An angle-adjustable orthopedic rehabilitation exercise device

Abstract

This invention discloses an adjustable-angle orthopedic rehabilitation exercise device, belonging to the field of medical device technology. The invention includes a base, two sets of adjustment mechanisms, and a support mechanism. The adjustment mechanism includes a swing plate, with a thigh support plate and a hinged calf support plate above the swing plate. A threaded rod and a threaded block are provided on the top surface of the swing plate. The threaded block is hinged to the calf support plate via a guide rod. A toothed ring on the rotating rod meshes with an arc-shaped toothed plate. The rotating rod drives the threaded rod to rotate via a bevel gear set, causing the threaded block to slide. The angle of the calf support plate is steplessly adjusted via the guide rod. The swing plate can rotate as a whole around its axis, achieving overall angle adjustment of the thigh support plate. Through the precise linkage of the swing plate, rotating rod, bevel gear set, threaded rod, threaded block, and guide rod, the angle between the thigh and calf support plates can be adjusted in real time during the patient's exercise, enabling continuous flexion and extension movements of the knee joint. This avoids the limitations of single-angle exercise, meets the physiological requirements of joint rehabilitation, and significantly improves the rehabilitation effect.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an adjustable-angle orthopedic rehabilitation exercise device. Background Technology

[0002] In orthopedic clinical treatment, scientific and progressive rehabilitation exercises are crucial for patients with lower limb fractures, joint injuries, or those in the postoperative recovery period. Correct rehabilitation exercises can not only prevent complications such as muscle atrophy, joint stiffness, and deep vein thrombosis, but also promote fracture healing and limb function recovery.

[0003] However, there are various lower limb rehabilitation exercise devices on the market. Some simple devices can only provide static support or simple lifting functions and cannot be flexibly adjusted according to the patient's different rehabilitation stages, limb length and joint range of motion. For example, although some devices are equipped with thigh support and calf support, the angle between the two is often fixed or the adjustment method is complicated, making it difficult to achieve active or passive flexion and extension angle changes of the patient's knee joint during exercise, thus affecting the rehabilitation effect. In order to solve the above problems, the inventors have proposed an adjustable angle orthopedic rehabilitation exercise device to solve the above problems. Summary of the Invention

[0004] To address the problem that the angle between the thigh support and the calf support is often fixed or has a complex adjustment method, making it difficult to achieve active or passive flexion and extension angle changes in the patient's knee joint during exercise, the present invention aims to provide an adjustable-angle orthopedic rehabilitation exercise device.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: an adjustable angle orthopedic rehabilitation exercise device, including a base, a seat fixedly mounted on the top surface of the base, an adjustment mechanism above the base, two sets of adjustment mechanisms, each adjustment mechanism including a swing plate, a rotating shaft fixedly mounted on the bottom surface of the swing plate, the rotating shaft rotatably mounted inside the base, a support mechanism above the swing plate, the support mechanism including a positioning rod, a thigh support plate fixedly mounted on the top surface of the positioning rod, a calf support plate hinged to one side of the thigh support plate, an ear plate fixedly mounted on the top surface of the swing plate, a threaded rod rotatably mounted inside the ear plate, a threaded block threadedly mounted on the outer surface of the threaded rod, a guide rod hinged to the top surface of the threaded block, and the end of the guide rod away from the threaded block hinged to the bottom surface of the calf support plate; a rotating rod slidably mounted inside the base, a toothed ring fixedly mounted on the outer surface of the rotating rod, and so on. The base has an arc-shaped toothed plate fixedly mounted on its top surface, which meshes with a toothed ring. A housing is fixedly mounted on the top surface of the swing plate. The rotating rod is rotatably mounted inside the housing. A second bevel gear is fixedly mounted on the top surface of the rotating rod. One end of the threaded rod is rotatably mounted inside the housing. A first bevel gear is fixedly mounted inside the housing at the other end of the threaded rod. The first bevel gear meshes with the second bevel gear. A rotating groove is formed inside the base. A rotating shaft is rotatably mounted inside the rotating groove. A limiting ring is fixedly fitted on the outer surface of the rotating shaft. A limiting groove is formed inside the base. The limiting ring is rotatably mounted inside the limiting groove. A movable plate is rotatably mounted on the bottom surface of the rotating rod. A movable groove is formed inside the base. The movable plate is slidably mounted inside the movable groove. A slider is fixedly mounted on the bottom surface of the threaded block. The slider is slidably mounted inside the swing plate. A sliding groove is formed inside the swing plate. A sliding rod is fixedly mounted inside the sliding groove. The slider is slidably fitted onto the outer surface of the sliding rod.

