Walking aid for severe rehabilitation

Abstract

The invention belongs to the technical field of medical apparatus and instruments, and particularly relates to a walking aid for severe illness rehabilitation, which comprises a frame body, and a support frame is mounted at the top of the frame body; the trundle mechanism is arranged at the bottom of the frame body; the rope winding mechanism is arranged on the frame body; and a brake mechanism. By means of the rope winding mechanism, the patient can drive the legs to be lifted through the upper limb strength, compared with a traditional mode that other people pull a rope to drive the legs of the patient to move forwards, the patient can conveniently and autonomously master the time and speed of pulling the rope so as to autonomously master the pace frequency of walking, convenience is improved, and the working efficiency is improved. The frame body can be prevented from moving through the brake mechanism when the legs of the patient are lifted to the highest height position, and the situation that the frame body is driven to move on the ground after the legs of the patient are lifted to the highest height position and the pace frequency during rehabilitation walking training is disturbed is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and particularly relates to a walking assistance device for intensive care rehabilitation. Background Art

[0002] Severely ill patients usually need to stay in bed for a long time for treatment, which easily leads to a decline in lower limb strength and joint stiffness. Therefore, rehabilitation walking training is required to improve the patient's physical condition. Usually, a walking assistance device is used to assist the patient's walking training. The walking assistance device mainly consists of a frame body and casters. When in use, the patient stands inside the frame body, and the frame body supports the patient's body. The patient gradually moves forward by taking steps. Since the casters are installed at the bottom of the frame body, the patient can also drive the frame body to move along the ground, so that during the process of the patient moving the legs and the frame body, the patient is assisted to walk on the ground with a suitable step size and frequency.

[0003] When the existing walking assistance device for intensive care rehabilitation is in use, due to the weakness of the lower limbs of severely ill patients, it is difficult for the patients to take the initiative to move their legs forward. Usually, a rope needs to be tied to the legs, and someone pulls the rope forward to help the patients move their legs forward. In this way, the timing of moving the legs is controlled by others, and the convenience is insufficient. Moreover, the rotation of the casters is usually not restricted during the process of the patients moving their legs. When a person moves a leg, after one foot leaves the ground, muscle coordination is required to maintain the body balance before landing. The higher the foot leaves the ground, the more balance needs to be maintained. However, severely ill patients have insufficient muscle coordination ability, so it is difficult for the patients to maintain balance when the leg is lifted to the highest position, and they are prone to falling. Although there is the protection of the frame body, the patients will not fall to the ground, but it will cause the patients and the frame body to displace on the ground. These displacements are likely to disrupt the step size and frequency during the patients' training process, thereby affecting the efficiency of the rehabilitation walking training. Summary of the Invention

[0004] The purpose of the present invention is to provide a walking assistance device for intensive care rehabilitation, which can enable the patient to drive the leg to lift by using the upper limb strength through a rope winding mechanism. Compared with the traditional method of others pulling the rope to drive the patient's leg to move forward, it is convenient for the patient to independently master the timing and speed of pulling the rope, so as to independently master the step frequency of walking, improve the convenience, and can prevent the frame body from moving when the patient's leg is lifted to the highest position through a braking mechanism, reducing the situation that the frame body moves on the ground when the patient has difficulty maintaining balance when the leg is lifted to the highest position, which disrupts the step frequency during the rehabilitation walking training.

[0005] The technical solution adopted by the present invention is specifically as follows:

[0006] A walking assistance device for intensive care rehabilitation, comprising:

[0007] A frame body, on the top of which a support frame is installed;

[0008] Caster mechanism, the caster mechanism is arranged at the bottom of the frame body, the caster mechanism includes connecting plates respectively rotatably installed at both ends of the bottom of the frame body, and rollers are rotatably connected to the connecting plates;

[0009] Rope winding mechanism, the rope winding mechanism is arranged on the frame body, the rope winding mechanism includes a connecting frame installed on the frame body, both ends of the connecting frame are rotatably connected with reel assemblies, a first connecting rope, a second connecting rope and a third connecting rope are wound and connected to the reel assemblies, the winding directions of the second connecting rope and the third connecting rope are both opposite to the winding direction of the first connecting rope, grips are rotatably installed at both ends of the support frame, one end of the first connecting rope away from the reel assembly is fixedly connected to the grip, one end of the second connecting rope away from the reel assembly is fixedly connected with a strap, and the strap is used to connect the second connecting rope to the patient's leg;

[0010] Brake mechanism, the brake mechanism is arranged outside the roller, the brake mechanism includes a rotating plate rotatably connected to the connecting plate, the rotating plate is located outside the roller, one end of the rotating plate is fixedly connected with a brake plate, the brake plate is in abutting cooperation with the roller, a spring is connected between the end of the rotating plate away from the brake plate and the connecting plate; one end of the third connecting rope away from the reel assembly is installed together with the end of the rotating plate away from the brake plate;

[0011] Wherein, when the grip rotates, it drives the first connecting rope to move, so that the reel assembly rotates to wind up the second connecting rope and the third connecting rope, the second connecting rope drives the patient's leg to lift through the strap, and the third connecting rope drives the rotating plate to rotate so that the brake plate hinders the rotation of the roller.

[0012] As a preferred scheme of the walking aid device for severe rehabilitation according to the present invention, wherein: the reel assembly includes a first cylinder body rotatably connected to the connecting frame, second cylinder bodies and third cylinder bodies are respectively slidably installed along the axial direction at both ends of the first cylinder body, the first connecting rope is wound and connected to the first cylinder body, the second connecting rope is wound and connected to the second cylinder body, and the third connecting rope is wound and connected to the third cylinder body.

