Lower limb exercise device for elderly VTE high-risk patient
By using an adjustable threaded rod and a rebound assembly, the problem of fixed pedal angle in lower limb exercise devices for elderly patients at high risk of VTE was solved, enabling flexible adjustment of pedal angle and spacing, thus improving user comfort and exercise effectiveness.
Patent Information
- Application Number
- CN202520164021.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-24
AI Technical Summary
The pedal angles of existing lower limb exercise devices for elderly patients at high risk of VTE are fixed, which cannot adapt to the joint stiffness or conditions of different elderly people, resulting in discomfort and joint pain, and affecting the exercise effect.
A lower limb exercise device for elderly patients at high risk of VTE was designed. Through an adjustable threaded rod and a rebound assembly, it allows users to adjust the pedal angle and spacing to suit the needs of different users, reduce joint pressure and increase comfort.
It allows for flexible adjustment of the pedal angle and spacing, improving user comfort, reducing joint pain and discomfort, and enhancing the effectiveness of exercise.
Smart Images

Figure CN223861231U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rehabilitation equipment technology, and in particular to a lower limb exercise device for elderly patients at high risk of VTE. Background Technology
[0002] Elderly patients who are bedridden for long periods, especially those who are ill, undergoing surgery, or in recovery, are unable to walk and exercise normally. Lack of lower limb activity can lead to muscle atrophy in the lower limbs, poor venous blood flow, and a high risk of thrombosis. By using a lower limb exercise device for elderly patients at high risk of VTE, which simulates walking, flexion and extension movements, it can help promote blood return in the lower limbs and prevent thrombosis.
[0003] In use, the device is usually first fixed in a designated position to prevent the elderly from shifting when using it. Then, the elderly sit on the device with their feet on the pedals and alternately step on the pedals to simulate walking, bending and stretching movements, which helps promote blood flow in the lower limbs and prevents the formation of blood clots.
[0004] The pedal angle on the device is usually fixed, but some elderly people may have different ankle inclinations due to arthritis, joint stiffness or other conditions. When these elderly people use the device, they may feel uncomfortable, and prolonged use may lead to joint pain and other problems. Therefore, a lower limb exercise device for elderly patients at high risk of VTE is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a lower limb exercise device for elderly patients at high risk of VTE. It aims to improve the problem that in the prior art, the pedals of lower limb exercise devices are usually at a fixed angle. Some elderly people may have different ankle inclinations due to arthritis, joint stiffness or other conditions, which may make them feel uncomfortable when using the device. Prolonged use may aggravate joint pain or cause other problems, affecting the exercise effect and increasing the burden on the body.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a lower limb exercise device for elderly patients at high risk of VTE, comprising a base, a movable plate slidably connected to the front end of the inner surface of the base, a plate body slidably connected to the top end of the outer surface of the movable plate, a hinge seat fixedly connected to the rear end of the outer surface of the top end of the plate body, a pedal hinged to the inner surface of the hinge seat, a hinge rod A hinged to the middle of the outer surface of the front end of the pedal, a threaded component A hinged to the bottom of the outer surface of the hinge rod A, a threaded rod A rotatably connected to the top of the outer surface of the plate body, the inner surface of the hinge rod A and the outer surface of the threaded rod A penetrating and threadedly connected, and a spring-loaded component provided on the inner surface of the movable plate.
[0007] As a further description of the above technical solution:
[0008] The rebound assembly includes a guide post B, a slider, and a spring. The outer surface of the guide post B is fixedly connected to the inner surface of the moving plate. The top end of the outer surface of the slider is fixedly connected to the bottom end of the outer surface of the plate. The inner surface of the slider penetrates and is slidably connected to the outer surface of the guide post B. The outer surface of the slider is elastically connected to the front part of the inner surface of the moving plate through the spring.
[0009] As a further description of the above technical solution:
[0010] A threaded rod B is rotatably connected to the middle of the inner surface of the base. A threaded component B is threadedly connected to the rear end of the outer surface of the threaded rod B. A hinged rod B is hinged to the left side of the inner surface of the threaded component B. The left side of the outer surface of the hinged rod B is hinged to the right side of the outer surface of the movable plate.
[0011] As a further description of the above technical solution:
[0012] A guide post A is fixedly connected to the front end of the inner surface of the base, and the outer surface of the guide post A penetrates and is slidably connected to the inner surface of the movable plate.
[0013] As a further description of the above technical solution:
[0014] Both the front end of the outer surface of threaded rod A and the front end of the outer surface of threaded rod B are fixedly connected with knobs.
[0015] As a further description of the above technical solution:
[0016] One end of the spring is fixedly connected to the inner surface of the movable plate, and the other end of the spring is fixedly connected to the outer surface of the slider.
[0017] As a further description of the above technical solution:
[0018] A T-shaped block is fixedly connected to the bottom of the outer surface of the plate, and the outer surface of the T-shaped block is slidably connected to the top of the inner surface of the movable plate.
[0019] As a further description of the above technical solution:
[0020] A seat is fixedly connected to the rear part of the outer surface at the top of the base.