[0006] Preferably, a strap is fixedly provided on one side of both the thigh support and the calf support, one end of the strap is fixedly provided with a Velcro surface, and a Velcro surface is fixedly provided on the side of the thigh support and the calf support away from the strap, wherein the Velcro surface and the Velcro surface can be adhered together.

[0007] Preferably, the base is fixedly provided with support mechanisms on both sides. The support mechanism includes a support rod, a U-shaped handle is slidably provided in the support rod, a positioning groove is opened in the U-shaped handle, a movable rod is slidably inserted in the positioning groove, a positioning ring is fixedly provided at one end of the movable rod, a spring is fixedly connected between the positioning groove and the positioning ring, and a through groove is opened in the support rod. The number of through grooves is multiple and arranged in a vertical array. The movable rod can be slidably inserted into one of the through grooves.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this invention, through the precise linkage of the swing plate, rotating rod, first bevel gear, second bevel gear, threaded rod, threaded block and guide rod, the angle between the thigh support plate and the calf support plate can be changed in real time and steplessly during the patient's exercise. This allows the patient's knee joint to perform continuous flexion and extension movements, avoiding the limitations of single-angle exercise, which is more in line with the physiological requirements of joint function rehabilitation and significantly improves the rehabilitation effect. 2. In this invention, after the patient's leg is fixed, he / she can exert force on his / her own to achieve active exercise; or when the muscle strength is insufficient, the medical staff can manually push the swing board to drive the patient's lower leg to swing through the same linkage mechanism to achieve passive exercise. One device can simultaneously meet the needs of early passive activity and later active resistance training, and adapt to the patient's complete rehabilitation process from flaccid paralysis to recovery. 3. In this invention, the meshing of the toothed ring and the arc-shaped toothed plate, as well as the threaded pair between the threaded rod and the threaded block, all have self-locking characteristics. When the swing plate is adjusted to the required angle or the patient stops exerting force during exercise, the entire mechanism can stably maintain the current posture and will not slip off due to gravity or external force, ensuring safe and stable exercise of the knee joint at the set angle and avoiding secondary damage caused by unexpected angle changes. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the swing plate structure of the present invention; Figure 3 This is a schematic diagram of the adjustment mechanism structure of the present invention; Figure 4 This is a schematic diagram of the base structure of the present invention; Figure 5 This is a schematic diagram of the support mechanism structure of the present invention; Figure 6 This is a schematic diagram of the support mechanism structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle.

[0011] In the diagram: 1. Base; 2. Adjustment mechanism; 3. Support mechanism; 4. Support mechanism; 101. Rotary groove; 102. Limiting groove; 103. Movable groove; 104. Seat; 201. Swing plate; 202. Slide groove; 203. Rotating shaft; 204. Limiting ring; 205. Ear plate; 206. Threaded rod; 207. Threaded block; 208. Guide rod; 209. First bevel gear; 210. Rotating rod; 211. Second bevel gear; 2 12. Toothed ring; 213. Movable plate; 214. Housing; 215. Arc-shaped toothed plate; 216. Slide rod; 217. Slider; 301. Positioning rod; 302. Thigh support plate; 303. Lower leg support plate; 304. Strap; 305. Velcro surface; 306. Velcro surface; 401. Support rod; 402. Through groove; 403. U-shaped grip; 404. Positioning groove; 405. Movable rod; 406. Positioning ring; 407. Spring. Detailed Implementation

