Auxiliary traction device for orthopedics department

Abstract

The invention belongs to the technical field of orthopedic traction, and relates to an orthopedic auxiliary traction device which comprises a seat and a first fixing unit fixedly arranged on the inner side of a fixing plate. Air pressure needed by initial traction can be automatically adjusted according to the leg circumference of a patient, individualized accurate control over traction force is achieved, the traction force is gradually increased from the minimum threshold value by means of the driving box, safe and progressive loading of traction force is achieved, the progressive principle of joint adhesion treatment is met, the device can apply controllable pressure to the arch at the last stage of traction, and the traction effect is good. Furthermore, local pressure overload is avoided through pressure limiting protection of the fifth piston, and the safety of the patient is guaranteed while the treatment effect is improved; according to the whole structure, through the synergistic effect of gas-liquid linkage and mechanical limiting, automatic pressure adaptation, progressive traction and safety protection functions are integrated, and the comfort, effectiveness and safety of orthopedic traction treatment are remarkably optimized.

Description

Technical Field

[0001] The present invention belongs to the technical field of orthopedic traction, and in particular relates to an orthopedic auxiliary traction device. Background Art

[0002] Joint adhesions may occur after fracture surgery. This is a common complication caused by long-term immobilization, traumatic stress, or improper rehabilitation, and is particularly common in the knee joint. Traction therapy is a commonly used treatment method. As a key device for traction therapy, the performance of orthopedic assisted traction devices directly affects the treatment effect and patient experience. Existing orthopedic assisted migration devices have the following problems: 1. Traditional traction devices mostly rely on manual operation to adjust the traction force, which makes it difficult to control the pressure according to individual patient differences. This may result in excessive traction force causing tissue damage, or insufficient traction force affecting the treatment effect. 2. The traction force of traditional traction devices is fixed during traction. Excessive traction force at the beginning may cause damage to the fibers near the knee joint.

[0003] Therefore, what is needed is an orthopedic auxiliary traction device that can automatically adjust the traction force according to the patient's leg circumference and the traction force can be increased from small to large to solve the above problems. Summary of the Invention

[0004] In response to the above situation, in order to overcome the defects of the prior art, the present invention can automatically adjust the air pressure required for initial traction according to the patient's leg circumference, thereby realizing individualized and precise control of the traction force. With the help of the rotating baffle in the drive box, the intermittent transmission of the friction disc and the ratchet pawl mechanism, the traction force is gradually increased from the minimum threshold, thereby realizing safe and progressive loading of the traction force, which is in line with the step-by-step principle of joint adhesion treatment. The telescopic sleeve and the pressure limiting cylinder at the pressure foot plate can apply controllable pressure to the arch of the foot at the end of traction to further stretch the knee joint ligament, and the pressure limiting protection of the piston five avoids local pressure overload, thereby improving the treatment effect and ensuring the safety of the patient. The overall structure integrates automatic pressure adaptation, progressive traction and safety protection functions into one through the synergistic effect of gas-liquid linkage and mechanical limit, which significantly optimizes the comfort, effectiveness and safety of orthopedic traction treatment. The technical solution adopted by the present invention is as follows: An orthopedic auxiliary traction device includes a seat, fixed plates symmetrically fixed on both sides of the seat, and a movable plate rotatably mounted on the fixed plates, further comprising a fixing unit 1 fixedly mounted on the inner side of the fixed plates, a water tank fixedly mounted on the fixed plates, a pressure regulating box fixedly mounted on the fixed plates, a drive box fixedly mounted on the outer side of the fixed plates, and an air pump fixedly mounted on the outer side of the fixed plates, wherein a baffle shaft is rotatably mounted in the drive box, a rotating baffle is fixedly mounted on the circumferential surface of the baffle shaft, a sliding cover is slidably mounted on one end of the baffle shaft, a partition is fixedly mounted in the drive box, the partition functions to limit the upward rotation angle of the rotating baffle and also serves as a seal, a limit baffle is fixedly mounted in the drive box, the limit baffle functions to limit the downward movement angle of the rotating baffle, the baffle shaft is hollow, an air pipe 4 is opened on the sliding cover, the air pipe 4 is connected to the outside, and an electromagnetic valve is fixedly mounted on the baffle shaft, and when the electromagnetic valve is turned on, the interior of the drive box can be connected to the outside of the drive box via the air pipe 4.

