Orthopedic traction device

Abstract

The invention discloses an orthopedic traction device, and relates to the technical field of medical instruments, the orthopedic traction device comprises a pair of symmetrically arranged fixing mechanisms, an elbow dragging plate is arranged between the two fixing mechanisms, and the elbow dragging plate is fixedly connected with an elbow dragging pad; the lower portions of the fixing mechanisms are jointly connected with a traction mechanism. Through the cooperation of the fixing mechanism, the clamping unit and the positioning unit, the device fits the contour of four limbs of a human body, can adjust the fixing position, solves the problem of poor adaptability of a conventional rigid clamp, reduces the local compression and pressure sore risks, is provided with the traction mechanism, meets the demands of different treatment stages, balances the stability and flexibility, is convenient to cooperate with the fixing mechanism for storage, and is convenient to use. The ventilation mechanism and the supplement mechanism are tightly matched and cooperate with the ventilation design of the elbow dragging plate and the elbow dragging pad to form a multi-layer ventilation system, the system effectively disperses limb contact pressure, promotes air convection, accelerates heat dissipation and perspiration and improves long-time wearing comfort of a patient, the device is stable in structure and good in adaptability, and the fixing mechanism is in sliding connection with the traction mechanism.

Description

Technical Field

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

[0002] Orthopedic traction is a common treatment method that pulls the affected limb by an external force to restore the normal anatomical position of the bone, relieve muscle spasm and reduce pain.

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

[0004] First, the fixing mechanism has poor flexibility: Most traditional fixing devices are rigid clamping structures, which are difficult to fit the limb shape differences of different patients. During actual use, local compression may be too tight, increasing the risk of pressure sores for patients; or the fixation may be insecure, affecting the traction treatment effect. This problem of poor adaptability limits the effective application of the device in different patient groups.

[0005] Second, the breathability and comfort are insufficient: During long-term traction, due to poor air circulation at the contact part between the affected limb and the device, sweat is likely to accumulate, which may further cause skin inflammation. Moreover, the existing devices generally lack a pressure buffering design and cannot effectively disperse the limb pressure, resulting in poor comfort for patients during use and affecting the compliance of treatment.

[0006] Third, the traction adjustment is inconvenient: The traction direction of the existing devices is mostly fixed in a straight line, making it difficult to flexibly adjust the angle according to the specific treatment needs of patients. 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 achieving personalized and precise treatment and may affect the fracture reduction and rehabilitation effect.

[0007] Fourth, there is a contradiction between the structural stability and adaptability: Some devices use complex rigid connections to ensure stability. Although the firmness is enhanced to a certain extent, the overall flexibility becomes poor. During the rehabilitation process of patients, when the affected limb needs to be adjusted in position, such devices are difficult to cooperate, hindering the rehabilitation process.

[0008] Fifth, there are difficulties in storage: Some traction devices are large in size and occupy a large amount of space when not in use, making storage extremely inconvenient. This not only brings trouble to the storage management of medical institutions but also is not conducive to patients using and storing 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, which solves the problems of poor flexibility of the fixing mechanism, insufficient breathability and comfort, inconvenient traction adjustment, contradiction between structural stability and adaptability, and difficulties in storage of the existing traction devices.

[0011] The present invention solves the above technical problems through the following technical solutions. The present invention includes a pair of symmetrically arranged fixing mechanisms. A drag elbow plate is arranged between the two fixing mechanisms, and a drag elbow pad is fixedly connected to the drag elbow plate. A traction mechanism is commonly connected below the fixing mechanisms. A clamping unit and a positioning unit that cooperate with each other are respectively arranged on the fixing mechanisms. A ventilation mechanism is integrated inside the fixing mechanisms, and a supplement mechanism is nested inside the ventilation mechanism. The traction mechanism includes a flipping component, a positioning component, and a traction component that are connected to each other. The flipping component is slidably connected to one of the fixing mechanisms, the positioning component is slidably connected to the other fixing mechanism, and the traction component is fixedly connected to the flipping component. The flipping component includes a first limiting unit slidably connected to the fixing mechanism. A bottom end of the first limiting unit is fixedly connected to an outer cylinder. An inner inserting rod is inserted into the outer cylinder. A curved spring is sleeved between the outer cylinder and the inner inserting rod. The inner inserting rod is rotatably connected to an inserting cylinder through a universal ball. A guiding unit slidably connected to the fixing mechanism is fixedly connected to an outer side of the inserting cylinder. The positioning component includes a second limiting unit slidably connected to the fixing mechanism. An outer supporting base is fixedly connected to the second limiting unit. The other end of the outer supporting base is fixedly connected to an inserting hole rod inserted into the inserting cylinder. The traction component includes an L-shaped supporting rod fixedly connected to the outer cylinder. A plurality of annular gravity discs are detachably connected to the L-shaped supporting rod.

