Lower limb rehabilitation exercise device based on air bag

Abstract

The invention relates to the technical field of medical instruments, and provides a lower limb rehabilitation exercise device based on an air bag, which comprises a wrapping mechanism, the lower limb of a patient extends into the wrapping mechanism during rehabilitation, the wrapping mechanism is provided with an air bag supporting mechanism and an adjusting mechanism, and the wrapping mechanism is used for placing and supporting the lower limb. The multiple air bag supporting mechanisms are arranged on the wrapping mechanism side by side, each air bag supporting mechanism comprises an annular air bag, the annular air bags make contact with the lower limbs of the patient, the air bag supporting mechanisms are used for supporting and extruding the lower limbs of the patient, and the adjusting mechanism communicates with the annular air bags. By means of the technical scheme, the lower limb rehabilitation device solves the problem that an existing lower limb rehabilitation device in the prior art is generally difficult to drive the lower limbs to conduct good rehabilitation exercise while protecting the lower limbs.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an airbag-based lower limb rehabilitation exercise device. Background Art

[0002] When the lower limbs are diseased and unable to move, rehabilitation training equipment is needed to massage the lower limbs or drive the lower limbs to exercise and rehabilitate the lower limbs. For example, the lower limbs have movement dysfunction caused by neurological diseases, such as cerebrovascular disease, spinal cord injury, neurodegenerative diseases, etc., or the joints, ligaments, and tendons are damaged, resulting in the lower limbs being unable to bend and move, or the elderly have decreased muscle strength, etc., resulting in the patient's lower limbs being unable to move actively. Long-term inactivity of the lower limbs will also lead to slow blood circulation in the lower limbs and symptoms such as muscle atrophy. Therefore, it is necessary to use lower limb rehabilitation equipment to massage the lower limbs and drive the lower limbs to bend and move.

[0003] Most of the existing lower limb rehabilitation devices are provided with a rotatable support arm, and the lower limb is bound to the support arm. By driving the support arm to rotate, the lower limb is driven to perform bending exercises. However, due to the binding of the lower limb, when the patient's lower limb is injured, the patient's injury will generally be affected or injured again. There are also existing rehabilitation devices for massaging the lower limbs, and there are devices that massage through air bags, but it is generally difficult to drive the lower limbs to perform good bending exercises. That is, it is difficult for the existing lower limb rehabilitation devices to prevent thrombosis through the massage effect of the air bags when massaging the patient's lower limbs, and it is also difficult to limit the blood flow of the lower limbs by squeezing the lower limbs. Therefore, in order to protect the patient's lower limbs while massaging and rehabilitating their lower limbs, we propose a lower limb rehabilitation exercise device based on air bags. Summary of the invention

[0004] The present invention proposes an airbag-based lower limb rehabilitation exercise device, which solves the problem that the existing lower limb rehabilitation devices in the related technology generally cannot meet the requirements of protecting the lower limbs and driving the lower limbs to perform good rehabilitation exercises at the same time.

[0005] The technical solution of the present invention is as follows: A lower limb rehabilitation exercise device based on airbags includes a wrapping mechanism, into which the patient's lower limbs are extended during rehabilitation, and an airbag supporting mechanism and an adjusting mechanism are arranged on the wrapping mechanism. The wrapping mechanism is used to place and support the lower limbs. There are multiple airbag supporting mechanisms, and the multiple airbag supporting mechanisms are arranged in parallel on the wrapping mechanism. The airbag supporting mechanism includes an annular airbag, which is used to support and squeeze the patient's lower limbs. The adjusting mechanism is arranged on the wrapping mechanism, the adjusting mechanism is connected to the annular airbag, and the adjusting mechanism is used to adjust the supporting force of the annular airbag on the patient's lower limbs.

[0006] The wrapping mechanism includes a lower frame, an upper frame and a tightening assembly. The lower frame is provided with a plurality of partition plates, each of which has a U-shaped opening, and the annular airbag is provided between adjacent partition plates. The upper frame is provided with a plurality of partition plates, each of which has a U-shaped opening, and the annular airbag is provided between adjacent partition plates. The upper frame and the lower frame are arranged opposite to each other, and the partition plates on the upper frame and the partition plates on the lower frame are fixedly connected. There are a plurality of tightening assemblies, each of which is provided on the upper frame and the lower frame, and each of which is connected to the annular airbag. The tightening assembly is used to tighten the annular airbag.