[0005] As an optimal technical solution of this scheme, the air outlet of the air pump is connected to the drive box via air pipe 1, and the drive box is connected to the bottom of the pressure regulating box via air pipe 2. A piston three is provided for sliding in the pressure regulating box, and a linkage rod is provided for sliding on the piston three. A piston one is provided for sliding in the water tank, and the other end of the linkage rod is fixedly connected to piston one. The function of the linkage rod is to drive piston three to move downward via the linkage rod when piston one moves downward. A spring one is fixedly provided at the bottom of piston one, and the other end of the spring one is fixedly connected to the bottom wall of the water tank. The function of spring one is to push piston one to move upward to squeeze the water at the top of the water tank.

[0006] As a preferred technical solution of this scheme, a mounting plate is fixedly provided on the fixed plate, a ratchet is rotatably provided on the mounting plate, a gear one is coaxially fixed on one side of the ratchet, a gear two is rotatably provided on the mounting plate, the gear one is meshed with the gear two, a rack is fixed on one side of the piston three, the gear two is meshed with the rack, a pawl is rotatably provided on the mounting plate, the pawl corresponds to the ratchet, and the function of the ratchet is to make the piston three move downward only.

[0007] As an optimal technical solution of this scheme, a spring four is fixedly provided on the sliding cover, and the other end of the spring four is fixedly connected to the baffle shaft. A friction disc one is fixedly provided on the sliding cover, and a friction disc two is fixedly provided on one side of the gear one. The friction disc one is in pressure contact with the friction disc two to realize intermittent transmission. Only when the solenoid valve is opened, under the action of the airflow, the sliding cover slides toward the gear one, and the friction disc one is tightly fitted with the friction disc two, and the friction disc one can drive the friction disc two to rotate. When the solenoid valve is closed, the sliding cover is reset under the action of the spring four, and the friction disc one and the friction disc two are no longer in close contact. This can avoid friction damage between the friction disc one and the friction disc two when the patient's legs move upward.

[0008] As an optimal technical solution of this scheme, a piston four is slidingly provided in the pressure regulating box, a retaining ring is fixed in the pressure regulating box, and the retaining ring serves as a limiter for the piston four, a spring two is fixed on the piston four, and the other end of the spring two is fixedly connected to the piston three, and a micro switch is fixed on the inner wall of the pressure regulating box above the piston four, and the micro switch is electrically controlled and connected to the solenoid valve. When the air pressure in the drive box rises to a level that can push the piston four to move, the piston four contacts the micro switch solenoid valve to open, and the function of the spring two is to continuously increase the pressure required to push the piston four to move upward through the continuous compression of the spring two, and the gear two and the air pipe two are staggered to prevent the air pipe two from blocking the downward movement of the rack. The downward movement of the piston one drives the downward movement of the piston three, which can increase the initial pressure required to push the piston four to move upward.

[0009] As an optimal technical solution of this scheme, the movable plate is provided with a pressure foot slidingly, and the pressure foot plate is fixedly provided with a rubber pad, and the movable plate is fixedly provided with a telescopic sleeve, the movable end of the telescopic sleeve is fixedly connected to the pressure foot plate, and the side wall of the base end of the telescopic sleeve is fixedly provided with a pressure limiting cylinder 2, and a piston 5 is slidably provided in the pressure limiting cylinder 2, and a spring 3 is fixedly provided on one side of the piston 5, and the other end of the spring 3 is fixedly connected to the pressure limiting cylinder 2, and an air pipe 5 is opened on the pressure limiting cylinder 2, and the base of the telescopic sleeve can be penetrated with the outside through the air pipe 5, and the driving box is connected to the base of the telescopic sleeve through the air pipe 3 pipeline, and the piston 5 blocks the air flow from flowing out through the air pipe 5. When the air pressure at the base of the telescopic sleeve rises to a pressure that can push the piston 5 to move, the air flow pushes the piston 5 to move, and then the air flow can flow out through the air pipe 5, so as to avoid excessive pressure exerted by the pressure foot plate on the patient's foot, causing damage to the patient.

[0010] As an optimal technical solution of this scheme, the fixed unit one includes a clamping arc plate two fixed on the inner side of the fixed plate, a clamping arc plate one rotatably arranged on the clamping arc plate two, a water bag one fixed on the clamping arc plate one, and a water bag two fixed on the clamping arc plate two. The clamping arc plate one is fixed with a buckle, and the buckle can fix the clamping arc plate one on the clamping arc plate two. The water bag one and the water bag two are connected with the top of the water tank via the water outlet pipe. The movable plate is fixed with a fixed unit two. The fixed unit two has the same structure and the same connection method as the fixed unit one. The water bag one and the water bag two corresponding to the fixed unit two are connected with the top of the water tank via the water outlet pipe.

