Lower limb lifting cushion for orthopedics department

Abstract

The invention provides an orthopaedic lower limb raising pad which comprises a lifting base, an angle self-adaption mechanism, an angle adjusting plate, a ventilation buffer plate and a foot fixing mechanism, and the angle self-adaption mechanism installed on the lifting base achieves accurate adjustment of the angle of the lower limb through cooperation of a two-way screw and a moving block. The lower limbs of the patient are always at the optimal treatment angle, and discomfort and poor treatment effect caused by improper angle are avoided; hollow holes are formed in the surface of the ventilation buffer plate, so that air circulation can be effectively promoted, and skin discomfort is reduced; the foot fixing mechanism ensures the stability of the feet of the patient through a telescopic rod and a foot limiting plate, deviation is prevented, and secondary injury is avoided; in addition, the design of the sealing cover effectively protects internal components, prolongs the service life of the equipment, and guarantees the operation convenience. The foot fixing device is simple in structure, convenient to operate, high in comfort and capable of effectively solving the problems that in the prior art, angle adjustment is not accurate, foot fixing is not stable, and ventilation is not sufficient.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to a lower limb lifting pad for orthopedics. Background Art

[0002] With the development of medical technology, orthopedic treatment methods are constantly enriched, especially in the process of fracture recovery, the elevation and angle adjustment of the patient's lower limbs have become an important part of rehabilitation treatment. Clinically, for fracture patients, especially those with lower limb fractures, it is often necessary to properly elevate and support the patient's lower limbs to reduce limb swelling, promote blood circulation, and ensure the stability and comfort of the fracture site.

[0003] At present, the existing orthopedic lower limb lifting pads usually assist patients through simple support devices or single angle adjustment methods, but these devices generally have the following shortcomings: First, they lack adaptive angle adjustment function and cannot flexibly adjust the angle according to the patient's comfort and treatment needs; second, the operation is cumbersome and requires others to help the patient adjust the angle and position, which lacks convenience; third, the existing equipment often ignores the problem of ventilation and heat dissipation, and cannot effectively avoid skin problems or discomfort caused by lack of air circulation; fourth, there is a lack of reasonable design for the fixation and protection of the feet, which can easily cause the patient's feet to slip or become unstable, thereby affecting the treatment effect. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an orthopedic lower limb lifting pad, which achieves adaptive angle adjustment of the lower limbs, convenient operation, effective ventilation and heat dissipation, and stable fixation of the feet, ensuring the comfort, safety and treatment effect of patients during the treatment process.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: An orthopedic lower limb lifting pad comprises a lifting base, the lifting base comprises a base body placed on a hospital bed, a guiding slope is arranged on the front side of the base body, a mounting cavity is opened on the upper surface of the base body, and an angle adaptive mechanism is installed on the top of the lifting base; The angle adaptive mechanism comprises a lifting block and an angle adjustment plate which are installed in a lifting manner above the interior of the installation cavity, a mounting bolt is arranged on the front side of the upper surface of the lifting block, a through slot is arranged on the rear side of the upper surface of the lifting block, and an angle fixing mechanism is arranged inside the through slot; The angle fixing mechanism is used to lock and fix the angle of the angle adjustment plate; The angle adjustment plate is in an upwardly open U-shaped structure, a ventilation buffer plate is suspended inside the angle adjustment plate, hollow holes are evenly opened on the surface of the ventilation buffer plate, the center of the ventilation buffer plate is concave downward, straps are connected to both sides of the angle adjustment plate, Velcro is glued on the surface of the straps, and a foot fixing mechanism is telescopically installed at the rear end of the angle adjustment plate; The foot fixing mechanism is used to limit the position of the patient's foot; The foot fixing mechanism includes a baffle, a rotating shaft is symmetrically mounted on the surface of the baffle, a foot limiting plate is arranged at the front end of the rotating shaft, and a ratchet is installed at the rear end of the rotating shaft, the foot limiting plate and the ratchet are respectively arranged on the front and rear surfaces of the baffle, and the two foot limiting plates limit the two sides of the patient's foot.