[0013] As a preferred scheme of the walking aid device for severe rehabilitation according to the present invention, wherein: the second cylinder body includes a sleeve slidably connected along the axial direction on the first cylinder body, a plurality of winding parts with different outer diameter sizes are fixedly connected to the sleeve along the axial direction, a plurality of the winding parts are detachably connected with the second connecting rope, a plurality of first limiting holes are opened along the circumferential direction on the sleeve, a plurality of second limiting holes are opened along the axial direction on the first cylinder body, and a first limiting nail is detachably connected inside the first limiting hole and the second limiting hole.

[0014] As a preferred embodiment of the walking aid device for critical care rehabilitation according to the present invention, the following applies: The third cylinder is slidably connected to the first cylinder along the axial direction. A plurality of third limiting holes are circumferentially formed along the upper edge of the third cylinder. A fourth limiting hole is formed on the first cylinder. A second limiting pin is detachably connected inside the third limiting hole and the fourth limiting hole.

[0015] As a preferred embodiment of the walking aid device for critical care rehabilitation according to the present invention, the following applies: The connecting frame is slidably connected to the frame body in the vertical direction. A fifth limiting hole is formed on the connecting frame. A plurality of sixth limiting holes are formed along the vertical direction on the frame body. A first limiting pin is slidably connected inside the fifth limiting hole and the sixth limiting hole.

[0016] As a preferred embodiment of the walking aid device for critical care rehabilitation according to the present invention, the following applies: A plurality of lifting tubes are fixedly connected to the bottom of the support frame. The lifting tubes are slidably connected to the frame body in the vertical direction. A plurality of seventh limiting holes are formed along the vertical direction on the lifting tubes. An eighth limiting hole is formed on the frame body. A second limiting pin is slidably connected in the seventh limiting hole and the eighth limiting hole.

[0017] As a preferred embodiment of the walking aid device for critical care rehabilitation according to the present invention, the following applies: The grip is rotatably connected to the support frame. A stopper is arranged on the outer side of the grip. The stopper is fixedly connected to the support frame.

[0018] As a preferred embodiment of the walking aid device for critical care rehabilitation according to the present invention, the following applies: A first limiting ring is arranged on the outer side of the grip. The first limiting ring is fixedly connected to the support frame. A second limiting ring is arranged above the reel assembly. The second limiting ring is fixedly connected to the frame body. The first connecting rope passes through the inside of the first limiting ring and the second limiting ring.

[0019] As a preferred embodiment of the walking aid device for critical care rehabilitation according to the present invention, the following applies: A threaded cylinder is rotatably installed on the top of the connecting plate. The threaded cylinder is threadedly connected to the frame body. A traction rope is inserted inside the threaded cylinder. The lower end of the traction rope passes through the top of the connecting plate and is fixedly connected to one end of the rotating plate away from the brake plate. The upper end of the traction rope is rotatably installed together with one end of the third connecting rope away from the reel assembly.

[0020] As a preferred embodiment of the walking aid device for critical care rehabilitation according to the present invention, the following applies: A fixing ring is fixedly connected to the top of the connecting plate. A convex edge is fixedly connected to the lower end of the threaded cylinder. The convex edge is rotatably matched with the inner side of the fixing ring. A retaining ring is arranged above the convex edge. The retaining ring is fixedly connected to the fixing ring.

[0021] The technical effects achieved by the present invention are:

[0022] The present invention adopts the design of a rope winding mechanism. The rope winding mechanism enables the patient to drive the leg to lift by using the upper limb strength. After the grip rotates inward, it drives the first connecting rope to move, causing the reel assembly to rotate and release the first connecting rope and wind up the second connecting rope, so that the second connecting rope drives the leg to lift through the strap. Compared with the traditional method of others pulling the rope to drive the patient's leg to move forward, it is convenient for the patient to independently master the timing and speed of pulling the rope, so as to independently master the pace frequency of stepping forward and walking, improving the convenience.

[0023] The present invention adopts the design of a rope winding mechanism and a braking mechanism. The braking mechanism can prevent the frame from moving when the patient's leg is lifted to the highest position. While the reel assembly rotates and winds up the second connecting rope, it also winds up the third connecting rope, causing the third connecting rope to drive the rotating plate to rotate and then abut against the roller through the brake plate to prevent the roller from rotating, thereby preventing the frame from moving when the leg is lifted to the highest position. Even if the patient's body shakes unstably at this time, the frame is not likely to displace on the ground. Compared with the traditional method of not restricting the rotation of the roller during the leg lifting process, it reduces the situation that the patient has difficulty maintaining balance when the leg is lifted to the highest position and then drives the frame to displace on the ground, disturbing the pace frequency during the rehabilitation walking training. Brief Description of the Drawings

[0024] Figure 1 is the overall structural schematic diagram of the present invention;

[0025] Figure 2 is the structural schematic diagram of the rope winding mechanism and the frame of the present invention;

[0026] Figure 3 is in the present invention Figure 2 the enlarged schematic diagram of part A in;

[0027] Figure 4 is the disassembly schematic diagram of the cover body of the present invention;

[0028] Figure 5 is the structural schematic diagram of the connecting frame and the reel assembly at one angle of the present invention;

[0029] Figure 6 is the structural schematic diagram of the connecting frame and the reel assembly at another angle of the present invention;

[0030] Figure 7 is the explosion schematic diagram of the first cylinder body and the connecting frame of the present invention;

[0031] Figure 8 is the cross-sectional schematic diagram of the first cylinder body and the winding part of the present invention;

[0032] Figure 9 is the cross-sectional schematic diagram of the winding part of the present invention;

[0033] Figure 10 It is a schematic structural diagram of the grip and the lifting tube in the present invention;

[0034] Figure 11 It is a schematic structural diagram of the first limiting ring and the second limiting ring in the present invention;

[0035] Figure 12 It is a schematic cross-sectional view of the frame body and the caster mechanism in the present invention;

[0036] Figure 13 In the present invention Figure 12 An enlarged schematic view of part B;

[0037] Figure 14 It is a schematic cross-sectional view of the threaded cylinder and the retaining ring in the present invention.