[0012] Preferably, the fixing mechanism includes a U-shaped clamping plate. A convex-shaped sliding groove is fixedly connected to a bottom of the U-shaped clamping plate. A group of first inclined clamping grooves are formed on two side walls of the convex-shaped sliding groove. The first inclined clamping grooves are slidably matched with the first limiting unit, the second limiting unit, and the guiding unit. A first process groove is formed on an outer side wall of the U-shaped clamping plate.

[0013] Preferably, both the first limiting unit and the second limiting unit include first convex-shaped sliders slidably connected in the first inclined clamping grooves. Symmetrically arranged bending plates are fixedly connected to tops of the first convex-shaped sliders. First inclined clamping strips embedded in the first inclined clamping grooves are fixedly connected to the bending plates. Weakening grooves are formed on the bending plates. The top of the first convex-shaped slider of the second limiting unit is fixedly connected to the outer supporting base through a fixing column. The first convex-shaped slider of the first limiting unit is fixedly connected to the outer cylinder. The guiding unit includes a second convex-shaped slider slidably connected in the first inclined clamping grooves. Symmetrically arranged L-shaped plates are fixedly connected to tops of the second convex-shaped sliders. The L-shaped plates are attached to an outer side wall of the convex-shaped sliding groove. A first bolt that abuts against the inserting hole rod is screwed through a threaded hole on a fixing plate on an outer side wall of the inserting cylinder.

[0014] Preferably, the universal ball includes a ball socket fixedly connected to the insertion cylinder, and a ball head fixedly connected to the end of the inner insertion rod and disposed within the ball socket. The inner wall of the outer support base is in contact with the drag elbow plate, and a first ventilation hole is formed at the top of the outer support base. The inner insertion rod includes a first bent rod, a first fixing 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 socket. The outer cylinder includes a bent pipe fixedly connected to the first convex slider and a second fixing plate. The second bent rod passes through the second fixing plate and is inserted into the bent pipe. The curved spring is fixedly connected between the first fixing plate and the second fixing plate.

[0015] Preferably, 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 set of second inclined card slots are formed 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 clamping plate. A second inclined card strip inserted into the second inclined card slot is fixedly connected to the U-shaped positioning plate. A U-shaped pulling plate is fixedly connected to the top of the second inclined card strip. The two side walls of the U-shaped positioning plate are of a curved elastic structure.

[0016] Preferably, the ventilation mechanism includes a U-shaped card sleeve fixedly connected within the U-shaped clamping plate. A second process groove is formed on the U-shaped card sleeve, and a U-shaped hole is formed within the second process groove. A plurality of first convex strips arranged in a circumferential array are fixedly connected within the first convex strip. A set of first notches are formed on the first convex strip. A plurality of second weakening sections are provided on the U-shaped card sleeve, and a set of first through holes formed on the U-shaped card sleeve are provided between adjacent first convex strips.

[0017] Preferably, the supplementing mechanism includes a supplementing U-shaped plate fixedly connected to the inner side wall of the U-shaped hole. S-shaped strips arranged in a circumferential array are fixedly connected to the inner side wall of the supplementing U-shaped plate. The other ends of the S-shaped strips are in contact with the inner side wall of the U-shaped hole. A plurality of third process grooves are formed on the supplementing U-shaped plate. A third weakening section is provided on the outer side wall of the supplementing U-shaped plate. The S-shaped strips are made of an elastic material, and the U-shaped card sleeve is made of rubber.

[0018] Preferably, the outer support base is of a rectangular rigid structure, the drag elbow plate is made of rubber, and a second ventilation hole communicating with the first ventilation hole is formed at the top of the drag elbow plate.

