Knee joint pain rehabilitation belt for old people

Abstract

The invention belongs to the technical field of knee joint adjuvant therapy, and discloses an old knee joint pain rehabilitation belt which comprises a rehabilitation belt assembly, the rehabilitation belt assembly comprises a thigh bandage, an above-knee bandage, a below-knee bandage, an ankle joint bandage and an elastic belt, the thigh bandage and the ankle joint bandage are connected through the elastic belt, and the elastic belt is connected with the knee joint bandage. The micro power generation assembly and the direct-current voltage-stabilized power supply module are both mounted on the thigh bandage. According to the scheme, in the walking process of a patient, the elastic band provides resistance for the patient in the knee straightening process, in the knee straightening process, the ankle joint bandage drives the rope body to extend, and therefore the winding roller drives the output shaft of the coil generator to rotate, generates current and transmits the current to the direct-current voltage-stabilized power supply module to be rectified, filtered and stabilized, and then the current is stored in the capacitor; and finally, the capacitor supplies power to the TENS patch, so that pain is relieved in the knee bending or straightening process of the patient.

Description

Technical Field

[0001] The invention belongs to the technical field of knee joint auxiliary treatment, in particular to a rehabilitation belt for knee joint pain in the elderly. Background Art

[0002] The knee joint pain relief belt is a medical aid that assists in the recovery of knee joint function through physical support and dynamic pressure regulation. It is mainly used to correct the movement trajectory of the patient's knee joint and assist in muscle strength training. It is suitable for scenes such as osteoarthritis, ligament injury, and postoperative rehabilitation.

[0003] Medical staff usually recommend patients to wear elastic bands, which can effectively activate the muscle groups around the knee joint (such as quadriceps, hamstrings, gluteal muscles, etc.) by applying resistance to the patient during walking, and help restore muscle strength to achieve the training effect on the patient's knee joint and leg muscles. However, during the initial training of patients, due to the damage to the patient's knee joint, the patient will feel pain during the training process, which will affect the patient's training enthusiasm, interrupt the training process, and ultimately affect the rehabilitation effect. Therefore, in order to solve the above problems, a rehabilitation belt for knee pain in the elderly is proposed. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a rehabilitation belt for knee pain in the elderly, which solves the problem that when patients use elastic rehabilitation belts to assist the muscle groups around the knee joints, the pain caused by the damaged knee joints will reduce the patients' training enthusiasm.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rehabilitation belt for knee pain in the elderly, comprising a rehabilitation belt assembly, wherein the rehabilitation belt assembly comprises a thigh strap, an above-knee strap, a below-knee strap, an ankle strap and an elastic band, wherein the thigh strap and the ankle strap are connected by the elastic band, and further comprising: a micro-generator assembly and a DC voltage-stabilized power supply module, both of which are mounted on the thigh strap, and the current generated by the micro-generator assembly flows to the DC voltage-stabilized power supply module; a TENS patch, which is mounted on the DC voltage-stabilized power supply module; and a buffer assembly, which is mounted on the rehabilitation belt assembly and used to support the rehabilitation belt assembly;

[0006] The micro-generator assembly comprises a coil generator and an outer cylinder fixedly mounted on the thigh strap, the outer cylinder is sleeved on the outside of the coil generator, a winding roller is fixedly connected to the output end of the coil generator, a rope body is wound on the winding roller, the other end of the rope body passes through the outer cylinder and is fixedly connected to the ankle strap, and a spring in a compressed state is fixedly connected between the inner wall of the outer cylinder and the winding roller;

[0007] One end of the TENS patch is a patch end and is located between the above-knee strap and the below-knee strap.

[0008] Preferably, the DC regulated power supply module includes a rectifier module, a filter module, a voltage stabilization module and an energy storage capacitor module.

