Neurological rehabilitation training device
Patent Information
- Application Number
- CN202311699334.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-12
- Publication Date
- 2026-10-20
AI Technical Summary
[0003]神经内科患者大多伴有肢体不灵敏或偏瘫症状,适当的进行康复训练可以降低疾病带来的后遗症,保持机体的正常机能,为了增强患者康复训练的治疗效果,需要通过对患者手臂的锻炼提高康复效果,而目前的康复训练装置大多是主要对患者的手臂进行训练,而对手腕和手指等则不能够有效训练到,这样容易使得手腕和手指的机动能力无法有效提高,进而不能够较全面地对患者进行整体的康复训练,从而影响患者康复训练的整体恢复效果
[0013]本发明具有以下优点:1、本发明中,电机驱动传动齿轮转动,传动齿轮转动会带动弯齿条转动,弯齿条转动会带动双面凹板向上摆动,双面凹板向上摆动会带动患者手臂、两个支撑转杆架、两个支撑弯杆、软带环和两个导向弯杆一起向上摆动,接着弯齿条反向转动会带动双面凹板向下摆动,双面凹板向下摆动会带动患者手臂、两个支撑转杆架、两个支撑弯杆、软带环和两个导向弯杆一起向下摆动,重复如此,进而辅助患者进行手臂的摆动训练,能够有效增加患者手臂的活动度,减少肌肉萎缩,从而提高中枢神经系统的可塑性,促使患者提高康复训练的效果。
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Abstract
Description
Technical Field
[0001] This invention relates to the field of medical devices, and more particularly to a neurological rehabilitation training device. Background Technology
[0002] Neurology is an independent sub-discipline and is not part of the internal medicine concept. The nervous system consists of the brain, spinal cord, and peripheral nerves. It mainly diagnoses and treats myelitis, dementia, neurodegenerative diseases, sciatica, peripheral neuropathy, and myasthenia gravis. Neurological rehabilitation treatment includes many aspects, and currently, rehabilitation training therapies mainly include physical therapy, occupational therapy, speech therapy, psychotherapy, rehabilitation engineering, and traditional Chinese medicine therapies.
[0003] Most neurological patients also experience limb weakness or hemiplegia. Appropriate rehabilitation training can reduce the sequelae of the disease and maintain normal bodily functions. To enhance the therapeutic effect of rehabilitation training, it is necessary to improve the rehabilitation effect by exercising the patient's arms. However, most current rehabilitation training devices mainly train the patient's arms, while failing to effectively train the wrists and fingers. This can easily lead to an inability to effectively improve the mobility of the wrists and fingers, thus failing to provide a comprehensive overall rehabilitation training for the patient and affecting the overall recovery effect of the rehabilitation training. Summary of the Invention
[0004] To overcome the above-mentioned shortcomings, the present invention provides a neurological rehabilitation training device that prevents muscle atrophy in the patient's arms by enhancing the range of motion of the patient's arms, wrists and fingers, and provides the patient with more thorough exercise, thereby maintaining the patient's normal physical function and enhancing the therapeutic effect of rehabilitation training.
[0005] The technical solution is as follows: A neurological rehabilitation training device includes supporting legs, a bed board, a support plate, a hand fixation mechanism, and a swing arm mechanism. A bed board is fixedly connected between the tops of the two supporting legs. The bed board is used for the patient to lie flat. Support plates are fixedly connected to both sides of the bed board. The support plates are provided with a hand fixation mechanism and a swing arm mechanism.
[0006] Optionally, the hand fixing mechanism includes a double-sided concave plate, a support rotating rod frame, a torsion spring, a support bent rod, a tension spring, and a soft belt ring. A double-sided concave plate is placed on the upper surface of each support plate. A support rotating rod frame is slidably connected to both sides of each double-sided concave plate. A torsion spring is connected between each support rotating rod frame and the double-sided concave plate. A support bent rod is slidably connected to each support rotating rod frame. A tension spring is connected between the support bent rod and the support rotating rod frame. A soft belt ring is fixedly connected between two adjacent support bent rods.