[0011] After adopting the above structure, the beneficial effects of the present invention are as follows: (1) The intermittent transmission structure of the rotating baffle and the friction disc in the drive box, combined with the one-way locking function of the ratchet pawl, realizes that the traction force gradually increases from the "minimum effective threshold". During the first traction, the airflow pushes the rotating baffle to drive the calf to lift slightly. When the air pressure triggers the micro switch of piston four, the solenoid valve opens to make the friction disc engage the gear set, driving piston three to move down and pre-compress spring two, so that the next traction requires a higher atmospheric pressure to start, forming a "step-by-step increase in force" mode to avoid fiber damage caused by the initial traction impact; (2) Through the linkage design of the water bag group and piston 1 in the fixed units 1 and 2, the patient's leg circumference can be automatically converted into piston displacement, accurately matching the initial traction air pressure. The larger the leg circumference, the greater the downward stroke of piston 1. The linkage rod drives piston 3 to pre-compress spring 2, so that the subsequent traction starting pressure threshold is dynamically adjusted according to individual differences, avoiding overload or insufficient traction caused by traditional manual adjustment; (3) The combined structure of the telescopic sleeve and the pressure-limiting cylinder 2 at the foot presser plate allows air to be introduced through the trachea 3 at the end of the traction phase to push the foot presser plate to squeeze the arch of the foot, forming a combined stretching mode of "knee joint traction + arch compression". The pressure-limiting protection mechanism composed of the piston 5 and the spring 3 automatically releases the pressure through the trachea 5 when the air pressure exceeds the safe value, thus avoiding local pressure overload in the arch of the foot and enhancing the traction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention.

[0013] Figure 1 This is a schematic diagram of the overall structure of an orthopedic auxiliary traction device of the present invention; Figure 2 This is a schematic diagram of the connection structure between the water tank and the pressure regulating tank of the present invention; Figure 3 for Figure 2 A magnified view of the local structure at point B in the middle; Figure 4 This is a cross-sectional view of the connection structure of the drive box in the present invention; Figure 5 Schematic diagram of the connection structure between the baffle shaft and the movable plate in the present invention; Figure 6 for Figure 5 A magnified view of the local structure at point C in the middle; Figure 7 Schematic diagram of the connection structure between the linkage rod and the piston three in the present invention; Figure 8 Schematic diagram of the connection structure between the presser foot and the movable plate in the present invention; Figure 9 for Figure 1 A magnified view of the local structure at point A.

[0014] In the accompanying drawings: 1. Seat; 2. Fixed plate; 3. Movable plate; 4. Fixed unit 1; 5. Fixed unit 2; 6. Drive box; 7. Air pump; 8. Water tank; 9. Linkage rod; 10. Pressure regulating box; 11. Gear 1; 12. Gear 2; 13. Ratchet; 14. Ratchet; 15. Mounting plate; 16. Partition; 17. Rotating baffle; 18. Positioning baffle; 19. Piston 1; 20. Telescopic sleeve; 21. Rack; 22. Spring 1; 23. Baffle shaft; 24. Solenoid valve; 2 5. Sliding cover; 26. Friction disc one; 27. Friction disc two; 28. Piston three; 29. ​​Spring two; 30. Piston four; 31. Pressure foot plate; 32. Pressure limiting cylinder two; 33. Spring three; 34. Piston five; 35. Clamping arc plate one; 36. Clamping arc plate two; 37. Water bag one; 38. Water bag two; 39. Water outlet pipe; 40. Air pipe one; 41. Air pipe two; 42. Air pipe three; 43. Retaining ring; 44. Air pipe four; 45. Air pipe five; 46. Micro switch; 47. Spring four. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0016] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0017] Example 1, as Figures 1-9 As shown, the orthopedic auxiliary traction device of this embodiment includes a seat 1, a fixed plate 2 symmetrically fixed on both sides of the seat 1, and a movable plate 3 rotatably arranged on the fixed plate 2, and also includes a fixing unit 4 fixed on the inner side of the fixed plate 2, a water tank 8 fixed on the fixed plate 2, a pressure regulating box 10 fixed on the fixed plate 2, a drive box 6 fixed on the outer side of the fixed plate 2, and an air pump 7 fixed on the outer side of the fixed plate 2. A baffle shaft 23 is rotatably provided in the drive box 6, and a rotating baffle 17 is fixed on the circumferential surface of the baffle shaft 23. One end of the baffle shaft 23 A sliding cover 25 is provided for sliding, and a partition 16 is fixedly provided in the drive box 6. The function of the partition 16 is to limit the upward rotation angle of the rotating baffle 17, and it also plays a sealing role. A limit baffle 18 is fixed in the drive box 6. The function of the limit baffle 18 is to limit the downward movement angle of the rotating baffle 17. The baffle shaft 23 is hollow, and an air pipe four 44 is opened on the sliding cover 25. The air pipe four 44 is connected to the outside. An electromagnetic valve 24 is fixed on the baffle shaft 23. When the electromagnetic valve 24 is opened, the inside of the drive box 6 can be connected with the outside of the drive box 6 through the air pipe four 44.