[0009] Preferably, the thigh strap, the knee strap and the ankle strap are symmetrically fixed with convex pillars 1, 2 and 3 respectively, and the convex pillar 3 is at the same height as the patient's knee joint;

[0010] The buffer assembly includes a connecting rod 1 hinged on a convex column 1, the middle portion of the connecting rod 1 is movably mounted on the outside of a convex column 2, a connecting rod 2 is hinged on a convex column 3, the bottom of the connecting rod 1 and the top of the connecting rod 2 are both hinged on a hinge point, a piston cylinder is hinged on the connecting rod 1, a piston rod is hinged on the connecting rod 2, the top end of the piston rod is movably mounted inside the piston cylinder, and a through hole 4 is provided on the top end of the piston cylinder, which is located above the piston rod and connected to the piston cylinder cavity.

[0011] Preferably, a blocking rod is fixedly connected to one side of the bottom end of the first connecting rod, and the bottom end of the blocking rod is initially in contact with the top end of the second connecting rod.

[0012] Preferably, the top of the piston cylinder is further provided with through hole one, through hole two and through hole three located below through hole four, the top cross-section of through hole three is equal to that of through hole two, and the top cross-sectional areas of both are smaller than the top cross-sectional area of ​​through hole one;

[0013] The piston cylinder cavity can be connected with through hole four through through hole one and through hole two, and the piston cylinder cavity can also be connected with the outside through through hole three.

[0014] Preferably, the top of the piston cylinder is also provided with an adjustment component for controlling the closing of through hole 1 and through hole 4;

[0015] The adjusting assembly comprises a circular ring movably sleeved on the top of the piston cylinder and located between through hole 4 and through hole 1, a connecting column is fixedly connected to the inner wall of the circular ring, and the bottom end of the connecting column passes through through hole 1 and extends to the bottom thereof and is fixedly connected to a baffle;

[0016] The baffle plate can move upward to block the first through hole, and the ring can move upward to block the fourth through hole.

[0017] Preferably, a protective component is also provided on the top of the piston cylinder, and the protective component includes a cross bar provided on the top of the piston cylinder and transversely passing through the piston cylinder, an L-shaped tube is opened in the cross bar, and in the initial state, the through hole three is connected to the outside through the bottom end of the L-shaped tube.

[0018] Preferably, the length of the opening at the bottom end of the L-shaped tube is greater than the diameter of the through hole three;

[0019] The top of the piston cylinder is also hinged with a connecting rod 4, one end of the cross bar extends to the outside of the piston cylinder and is movably connected to the top of the connecting rod 4, and the bottom end of the connecting rod 4 is a counterweight;

[0020] When the L-shaped tube moves away from the connecting rod four, the outer wall of the cross bar can block the top of the through hole three, and when the L-shaped tube moves toward the connecting rod four, the L-shaped tube can still maintain communication with the through hole three.

[0021] Preferably, a rubber band is also provided on the top of the piston cylinder, and the rubber band can be sleeved on the connecting rod four and pull the bottom end of the connecting rod four to contact the piston cylinder.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The above scheme is that the patient wears a thigh strap, an upper knee strap, a lower knee strap and an ankle strap, so that the patient's knee joint is at the upper knee strap and the lower knee strap. When the patient walks, the elastic band provides resistance to the patient's knee straightening process. During the knee straightening process, the ankle strap will drive the rope to extend, thereby driving the output shaft of the coil generator to rotate through the winding roller and generating current to be transmitted to the DC voltage-stabilized power supply module for rectification, filtering, voltage stabilization and storage in the capacitor. Finally, the capacitor supplies power to the TENS patch, thereby achieving pain relief during the patient's knee flexion or knee straightening process.

