A nursing device for hip-knee arthroplasty postoperative pain relief

Abstract

The application discloses a nursing device capable of effectively relieving postoperative pain after hip-knee joint replacement, and relates to the technical field of orthopedic nursing devices.The application provides a nursing device capable of effectively relieving postoperative pain after hip-knee joint replacement and having a passive motion training function.The nursing device capable of effectively relieving postoperative pain after hip-knee joint replacement comprises a thigh fixing support, and a fixing plate connected to the thigh fixing support; further comprises a shank fixing support, the shank fixing support is rotatably connected to the bottom of the thigh fixing support, a gear plate is connected to the shank fixing support, a straight gear is connected to the shaft, the straight gear is engaged with the gear plate, and a thigh massage mechanism is arranged on the thigh fixing support.The shank fixing support drives the shank to bend for rehabilitation training through cooperation of the straight gear and the gear plate, blood circulation is promoted through the thigh massage mechanism, rehabilitation time is shortened, and treatment efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of orthopedic nursing equipment technology, and in particular to a nursing device for use after hip and knee joint replacement surgery that can effectively relieve postoperative pain. Background Technology

[0002] The hip and knee are joints in the lower limbs. The hip joint is located at the junction of the pelvis and the lower limb, while the knee joint is the junction of the thigh and the lower leg. Both play important roles in lower limb movement. When the hip and knee joints are damaged, injured, or infected, it can lead to conditions such as femoral head necrosis, degenerative hip osteoarthritis, and knee osteoarthritis. In severe cases, total hip or knee replacement surgery can be chosen for treatment.

[0003] After hip and knee replacement surgery, doctors will encourage patients to engage in appropriate exercises based on their recovery progress. Suitable exercise helps the body recover, allowing the knee to adapt to the newly assembled joint as soon as possible. This can effectively alleviate knee stiffness and pain, thereby preventing postoperative thrombosis, joint adhesions, improving knee range of motion, and restoring walking ability.

[0004] However, postoperative joint pain is often severe, and some patients lack the willpower to actively cooperate with doctors in exercising on their own, thus prolonging their recovery time and reducing treatment efficiency. Consequently, they can only rely on nursing equipment for passive exercise training. Summary of the Invention

[0005] To overcome the drawback that patients find it difficult to actively cooperate with doctors in exercising on their own, this invention provides a nursing device with passive exercise training function for use after hip and knee replacement surgery, which can effectively relieve postoperative pain.

[0006] A nursing device for effectively relieving postoperative pain after hip and knee replacement surgery includes a thigh fixation bracket with a fixation plate connected to it; it also includes a lower leg fixation bracket rotatably connected to the bottom of the thigh fixation bracket, with a gear plate connected to the lower leg fixation bracket and rotatably connected to the thigh fixation bracket; at least four first fixation rods are connected to the side of the thigh fixation bracket near the gear plate, and at least two first fixation brackets are connected to the side of the thigh fixation bracket near the gear plate; a rotating shaft is rotatably connected to the side of the thigh fixation bracket near the first fixation rods; a first motor is installed between the two lower first fixation rods; the output shaft of the first motor is connected to a bevel gear via a coupling; another bevel gear is connected to the rotating shaft, and the two bevel gears mesh; a spur gear is connected to the rotating shaft, and the spur gear meshes with the gear plate; a thigh massage mechanism is provided on the side of the thigh fixation bracket away from the fixation plate.

[0007] Preferably, the thigh massage mechanism includes a first connecting plate, and there are at least two first connecting plates. The first connecting plates are symmetrically connected front and back to the side of the thigh fixing bracket away from the calf fixing bracket. The side of the thigh fixing bracket near the calf fixing bracket is symmetrically connected front and back to a concave connecting plate. A drive assembly is provided between the first connecting plate and the concave connecting plate. A first massage frame is connected to the drive assembly. A second motor is installed between the two first fixing rods on the upper side.