[0006] The present invention further defines the technical solution: Furthermore, a bidirectional screw is rotatably installed at the lower part of the installation cavity, the rear end of the bidirectional screw protrudes out of the rear surface of the base body, and a knob is provided at the rear end of the bidirectional screw. A moving block is symmetrically and slidably installed at the lower part of the installation cavity, and the two moving blocks are respectively screwed on different thread surfaces of the bidirectional screw, and connecting rods are hinged on the tops of the two moving blocks, and the ends of the two connecting rods facing away from the moving blocks are hinged at the bottom of the lifting block.

[0007] Furthermore, the angle adjustment plate is placed on the top of the lifting block, the front side of the angle adjustment plate is hinged on the mounting bolt, an arc-shaped gear rod is welded on the lower surface of the angle adjustment plate, the arc-shaped gear rod coincides with the center of the mounting bolt, and the arc-shaped gear rod passes through the through slot.

[0008] Furthermore, the angle fixing mechanism includes a fixed cylinder laterally fixed on the rear side of the lifting block, the fixed cylinder passes through a through groove, a linkage gear is rotatably installed on the surface of the fixed cylinder, the linkage gear is meshed with an arc-shaped gear rod, one end of the linkage gear is evenly provided with a first tooth groove with its center as the center of the circle, a sliding rod is slidably installed inside the fixed cylinder, open grooves are symmetrically opened on the surface of the fixed cylinder, a movable sleeve is slidably installed on the surface of the fixed cylinder, and a second tooth groove is evenly opened on one side of the movable sleeve with its center as the center of the circle, and the second tooth groove is meshed with the first tooth groove.

[0009] Furthermore, the movable sleeve is installed on the sliding rod by bolts, and the bolts pass through the open groove on the surface of the fixed cylinder. A second spring is placed on the inside of the fixed cylinder, one end of the second spring is in contact with the end of the sliding rod, and a control pressure head is provided on the outer end of the second spring, and the control pressure head is placed on the outside of the lifting block.

[0010] Furthermore, telescopic rods are symmetrically arranged below the front surface of the baffle, and both of the telescopic rods slide inside the angle adjustment plate. The inner walls on both sides of the angle adjustment plate are symmetrically provided with sliding grooves adapted to the telescopic rods, and the front side of the baffle is provided with a fitting concave surface adapted to the foot.

[0011] Furthermore, a protective box is provided on the rear surface of the baffle, and the two ratchets are placed inside the protective box. A protrusion is symmetrically provided on the back of the baffle, and the protrusion is placed between the two ratchets. A movable rod is installed on the surface of the protrusion for transverse sliding. A limiting head is provided at one end of the two movable rods that are away from each other, and a wedge block is provided on the end of the limiting head. The wedge block is meshed with the ratchet, and a third spring is sleeved on the surface of the movable rod, and the third spring is placed between the protrusion and the limiting head.

[0012] Furthermore, a sealing cover is installed at the open end of the protective box body by bolts, a track groove is horizontally opened at the center of the surface of the sealing cover, and a toggle rod is arranged on the side where the two movable rods are close to each other, and the two toggle rods both pass through the track groove.

[0013] The present invention provides an orthopedic lower limb lifting pad, which has the following beneficial effects: First, the present invention solves the problem of the lack of precise angle adjustment and adaptive functions in existing equipment through the design of the lifting base and the angle adaptive mechanism. Through the cooperation of the bidirectional screw and the moving block, the patient or the caregiver can easily adjust the position of the angle adjustment plate to ensure that the patient's lower limbs are always at the optimal treatment angle, avoiding poor treatment effects due to improper angles. The introduction of the angle adaptive mechanism makes the angle adjustment of the device more accurate and stable, and it is not easy to loosen or deviate during the adjustment process, ensuring the durability of the treatment effect.

[0014] Secondly, the design of the ventilation buffer plate solves the problem that existing equipment lacks ventilation and heat dissipation functions. The evenly distributed hollow holes on the surface of the ventilation buffer plate can effectively promote air circulation and avoid discomfort and skin problems caused by raising the lower limbs for a long time. In addition, the concave design of the ventilation buffer plate not only increases comfort, but also effectively reduces local compression through evenly distributed pressure, improving the comfort of patients during treatment.

