Simple detachable traction device for fracture surgery

Abstract

The present application relates to the technical field of traction device, in particular to a simple and detachable traction device in fracture surgery, which comprises a folding mechanism installed at one end of a patient's bed for adjusting the length of traction according to the length of the patient's lower limbs, an adjusting mechanism installed on the folding mechanism for self-adaptive adjustment according to the angle of traction of the patient's lower limbs, and a traction mechanism installed on the folding mechanism for improving the stability of the traction weight. The device is composed of the folding mechanism, the adjusting mechanism and the traction mechanism, and is unfolded or recovered through mutual folding and sliding. Compared with the traditional traction device which is assembled separately by taking a large number of connecting pieces off the placing rack, the device has the effects of convenient and quick disassembly and small floor area. Meanwhile, the setting of the traction mechanism further improves the stability of the traction weight, reduces the influence of external force on the traction weight, and enhances the stability of the device in traction angle.

Description

A simple, detachable intraoperative traction device for fracture surgery Technical Field

[0001] This invention relates to the field of traction device technology, and specifically to a simple, detachable intraoperative traction device for fracture surgery. Background Technology

[0002] Traction devices during fracture surgery are widely used in orthopedics. Their main function is to use the weights, rollers, ropes, and traction bows in the traction device to apply gravity traction to the puncture needle that has penetrated the bone, thereby correcting the fractured bone and repositioning it, and preventing muscle contraction from causing the fractured bone to shift.

[0003] Traditional traction devices used in fracture surgery for the lower limbs lack adjustment mechanisms, making it impossible to meet the traction angles required for different fracture points. Furthermore, the suspended weights lack limiting components, making them susceptible to violent swaying due to external forces, altering the traction angle, affecting the traction effect, and increasing patient discomfort. To address these issues, a more easily adjustable traction device for lower limb fracture surgery has been developed. This device utilizes a modular structure, connecting multiple components through splicing, locking, and knob fastening. While this allows for free adjustment of the traction angle, the numerous connecting structures lead to complex assembly and disassembly, and a large footprint. Additionally, it still lacks a limiting function to resist external forces on the suspended weights providing gravity.

[0004] In view of this, we propose a simple and detachable intraoperative traction device for fracture surgery. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings mentioned in the background art and provide a simple, detachable intraoperative traction device for fracture surgery.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A simple, detachable intraoperative traction device for fracture surgery, comprising:

[0008] A folding mechanism, installed at one end of the patient's bed, is used to adjust the traction length according to the length of the patient's lower limbs;

[0009] An adjustment mechanism is mounted on the folding mechanism and is used for adaptive adjustment according to the traction angle of the patient's lower limb;

[0010] The traction mechanism, mounted on the folding mechanism, is used to improve the stability of traction of heavy objects.

[0011] Preferably, the folding mechanism includes a first folding plate and a second folding plate. One end of the first folding plate is connected to the patient's bed. Each of the first and second folding plates has a groove at its opposite end, and a connecting rod is slidably connected in the groove. The opposite ends of the two connecting rods are rotatably connected to a connecting block by means of a pin.

[0012] Preferably, a locking block is fixedly installed on the top of the connecting block by bolts, and the outer ring contour size of the connecting block is the same as the inner ring contour size of the groove.

[0013] Preferably, the adjustment mechanism includes two fixing bars, which are respectively fixedly connected to the top of the corresponding first folding plate and second folding plate. Each of the two fixing bars is slidably connected to a slider. A rectangular sleeve is rotatably connected to the top of the slider. A support rod is slidably connected inside the rectangular sleeve. An arc-shaped support frame for supporting the patient's lower limb is rotatably connected to the top of the support rod. A fastening knob adapted to the slider and the rectangular sleeve rotation point, the support rod and the arc-shaped support frame rotation point, and the rectangular sleeve near the top are all provided to improve the stability between the connecting parts.

[0014] Preferably, both ends of the fixing strip are fixedly connected with blocks by screws to prevent the slider from sliding out of the range of the fixing strip, and the size of the blocks is adapted to the size of the slider.

[0015] Preferably, one end of the first folding plate is provided with a hook groove for matching the end railing of the patient's bed. The hook groove is cross-shaped. The first folding plate is also provided with a slot at the top of the hook groove, and a plug that matches the hook groove is inserted into the slot. A plug rod for connecting to an external plug with a hole is fixedly connected to the first folding plate near the lower surface of the hook groove.

