Orthopedic traction device

Abstract

The present invention discloses an orthopedic traction device, which relates to the technical field of medical devices, including a pair of symmetrically arranged fixing mechanisms, an elbow plate is provided between the two fixing mechanisms, and an elbow pad is fixedly connected to the elbow plate; a traction mechanism is commonly connected below the fixing mechanisms; the present invention cooperates with the fixing mechanism, the clamping unit and the positioning unit to fit the contours of human limbs and can adjust the fixed position, thereby solving the problem of poor fit of traditional rigid clamping, reducing local compression and the risk of pressure sores, the traction mechanism is set to meet the needs of different treatment stages, balance stability and flexibility, and is convenient for storage in coordination with the fixing mechanism, the ventilation mechanism and the supplementary mechanism are closely coordinated, and cooperate with the ventilation design of the elbow plate and the elbow pad to form a multi-layer ventilation system, which effectively disperses limb contact pressure, promotes air convection, accelerates heat dissipation and perspiration, and improves the patient's comfort when wearing for a long time, the device structure is stable and adaptable, and the fixing mechanism is slidably connected to the traction mechanism.

Description

Technical Field

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

[0002] Orthopedic traction is a common treatment method that uses external force to pull the affected limb to restore the normal anatomical position of the bones, relieve muscle spasms and reduce pain.

[0003] The existing traction devices generally have the following problems:

[0004] 1. Poor flexibility of the fixation mechanism: Traditional fixation devices are mostly rigid snap-fit ​​structures, which are difficult to adapt to the differences in limb morphology of different patients. In actual use, local compression may be too tight, increasing the risk of pressure sores in patients; or the fixation may be loose, affecting the effect of traction treatment. This poor adaptability problem limits the effective application of the device in different patient groups.

[0005] 2. Insufficient breathability and comfort: During long-term traction, the contact area between the affected limb and the device is prone to sweat accumulation due to poor air circulation, which in turn causes skin inflammation. In addition, existing devices generally lack pressure buffering design and cannot effectively disperse limb pressure. Patients experience poor comfort during use, which affects treatment compliance.

[0006] 3. Inconvenient traction adjustment: The traction direction of existing devices is mostly fixed as a straight line, and it is difficult to flexibly adjust the angle according to the patient's specific treatment needs. At the same time, the gravity loading method is single, and it is difficult for doctors to accurately control the traction force, which is not conducive to personalized and precise treatment, and may affect fracture reduction and rehabilitation effects.

[0007] 4. Conflict between structural stability and adaptability: Some devices use complex rigid connections to ensure stability. Although this enhances stability to a certain extent, it leads to poor overall flexibility. During the patient's rehabilitation process, when the affected limb needs to be repositioned, this type of device is difficult to cooperate with, hindering the rehabilitation process.

[0008] 5. Difficulties in storage: Some traction devices are large in size and take up a lot of space when not in use, making them extremely inconvenient to store. This not only causes trouble for storage management in medical institutions, but is also not conducive to patients' use and storage at home.

[0009] Therefore, the applicant proposes an orthopedic traction device to solve the above problems. Summary of the Invention

[0010] The purpose of the present invention is to provide an orthopedic traction device that solves the problems of poor flexibility of the fixing mechanism of the existing traction device, insufficient breathability and comfort, inconvenient traction adjustment, contradiction between structural stability and adaptability, and difficulty in storage.

[0011] The present invention solves the above technical problems through the following technical solutions: the present invention comprises a pair of symmetrically arranged fixing mechanisms, an elbow pad is provided between the two fixing mechanisms, and an elbow pad is fixedly connected to the elbow pad; a traction mechanism is commonly connected below the fixing mechanisms, and a positioning unit and a positioning unit that cooperate with each other are respectively provided on the fixing mechanisms, a ventilation mechanism is integrated inside the fixing mechanism, and a supplementary mechanism is nested inside the ventilation mechanism; the traction mechanism comprises a connected flipping assembly, a positioning assembly and a traction assembly, the flipping assembly is slidably connected to one of the fixing mechanisms, the positioning assembly is slidably connected to the other fixing mechanism, and the traction assembly is fixedly connected to the flipping assembly; the The flipping assembly includes a first limiting unit slidably connected to the fixing mechanism, the bottom end of the first limiting unit is fixedly connected to an outer cylinder, an inner rod is inserted in the outer cylinder, a curved spring is arranged between the outer cylinder and the inner rod, the inner rod is rotatably connected to the insertion cylinder through a universal ball, and the outer side of the insertion cylinder is fixedly connected to a guide unit slidably connected to the fixing mechanism; the positioning assembly includes a second limiting unit slidably connected to the fixing mechanism, the second limiting unit is fixedly connected to an external support base, and the other end of the external support base is fixedly connected to a socket rod inserted in the insertion cylinder; the traction assembly includes an L-shaped support rod fixedly connected to the outer cylinder, and a plurality of annular gravity disks are detachably connected to the L-shaped support rod.