[0008] Preferably, the drive assembly includes a first lead screw, and there are at least two first lead screws. The first lead screws are rotatably connected between a first connecting plate and a concave connecting plate that are adjacent to each other. A first transmission belt is wound between the output shaft of the second motor and the first lead screw. A first sliding sleeve is threadedly connected to the first lead screw. A first sliding guide is slidably connected to the first sliding sleeve. A first spring is connected between the first sliding guide and the adjacent first sliding sleeve. The first spring is wound around the adjacent first sliding guide.

[0009] Preferably, the device also includes a fixation assembly for keeping the thigh and lower leg straight when the patient has completed surgery. The fixation assembly includes a second fixation rod, the number of which is at least five. The second fixation rods are connected to a fixation plate, and a fixation sleeve is connected between the second fixation rods. A first fixation block is connected to the side of the thigh fixation bracket near the lower leg fixation bracket. A sliding connecting rod is slidably connected between the first fixation block and the fixation sleeve. A second fixation block is connected to the side of the lower leg fixation bracket near the thigh fixation bracket.

[0010] Preferably, the device also includes a decompression assembly for reducing joint stress when the patient is lying on their side. The decompression assembly includes an air inflator assembly disposed between the first connecting plate and the first sliding sleeve. An airbag is connected to the fixed plate. A connecting box is connected to the side of the fixed plate away from the lower leg fixation bracket. The air inflator assembly is connected to the connecting box. At least six fixing rings are evenly connected to the fixed plate. A sliding plate is slidably connected between the connecting box and the fixing rings. The bottom of the sliding plate is slidably connected to a sliding connecting rod. A circular through hole for air intake is opened on the upper part of the sliding plate.

[0011] Preferably, the air inflator assembly includes a fixed frame connected between the upper sides of the first sliding sleeve, a third fixed rod connected between the first connecting plates, an elastic rubber box connected between the fixed frame and the third fixed rod, an air pipe connected to the elastic rubber box, the air pipe passing through the adjacent first connecting plate and connecting to the connecting box, and a one-way valve installed on the elastic rubber box.

[0012] Preferably, the device also includes a clamping assembly for fixing the calf fixation bracket to the patient's calf. The clamping assembly includes a second connecting plate. At least three second connecting plates are evenly connected circumferentially on the side of the calf fixation bracket away from the thigh fixation bracket. An arc-shaped clamp is slidably connected between the second connecting plate and the calf fixation bracket. At least two second springs are connected between the arc-shaped clamp and the adjacent second connecting plate. The second springs are wound around the adjacent arc-shaped clamp.

[0013] Preferably, the device also includes a calf massage component for massaging the calf muscles. The calf massage component includes an adjustment component, which is disposed on the calf fixation bracket. A second sliding sleeve is symmetrically threaded onto the adjustment component. A second sliding guide is slidably connected to the second sliding sleeve. A third spring is connected between the second sliding guide and the adjacent second sliding sleeve. The third spring is wound around the adjacent second sliding guide. A second massage frame is connected between the second sliding guides.

[0014] Preferably, the adjustment assembly includes a first sliding frame, which is slidably connected to the lower leg fixing bracket. A second sliding frame is slidably connected to the lower leg fixing bracket. A second lead screw is symmetrically rotatably connected between the first sliding frame and the second sliding frame. At least two second fixing brackets are connected to the first sliding frame. A rotating rod is rotatably connected between the second fixing brackets. A second transmission belt is wound between the rotating rod and the second lead screw.

[0015] Preferably, the massage sticks on both the first and second massage frames are made of elastic rubber.

[0016] The present invention has the following advantages: 1. The present invention first uses the cooperation of spur gear and gear plate to make the lower leg fixation bracket drive the lower leg to perform bending rehabilitation training, and then uses the first massage frame to massage the thigh to promote blood return in the leg, which not only prevents the formation of thrombosis, but also relieves the discomfort symptoms of knee joint pain, shortens the rehabilitation time, and improves the treatment efficiency.