[0024] The above scheme applies pulling force to the patient's calf through the elastic band during the patient's knee flexion process, so that the patient has a tendency to flex his knees, and at the same time, the top end of the piston rod moves upward along the inside of the piston cylinder. At this time, the gas inside the piston cylinder will push the baffle upward to block the through hole one, and the ring will also move upward to block the through hole four. At this time, the gas inside the piston cylinder will be discharged to the outside through the through hole two and the through hole three, so as to avoid the patient's knee injury caused by rapid knee flexion. When the patient straightens his knees, the outside gas first enters the piston cylinder through the through hole three and causes the adjustment component to move downward as a whole to release the blockage of the through hole four and the through hole one, so as to ensure that the patient can straighten his knees smoothly and facilitate the patient's movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the formal plan structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the top planar structure of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the TENS patch of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the micro power generation assembly of the present invention;

[0030] Figure 6It is a schematic diagram of the structure of the buffer assembly of the present invention;

[0031] Figure 7 It is a schematic cross-sectional structural diagram of the piston cylinder of the present invention;

[0032] Figure 8 for Figure 7 The enlarged view of point A in the middle;

[0033] Fig. 9 This is a simple plan view of the patient's front leg accidentally bending at the knee during walking;

[0034] Fig.10 A simplified diagram of the patient moving back and flexing his knee.

[0035] In the figure: 1. Rehabilitation belt assembly; 11. Thigh strap; 111. Boss 1; 12. Above-knee strap; 121. Boss 2; 13. Below-knee strap; 14. Ankle strap; 141. Boss 3; 15. Elastic band; 2. Micro power generation assembly; 21. Coil generator; 22. Outer cylinder; 23. Winding roller; 24. Spring; 25. Rope body; 3. DC regulated power supply module; 4. TENS patch ; 5. Buffer assembly; 51. Connecting rod one; 511. Baffle rod; 52. Connecting rod two; 53. Piston cylinder; 531. Through hole one; 532. Through hole two; 533. Through hole three; 54. Piston rod; 55. Through hole four; 6. Adjustment assembly; 61. Ring; 62. Connecting column; 63. Baffle; 7. Protection assembly; 71. Cross bar; 72. L-shaped tube; 73. Connecting rod four; 8. Rubber band; 9. Hinge point. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments 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.

[0037] like Figures 1 to 10 As shown, the present invention provides a rehabilitation belt for knee pain in the elderly, including a rehabilitation belt assembly 1, wherein the rehabilitation belt assembly 1 includes a thigh strap 11, an upper knee strap 12, a lower knee strap 13, an ankle strap 14 and an elastic band 15, wherein the thigh strap 11 and the ankle strap 14 are connected via the elastic band 15, and further includes: a micro-generator assembly 2 and a DC voltage-stabilized power supply module 3, both of which are mounted on the thigh strap 11, and the current generated by the micro-generator assembly 2 flows to the DC voltage-stabilized power supply module 3; a TENS patch 4, which is mounted on the DC voltage-stabilized power supply module 3; and a buffer assembly 5, which is mounted on the rehabilitation belt assembly 1 and is used to support the rehabilitation belt assembly 1;

[0038] The micro-generator assembly 2 comprises a coil generator 21 and an outer cylinder 22 fixedly mounted on the thigh strap 11. The outer cylinder 22 is sleeved on the outside of the coil generator 21. A winding roller 23 is fixedly connected to the output end of the coil generator 21. A rope 25 is wound on the winding roller 23. The other end of the rope 25 passes through the outer cylinder 22 and is fixedly connected to the ankle strap 14. A spring 24 in a compressed state is fixedly connected between the inner wall of the outer cylinder 22 and the winding roller 23.

[0039] One end of the TENS patch 4 is a patch end and is located between the above-knee strap 12 and the below-knee strap 13;

[0040] The DC regulated power supply module 3 includes a rectifier module, a filter module, a voltage stabilization module and an energy storage capacitor module.

[0041] According to the above scheme, the patient wears the thigh strap 11, the knee strap 12, the knee strap 13 and the ankle strap 14, so that the patient's knee joint is at the knee strap 12 and the knee strap 13. When the patient walks, the elastic band 15 provides resistance to the patient's knee straightening process. During the knee straightening process, the ankle strap 14 drives the rope body 25 to extend, thereby driving the output shaft of the coil generator 21 to rotate through the winding roller 23 and generating current to be transmitted to the DC voltage-stabilized power supply module 3 for rectification, filtering, voltage stabilization and storage in the capacitor. Finally, the capacitor supplies power to the TENS patch 4, so as to achieve pain relief during the patient's knee flexion or knee straightening process.