[0012] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0013] Example: Figure 1-7As shown, this invention provides an adjustable-angle orthopedic rehabilitation exercise device, including a base 1. A seat 104 is fixedly mounted on the top surface of the base 1. An adjustment mechanism 2 is provided above the base 1. The adjustment mechanism 2 is provided in two sets. The adjustment mechanism 2 includes a swing plate 201. A rotating shaft 203 is fixedly mounted on the bottom surface of the swing plate 201. The rotating shaft 203 is rotatably mounted inside the base 1. A support mechanism 3 is provided above the swing plate 201. The support mechanism 3 includes a positioning rod 301. A thigh support plate 302 is fixedly mounted on the top surface of the positioning rod 301. A calf support plate 303 is hinged to one side of the thigh support plate 302. An ear plate 205 is fixedly mounted on the top surface of the swing plate 201. A threaded rod 206 is rotatably mounted inside the ear plate 205. The outer surface of the threaded rod 206 is threaded with a... A threaded block 207 has a guide rod 208 hinged to its top surface. One end of the guide rod 208, away from the threaded block 207, is hinged to the bottom surface of the lower leg support plate 303. A rotating rod 210 slides within the base 1. A toothed ring 212 is fixedly fitted onto the outer surface of the rotating rod 210. An arc-shaped toothed plate 215 is fixedly fitted onto the top surface of the base 1, meshing with the toothed ring 212. A housing 214 is fixedly fitted onto the top surface of the swing plate 201. The rotating rod 210 rotatably resides within the housing 214. A second bevel gear 211 is fixedly fitted onto the top surface of the rotating rod 210. One end of a threaded rod 206 rotatably resides within the housing 214. A first bevel gear 209 is fixedly fitted onto one end of the threaded rod 206 within the housing 214. The first bevel gear 209 meshes with the first bevel gear 209. Two bevel gears 211 mesh. A rotating groove 101 is provided inside the base 1. A rotating shaft 203 is rotatably disposed within the rotating groove 101. A limiting ring 204 is fixedly sleeved on the outer surface of the rotating shaft 203. A limiting groove 102 is provided inside the base 1. The limiting ring 204 is rotatably disposed within the limiting groove 102. A movable plate 213 is rotatably disposed on the bottom surface of the rotating rod 210. A movable groove 103 is provided inside the base 1. The movable plate 213 is slidably disposed within the movable groove 103. A slider 217 is fixedly disposed on the bottom surface of the threaded block 207. The slider 217 is slidably disposed within the swing plate 201. A sliding groove 202 is provided inside the swing plate 201. A sliding rod 216 is fixedly disposed within the sliding groove 202. The slider 217 is slidably sleeved on the outer surface of the sliding rod 216. The rotation is controlled by the patient's leg actively swinging or by another person. The swing plate 201 is manually pushed to swing to both sides. The rotating shaft 203 on the bottom surface of the swing plate 201 is rotatably installed in the rotating groove 101 of the base 1. The limiting ring 204 on the rotating shaft 203 rotates in the limiting groove 102 to ensure that the swing plate 201 swings smoothly around the rotating shaft 203 without falling off. When the swing plate 201 swings to one side, the movable plate 213 on the bottom surface of the rotating rod 210 slides in the movable groove 103 of the base 1, so that the rotating rod 210 can move with the swing plate 201. Since the toothed ring 212 is fixedly sleeved on the outer surface of the rotating rod 210 and meshes with the arc-shaped toothed plate 215 on the top surface of the base 1, the swing plate 201 will drive the rotating rod 210 to rotate during the swing. When the rotating rod 210 rotates in the housing 214...The second bevel gear 211 on its top surface rotates, and the second bevel gear 211 meshes with the first bevel gear 209 at one end of the threaded rod 206, transmitting power to the threaded rod 206. The threaded rod 206 is rotatably mounted in the ear plate 205, and a threaded block 207 is threadedly fitted on its outer surface. A slider 217 is fixed on the bottom surface of the threaded block 207. The slider 217 is slidably fitted on the slide rod 216 in the slide groove 202, restricting the rotational freedom of the threaded block 207, so that it can only move linearly along the slide rod 216. Therefore, the rotation of the threaded rod 206 will drive the threaded block 207 to move along the length direction of the swing plate 201. A guide rod 208 is hinged to the top surface of the 07, and the other end of the guide rod 208 is hinged to the bottom surface of the calf support plate 303. When the swing plate 201 swings to one side, the aforementioned linkage causes the threaded block 207 to move away from the calf support plate 303, and the guide rod 208 pulls the calf support plate 303 downward, thereby increasing the angle between the thigh support plate 302 and the calf support plate 303, allowing the knee joint to extend. When the swing plate 201 swings in the opposite direction, the linkage causes the threaded block 207 to move closer to the calf support plate 303, and the guide rod 208 pushes the calf support plate 303 upward, reducing the angle and allowing the knee joint to flex.