[0019] Preferably, the drag elbow pad is fixedly connected to the inner wall of the drag elbow plate. Second convex strips arranged in a circumferential array are fixedly connected to the inner wall of the drag elbow pad. A set of second through holes formed on the drag elbow pad are provided between adjacent second convex strips. Second notches are formed on the second convex strips.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention is provided with a fixing mechanism, a clamping unit and a positioning unit in cooperation. The U-shaped clamping plate conforms to the contour of the human limbs, and can adjust the fixing position according to the thickness of the limbs. Through the self-locking structure composed of an arc-shaped clamping plate, a U-shaped positioning plate, a second inclined slot and a second inclined clamping strip, the clamping radius can be flexibly adjusted to adapt to different limb circumferences. This design solves the problem of poor adaptability of traditional rigid clamping structures, reduces local compression, and lowers the risk of pressure sores.

[0021] Through the mutual cooperation of the flipping component, the positioning component and the 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 clamping plates; the traction component accurately controls the traction force by increasing or decreasing the annular gravity disk. Each component cooperates to meet the diverse requirements of traction direction and force at different treatment stages, balancing the stability and flexibility of the device, making the treatment more scientific and effective, and can be conveniently stored in cooperation with the fixing mechanism.

[0022] Through the close cooperation of the ventilation mechanism and the supplement mechanism, the first through hole, the first convex strip, the first notch of the U-shaped card sleeve and the S-shaped strip of the supplementary U-shaped plate form a three-dimensional ventilation channel. The elbow support plate and the elbow support pad are made of rubber material, and their ventilation holes, convex strips and through holes are designed to work together with the ventilation mechanism and the supplement 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 sweating, and greatly improve the comfort of the patient wearing for a long time.

[0023] While ensuring the structural stability, the device has good adaptability. The sliding connection design of the fixing mechanism and the traction mechanism, as well as the precise cooperation between components, enables the device to maintain stability during traction and can be flexibly changed according to the body position of the affected limb during the rehabilitation process. When the patient is undergoing rehabilitation training, the flipping component can adjust the traction direction in real time following the movement of the limb, and the positioning component ensures that the distance between the U-shaped clamping plates is appropriate, ensuring the smooth progress of the treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0025] Figure 2 is Figure 1 the three-dimensional structural schematic diagram of the second perspective;

[0026] Figure 3 is Figure 2 the enlarged three-dimensional structural schematic diagram at A in

[0027] Figure 4 is Figure 2 the enlarged three-dimensional structural schematic diagram at B in

[0028] Figure 5 is Figure 1 a partially sectional three-dimensional structure schematic diagram;

[0029] Figure 6 is Figure 5 an enlarged three-dimensional structure schematic diagram at position C;

[0030] Figure 7 is a three-dimensional structure schematic diagram of the cooperation of the fixing mechanism, the clamping unit, the positioning unit and the drag elbow plate;

[0031] Figure 8 is an enlarged three-dimensional structure schematic diagram of the cooperation of the ventilation mechanism and the supplement mechanism;

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

[0033] Figure 10 is an enlarged three-dimensional structure schematic diagram of the supplement mechanism;

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

[0035] Figure 12 is Figure 11 a three-dimensional structure schematic diagram from the second perspective.

[0036] The numbers in the figure indicate:

[0037] 1. Fixing mechanism; 11. U-shaped clamping plate; 12. First process groove; 13. Convex chute; 14. First inclined card slot; 2. Clamping unit; 21. Arc-shaped clamping plate; 22. Second inclined card slot; 3. Positioning unit; 31. U-shaped positioning plate; 32. Second inclined card strip; 33. U-shaped pulling plate; 4. Ventilation mechanism; 41. U-shaped card sleeve; 42. Second process groove; 43. First convex strip; 44. First notch; 45. Second weakening section; 46. First through hole; 47. U-shaped hole; 5. Supplement mechanism; 51. Supplement U-shaped plate; 52. S-shaped strip; 53. Third process groove; 54. Third weakening section; 6. Drag elbow plate; 7. Drag elbow pad; 8. Traction mechanism; 81. First limiting unit; 82. Outer cylinder; 83. Inner inserting rod; 85. Curved spring; 86. L-shaped support rod; 87. Ring-shaped gravity disc; 88. Universal ball; 89. Guide unit; 810. Second limiting unit; 811. Outer support base; 812. Inserting cylinder; 813. First ventilation hole; 814. Inserting hole rod; 815. First inclined card strip; 816. First bolt. Specific embodiments

[0038] The following further elaborates on the above and additional technical features and advantages of the present invention with reference to the accompanying drawings.