[0015] In terms of foot fixation, the present invention successfully solves the problem of foot instability in existing devices through the combined design of a telescopic rod and a foot stop plate. The adjustment function of the telescopic rod enables the device to be personalized according to the specific needs of the patient, ensuring that the foot is always fixed in the appropriate position. The design of the foot stop plate effectively prevents the deviation of the patient's foot, avoids the occurrence of secondary injuries, and improves the safety of treatment. The meshing mechanism of the ratchet and the movable rod allows the foot stop plate to be easily locked, and the appropriate force is provided by the third spring to ensure the stability and accuracy during the adjustment process.

[0016] Finally, the design of the sealing cover solves the problem of insufficient protection measures in existing equipment. The protective box and sealing cover can effectively protect the internal mechanical parts from dust and pollutants, extending the service life of the equipment. In addition, the track groove design of the sealing cover allows the toggle lever to operate smoothly, further improving the convenience of the equipment and ensuring easy adjustment by patients or caregivers during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the front view structure of Figure 4 It is a schematic diagram of the internal structure of the through slot of the present invention; Figure 5 It is a top view schematic diagram of the angle fixing mechanism of the present invention; Figure 6 It is a schematic diagram of the installation structure of the linkage gear and the slide rod of the present invention; Figure 7 It is a schematic diagram of the installation structure of the angle adjustment plate and the foot fixing structure of the present invention; Figure 8 It is a rear view structural schematic diagram of the foot fixing structure of the present invention; Fig. 9 It is a schematic diagram of the internal structure of the protection box of the present invention; Fig.10 It is a schematic diagram of the structure of the foot limiting plate of the present invention.

[0018] Among them, 1. lifting base; 11. base body; 12. guiding slope; 13. installation cavity; 14. bidirectional screw; 15. knob; 16. moving block; 17. connecting rod; 2. Angle adaptive mechanism; 21. Lifting block; 22. Mounting bolt; 23. Through slot; 24. Angle adjustment plate; 25. Ventilation buffer plate; 26. Strap; 261. Velcro; 27. Arc gear rod; 28. First spring; 29. ​​Elastic bolt; 3. Angle fixing mechanism; 31. Fixed cylinder; 32. Linkage gear; 33. First tooth groove; 34. Movable sleeve; 341. Second tooth groove; 35. Sliding rod; 36. Control pressure head; 37. Second spring; 4. Foot fixing mechanism; 41. Baffle; 42. Fitting concave surface; 43. Telescopic rod; 44. Rotating shaft; 45. Foot limit plate; 46. Ratchet; 47. Protective box; 48. Sealing cover; 481. Track groove; 49. Movable rod; 491. Toggle rod; 410. Bump; 411. Limit head; 412. Third spring; 413. Wedge block. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0020] See also Figure 1-10 A lower limb lifting pad for orthopedics includes a lifting base 1, the lifting base 1 includes a base body 11 placed on a bed, a guide slope 12 is arranged on the front side of the base body 11, a mounting cavity 13 is opened on the upper surface of the base body 11, and an angle adaptive mechanism 2 is installed on the top of the lifting base 1; The angle adaptive mechanism 2 includes a lifting block 21 and an angle adjustment plate 24 which are installed in a lifting manner above the inside of the installation cavity 13. A mounting bolt 22 is provided on the front side of the upper surface of the lifting block 21. A through slot 23 is provided on the rear side of the upper surface of the lifting block 21. An angle fixing mechanism 3 is provided inside the through slot 23. The angle fixing mechanism 3 is used to lock and fix the angle of the angle adjustment plate 24; The angle adjustment plate 24 is an upwardly open U-shaped structure, a ventilation buffer plate 25 is suspended inside the angle adjustment plate, and hollow holes are evenly opened on the surface of the ventilation buffer plate 25. The rear end of the angle adjustment plate 24 is telescopically installed with a foot fixing mechanism 4; The foot fixing mechanism 4 is used to limit the position of the patient's foot.

[0021] See also Figure 1-4A bidirectional screw 14 is rotatably installed at the bottom of the installation cavity 13, and the rear end of the bidirectional screw 14 exceeds the rear surface of the base body 11. A knob 15 is provided at the rear end of the bidirectional screw 14, and a moving block 16 is symmetrically slidably installed at the bottom of the installation cavity 13. The two moving blocks 16 are respectively screwed on different thread surfaces of the bidirectional screw 14, and the tops of the two moving blocks 16 are hinged with connecting rods 17, and the ends of the two connecting rods 17 facing away from the moving blocks 16 are hinged at the bottom of the lifting block 21.