[0017] 2. This invention inserts a sliding connecting rod into the second fixing block, preventing the patient's lower leg from bending due to unconscious movements, thus affecting the surgical outcome and improving treatment efficiency.

[0018] 3. This invention reduces pressure on the knee joint when the patient lies on their side by inflating the airbag, which helps the patient recover and improves the nursing effect.

[0019] 4. The present invention uses an arc-shaped splint to fix the lower leg fixation bracket more stably on the lower leg, preventing the lower leg fixation bracket from sliding down during bending rehabilitation training and affecting the training, thus improving treatment efficiency.

[0020] 5. This invention uses a second massage frame to massage the calves, accelerating blood circulation in the calves and improving treatment efficiency. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention.

[0023] Figure 3 This is a three-dimensional structural diagram of the passive training mechanism of the present invention.

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the bevel gear, spur gear, and gear plate of the present invention.

[0025] Figure 5 This is a first-view perspective three-dimensional structural diagram of the thigh massage component of the present invention.

[0026] Figure 6 This is a second-view perspective three-dimensional structural diagram of the thigh massage component of the present invention.

[0027] Figure 7 This is a three-dimensional structural diagram of the fixing component of the present invention.

[0028] Figure 8 This is a three-dimensional structural diagram of the fixed sleeve, sliding connecting rod, and first fixed block of the present invention.

[0029] Figure 9 This is a first-view three-dimensional structural diagram of the pressure-reducing component of the present invention.

[0030] Figure 10 This is a second-view three-dimensional structural diagram of the pressure-reducing component of the present invention.

[0031] Figure 11 This is a three-dimensional structural diagram of the clamping assembly of the present invention.

[0032] Figure 12 This is a three-dimensional structural diagram of the second connecting plate, the arc-shaped clamping plate, and the second spring of the present invention.

[0033] Figure 13 This is a first-view perspective three-dimensional structural diagram of the calf massage component of the present invention.

[0034] Figure 14 This is a second-view perspective three-dimensional structural diagram of the calf massage component of the present invention.

[0035] Figure 15 This is a three-dimensional structural diagram of the second sliding sleeve and the second massage frame of the present invention.

[0036] Explanation of reference numerals in the attached drawings: 1_Thigh fixation bracket, 2_Fixing plate, 31_Lower leg fixation bracket, 32_First fixing rod, 33_First fixing bracket, 34_Rotating shaft, 35_First motor, 36_Bevel gear, 37_Spur gear, 38_Gear plate, 41_First connecting plate, 42_First lead screw, 43_First transmission belt, 44_First sliding sleeve, 45_First sliding guide frame, 46_First massage frame, 47_First spring, 48_Concave connecting plate, 49_Second motor, 51_Second fixing rod, 52_Fixing sleeve, 53_Sliding connecting rod, 54_ 55_Second fixed block, 61_Fixed frame, 62_Third fixed rod, 63_Elastic rubber box, 64_Air tube, 65_Airbag, 66_Fixed ring, 67_Sliding plate, 68_Connecting box, 69_One-way valve, 71_Second connecting plate, 72_Arc-shaped clamp, 73_Second spring, 81_First sliding frame, 82_Second sliding frame, 83_Second lead screw, 84_Second sliding sleeve, 85_Second sliding guide frame, 86_Third spring, 87_Second massage frame, 88_Second fixed bracket, 89_Rotating rod, 810_Second transmission belt. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0038] Example 1: A nursing device for effectively relieving postoperative pain after hip and knee replacement surgery, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the device includes a thigh fixation bracket 1, with a fixing plate 2 connected to the left side of the thigh fixation bracket 1; it also includes a calf fixation bracket 31, which is rotatably connected to the lower left part of the thigh fixation bracket 1. A gear plate 38 is connected to the upper right side of the calf fixation bracket 31, and the gear plate 38 is rotatably connected to the lower right part of the thigh fixation bracket 1. At least four first fixing rods 32 are connected to the lower right part of the thigh fixation bracket 1, and at least two first fixing brackets 33 are connected to the lower right part of the thigh fixation bracket 1. A rotating shaft 34 is rotatably connected to the lower right part of the thigh fixation bracket 1. A first motor 35 is installed between the two lower first fixing rods 32. The output shaft of the first motor 35 is connected to a bevel gear 36 through a coupling. Another bevel gear 36 is connected to the right side of the rotating shaft 34, and the two bevel gears 36 mesh. A spur gear 37 is connected to the left side of the rotating shaft 34, and the spur gear 37 meshes with the gear plate 38. A thigh massage mechanism is provided on the right side of the thigh fixation bracket 1.