[0038] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0039] 10. Frame body; 11. Support frame; 111. Lifting tube; 20. Caster mechanism; 21. Connecting plate; 211. Fixed ring; 22. Roller; 30. Rope winding mechanism; 31. Connecting frame; 32. Reel assembly; 321. First cylinder; 322. Second cylinder; 323. Third cylinder; 324. Sleeve; 325. Winding part; 33. First connecting rope; 34. Second connecting rope; 35. Third connecting rope; 36. Grip; 37. Binding strap; 40. Brake mechanism; 41. Rotating plate; 42. Brake plate; 43. Spring; 51. First limiting hole; 52. Second limiting hole; 53. First limiting pin; 54. Third limiting hole; 55. Fourth limiting hole; 56. Second limiting pin; 61. Fifth limiting hole; 62. Sixth limiting hole; 63. First limiting pin; 64. Seventh limiting hole; 65. Eighth limiting hole; 66. Second limiting pin; 71. Block; 72. First limiting ring; 73. Second limiting ring; 74. Threaded cylinder; 741. Flange; 75. Towing rope; 76. Retaining ring. Detailed implementation manners

[0040] In order to make the purpose and advantages of the present invention clearer, the present invention will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present invention, and does not strictly limit the specific scope of protection claimed by the present invention.

[0041] Embodiment 1

[0042] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 10 , Figure 11, Figure 12 , Figure 13 and Figure 14 As shown in Figure 12 , Figure 13 and Figure 14 , this is the first embodiment of the present invention. This embodiment provides a walking aid device for intensive rehabilitation, which includes a frame body 10, and a support frame 11 is installed on the top of the frame body 10; a caster mechanism 20, the caster mechanism 20 is arranged at the bottom of the frame body 10, the caster mechanism 20 includes connecting plates 21 rotatably installed at both ends of the bottom of the frame body 10 respectively, and rollers 22 are rotatably connected to the connecting plates 21; a rope winding mechanism 30, the rope winding mechanism 30 is arranged on the frame body 10, the rope winding mechanism 30 includes a connecting frame 31 installed on the frame body 10, both ends of the connecting frame 31 are rotatably connected with a reel assembly 32, a first connecting rope 33, a second connecting rope 34 and a third connecting rope 35 are wound and connected on the reel assembly 32, the winding directions of the second connecting rope 34 and the third connecting rope 35 are both opposite to the winding direction of the first connecting rope 33, grip handles 36 are rotatably installed at both ends of the support frame 11, one end of the first connecting rope 33 away from the reel assembly 32 is fixedly connected to the grip handle 36, one end of the second connecting rope 34 away from the reel assembly 32 is fixedly connected with a strap 37, and the strap 37 is used to connect the second connecting rope 34 with the patient's leg; a braking mechanism 40, the braking mechanism 40 is arranged outside the roller 22, the braking mechanism 40 includes a rotating plate 41 rotatably connected to the connecting plate 21, the rotating plate 41 is located outside the roller 22, one end of the rotating plate 41 is fixedly connected with a brake plate 42, the brake plate 42 is in abutting cooperation with the roller 22, and a spring 43 is connected between the end of the rotating plate 41 away from the brake plate 42 and the connecting plate 21, and one end of the third connecting rope 35 away from the reel assembly 32 is installed together with the end of the rotating plate 41 away from the brake plate 42.

[0043] It should be noted that among long-term bedridden patients, the lower limb strength usually declines more severely than the upper limb strength. This is because long-term bed rest causes the muscles to be inactive for a long time, especially the lower limb muscles, which bear the pressure of supporting the body weight and maintaining blood circulation. If the lower limb muscles are not exercised properly, they are prone to atrophy and muscle strength decline. In contrast, although the upper limbs are also affected, usually due to the larger range and intensity of upper limb activities, the rate and degree of their decline are relatively slow. When a person takes a step, the leg first moves upward away from the ground, moves downward after reaching the highest height position, and then falls back to the ground.

[0044] It should also be noted that a metal ring is fixedly connected to the outer side of the strap 37. One end of the second connecting rope 34 far from the reel assembly 32 passes through the metal ring and is fixedly connected to itself. The strap 37 is a prior art. The strap 37 is a long strip-shaped cloth belt, and the round plush surface and the prickly surface of the magic tape are sewn at both ends respectively. After the strap 37 is formed into a ring, the round plush surface and the prickly surface overlap and buckle together for binding to the patient's leg, which will not be elaborated here. One end of the spring 43 is fixedly connected to the end of the rotating plate 41 far from the brake plate 42, and the other end of the spring 43 is fixedly connected to the connecting plate 21. The brake plate 42 is a sheet-like structure for abutting against the roller 22 and hindering the rotation of the roller 22 through friction. The roller 22 is made of an elastic material. A "U"-shaped pad is fixedly connected to the top of the support frame 11 for placing the upper limb of the patient during rehabilitation walking training. A cover body is detachably connected to the outside of the rope winding mechanism 30. A buckle is fixedly connected to the inner side of the cover body. The buckle is in snap-fit connection with the connecting frame 31. The buckle is made of an elastic material. The shape of the buckle is an incomplete ring with a notch. The notch is used to snap the connecting frame 31 into the inner side of the buckle. The caster wheel mechanism 20 is arranged at the front end of the frame body 10, and a universal wheel is also fixedly connected to the rear end of the frame body 10.