[0022] The thread surface of the bidirectional screw 14 is made of wear-resistant alloy material, which ensures stability and smooth operation during long-term use. The design of the knob 15 ensures that the patient or caregiver can easily adjust the position of the lifting block 21, and the adjustment process does not require professional operation, which is suitable for elderly patients or people with limited mobility.

[0023] See also Figure 1 The center of the ventilation buffer plate 25 is concave downward, and straps 26 are connected to both sides of the angle adjustment plate 24, and Velcro 261 is glued to the surface of the straps 26.

[0024] The ventilation buffer plate 25 is made of synthetic material with high air permeability to ensure air circulation and reduce skin discomfort caused by lack of ventilation during the process of raising the lower limbs. The strap 26 is made of high-strength fabric material, and the Velcro 261 is adjustable and has a firm fixing effect, making the fixation of the lower limbs safer and more reliable, and easy to operate.

[0025] See also Figure 1-3 The angle adjustment plate 24 is placed on the top of the lifting block 21 , the front side of the angle adjustment plate 24 is hinged on the mounting bolt 22 , an arc-shaped gear rod 27 is welded on the lower surface of the angle adjustment plate 24 , the arc-shaped gear rod 27 coincides with the center of the mounting bolt 22 , and the arc-shaped gear rod 27 passes through the through slot 23 .

[0026] The design of the angle adjustment plate 24 ensures high stability when the angle changes. The welded arc-shaped gear rod 27 and the mounting bolt 22 have very high matching accuracy, so that the angle adjustment plate 24 can be freely adjusted on the lifting block 21 while maintaining a stable angle lock to avoid looseness.

[0027] See also Figure 4-7 The angle fixing mechanism 3 includes a fixed cylinder 31 which is laterally fixed on the rear side of the lifting block 21. The fixed cylinder 31 passes through the through groove 23. A linkage gear 32 is rotatably installed on the surface of the fixed cylinder 31. The linkage gear 32 is meshed with the arc-shaped gear rod 27. One end of the linkage gear 32 is evenly provided with a first tooth groove 33 with its center as the center of the circle. A sliding rod 35 is slidably installed inside the fixed cylinder 31. Open grooves are symmetrically provided on the surface of the fixed cylinder 31. A movable sleeve 34 is slidably installed on the surface of the fixed cylinder 31. One side of the movable sleeve 34 is evenly provided with a second tooth groove 341 with its center as the center of the circle. The second tooth groove 341 is meshed with the first tooth groove 33.

[0028] The meshing design of the linkage gear 32 and the arc-shaped gear rod 27 allows the angle adjustment plate 24 to be precisely locked, avoiding excessive errors during the adjustment process and ensuring that the patient is at the optimal treatment angle. The combined design of the fixed cylinder 31, the slide rod 35 and the movable sleeve 34 can release or lock the angle adjustment plate 24 by controlling the pressure head 36 when necessary, so that the patient can easily adjust the angle without additional tools. All key components are made of corrosion-resistant alloy materials, which prolongs the service life of the equipment and ensures its stability in long-term use.

[0029] See also Figure 4-7 The movable sleeve 34 is installed on the sliding rod 35 by bolts, and the bolts pass through the open groove on the surface of the fixed cylinder 31. A second spring 37 is placed on the inside of the fixed cylinder 31. One end of the second spring 37 contacts the end of the sliding rod 35, and a control pressure head 36 is provided on the outer end of the second spring 37. The control pressure head 36 is placed on the outside of the lifting block 21.

[0030] The design of the second spring 37 enables the angle adjustment plate 24 to automatically adjust its angle according to the pressure change, and adjust the fixed state by controlling the compression and release of the pressure head 36. The use of the spring system ensures the flexibility of the structure while maintaining the stability and accuracy of the angle adjustment.