[0039] like Figure 1 , Figure 5 and Figure 6As shown, the thigh massage mechanism includes a first connecting plate 41, and there are two first connecting plates 41. The first connecting plates 41 are respectively connected to the front and rear parts of the upper right side of the thigh fixing bracket 1. The lower right side of the thigh fixing bracket 1 is symmetrically connected with concave connecting plates 48. A drive assembly is provided between the first connecting plate 41 and the concave connecting plate 48. A first massage frame 46 is connected to the drive assembly. A second motor 49 is installed between the two first fixing rods 32 on the upper side.

[0040] like Figure 5 and Figure 6 As shown, the drive assembly includes two first lead screws 42. One first lead screw 42 is rotatably connected between the front first connecting plate 41 and the front concave connecting plate 48, and the other first lead screw 42 is rotatably connected between the rear first connecting plate 41 and the rear concave connecting plate 48. A first transmission belt 43 is wound between the output shaft of the second motor 49 and the first lead screw 42. A first sliding sleeve 44 is threadedly connected to the first lead screw 42. A first sliding guide frame 45 is slidably connected to the first sliding sleeve 44. A first spring 47 is connected between the right side of the first sliding guide frame 45 and the adjacent first sliding sleeve 44. The first spring 47 is wound around the adjacent first sliding guide frame 45.

[0041] When using this device, medical staff first put it on the patient's leg, so that the thigh fixation bracket 1 and the calf fixation bracket 31 are respectively put on the thigh and calf. When the patient's leg needs to be bent for rehabilitation training after surgery, the first motor 35 is started. The output shaft of the first motor 35 drives the bevel gear 36 to rotate, which in turn drives the rotating shaft 34 to rotate. Then, through the spur gear 37, the gear plate 38, the calf fixation bracket 31 and the calf rotate back and forth, allowing the patient's leg to be bent for training, so that the patient can recover earlier. When the training is over, the first motor 35 is turned off.

[0042] When the patient needs to relax their thigh muscles after training, the second motor 49 can be activated to control the rotation of its output shaft. This rotation, via the first transmission belt 43, will drive the first lead screw 42 to rotate, which in turn will drive the first sliding sleeve 44, the first sliding guide frame 45, and the first massage frame 46 to move up and down. Since the thigh is thicker at the top and thinner at the bottom, when the first massage frame 46 contacts the thicker part of the thigh, the leg will also relatively compress the first massage frame 46, causing it to move the first sliding guide frame 45 to the right. The first spring 47 will deform. When the first massage frame 46 contacts the thinner part of the thigh, under the elastic action of the first spring 47, the first sliding guide frame 45 will drive the first massage frame 46 to move to the left to tap the thigh. As the first sliding sleeve 44 moves up and down, it will drive the first massage frame 46 to move up and down while simultaneously moving back and forth left and right. The first massage frame 46 will massage the patient's thigh, promoting blood flow and preventing thrombosis. After the massage is finished, the second motor 49 can be turned off.

