cylinder 304 is set upwards and fixedly connected to the bottom end of the connecting rod 303. The rod body of the connecting rod 303 is movably inserted into the support. Inside the cavity of the support leg 301, its top end is fixedly connected to the bottom of the mounting frame 1. By controlling the extension and retraction of the hydraulic cylinder 304, the connecting rod 303 is driven to rise and fall, thereby adjusting the overall height of the mounting frame 1 to adapt to beds of different heights. In addition, the outer side of the support leg 301 is equipped with a locking device, which includes a movable sleeve 305. The movable sleeve 305 is threaded with a limit bolt 306, which locks the height position of the movable sleeve 305. A pair of fixing bolts 307 are threaded through both sides of the movable sleeve 305.

[0027] Here, we would like to specifically explain the application scenarios of the locking mechanism: When this device needs to be installed at the end of a hospital bed of different sizes, due to the differences in bed height and mounting hole positions, the operator can first push the device to the corresponding position at the end of the bed, and then step on the double locking pedal (wheel rotation lock + wheel surface sliding lock) of the self-locking caster wheel 302 to complete the initial positioning of the device; if the operating room floor is uneven, the height fine adjustment knob on the side of the caster wheel can be rotated, and in conjunction with the bubble level on the mounting frame 1 (not shown in the figure), the mounting frame 1 can be adjusted to a horizontal state to avoid the device tilting and affecting the traction accuracy. Then, the hydraulic cylinder 304 is activated by the physical button on the control display screen 1003. Combined with the real-time height value of the mounting frame 1 displayed on the display screen, the mounting frame 1 is adjusted to be flush with the bed surface / suitable for the traction of the affected limb. After the adjustment is completed, the hydraulic cylinder 304 automatically triggers the hydraulic pressure holding lock to prevent height deviation due to hydraulic leakage. Then, the limit bolt 306 is loosened. The movable sleeve 305 is slid up and down. If it is an orthopedic bed with pre-set mounting holes, align the fixing bolt 307 with the mounting holes on the bed and screw the fixing bolt 307 in until it fits against the bed. If it is a regular hospital bed or operating table without pre-set mounting holes, the fixing bolt 307 on the movable sleeve 305 can be removed and replaced with a clamping clamp. The clamp is then attached to the edge of the hospital bed, and the clamp locking bolt is tightened. Then, the limit bolt 306 is tightened to complete the rigid locking. After gently pushing the device frame and confirming that there is no slippage or shaking, the position self-check function of the monitoring and adjustment system 10 is used to verify whether the relative position of the device and the bed is stable, so as to avoid the traction reaction force causing fixation failure. This structural design effectively solves the problem that traditional traction devices cannot be adapted to various bed types due to the single model. In addition, during the traction process, the rigid connection between the movable sleeve 305 and the bed can effectively offset the reaction force generated by traction, prevent the device from shaking, and ensure the safety of treatment.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 10 As shown, a pair of support rods 4 are arranged in parallel on the inner side of the mounting frame 1. The pair of support rods 4 are configured to reciprocate along the length of the mounting frame 1. In order to drive the support rods 4 to move, a moving component 5 is provided at each of the two long sides of the mounting frame 1. The moving component 5 includes a pair of synchronous wheels 501 that are rotatably connected to the inner walls of both ends of the mounting frame 1 by a rotating shaft, and a synchronous belt 502 that is tensioned and sleeved on the synchronous wheels 501 to form a closed-loop transmission structure. The outer wall of one of the guide sleeves 701 is fixedly connected to one side of the synchronous belt 502. A servo motor 503 is fixedly installed on the outer wall of the mounting frame 1. The output shaft of the servo motor 503 is connected to the rotating shaft of one of the synchronous wheels 501.