[0021] This utility model has the following beneficial effects:
[0022] 1. In this utility model, by rotating the threaded rod A, the angle of the pedal can be precisely adjusted, ensuring that different users, especially the elderly with joint diseases, can adjust the angle of the pedal according to their own needs when using it, thereby reducing joint pressure, increasing the comfort of exercise, and avoiding discomfort or joint pain caused by a fixed angle.
[0023] 2. In this utility model, by rotating the threaded rod B, the distance between the two sets of pedals can be easily adjusted to suit users of different body types. It can adjust the standing distance of the feet according to the needs of the elderly, avoiding discomfort or inconvenience caused by the distance being too narrow or too wide, making exercise more humane and flexible. Attached Figure Description
[0024] Fig. 1 This is a schematic diagram of the main structure of a lower limb exercise device for elderly patients at high risk of VTE proposed in this utility model;
[0025] Fig. 2 This is a schematic diagram of the threaded rod B structure of a lower limb exercise device for elderly patients at high risk of VTE proposed in this utility model;
[0026] Fig. 3 This is a schematic diagram of the pedal tilting structure of a lower limb exercise device for elderly patients at high risk of VTE proposed in this utility model.
[0027] Legend:
[0028] 1. Base; 2. Seat; 3. Pedal; 4. Moving plate; 5. Hinge rod A; 6. Hinge seat; 7. Threaded rod A; 8. Threaded component A; 9. Knob; 10. Spring; 11. Guide post A; 12. Threaded rod B; 13. Threaded component B; 14. Hinge rod B; 15. T-block; 16. Plate; 17. Guide post B; 18. Sliding component. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] Reference Figs. 1-3This utility model provides an embodiment of a lower limb exercise device for elderly patients at high risk of VTE, comprising a base 1, a movable plate 4 slidably connected to the front end of the inner surface of the base 1, allowing the movable plate 4 to move laterally along the front end of the inner surface of the base 1, a plate body 16 slidably connected to the top end of the outer surface of the movable plate 4, allowing the plate body 16 to move laterally along the top end of the outer surface of the movable plate 4, a hinge seat 6 fixedly connected to the rear end of the top end of the outer surface of the plate body 16, providing fixed support for the hinge seat 6, a pedal 3 hinged to the inner surface of the hinge seat 6, allowing the pedal 3 to rotate along the inner surface of the hinge seat 6, and a hinge rod A5 hinged to the middle of the outer surface of the front end of the pedal 3, allowing... When the hinge rod A5 moves, it can cause the pedal 3 to flip. The bottom of the outer surface of the hinge rod A5 is hinged with a threaded part A8, so that when the threaded part A8 moves laterally, it can cause the hinge rod A5 to move together. The top of the outer surface of the plate 16 is rotatably connected with a threaded rod A7, so that the threaded rod A7 can rotate along the top of the outer surface of the plate 16. The inner surface of the hinge rod A5 and the outer surface of the threaded rod A7 are connected and threaded, so that when the threaded rod A7 rotates, it can cause the threaded part A8 to move laterally because it is connected and threaded to the inner surface of the threaded part A8. The inner surface of the moving plate 4 is provided with a spring-loaded component, so that after the pedal 3 is pressed, the pedal 3 can rebound through the spring-loaded component.
[0031] Reference Figs. 1-3 The rebound assembly includes a guide post B17, a slider 18, and a spring 10. The outer surface of the guide post B17 is fixedly connected to the inner surface of the movable plate 4, providing fixed support for the guide post B17 through the inner surface of the movable plate 4. The top end of the outer surface of the slider 18 is fixedly connected to the bottom end of the outer surface of the plate 16, enabling the slider 18 to move together with the plate 16 when it moves laterally, and also enabling the slider 18 to move the plate 16 together when it moves laterally. The inner surface of the slider 18 penetrates and slides through the outer surface of the guide post B17. The connection allows the slider 18 to move laterally along the outer surface of the guide post B17 to a specified position. The outer surface of the slider 18 is elastically connected to the front part of the inner surface of the moving plate 4 through the spring 10, so that the slider 18 can always maintain the effect of moving backward without the influence of external force. One end of the spring 10 is fixedly connected to the inner surface of the moving plate 4, and the other end of the spring 10 is fixedly connected to the outer surface of the slider 18, so that when the pedal 3 is stopped, the slider 18 will drive the plate 16 and the pedal 3 to reset due to the elastic force of the spring 10.
[0032] Reference Figs. 1-3A threaded rod B12 is rotatably connected to the middle of the inner surface of the base 1, allowing the threaded rod B12 to rotate along the middle of the inner surface of the base 1. A threaded component B13 is threadedly connected to the rear end of the outer surface of the threaded rod B12, allowing the threaded rod B12 to drive the threaded component B13 to move laterally when it rotates. A hinge rod B14 is hinged to the left side of the inner surface of the threaded component B13, allowing the threaded component B13 to move laterally while simultaneously driving the hinge rod B14 to move. The left side of the outer surface of the hinge rod B14 is hinged to the right side of the outer surface of the movable plate 4, allowing the hinge rod B14 to move laterally while simultaneously driving the movable plate 4 to move.