[0018] Among them, the air outlet of the air pump 7 is connected to the drive box 6 via an air pipe 40, and the drive box 6 is connected to the bottom of the pressure regulating box 10 via an air pipe 2 41. A piston 3 28 is slidingly provided in the pressure regulating box 10, and a linkage rod 9 is slidingly provided on the piston 3 28. A piston 19 is slidingly provided in the water tank 8, and the other end of the linkage rod 9 is fixedly connected to the piston 19. The function of the linkage rod 9 is to drive the piston 3 28 to move downward via the linkage rod 9 when the piston 19 moves downward. A spring 22 is fixedly provided at the bottom of the piston 19, and the other end of the spring 22 is fixedly connected to the bottom wall of the water tank 8. The function of the spring 22 is to push the piston 19 to move upward to squeeze the water at the top of the water tank 8.

[0019] Among them, a mounting plate 15 is fixed on the fixing plate 2, and a ratchet 14 is rotatably provided on the mounting plate 15. A gear 11 is coaxially fixed on one side of the ratchet 14, and a gear 2 12 is rotatably provided on the mounting plate 15. Gear 1 11 is meshed with gear 2 12. A rack 21 is fixed on one side of the piston 3 28, and gear 2 12 is meshed with the rack 21. A pawl 13 is rotatably provided on the mounting plate 15, and the pawl 13 corresponds to the ratchet 14. The function of the ratchet 14 is to make the piston 3 28 move only downward.

[0020] Among them, a spring four 47 is fixed on the sliding cover 25, and the other end of the spring four 47 is fixedly connected to the baffle shaft 23. A friction disc 1 26 is fixed on the sliding cover 25, and a friction disc 2 27 is fixed on one side of the gear 11. The friction disc 1 26 is in pressure contact with the friction disc 2 27 to achieve intermittent transmission. Only when the solenoid valve 24 is opened, under the action of the airflow, the sliding cover 25 slides toward the gear 1 11, and the friction disc 1 26 and the friction disc 2 27 fit tightly together. The friction disc 1 26 can drive the friction disc 2 27 to rotate. When the solenoid valve 24 is closed, the sliding cover 25 is reset under the action of the spring four 47, and the friction disc 1 26 and the friction disc 2 27 are no longer in close contact. This can avoid friction damage to the friction disc 1 26 and the friction disc 2 27 when the patient's legs move upward.

[0021] Among them, a piston four 30 is slidingly provided in the pressure regulating box 10, and a retaining ring 43 is fixed in the pressure regulating box 10. The retaining ring 43 serves as a limit for the piston four 30. A spring two 29 is fixed on the piston four 30, and the other end of the spring two 29 is fixedly connected to the piston three 28. A micro switch 46 is fixed on the inner wall of the pressure regulating box 10 above the piston four 30. The micro switch 46 is electrically controlled and connected to the solenoid valve 24. When the air pressure in the drive box 6 rises to a level that can push the piston four 30 to move, the piston four 30 contacts the micro switch 46 and the solenoid valve 24 is opened. The function of the spring two 29 is to continuously increase the pressure required to push the piston four 30 upward through the continuous compression of the spring two 29. The gear two 12 and the air pipe two 41 are staggered to prevent the air pipe two 41 from blocking the downward movement of the rack 21. The downward movement of the piston one 19 drives the piston three 28 to move downward, which can increase the initial pressure required to push the piston four 30 upward.