[0007] The annular airbag is configured as a cylindrical airbag, the upper frame and the lower frame are both fixedly connected to one end of the annular airbag, and one end of the annular airbag close to the partition plate passes through a through hole in the center of the annular airbag.

[0008] The tightening assembly includes a tightening hole, a tightening wheel, a tensioner, a support wheel and a traction rope, the tightening hole being opened on the upper frame and the lower frame, the tightening hole being arranged in the middle of two adjacent partition plates, and one end of the annular airbag passing through the central through hole of the annular airbag extends into the tightening hole, the upper frame and the lower frame are both rotatably connected with the tightening wheel, the tightening wheel is arranged on the side of the tightening hole, the upper frame and the lower frame are both fixedly connected with the tensioner, the output end of the tensioner is connected with the tightening wheel, the upper frame and the lower frame are both rotatably connected with the support wheel, the support wheel is arranged at the tightening hole, one end of the traction rope is fixedly connected with the tightening wheel, and the other end is fixedly connected with one end of the annular airbag extending into the tightening hole, and the traction rope tensioning sleeve is arranged on the support wheel.

[0009] An exhaust area is provided on the upper frame, and an air supply area is provided on the lower frame. The exhaust area and the air supply area are respectively arranged on two sides of the annular airbag.

[0010] The airbag support mechanism also includes a track, a clamping plate and a screw, wherein a plurality of the tracks are provided, and a plurality of the tracks are opened on both sides of the upper frame and the lower frame, and the tracks on the upper frame and the lower frame are arranged opposite to each other, and a plurality of clamping plates are provided, and slide grooves are opened on both ends of the clamping plates, and the slide grooves are slidably connected to the tracks, and the slide grooves at both ends of the clamping plates are respectively slidably connected to the tracks on the upper frame and the lower frame, and the upper frame and the lower frame are rotatably connected with the screw, and the screw passes through the clamping plate and is threadedly connected to the clamping plate, and the slide groove is arranged on the side of the clamping plate away from the annular airbag, and a gap is left between the clamping plate and the track.

[0011] The regulating mechanism includes an exhaust component and an air supply component, wherein the exhaust component is arranged on the exhaust area, the exhaust component is connected to a plurality of the annular airbags, and the exhaust component is used to control the exhaust of the plurality of the annular airbags, the air supply component is arranged on the air supply area, the air supply component is connected to a plurality of the annular airbags, and the air supply component is used to control the inflation of the plurality of the annular airbags, the exhaust component includes an exhaust pipe, a valve 1 and an exhaust main pipe, the exhaust pipe runs through the clamping plate, each of the annular airbags is connected to the exhaust pipe, and each exhaust pipe The valve one is fixedly connected to each of the annular airbags, the exhaust main pipe is fixedly connected in the exhaust area, the exhaust main pipe is communicated with the exhaust pipe, the air supply assembly includes an air supply pipe, valve two, an air supply main pipe and an air pump, the air supply pipe passes through the clamping plate, each of the annular airbags is connected to the air supply pipe, each of the air supply pipes is fixedly connected with valve two, the air supply main pipe is fixedly connected in the air supply area, the air supply main pipe is communicated with the air supply pipes, the air pump is fixedly installed in the air supply area, and the air outlet on the air pump is communicated with the air supply main pipe.