[0014] A strap 304 is fixedly provided on one side of both the thigh support plate 302 and the calf support plate 303. A Velcro surface 305 is fixedly provided at one end of the strap 304. A Velcro surface 306 is fixedly provided on the side of the thigh support plate 302 and the calf support plate 303 away from the strap 304. The Velcro surface 305 and the Velcro surface 306 can be adhered together.

[0015] By adopting the above technical solution, the thigh and calf are placed on the thigh support plate 302 and the calf support plate 303 respectively. Through the binding strap 304 and the adhesion of its magic fur surface 305 and magic adhesive surface 306, the patient's lower limbs are reliably fixed on the support mechanism 3 to prevent the limbs from slipping during exercise.

[0016] Support mechanisms 4 are fixedly provided on both sides of the base 1. The support mechanism 4 includes a support rod 401. A U-shaped handle 403 is slidably provided in the support rod 401. A positioning groove 404 is opened in the U-shaped handle 403. A movable rod 405 is slidably inserted in the positioning groove 404. A positioning ring 406 is fixedly provided at one end of the movable rod 405. A spring 407 is fixedly connected between the positioning groove 404 and the positioning ring 406. A through groove 402 is opened in the support rod 401. The number of through grooves 402 is multiple and arranged in a vertical array. The movable rod 405 can be slidably inserted into one of the through grooves 402.

[0017] By adopting the above technical solution, pressing the movable rod 405 compresses the spring 407, causing the movable rod 405 to disengage from the through groove 402. The movable rod 405 is then pulled upwards, and the U-shaped handle 403 is moved up and down to a suitable height. The movable rod 405 is then released, and the spring 407 returns to its original position, allowing the movable rod 405 to be inserted into the corresponding through groove 402. This enables quick adjustment and locking of the handle height, making it convenient for patients of different heights to use.