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

[0040] As Figure 2 shown, the fixing mechanism 1 includes a U-shaped clamping plate 11. The bottom of the U-shaped clamping plate 11 is fixedly connected with a convex chute 13. A group of first inclined card slots 14 are opened on both side walls of the convex chute 13. A first process groove 12 is opened on the outer side wall of the U-shaped clamping plate 11.

[0041] The core component of the fixing mechanism 1 is the U-shaped clamping plate 11. Its design fully considers the ergonomic principle and can closely fit the contour of the human limbs, providing a stable attachment basis for the entire device. The convex chute 13 at the bottom of the U-shaped clamping plate 11 and the first inclined card slots 14 on both side walls are the key structures for realizing the flexible adjustment of the traction mechanism 8. The convex chute 13 provides a precise sliding track for the traction mechanism 8 to ensure its stable sliding along the axial direction of the limb and effectively avoid lateral deviation. The first inclined card slots 14 are precisely matched with the traction mechanism 8, making the traction mechanism 8 more smooth and precise when adjusting the position and angle. In addition, the first process groove 12 on the outer side wall of the U-shaped clamping plate 11 adopts a hollow design, which not only reduces the overall weight of the device but also enhances the wearing flexibility, making the patient more comfortable and convenient during use.

[0042] As Figures 2 to 5 、 Figure 11 and Figure 12As shown, the traction mechanism 8 includes a turnover component, a positioning component, and a traction component that are connected to each other. The turnover component is slidably connected to one of the fixing mechanisms 1, the positioning component is slidably connected to the other fixing mechanism 1, and the traction component is fixedly connected to the turnover component; the turnover component includes a first limiting unit 81 slidably connected to the fixing mechanism 1. A lower end of the first limiting unit 81 is fixedly connected to an outer cylinder 82. An inner insertion rod 83 is inserted into the outer cylinder 82. A bent spring 85 is sleeved between the outer cylinder 82 and the inner insertion rod 83. The inner insertion rod 83 is rotatably connected to an insertion cylinder 812 through a universal ball 88. A guiding unit 89 that is slidably connected to the fixing mechanism 1 is fixedly connected to an outer side of the insertion cylinder 812; the positioning component includes a second limiting unit 810 slidably connected to the fixing mechanism 1. An outer supporting base 811 is fixedly connected to the second limiting unit 810. The other end of the outer supporting base 811 is fixedly connected to an insertion hole rod 814 inserted into the insertion cylinder 812. The traction component includes an L-shaped support rod 86 fixedly connected to the outer cylinder 82. A plurality of annular gravity disks 87 are detachably connected to the L-shaped support rod 86. The first inclined card slot 14 is slidably matched with the first limiting unit 81, the second limiting unit 810, and the guiding unit 89. The second bolts on the ball sleeve and the elbow pipe can respectively abut against the ball head and the second bent rod to further fix the angle. After adjusting to a suitable traction angle, tighten the second bolts to prevent the angle from accidentally changing during traction.

[0043] Both the first limiting unit 81 and the second limiting unit 810 include a first convex slider slidably connected to the first inclined card slot 14. Symmetrically arranged bent plates are fixedly connected to a top of the first convex slider. A first inclined card strip 815 inserted into the first inclined card slot 14 is fixedly connected to the bent plates. Weakening grooves are formed in the bent plates; the top of the first convex slider of the second limiting unit 810 is fixedly connected to the outer supporting base 811 through a fixing column, and the first convex slider of the first limiting unit 81 is fixedly connected to the outer cylinder 82; the guiding unit 89 includes a second convex slider slidably connected to the first inclined card slot 14. Symmetrically arranged L-shaped plates are fixedly connected to a top of the second convex slider. The L-shaped plates are attached to an outer side wall of the convex chute 13. A first bolt 816 that abuts against the insertion hole rod 814 is screwed through a threaded hole on a fixing plate on an outer side wall of the insertion cylinder 812.