[0007] Optionally, the swing arm mechanism includes a motor, a transmission gear, a rack and a guide rod. A motor is fixedly connected to each support plate, a transmission gear is fixedly connected to the output shaft of each motor, a rack is fixedly connected to one side of each double-sided concave plate, two racks pass through the support plate, the transmission gear meshes with the rack, and two guide rods are fixedly connected to the side of each double-sided concave plate, each guide rod being slidably connected to the support plate.
[0008] Optionally, it also includes a wrist swing mechanism, which is mounted on a support plate. The wrist swing mechanism includes a support groove plate, a guide support frame, a support round head plate, a telescopic spring, a fixed gear, a support round rod, and a rotating gear. A support groove plate is fixedly connected to the side of each support plate, a guide support frame is slidably connected to each support groove plate, a support round head plate is slidably connected to each guide support frame, and a telescopic spring connects the support round head plate and the guide support frame. A support round rod is fixedly connected to the side of each double-sided concave plate away from the guide curved rod, a fixed gear is rotatably connected to each support round rod, and a rotating gear is fixedly connected to each support rotating rod frame. The fixed gear meshes with the rotating gear.
[0009] Optionally, it also includes a finger-spreading mechanism, which is disposed on a double-sided concave plate. The finger-spreading mechanism includes an arc-shaped baffle, a support bracket, a push plate, a buffer spring, and a round-headed pull rod. Two arc-shaped baffles are fixedly connected to each double-sided concave plate. A support bracket is fixedly connected between two adjacent support rods. Two push plates are fixedly connected in the middle of each support bracket. Two round-headed pull rods are slidably connected to each support bracket. A buffer spring is connected between the round-headed pull rod and the push plate.
[0010] Optionally, two of the arc-shaped baffles on the same double-sided concave plate are grouped together, and the spacing between the arc-shaped baffles in each group gradually increases from both sides to the middle, and they are arranged at an angle.
[0011] Optionally, it also includes sliding bends, pressure springs, and restraining straps. Each of the double-sided concave plates is slidably connected to two sliding bends, and each sliding bend is connected to the double-sided concave plate with a pressure spring. A restraining strap is connected between two adjacent sliding bends.
[0012] Optionally, it also includes support bends and elastic pressure bands, with two support bends fixedly connected to each support bracket, and an elastic pressure band connecting two adjacent support bends.
[0013] This invention has the following advantages: 1. In this invention, the motor drives the transmission gear to rotate, which in turn drives the rack to rotate. The rack's rotation causes the double-sided concave plate to swing upwards. This upward swing of the double-sided concave plate causes the patient's arm, two supporting rotating rod frames, two supporting curved rods, the soft belt loop, and two guide curved rods to swing upwards together. Then, the rack rotates in the opposite direction, causing the double-sided concave plate to swing downwards. This downward swing of the double-sided concave plate causes the patient's arm, two supporting rotating rod frames, two supporting curved rods, the soft belt loop, and two guide curved rods to swing downwards together. This process is repeated, thereby assisting the patient in arm swinging training, effectively increasing the patient's arm mobility, reducing muscle atrophy, and thus improving the plasticity of the central nervous system, promoting better rehabilitation training results.
[0014] 2. In this invention, the upward swing of the double-sided concave plate will cause the supporting round rod, the fixed gear, and the rotating gear to swing upward together. The upward swing of the fixed gear will cause the supporting round head plate to move, which in turn will cause the rotating gear to rotate and drive the supporting rotating rod frame to rotate. The rotation of the supporting rotating rod frame will cause the wrist to swing upward. If the double-sided concave plate swings downward, it will cause the rotating gear to rotate in the opposite direction and cause the wrist to rotate in the opposite direction. This process is repeated, thereby causing the wrist to swing up and down and continuously maintaining the range of motion of the wrist muscles, avoiding edema in the acute phase, and restoring normal strength and range of motion of the hand as soon as possible, thereby improving the rehabilitation training effect of the patient's wrist.