[0016] Preferably, both the first folding plate and the second folding plate have slots on both sides, and the two slots on the second folding plate are rotatably connected with connecting straps for connecting the slots on the first folding plate.

[0017] Preferably, the traction mechanism includes two fixed plates fixedly connected to one end of the second folding plate opposite to the first folding plate. A traction frame is slidably connected between the two fixed plates. The top of the traction frame has a groove, and a traction box is rotatably connected in the groove. A fixed pulley is fixedly connected in the traction box, and a movable pulley is slidably connected in the traction box. A first traction rope is fixedly connected to the side of the movable pulley away from the fixed pulley. A traction bow for connecting a steel needle is fixedly connected to the end of the first traction rope away from the movable pulley. A second traction rope is wound between the fixed pulley and the movable pulley, and the second traction rope is wound with the fixed pulley and the movable pulley in a pulley block manner. The end of the second traction rope away from the movable pulley passes through the traction box and is wound with a winding roller. A motor is fixedly connected to the side of the traction box near the winding roller, and the output shaft of the motor is inserted and fixedly connected to the winding roller.

[0018] Preferably, a tension sensor is fixedly connected to one end of the second traction rope located between the fixed pulley and the movable pulley, and the other end of the tension sensor is fixedly connected to the fixed pulley.

[0019] Preferably, the traction frame has limit grooves on both sides, and multiple positioning holes are provided in the limit grooves. Each of the two fixed plates is fixedly connected to a limit block that matches the limit groove on the opposite side, and a positioning block that matches the positioning hole is provided through it.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The design of the hook groove and the insertion rod allows for a wider range of applications for external support components in different environments, meeting more connection needs. At the same time, the unique shape of the hook groove allows for quick and stable engagement with traditional hospital bed metal railings, improving connection efficiency. In addition, after the insertion rod is inserted into the slot, it can further abut and limit the metal railing engaged in the hook groove, enhancing the stability of the connection between the first folding plate and the hospital bed.

[0022] 2. By adjusting the position of the connecting block between the first and second folding plates and the two connecting rods within the slide groove, the mutual connection and extension effect can be achieved. This allows for free adjustment of the support position for the lower limbs according to the length of the patient's lower limbs and the traction length, facilitating traction by medical staff. Simultaneously, by rotating the angle of the two connecting rods on the connecting block, the first and second folding plates can be folded, facilitating storage of the device and reducing its footprint. Furthermore, the mutual adaptation of the limiting groove and positioning hole allows for free movement and rotation of the traction box, enabling the traction frame to move and turn freely within the fixed plate, facilitating folding and unfolding of the traction frame.

[0023] 3. Driven by the motor output shaft, the winding roller winds up the second traction rope. As the second traction rope winds up, the movable pulley continuously moves closer to the fixed pulley under the traction force of the second traction rope, pulling the first traction rope and the winding roller closer to the traction box, thus achieving a gravity traction effect. The magnitude of the traction force is related to the number of rotations of the output shaft, and it has the effect of automatically adjusting the tension according to the needs. Compared with the traditional use of a counterweight, the tension value is more precise and easier to control. The design of the fixed pulley and movable pulley utilizes the principle of a pulley system, which saves more effort and reduces the power consumption of the equipment. The wound second traction rope is also more stable than the traditional single-line routing method, making the traction force of the device more stable. Furthermore, with the help of the tension sensor, the tension can be monitored in real time and displayed on an external display screen. When the tension data shows continuous large fluctuations, an early warning signal can be sent to the external controller to remind medical staff to check the patient's condition, achieving the effect of monitoring the traction force and providing early warning. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0025] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 is a schematic cross-sectional view of the overall structure of the present invention;

[0027] Figure 3 is a schematic diagram of the structure of the first folding plate and the second folding plate in this invention;

[0028] Figure 4 is a schematic diagram of the structure of the first folding plate in this invention;

[0029] Figure 5 is a schematic diagram of the structure of the traction frame and traction box in this invention;

[0030] Figure 6 is a schematic diagram of the structure of the traction box and traction bow in this invention;

[0031] Figure 7 is a cross-sectional view of the traction box in this invention.