[0022] Among them, the movable plate 3 is provided with a pressure foot plate 31 for sliding, a rubber pad is fixed on the pressure foot plate 31, a telescopic sleeve 20 is fixed on the movable plate 3, the movable end of the telescopic sleeve 20 is fixedly connected to the pressure foot plate 31, the side wall of the base end of the telescopic sleeve 20 is fixed with a pressure limiting cylinder 2 32, a piston 5 34 is sliding in the pressure limiting cylinder 2 32, a spring 33 is fixed on one side of the piston 5 34, the other end of the spring 33 is fixedly connected to the pressure limiting cylinder 2 32, and a trachea 5 is opened on the pressure limiting cylinder 2 32 45. The base of the telescopic sleeve 20 can be connected to the outside through the trachea five 45. The drive box 6 is connected to the base of the telescopic sleeve 20 via the trachea three 42. The piston five 34 blocks the airflow from flowing out through the trachea five 45. When the air pressure at the base of the telescopic sleeve 20 rises to a pressure that can push the piston five 34 to move, the airflow pushes the piston five 34 to move, and then the airflow can flow out through the trachea five 45, thereby preventing the pressure plate 31 from applying excessive pressure on the patient's foot, causing harm to the patient.

[0023] Among them, the fixed unit 4 includes a clamping arc plate 2 36 fixed on the inner side of the fixed plate 2, a clamping arc plate 1 35 rotatably arranged on the clamping arc plate 2 36, a water bag 1 37 fixed on the clamping arc plate 1 35, and a water bag 2 38 fixed on the clamping arc plate 2 36. A clip is fixed on the clamping arc plate 1 35, and the clip can fix the clamping arc plate 1 35 on the clamping arc plate 2 36. The water bag 1 37 and the water bag 2 38 are connected to the top of the water tank 8 via the water outlet pipe 39. A fixed unit 2 5 is fixed on the movable plate 3. The fixed unit 2 5 has the same structure and the same connection method as the fixed unit 1 4. The water bag 1 37 and the water bag 2 38 corresponding to the fixed unit 2 5 are connected to the top of the water tank 8 via the water outlet pipe 39.

[0024] When used specifically: let the patient sit on the chair 1, and place the leg that needs to be stretched between the clamping arc plate 1 35 and the clamping arc plate 2 36 of the fixing unit 1 4 and between the clamping arc plate 1 35 and the clamping arc plate 2 36 of the fixing unit 2 5. After fixing the clamping arc plate 1 35 and the clamping arc plate 2 36 of the fixing unit 1 4 and the clamping arc plate 1 35 and the clamping arc plate 2 36 of the fixing unit 2 5, the patient's legs squeeze the water bag 1 37 and the water bag 2 38 of the fixing unit 1 4 and the water bag 1 37 and the water bag 2 38 of the fixing unit 2 5. The water is squeezed into the water tank 8 through the water outlet pipe 39, pushing the piston 1 19 to move downward. The downward movement of the piston 19 drives the piston 3 28 to move downward via the linkage rod 9. The downward movement of the piston 19 squeezes the spring 2 29, and the patient The larger the leg circumference, the greater the distance that piston 19 moves downward, which increases the air pressure required to push piston 4 30 upward for the first time, and starts air pump 7. Air pump 7 enters drive box 6 through trachea 40, and the air pressure drives the rotating baffle 17 to rotate. The rotating baffle 17 drives the baffle shaft 23 to rotate, and the baffle shaft 23 drives the movable plate 3 and then drives the patient's calf to rotate upward for the first time, pulling the patient's knee joint. After the patient's calf moves upward at a small angle, the air pressure in drive box 6 increases to the point where piston 4 30 can be pushed upward for the first time. Piston 4 30 triggers microswitch 46, which controls solenoid valve 24 to open. Airflow flows into the baffle shaft 23 through solenoid valve 24 and is blown out from trachea 44. The baffle shaft 23 is under the pressure of the patient's calf. The airflow from the air pipe 4 44 drives the sliding cover 25 to move toward the gear 11, and then drives the friction disc 1 26 to contact the friction disc 2 27. The baffle shaft 23 rotates and drives the friction disc 2 27 to rotate via the friction disc 1 26. The rotation of the friction disc 2 27 drives the gear 1 11 to rotate. The rotation of the gear 1 11 drives the rack 21 downward via the gear 2 12. The downward movement of the rack 21 drives the piston 3 28 downward. The downward movement of the piston 3 28 squeezes the spring 2 29 so that the air pressure required to push the piston 4 30 upward for the second time continues to increase. After the rotating baffle 17 is reset, the solenoid valve 24 is closed, and the air pressure in the drive box 6 begins to increase, and the first process is repeated. The difference is that the angle of the patient's calf moving upward the second time is larger than the first time, and the process is repeated continuously to gradually increase the traction angle of the patient's knee joint until the rotating baffle 17 can be rotated to a horizontal position. After the rotating baffle 17 is rotated to a horizontal position, the gas in the driving box 6 flows into the base of the telescopic sleeve 20 through the air pipe 3 42, and the movable end of the telescopic sleeve 20 extends, driving the pressure foot plate 31 to move toward the direction of the seat 1. The pressure foot plate 31 can squeeze the patient's arch, further stretch the ligament of the knee joint, and improve the traction effect. After the traction is completed, the air pump 7 is turned off, and the pawl 13 is rotated so that it no longer restricts the rotation of the ratchet 14, and then the ratchet 14 no longer restricts the upward movement of the rack 21. At this time, the spring 29 pushes the piston 3 28 to move upward.At the same time, spring 1 22 pushes piston 19 upward, completing the reset of piston 3 28 and piston 19, making it easier for the next use.