[0045] When the present invention is in use, rotate the grip 36 inward. The grip 36 moves by pulling the first connecting rope 33, causing the reel assembly 32 to rotate. While the reel assembly 32 releases the first connecting rope 33, it winds up the second connecting rope 34 and the third connecting rope 35, causing the second connecting rope 34 to drive the strap 37 to move upward to lift the patient's leg. The third connecting rope 35 drives the rotating plate 41 to rotate, causing the brake plate 42 to approach the roller 22. When the leg is lifted to the highest position, the brake plate 42 abuts against the roller 22 and hinders the rotation of the roller 22. Even if the patient's body is unstable and sways at this time, the frame 10 is not likely to displace on the ground, reducing the situation where the frame 10 displaces and disrupts the training. When the leg needs to be lowered to the ground, the patient's leg moves downward under the action of its own gravity and drives the reel assembly 32 to rotate through the strap 37 and the second connecting rope 34. While the reel assembly 32 releases the second connecting rope 34, it winds up the first connecting rope 33 and releases the third connecting rope 35, causing the first connecting rope 33 to drive the grip 36 to move outward. After the third connecting rope 35 is released, the spring 43 drives the rotating plate 41 to rotate under its elastic action, causing the third connecting rope 35 and the brake plate 42 to reset. The patient controls and adjusts the rotation speed of the grip 36 through the strength of the upper limb to control and adjust the speed of the leg lifting and lowering, so that the patient uses the strength of the upper limb to drive the leg to lift for rehabilitation walking training. Compared with the traditional method of others pulling the rope to drive the patient's leg to move forward, it is convenient for the patient to independently master the timing and speed of pulling the rope, so as to independently master the pace frequency of lifting the leg to walk, improving convenience. And compared with the traditional method where the rotation of the roller 22 is not restricted during the leg lifting process, it reduces the situation where the patient has difficulty maintaining balance when the leg is lifted to the highest position and then drives the frame 10 to displace on the ground, disrupting the pace frequency during the rehabilitation walking training.

[0046] Among them, during the process of the patient lifting the leg, the rotation of the roller 22 is not always hindered, but only hindered when the patient's leg is lifted to the highest position. At other times, the roller 22 can still rotate, facilitating the patient to push the frame 10 forward while lifting the leg forward during the rehabilitation walking training, reducing both the situation where the frame 10 displaces and disrupts the training during the leg lifting process and not causing a large hindrance to the normal movement of the frame 10 during the leg lifting process.

[0047] Embodiment 2

[0048] Refer to Figures 1 to 14 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0049] As Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the reel assembly 32 includes a first cylinder body 321 rotatably connected to the connecting frame 31. Second cylinder bodies 322 and third cylinder bodies 323 are respectively slidably mounted along the axial direction at both ends of the first cylinder body 321. A first connecting rope 33 is wound and connected to the first cylinder body 321, a second connecting rope 34 is wound and connected to the second cylinder body 322, and a third connecting rope 35 is wound and connected to the third cylinder body 323.

[0050] It should be noted that shaft-like parts are integrally and fixedly connected to both ends of the first cylinder body 321 respectively. The second cylinder body 322 and the third cylinder body 323 are respectively in sliding fit with the shaft-like parts at both ends of the first cylinder body 321. A sleeve part is fixedly connected to the connecting frame 31. The shaft-like part at one end of the first cylinder body 321 close to the third cylinder body 323 passes through the sleeve part and is in rotational fit with the sleeve part. A collar is arranged on one side of the sleeve part close to the third cylinder body 323. The collar is fixedly connected to the shaft-like part at one end of the first cylinder body 321 close to the third cylinder body 323 by screws. This collar is used to limit the first cylinder body 321 and reduce the relative displacement of the first cylinder body 321 along the axial direction with respect to the sleeve part. The diameter dimension of the first cylinder body 321 is larger than the diameter dimension of the third cylinder body 323, so that when the first connecting rope 33 is released or wound for a longer length, the third connecting rope 35 is wound or released for a shorter length to adapt to the situation where the rotating plate 41 needs a smaller rotation angle.

[0051] According to the above structure, since the winding directions of both the second connecting rope 34 and the third connecting rope 35 are opposite to the winding direction of the first connecting rope 33, although the first cylinder body 321, the second cylinder body 322, and the third cylinder body 323 rotate in the same direction together, when the first cylinder body 321 releases the first connecting rope 33, the second cylinder body 322 and the third cylinder body 323 respectively wind the second connecting rope 34 and the third connecting rope 35, and when the first cylinder body 321 winds the first connecting rope 33, the second cylinder body 322 and the third cylinder body 323 respectively release the second connecting rope 34 and the third connecting rope 35.

[0052] As Figure 6 、 Figure 7 and Figure 8 As shown, the second cylinder body 322 includes a sleeve 324 slidably connected along the axial direction on the first cylinder body 321. A plurality of winding parts 325 with different outer diameter dimensions are fixedly connected to the sleeve 324 along the axial direction. The plurality of winding parts 325 are all detachably connected to the second connecting rope 34. A plurality of first limiting holes 51 are formed in the sleeve 324 along the circumferential direction, and a plurality of second limiting holes 52 are formed in the first cylinder body 321 along the axial direction. A first limiting nail 53 is detachably connected inside the first limiting hole 51 and the second limiting hole 52.