[0033] Reference Figs. 1-3 A guide post A11 is fixedly connected to the front end of the inner surface of the base 1, providing fixed support for the guide post A11 through the inner surface of the base 1. The outer surface of the guide post A11 is slidably connected to the inner surface of the moving plate 4, so that the moving plate 4 can always move along the designated position when moving laterally. A knob 9 is fixedly connected to the front end of the outer surface of the threaded rod A7 and the front end of the outer surface of the threaded rod B12, so that slippage can be prevented when rotating the threaded rod A7. A T-shaped block 15 is fixedly connected to the bottom end of the outer surface of the plate 16, so that the plate 16 can drive the T-shaped block 15 to move together when moving laterally. The outer surface of the T-shaped block 15 is slidably connected to the top of the inner surface of the moving plate 4, so that the plate 16 can always move along the designated position when moving laterally along the top of the outer surface of the moving plate 4. A seat 2 is fixedly connected to the rear part of the outer surface of the top of the base 1, so that the patient can sit on the seat 2 and step on the pedal 3.
[0034] Working principle: When the angle of pedal 3 needs to be adjusted, the threaded rod A7 is rotated, which causes the threaded part A8 to move laterally. When the threaded part A8 moves laterally, it will simultaneously drive the hinge rod A5 to move. When the hinge rod A5 moves, it will cause the pedal 3 spring hinge seat 6 to flip, so as to achieve the effect of adjusting the angle of pedal 3.
[0035] When it is necessary to adjust the distance between the two sets of pedals 3, the threaded rod B12 is rotated to drive the threaded component B13 to move laterally. When the threaded component B13 moves laterally, it also drives the hinged rods B14 on both sides of the threaded component B13 to move together. This allows the two sets of hinged rods B14 to drive the two sets of moving plates 4 to move laterally outward or inward. When the two sets of moving plates 4 move, they drive the two sets of pedals 3 to move together, thereby achieving the effect of adjusting the distance between the two sets of pedals 3.
[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A lower limb exercise device for elderly patients at high risk of VTE, comprising a base (1), characterized in that: The inner surface of the base (1) is slidably connected to a movable plate (4), the outer surface of the movable plate (4) is slidably connected to a plate body (16), the outer surface of the top of the plate body (16) is fixedly connected to a hinge seat (6), the inner surface of the hinge seat (6) is hinged to a pedal (3), the outer surface of the front end of the pedal (3) is hinged to a hinge rod A (5), the bottom of the outer surface of the hinge rod A (5) is hinged to a threaded part A (8), the top of the outer surface of the plate body (16) is rotatably connected to a threaded rod A (7), the inner surface of the hinge rod A (5) and the outer surface of the threaded rod A (7) are connected through and threaded, and the inner surface of the movable plate (4) is provided with a spring-loaded assembly.
2. The lower limb exercise device for elderly patients at high risk of VTE according to claim 1, characterized in that: The rebound assembly includes a guide post B (17), a slider (18), and a spring (10). The outer surface of the guide post B (17) is fixedly connected to the inner surface of the moving plate (4). The top end of the outer surface of the slider (18) is fixedly connected to the bottom end of the outer surface of the plate (16). The inner surface of the slider (18) penetrates and slides through the outer surface of the guide post B (17). The outer surface of the slider (18) is elastically connected to the front part of the inner surface of the moving plate (4) through the spring (10).
3. The lower limb exercise device for elderly patients at high risk of VTE according to claim 1, characterized in that: A threaded rod B (12) is rotatably connected to the middle of the inner surface of the base (1). The outer rear end of the threaded rod B (12) is threaded and connected to a threaded component B (13). A hinged rod B (14) is hinged to the left side of the inner surface of the threaded component B (13). The left side of the outer surface of the hinged rod B (14) is hinged to the right side of the outer surface of the movable plate (4).
4. The lower limb exercise device for elderly patients at high risk of VTE according to claim 1, characterized in that: The inner surface of the base (1) is fixedly connected to the front end of the guide post A (11), and the outer surface of the guide post A (11) is connected to the inner surface of the moving plate (4) through and slidingly connected.
5. The lower limb exercise device for elderly patients at high risk of VTE according to claim 1, characterized in that: A knob (9) is fixedly connected to the front end of the outer surface of threaded rod A (7) and the front end of the outer surface of threaded rod B (12).
6. The lower limb exercise device for elderly patients at high risk of VTE according to claim 2, characterized in that: One end of the spring (10) is fixedly connected to the inner surface of the movable plate (4), and the other end of the spring (10) is fixedly connected to the outer surface of the slider (18).
7. The lower limb exercise device for elderly patients at high risk of VTE according to claim 1, characterized in that: A T-shaped block (15) is fixedly connected to the bottom of the outer surface of the plate (16), and the outer surface of the T-shaped block (15) is slidably connected to the top of the inner surface of the movable plate (4).
8. The lower limb exercise device for elderly patients at high risk of VTE according to claim 1, characterized in that: A seat (2) is fixedly connected to the rear part of the outer surface of the top of the base (1).