[0015] 3. In this invention, the patient interlaces the four fingers inserted into the soft band. The upward rotation of the two supporting curved rods causes the two round-headed pull rods to rotate upwards together. The upward rotation of the round-headed pull rods moves them along the curved baffle towards the opposite side, and pushes the middle and little fingers towards the opposite side via a push plate. When the two supporting curved rods rotate downwards, they cause the two round-headed pull rods to rotate downwards together. At this time, the buffer spring causes the two round-headed pull rods to move in the opposite direction. The reverse movement of the two round-headed pull rods no longer pushes the fingers, and the fingers will automatically return to their original position. This process is repeated, allowing the fingers to open and close alternately, increasing finger mobility, training the muscles in the fingers, promoting finger recovery, enhancing the patient's physical activity, and improving the rehabilitation training effect of the patient's fingers. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0017] Figure 2 This is a partial three-dimensional structural diagram of the hand fixing mechanism and the swing arm mechanism of the present invention.
[0018] Figure 3 This is a schematic diagram of the first partial three-dimensional structure of the present invention.
[0019] Figure 4 For the present invention Figure 3 A magnified three-dimensional structural diagram of A in the middle.
[0020] Figure 5 This is a schematic diagram of the second partial three-dimensional structure of the present invention.
[0021] Figure 6 For the present invention Figure 5 A magnified three-dimensional structural diagram of B.
[0022] The markings in the attached diagram are: 1-support leg, 2-bed board, 3-support plate, 41-double-sided concave plate, 42-support rotating rod frame, 43-torsion spring, 44-support bent rod, 45-tension spring, 46-soft belt ring, 51-motor, 52-transmission gear, 53-bent rack, 54-guide bent rod, 61-support groove plate, 62-guide support frame, 63-support round head plate, 64-telescopic spring, 65-fixed gear, 66-support round rod, 67-rotating gear, 71-arc baffle, 72-support bracket, 73-push plate, 74-buffer spring, 75-round head pull rod, 81-sliding bent rod, 82-compression spring, 83-restraining soft belt, 91-support bent plate, 92-elastic pressure belt. Detailed Implementation
[0023] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, welding, and bonding that are mature in the prior art, and will not be described in detail here.
[0024] Example 1: A neurological rehabilitation training device, such as Figures 1-6 As shown, it includes support legs 1, bed board 2, support plate 3, hand fixing mechanism and swing arm mechanism. The bed board 2 is bolted between the tops of the two support legs 1. The bed board 2 is used for the patient to lie flat. The support plate 3 is bolted to both sides of the bed board 2. The support plate 3 is provided with hand fixing mechanism and swing arm mechanism. The hand fixing mechanism can flexibly limit the patient's two arms. The swing arm mechanism can drive the patient's arms to swing up and down.
[0025] The hand fixation mechanism includes a double-sided concave plate 41, a support rotating rod frame 42, a torsion spring 43, a support bent rod 44, a tension spring 45, and a soft band ring 46. A double-sided concave plate 41 is placed on the upper surface of each support plate 3. A support rotating rod frame 42 is slidably connected to both sides of each double-sided concave plate 41. Two support rotating rod frames 42 are symmetrically arranged. A torsion spring 43 is connected between each support rotating rod frame 42 and the double-sided concave plate 41. The torsion spring 43 is sleeved on the support rotating rod frame 42. A support bent rod 44 is slidably connected to each support rotating rod frame 42. A tension spring 45 is connected between the support bent rod 44 and the support rotating rod frame 42. The tension spring 45 is sleeved on the support rotating rod frame 42. A soft band ring 46 is adhered between two adjacent support bent rods 44. The soft band ring 46 provides support for the patient's palm.
[0026] The swing arm mechanism includes a motor 51, a transmission gear 52, a rack 53, and guide rods 54. Each support plate 3 is bolted to a motor 51, and the output shaft of each motor 51 is keyed to a transmission gear 52. One side of each double-sided concave plate 41 is bolted to a rack 53, and both racks 53 pass through the support plate 3. The transmission gear 52 meshes with the rack 53. Two guide rods 54 are bolted to the side of each double-sided concave plate 41, and each guide rod 54 is slidably connected to the support plate 3.