[0012] Preferably, the fixing mechanism includes a U-shaped card plate, a convex slide groove is fixedly connected to the bottom of the U-shaped card plate, and a group of first oblique card grooves are opened on both side walls of the convex slide groove. The first oblique card grooves are slidably matched with the first limiting unit, the second limiting unit and the guide unit, and the outer side wall of the U-shaped card plate is opened with a first process groove.

[0013] Preferably, the first limit unit and the second limit unit both include a first convex slider slidably connected to the first oblique groove, the top of the first convex slider is fixedly connected to a symmetrically arranged bent plate, the bent plate is fixedly connected to a first oblique clip embedded in the first oblique groove, and a weakening groove is provided on the bent plate; the top of the first convex slider of the second limit unit is fixedly connected to the outer support base through a fixed column, and the first convex slider of the first limit unit is fixedly connected to the outer cylinder; the guide unit includes a second convex slider slidably connected to the first oblique groove, the top of the second convex slider is fixedly connected to a symmetrically arranged L-shaped plate, the L-shaped plate is in contact with the outer wall of the convex slide groove, and the fixing plate of the outer wall of the insert cylinder is screwed with a first bolt that interferes with the jack rod through a threaded hole.

[0014] Preferably, the universal ball includes a ball sleeve fixedly connected to the insert tube, and a ball head fixedly connected to the end of the inner rod and arranged in the ball sleeve, the inner wall of the external support base is in contact with the elbow plate, and a first air vent is provided on the top of the external support base; the inner rod includes a first bent rod, a first fixed plate and a second bent rod fixedly connected in sequence, the diameter of the second bent rod is smaller than that of the first bent rod, the first bent rod is fixedly connected to the ball sleeve, the outer tube includes a bent tube and a second fixed plate fixedly connected to the first convex slider, the second bent rod passes through the second fixed plate and is inserted into the bent tube, and the curved spring is fixedly connected between the first fixed plate and the second fixed plate.

[0015] Preferably, the positioning unit includes an arc-shaped card plate fixedly connected to the end of the U-shaped card plate, the arc-shaped card plate fits in the outer wall of the U-shaped card plate, and a group of second oblique card grooves are opened on the outer wall of the arc-shaped card plate; the positioning unit includes a U-shaped positioning plate fixedly connected to the outer wall of the U-shaped card plate, the U-shaped positioning plate is fixedly connected to a second oblique card strip embedded in the second oblique card groove, the top of the second oblique card strip is fixedly connected to a U-shaped pull plate, and the two side walls of the U-shaped positioning plate are curved elastic structures.

[0016] Preferably, the ventilation mechanism includes a U-shaped sleeve fixedly connected to the U-shaped card plate, a second process groove is provided on the U-shaped sleeve, a U-shaped hole is provided in the second process groove, a plurality of first convex strips distributed in a circular row are fixedly connected to the first convex strip, a group of first notches is provided on the first convex strip, a plurality of second weakened sections are provided on the U-shaped sleeve, and a group of first through holes provided on the U-shaped sleeve are provided between adjacent first convex strips.

[0017] Preferably, the supplementary mechanism includes a supplementary U-shaped plate fixedly connected to the inner wall of the U-shaped hole, the inner wall of the supplementary U-shaped plate is fixedly connected with S-shaped strips distributed in a circumferential array, and the other end of the S-shaped strip is in conflict with the inner wall of the U-shaped hole; the supplementary U-shaped plate is provided with a plurality of third process grooves, and the outer wall of the supplementary U-shaped plate is provided with a third weakened section, the S-shaped strip is made of elastic material, and the U-shaped sleeve is made of rubber material.

[0018] Preferably, the external supporting base is a circular rigid structure, the elbow drag plate is made of rubber, and a second air vent connected to the first air vent is provided on the top of the elbow drag plate.

[0019] Preferably, the elbow pad is fixedly connected to the inner wall of the elbow pad board, and the inner wall of the elbow pad is fixedly connected with second convex strips distributed in a circular array, a group of second through holes opened on the elbow pad are opened between adjacent second convex strips, and a second notch is opened on the second convex strip.