[0043] In summary, the spur gear 37 and gear plate 38 work together to enable the lower leg fixation bracket 31 to drive the lower leg to perform flexion rehabilitation training. Then, the first massage frame 46 massages the thigh to promote blood flow in the leg, which not only prevents the formation of blood clots but also relieves the discomfort symptoms of knee pain, shortens the rehabilitation time, and improves the treatment efficiency.

[0044] Example 2: Based on Example 1, such as Figure 1 , Figure 7 and Figure 8 As shown, it also includes a fixation component for keeping the thigh and lower leg straight when the patient has completed surgery. The fixation component includes a second fixation rod 51, and there are at least five second fixation rods 51. The second fixation rods 51 are respectively connected to the lower rear side of the fixation plate 2. A fixation sleeve 52 is connected between the second fixation rods 51. A first fixation block 54 is connected to the lower left part of the thigh fixation bracket 1. A sliding connecting rod 53 is slidably connected between the first fixation block 54 and the fixation sleeve 52. A second fixation block 55 is connected to the upper left part of the lower leg fixation bracket 31. When the thigh fixation bracket 1 and the lower leg fixation bracket 31 are rotated to be in line, the sliding connecting rod 53 is pushed down to insert it into the second fixation block 55.

[0045] Patients can generally begin rehabilitation training on the third day after surgery. Before that, it's best to keep the lower leg straight, avoiding bending it. The specific procedure is as follows: When the nursing device is on the patient's leg, start the first motor 35. The output shaft of the first motor 35 drives the bevel gear 36 to rotate, which in turn drives the gear plate 38, the lower leg fixation bracket 31, the second fixation block 55, and the lower leg to rotate via the spur gear 37. When the lower leg fixation bracket 31 and the thigh fixation bracket 1 are in a straight line, turn off the first motor 35. At this point, the second fixation block 55 will also be in a straight line with the first fixation block 54. Then, the medical staff can slide the sliding rod 53 downwards to insert it into the second fixation block 55. When the patient can begin bending rehabilitation training, slide the sliding rod 53 upwards to return it to its original position. In summary, by inserting the sliding rod 53 into the second fixation block 55, the patient's lower leg will not bend due to unconscious movements, thus affecting the surgical outcome and improving treatment efficiency.

[0046] like Figure 1 , Figure 9 and Figure 10 As shown, it also includes a decompression assembly for reducing joint burden when the patient lies on their side. The decompression assembly includes an air pump assembly, which is disposed between the first connecting plate 41 and the first sliding sleeve 44. An airbag 65 is connected to the left side of the fixed plate 2, and a connecting box 68 is connected to the upper front side of the fixed plate 2. The air pump assembly is connected to the connecting box 68. At least six fixing rings 66 are evenly connected to the front side of the fixed plate 2. A sliding plate 67 is slidably connected between the connecting box 68 and the fixing rings 66. The lower part of the sliding plate 67 is slidably connected to the sliding connecting rod 53. A circular through hole for air intake is opened on the upper part of the sliding plate 67.

[0047] like Figure 9 and Figure 10 As shown, the air inflator assembly includes a fixed frame 61, which is connected to the upper side of the first sliding sleeve 44. A third fixed rod 62 is connected between the first connecting plates 41. An elastic rubber box 63 is connected between the fixed frame 61 and the third fixed rod 62. An air pipe 64 is connected to the upper side of the front wall of the elastic rubber box 63. The air pipe 64 passes through the first connecting plate 41 on the front side and connects to the right wall of the connecting box 68. A one-way valve 69 is installed on the front side of the lower part of the elastic rubber box 63.