[0012] The working principle and beneficial effects of the present invention are: 1. In the present invention, an annular airbag is provided. When the annular airbag is ventilated and expanded, the part of the annular airbag connected to the upper frame or the lower frame will expand rapidly during inflation, and the other end of the annular airbag is turned over to the through hole in the center of the annular airbag. The airbag at this end is not expanded and opened by the gas. As the gas rushes in, the gas gradually expands more parts of the airbag. At the same time, the annular airbag stretches the traction rope, and the annular airbag becomes larger to support the patient's lower limbs. The traction rope pulls the unexpanded end of the annular airbag to prevent wrinkles on the surface of the airbag when there is not much gas in the airbag, which results in poor supporting effect. At the same time, the annular airbags on the upper and lower sides are inflated and contact each other, filling the space between the clamping plate and the partition plate, completely wrapping the legs, and reducing the pressure on the injured part of the patient's lower limbs. 2. In the present invention, an annular airbag is arranged to wrap the patient's lower limbs, and the annular airbag near the root of the lower limb is expanded to squeeze the patient's leg, so that the blood flow of the patient's lower limb can be restricted to exercise the lower limb. At the same time, the patient's lower limb is squeezed by sequentially inflating multiple annular airbags, and the squeezing force of the annular airbag on the patient's leg can be adjusted by adjusting the air pressure, thereby preventing the formation of blood clots; 3. In the present invention, the sizes of the multiple annular airbags and the squeezing force on the lower limbs can be adjusted through the linkage control of multiple valves 1 and 2. Through the change of the strength of the multiple airbags, the movement of the lower limb muscles can be simulated during the patient's lower limb rehabilitation. By squeezing the muscles in stages, the venous blood return can be assisted, thereby achieving the prevention of lower limb thrombosis and lower limb rehabilitation at the same time, and reducing the patient's rehabilitation time. 4. In the present invention, the blood flow of the patient can be restricted by squeezing the patient's lower limbs with the airbags near the roots of the patient's lower limbs. The traditional lower limb exercise restricts the blood flow by binding pressure bands on the lower limbs, while squeezing the airbags can restrict the blood flow of the lower limbs more evenly, which is gentler and more controllable. 5. In the present invention, by providing an airbag support mechanism, the patient's lower limbs can be wrapped only by the airbag, and massage can be performed by squeezing the annular airbag. The massage of the patient's legs can prevent the formation of lower limb venous thrombosis, and after wrapping a bandage on the patient's lower limbs, it can be used for blood restriction rehabilitation training, and the support of the annular airbag can drive the patient's lower limbs to bend, thereby achieving a better rehabilitation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention from another perspective; Figure 3 It is a partial cross-sectional structural schematic diagram of the cooperation between the lower frame and the airbag support mechanism in the present invention; Figure 4 It is a schematic diagram of the internal cross-sectional structure of the annular airbag in the present invention; Figure 5 It is a partial cross-sectional structural schematic diagram of the adjustment mechanism and the annular airbag in the present invention; Figure 6 It is a structural schematic diagram of the adjustment mechanism in the present invention; Figure 7 It is a structural schematic diagram of the second embodiment of the present invention.

[0015] In the figure: 100, wrapping mechanism; 101, annular airbag; 102, lower frame; 103, upper frame; 104, partition plate; 105, tightening hole; 106, tightening wheel; 107, tensioner; 108, support wheel; 109, traction rope; 110, exhaust area; 111, air supply area; 200, airbag support mechanism; 201, track; 202, clamping plate; 203, slide groove; 204, screw; 300, adjustment mechanism; 301, exhaust pipe; 302, valve one; 303, exhaust main pipe; 304, air supply pipe; 305, valve two; 306, air supply main pipe; 307, air pump. DETAILED DESCRIPTION

[0016] The following will be combined with 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.

[0017] Embodiment 1 like Figure 1 to Figure 6 As shown, this embodiment proposes a lower limb rehabilitation exercise device based on airbags, including a wrapping mechanism 100. The patient's lower limbs are extended into the wrapping mechanism 100 during rehabilitation. The wrapping mechanism 100 is provided with an airbag support mechanism 200 and an adjustment mechanism 300. The wrapping mechanism 100 is used to place and support the lower limbs. There are multiple airbag support mechanisms 200, and the multiple airbag support mechanisms 200 are arranged in parallel on the wrapping mechanism 100. The airbag support mechanism 200 includes an annular airbag 101. The airbag support mechanism 200 is used to support and squeeze the patient's lower limbs. The adjustment mechanism 300 is arranged on the wrapping mechanism 100, and the adjustment mechanism 300 is connected to the annular airbag 101. The adjustment mechanism 300 is used to adjust the support strength of the annular airbag 101 on the patient's lower limbs. In this embodiment, there are a total of eight airbag support mechanisms 200, four of which are arranged on the upper frame 103 and the lower frame 102 respectively.