[0042] It is worth noting that the single pulse voltage of a typical TENS device is 10-150V, the current is 10-30mA, and the pulse width is 50-200μs. The pulse frequency of a TENS device is usually 10-200Hz. Assuming the frequency is 100Hz and the treatment time is 2 seconds, the single treatment energy is 0.02 joules J.

[0043] For the micro-generator assembly 2, assuming that the coil diameter is 2 cm, the patient can drive the shaft of the coil generator 21 to rotate 5 times through the rope body 25 each time he walks. According to the energy conversion loss of 80%, the energy that the micro-generator assembly 2 can finally generate is 0.12 joules J, which is sufficient to meet the energy supply of the TENS patch 4.

[0044] like Figure 1 , Figure 2 and Figure 6-Figure 8 As shown, the thigh strap 11, the knee strap 12 and the ankle strap 14 are symmetrically fixed with a convex column 111, a convex column 2 121 and a convex column 3 141, respectively, and the convex column 3 141 is at the same height as the patient's knee joint;

[0045] The buffer assembly 5 includes a connecting rod 1 51 hinged on the convex column 111, the middle part of the connecting rod 1 51 is also movably sleeved on the outside of the convex column 2 121, the convex column 3 141 is hinged with a connecting rod 2 52, the bottom of the connecting rod 1 51 and the top of the connecting rod 2 52 are both hinged on the hinge point 9, the connecting rod 1 51 is hinged with a piston cylinder 53, the connecting rod 2 52 is hinged with a piston rod 54, the top end of the piston rod 54 is movably sleeved inside the piston cylinder 53, and the top end of the piston cylinder 53 is provided with a through hole 4 55 located above the piston rod 54 and connected to the cavity of the piston cylinder 53;

[0046] A stopper 511 is fixedly connected to one side of the bottom end of the first connecting rod 51. The bottom end of the stopper 511 initially contacts the top end of the second connecting rod 52 to prevent the patient's knee joint from bending backward during exercise.

[0047] The top of the piston cylinder 53 is also provided with a through hole 1 531, a through hole 2 532 and a through hole 3 533 located below the through hole 4 55. The top cross-section of the through hole 3 533 is equal to that of the through hole 2 532, and the top cross-sectional areas of both are smaller than the top cross-sectional area of ​​the through hole 1 531.

[0048] The cavity of the piston cylinder 53 can be connected to the through hole 4 55 through the through hole 1 531 and the through hole 2 532, and the cavity of the piston cylinder 53 can also be connected to the outside through the through hole 3 533;

[0049] The top of the piston cylinder 53 is also provided with an adjustment component 6 for controlling the closing of the through hole 1 531 and the through hole 4 55; the adjustment component 6 includes a ring 61 movably sleeved on the top of the piston cylinder 53 and located between the through hole 4 55 and the through hole 1 531, and a connecting column 62 is fixedly connected to the inner wall of the ring 61, and the bottom end of the connecting column 62 passes through the through hole 1 531 and extends to the bottom thereof and is fixedly connected with a baffle 63; the baffle 63 can block the through hole 1 531 when it moves upward, and can make the ring 61 move upward to block the through hole 4 55;

[0050] By adopting the above scheme, the elastic band 15 applies a pulling force to the patient's calf during the patient's knee flexion process, so that the patient has a tendency to flex his knees, and at the same time, the top end of the piston rod 54 moves upward along the inside of the piston cylinder 53. At this time, the gas inside the piston cylinder 53 will push the baffle 63 upward to block the through hole 1 531, and the ring 61 will also move upward to block the through hole 4 55. At this time, the gas inside the piston cylinder 53 will be discharged to the outside through the through hole 2 532 and the through hole 3 533, so as to avoid the patient's knee injury caused by rapid knee flexion. When the patient straightens his knees, the outside gas first enters the piston cylinder 53 through the through hole 3 533 and causes the adjustment component 6 to move downward as a whole to release the blockage of the through hole 4 55 and the through hole 1 531, so as to ensure that the patient can straighten his knees smoothly and facilitate the patient's movement.