[0032] The meanings of the labels in the diagram are as follows:

[0033] 1. Folding mechanism; 11. First folding plate; 12. Second folding plate; 13. Slide groove; 14. Connecting rod; 15. Connecting block; 16. Locking block; 2. Adjustment mechanism; 21. Fixing strip; 22. Sliding block; 23. Rectangular sleeve; 24. Support rod; 25. Arc-shaped support frame; 26. Stop block; 3. Traction mechanism; 31. Fixing plate; 311. Limiting block; 312. Positioning block; 32. Traction frame; 321. Limiting groove; 322. Positioning hole; 323. Groove; 33. Traction box; 34. Fixed pulley; 35. Moving pulley; 36. Tension sensor; 37. First traction rope; 371. Second traction rope; 38. Winding roller; 39. Motor; 310. Traction bow; 4. Hook groove; 41. Insertion block; 42. Insertion rod; 5. Locking groove; 51. Connecting belt. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. 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.

[0035] Please refer to Figures 1-7. The present invention will describe the above technical solution in detail through the following embodiments:

[0036] A simple, detachable intraoperative traction device for fracture surgery, comprising:

[0037] A folding mechanism (1) is installed at one end of the patient's bed to adjust the traction length according to the length of the patient's lower limbs;

[0038] The adjustment mechanism (2) is installed on the folding mechanism (1) and is used to make adaptive adjustments according to the traction angle of the patient's lower limb;

[0039] The traction mechanism (3) is installed on the folding mechanism (1) to improve the stability of the traction load.

[0040] The device is composed of a folding mechanism (1), an adjusting mechanism (2), and a traction mechanism (3). It can be unfolded or retracted by folding and sliding each other. Compared with traditional traction devices that require individual assembly by removing a large number of connecting parts from the placement frame, this device is convenient and quick to assemble and disassemble, and has a small footprint. At the same time, the setting of its traction mechanism (3) further improves the stability of the traction load, reduces the influence of external forces on the traction load, and enhances the stability of the traction angle of the device.

[0041] Please refer to Figures 1-3. The folding mechanism (1) includes a first folding plate (11) and a second folding plate (12). One end of the first folding plate (11) is connected to the patient's bed. The first folding plate (11) and the second folding plate (12) are provided with a sliding groove (13) at opposite ends. A connecting rod (14) is slidably connected in the sliding groove (13). The opposite ends of the two connecting rods (14) are rotatably connected to a connecting block (15) through a pin.

[0042] Furthermore, according to the above settings, the first folding plate (11) and the second folding plate (12) can be connected and extended to each other through the connecting block (15) and two connecting rods (14). This allows for free adjustment of the support position of the lower limbs according to the length of the patient's lower limbs and the traction length, making it convenient for medical staff to perform traction. At the same time, since the two connecting rods (14) are rotatably connected to the connecting block (15), by rotating the angle of the two connecting rods (14) on the connecting block (15), the first folding plate (11) and the second folding plate (12) can be folded, making it convenient to store the device and reducing the floor space occupied.

[0043] Please refer to Figures 1-2. The top of the connecting block (15) is fixedly installed with a locking block (16) by bolts. The outer ring of the connecting block (15) is the same size as the inner ring of the groove (13).

[0044] The outer contour of the connecting block (15) is the same as the inner contour of the groove (13). When the connecting block (15) is exposed between the first folding plate (11) and the second folding plate (12), the clamping block (16) is fixedly installed on the top of the connecting block (15) by bolts. This can achieve the effect of covering and pressing the two connecting rods (14), thereby improving the stability between the connecting rods (14) and the connecting block (15) and preventing the connecting rods (14) and the connecting block (15) from rotating during the traction process, which would affect the traction effect.

[0045] Please refer to Figures 1-3. The adjustment mechanism (2) includes two fixing bars (21). The two fixing bars (21) are fixedly connected to the top of the corresponding first folding plate (11) and second folding plate (12). Each of the two fixing bars (21) is slidably connected to a slider (22). The top of the slider (22) is rotatably connected to a rectangular sleeve (23). The rectangular sleeve (23) is slidably connected to a support rod (24). The top of the support rod (24) is rotatably connected to an arc-shaped support frame (25) for supporting the patient's lower limbs. The slider (22) and the rectangular sleeve (23) rotation points, the support rod (24) and the arc-shaped support frame (25) rotation points, and the rectangular sleeve (23) near the top are all provided with matching fastening knobs to improve the stability between the connecting parts.

[0046] By sliding the slider (22) located on the first folding plate (11) and the second folding plate (12), it can slide stably on the fixed bar (21), thereby driving the rectangular sleeve (23), the support rod (24) and the arc support frame (25) to move. During this process, the position of the support rod (24) inside the rectangular sleeve (23) can also be stretched up and down. When it moves to a specified position and a specified height, it can be reinforced by the corresponding fastening knob to enhance the stability of the adjusted structure and solve the problem that the traditional device is inconvenient to adjust the support angle and traction angle. At the same time, the setting of two sets of adjustment mechanisms (2) can provide separate support for the patient's thigh and lower leg foot, further improving the stability of the support and increasing the applicability of the device to different traction angles.