[0025] In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to this technical solution without creatively designing them without departing from the purpose of the invention, they should all fall within the scope of protection of the invention.

Claims

1. An orthopedic auxiliary traction device, comprising a seat (1), fixed plates (2) symmetrically fixed on both sides of the seat (1), and a movable plate (3) rotatably arranged on the fixed plates (2), characterized in that: The invention also includes a fixing unit 1 (4) fixed on the inner side of the fixing plate (2), a water tank (8) fixed on the fixing plate (2), a pressure regulating box (10) fixed on the fixing plate (2), a driving box (6) fixed on the outer side of the fixing plate (2), a pressure plate (31) slidably arranged on the movable plate (3), and an air pump (7) slidably arranged on and fixedly arranged on the outer side of the fixing plate (2), wherein a baffle shaft (23) is rotatably arranged in the driving box (6), the air pump (7) is connected to the driving box (6) via a pipeline, a piston 1 (19) is slidably arranged in the water tank (8), a piston 3 (28) is slidably arranged in the pressure regulating box (10), the piston 1 (19) is connected to the piston 3 (28) in a transmission manner, the baffle shaft (23) is intermittently connected to the piston 3 (28), the air pump (7) is connected to the baffle shaft (23) via a pipeline transmission, and the air pump (7) is connected to the pressure plate (31) via a pipeline transmission.

2. The orthopedic auxiliary traction device according to claim 1, characterized in that: A rotating baffle (17) is fixedly provided on the circumferential surface of the baffle rotating shaft (23), a sliding cover (25) is slidably provided on one end of the baffle rotating shaft (23), the baffle rotating shaft (23) is hollow, and an air pipe (44) is provided on the sliding cover (25), and the interior of the driving box (6) can be connected to the exterior of the driving box (6) via the air pipe (44).

3. The orthopedic auxiliary traction device according to claim 2, characterized in that: A linkage rod (9) is fixedly provided on the piston one (19), and the other end of the linkage rod (9) is slidably connected to the piston three (28). A piston four (30) is slidably provided in the pressure regulating box (10), and the driving box (6) is connected to the bottom pipe of the pressure regulating box (10).

4. The orthopedic auxiliary traction device according to claim 3, characterized in that: A telescopic sleeve (20) is fixedly provided on the movable plate (3), and the movable end of the telescopic sleeve (20) is fixedly connected to the pressure foot plate (31). A pressure limiting cylinder 2 (32) is fixedly provided on the side wall of the base of the telescopic sleeve (20), and a piston 5 (34) is slidably provided in the pressure limiting cylinder 2 (32). An air pipe 5 (45) is provided on the pressure limiting cylinder 2 (32). The base of the telescopic sleeve (20) can be connected to the outside through the air pipe 5 (45), and the drive box (6) is connected to the base of the telescopic sleeve (20) by pipeline transmission.

5. The orthopedic auxiliary traction device according to claim 4, characterized in that: The fixing unit 1 (4) includes a clamping arc plate 2 (36) fixedly arranged on the inner side of the fixing plate (2), a clamping arc plate 1 (35) rotatably arranged on the clamping arc plate 2 (36), a water bag 1 (37) fixedly arranged on the clamping arc plate 1 (35), and a water bag 2 (38) fixedly arranged on the clamping arc plate 2 (36), wherein the water bag 1 (37) is connected to the bottom pipe of the water tank (8), and the water bag 2 (38) is connected to the bottom pipe of the water tank (8).

6. The orthopedic auxiliary traction device according to claim 5, characterized in that: A partition plate (16) is fixedly provided in the drive box (6), and a position limiting baffle (18) is fixedly provided in the drive box (6).

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