[0029] It is important to emphasize that the servo motors used in this device are all high-precision servo motors with high-resolution encoders, capable of precisely controlling the rotation angle and stroke, thereby ensuring the positioning accuracy of the actuator. Based on this, the invention incorporates an adjustment mode that combines electronic control with manual adjustment. Regarding the horizontal displacement adjustment of the support rod 4, the moving component 5, through the synchronous belt 502, can quickly drive the support rod 4 to move a large stroke along the length of the mounting frame 1, rapidly moving the traction head 8 to the vicinity of the affected area; the fine-tuning rod 707 in the adjusting component 7 can drive the moving block 702 to move slightly along the length of the mounting frame 1, smoothly correcting the horizontal position of the support rod 4. This adjustment is a passive adjustment without power, and can be used independently in case of motor failure, power outage or system abnormality, providing a safety redundancy backup for surgery.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 9 and Figure 10 As shown, each support rod 4 is movably fitted with a support frame 6. The support frame 6 is the key carrier for connecting the traction end. The support frame 6 includes a movable sleeve 601 and a movable block 602. The movable block 602 is movably disposed inside the support rod 4. Its protruding end passes through the clearance groove of the side wall of the support rod 4 and is fixedly connected to the movable sleeve 601. Support plates 603 are symmetrically fixedly connected to the outer walls on both sides of the movable sleeve 601. A rotating shaft 604 is laterally rotatably connected to the opposite side wall between the two support plates 603.

[0031] To drive the support frame 6, an adjustment assembly 7 is installed on the support rod 4. The adjustment assembly 7 includes a guide sleeve 701 slidably connected in the guide groove 2. Each guide sleeve 701 is rotatably connected to a moving block 702. Both ends of the support rod 4 are rotatably inserted into the moving blocks 702. An adjustment rod 703 is axially rotatably connected in the inner cavity of the support rod 4. The adjustment rod 703 passes through the movable block 602 and is threadedly connected to the movable block 602. A servo motor 704 is fixedly installed inside one end of the support rod 4. Its output shaft is driven by the end of the adjustment rod 703. In this embodiment, the adjustment rod 703 and the movable block 602 form a threaded transmission pair through threaded engagement. When the adjustment rod 703 rotates under the drive of the servo motor 704, it can drive the movable block 602 to produce linear displacement along the axial direction of the support rod 4, thereby driving the support frame 6 to adjust its position along the direction of the support rod 4, and realizing the adjustment of the traction depth.

[0032] The adjustment assembly 7 also includes a servo motor 705 fixed in one of the moving blocks 702, whose output end is connected to the end of the support rod 4 for transmission, driving the support rod 4 to rotate around its own axis, thereby adjusting the orientation of the support frame 6. In addition, a guide rod 706 is fixedly connected in one of the guide sleeves 701, and the guide rod 706 slides through the corresponding moving block 702 to play an auxiliary guiding role.