[0031] See also Figure 8-10 The foot fixing mechanism 4 includes a baffle 41, and telescopic rods 43 are symmetrically arranged below the front surface of the baffle 41. The two telescopic rods 43 slide inside the angle adjustment plate 24. The inner walls on both sides of the angle adjustment plate 24 are symmetrically provided with sliding grooves adapted to the telescopic rods 43. The front side of the baffle 41 is provided with a fitting concave surface 42 adapted to the foot.

[0032] The telescopic rod 43 is made of wear-resistant alloy material to ensure that it will not loosen or wear during frequent adjustments. The design of the slide groove allows the telescopic rod 43 to slide smoothly in the angle adjustment plate 24, thereby achieving accurate foot fixation.

[0033] See also Figure 8-10 A rotating shaft 44 is symmetrically rotatably installed on the surface of the baffle 41, a foot limiting plate 45 is provided at the front end of the rotating shaft 44, and a ratchet 46 is installed at the rear end of the rotating shaft 44. The foot limiting plate 45 and the ratchet 46 are respectively placed on the front and rear surfaces of the baffle 41, and the two foot limiting plates 45 limit the two sides of the patient's foot.

[0034] The combination of the ratchet 46 and the foot stop plate 45 ensures the stability of the foot position and avoids secondary injury caused by sliding of the patient's foot during the adjustment process. The rotating design of the shaft 44 allows the patient or the caregiver to easily adjust the angle and position of the stop plate, increasing the flexibility of the device.

[0035] See also Figure 8-10 A protective box 47 is provided on the rear surface of the baffle 41, and two ratchet wheels 46 are placed inside the protective box 47. A protrusion 410 is symmetrically provided on the back of the baffle 41, and the protrusion 410 is placed between the two ratchet wheels 46. A movable rod 49 is installed on the surface of the protrusion 410 for transverse sliding. A limit head 411 is provided at one end of the two movable rods 49 that are away from each other, and a wedge block 413 is provided at the end of the limit head 411. The wedge block 413 is meshed with the ratchet wheel 46. A third spring 412 is sleeved on the surface of the movable rod 49, and the third spring 412 is placed between the protrusion 410 and the limit head 411.

[0036] The meshing mechanism between the movable rod 49 and the ratchet 46 can accurately control the locking and releasing of the foot limit plate 45, ensuring that the foot is in a proper position, and provide appropriate pressure through the third spring 412 to increase the accuracy and stability of the operation.

[0037] See also Figure 8-10 The end of the protective box 47 is open and a sealing cover 48 is installed by bolts. A track groove 481 is horizontally opened at the center of the surface of the sealing cover 48. A toggle rod 491 is set on the side where the two movable rods 49 are close to each other, and the two toggle rods 491 both penetrate the track groove 481.

[0038] The design of the sealing cover 48 can not only protect the internal mechanical components from being damaged by dust or foreign objects, but also ensure that the operation of the toggle rod 491 is smooth during use, ensuring that the patient can easily adjust the position of the foot as needed. Example

[0039] This embodiment optimizes the design of the angle adaptive mechanism of the present invention. Through the cooperation of the bidirectional screw 14 and the moving block 16, the lifting base 1 can achieve precise adjustment of the angle of the lower limb. In this embodiment, the bidirectional screw 14 adopts an alloy material with a diameter of 10mm and a material of stainless steel to enhance the wear resistance and stability of the thread surface; the matching accuracy of the thread surface of the moving block 16 and the bidirectional screw 14 is controlled within 0.01mm to ensure smoothness and stability during angle adjustment. By rotating the knob 15, the patient or caregiver can easily adjust the angle of the angle adjustment plate 24 to ensure that the lower limb is at the optimal treatment angle. During the adjustment process, the two moving blocks 16 rotate according to the thread surface of the bidirectional screw respectively, driving the lifting block 21 to rise and fall inside the installation cavity 13, thereby achieving precise angle adjustment.

[0040] This embodiment significantly improves the adjustment accuracy and operational convenience, solves the problems of inaccurate angle adjustment and complicated operation in the prior art, and ensures the therapeutic effect of the patient's lower limbs. Example

[0041] This embodiment focuses on optimizing the design of the ventilation buffer plate 25 to improve the problem of insufficient ventilation in existing equipment. The ventilation buffer plate adopts a highly breathable composite material (such as a polyester fiber and spandex composite material) with a thickness of 3mm and evenly distributed hollow holes with a hole diameter of 2mm on the surface. The material has good elasticity and air permeability, and can effectively reduce the accumulation of moisture and heat generated during long-term use. The central part of the ventilation buffer plate is designed to be concave, which can effectively disperse the pressure on the patient's lower limbs and avoid local blood circulation problems. Through this design, patients can enjoy good ventilation when using the lower limb lifting pad, reducing skin problems or discomfort caused by lack of air circulation.