[0044] The universal ball 88 includes a ball socket fixedly connected to the insertion cylinder 812, and a ball head fixedly connected to the end of the inner insertion rod 83 and disposed inside the ball socket. The inner wall of the outer support base 811 is in contact with the towing elbow plate 6, and a first ventilation hole 813 is provided at the top of the outer support base 811; the inner insertion rod 83 includes a first bent rod, a first fixing 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 socket. The outer cylinder 82 includes a bent pipe fixedly connected to the first convex slider and a second fixing plate. The second bent rod passes through the second fixing plate and is inserted into the bent pipe. The curved spring 85 is fixedly connected between the first fixing plate and the second fixing plate. The outer support base 811 is a loop-shaped rigid structure. Second bolts are screwed through threaded holes on both the ball socket and the bent pipe. One end of the second bolt located on the ball socket abuts against the ball head, and one end of the second bolt located on the bent pipe abuts against the second bent rod as Figure 2 shown.

[0045] The flipping assembly mainly consists of a first limiting unit 81, an outer cylinder 82, an inner insertion rod 83, a curved spring 85, a universal ball 88, and a guiding unit 89. The first limiting unit 81 slides in the first inclined slot 14 of the fixing mechanism 1, so that the entire flipping assembly can move smoothly along the fixing mechanism 1. The curved spring 85 sleeved between the outer cylinder 82 and the inner insertion rod 83 plays a key role in buffering and protecting. When being towed, when the limb suddenly receives force, the spring 85 can effectively relieve the pulling force and prevent secondary injury to the injured limb. The inner insertion rod 83 is rotatably connected to the insertion cylinder 812 through the universal ball 88. The universal ball 88 is composed of a ball socket fixed on the insertion cylinder 812 and a ball head fixed at the end of the inner insertion rod 83 and located inside the ball socket. This structure enables the inner insertion rod 83 to rotate freely in multiple directions. Doctors can flexibly adjust the traction angle according to the specific conditions of the patient's injury, such as the position and angle of the fracture. During the rehabilitation training stage, when the patient's limb moves, the flipping assembly can adjust the traction direction in real time following the movement of the limb. For example, when the patient performs simple joint flexion and extension activities, the flipping assembly can ensure the traction effect while not interfering with the patient's rehabilitation training movements, enabling the patient to perform appropriate rehabilitation training under the traction state and promoting recovery.

[0046] The positioning component includes a second limiting unit 810, an outer support base 811, a jacking rod 814, and a first bolt 816. The second limiting unit 810 also slides within the first inclined card slot 14 of the fixing mechanism 1. Its top is fixedly connected to the outer support base 811 through a fixing column. The outer support base 811 mainly serves to support the drag elbow plate 6. Its inner wall fits with the drag elbow plate 6, providing stable support for the drag elbow plate 6. The jacking rod 814 fixedly connected to the other end of the outer support base 811 is inserted into the socket tube 812. The first bolt 816 on the fixing plate of the outer side wall of the socket tube 812 abuts against the jacking rod 814 after being screwed through the threaded hole. When it is necessary to adjust the distance between a pair of U-shaped clamping plates 11, first slide the second limiting unit 810, which will drive the outer support base 811 to move, thereby adjusting the position of the drag elbow plate 6. At this time, the jacking rod 814 will move within the socket tube 812. After adjusting to the appropriate position, tighten the first bolt 816 to firmly abut against the jacking rod 814, locking the outer support base 811 and the socket tube 812 firmly together. In this way, the stretching of the drag elbow plate 6 is realized under the cooperation of the flipping component, thereby adjusting the distance between the U-shaped clamping plates 11. For example, when treating limb fractures of different lengths, the distance between the U-shaped clamping plates 11 can be adjusted according to the actual situation to ensure that the traction force is evenly distributed on the injured limb, improving the treatment effect.