[0018] Working principle: When this adjustable angle orthopedic rehabilitation exercise device is working, the patient first sits on the seat 104 fixed on the top surface of the base 1, and places the thigh and calf on the thigh support plate 302 and the calf support plate 303 respectively. Through the binding strap 304 and the Velcro surface 305 and Velcro surface 306 on it, the patient's lower limbs are reliably fixed on the support mechanism 3 to prevent the limbs from slipping during exercise. After the patient's leg is immobilized, the swing plate 201 is swung to both sides by the patient's own effort or by someone else's manual pushing. The rotating shaft 203 on the bottom surface of the swing plate 201 is rotatably installed in the rotating groove 101 of the base 1. The limiting ring 204 on the rotating shaft 203 rotates in the limiting groove 102, ensuring that the swing plate 201 swings smoothly around the rotating shaft 203 without falling out. When the swing plate 201 swings to one side, the movable plate 213 on the bottom surface of the rotating rod 210 slides in the movable groove 103 of the base 1, allowing the rotating rod 210 to move in tandem with the rotating shaft 201. Moving together with the swing plate 201, the toothed ring 212 is fixedly sleeved on the outer surface of the rotating rod 210, and the toothed ring 212 meshes with the arc-shaped toothed plate 215 on the top surface of the base 1. During the swinging process, the swing plate 201 will drive the rotating rod 210 to rotate. When the rotating rod 210 rotates inside the housing 214, it will drive the second bevel gear 211 on its top surface to rotate. The second bevel gear 211 meshes with the first bevel gear 209 at one end of the threaded rod 206, transmitting power to the threaded rod 206. The threaded rod 206 is rotatably mounted. Inside the ear plate 205, a threaded block 207 is threadedly fitted onto its outer surface. A slider 217 is fixed to the bottom surface of the threaded block 207. The slider 217 is slidably fitted onto the slide rod 216 in the slide groove 202, restricting the rotational freedom of the threaded block 207 so that it can only move linearly along the slide rod 216. Therefore, the rotation of the threaded rod 206 will drive the threaded block 207 to move along the length direction of the swing plate 201. A guide rod 208 is hinged to the top surface of the threaded block 207, and the other end of the guide rod 208 is hinged to the lower leg support plate 303. On the bottom surface, when the swing plate 201 swings to one side, the aforementioned linkage causes the threaded block 207 to move away from the calf support plate 303, and the guide rod 208 pulls the calf support plate 303 to swing downward, thereby increasing the angle between the thigh support plate 302 and the calf support plate 303, and extending the knee joint; when the swing plate 201 swings to the other side in the opposite direction, the linkage causes the threaded block 207 to move closer to the calf support plate 303, and the guide rod 208 pushes the calf support plate 303 upward, reducing the angle and flexing the knee joint. By reciprocating the swing plate 201, the lower leg support plate 303 can be driven to swing up and down relative to the thigh support plate 302, thereby achieving passive flexion and extension exercises of the patient's knee joint. During the adjustment process, due to the meshing of the toothed ring 212 and the arc-shaped toothed plate 215 and the self-locking characteristics of the threaded pair, the swing plate 201 can be stably maintained after swinging to any position, ensuring that the exercise angle is constant and controllable. In addition, the support mechanisms 4 fixed on both sides of the base 1 are used by the patient to hold onto and maintain balance during exercise. A U-shaped grip 403 is slidably provided in the support rod 401. The U-shaped grip 403 has multiple sets of positioning grooves 404. A movable rod 405 is slidably inserted in the positioning grooves 404. A positioning ring 406 is fixed to one end of the movable rod 405. A spring 407 is provided between the positioning ring 406 and the positioning groove 404. Multiple through grooves 402 are vertically arranged on the support rod 401. Pressing the movable rod 405 compresses the spring 407, causing the movable rod 405 to disengage from the through groove 402. Pulling the movable rod 405 upwards, and then moving the U-shaped grip 403 up and down to a suitable height, releasing the movable rod 405, and the spring 407 returns to its original position, allowing the movable rod 405 to insert into the corresponding through groove 402. This enables quick adjustment and locking of the grip height, making it convenient for patients of different heights to use.