[0020] Compared with the prior art, the beneficial effects of the present invention are: the present invention is arranged in coordination with a fixing mechanism, a clamping unit and a positioning unit, wherein the U-shaped clamping plate makes it fit the contour of the human limbs, and the fixing position can be adjusted according to the thickness of the limbs. The self-locking structure composed of the arc clamping plate, the U-shaped positioning plate, the second oblique clamping groove and the second oblique clamping strip can flexibly adjust the embracing radius to adapt to different limb circumferences. This design solves the problem of poor adaptability of traditional rigid clamping structures, reduces local compression, and reduces the risk of pressure sores.

[0021] Through the cooperation of the flipping component, positioning component and traction component of the traction mechanism, the flipping component can flexibly adjust the traction angle through the universal ball, and the curved spring plays a buffering and protective role; the positioning component can accurately adjust the traction distance between the U-shaped pallets; the traction component accurately controls the traction force by increasing or decreasing the annular gravity disk. The components work together to meet the diverse needs of traction direction and force in different treatment stages, balance the stability and flexibility of the device, make the treatment more scientific and effective, and cooperate with the fixing mechanism for convenient storage.

[0022] Through the close cooperation between the ventilation mechanism and the supplementary mechanism, the first through hole, the first convex strip, the first notch of the U-shaped ferrule and the S-shaped strip of the supplementary U-shaped plate form a three-dimensional ventilation channel. The elbow pad and the elbow pad are made of rubber. The ventilation holes, convex strips and through holes are designed to work together with the ventilation mechanism and the supplementary mechanism to form a multi-layer ventilation system. These structures effectively disperse the contact pressure of the limbs, promote air convection, accelerate heat dissipation and perspiration, and greatly improve the comfort of patients wearing them for a long time.

[0023] The device has good adaptability while ensuring structural stability. The sliding connection design between the fixing mechanism and the traction mechanism, as well as the precise coordination between the components, enable the device to remain stable during the traction process and to flexibly adjust according to the position of the affected limb during the rehabilitation process. When the patient undergoes rehabilitation training, the flipping component can adjust the traction direction in real time following the limb movement, and the positioning component ensures that the spacing between the U-shaped pallets is appropriate, ensuring the smooth progress of the treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram of a second perspective stereoscopic structure;

[0026] Figure 3 for Figure 2 A in the middle is an enlarged schematic diagram of the three-dimensional structure;

[0027] Figure 4 for Figure 2 The enlarged three-dimensional structure diagram at B in the middle;

[0028] Figure 5 for Figure 1 A schematic diagram of a partially cutaway three-dimensional structure;

[0029] Figure 6 for Figure 5 The enlarged three-dimensional structure diagram at C in the middle;

[0030] Figure 7 It is a schematic diagram of the three-dimensional structure of the fixing mechanism, the locking unit, the positioning unit and the toggle plate;

[0031] Figure 8 It is an enlarged three-dimensional structural diagram of the ventilation mechanism and the supplementary mechanism;

[0032] Figure 9 It is an enlarged three-dimensional structural diagram of the ventilation mechanism;

[0033] Figure 10 It is an enlarged three-dimensional structural diagram of the supplementary mechanism;

[0034] Figure 11 It is an enlarged three-dimensional structural diagram of the traction mechanism;

[0035] Figure 12 for Figure 11 Schematic diagram of the second perspective three-dimensional structure.

[0036] The numbers in the figure represent:

[0037] 1. Fixing mechanism; 11. U-shaped clamping plate; 12. First process groove; 13. Convex slide; 14. First oblique clamping groove; 2. Clamping unit; 21. Arc clamping plate; 22. Second oblique clamping groove; 3. Positioning unit; 31. U-shaped positioning plate; 32. Second oblique clamping strip; 33. U-shaped pull plate; 4. Breathing mechanism; 41. U-shaped clamping sleeve; 42. Second process groove; 43. First convex strip; 44. First notch; 45. Second weakened section; 46. First through hole; 47. U-shaped hole; 5. Supplementing mechanism; 51. Supplementing U-shaped plate; 52. S-shaped strip; 53. Third process groove; 54. Third weakened section; 6. Elbow plate; 7. Elbow pad; 8. Traction mechanism; 81. First limiting unit; 82. Outer cylinder; 83. Inner insert rod; 85. Curved spring; 86. L-shaped support rod; 87. Annular gravity disk; 88. Universal ball; 89. Guide unit; 810. Second limiting unit; 811. External support base; 812. Insert cylinder; 813. First air vent; 814. Insert rod; 815. First oblique clamping strip; 816. First bolt. DETAILED DESCRIPTION

[0038] The above and other technical features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.