[0033] Similarly, in the axial displacement adjustment of the support frame 6, the adjusting rod 703 is driven to rotate by the servo motor 704, which drives the movable block 602 and the support frame 6 to move rapidly along the axial direction of the support rod 4 through the threaded pair, thereby achieving a wide range of adjustment of the traction depth; when motor failure, power failure, or fine intraoperative correction occurs, the mechanical clutch switch next to the support rod 4 / support frame 6 can be operated (e.g., Figure 11 , Figure 12The diagram shown is merely one possible clutch engagement method. When the clutch gear ring 14 meshes with the first meshing gear 12, an electric drive mode can be used; when the clutch gear ring 14 meshes with the second meshing gear 13, a manual drive mode can be used (controlled by the manual knob 15). This completely separates the electric drive chain from the manual adjustment mechanism. After the mechanical clutch switch is switched, the adjustment mode indicator light on the control display screen 1003 changes from "electric control" to "manual," indicating that the current adjustment state is without power, thus preventing accidental operation of the electric control button. The fine-tuning lever 90 in the control component 9... 5 is used to smoothly correct the position of the traction head 8. The fine-tuning rod 707 of the rotating adjustment assembly 7, in this embodiment, is also threadedly engaged with the moving block 702 to form a threaded transmission pair. By manually rotating the fine-tuning rod 707, the moving block 702 can be driven to produce a slight linear displacement along the guide sleeve 701, thereby driving the support rod 4 to perform horizontal fine-motion adjustment (for example, a single rotation of the fine-tuning rod 707 displaces the support rod 4 by approximately 0.05 cm). During the adjustment process, the doctor can sense the moving resistance of the support rod 4 through tactile damping feedback. While observing the bone alignment using X-ray fluoroscopy, the fine-tuning lever 905 of the control component 9 is rotated, driving the movable frame 904 to move axially along the movable sleeve 601, causing the traction head 8 to make small-stroke micro-movements. During this process, the motor transmission chain is in a mechanically locked state, free from inertia and vibration interference. The doctor can perceive the degree of fit between the traction force and the bone alignment through light touch operation (slowly rotating the fine-tuning lever 905), conforming to the "gradual" operation habits of orthopedics and avoiding over-traction. If precise control of displacement is required, the scale markings on the fine-tuning lever 905 can be referenced (e.g., each division corresponds to 0.0). (2cm) After adjustment, the damping structure of the fine-tuning rod 905 automatically locks to prevent positional deviation. After manual correction during the operation, if the electronic control system returns to normal, the clutch switch can be switched back to the "electronic control" mode. The control unit automatically collects the position data after manual adjustment and updates the preset parameters to achieve seamless connection between electronic control and manual operation. The adjustment process has tactile damping feedback, and the doctor can perceive the traction force and bone alignment status by touch. Combined with intraoperative X-ray fluoroscopy, it can achieve dual judgment of touch and vision, which conforms to the light touch and gradual operation habits of orthopedics and reduces the risk of excessive traction.

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 9As shown, a traction head 8 is rotatably mounted at the end of the support frame 6. The traction head 8 is the core component connecting the patient's limb to the support frame 6. A quick connector is provided at the front end of the traction head 8 for detachable connection with the traction head. The doctor can select the corresponding traction head according to the patient's traction location (upper limb / lower limb), insert the connecting end of the traction head into the quick connector of the traction head 8, and rotate the locking ring of the quick connector (rotation angle 90°) to complete the mechanical locking of the traction head. The connection position sensor inside the quick connector detects the connection status in real time. If the connection is not in place, the control display screen 1003 issues an audible and visual alarm and prohibits the start of the traction program. The traction head 8 integrates a tension sensor that can detect the traction force in real time. A control component 9 is provided on the support frame 6 for adjusting the traction head 8. The control component 9 includes a mounting sleeve 901 sleeved on the outside of the rotating shaft 604. The tail end of the traction head 8 is fixedly inserted into the mounting sleeve. On the sleeve 901, a servo motor 902 is fixedly mounted on the outer side of one of the support plates 603. Its output shaft is connected to the rotating shaft 604 for transmission. The control component 9 also includes a mounting ring 903 coaxially fixedly connected to the middle position of the mounting sleeve 901. A movable frame 904 is movably sleeved on the outer side of the movable sleeve 601. One end of the movable frame 904 is engaged with the outer side of the mounting ring 903. A fine adjustment rod 905 is rotatably connected between the two support plates 603. The fine adjustment rod 905 passes through the movable frame 904 axially and is threadedly connected to the movable frame 904. The fine adjustment rod 905 and the movable frame 904 form a threaded transmission pair through threaded engagement. When the operator manually rotates the fine adjustment rod 905, it can drive the movable frame 904 to produce a small displacement along the axial direction, thereby driving the mounting ring 903 and the traction head 8 to perform fine position adjustment to meet the needs of fine adjustment of traction position in orthopedic surgery.