[0053] It should be noted that two intersecting insertion holes and fixing holes are provided inside the winding part 325. The insertion holes and the fixing holes are communicated with each other. The insertion holes are used to insert the second connecting rope 34 into the inside of the winding part 325. A screw is threadedly connected inside the fixing hole, and the screw is used to limit the second connecting rope 34 in the insertion hole. This detachable connection method is similar to the connection method between the drum and the rope in a winch. Similarly, the connection method between the first connecting rope 33 and the first cylinder 321 and the connection method between the third connecting rope 35 and the third cylinder 323 both adopt this detachable connection method, which will not be elaborated here. The first limiting nail 53 is a screw, and the screw passes through the inside of the first limiting hole 51 and is in threaded cooperation with the second limiting hole 52.

[0054] According to the above structure, since the outer diameter sizes of several winding parts 325 are different, by winding the second connecting rope 34 around the winding parts 325 with different outer diameter sizes, the winding diameter sizes of the first connecting rope 33 and the second connecting rope 34 are adjusted. Furthermore, when the first cylinder 321 and the second cylinder 322 rotate together, the ratio of the lengths of the first connecting rope 33 and the second connecting rope 34 released and wound respectively is adjusted, which is convenient for adjusting the length of the second connecting rope 34 wound by the second cylinder 322 when the grip 36 rotates by the same angle and drives the first connecting rope 33 to move by the same length, so as to adjust the height of the patient's leg being lifted, thereby facilitating the patient to lift the leg to an appropriate height through the grip 36 during the rehabilitation walking training process.

[0055] Wherein, when it is necessary to axially move the second cylinder body 322 along the first cylinder body 321, the first limit pin 53 is removed from the first limit hole 51 and the second limit hole 52, and the second cylinder body 322 is axially moved along the first cylinder body 321 so that the first limit hole 51 is aligned with the second limit hole 52 at a suitable position. Then, the first limit pin 53 is inserted into the first limit hole 51 and the second limit hole 52 to limit the second cylinder body 322 and the first cylinder body 321, thereby adjusting the distance between the second cylinder body 322 and the first cylinder body 321, and further adjusting the distance between the two second cylinder bodies 322. Since the second connecting rope 34 wound around the second cylinder body 322 is connected to the strap 37, it is convenient to adjust the distance between the two second cylinder bodies 322 to adapt to the distance between different legs, improving the applicability. When it is necessary to adjust the length of the second connecting rope 34 extending from the second cylinder body 322, the first limit pin 53 is removed from the first limit hole 51 and the second limit hole 52, and the second cylinder body 322 is rotated along the first cylinder body 321 so that the second limit hole 52 is aligned with the first limit hole 51 at a suitable position. Then, the first limit pin 53 is inserted into the first limit hole 51 and the second limit hole 52 to limit the second cylinder body 322 and the first cylinder body 321, so that after the second cylinder body 322 rotates relative to the first cylinder body 321, the second connecting rope 34 is released or wound up to adjust the length of the second connecting rope 34 extending from the second cylinder body 322. This is convenient for adjusting the length of the second connecting rope 34 extending from the second cylinder body 322 according to the different position heights where the strap 37 is tied during the process of tying the strap 37 to the patient's leg, improving the applicability. Moreover, the axial movement of the second cylinder body 322 along the first cylinder body 321 not only facilitates the adjustment of the distance between the two second cylinder bodies 322, but also adjusts the distance between the two wound parts 325 being wound when the second connecting rope 34 is wound around different wound parts 325, facilitating the wound part 325 to be located in front of the patient's leg, and facilitating the second connecting rope 34 wound around the wound part 325 to pull the leg from the front of the leg. In addition, the rotation of the second cylinder body 322 along the first cylinder body 321 not only facilitates the adjustment of the length of the second connecting rope 34 extending from the second cylinder body 322 when tying the strap 37, but also facilitates the disassembly and assembly of the second connecting rope 34 by rotating the second cylinder body 322 relative to the first cylinder body 321 during the process of the second connecting rope 34 being replaced and wound around different wound parts 325.

[0056] As Figure 6 , Figure 7 and Figure 8 shown, the third cylinder body 323 is axially slidably connected to the first cylinder body 321. A plurality of third limit holes 54 are circumferentially formed in the upper edge of the third cylinder body 323, and a fourth limit hole 55 is formed in the first cylinder body 321. The second limit pin 56 is detachably connected to the inside of the third limit hole 54 and the fourth limit hole 55.

[0057] It should be noted that the second limit pin 56 is a screw, which passes through the inside of the third limit hole 54 and is in threaded fit with the fourth limit hole 55.

[0058] According to the above structure, when it is necessary to adjust the length of the third connecting rope 35 extending from the third cylinder 323, the second limit pin 56 is removed from the third limit hole 54 and the fourth limit hole 55, and the third cylinder 323 is rotated along the first cylinder 321 so that the fourth limit hole 55 is aligned with the third limit hole 54 at a suitable position. Then, the second limit pin 56 is inserted into the inside of the third limit hole 54 and the fourth limit hole 55 to limit the third cylinder 323 and the first cylinder 321. Thus, after the third cylinder 323 rotates relative to the first cylinder 321, the third connecting rope 35 is released or wound up to adjust the length of the third connecting rope 35 extending from the third cylinder 323, which is convenient for driving the braking mechanism 40 to act and hindering the rotation of the roller 22 by the third connecting rope 35 of a suitable length when the patient's leg is lifted to the highest position.