[0027] The patient first lies supine on the bed board 2 with arms outstretched, placing both arms on the double-sided concave plates 41, with the thumb separated from the other four fingers. The thumb protrudes outside the soft band ring 46, with the thumb socket pressed against the soft band ring 46, and the other four fingers passing through the soft band ring 46. If the patient's arms are long, extending both arms will push the two soft band rings 46 to move away from each other. The movement of the soft band rings 46 will cause the two supporting curved rods 44 to move together, stretching the tension spring 45. After the patient is in the correct position, the staff starts the motor 51. The output shaft of the motor 51 rotates, which drives the transmission gear 52 to rotate. The rotation of the transmission gear 52 drives the curved rack 53 to rotate. The rotation of the curved rack 53 causes the double-sided concave plates 41 to swing upward. The upward swing of the double-sided concave plates 41 will move the patient's arms, the two supporting rotating rod frames 42, the two supporting curved rods 44, and the soft band rings. The double-sided concave plate 41 swings upward together with the two guide rods 54. After the double-sided concave plate 41 swings to 90 degrees, the output shaft of the motor 51 rotates in the opposite direction, which drives the transmission gear 52 to rotate in the opposite direction. The reverse rotation of the transmission gear 52 drives the rack 53 to rotate in the opposite direction. The reverse rotation of the rack 53 drives the double-sided concave plate 41 to swing downward. The downward swing of the double-sided concave plate 41 drives the patient's arm, the two support rod frames 42, the two support rods 44, the soft belt ring 46, and the two guide rods 54 to swing downward together. This process is repeated to assist the patient in arm swinging training, which can effectively increase the range of motion of the patient's arm, reduce muscle atrophy, and thus improve the plasticity of the central nervous system, thereby promoting the patient's rehabilitation training effect. When the patient has completed the rehabilitation training, he can retract his arm and disengage from the soft belt ring 46, and then get off the bed board 2.
[0028] Example 2: Based on Example 1, such as Figures 5-6 As shown, it also includes a wrist swing mechanism, which is mounted on the support plate 3. The wrist swing mechanism can drive the patient's wrist to swing up and down. The wrist swing mechanism includes a support groove plate 61, a guide support frame 62, a support round head plate 63, a telescopic spring 64, a fixed gear 65, a support round rod 66, and a rotating gear 67. Each support plate 3 has a support groove plate 61 bolted to its side. Each support groove plate 61 has a guide support frame 62 slidably connected to its side. Each guide support frame 62 has a support round head plate 63 slidably connected to its side. A telescopic spring 64 connects the support round head plate 63 and the guide support frame 62. Each double-sided concave plate 41 has a support round rod 66 bolted to its side away from the guide curved rod 54. Each support round rod 66 has a fixed gear 65 rotatably connected to its side. Each support rotating rod frame 42 has a rotating gear 67 connected to its side via a flat key. The fixed gear 65 meshes with the rotating gear 67.
[0029] The upward swing of the double-sided concave plate 41 causes the supporting round rod 66, the fixed gear 65, and the rotating gear 67 to swing upward together. The upward swing of the fixed gear 65 causes the supporting round head plate 63 to move along the supporting groove plate 61, and at the same time, it causes the supporting round head plate 63 to move upward along the guide support frame 62. The telescopic spring 64 is stretched. Since the fixed gear 65 does not rotate, but the double-sided concave plate 41 causes the rotating gear 67 to rotate, which in turn causes the rotating gear 67 to rotate. The rotation of the rotating gear 67 causes the supporting rotating rod frame 42 to rotate, and the torsion spring 43 is torsionped. The rotation of the supporting rotating rod frame 42 causes the wrist, the two supporting bent rods 44, the soft belt ring 46, and another support to rotate. The support rod frame 42 rotates upward together, and the double-sided concave plate 41 swings downward, which will cause the support round rod 66, the fixed gear 65 and the rotating gear 67 to swing downward together. The downward swing of the fixed gear 65 will cause the support round head plate 63 to move in the opposite direction, the telescopic spring 64 will return to its original position, and the reverse movement of the fixed gear 65 will cause the rotating gear 67 to rotate in the opposite direction. The reverse rotation of the rotating gear 67 will cause the two support rod frames 42, the two support curved rods 44, the soft belt ring 46 and the wrist to rotate in the opposite direction. This process is repeated, which can maintain the activity of the wrist muscles, avoid edema in the acute phase, and restore the normal strength and range of motion of the hand as soon as possible, thereby improving the rehabilitation training effect of the patient's wrist.