[0018] like Figure 1~Figure 4As shown, the wrapping mechanism 100 includes a lower frame 102, an upper frame 103 and a tightening assembly, the lower frame 102 is provided with a plurality of partition plates 104, the partition plates 104 are provided with a U-shaped opening, and an annular airbag 101 is provided between adjacent partition plates 104, the upper frame 103 is provided with a plurality of partition plates 104, the partition plates 104 are provided with a U-shaped opening, and an annular airbag 101 is provided between adjacent partition plates 104, the upper frame 103 and the lower frame 102 are arranged opposite to each other, the partition plates 104 on the upper frame 103 and the partition plates 104 on the lower frame 102 are fixedly connected, and the tightening assembly is provided with a plurality of The upper frame 103 and the lower frame 102 are both provided with tightening components, each of which is connected to the annular airbag 101. The tightening components are used to tighten the annular airbag 101. The U-shaped openings on the upper frame 103 and the lower frame 102 are connected to each other to form a through hole. After the patient's lower limbs pass through the through hole, the annular airbags 101 on the upper frame 103 and the lower frame 102 are respectively located on the upper and lower sides of the lower limbs to massage and support the lower limbs. At the same time, the partition plate 104 can reduce the expansion amplitude of the annular airbag 101 to both sides after inflation, so that the annular airbag 101 can expand upward as much as possible to support the patient's legs.

[0019] like Figure 1~Figure 5 As shown, the annular airbag 101 is configured as a cylindrical airbag, and the upper frame 103 and the lower frame 102 are fixedly connected to one end of the annular airbag 101, and the end of the annular airbag 101 close to the partition plate 104 passes through the through hole in the center of the annular airbag 101. When the annular airbag 101 is ventilated and expanded, the part of the annular airbag 101 connected to the upper frame 103 or the lower frame 102 will expand rapidly during inflation, and the other end of the annular airbag 101 flips into the through hole in the center of the annular airbag 101. The airbag at this end is not expanded and opened by the gas. As the gas rushes in, the gas gradually expands more parts of the airbag, and at the same time, the annular airbag 101 stretches the traction rope 109, and the annular airbag becomes larger to support the patient's lower limbs. The traction of the traction rope 109 on the unexpanded end of the annular airbag 101 can prevent wrinkles from appearing on the surface of the airbag when there is not much gas in the airbag, thereby preventing the support effect from being poor.

[0020] like Figure 1 to Figure 6As shown, the tightening assembly includes a tightening hole 105, a tightening wheel 106, a tensioner 107, a support wheel 108 and a traction rope 109. The upper frame 103 and the lower frame 102 are both provided with a tightening hole 105, and the tightening hole 105 is arranged in the middle of two adjacent partition plates 104. One end of the annular airbag 101 that passes through the central through hole of the annular airbag 101 extends into the tightening hole 105. The upper frame 103 and the lower frame 102 are both rotatably connected with a tightening wheel 106, and the tightening wheel 106 is arranged on the side of the tightening hole 105. The upper frame 103 and the lower frame 102 are both fixedly connected with a tensioner 107, and the output end of the tensioner 107 is connected to the tightening wheel 106. The upper frame 103 and the lower frame 102 are both rotatably connected with a support wheel 108. The support wheel 108 is arranged at the tightening hole 105, one end of the traction rope 109 is fixedly connected to the tightening wheel 106, and the other end is fixedly connected to one end of the annular airbag 101 extending into the tightening hole 105. The traction rope 109 is tensioned and sleeved on the support wheel 108, and the tensioner 107 drives the tightening wheel 106 to rotate. The tightening wheel 106 pulls the traction rope 109, and the traction rope 109 pulls the annular airbag 101 through the support wheel 108. When the gas in the annular airbag 101 is discharged, the supporting force of the gas in the annular airbag 101 on the airbag becomes smaller, and the traction rope 109 pulls the end of the annular airbag 101 that is not expanded, and pulls more airbags into the tightening hole 105, thereby reducing the volume of the annular airbag 101 and ensuring the supporting force of the annular airbag 101.