[0051] like Figure 1 , Figure 2 and Figure 6-Figure 10As shown, a protection component 7 is also provided on the top of the piston cylinder 53, and the protection component 7 includes a cross bar 71 provided on the top of the piston cylinder 53 and transversely passing through the piston cylinder 53, and an L-shaped tube 72 is provided in the cross bar 71. In the initial state, the through hole 533 is connected to the outside through the bottom end of the L-shaped tube 72;

[0052] The length of the opening at the bottom end of the L-shaped tube 72 is greater than the diameter of the through hole three 533; a connecting rod four 73 is also hinged on the top of the piston cylinder 53, one end of the cross bar 71 extends to the outside of the piston cylinder 53 and is movably connected to the top of the connecting rod four 73, and the bottom end of the connecting rod four 73 is a counterweight; when the L-shaped tube 72 moves away from the connecting rod four 73, the outer wall of the cross bar 71 can block the top of the through hole three 533, and when the L-shaped tube 72 moves toward the connecting rod four 73, the L-shaped tube 72 can still maintain communication with the through hole three 533;

[0053] With the above solution, when the patient steps forward with one foot and does not stand firmly, the patient's knee will bend forward (see the attached figure). Fig. 9 ), at this time, the buffer assembly 5 as a whole will be in a state of tilting to one side, and the connecting rod 4 73 will be kept in a vertical state by its own gravity and form an angle with the piston cylinder 53. At this time, the top of the connecting rod 4 73 will push the cross bar 71 to move and make the cross bar 71 block the top of the through hole 3 533. At this time, when the patient's legs are bent, after the adjustment assembly 6 blocks the through hole 4 55, the gas inside the piston cylinder 53 cannot be discharged, thereby ensuring that the piston cylinder 53 and the piston rod 54 cannot be shortened, thereby preventing the patient's legs from suddenly bending due to not standing firmly and causing the patient to fall;

[0054] On the patient's legs (such as Fig.10 ) as shown in the figure, when the knee needs to be flexed and contracted, since the buffer assembly 5 is tilted to the other side as a whole, the connecting rod four 73 still remains in a vertical state, so that the top end of the connecting rod four 73 will pull the cross bar 71 to move toward the connecting rod four 73. At this time, the setting of the bottom end of the cross bar 71 is that the cross bar 71 will still maintain communication with the through hole three 533, thereby ensuring that the patient can flex the knee normally and slowly during this process.

[0055] like Figure 6 and Figure 8 As shown, a rubber band 8 is also provided on the top of the piston cylinder 53, and the rubber band 8 can be sleeved on the connecting rod 4 73 and pull the bottom end of the connecting rod 4 73 to contact the piston cylinder 53;

[0056] By adopting the above solution, the connecting rod 4 73 is fixed by the rubber band 8, so that the bottom end of the cross bar 71 is continuously connected with the through hole 3 533. At this time, the operator can perform training in the supine position by raising the legs and bending the knees.

[0057] The working principle and use process of the present invention:

[0058] First, the operator puts on the thigh strap 11, the knee strap 12, the knee strap 13 and the ankle strap 14, so that the patient's knee joint is at the knee strap 12 and the knee strap 13. When the patient walks, the elastic band 15 provides resistance to the patient's knee straightening process. During the knee straightening process, the ankle strap 14 drives the rope body 25 to extend, thereby driving the output shaft of the coil generator 21 to rotate through the winding roller 23 and generating current to be transmitted to the DC voltage-stabilized power supply module 3 for rectification, filtering, voltage stabilization and storage in the capacitor. Finally, the capacitor supplies power to the TENS patch 4, so as to achieve pain relief during the patient's knee flexion or knee straightening process.