[0047] Please refer to Figures 1-2. Both ends of the fixing strip (21) are fixedly connected with blocks (26) to prevent the slider (22) from going out of the range of the fixing strip (21) by screws. The size of the blocks (26) is adapted to the size of the slider (22).

[0048] Furthermore, by setting the two stops (26) accordingly, the slider (22) can be limited to prevent it from sliding out of the range of the fixed bar (21). At the same time, it can facilitate the replacement and maintenance of the slider (22) and the connected structure at any time.

[0049] Please refer to Figures 1-3. One end of the first folding plate (11) is provided with a hook groove (4) for matching the end railing of the patient's bed. The hook groove (4) is cross-shaped. The first folding plate (11) is also provided with a slot at the top of the hook groove (4), and a plug (41) that matches the hook groove (4) is inserted into the slot. The first folding plate (11) is fixedly connected with a plug rod (42) for connecting to an external plug with a hole near the lower surface of the hook groove (4).

[0050] Furthermore, the hook groove (4) and the insert rod (42) can be set to achieve a wider range of applications for external support components in different environments, meet more connection needs, and the unique shape of the hook groove (4) can achieve quick and stable engagement with traditional hospital bed metal railings, improving connection efficiency. In addition, after the insert rod (42) is inserted into the slot, it can further abut and limit the metal railing engaged in the hook groove (4), enhancing the stability of the connection between the first folding plate (11) and the hospital bed.

[0051] Please refer to Figures 1-3. Both sides of the first folding plate (11) and the second folding plate (12) are provided with slots (5). The two slots (5) on the second folding plate (12) are rotatably connected with connecting strips (51) for connecting the slots (5) on the first folding plate (11).

[0052] After the first folding plate (11) and the second folding plate (12) are used and folded for storage, the two connecting straps (51) are rotated to engage with the corresponding slots (5) on the first folding plate (11), thereby constraining the first folding plate (11), improving the stability of the first folding plate (11) and the second folding plate (12) after folding and storage, and preventing them from unfolding again.

[0053] Please refer to Figures 1-7. The traction mechanism (3) includes two fixed plates (31) fixedly connected to one end of the second folding plate (12) opposite to the first folding plate (11). A traction frame (32) is slidably connected between the two fixed plates (31). The top of the traction frame (32) is provided with a groove (323), and a traction box (33) is rotatably connected in the groove (323). A fixed pulley (34) is fixedly connected in the traction box (33), and a movable pulley (35) is slidably connected in the traction box (33). A first traction rope (37) is fixedly connected to the side of the movable pulley (35) away from the fixed pulley (34). (37) A traction bow (310) for connecting steel needles is fixedly connected to one end away from the movable pulley (35). A second traction rope (371) is wound between the fixed pulley (34) and the movable pulley (35). The second traction rope (371) is wound with the fixed pulley (34) and the movable pulley (35) in a pulley block manner. One end of the second traction rope (371) away from the movable pulley (35) passes through the traction box (33) and is wound with a winding roller (38). A motor (39) is fixedly connected to the side of the traction box (33) near the winding roller (38). The output shaft of the motor (39) is inserted and fixed to the winding roller (38).

[0054] When using the traction mechanism (3), the steel needle that has been punctured into the patient's bone needs to be secured first with the traction bow (310). Then, the motor (39) is started. Driven by the output shaft of the motor (39), the winding roller (38) winds up the second traction rope (371). At this time, as the second traction rope (371) winds up, the movable pulley (35) will continue to move closer to the fixed pulley (34) under the traction force of the second traction rope (371), and pull the first traction rope (37) and the winding roller (38). 8) Move closer to the traction box (33) to achieve the effect of gravity traction. The magnitude of the traction force is related to the number of rotations of the output shaft. It has the effect of automatically adjusting the pulling force according to the needs. Compared with the traditional use of a weight, the pulling force value is more accurate and easier to control. The design of the fixed pulley (34) and the movable pulley (35) is based on the principle of the pulley group, which is more labor-saving and reduces the power consumption of the equipment. The second traction rope (371) is also more stable than the traditional single-line method, making the traction force of the device more stable.