[0047] The traction component mainly consists of an L-shaped support rod 86 and an annular gravity disk 87. The L-shaped support rod 86 is fixedly connected to the outer cylinder 82, and the annular gravity disk 87 is detachably installed on the L-shaped support rod 86. Doctors can accurately control the traction force by increasing or decreasing the number of annular gravity disks 87 according to the patient's weight, the severity of the fracture, and different treatment stages. For patients with more severe fractures who require a larger traction force for reduction and fixation, the number of annular gravity disks 87 can be increased; for patients with less severe fractures or in the later stage of rehabilitation who require a gradually reduced traction force, the number of annular gravity disks 87 can be correspondingly reduced. For example, in the initial stage of treatment, in order to overcome the muscle contraction force and make the fracture ends reset as soon as possible, more gravity disks may need to be hung; as the fracture gradually heals, in order to avoid damage to the bones and surrounding tissues caused by excessive traction, the number of gravity disks can be gradually reduced. This way of accurately controlling the traction force can make the treatment more scientific and safe, contributing to improving the patient's rehabilitation quality.

[0048] Separate the flipping component and the positioning component and fix them respectively below the U-shaped clamping plates 11, and the drag elbow pad 7 and the drag elbow plate 6 can be bent, thereby making the U-shaped clamping plates 11 approach each other. Furthermore, it can be made that when not in use, it does not occupy a large amount of space and is extremely convenient for storage, which not only provides convenience for the storage management of medical institutions but also facilitates the patient's use and storage at home.

[0049] In actual use, the three components work together. First, according to the patient's injury condition, the traction angle is adjusted through the flipping component and fixed using the second bolts on the ball sleeve and the elbow pipe. Then, the positioning component is used to slide the second limiting unit 810 to adjust the position of the elbow plate 6, thereby determining the appropriate distance between the U-shaped clamping plates 11, and locking it with the first bolt 816. Finally, according to the treatment requirements, the number of annular gravity discs 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, these three components can be adjusted accordingly at any time to ensure that the traction treatment always achieves the best effect.

[0050] As Figure 3 shown, the clamping position unit 2 includes an arc-shaped clamping plate 21 fixedly connected to the end of the U-shaped clamping plate 11. The arc-shaped clamping plate 21 is attached to the outer wall of the U-shaped clamping plate 11, and a set of second inclined card slots 22 are formed on the outer wall of the arc-shaped clamping plate 21. The positioning unit 3 includes a U-shaped positioning plate 31 fixedly connected to the outer wall of the U-shaped clamping plate 11. A second inclined card strip 32 embedded in the second inclined card slot 22 is fixedly connected to the U-shaped positioning plate 31. A U-shaped pulling plate 33 is fixedly connected to the top of the second inclined card strip 32. The two side walls of the U-shaped positioning plate 31 are of a curved elastic structure.

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

[0052] As Figure 1 、 Figures 8 to 10 shown, the ventilation mechanism 4 includes a U-shaped card sleeve 41 fixedly connected inside the U-shaped clamping plate 11. A second process groove 42 is formed on the U-shaped card sleeve 41. A U-shaped hole 47 is formed in the second process groove 42. A plurality of first convex strips 43 arranged in a circumferential whole column are fixedly connected inside the first convex strip 43. A set of first notches 44 are formed on the first convex strip 43. A plurality of second weakening sections 45 are arranged on the U-shaped card sleeve 41. A set of first through holes 46 formed on the U-shaped card sleeve 41 are arranged between adjacent first convex strips 43.

[0053] The supplementary mechanism 5 includes a supplementary U-shaped plate 51 fixedly connected to the inner side wall of the U-shaped hole 47. The inner side wall of the supplementary U-shaped plate 51 is fixedly connected with S-shaped strips 52 distributed in a circumferential array. The other end of the S-shaped strip 52 abuts against the inner side wall of the U-shaped hole 47. The supplementary U-shaped plate 51 is provided with a plurality of third process grooves 53. The outer side wall of the supplementary U-shaped plate 51 is provided with a third weakening section 54. The S-shaped strip 52 is made of an elastic material, and the U-shaped card 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 board 11. The second process groove 42, the U-shaped hole 47, the first convex strips 43 and the first notches 44 distributed in a circumferential array on it, and the first through hole 46 together constitute a preliminary ventilation structure. The first convex strips 43 and the first notches 44 divide the contact area into multiple independent regions, 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 to the inner side wall of the U-shaped hole 47. The S-shaped strips 52 distributed in a circumferential array on it are made of an elastic material. After the S-shaped strips 52 are inserted into 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 limb moves, the S-shaped strips 52 undergo reciprocating deformation, promoting air convection and accelerating heat dissipation and sweating of the contact part. The rubber material of the U-shaped card sleeve 41 has flexibility and acts together with the convex strip structure to effectively disperse the limb contact pressure, making the patient more comfortable during long-term wearing.