[0042] In this embodiment, the design of the ventilation buffer plate ensures that the patient can remain comfortable when the lower limbs are raised for a long time, and effectively solves the problem of lack of ventilation and heat dissipation design in the prior art. Example

[0043] This embodiment improves the foot fixing mechanism 4. To address the problems of unstable feet and difficult fixation in the prior art, a design combining a telescopic rod 43 and a foot stop plate 45 is adopted. The length of the telescopic rod 43 is adjustable from 20 cm to 40 cm to adapt to the length of the lower limbs of different patients. The telescopic rod is made of corrosion-resistant aluminum alloy to ensure its stability and durability in long-term use. Slide grooves matching the telescopic rod 43 are provided on both sides of the angle adjustment plate 24. The width of the slide groove is 2 mm and the depth is 3 mm, so that the telescopic rod can slide smoothly inside the angle adjustment plate.

[0044] In the foot limit design, the rotating shaft 44 is installed at the front end of the baffle 41. By rotating the installation, the foot limit plate 45 can accurately limit the patient's foot to prevent it from sliding during the treatment process. The cooperation between the foot limit plate 45 and the ratchet 46 ensures the stability of the foot and avoids deviation caused by patient movement or angle adjustment. The angle of the limit plate can be adjusted between 30° and 90° to meet the needs of different patients.

[0045] This embodiment solves the problem of unstable and easy sliding of the foot in the prior art, so that the patient's foot can be stably fixed and secondary injuries caused by foot deviation are avoided. Example

[0046] This embodiment improves the design of the protective box 47 and the sealing cover 48, and solves the problem of lack of protective design in the existing equipment. The protective box 47 is made of high-strength ABS plastic material with a thickness of 5mm, which can effectively prevent dust and pollutants from entering the interior of the device and protect the safety of internal components. The end opening of the protective box 47 is fixed with a sealing cover 48 by bolts, and the sealing cover 48 uses a silicone sealing ring to ensure that the components inside the protective box are protected from external contamination.

[0047] A track groove 481 is provided at the center of the surface of the sealing cover 48, and the toggle design of the movable rod 49 ensures that the sealing cover 48 can be smoothly opened and closed. The movable rod 49 is made of 304 stainless steel, has a length of 15 cm, and has an anti-corrosion treatment on the surface to ensure durability in long-term use.

[0048] This design effectively protects the internal mechanical components of the device, extending the service life of the device, and ensures that patients and caregivers can easily adjust and maintain the device during use through convenient operation.

[0049] Working principle: First, the lifting base 1 is placed on one side of the bed. According to the fracture position and the length of the patient's lower limbs, the height and angle of the angle adjustment plate 24 are adjusted. First, the bidirectional screw 14 is driven to rotate by the external rotating knob 15, and then the two moving blocks 16 are controlled to move closer to each other and farther away from each other through different thread surfaces, so as to control the angle adaptive mechanism 2 to move up and down through the connecting rod 17. When the two moving blocks 16 are close to each other, the angle adaptive mechanism 2 rises, and vice versa, the angle adaptive mechanism 2 falls to adjust to a suitable height. At the same time, due to the presence of the first spring 28, the elastic bolt 29 always has an upward force , which makes the angle adjustment plate 24 have the force to flip to a larger angle. At the same time, due to the existence of the second spring 37, the slide bar 35 has an outward force. Since the movable sleeve 34 and the slide bar 35 are fixed by bolts, and the bolt tube passes through the open groove on the surface of the fixed cylinder 31, the movable sleeve 34 can move axially with the slide bar 35, but cannot rotate. When there is no force, the movable sleeve 34 is close to the linkage gear 32 to keep the linkage gear 32 fixed through the engagement of the second tooth groove 341 and the first tooth groove 33. At this time, the angle of the angle adjustment plate 24 is fixed through the cooperation of the linkage gear 32 and the arc-shaped gear rod 27.