[0035] Specifically, after the support frame 6 is positioned using the adjusting rod 703, the operator can rotate the fine-tuning rod 905 to drive the moving frame 904 to move axially, thereby causing the mounting ring 903 and the traction head 8 to make a small stroke displacement. During this manual adjustment stage, the motor drive chain is in a mechanically locked state, which can completely eliminate the disturbance of motor inertia, vibration and electromagnetic interference to the reduced fracture ends, ensuring long-term stability of the reduction position, especially suitable for complex cases such as comminuted fractures and intra-articular fractures. For traction of comminuted fractures, after the device is fixed, the mounting frame 1 needs to be completely horizontal using a bubble level to avoid lateral force on the fracture ends during traction. The initial traction force is set to 30% of the target value and slowly increased to the target value. A gradual constant force traction mode is adopted, and the combination of "electric coarse adjustment + manual fine adjustment" is preferred. During manual fine adjustment, the scale markings of the fine-tuning rod 905 and the tactile feedback are used to achieve precise adjustment of the fracture ends. The reduction is refined, and all electronically controlled components are mechanically locked during traction to prevent vibration from interfering with the reduction position. Simultaneously, during postoperative monitoring, the system can be disengaged from the electronic control system, and traction tension can be maintained manually. This avoids the motor overheating or electromagnetic interference from prolonged operation affecting the wound and monitoring equipment, improving postoperative rehabilitation safety. For lower limb fracture traction (such as femoral and tibial fractures), a constant force traction mode is used. During the operation, the traction head 8 can be slightly moved axially via the micro-adjustment rod 905, and precise reduction of the fracture ends can be achieved with X-ray fluoroscopy. The traction force is closely monitored during traction to avoid excessive force that could damage blood vessels and nerves. For upper limb fracture traction (such as humeral and radial fractures), an intermittent traction mode is used (5 minutes of traction, 1 minute of relaxation). Due to the thinner bones of the upper limb, a "light force, slow adjustment" approach is adopted during traction. The horizontal position of the support rod 4 is precisely controlled via the micro-adjustment rod 707 to prevent displacement of the fracture ends.

[0036] The monitoring and control system 10 provides intelligent monitoring and visualization support for the entire process of this device. It is the core unit for achieving safe and controllable traction process and traceable data. The system is distributed on the mounting frame 1 and support rod 4 to realize real-time acquisition of traction force, device height, spatial coordinates of traction head 8, and component operating status. After the device is started, the control unit automatically performs a full self-test on the tension sensor, distance sensor 1001 / 2, and displacement detection unit. The self-test results are displayed on the control display screen 1003. If a sensor fails, the display screen marks the location of the faulty sensor and automatically switches to redundant sensor mode (such as dual-path tension sensor). (Sensor spare) to ensure the normal operation of the monitoring system, it includes two distance sensors 1001 fixedly installed on the inner wall of the mounting frame 1, used to measure the relative distance between the support rod 4 and the short side of the mounting frame 1; and a distance sensor 1002 fixedly installed on the support plate 603, used to measure the relative distance between the support plate 603 and the long side of the mounting frame 1. The control display screen 1003 is fixedly installed on one of the support legs 301. The built-in control unit receives all sensor signals, including the tension signal inside the traction head 8, the displacement signal of the hydraulic cylinder 304, and the position signals of each distance sensor, and displays them on the control display screen 1003. The system features digital and visual real-time display. During traction, if sensor data drift occurs (e.g., the displayed traction force does not match the actual force), the doctor can use the "one-click calibration" button on the display to perform sensor zero-point calibration and accuracy calibration. The calibration process does not require disassembly of components and takes ≤10 seconds. The doctor can intuitively read key parameters such as traction force value, device height value, and real-time coordinate position of traction head 8. The monitoring system also automatically stores data such as traction force, traction angle, traction head 8 coordinates, device height, and operation time in real time, with a storage period of ≥90 days. No experience-based judgment is required throughout the process, achieving fully data-driven control of the traction process. For ease of clinical operation, the control display screen 1003 is also equipped with physical buttons. Operators can control the lifting and lowering of the hydraulic cylinder 304, the start and stop of each servo motor, and the direction directly through the physical buttons without having to navigate through a complex touch screen menu. The control display screen 1003 also supports wireless projection, which can project real-time monitoring data to the large screen in the operating room for easy viewing by the entire surgical team. At the same time, doctors can connect to the device via Bluetooth on a mobile terminal (such as a tablet) in the operating room to view traction parameters in real time without having to approach the device, thus improving the convenience of surgical operations. This physical feedback operation method is particularly useful in emergency situations or when medical staff are wearing gloves.