[0055] Please refer to Figures 3-7. One end of the second traction rope (371) located between the fixed pulley (34) and the movable pulley (35) is fixedly connected to a tension sensor (36), and the other end of the tension sensor (36) is fixedly connected to the fixed pulley (34).

[0056] By installing a tension sensor (36) at the end of the second traction rope (371), the tension can be monitored in real time and displayed on an external display screen. When the tension data fluctuates continuously over a wide range, an early warning signal can be sent to the external controller to remind medical staff to come and check on the patient's condition, thus achieving the effect of monitoring the traction force and issuing an early warning.

[0057] Please refer to Figures 1-5. The traction frame (32) has limit grooves (321) on both sides. Multiple positioning holes (322) are provided in the limit grooves (321). The two fixing plates (31) are fixedly connected to the opposite side with limit blocks (311) that are adapted to the limit grooves (321), and positioning blocks (312) that are adapted to the positioning holes (322) are provided through them.

[0058] By matching the limiting groove (321) and the positioning hole (322), the traction box (33) can move and rotate freely, so that the traction frame (32) can move and turn freely within the fixed plate (31), making it convenient to fold and unfold the traction frame (32). The positioning hole (322) and the positioning block (312) that matches it can position the traction frame (32) after adjusting its height, so that it maintains a stable traction height.

[0059] The working principle of this embodiment of a simple detachable fracture traction device is as follows: Before use, the device can achieve a wider range of applications for external support components in different environments by setting the hook groove (4) and the insertion rod (42), and meet more connection needs. At the same time, the unique shape of the hook groove (4) can achieve quick and stable engagement with the traditional hospital bed metal railing, improving the connection efficiency. In addition, after the insertion rod (42) is inserted into the slot, it can further abut and limit the metal railing engaged in the hook groove (4), enhancing the stability of the connection between the first folding plate (11) and the hospital bed.

[0060] When in use, this device can achieve the effect of interconnection and extension by adjusting the position of the connecting block (15) between the first folding plate (11) and the second folding plate (12) and the two connecting rods (14) in the slide (13). It can freely change the support position of the lower limb according to the length of the patient's lower limb and the traction length, which is convenient for medical staff to perform traction. At the same time, since the two connecting rods (14) are rotatably connected to the connecting block (15), by rotating the angle of the two connecting rods (14) on the connecting block (15), the first folding plate (11) and the second folding plate (12) can be folded, which is convenient. The device is stored away to reduce its footprint. The limiting groove (321) and the positioning hole (322) are matched to each other, which can achieve the effect of free movement and rotation of the traction box (33). This allows the traction frame (32) to move and turn freely within the fixed plate (31), making it convenient to fold and unfold the traction frame (32). The positioning hole (322) and the matching positioning block (312) can position the traction frame (32) after adjusting its height, so that it maintains a stable traction height. This achieves the effect of convenient adjustment and quick assembly and disassembly, and has the advantage of small footprint.

[0061] Subsequently, the steel needle that has been punctured into the patient's bone is secured using the traction bow (310). Then, the motor (39) is started. Driven by the output shaft of the motor (39), the winding roller (38) winds up the second traction rope (371). At this time, as the second traction rope (371) winds up, the movable pulley (35) will continuously move closer to the fixed pulley (34) under the traction force of the second traction rope (371), and pull the first traction rope (37) and the winding roller (38) closer to the traction box (33), thereby achieving the effect of gravity traction. The magnitude of the traction force is related to the number of rotations of the output shaft. It has the effect of automatically adjusting the pulling force according to the needs. Compared with the traditional use of a weight, the pulling force value is more precise and easier to control. The design of the fixed pulley (34) and the movable pulley (35) is based on the principle of the pulley group, which is more labor-saving and reduces the power consumption of the equipment. The wound second traction rope (371) is also more stable than the traditional single-line method, making the traction force of the device more stable.

[0062] It is worth noting that by setting a tension sensor (36) at the end of the second traction rope (371), the tension can be monitored in real time and displayed on an external display screen. When the tension data fluctuates continuously over a wide range, an early warning signal can be sent to the external controller to remind medical staff to come and check on the patient's condition, thus achieving the effect of monitoring the traction force and issuing an early warning.