[0059] As Figure 5 shown, the connecting frame 31 is slidably connected to the frame body 10 in the vertical direction. A fifth limit hole 61 is provided on the connecting frame 31, and a plurality of sixth limit holes 62 are provided on the frame body 10 in the vertical direction. A first limit pin 63 is slidably connected inside the fifth limit hole 61 and the sixth limit hole 62.

[0060] According to the above structure, when it is necessary to adjust the angle at which the second connecting rope 34 pulls the patient's leg, the first limit pin 63 is pulled out from the fifth limit hole 61 and the sixth limit hole 62, and the connecting frame 31 is moved up and down along the frame body 10 so that the fifth limit hole 61 is aligned with the sixth limit hole 62 at a suitable position. Then, the first limit pin 63 is inserted into the fifth limit hole 61 and the sixth limit hole 62 to limit the connecting frame 31 and the frame body 10. Without changing the position where the strap 37 is tied to the patient's leg, since the height of the reel assembly 32 changes as the connecting frame 31 moves up and down, the inclination angle of the second connecting rope 34 changes, thereby adjusting the angle at which the second connecting rope 34 pulls the patient's leg, which is convenient for assisting the patient's leg to be lifted by the second connecting rope 34.

[0061] As Figure 2 and Figure 10 shown, a plurality of lifting tubes 111 are fixedly connected to the bottom of the support frame 11. The lifting tubes 111 are slidably connected to the frame body 10 in the vertical direction. A plurality of seventh limit holes 64 are provided on the lifting tubes 111 in the vertical direction, and an eighth limit hole 65 is provided on the frame body 10. A second limit pin 66 is slidably connected inside the seventh limit hole 64 and the eighth limit hole 65.

[0062] According to the above structure, when it is necessary to adjust the height position of the support frame 11, the second limit pin 66 is pulled out from the eighth limit hole 65 and the seventh limit hole 64, and the lifting tube 111 is moved up and down along the frame body 10 so that the eighth limit hole 65 is aligned with the seventh limit hole 64 at an appropriate position. Then, the second limit pin 66 is inserted into the eighth limit hole 65 and the seventh limit hole 64 to limit the lifting tube 111 and the frame body 10, thereby adjusting the height position of the support frame 11 to facilitate adaptation to patients of different heights. During the process of adjusting the height position of the support frame 11, since the first cylinder 321 and the connecting frame 31 can rotate relative to each other, and both the second cylinder 322 and the third cylinder 323 can be released from relative fixation with the first cylinder 321, the first connecting rope 33 is released or wound by rotating the first cylinder 321 to adjust the length of the first connecting rope 33 between the first cylinder 321 and the grip 36 to adapt to the increased or decreased height of the support frame 11.

[0063] As Figure 10 and Figure 11 shown, the grip 36 is rotatably connected to the support frame 11, and a stop block 71 is arranged on the outer side of the grip 36, and the stop block 71 is fixedly connected to the support frame 11.

[0064] It should be noted that the shape of the grip 36 is "L"-shaped. The upper end of the grip 36 is for the patient's hand to hold, and the lower end of the grip 36 is hinged to the support frame 11. A torsion spring (not shown in the figure) is connected between the grip 36 and the support frame 11 at the hinge for resetting the grip 36. The position where the first connecting rope 33 is fixedly connected to the grip 36 is far from the hinge. In the initial state, the outer side of the grip 36 abuts against the stop block 71.

[0065] According to the above structure, if the reel assembly 32 rotates by itself, the reel assembly 32 has two different rotational tendencies, namely winding the first connecting rope 33 and releasing the first connecting rope 33. When the reel assembly 32 rotates in the tendency of winding the first connecting rope 33, since the stop block 71 hinders the grip 36 from continuing to rotate outward, the grip 36 is limited, making it difficult for the reel assembly 32 to wind the first connecting rope 33 and thus difficult to rotate. When the reel assembly 32 rotates in the tendency of releasing the first connecting rope 33, since the winding direction of the third connecting rope 35 is opposite to that of the first connecting rope 33, the reel assembly 32 has a tendency to wind the third connecting rope 35. And the spring 43 drives the end of the third connecting rope 35 away from the reel assembly 32 to move downward under the elastic action, making it difficult for the reel assembly 32 to wind the third connecting rope 35. Thus, the reel assembly 32 is difficult to release the first connecting rope 33 and thus difficult to rotate, further making it difficult for the reel assembly 32 to rotate by itself, improving the stability of the device.

[0066] As Figure 10 and Figure 11As shown, a first limiting ring 72 is provided on the outer side of the grip 36. The first limiting ring 72 is fixedly connected to the support frame 11. A second limiting ring 73 is provided above the reel assembly 32. The second limiting ring 73 is fixedly connected to the frame body 10. The first connecting rope 33 passes through the inside of the first limiting ring 72 and the second limiting ring 73.

[0067] It should be noted that the inner through hole of the first limiting ring 72 is in the horizontal direction, and the inner through hole of the second limiting ring 73 is in the vertical direction.

[0068] According to the above structure, after the first connecting rope 33 winds around the reel assembly 32, it sequentially passes through the second limiting ring 73 and the first limiting ring 72 and is connected to the grip 36. Compared with the way that the first connecting rope 33 is directly connected to the grip 36 after winding around the reel assembly 32, the second limiting ring 73 and the first limiting ring 72 provided make the first connecting rope 33 move more stably during the process of the grip 36 pulling the first connecting rope 33.