[0037] Working process: First, the device is moved, leveled, height adjusted, and the bed is fixed. Then, the target traction parameters are set on the control display screen 1003. The system automatically controls the servo motors in sequence according to the priority of "support rod 4 horizontal → support frame 6 axial → traction head 8 angle". Servo motor 3 503 starts to drive synchronous pulley 501 to drive synchronous belt 502 to rotate at a constant speed. Synchronous belt 502 traction guide sleeve 701 slides along guide groove 2 of mounting frame 1, driving support rod 4 to move along the length direction of mounting frame 1. During the process, distance sensor 1001 collects the position data of support rod 4 in real time and feeds it back to the control unit. When support rod 4 approaches the preset position, servo motor 3 Servo motor 503 automatically slows down to micro-motion mode (speed decreases from 5cm / s to 0.5cm / s) to achieve precise positioning with an accuracy controlled within ±0.1cm. After positioning is completed by servo motor 3 503, servo motor 1 704 starts to drive the adjusting rod 703 to rotate, which in turn drives the movable block 602 and the support frame 6 to move along the axis of the support rod 4 via the threaded joint. At the same time, servo motor 2 705 can drive the support rod 4 to rotate around its own axis, adjusting the orientation of the support frame 6 (rotation angle range 0-180°, accuracy ±0.5°). During the process, distance sensor 2 1002 collects the position data of the support frame 6 in real time, forming a closed-loop control with servo motors 1 and 2 to avoid overtravel. After the frame 6 is positioned, servo motor 4 902 starts driving the rotating shaft 604 to rotate, which in turn drives the traction head 8 to rotate in the vertical plane (rotation angle range 0-90°) through the mounting sleeve 901. Combined with the traction angle value on the control display screen 1003, the traction head 8 is adjusted to a traction angle that fits the affected limb. After adjustment, servo motor 4 902 triggers a mechanical lock to prevent angle deviation during traction. The drive support rod 4 and traction head 8 are then quickly moved to the preset position. After connecting the traction head and traction head 8 and confirming the connection is in place, the target traction force (set according to the patient's age and fracture type) is input on the control display screen 1003, and the "Trial Traction" button is clicked. The system then drives... The servo motor slowly applies traction force, gradually increasing it from 0 to 50% of the target traction force over 10 seconds. During this process, the tension sensor monitors the traction force in real time. The doctor observes the initial reduction of the affected limb using X-ray fluoroscopy. If discomfort occurs, the trial traction can be interrupted at any time using the "pause" button to adjust the traction parameters. After the trial traction is normal, the traction program is started by clicking "formal traction." The system automatically adjusts the traction force according to preset parameters to achieve constant force traction / intermittent traction (customizable). The tension sensor feeds real-time traction force data back to the control unit. If the traction force fluctuates due to the patient's limb movement, the control unit automatically drives the servo motor to fine-tune the traction force, maintaining it at the target value ±0.Within a 2kg range, ensuring traction stability, the servo motor adjusts the position of the traction head 8 based on the position and force data from the monitoring and adjustment system 10, which provides full-process visual feedback. Precise and safe traction operations are completed with the assistance of a visual interface. During traction, the tension sensor continuously monitors the force; if the force exceeds the safety threshold, the system immediately alarms and automatically adjusts. After the procedure, the monitoring data can be exported to a USB drive via the display screen or sent to the Hospital Information System (HIS) via QR code scanning, enabling traceability of surgical data and meeting case archiving requirements. The entire process is recordable, viewable, and traceable. After treatment, all components automatically reset; unlocking the locking mechanism allows the device to be removed. The entire process achieves a high degree of automation, intelligence, and visualization, significantly reducing the workload of medical staff and improving the safety, stability, and adaptability of traction therapy.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An orthopedic traction device, characterized in that, include: Mounting frame; The support rod is movably mounted on the mounting frame; An electronically controlled drive unit, including a servo motor, is used to drive the support rod to move in at least one direction; A powerless manual adjustment unit includes a manual operating component and a threaded transmission pair connected to the manual operating component, used to independently drive the support rod to make powerless micro-movements in the same direction; The clutch mechanism is located on the transmission link between the electronically controlled drive unit and the support rod, and has a first state and a second state. In the first state, the electronically controlled drive unit is connected to the support rod, and the unpowered manual adjustment unit is disconnected from the support rod; In the second state, the transmission link between the electronically controlled drive unit and the support rod is disconnected, and the powerless manual adjustment unit is connected to the support rod.