[0039] This embodiment provides a technical solution: an orthopedic traction device, such as Figure 1-12 As shown, it includes a pair of symmetrically arranged fixing mechanisms 1, with an elbow pad 6 provided between the two fixing mechanisms 1, and an elbow pad 7 fixedly connected to the elbow pad 6; a traction mechanism 8 is commonly connected below the fixing mechanisms 1, and the fixing mechanisms 1 are respectively provided with a locking unit 2 and a positioning unit 3 that cooperate with each other, a ventilation mechanism 4 is integrated inside the fixing mechanism 1, and an additional mechanism 5 is nested inside the ventilation mechanism 4.

[0040] like Figure 2 As shown, the fixing mechanism 1 includes a U-shaped card plate 11, a convex slide 13 is fixedly connected to the bottom of the U-shaped card plate 11, a group of first oblique card grooves 14 are opened on both side walls of the convex slide 13, and a first process groove 12 is opened on the outer side wall of the U-shaped card plate 11.

[0041] The core component of the fixing mechanism 1 is the U-shaped card plate 11, whose design fully considers the principles of ergonomics. It can fit closely to the contours of human limbs and provide a stable attachment basis for the entire device. The convex slide groove 13 at the bottom of the U-shaped card plate 11 and the first oblique slots 14 on both side walls are key structures for realizing flexible adjustment of the traction mechanism 8. The convex slide groove 13 provides a precise sliding track for the traction mechanism 8, ensuring its stable sliding in the axial direction of the limb and effectively avoiding lateral deviation; the first oblique slot 14 is precisely matched with the traction mechanism 8, making the traction mechanism 8 smoother and more precise when adjusting the position and angle. In addition, the first process groove 12 on the outer wall of the U-shaped card plate 11 adopts a hollow design, which not only reduces the overall weight of the device, but also enhances the flexibility of wearing, making patients more comfortable and convenient during use.

[0042] like Figures 2 to 5 、 Figure 11 and Figure 12As shown, the traction mechanism 8 includes a flipping assembly, a positioning assembly and a traction assembly connected to each other. The flipping assembly is slidably connected to one of the fixing mechanisms 1, the positioning assembly is slidably connected to the other fixing mechanism 1, and the traction assembly is fixedly connected to the flipping assembly; the flipping assembly includes a first limiting unit 81 slidably connected to the fixing mechanism 1, the bottom end of the first limiting unit 81 is fixedly connected to an outer cylinder 82, an inner plug rod 83 is inserted into the outer cylinder 82, a curved spring 85 is sleeved between the outer cylinder 82 and the inner plug rod 83, the inner plug rod 83 is rotatably connected to the plug cylinder 812 through a universal ball 88, and the outer side of the plug cylinder 812 is fixedly connected to a guide unit 89 slidably connected to the fixing mechanism 1; the positioning assembly includes a first limiting unit 81 slidably connected to the fixing mechanism 1, the bottom end of the first limiting unit 81 is fixedly connected to an outer cylinder 82, an inner plug rod 83 is inserted into the outer cylinder 82, a curved spring 85 is sleeved between the outer cylinder 82 and the inner plug rod 83, the inner plug rod 83 is rotatably connected to the plug cylinder 812 through a universal ball 88, and a guide unit 89 slidably connected to the fixing mechanism 1 is fixedly connected to the outer side of the plug cylinder 812; The second limiting unit 810 on the fixing mechanism 1 is fixedly connected to an external support base 811, and the other end of the external support base 811 is fixedly connected to a socket rod 814 inserted into the insert tube 812. The traction assembly includes an L-shaped support rod 86 fixedly connected to the outer tube 82, and a plurality of annular gravity disks 87 are detachably connected to the L-shaped support rod 86. The first oblique slot 14 slides with the first limiting unit 81, the second limiting unit 810 and the guide unit 89. The second bolts on the ball sleeve and the bent pipe can respectively contact the ball head and the second bent rod to further fix the angle. After adjusting to the appropriate traction angle, tighten the second bolt to prevent the angle from changing accidentally during the traction process.