[0021] like Figure 1~Figure 2 As shown, an exhaust area 110 is provided on the upper frame 103 , and an air supply area 111 is provided on the lower frame 102 . The exhaust area 110 and the air supply area 111 are respectively arranged on both sides of the annular airbag 101 .

[0022] like Figure 1~Figure 5As shown, the airbag support mechanism 200 also includes a track 201, a clamping plate 202 and a screw 204. The track 201 is provided with a plurality of tracks. Both sides of the upper frame 103 and the lower frame 102 are provided with a plurality of tracks 201. The tracks 201 on the upper frame 103 and the lower frame 102 are arranged opposite to each other. The clamping plate 202 is provided with a plurality of slide grooves 203, which are slidably connected to the track 201. The slide grooves 203 at both ends of the clamping plate 202 are respectively slidably connected to the tracks 201 on the upper frame 103 and the lower frame 102. The upper frame 103 and the lower frame 102 are rotatably connected with screws 204. The screws 204 It penetrates the clamping plate 202 and is threadedly connected with the clamping plate 202, and the slide groove 203 is set on the side of the clamping plate 202 away from the annular airbag 101. The clamping plate 202 does not contact the track 201. The position of the clamping plate 202 on the track 201 can be adjusted by rotating the screw rod 204, thereby adjusting the expandable space of the annular airbag 101 to cope with the different volumes of lower limbs of different patients. At the same time, the squeezing force of the annular airbag 101 is greater when the space is small. It can also be adjusted according to the conditions of different patients. At the same time, the clamping plate 202 does not contact the track 201 to prevent the annular airbag 101 from entering the gap between the track 201 and the slide groove 203 and being squeezed.

[0023] like Figure 2 and Figure 6As shown, the regulating mechanism 300 includes an exhaust component and an air supply component. The exhaust component is arranged on the exhaust area 110, and the exhaust component is connected to the plurality of annular airbags 101. The exhaust component is used to control the exhaust of the plurality of annular airbags 101. The air supply component is arranged on the air supply area 111, and the air supply component is connected to the plurality of annular airbags 101. The air supply component is used to control the inflation of the plurality of annular airbags 101. The exhaust component includes an exhaust pipe 301, a valve 302 and an exhaust main pipe 303. The exhaust pipe 301 passes through the clamping plate 202. Each Each annular airbag 101 is connected to an exhaust pipe 301, each exhaust pipe 301 is fixedly connected to a valve 1 302, an exhaust main pipe 303 is fixedly connected to the exhaust area 110, the exhaust main pipe 303 is connected to the exhaust pipe 301, and the air supply assembly includes an air supply pipe 304, a valve 2 305, an air supply main pipe 306 and an air pump 307, the air supply pipe 304 runs through the clamping plate 202, each annular airbag 101 is connected to an air supply pipe 304, each air supply pipe 304 is fixedly connected to a valve 2 305, and the air supply main pipe 306 is fixedly connected to the exhaust area 110. The air supply main pipe 306 is connected to the air supply pipe 304, and the air pump 307 is fixedly installed in the air supply area 111. The air outlet of the air pump 307 is connected to the air supply main pipe 306. The patient's lower limbs are supported by eight annular airbags 101 on the upper and lower sides. The air intake and pressure of each annular airbag 101 are adjusted by the air pump 307 and valve 1 302 and valve 2 305, thereby controlling the support and compression of the patient's lower limbs. When the annular airbag 101 in the center of the lower frame 102 is expanded, the air intake and pressure of each annular airbag 101 are adjusted. The annular airbag 101 in the center of the upper frame 103 expands and contracts, and the patient's legs will bend at this time. Similarly, when multiple annular airbags 101 expand and contract in sequence, the patient's legs can be squeezed and massaged. The air intake is controlled by valve 2 305, and the air outlet is controlled by valve 1 302, so as to control the expansion and contraction of the annular airbag 101. The annular airbags 101 on the upper and lower sides are inflated and contact with each other, filling the space between the clamping plate 202 and the partition plate 104, so as to completely wrap the legs and reduce the pressure on the injured part of the patient's lower limbs.