[0048] When a patient wants to lie on their side, to reduce pressure on the knee joint, the specific operation is as follows: Initially, the lower leg fixation bracket 31 and the thigh fixation bracket 1 are in a straight line. When the medical staff pushes the sliding connecting rod 53 downward to insert it into the second fixation block 55, it will drive the sliding plate 67 to move downward. The circular through hole of the sliding plate 67 will align with the air outlet of the trachea 64. When the first sliding sleeve 44 moves up and down, it will drive the fixation frame 61 to move up and down. When the fixation frame 61 moves upward, it will squeeze the elastic rubber box 63, increasing its internal pressure, and the one-way valve 69 will close, allowing external air to pass through the one-way valve 69. 9. The air enters the elastic rubber box 63, and then the air in the elastic rubber box 63 enters the air bag 65 through the air tube 64. When the fixing frame 61 moves downward, it will stretch the elastic rubber box 63, and the one-way valve 69 will open. As the elastic rubber box 63 performs compression and stretching reciprocating motion, similar to the working principle of an air pump, external air will fill the air bag 65 and make it inflate. When the massage is over, the elastic rubber box 63 will no longer inflate the air bag 65. In summary, by inflating the air bag 65, the pressure on the knee joint can be reduced when the patient is lying on their side, which helps the patient recover and improves the nursing effect.

[0049] like Figure 1 , Figure 11 and Figure 12 As shown, it also includes a clamping assembly for fixing the lower leg fixation bracket 31 to the patient's lower leg. The clamping assembly includes a second connecting plate 71, and the number of the second connecting plates 71 is at least three. The second connecting plates 71 are evenly connected to the lower outer side of the lower leg fixation bracket 31 in the circumferential direction. An arc-shaped clamping plate 72 is slidably connected between the second connecting plate 71 and the lower leg fixation bracket 31. At least two second springs 73 are connected between the arc-shaped clamping plate 72 and the adjacent second connecting plate 71. The second springs 73 are wound around the adjacent arc-shaped clamping plate 72.

[0050] When the device is placed on the patient's leg, to prevent the lower leg fixation bracket 31 from slipping down and affecting rehabilitation training, the specific operation is as follows: When the lower leg fixation bracket 31 is placed on the patient's lower leg, the lower leg will compress the arc-shaped splint 72, causing it to move outward. The second spring 73 will deform, and at this time, the lower leg fixation bracket 31 will be fixed to the lower leg by the arc-shaped splint 72. When the lower leg fixation bracket 31 is removed from the lower leg, under the elastic action of the second spring 73, the second connecting plate 71 moves inward and resets. In summary, the arc-shaped splint 72 makes the lower leg fixation bracket 31 more stably fixed to the lower leg, preventing the lower leg fixation bracket 31 from slipping down and affecting the training during bending rehabilitation training, thus improving treatment efficiency.

[0051] like Figure 1 , Figure 13 , Figure 14 and Figure 15As shown, it also includes a calf massage component for massaging calf muscles. The calf massage component includes an adjustment component, which is set on the calf fixation bracket 31. The adjustment component is symmetrically threaded with a second sliding sleeve 84. A second sliding guide frame 85 is slidably connected to the second sliding sleeve 84. A third spring 86 is connected between the second sliding guide frame 85 and the adjacent second sliding sleeve 84. The third spring 86 is wound around the adjacent second sliding guide frame 85. A second massage frame 87 is connected between the left sides of the second sliding guide frame 85. The massage sticks on the first massage frame 46 and the second massage frame 87 are both made of elastic rubber.

[0052] like Figure 13 and Figure 14 As shown, the adjustment assembly includes a first sliding frame 81, which is slidably connected to the upper part of the lower leg fixing bracket 31. A second sliding frame 82 is slidably connected to the lower part of the lower leg fixing bracket 31. A second lead screw 83 is rotatably connected between the front side of the first sliding frame 81 and the front side of the second sliding frame 82. Another second lead screw 83 is rotatably connected between the rear side of the first sliding frame 81 and the rear side of the second sliding frame 82. At least two second fixing brackets 88 are connected to the middle of the first sliding frame 81. A rotating rod 89 is rotatably connected between the second fixing brackets 88. A second transmission belt 810 is wound between the rotating rod 89 and the upper part of the second lead screw 83.