[0059] When the patient is walking, the connecting rod 2 52 will rotate around the hinge point 9, at which time the length of the piston rod 54 and the piston cylinder 53 will shrink, and the gas inside the piston cylinder 53 will be discharged due to the movement of the piston rod 54, thereby reducing the patient's walking speed and preventing the patient's knee from being injured due to excessive walking speed;

[0060] When the patient bends his knees, the elastic band 15 will apply a pulling force to the patient's calves, so that the patient has a tendency to bend his knees, and at the same time, the top end of the piston rod 54 moves upward along the inside of the piston cylinder 53. At this time, the gas inside the piston cylinder 53 will push the baffle 63 upward to block the through hole 1 531, and the ring 61 will also move upward to block the through hole 4 55. At this time, the gas inside the piston cylinder 53 will be discharged to the outside through the through hole 2 532 and the through hole 3 533, so as to avoid the patient's knee injury caused by the patient's rapid knee bending. When the patient straightens his knees, the external gas first enters the piston cylinder 53 through the through hole 3 533 and causes the adjustment component 6 to move downward as a whole to release the blockage of the through hole 4 55 and the through hole 1 531, so as to ensure that the patient can straighten his knees smoothly and facilitate the patient's movement.

[0061] When the patient steps forward with one foot and does not stand firmly, the patient's knee will bend forward (see the attached figure). Fig. 9 ), at this time, the buffer component 5 as a whole will be in a state of tilting to one side, and the connecting rod four 73 will be kept in a vertical state due to its own gravity and form an angle with the piston cylinder 53. At this time, the top of the connecting rod four 73 will push the cross bar 71 to move and make the cross bar 71 block the top of the through hole three 533. At this time, when the patient's legs are bent, after the adjustment component 6 blocks the through hole four 55, the gas inside the piston cylinder 53 cannot be discharged, thereby ensuring that the piston cylinder 53 and the piston rod 54 cannot be shortened, thereby avoiding the patient's legs suddenly not standing firmly and bending, thereby causing the patient to fall.

[0062] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0063] 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. A rehabilitation belt for knee pain in the elderly, comprising a rehabilitation belt assembly (1), wherein the rehabilitation belt assembly (1) comprises a thigh strap (11), an above-knee strap (12), a below-knee strap (13), an ankle strap (14) and an elastic band (15), wherein the thigh strap (11) and the ankle strap (14) are connected by the elastic band (15), and characterized in that: Also includes: The micro-generator assembly (2) and the DC voltage-stabilized power supply module (3) are both mounted on the thigh strap (11), and the current generated by the micro-generator assembly (2) flows to the DC voltage-stabilized power supply module (3); A TENS patch (4) is mounted on a DC regulated power supply module (3); A buffer assembly (5) mounted on the rehabilitation belt assembly (1) for supporting the rehabilitation belt assembly (1); The micro-generator assembly (2) comprises a coil generator (21) and an outer cylinder (22) fixedly mounted on a thigh bandage (11); the outer cylinder (22) is sleeved on the outside of the coil generator (21); a winding roller (23) is fixedly connected to the output end of the coil generator (21); a rope (25) is wound on the winding roller (23); the other end of the rope (25) passes through the outer cylinder (22) and is fixedly connected to the ankle bandage (14); a spring (24) in a compressed state is fixedly connected between the inner wall of the outer cylinder (22) and the winding roller (23); One end of the TENS patch (4) is a patch end and is located between the above-knee strap (12) and the below-knee strap (13).

2. The elderly knee pain rehabilitation belt according to claim 1, characterized in that: The DC voltage-stabilized power supply module (3) comprises a rectification module, a filtering module, a voltage-stabilizing module and an energy storage capacitor module.