[0024] When the patient's lower limbs need passive training, that is, the legs are pressed and massaged by the expansion of the annular airbags 101, the annular airbags 101 perform pulse squeezing massage. The massage is that all the annular airbags 101 from the patient's feet to the thigh side are squeezed in sequence and in a pulsed manner, which plays a function similar to a muscle pump, promotes blood return to the lower limbs, and avoids lower limb venous thrombosis.

[0025] When applied to blood restriction training, the annular airbag 101 is inflated to slightly squeeze the upper part of the patient's thigh to block the blood flow in the lower limbs. At this time, low-intensity training can achieve the effect of high-intensity training, which helps to promote the recovery of skeletal muscles. At the same time, other medical equipment can also be used to feedback the blood blockage situation, and the air pressure in the annular airbag 101 can be further adjusted to adjust the patient's blood pressure blockage degree.

[0026] The working principle of the airbag-based lower limb rehabilitation exercise device is as follows: the patient's lower limbs are inserted into the through holes on the partition plate 104, valve two 305 is opened and valve one 302 is closed, and the air pump 307 ventilates the annular airbag 101 through the air supply pipe 304, and the annular airbag 101 expands to support the lower limbs. By controlling multiple valves one 302 and valve two 305, the annular airbags 101 at multiple different positions can be controlled to support and squeeze the patient's lower limbs respectively, and the patient's lower limbs are massaged by squeezing, and the lower limbs are driven to perform bending movements by different support strengths.

[0027] Embodiment 2 like Figure 7 As shown, the existing device for rehabilitating the patient's legs is fixed on the bed and is used to place the patient's legs. After a sliding seat is set on the lower frame 102, the bottom of the airbag-based lower limb rehabilitation exercise device can be slidably connected to the existing rehabilitation device and slid according to the patient's position to facilitate the patient's use.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lower limb rehabilitation exercise device based on an airbag, characterized in that: include: A wrapping mechanism (100), wherein the patient's lower limbs are inserted into the wrapping mechanism (100) during rehabilitation, wherein the wrapping mechanism (100) is provided with an airbag support mechanism (200) and an adjustment mechanism (300), and the wrapping mechanism (100) is used to place and support the lower limbs; A plurality of the airbag support mechanisms (200) are provided, and the plurality of the airbag support mechanisms (200) are arranged in parallel on the wrapping mechanism (100), the airbag support mechanism (200) comprising an annular airbag (101), and the airbag support mechanism (200) is used to support and compress the patient's lower limbs; The adjustment mechanism (300) is arranged on the wrapping mechanism (100), the adjustment mechanism (300) is in communication with the annular airbag (101), and the adjustment mechanism (300) is used to adjust the support strength of the annular airbag (101) on the patient's lower limbs; The wrapping mechanism (100) comprises: A lower frame (102), wherein a plurality of partition plates (104) are provided on the lower frame (102), a U-shaped opening is provided on the partition plates (104), and the annular airbags (101) are provided between adjacent partition plates (104); An upper frame (103), wherein a plurality of partition plates (104) are arranged on the upper frame (103), each partition plate (104) is provided with a U-shaped opening, and the annular airbag (101) is arranged between adjacent partition plates (104); the upper frame (103) and the lower frame (102) are arranged opposite to each other, and the partition plates (104) on the upper frame (103) and the partition plates (104) on the lower frame (102) are fixedly connected.

2. The airbag-based lower limb rehabilitation exercise device according to claim 1, characterized in that: The wrapping mechanism (100) further comprises: A tightening assembly, wherein a plurality of tightening assemblies are provided, and the upper frame (103) and the lower frame (102) are both provided with the tightening assemblies, and each of the tightening assemblies is connected to the annular airbag (101), and the tightening assemblies are used to tighten the annular airbag (101).

3. The airbag-based lower limb rehabilitation exercise device according to claim 2, characterized in that: The annular airbag (101) is configured as a cylindrical airbag, the upper frame (103) and the lower frame (102) are both fixedly connected to one end of the annular airbag (101), and one end of the annular airbag (101) close to the partition plate (104) passes through a through hole in the center of the annular airbag (101).