[0050] Then another person or another lower limb presses the control pressure head 36, which causes the slide bar 35 to move inward. The second spring 37 is squeezed and stores force, causing the second tooth groove 341 to separate from the first tooth groove 33, and the linkage gear 32 can rotate in any direction to place the fractured lower limb on the surface of the ventilation buffer plate 25. At this time, the angle adjustment plate 24 will be pressed downward. At the same time, since the first spring 28 has an upward force, after the lower limb is placed, the angle of the angle adjustment plate 24 is automatically adjusted due to its own weight so that the patient is at the most comfortable angle. After the placement is stable, the pressure on the control pressure head 36 is released, and the second tooth groove 341 re-engages with the first tooth groove 33 to fix the linkage gear 32, so that the angle of the angle adjustment plate 24 remains fixed to achieve an adaptive angle. The operation is convenient and the patient can control it independently. The hollow holes on the surface of the ventilation buffer plate 25 are convenient for local ventilation and heat dissipation of the patient. Then the lower limb is fixed by the strap 26 and the Velcro 261 to prevent secondary injury caused by shaking or falling.

[0051] When the lower limb is raised, the fractured part is ensured to be placed on the ventilation buffer plate 25, and then the position of the foot fixing mechanism 4 is adjusted so that the patient's foot can enter the fitting concave surface 42. The adjustment of the position of the foot fixing mechanism 4 can make the telescopic rod 43 telescope, and after the telescopic length is adjusted, it can be fixed with bolts. Due to the presence of the third spring 412, the limit head 411 has an outward force, and then the wedge block 413 always keeps in mesh with the ratchet 46, so that the foot limit plate 45 can only rotate inward and cannot rotate outward. The foot limit plate 45 is rotated outwardly, and the foot limit plate 45 is moved in turn at this time, so that the foot limit plate 45 limits the two sides of the patient's foot to prevent the foot from shifting. The angle of the foot limit plate 45 can be limited in real time. Conversely, after use, the movable rod 49 can be tightened by the outside to make the wedge block 413 disengage from the ratchet 46. At this time, the foot limit plate 45 can be rotated at any angle, and the operation is convenient. The external sealing cover 48 can seal the open end of the protective box body 47 to protect the internal components.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An orthopedic lower limb lifting pad, comprising a lifting base (1), characterized in that: The lifting base (1) comprises a base body (11) placed on the hospital bed, a guide slope (12) is arranged on the front side of the base body (11), a mounting cavity (13) is provided on the upper surface of the base body (11), and an angle adaptive mechanism (2) is installed on the top of the lifting base (1); The angle self-adapting mechanism (2) comprises a lifting block (21) and an angle adjustment plate (24) which are installed in a lifting manner on the upper part of the installation cavity (13); a mounting bolt (22) is arranged on the front side of the upper surface of the lifting block (21); the angle adjustment plate (24) is placed on the top of the lifting block (21); the front side of the angle adjustment plate (24) is hinged on the mounting bolt (22); a through slot (23) is provided on the rear side of the upper surface of the lifting block (21); an angle fixing mechanism (3) is arranged inside the through slot (23); The angle fixing mechanism (3) is used to lock and fix the angle of the angle adjustment plate (24); The angle adjustment plate (24) is in the form of a U-shaped structure that is open upwards. A ventilation buffer plate (25) is suspended inside the angle adjustment plate (24). Hollow holes are evenly formed on the surface of the ventilation buffer plate (25). The center of the ventilation buffer plate (25) is concave downwards. Both sides of the angle adjustment plate (24) are connected with straps (26). Velcro (261) is glued to the surface of the straps (26). A foot fixing mechanism (4) is telescopically installed at the rear end of the angle adjustment plate (24). The foot fixing mechanism (4) is used to limit the position of the patient's foot. The foot fixing mechanism (4) comprises a baffle (41). A rotating shaft (44) is symmetrically rotatably mounted on the surface of the baffle (41). A foot limiting plate (45) is arranged at the front end of the rotating shaft (44), and a ratchet (46) is mounted at the rear end of the rotating shaft (44). The foot limiting plate (45) and the ratchet (46) are respectively arranged on the front and rear surfaces of the baffle (41). The two foot limiting plates (45) limit the positions of both sides of the patient's foot.