[0030] Example 3: Based on Example 2, such as Figures 1-4 As shown, it also includes a finger-spreading mechanism, which is mounted on a double-sided concave plate 41. The finger-spreading mechanism includes an arc-shaped baffle 71, a support bracket 72, a push plate 73, a buffer spring 74, and a round-headed pull rod 75. Two arc-shaped baffles 71 are bolted to each double-sided concave plate 41. A support bracket 72 is bolted between two adjacent support brackets 44. Two push plates 73 are bolted to the middle of each support bracket 72. Two round-headed pull rods 75 are slidably connected to each support bracket 72. A buffer spring 74 is connected between the round-headed pull rod 75 and the push plate 73.
[0031] Two curved baffles 71 on the same double-sided concave plate 41 form a group, and the spacing between the curved baffles 71 in each group gradually increases from both sides to the middle, and they are set at an angle.
[0032] After the patient places their palm in contact with the soft band ring 46, they use the push plate 73 to spread their four fingers, which are inserted into the soft band ring 46, in an alternating manner. The upward rotation of the two support rods 44 causes the support bracket 72, the four push plates 73, and the two round-headed pull rods 75 to rotate upward together. The upward rotation of the round-headed pull rods 75 first causes them to contact the curved baffle 71. As the two round-headed pull rods 75 continue to rotate, they move along the curved baffle 71 to the side away from each other. The buffer spring 74 is stretched. The movement of the two round-headed pull rods 75 causes the two side push plates 73 to move to the side away from each other. The movement of the two side push plates 73 pushes the middle and little fingers to move to the side away from each other. When the two supporting curved rods 44 rotate downwards, they will cause the supporting bracket 72, the four push plates 73, and the two round-headed pull rods 75 to rotate downwards together. When the round-headed pull rods 75 rotate downwards, the arc-shaped baffle 71 will no longer push the round-headed pull rods 75, and the buffer spring 74 will drive the two round-headed pull rods 75 to move in the opposite direction. When the two round-headed pull rods 75 move in the opposite direction, they will no longer push the fingers to move, and the fingers will return to their original position on their own. This process is repeated, which allows the fingers to open and close alternately, improves the range of motion of the fingers, trains the muscles in the fingers, promotes the recovery of the fingers, enhances the patient's physical activity, and improves the rehabilitation training effect of the patient's fingers.
[0033] Example 4: Based on Example 3, such as Figure 5 As shown, it also includes a sliding bent rod 81, a pressure spring 82, and a binding strap 83. Two sliding bent rods 81 are slidably connected to each of the double-sided concave plates 41. A pressure spring 82 is connected between each of the sliding bent rods 81 and the double-sided concave plate 41. A binding strap 83 is connected between two adjacent sliding bent rods 81.
[0034] The staff can first pull the restraint strap 83 upward. The upward movement of the restraint strap 83 will cause the two sliding curved rods 81 to move upward together, and the pressure spring 82 will be stretched. Then, the patient's arm is passed through the restraint strap 83 and placed on the double-sided concave plate 41. Then, the restraint strap 83 is released. At this time, the pressure spring 82 returns to its original position and causes the two sliding curved rods 81 and the restraint strap 83 to move downward together. The downward movement of the restraint strap 83 will contact the patient's arm and limit the patient's arm, so that the arm can be closely attached to the double-sided concave plate 41, thereby better facilitating arm movement.
[0035] Example 5: Based on Example 4, such as Figures 3-4 As shown, it also includes a support bend plate 91 and an elastic pressure band 92. Each support bracket 72 is bolted with two support bend plates 91, and an elastic pressure band 92 is connected between two adjacent support bend plates 91.
[0036] Staff can place the fingertips of the patient's four fingers on the elastic band 92 to allow the patient's four fingers to spread out more, which helps to better carry out rehabilitation training for the fingers.
[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.