[0043] The first limiting unit 81 and the second limiting unit 810 both include a first convex slider that is slidably connected to the first oblique slot 14, and the top of the first convex slider is fixedly connected to a symmetrically arranged bent plate, and the bent plate is fixedly connected to a first oblique clip 815 embedded in the first oblique slot 14, and a weakening groove is provided on the bent plate; the top of the first convex slider of the second limiting unit 810 is fixedly connected to the outer support base 811 through a fixed column, and the first convex slider of the first limiting unit 81 is fixedly connected to the outer cylinder 82; the guide unit 89 includes a second convex slider that is slidably connected to the first oblique slot 14, and the top of the second convex slider is fixedly connected to a symmetrically arranged L-shaped plate, and the L-shaped plate is in contact with the outer wall of the convex slide groove 13, and the first bolt 816 that conflicts with the socket rod 814 is screwed on the fixed plate on the outer wall of the insert cylinder 812 through a threaded hole.

[0044] The universal ball 88 includes a ball sleeve fixedly connected to the insert tube 812, and a ball head fixedly connected to the end of the inner plug rod 83 and arranged in the ball sleeve. The inner wall of the outer support base 811 fits with the elbow plate 6, and a first air vent 813 is provided on the top of the outer support base 811; the inner plug rod 83 includes a first bent rod, a first fixed plate and a second bent rod fixedly connected in sequence, the second bent rod has a smaller diameter than the first bent rod, and the first bent rod is fixedly connected to the ball sleeve. The outer cylinder 82 includes a bent pipe and a second fixed plate fixedly connected to the first convex slider, the second bent rod passes through the second fixed plate and is inserted into the bent pipe, and the curved spring 85 is fixedly connected between the first fixed plate and the second fixed plate. The outer support base 811 is a circular rigid structure. The ball sleeve and the bent pipe are both screwed with a second bolt through a threaded hole. One end of the second bolt on the ball sleeve conflicts with the ball head, and one end of the second bolt on the bent pipe conflicts with the second bent rod. Figure 2 shown.

[0045] The flip assembly is mainly composed of a first limiting unit 81, an outer cylinder 82, an inner rod 83, a curved spring 85, a universal ball 88 and a guide unit 89. The first limiting unit 81 slides in the first oblique slot 14 of the fixing mechanism 1, so that the entire flip assembly can move smoothly along the fixing mechanism 1. The curved spring 85 set between the outer cylinder 82 and the inner rod 83 plays a key role in buffering protection. During traction, when the limb is suddenly stressed, the spring 85 can effectively relieve the pulling force to prevent secondary damage to the injured limb. The inner rod 83 is rotatably connected to the insertion cylinder 812 through the universal ball 88, and the universal ball 88 is fixed. The device is composed of a ball sleeve fixed on the insert tube 812 and a ball head fixed on the end of the inner rod 83 and located in the ball sleeve. This structure allows the inner rod 83 to rotate freely in multiple directions. The doctor can flexibly adjust the traction angle according to the specific circumstances of the patient's injury, such as the location and angle of the fracture. During the rehabilitation training stage, when the patient's limbs move, the flip component can adjust the traction direction in real time following the limb movement. For example, when the patient performs simple joint flexion and extension activities, the flip component can ensure the traction effect without hindering the patient's rehabilitation training movements, so that the patient can perform appropriate rehabilitation training in the traction state to promote recovery.

[0046] The positioning assembly includes a second limiting unit 810, an outer supporting base 811, a socket rod 814 and a first bolt 816. The second limiting unit 810 also slides in the first oblique slot 14 of the fixing mechanism 1. Its top is fixedly connected to the outer supporting base 811 through a fixing column. The outer supporting base 811 mainly plays the role of supporting the toggle plate 6. Its inner wall fits with the toggle plate 6 and can provide stable support for the toggle plate 6. The socket rod 814 fixedly connected at the other end of the outer supporting base 811 is inserted into the insert tube 812. The first bolt 816 on the fixing plate on the outer wall of the insert tube 812 is screwed through the threaded hole and contacts the socket rod 814. When it is necessary to adjust the distance between a pair of U-shaped card plates 11, When the distance is adjusted, first slide the second limiting unit 810, which will drive the outer support base 811 to move, and then adjust the position of the elbow plate 6. At this time, the jack rod 814 will move in the insert tube 812. After adjusting to the appropriate position, tighten the first bolt 816 to make it tightly against the jack rod 814, and firmly lock the outer support base 811 and the insert tube 812 together. In this way, the elbow plate 6 is stretched with the cooperation of the flip assembly, thereby adjusting the distance between the U-shaped clamping plates 11. For example, when treating limb fractures of different lengths, the spacing of the U-shaped clamping plates 11 can be adjusted according to actual conditions to ensure that the traction force is evenly distributed on the injured limb, thereby improving the treatment effect.