[0053] When the patient needs to relax their calf muscles after training, the specific operation is as follows: Medical staff can turn the rotating rod 89, which will drive the second lead screw 83 to rotate through the second transmission belt 810, thereby driving the second sliding sleeve 84, the second sliding guide frame 85, and the second massage frame 87 to move up and down. The up-and-down movement of the second massage frame 87 will massage the calf. Similarly, since the calf is also thicker at the top and thinner at the bottom, the third spring 86 will continuously deform and return to its original position during the up-and-down movement of the second massage frame 87. The second massage frame 87 will massage while moving up and down and back and forth left and right. When it is necessary to adjust the massage position, the first sliding frame 81 and the second sliding frame 82 can be rotated along the calf fixing bracket 31. In summary, massaging the calf with the second massage frame 87 can accelerate blood circulation in the calf and improve treatment efficiency.

[0054] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. All equivalent substitutions made within the principles of the present invention should be included within the scope of protection of the present invention. Contents not described in detail in this invention are existing technologies known to those skilled in the art.

Claims

1. A nursing device for effectively relieving postoperative pain after hip and knee replacement surgery, comprising a thigh fixation bracket (1) and a fixation plate (2) connected to the thigh fixation bracket (1); characterized in that, It also includes a calf fixation bracket (31), which is rotatably connected to the bottom of the thigh fixation bracket (1). A gear plate (38) is connected to the calf fixation bracket (31), and the gear plate (38) is rotatably connected to the thigh fixation bracket (1). At least four first fixing rods (32) are connected to the side of the thigh fixation bracket (1) near the gear plate (38), and at least two first fixing brackets (33) are connected to the side of the thigh fixation bracket (1) near the gear plate (38). A rotating shaft (34) is rotatably connected to one side of the fixed rod (32). A first motor (35) is installed between the two first fixed rods (32) on the lower side. The output shaft of the first motor (35) is connected to a bevel gear (36) through a coupling. Another bevel gear (36) is connected to the rotating shaft (34). The two bevel gears (36) mesh. A spur gear (37) is connected to the rotating shaft (34). The spur gear (37) meshes with the gear plate (38). A thigh massage mechanism is provided on the side of the thigh fixing bracket (1) away from the fixing plate (2). The thigh massage mechanism includes a first connecting plate (41), there are at least two first connecting plates (41), the first connecting plates (41) are symmetrically connected front and back to the side of the thigh fixing bracket (1) away from the calf fixing bracket (31), the thigh fixing bracket (1) is symmetrically connected front and back to the side of the calf fixing bracket (31), a concave connecting plate (48) is provided between the first connecting plate (41) and the concave connecting plate (48), a first massage frame (46) is connected to the driving component, and a second motor (49) is installed between the two first fixing rods (32) on the upper side. The drive assembly includes a first lead screw (42), and there are at least two first lead screws (42). The first lead screws (42) are rotatably connected between a first connecting plate (41) and a concave connecting plate (48) that are adjacent to each other. A first transmission belt (43) is wound between the output shaft of the second motor (49) and the first lead screw (42). A first sliding sleeve (44) is threadedly connected to the first lead screw (42). A first sliding guide frame (45) is slidably connected to the first sliding sleeve (44). A first spring (47) is connected between the first sliding guide frame (45) and the adjacent first sliding sleeve (44). The first spring (47) is wound around the adjacent first sliding guide frame (45). It also includes a decompression assembly for reducing joint stress when the patient is lying on their side. The decompression assembly includes an air pump assembly that supplies air to the decompression assembly through an air tube. The air pump assembly is located between the first connecting plate (41) and the first sliding sleeve (44). An airbag (65) is connected to the fixing plate (2). A connecting box (68) is connected to the side of the fixing plate (2) away from the lower leg fixation bracket (31). The air pump assembly is connected to the connecting box (68). At least six fixing rings (66) are evenly connected to the fixing plate (2). A sliding plate (67) is slidably connected between the connecting box (68) and the fixing ring (66). The bottom of the sliding plate (67) is slidably connected to the sliding connecting rod (53). A circular through hole for air intake is opened on the upper part of the sliding plate (67). When the sliding connecting rod (53) is slid down, it drives the sliding plate (67) to move down. The circular through hole of the sliding plate (67) is aligned with the outlet of the air pipe (64). The air pumping component is linked to the up and down reciprocating motion of the first sliding sleeve (44) to realize the air pumping into the airbag (65).