3. The elderly knee pain rehabilitation belt according to claim 1, characterized in that: The thigh strap (11), the knee strap (12) and the ankle strap (14) are respectively and symmetrically fixed with a convex column 1 (111), a convex column 2 (121) and a convex column 3 (141), and the convex column 3 (141) is at the same height as the patient's knee joint. The buffer assembly (5) comprises a connecting rod (51) hinged on a convex column (111); the middle portion of the connecting rod (51) is movably mounted on the outside of a convex column (121); a connecting rod (52) is hinged on a convex column (141); the bottom of the connecting rod (51) and the top of the connecting rod (52) are both hinged on a hinge point (9); a piston cylinder (53) is hinged on the connecting rod (51); a piston rod (54) is hinged on the connecting rod (52); the top end of the piston rod (54) is movably mounted inside the piston cylinder (53); and a through hole (55) is provided at the top end of the piston cylinder (53) and is located above the piston rod (54) and is connected to the cavity of the piston cylinder (53).

4. The elderly knee joint pain rehabilitation belt according to claim 3, characterized in that: A blocking rod (511) is also fixedly connected to one side of the bottom end of the first connecting rod (51), and the bottom end of the blocking rod (511) is initially in contact with the top end of the second connecting rod (52).

5. The elderly knee joint pain rehabilitation belt according to claim 3, characterized in that: The top of the piston cylinder (53) is also provided with a through hole one (531), a through hole two (532) and a through hole three (533) located below the through hole four (55); the top cross-section of the through hole three (533) is equal to that of the through hole two (532), and the top cross-sectional areas of both are smaller than the top cross-sectional area of ​​the through hole one (531); The cavity of the piston cylinder (53) can be connected to the through hole four (55) through the through hole one (531) and the through hole two (532), and the cavity of the piston cylinder (53) can also be connected to the outside through the through hole three (533).

6. The elderly knee pain rehabilitation belt according to claim 5, characterized in that: The top of the piston cylinder (53) is also provided with an adjustment component (6) for controlling the closing of through hole 1 (531) and through hole 4 (55); The adjusting assembly (6) comprises a circular ring (61) movably sleeved on the top of the piston cylinder (53) and located between the through hole four (55) and the through hole one (531); a connecting column (62) is fixedly connected to the inner wall of the circular ring (61); the bottom end of the connecting column (62) passes through the through hole one (531) and extends to the bottom thereof and is fixedly connected to a baffle (63); The baffle (63) can block the through hole 1 (531) when it moves upward, and can also make the ring (61) move upward to block the through hole 4 (55).

7. The elderly knee pain rehabilitation belt according to claim 6, characterized in that: A protective component (7) is also provided at the top of the piston cylinder (53), and the protective component (7) comprises a cross bar (71) provided at the top of the piston cylinder (53) and extending transversely through the piston cylinder (53), an L-shaped tube (72) is provided in the cross bar (71), and in an initial state, the through hole three (533) is connected to the outside through the bottom end of the L-shaped tube (72).

8. The elderly knee joint pain rehabilitation belt according to claim 7, characterized in that: The length of the opening at the bottom end of the L-shaped tube (72) is greater than the diameter of the third through hole (533); The top of the piston cylinder (53) is also hinged with a connecting rod four (73), one end of the cross bar (71) extends to the outside of the piston cylinder (53) and is movably connected to the top of the connecting rod four (73), and the bottom end of the connecting rod four (73) is a counterweight; When the L-shaped tube (72) moves away from the connecting rod four (73), the outer wall of the cross bar (71) can block the top of the through hole three (533); when the L-shaped tube (72) moves toward the connecting rod four (73), the L-shaped tube (72) can still maintain communication with the through hole three (533).

9. The elderly knee pain rehabilitation belt according to claim 8, characterized in that: The top of the piston cylinder (53) is also provided with a rubber band (8), which can be sleeved on the connecting rod four (73) and pull the bottom end of the connecting rod four (73) to contact the piston cylinder (53).

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