[0069] As Figure 12 、 Figure 13 and Figure 14 As shown, a threaded cylinder 74 is rotatably installed at the top of the connecting plate 21. The threaded cylinder 74 is threadedly connected to the frame body 10. A traction rope 75 passes through the inside of the threaded cylinder 74. The lower end of the traction rope 75 passes through the top of the connecting plate 21 and is fixedly connected to one end of the rotating plate 41 away from the brake plate 42. The upper end of the traction rope 75 is rotatably installed together with one end of the third connecting rope 35 away from the reel assembly 32.

[0070] It should be noted that internal threads are provided on the inner wall of the frame body 10, and the internal threads are in threaded cooperation with the threaded cylinder 74. The inside of the threaded cylinder 74 is a vertically through channel. A through hole is provided at the top of the connecting plate 21 for the traction rope 75 to pass through the threaded cylinder 74 and the connecting plate 21. After the lower end of the traction rope 75 passes through the top of the connecting plate 21, it is located inside the spring 43. The traction rope 75 and the third connecting rope 35 are rotatably installed together through an "8" - shaped rotating ring. The "8" - shaped rotating ring is composed of two hinged upper and lower rings, and the two rings can rotate relative to each other, similar to the rotating joint in a keychain. The traction rope 75 passes through one ring and is fixedly connected to itself, and the third connecting rope 35 passes through the other ring and is fixedly connected to itself. The "8" - shaped rotating ring is a prior art and will not be elaborated here.

[0071] According to the above structure, after the reel assembly 32 winds up the third connecting rope 35, the third connecting rope 35 drives the traction rope 75 to move upward. The traction rope 75 drives one end of the rotating plate 41 away from the brake plate 42 to move upward, so that one end of the rotating plate 41 close to the brake plate 42 drives the brake plate 42 to move downward and close to the roller 22, so as to block the rotation of the roller 22 by the brake plate 42 abutting against the roller 22.

[0072] After the threaded cylinder 74 is threadedly connected to the frame body 10, since the connecting plate 21 and the threaded cylinder 74 can rotate relative to each other, the connecting plate 21 and the frame body 10 can rotate relative to each other, facilitating the movement of the frame body 10 in different directions on the ground through the caster mechanism 20. When the connecting plate 21 rotates and drives the traction rope 75 to rotate through the rotating plate 41, the traction rope 75 rotates relative to the third connecting rope 35, reducing the situation where the third connecting rope 35 is twisted after the connecting plate 21 rotates. When the connecting plate 21 and the roller 22 rotate relative to the frame body 10, the third connecting rope 35 can still drive the braking mechanism 40 to act to hinder the rotation of the roller 22.

[0073] As Figure 13 and Figure 14 shown, a fixing ring 211 is fixedly connected to the top of the connecting plate 21, and a convex edge 741 is fixedly connected to the lower end of the threaded cylinder 74. The convex edge 741 is rotationally matched with the inner side of the fixing ring 211. A retaining ring 76 is provided above the convex edge 741, and the retaining ring 76 is fixedly connected to the fixing ring 211.

[0074] It should be noted that the retaining ring 76 and the fixing ring 211 are fixedly connected by screws, which is a conventional existing technology and will not be elaborated here. The inner diameter dimension of the retaining ring 76 is larger than the outer diameter dimension of the threaded cylinder 74 and smaller than the outer diameter dimension of the convex edge 741.

[0075] According to the above structure, the retaining ring 76 hinders the separation of the convex edge 741 and the fixing ring 211 in the vertical direction, making the rotation process between the threaded cylinder 74 and the connecting plate 21 more stable.

[0076] The working principle of the present invention is as follows: By rotating the grip 36 to pull the first connecting rope 33 to move, the first connecting rope 33 drives the reel assembly 32 to rotate. While the reel assembly 32 releases the first connecting rope 33, it winds up the second connecting rope 34, causing the second connecting rope 34 to drive the patient's leg to lift off the ground. Compared with the traditional method of others pulling the rope to drive the patient's leg to move forward, it is convenient for the patient to independently master the timing and speed of pulling the rope, so as to independently master the pace frequency of taking a step while walking, improving the convenience. While the first connecting rope 33 winds up the second connecting rope 34, it also winds up the third connecting rope 35, causing the third connecting rope 35 to drive the rotating plate 41 to rotate. The rotating plate 41 drives the brake plate 42 to approach the roller 22. When the patient's leg is lifted to the highest position, the brake plate 42 abuts against the roller 22 and hinders the rotation of the roller 22. Compared with the traditional method where the rotation of the roller 22 is not restricted during the leg-lifting process, it reduces the situation where it is difficult for the patient to maintain balance when the leg is lifted to the highest position and then drives the frame body 10 to displace on the ground, disturbing the pace frequency during the rehabilitation walking training.

[0077] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention are implemented by conventional means in the art without special description and limitation.