[0055] The elbow support plate 6 is made of rubber material. The top of the elbow support plate 6 is provided with a second ventilation hole communicating with the first ventilation hole 813. The elbow support pad 7 is fixedly connected to the inner wall of the elbow support plate 6. The inner wall of the elbow support pad 7 is fixedly connected with second convex strips distributed in a circumferential array. A group of second through holes are opened on the elbow support pad 7 between adjacent second convex strips. Second notches are opened on the second convex strips.

[0056] The elbow support plate 6 is made of rubber material. The second ventilation hole opened on its top communicates with the first ventilation hole 813 of the outer support base 811 to form a vertical ventilation path, strengthening air circulation. The elbow support pad 7 is fixed to the inner wall of the elbow support plate 6. The second convex strips and the second through holes distributed in a circumferential array on its inner wall, and the second notches on the second convex strips further reduce the contact area between the limb and the elbow support pad 7 and disperse the pressure. These designs of the elbow support plate 6 and the elbow support pad 7 work together with the ventilation mechanism 4 and the supplementary mechanism 5 to form a multi-layer ventilation system, which can sweat and dissipate heat more effectively, reduce sweat accumulation, and greatly improve the comfort of the patient during long-term wearing in combination with the elastic buffer characteristics of the rubber material.

[0057] The above is only a preferred embodiment of the present invention, which is illustrative rather than restrictive to the present invention. Those skilled in the art understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, but all will fall within the protection scope of the present invention.

Claims

1. An orthopedic traction device, characterized in that: It comprises a pair of symmetrically arranged fixing mechanisms, an elbow drag plate is provided between the two fixing mechanisms, and an elbow drag pad is fixedly connected to the elbow drag plate; The fixing mechanism is connected with 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. The traction mechanism comprises 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 comprises 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 insert cylinder through a universal ball, and a guide unit slidably connected to the fixing mechanism is fixedly connected to the outer side of the insert cylinder; The positioning assembly comprises a second limiting unit slidably connected to the fixing mechanism, the second limiting unit is fixedly connected to an outer support base, and the other end of the outer support base is fixedly connected to a socket rod inserted into the insert tube; The traction assembly comprises 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, characterized in that: 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, a group of first oblique slots are opened on both side walls of the convex slide groove, the first oblique slots are 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 both include a first convex slider slidably connected to the first oblique slot, a symmetrically arranged bending plate is fixedly connected to the top of the first convex slider, a first oblique clamping strip embedded in the first oblique slot is fixedly connected to the bending plate, and a weakening groove is provided on the bending 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 sliding block slidably connected to the first oblique slot, and a symmetrically arranged L-shaped plate is fixedly connected to the top of the second convex sliding block. The L-shaped plate is fitted with the outer wall of the convex sliding slot, and a first bolt that interferes with the socket rod is screwed on the fixing plate on the outer wall of the insert through a threaded hole.

4. The orthopedic traction device according to claim 3, characterized in that: 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 insert 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 second bent rod has a smaller diameter than 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 sliding block, 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, characterized in that: The clamping unit comprises an arc-shaped clamping plate fixedly connected to the end of the U-shaped clamping plate, the arc-shaped clamping plate is fitted 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 clamping strip embedded in a second oblique clamping groove is fixedly connected to the U-shaped positioning plate, a U-shaped pull plate is fixedly connected to the top of the second oblique clamping strip, and the two side walls of the U-shaped positioning plate are curved elastic structures.

6. The orthopedic traction device according to claim 2, characterized in that: 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 are 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.

7. The orthopedic traction device according to claim 6, characterized in that: The supplementing mechanism comprises 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 with 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, characterized in that: The external supporting base is a circular rigid structure, the toggle plate is made of rubber, and a second air hole communicating with the first air hole is provided on the top of the toggle plate.

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

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