4. The airbag-based lower limb rehabilitation exercise device according to claim 3, characterized in that: The tightening assembly comprises: A tightening hole (105), wherein the upper frame (103) and the lower frame (102) are both provided with the tightening hole (105), the tightening hole (105) being arranged in the middle of two adjacent partition plates (104), and one end of the annular airbag (101) passing through the central through hole of the annular airbag (101) extends into the tightening hole (105); A tightening wheel (106), the upper frame (103) and the lower frame (102) are both rotatably connected to the tightening wheel (106), and the tightening wheel (106) is arranged on the side of the tightening hole (105); A tensioner (107), the upper frame (103) and the lower frame (102) are both fixedly connected with the tensioner (107), and the output end of the tensioner (107) is connected to the tightening wheel (106); A support wheel (108), the upper frame (103) and the lower frame (102) are both rotatably connected to the support wheel (108), and the support wheel (108) is arranged at the tightening hole (105); A traction rope (109), one end of the traction rope (109) being fixedly connected to the tightening wheel (106), and the other end of the traction rope (109) being fixedly connected to one end of the annular airbag (101) extending into the tightening hole (105), and the traction rope (109) being tensioned and sleeved on the support wheel (108).

5. The airbag-based lower limb rehabilitation exercise device according to claim 4, characterized in that: An exhaust area (110) is provided on the upper frame (103), and an air supply area (111) is provided on the lower frame (102); the exhaust area (110) and the air supply area (111) are respectively arranged on two sides of the annular airbag (101).

6. The airbag-based lower limb rehabilitation exercise device according to claim 5, characterized in that: The airbag support mechanism (200) further comprises: A track (201), wherein a plurality of the tracks (201) are provided, and a plurality of the tracks (201) are provided on both sides of the upper frame (103) and the lower frame (102), and the tracks (201) on the upper frame (103) and the lower frame (102) are arranged opposite to each other; A clamping plate (202), wherein a plurality of the clamping plates (202) are provided, and a slide groove (203) is provided on both ends of the clamping plate (202), and the slide groove (203) is slidably connected to the track (201), and the slide grooves (203) at both ends of the clamping plate (202) are slidably connected to the track (201) on the upper frame (103) and the lower frame (102) respectively; A screw rod (204) is rotatably connected to both the upper frame (103) and the lower frame (102); the screw rod (204) passes through the clamping plate (202) and is threadedly connected to the clamping plate (202).

7. The airbag-based lower limb rehabilitation exercise device according to claim 6, characterized in that: The regulating mechanism (300) comprises: an exhaust component, the exhaust component being arranged on the exhaust area (110), the exhaust component being connected to the plurality of annular airbags (101), and the exhaust component being used to control the exhaust of the plurality of annular airbags (101); An air supply component, the air supply component is arranged on the air supply area (111), the air supply component is connected to the plurality of annular airbags (101), and the air supply component is used to control the inflation of the plurality of annular airbags (101).

8. The airbag-based lower limb rehabilitation exercise device according to claim 7, characterized in that: The exhaust assembly comprises: An exhaust pipe (301), the exhaust pipe (301) passing through the clamping plate (202), and each of the annular airbags (101) is connected to the exhaust pipe (301); Valve one (302), each exhaust pipe (301) is fixedly connected to the valve one (302); An exhaust manifold (303), the exhaust manifold (303) being fixedly connected in the exhaust area (110), and the exhaust manifold (303) being in communication with the exhaust pipe (301).

9. The airbag-based lower limb rehabilitation exercise device according to claim 8, characterized in that: The gas supply assembly comprises: an air supply pipe (304), the air supply pipe (304) passing through the clamping plate (202), and each of the annular airbags (101) is connected to the air supply pipe (304); Valve 2 (305), each of the air supply pipes (304) is fixedly connected to the valve 2 (305); An air supply main pipe (306), the air supply main pipe (306) being fixedly connected in the air supply area (111), the air supply main pipe (306) being in communication with the air supply pipe (304); An air pump (307), the air pump (307) is fixedly installed in the air supply area (111), and the air outlet on the air pump (307) is connected to the air supply main pipe (306).

10. The airbag-based lower limb rehabilitation exercise device according to claim 9, characterized in that: The slide groove (203) is arranged on a side of the clamping plate (202) away from the annular airbag (101), and a gap is left between the clamping plate (202) and the track (201).

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