Claims
1. A neurological rehabilitation training device, characterized in that: It includes support legs (1), bed board (2), support plate (3), hand fixing mechanism and swing arm mechanism. The bed board (2) is fixedly connected between the tops of the two support legs (1). The bed board (2) is used to provide a flat space for the patient. The support plate (3) is fixedly connected to both sides of the bed board (2). The support plate (3) is provided with a hand fixing mechanism and a swing arm mechanism. The hand fixing mechanism is used to limit the patient's two arms. The swing arm mechanism is used to drive the patient's arms to swing up and down. The hand fixing mechanism includes a double-sided concave plate (41), a support rotating rod frame (42), a torsion spring (43), a support bent rod (44), a tension spring (45), and a soft belt ring (46). A double-sided concave plate (41) is placed on the upper surface of each support plate (3). A support rotating rod frame (42) is slidably connected to both sides of each double-sided concave plate (41). A torsion spring (43) is connected between each support rotating rod frame (42) and the double-sided concave plate (41). A support bent rod (44) is slidably connected to each support rotating rod frame (42). A tension spring (45) is connected between the support bent rod (44) and the support rotating rod frame (42). A soft belt ring (46) is fixedly connected between two adjacent support bent rods (44).
2. The neurological rehabilitation training device as described in claim 1, characterized in that: The swing arm mechanism includes a motor (51), a transmission gear (52), a rack (53), and guide rods (54). A motor (51) is fixedly connected to each support plate (3), and a transmission gear (52) is fixedly connected to the output shaft of each motor (51). A rack (53) is fixedly connected to one side of each double-sided concave plate (41). Both racks (53) pass through the support plate (3). The transmission gear (52) meshes with the rack (53). Two guide rods (54) are fixedly connected to the side of each double-sided concave plate (41). Each guide rod (54) is slidably connected to the support plate (3).
3. The neurological rehabilitation training device as described in claim 2, characterized in that: It also includes a wrist swing mechanism, which is mounted on the support plate (3). The wrist swing mechanism includes a support groove plate (61), a guide support frame (62), a support round head plate (63), a telescopic spring (64), a fixed gear (65), a support round rod (66), and a rotating gear (67). A support groove plate (61) is fixedly connected to the side of each support plate (3), and a guide support frame (62) is slidably connected to each support groove plate (61). Each guide support frame (64) is fixedly connected to the side of each support plate (3). 2) Each of the upper and lower surfaces is slidably connected to a support round plate (63), and a telescopic spring (64) is connected between the support round plate (63) and the guide support frame (62). Each of the double-sided concave plates (41) is fixedly connected to a support round rod (66) on the side away from the guide bend rod (54). Each of the support round rods (66) is rotatably connected to a fixed gear (65), and each of the support rotating rod frames (42) is fixedly connected to a rotating gear (67). The fixed gear (65) and the rotating gear (67) mesh.
4. The neurological rehabilitation training device as described in claim 3, characterized in that: It also includes a finger spreading mechanism, which is mounted on a double-sided concave plate (41). The finger spreading mechanism includes an arc-shaped baffle (71), a support bracket (72), a push plate (73), a buffer spring (74), and a round-headed pull rod (75). Two arc-shaped baffles (71) are fixedly connected to each double-sided concave plate (41). A support bracket (72) is fixedly connected between two adjacent support brackets (44). Two push plates (73) are fixedly connected in the middle of each support bracket (72). Two round-headed pull rods (75) are slidably connected to each support bracket (72). A buffer spring (74) is connected between the round-headed pull rod (75) and the push plate (73).
5. The neurological rehabilitation training device as described in claim 4, characterized in that: Two of the arc-shaped baffles (71) on the same double-sided concave plate (41) form a group. The spacing between the arc-shaped baffles (71) in each group gradually increases from the two sides to the middle, and they are set at an angle.
6. The neurological rehabilitation training device as described in claim 4, characterized in that: It also includes sliding bends (81), pressure springs (82) and binding straps (83). Two sliding bends (81) are slidably connected to each of the double-sided concave plates (41). Each sliding bend (81) is connected to a pressure spring (82) between it and the double-sided concave plate (41). A binding strap (83) is connected between two adjacent sliding bends (81).
7. The neurological rehabilitation training device as described in claim 6, characterized in that: It also includes support bends (91) and elastic pressure bands (92), with two support bends (91) fixedly connected to each support bracket (72), and an elastic pressure band (92) connecting two adjacent support bends (91).