[0047] The traction assembly is mainly composed of an L-shaped strut 86 and an annular gravity plate 87. The L-shaped strut 86 is fixedly connected to the outer cylinder 82, and the annular gravity plate 87 is detachably mounted on the L-shaped strut 86. The doctor can accurately control the traction force by increasing or decreasing the number of annular gravity plates 87 according to the patient's weight, the severity of the fracture and the different stages of treatment. For patients with more serious fractures who require greater traction force for reduction and fixation, the number of annular gravity plates 87 can be increased; for patients with lighter fractures or in the late stages of rehabilitation who need to gradually reduce the traction force, the number of annular gravity plates 87 can be reduced accordingly. For example, in the early stages of treatment, in order to overcome the muscle contraction force and reduce the fracture end as soon as possible, it may be necessary to mount more gravity plates; as the fracture gradually heals, in order to avoid damage to the bones and surrounding tissues caused by excessive traction, the number of gravity plates can be gradually reduced. This method of accurately controlling the traction force can make the treatment more scientific and safe, and help improve the quality of patient recovery.

[0048] The flip assembly and the positioning assembly are separated and fixed respectively under the U-shaped card plate 11. The elbow pad 7 and the elbow plate 6 can be bent, so that the U-shaped card plates 11 are close to each other. As a result, it does not take up a lot of space when not in use, and storage is extremely convenient. It not only provides convenience for storage management of medical institutions, but also facilitates patients to use and store at home.

[0049] In actual use, the three components work together. First, according to the patient's injury, the traction angle is adjusted by flipping the component and fixed with the second bolt on the ball sleeve and the elbow; then, the positioning component is used to slide the second limit unit 810 to adjust the position of the elbow plate 6, and then determine the appropriate distance between the U-shaped clamping plates 11, and lock it with the first bolt 816; finally, according to the treatment requirements, the number of annular gravity plates 87 is increased or decreased through the traction component to accurately set the traction force. During the entire treatment process, if the patient's condition changes, the three components can be adjusted accordingly at any time to ensure that the traction treatment always achieves the best effect.

[0050] like Figure 3 As shown, the positioning unit 2 includes an arc-shaped card plate 21 fixedly connected to the end of the U-shaped card plate 11, the arc-shaped card plate 21 is in contact with the outer wall of the U-shaped card plate 11, and a group of second oblique card grooves 22 are opened on the outer wall of the arc-shaped card plate 21; the positioning unit 3 includes a U-shaped positioning plate 31 fixedly connected to the outer wall of the U-shaped card plate 11, and the U-shaped positioning plate 31 is fixedly connected to a second oblique card strip 32 embedded in the second oblique card groove 22, and the top of the second oblique card strip 32 is fixedly connected to a U-shaped pull plate 33, and the two side walls of the U-shaped positioning plate 31 are curved elastic structures.

[0051] The arc-shaped card plate 21 of the positioning unit 2 is fixed to the end of the U-shaped card plate 11 and cooperates with the U-shaped positioning plate 31 of the positioning unit 3. The second oblique card strip 32 on the U-shaped positioning plate 31 is embedded in the second oblique card groove 22 on the outer wall of the arc-shaped card plate 21 to form a reliable self-locking structure. When it is necessary to adapt to different limb circumferences, the U-shaped pull plate 33 is pulled, and the curved elastic structure of the two side walls of the U-shaped positioning plate 31 is deformed, so that the second oblique card strip 32 is disengaged from the second oblique card groove 22, and the arc-shaped card plate 21 can slide along the U-shaped card plate 11 to adjust its position. After releasing the U-shaped pull plate 33, it is automatically locked again. This design effectively solves the problem of poor adaptability of traditional rigid card structures, can flexibly adapt to the differences in limb morphology of different patients, reduce local compression, and reduce the risk of pressure sores.

[0052] like Figure 1 、 Figures 8 to 10 As shown, the ventilation mechanism 4 includes a U-shaped sleeve 41 fixedly connected to the U-shaped card plate 11, a second process groove 42 is provided on the U-shaped sleeve 41, a U-shaped hole 47 is provided in the second process groove 42, a plurality of first convex strips 43 distributed in a circular row are fixedly connected in the first convex strip 43, a group of first notches 44 are provided on the first convex strip 43, a plurality of second weakened sections 45 are provided on the U-shaped sleeve 41, and a group of first through holes 46 provided on the U-shaped sleeve 41 are provided between adjacent first convex strips 43.