[0019] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0020] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An adjustable-angle orthopedic rehabilitation exercise device, comprising a base (1), characterized in that: A seat (104) is fixedly mounted on the top surface of the base (1). An adjustment mechanism (2) is provided above the base (1). The adjustment mechanism (2) consists of two sets. Each adjustment mechanism (2) includes a swing plate (201). A rotating shaft (203) is fixedly mounted on the bottom surface of the swing plate (201). The rotating shaft (203) is rotatably mounted inside the base (1). A support mechanism (3) is provided above the swing plate (201). The support mechanism (3) includes a positioning rod (301). The top surface of the positioning rod (301) is fixedly mounted on the bottom surface of the swing plate (201). A thigh support plate (302) is fixedly provided, and a calf support plate (303) is hinged to one side of the thigh support plate (302). An ear plate (205) is fixedly provided on the top surface of the swing plate (201). A threaded rod (206) is rotatably provided inside the ear plate (205). A threaded block (207) is threaded on the outer surface of the threaded rod (206). A guide rod (208) is hinged to the top surface of the threaded block (207). One end of the guide rod (208) away from the threaded block (207) is hinged to the bottom surface of the calf support plate (303). A rotating rod (210) is slidably provided inside the base (1). A toothed ring (212) is fixedly sleeved on the outer surface of the rotating rod (210). An arc-shaped toothed plate (215) is fixedly provided on the top surface of the base (1). The arc-shaped toothed plate (215) meshes with the toothed ring (212). A housing (214) is fixedly provided on the top surface of the swing plate (201). The rotating rod (210) is rotatably disposed inside the housing (214). A second bevel gear (211) is fixedly provided on the top surface of the rotating rod (210). One end of the threaded rod (206) is rotatably disposed inside the housing (214). A first bevel gear (209) is fixedly provided at one end of the threaded rod (206) inside the housing (214). The first bevel gear (209) meshes with the second bevel gear (211).

2. The adjustable-angle orthopedic rehabilitation exercise device as described in claim 1, characterized in that, The base (1) has a rotating groove (101) inside, and the rotating shaft (203) is rotatably disposed in the rotating groove (101).

3. The adjustable-angle orthopedic rehabilitation exercise device as described in claim 2, characterized in that, A limiting ring (204) is fixedly sleeved on the outer surface of the rotating shaft (203), and a limiting groove (102) is opened in the base (1). The limiting ring (204) is rotatably disposed in the limiting groove (102).

4. The adjustable-angle orthopedic rehabilitation exercise device as described in claim 1, characterized in that, The bottom surface of the rotating rod (210) is provided with a movable plate (213), and the base (1) is provided with a movable groove (103), and the movable plate (213) is slidably disposed in the movable groove (103).

5. The adjustable-angle orthopedic rehabilitation exercise device as described in claim 1, characterized in that, The bottom surface of the threaded block (207) is fixedly provided with a slider (217), which is slidably disposed in the swing plate (201).

6. The adjustable-angle orthopedic rehabilitation exercise device as described in claim 5, characterized in that, The swing plate (201) has a groove (202) inside, and a slide rod (216) is fixedly installed in the groove (202). The slider (217) is slidably sleeved on the outer surface of the slide rod (216).

7. The adjustable-angle orthopedic rehabilitation exercise device as described in claim 1, characterized in that, One side of the thigh support plate (302) and the calf support plate (303) is fixedly provided with a strap (304), and one end of the strap (304) is fixedly provided with a magic fur surface (305).

8. The adjustable-angle orthopedic rehabilitation exercise device as described in claim 7, characterized in that, The thigh support plate (302) and calf support plate (303) are fixedly provided with a Velcro surface (306) on the side away from the strap (304), and the Velcro surface (305) can be adhered to the Velcro surface (306).

9. The adjustable-angle orthopedic rehabilitation exercise device as described in claim 1, characterized in that, The base (1) is fixedly provided with support mechanisms (4) on both sides. The support mechanism (4) includes a support rod (401) and a U-shaped handle (403) is slidably provided inside the support rod (401).

10. The adjustable-angle orthopedic rehabilitation exercise device as described in claim 9, characterized in that, A positioning groove (404) is provided in the U-shaped handle (403). A movable rod (405) is slidably inserted in the positioning groove (404). A positioning ring (406) is fixedly provided at one end of the movable rod (405). A spring (407) is fixedly connected between the positioning groove (404) and the positioning ring (406). A through groove (402) is provided in the support rod (401). The number of through grooves (402) is multiple and arranged in a vertical array. The movable rod (405) can be slidably inserted into one of the through grooves (402).

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