2. The orthopedic lower limb lifting pad according to claim 1, characterized in that: A bidirectional screw (14) is rotatably mounted at the lower part of the installation cavity (13), the rear end of the bidirectional screw (14) protruding from the rear surface of the base body (11), and a knob (15) is provided at the rear end of the bidirectional screw (14). A moving block (16) is symmetrically slidably mounted at the lower part of the installation cavity (13), the two moving blocks (16) are respectively screwed on different thread surfaces of the bidirectional screw (14), the tops of the two moving blocks (16) are hinged with connecting rods (17), and the ends of the two connecting rods (17) facing away from the moving blocks (16) are hinged at the bottom of the lifting block (21).

3. The orthopedic lower limb lifting pad according to claim 1, characterized in that: A mounting bolt (22) is arranged on the front side of the upper surface of the lifting block (21); the angle adjustment plate (24) is placed on the top of the lifting block (21); the front side of the angle adjustment plate (24) is hinged on the mounting bolt (22); an arc-shaped toothed rod (27) is welded on the lower surface of the angle adjustment plate (24); the arc-shaped toothed rod (27) coincides with the center of the mounting bolt (22); and the arc-shaped toothed rod (27) passes through the through slot (23).

4. The orthopedic lower limb lifting pad according to claim 3, characterized in that: The angle fixing mechanism (3) comprises a fixing cylinder (31) fixed transversely to the rear side of the lifting block (21), the fixing cylinder (31) passing through the through slot (23), a linkage gear (32) rotatably mounted on the surface of the fixing cylinder (31), the linkage gear (32) meshing with the arc-shaped gear rod (27), one end of the linkage gear (32) being uniformly provided with a first tooth groove (33) with its center as the center of a circle, a sliding rod (35) being slidably mounted inside the fixing cylinder (31), an open slot being symmetrically provided on the surface of the fixing cylinder (31), a movable sleeve (34) being slidably mounted on the surface of the fixing cylinder (31), a second tooth groove (341) being uniformly provided on one side of the movable sleeve (34) with its center as the center of a circle, the second tooth groove (341) meshing with the first tooth groove (33).

5. The orthopedic lower limb lifting pad according to claim 4, characterized in that: The movable sleeve (34) is mounted on the slide bar (35) by means of bolts, and the bolts penetrate an open groove on the surface of the fixed cylinder (31). A second spring (37) is placed inside the fixed cylinder (31), one end of the second spring (37) is in contact with the end of the slide bar (35), and a control pressure head (36) is provided at the outer end of the second spring (37), and the control pressure head (36) is placed outside the lifting block (21).

6. The orthopedic lower limb lifting pad according to claim 1, characterized in that: Telescopic rods (43) are symmetrically arranged below the front surface of the baffle (41), and the two telescopic rods (43) slide inside the angle adjustment plate (24). The inner walls on both sides of the angle adjustment plate (24) are symmetrically provided with sliding grooves that match the telescopic rods (43), and the front side of the baffle (41) is provided with a fitting concave surface (42) that matches the foot.

7. The orthopedic lower limb lifting pad according to claim 6, characterized in that: A protective box (47) is provided on the rear surface of the baffle (41), the two ratchets (46) are both placed inside the protective box (47), a protrusion (410) is symmetrically provided on the back of the baffle (41), the protrusion (410) is placed between the two ratchets (46), a movable rod (49) is laterally slidably mounted on the surface of the protrusion (410), a limiting head (411) is provided at one end of the two movable rods (49) which are away from each other, a wedge block (413) is provided at the end of the limiting head (411), the wedge block (413) and the ratchet (46) are meshed with each other, and a third spring (412) is sleeved on the surface of the movable rod (49), the third spring (412) is placed between the protrusion (410) and the limiting head (411).

8. The orthopedic lower limb lifting pad according to claim 7, characterized in that: The end of the protective box (47) is open and a sealing cover (48) is installed by bolts. A track groove (481) is transversely opened at the center of the surface of the sealing cover (48). A toggle rod (491) is provided on the side where the two movable rods (49) are close to each other. The two toggle rods (491) both penetrate the track groove (481).

Images