2. The orthopedic traction device according to claim 1, characterized in that, The manual operating component is a fine-tuning rod, and the threaded transmission pair includes a lead screw fixedly connected to the fine-tuning rod and a moving block threadedly engaged with the lead screw. The moving block is directly or indirectly connected to the support rod.

3. The orthopedic traction device according to claim 1, characterized in that, The clutch mechanism is a mechanical clutch switch, which allows for manual switching between the first and second states.

4. The orthopedic traction device according to claim 1, characterized in that, It also includes a status detection unit, used to detect the current status of the clutch mechanism and output a status signal; The control unit is electrically connected to the electronically controlled drive unit and the status detection unit, and is configured to prevent the electronically controlled drive unit from starting when the status signal indicates the second status.

5. The orthopedic traction device according to any one of claims 1 to 4, characterized in that, Also includes: Multiple sensors, the multiple sensors including: A tension sensor is used to detect the traction force applied by the traction head; Displacement detection unit, used to detect the height of the device or the position of the traction head; Position sensors are used to detect the spatial coordinates of support rods or support frames; An electronically controlled drive unit is used to drive the movement of the traction head or support rod. Manual adjustment unit for fine-tuning of the traction head or support rod without power drive; The status recognition unit is used to identify whether the current adjustment mode is electronic control mode or manual mode; The control unit, electrically connected to the plurality of sensors, the electronically controlled drive unit, and the status recognition unit, is configured as follows: In the electronic control mode, the electronic drive unit is controlled in a closed loop based on the real-time feedback data from the multiple sensors to maintain the traction force or position within a preset range. In the manual mode, the closed-loop control of the electronically controlled drive unit is stopped, while the data output and display of the multiple sensors are maintained for the operator's reference. When the state recognition unit detects a change in adjustment mode, it automatically updates the control parameters to adapt to the new mode.

6. The orthopedic traction device according to claim 5, characterized in that, It also includes a mechanical locking mechanism that automatically locks the transmission link of the electronically controlled drive unit in the manual mode, physically separating it from the traction head or support rod.

7. The orthopedic traction device according to claim 6, characterized in that, In the manual mode and when the mechanical locking mechanism is locked, the traction tension of the traction head or support rod is maintained independently by the manual adjustment unit without the need for power supply from the electrical control system.

8. An orthopedic traction device, characterized in that, include: Support frame, used to mount the traction head; The adjusting rod is rotatably mounted on the support frame, and its surface is provided with an operating part and scale markings distributed along the axial direction; A threaded drive pair connects the adjusting rod to a moving part, and the moving part is directly or indirectly connected to the traction head; When the adjusting rod is rotated manually, it drives the traction head to make axial displacement in a set direction through the threaded transmission pair, and the threaded transmission pair provides tactile damping feedback that changes with displacement resistance during rotation. The scale markings are used to quantify the displacement of the traction head, so that the operator can use X-ray images to determine and correct its position.

9. The orthopedic traction device according to claim 8, characterized in that, Each rotation of the adjusting rod corresponds to a displacement of 0.02cm to 0.05cm for the traction head.

10. The orthopedic traction device according to claim 8, characterized in that, It also includes a damping adjustment structure for adjusting the rotational resistance of the threaded drive pair to change the sensitivity of the tactile damping feedback.

11. The orthopedic traction device according to claim 8, characterized in that, The operating part is a knurled knob or a handle with anti-slip texture.

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