2. The nursing device for effectively relieving postoperative pain after hip and knee joint replacement surgery according to claim 1, characterized in that, It also includes a fixation assembly for keeping the thigh and lower leg straight when the patient has completed surgery. The fixation assembly includes a second fixation rod (51), the number of which is at least five. The second fixation rods (51) are connected to the fixation plate (2). Fixation sleeves (52) are connected between the second fixation rods (51). A first fixation block (54) is connected to the side of the thigh fixation bracket (1) near the lower leg fixation bracket (31). A sliding connecting rod (53) is slidably connected between the first fixation block (54) and the fixation sleeve (52). A second fixation block (55) is connected to the side of the lower leg fixation bracket (31) near the thigh fixation bracket (1).

3. The nursing device for effectively relieving postoperative pain after hip and knee joint replacement surgery according to claim 2, characterized in that, The air-inflating assembly includes a fixed frame (61) connected between the upper sides of the first sliding sleeve (44), a third fixed rod (62) connected between the first connecting plates (41), an elastic rubber box (63) connected between the fixed frame (61) and the third fixed rod (62), an air pipe (64) connected to the elastic rubber box (63), the air pipe (64) passing through the adjacent first connecting plate (41) and connecting box (68), and a one-way valve (69) installed on the elastic rubber box (63).

4. The nursing device for effectively relieving postoperative pain after hip and knee joint replacement surgery according to claim 3, characterized in that, It also includes a clamping assembly for fixing the lower leg fixation bracket (31) to the patient's lower leg. The clamping assembly includes a second connecting plate (71). At least three second connecting plates (71) are evenly connected circumferentially on the side of the lower leg fixation bracket (31) away from the thigh fixation bracket (1). An arc-shaped clamp (72) is slidably connected between the second connecting plate (71) and the lower leg fixation bracket (31). At least two second springs (73) are connected between the arc-shaped clamp (72) and the adjacent second connecting plate (71). The second springs (73) are wound around the adjacent arc-shaped clamp (72).

5. A nursing device for effectively relieving postoperative pain after hip and knee joint replacement surgery according to claim 4, characterized in that, It also includes a calf massage component for massaging the calf muscles. The calf massage component includes an adjustment component, which is set on the calf fixation bracket (31). The adjustment component is connected to a second sliding sleeve (84) with symmetrical front and rear threads. The second sliding sleeve (84) is slidably connected to a second sliding guide frame (85). A third spring (86) is connected between the second sliding guide frame (85) and the adjacent second sliding sleeve (84). The third spring (86) is wound around the adjacent second sliding guide frame (85). A second massage frame (87) is connected between the second sliding guide frames (85).

6. The nursing device for effectively relieving postoperative pain after hip and knee joint replacement surgery according to claim 5, characterized in that, The adjustment assembly includes a first sliding frame (81), which is slidably connected to the lower leg fixing bracket (31). A second sliding frame (82) is slidably connected to the lower leg fixing bracket (31). A second lead screw (83) is symmetrically rotatably connected between the first sliding frame (81) and the second sliding frame (82). At least two second fixing brackets (88) are connected to the first sliding frame (81). A rotating rod (89) is rotatably connected between the second fixing brackets (88). A second transmission belt (810) is wound between the rotating rod (89) and the second lead screw (83).

7. A nursing device for effectively relieving postoperative pain after hip and knee joint replacement surgery according to claim 6, characterized in that, The massage sticks on the first massage frame (46) and the second massage frame (87) are both made of elastic rubber.

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