Claims

1. A walking aid for critical illness rehabilitation, characterized in that: include: A frame (10), wherein a support frame (11) is installed on the top of the frame (10); A caster mechanism (20), the caster mechanism (20) being arranged at the bottom of the frame (10), the caster mechanism (20) comprising connecting plates (21) rotatably mounted at two ends of the bottom of the frame (10), and a roller (22) being rotatably connected to the connecting plate (21); A rope winding mechanism (30), the rope winding mechanism (30) is arranged on the frame (10), the rope winding mechanism (30) comprises a connecting frame (31) mounted on the frame (10), both ends of the connecting frame (31) are rotatably connected with a reel assembly (32), a first connecting rope (33), a second connecting rope (34) and a third connecting rope (35) are wound and connected on the reel assembly (32), the winding directions of the second connecting rope (34) and the third connecting rope (35) are opposite to the winding direction of the first connecting rope (33), both ends of the support frame (11) are rotatably mounted with a handle (36), one end of the first connecting rope (33) away from the reel assembly (32) is fixedly connected to the handle (36), and one end of the second connecting rope (34) away from the reel assembly (32) is fixedly connected to a strap (37), and the strap (37) is used to connect the second connecting rope (34) to the patient's leg; A brake mechanism (40), wherein the brake mechanism (40) is arranged on the outer side of the roller (22), and the brake mechanism (40) comprises a rotating plate (41) rotatably connected to the connecting plate (21), wherein the rotating plate (41) is located on the outer side of the roller (22), one end of the rotating plate (41) is fixedly connected to a brake plate (42), and the brake plate (42) is abutted against the roller (22), a spring (43) is connected between one end of the rotating plate (41) away from the brake plate (42) and the connecting plate (21), and one end of the third connecting rope (35) away from the reel assembly (32) is installed together with one end of the rotating plate (41) away from the brake plate (42); The handle (36) rotates to drive the first connecting rope (33) to move, so that the reel assembly (32) rotates to reel in the second connecting rope (34) and the third connecting rope (35); the second connecting rope (34) drives the patient's legs to lift up through the strap (37); the third connecting rope (35) drives the rotating plate (41) to rotate, so that the brake plate (42) hinders the rotation of the roller (22).

2. The walking aid for critical illness rehabilitation according to claim 1, characterized in that: The reel assembly (32) comprises a first cylinder (321) rotatably connected to a connecting frame (31); a second cylinder (322) and a third cylinder (323) are respectively axially slidably mounted on two ends of the first cylinder (321); the first connecting rope (33) is wound around and connected to the first cylinder (321); the second connecting rope (34) is wound around and connected to the second cylinder (322); and the third connecting rope (35) is wound around and connected to the third cylinder (323).

3. The walking aid for critical illness rehabilitation according to claim 2, characterized in that: The second cylinder (322) comprises a sleeve (324) slidably connected to the first cylinder (321) along the axial direction, a plurality of winding parts (325) with different outer diameters are fixedly connected to the sleeve (324) along the axial direction, and the plurality of winding parts (325) are detachably connected to the second connecting rope (34), a plurality of first limiting holes (51) are opened in the circumferential direction on the sleeve (324), a plurality of second limiting holes (52) are opened in the axial direction on the first cylinder (321), and first limiting nails (53) are detachably connected inside the first limiting holes (51) and the second limiting holes (52).

4. The walking aid for critical illness rehabilitation according to claim 2, characterized in that: The third cylinder (323) is axially slidably connected to the first cylinder (321); a plurality of third limiting holes (54) are circumferentially provided on the upper edge of the third cylinder (323); a fourth limiting hole (55) is provided on the first cylinder (321); and second limiting pins (56) are detachably connected inside the third limiting holes (54) and the fourth limiting holes (55).

5. The walking aid for critical illness rehabilitation according to claim 1, characterized in that: The connecting frame (31) is slidably connected to the frame body (10) in a vertical direction, a fifth limiting hole (61) is provided on the connecting frame (31), and a plurality of sixth limiting holes (62) are provided on the frame body (10) in a vertical direction, and a first limiting pin (63) is slidably connected inside the fifth limiting hole (61) and the sixth limiting hole (62).

6. The walking aid for critical illness rehabilitation according to claim 1, characterized in that: A plurality of lifting tubes (111) are fixedly connected to the bottom of the support frame (11), and the lifting tubes (111) are slidably connected to the frame body (10) in the vertical direction. A plurality of seventh limiting holes (64) are provided on the lifting tubes (111) in the vertical direction, and an eighth limiting hole (65) is provided on the frame body (10). A second limiting pin (66) is slidably connected between the seventh limiting hole (64) and the eighth limiting hole (65).

7. The walking aid for critical illness rehabilitation according to claim 1, characterized in that: The handle (36) is rotatably connected to the support frame (11); a stopper (71) is provided on the outer side of the handle (36); and the stopper (71) is fixedly connected to the support frame (11).

8. The walking aid for critical illness rehabilitation according to claim 1, characterized in that: A first limiting ring (72) is provided on the outer side of the handle (36), and the first limiting ring (72) is fixedly connected to the support frame (11). A second limiting ring (73) is provided above the reel assembly (32), and the second limiting ring (73) is fixedly connected to the frame body (10). The first connecting rope (33) is passed through the inside of the first limiting ring (72) and the second limiting ring (73).

9. The walking aid for critical illness rehabilitation according to claim 1, characterized in that: A threaded barrel (74) is rotatably mounted on the top of the connecting plate (21), and the threaded barrel (74) is threadedly connected to the frame (10). A traction rope (75) is passed through the inner side of the threaded barrel (74), and the lower end of the traction rope (75) passes through the top of the connecting plate (21) and is fixedly connected to one end of the rotating plate (41) away from the brake plate (42), and the upper end of the traction rope (75) is rotatably mounted together with one end of the third connecting rope (35) away from the reel assembly (32).

10. The walking aid for critical illness rehabilitation according to claim 9, characterized in that: A fixing ring (211) is fixedly connected to the top of the connecting plate (21), a convex edge (741) is fixedly connected to the lower end of the threaded cylinder (74), the convex edge (741) is rotatably matched with the inner side of the fixing ring (211), a retaining ring (76) is provided above the convex edge (741), and the retaining ring (76) is fixedly connected to the fixing ring (211).

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