[0063] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0064] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0065] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A simple, detachable intraoperative traction device for fracture surgery, characterized in that, include: Folding mechanism (1) is installed at one end of the patient's bed to adjust the traction length according to the length of the patient's lower limbs; The adjustment mechanism (2) is installed on the folding mechanism (1) and is used for adaptive adjustment according to the traction angle of the patient's lower limbs; the traction mechanism (3) is installed on the folding mechanism (1) and is used to improve the stability of the traction weight; the folding mechanism (1) includes a first folding plate (11) and a second folding plate (12), one end of the first folding plate (11) is connected to the patient's bed, and the opposite ends of the first folding plate (11) and the second folding plate (12) are provided with a sliding groove (13), and a connecting rod (14) is slidably connected in the sliding groove (13), and the opposite ends of the two connecting rods (14) are rotatably connected to a connecting block (15) through a pin; the adjustment mechanism (2) includes two fixing bars (21), the two fixing bars (21) are respectively fixedly connected to the top of the corresponding first folding plate (11) and second folding plate (12), and the two fixing bars (21) are limited and slidably connected to a slider (22), the slider (22) A rectangular sleeve (23) is rotatably connected to the top of the first folding plate (11), and a support rod (24) is slidably connected inside the rectangular sleeve (23). An arc-shaped support frame (25) for supporting the patient's lower limbs is rotatably connected to the top of the support rod (24). A fastening knob adapted to the rotation point of the slider (22) and the rectangular sleeve (23), the rotation point of the support rod (24) and the arc-shaped support frame (25), and the rectangular sleeve (23) near the top are all provided to improve the stability between the connecting parts. A hook groove (4) adapted to the end railing of the patient's bed is opened at one end of the first folding plate (11). The hook groove (4) is cross-shaped. A slot is also opened at the top of the hook groove (4) of the first folding plate (11), and a plug (41) adapted to the hook groove (4) is inserted into the slot. A plug rod (42) for connecting to an external plug with a hole is fixedly connected to the lower surface of the first folding plate (11) near the hook groove (4).The traction mechanism (3) includes two fixed plates (31) fixedly connected to one end of the second folding plate (12) opposite to the first folding plate (11). A traction frame (32) is slidably connected between the two fixed plates (31). A groove (323) is provided on the top of the traction frame (32), and a traction box (33) is rotatably connected in the groove (323). A fixed pulley (34) is fixedly connected in the traction box (33), and a movable pulley (35) is slidably connected in the traction box (33). A first traction rope (37) is fixedly connected to the side of the movable pulley (35) away from the fixed pulley (34). The first traction rope (37) is located away from the fixed pulley (34). One end of the movable pulley (35) is fixedly connected to a traction bow (310) for connecting steel needles. A second traction rope (371) is wound between the fixed pulley (34) and the movable pulley (35), and the second traction rope (371) is wound with the fixed pulley (34) and the movable pulley (35) in a pulley block manner. The end of the second traction rope (371) away from the movable pulley (35) passes through the traction box (33) and is wound with a winding roller (38). A motor (39) is fixedly connected to the side of the traction box (33) near the winding roller (38), and the output shaft of the motor (39) is inserted and fixed to the winding roller (38).

2. The simple, detachable intraoperative traction device for fracture surgery as described in claim 1, characterized in that: The top of the connecting block (15) is fixedly installed with a locking block (16) by bolts. The outer ring of the connecting block (15) is the same size as the inner ring of the slide groove (13).

3. The simple, detachable intraoperative traction device for fracture surgery as described in claim 1, characterized in that: Both ends of the fixing strip (21) are fixedly connected with a stop block (26) by screws to prevent the slider (22) from crossing the range of the fixing strip (21). The size of the stop block (26) is adapted to the size of the slider (22).

4. The simple, detachable intraoperative traction device for fracture surgery as described in claim 1, characterized in that: Both sides of the first folding plate (11) and the second folding plate (12) are provided with slots (5), and the two slots (5) on the second folding plate (12) are rotatably connected with connecting straps (51) for connecting the slots (5) on the first folding plate (11).

5. A simple, detachable intraoperative traction device for fracture surgery as described in claim 1, characterized in that: The second traction rope (371) has a tension sensor (36) fixedly connected at one end between the fixed pulley (34) and the movable pulley (35), and the other end of the tension sensor (36) is fixedly connected to the fixed pulley (34).

6. A simple, detachable intraoperative traction device for fracture surgery as described in claim 1, characterized in that: The traction frame (32) has a limit groove (321) on both sides, and a plurality of positioning holes (322) are provided in the limit groove (321). The two fixing plates (31) are fixedly connected to a limit block (311) that is compatible with the limit groove (321) on opposite sides, and a positioning block (312) that is compatible with the positioning hole (322) is provided through it.

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