[0053] The supplementary mechanism 5 includes a supplementary U-shaped plate 51 fixedly connected to the inner wall of the U-shaped hole 47, and the inner wall of the supplementary U-shaped plate 51 is fixedly connected with S-shaped strips 52 distributed in a circumferential array, and the other end of the S-shaped strip 52 is in conflict with the inner wall of the U-shaped hole 47; the supplementary U-shaped plate 51 is provided with a plurality of third process grooves 53, and the outer wall of the supplementary U-shaped plate 51 is provided with a third weakened section 54, the S-shaped strip 52 is made of elastic material, and the U-shaped sleeve 41 is made of rubber material.

[0054] The U-shaped card sleeve 41 of the ventilation mechanism 4 is fixed in the U-shaped card plate 11, and the second process groove 42, the U-shaped hole 47, the first convex strip 43 and the first notch 44 distributed in a circumferential array, and the first through hole 46 thereon together constitute a preliminary ventilation structure. The first convex strip 43 and the first notch 44 divide the contact area into multiple independent areas, and cooperate with the first through hole 46 to form a certain ventilation channel. The supplementary U-shaped plate 51 of the supplementary mechanism 5 is fixed on the inner wall of the U-shaped hole 47, and the S-shaped strips 52 distributed in a circumferential array are made of elastic material. After the S-shaped strips 52 are embedded in the U-shaped hole 47, they cooperate with the structure of the U-shaped card sleeve 41 to further optimize the ventilation effect. When the patient's limbs move, the S-shaped strips 52 undergo reciprocating deformation, promote air convection, and accelerate heat dissipation and perspiration at the contact part. The rubber material of the U-shaped card sleeve 41 is flexible, and works together with the convex strip structure to effectively disperse the contact pressure of the limbs, making the patient more comfortable during long-term wearing.

[0055] The elbow drag plate 6 is made of rubber, and a second air vent connected to the first air vent 813 is provided on the top of the elbow drag plate 6. The elbow drag pad 7 is fixedly connected to the inner wall of the elbow drag plate 6. The inner wall of the elbow drag pad 7 is fixedly connected with second convex strips distributed in a circular array. A group of second through holes are provided on the elbow drag pad 7 between adjacent second convex strips, and a second notch is provided on the second convex strip.

[0056] The elbow drag plate 6 is made of rubber material, and the second air vent opened on the top is connected to the first air vent 813 of the external support base 811, forming a vertical air vent path, which enhances air circulation. The elbow drag pad 7 is fixed on the inner wall of the elbow drag plate 6, and the second convex strips and the second through holes distributed in a circular array on the inner wall, as well as the second notch on the second convex strip, further reduce the contact area between the limb and the elbow drag pad 7 and disperse the pressure. These designs of the elbow drag plate 6 and the elbow drag pad 7 work together with the ventilation mechanism 4 and the supplementary mechanism 5 to form a multi-layer ventilation system, which can more effectively dissipate sweat and heat and reduce sweat accumulation. Combined with the elastic buffering properties of the rubber material, it greatly improves the comfort of patients wearing it for a long time.

[0057] The above are only preferred embodiments of the present invention and are merely illustrative, not restrictive, of the present invention. Those skilled in the art will appreciate that many changes, modifications, and even equivalents may be made to the embodiments within the spirit and scope of the claims, all of which fall within the scope of protection of the present invention.

Claims

1. An orthopedic traction device, characterized in that: It comprises a pair of symmetrically arranged fixing mechanisms, an elbow pad is provided between the two fixing mechanisms, and an elbow pad is fixedly connected to the elbow pad. The fixing mechanism is connected to a traction mechanism below, and the fixing mechanism is provided with a locking unit and a positioning unit that cooperate with each other. A ventilation mechanism is integrated inside the fixing mechanism, and a supplementary mechanism is nested inside the ventilation mechanism to optimize the ventilation performance of the ventilation mechanism, enhance pressure dispersion, and improve wearing comfort. The traction mechanism includes a flipping assembly, a positioning assembly and a traction assembly connected to each other, the flipping assembly is slidably connected to one of the fixing mechanisms, the positioning assembly is slidably connected to the other fixing mechanism, and the traction assembly is fixedly connected to the flipping assembly; The flip assembly includes a first limiting unit slidably connected to the fixing mechanism, the bottom end of the first limiting unit is fixedly connected to an outer cylinder, an inner rod is inserted into the outer cylinder, a curved spring is sleeved between the outer cylinder and the inner rod, the inner rod is rotatably connected to the insertion cylinder through a universal ball, and the outer side of the insertion cylinder is fixedly connected to a guide unit slidably connected to the fixing mechanism; The positioning assembly includes a second limiting unit slidably connected to the fixing mechanism, the second limiting unit is fixedly connected to an external support base, and the other end of the external support base is fixedly connected to a socket rod inserted into the insert; The traction assembly includes an L-shaped support rod fixedly connected to the outer cylinder, and a plurality of annular gravity plates are detachably connected to the L-shaped support rod.

2. The orthopedic traction device according to claim 1, wherein: The fixing mechanism includes a U-shaped card plate, a convex slide groove is fixedly connected to the bottom of the U-shaped card plate, and a group of first oblique card grooves are opened on both side walls of the convex slide groove. The first oblique card groove is slidably matched with the first limiting unit, the second limiting unit and the guide unit, and a first process groove is opened on the outer side wall of the U-shaped card plate.

3. The orthopedic traction device according to claim 2, characterized in that: The first limiting unit and the second limiting unit each include a first convex slider slidably connected to the first oblique slot, a symmetrically arranged bent plate fixedly connected to the top of the first convex slider, a first oblique clip embedded in the first oblique slot fixedly connected to the bent plate, and a weakening groove formed on the bent plate; The top of the first convex sliding block of the second limiting unit is fixedly connected to the outer supporting base through a fixing column, and the first convex sliding block of the first limiting unit is fixedly connected to the outer cylinder; The guide unit includes a second convex slider slidingly connected to the first oblique slot, and a symmetrically arranged L-shaped plate is fixedly connected to the top of the second convex slider. The L-shaped plate is fitted with the outer wall of the convex slot, and a first bolt that interferes with the socket rod is screwed through a threaded hole on the fixing plate on the outer wall of the insert.

4. The orthopedic traction device according to claim 3, wherein: The universal ball includes a ball sleeve fixedly connected to the insert tube, and a ball head fixedly connected to the end of the inner rod and arranged in the ball sleeve. The inner wall of the outer support base is in contact with the toggle plate, and a first air vent is opened on the top of the outer support base. The inner insert rod includes a first bent rod, a first fixed plate and a second bent rod fixedly connected in sequence, the diameter of the second bent rod is smaller than that of the first bent rod, the first bent rod is fixedly connected to the ball sleeve, the outer cylinder includes a bent tube and a second fixed plate fixedly connected to the first convex slider, the second bent rod passes through the second fixed plate and is inserted into the bent tube, and the curved spring is fixedly connected between the first fixed plate and the second fixed plate.

5. The orthopedic traction device according to claim 2, wherein: The clamping unit includes an arc-shaped clamping plate fixedly connected to the end of the U-shaped clamping plate, the arc-shaped clamping plate is in contact with the outer wall of the U-shaped clamping plate, and a group of second oblique clamping grooves are opened on the outer wall of the arc-shaped clamping plate; The positioning unit includes a U-shaped positioning plate fixedly connected to the outer wall of the U-shaped card plate, a second oblique card strip embedded in the second oblique card slot is fixedly connected to the U-shaped positioning plate, and a U-shaped pull plate is fixedly connected to the top of the second oblique card strip. The two side walls of the U-shaped positioning plate are curved elastic structures.

6. The orthopedic traction device according to claim 2, wherein: The ventilation mechanism includes a U-shaped ferrule fixedly connected to the U-shaped card plate, a second process groove is provided on the U-shaped ferrule, a U-shaped hole is provided in the second process groove, and a plurality of first convex strips distributed in a circular row are fixedly connected, a group of first notches are provided on the first convex strips, a plurality of second weakened sections are provided on the U-shaped ferrule, and a group of first through holes provided on the U-shaped ferrule are provided between adjacent first convex strips.

7. The orthopedic traction device according to claim 6, characterized in that: The supplementing mechanism includes a supplementing U-shaped plate fixedly connected to the inner side wall of the U-shaped hole, the inner side wall of the supplementing U-shaped plate is fixedly connected to S-shaped strips distributed in a circumferential array, and the other end of the S-shaped strip is in conflict with the inner side wall of the U-shaped hole; The supplementary U-shaped plate is provided with a plurality of third process grooves, the outer side wall of the supplementary U-shaped plate is provided with a third weakened section, the S-shaped strip is made of elastic material, and the U-shaped sleeve is made of rubber material.

8. The orthopedic traction device according to claim 4, wherein: The external supporting base is a circular rigid structure, the elbow drag plate is made of rubber, and a second air vent connected to the first air vent is provided on the top of the elbow drag plate.

9. The orthopedic traction device according to claim 8, wherein: The elbow pad is fixedly connected to the inner wall of the elbow pad board, and the inner wall of the elbow pad is fixedly connected with second convex strips distributed in a circular array. A group of second through holes are opened on the elbow pad between adjacent second convex strips, and a second notch is opened on the second convex strip.

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