Modular limb rehabilitation training device

Abstract

The utility model provides a kind of modularization limb rehabilitation training device, be applicable to the patient who cannot stand or sit up in early bed to carry out four limbs rehabilitation training.The device includes flat base, vertically arranged liftable stand in the one end of base and fixed in the cantilever of stand upper portion.At least one training module is sleeved on the cantilever, and training module includes shell, pivot, crank and foot pedal or handle, and is fixed in the arbitrary position of cantilever by locking knob.The device can be connected by transmission rod two training modules respectively equipped with foot pedal and handle, and the linkage training of upper and lower limbs is realized by the aid of intermeshing bevel gear set.The utility model solves the technical problems of not suitable for early bed, low training efficiency and limbs unable to train in coordination in prior art.

Description

Technical Field

[0001] This utility model relates to the field of human necessities, and more particularly to the field of medical assistive devices, especially a modular limb rehabilitation training device. Background Technology

[0002] In clinical practice, there is a large group of patients who are extremely weak due to various diseases and require long-term bed rest. These patients include, but are not limited to, those with cardiovascular diseases such as myocardial infarction and heart failure, patients who have undergone orthopedic joint replacement surgery, patients dependent on ventilators in intensive care units, and patients paralyzed due to central nervous system diseases. Prolonged bed rest leads to prolonged lack of physical activity and muscle weakness. The harmful effects of lack of physical activity include reduced muscle protein synthesis, increased proteolysis, and loss of muscle strength and lean body mass. These problems prevent patients from fully recovering their normal functional abilities and increase the risk of readmission and death.

[0003] Early and timely scientific limb functional training in bedridden patients has extremely important clinical significance. Multiple clinical guidelines emphasize the importance of early physical activity in bedridden patients. Early rehabilitation based on movement can improve the cardiopulmonary health of bedridden patients and reduce long-term cardiac mortality and short-term hospitalization rates. First, the regular contraction of muscles acts like a "biological pump," which can greatly improve cardiopulmonary function and promote venous blood and lymphatic return from the limbs. This is the most crucial and cost-effective physical measure to prevent fatal complications such as cardiopulmonary failure, deep vein thrombosis, and pulmonary embolism. Second, active limb movement can effectively maintain joint mobility, prevent joint contractures and stiffness, and preserve basic motor function for later standing and walking. Furthermore, early active training helps slow down muscle atrophy, maintain a certain level of muscle strength and proprioception, and provides patients with a way to actively participate in their own rehabilitation, generating positive psychological motivation and enhancing their confidence in recovery.

[0004] Existing rehabilitation methods have the following shortcomings or defects: 1. Ordinary rehabilitation equipment is usually only suitable for patients who are standing or sitting, and not for patients in the early stages of bed rest.

[0005] 2. Traditional bedside rehabilitation methods mainly rely on therapists or family members to provide manual assistance, which is inefficient, consumes a lot of human resources, and makes it difficult to guarantee the consistency of training frequency, duration and effect, causing many patients to miss the best early intervention window.

[0006] 3. Patients need to train their hands and feet separately, which is inefficient. Their movements are isolated and lack coordination, which cannot effectively stimulate the neuromuscular system to work together, hindering functional reconstruction and making it easy to miss the golden period of early rehabilitation. Utility Model Content

[0007] The purpose of this utility model is to provide a modular limb rehabilitation training device, which aims to solve the technical problems of existing clinical techniques, such as inapplicability in the early stages of bed rest, low training efficiency, and inability to train limbs in a coordinated manner.

[0008] This utility model provides a modular limb rehabilitation training device, including a base, which is flat; a column is fixedly installed at one end of the base along its length, the column is vertically upward, and a cantilever is fixedly installed on the column, the cantilever being located above the base; it includes at least one training module; each training module includes a housing, the housing having a through groove along its length, the through groove being sleeved with the cantilever; a locking knob is installed on the housing, the locking end of the locking knob passing through the through groove and abutting against the cantilever; a rotating shaft is rotatably installed inside the housing, the rotating shaft passing through both sides of the housing along its width, a crank is installed at each end of the rotating shaft, the two cranks facing opposite directions, one end of the crank is fixedly connected to the rotating shaft, and the other end of the crank is installed with a foot pedal or handle.

[0009] Furthermore, the foot pedal is equipped with an anti-slip foot cover.

[0010] Furthermore, it includes a diagonal brace, one end of which is connected to the cantilever, and the other end of which is connected to the column.

[0011] Furthermore, the base is flat; the cantilever is located above the base; and the column is a liftable column.

[0012] Furthermore, the column includes an outer tube and an inner tube, with the outer tube fitted over the inner tube. Insertion holes are respectively formed along the axial direction on the side walls of both the outer tube and the inner tube, and the insertion holes of the outer tube and the inner tube are connected to each other by a pin. Furthermore, the column is provided with one or more C-clamps.

[0013] Furthermore, a pulley is provided at the end of the base away from the column.

[0014] Furthermore, a first bevel gear is coaxially sleeved on the rotating shaft, and a connecting shaft is rotatably arranged along the length direction inside the housing. One end of the connecting shaft passes through the housing and is disposed on the outside, while a second bevel gear is fixedly disposed on the other end of the connecting shaft. The first bevel gear and the second bevel gear are meshed and connected. A connecting groove is formed on the outer end face of the connecting shaft. The training module includes a first training module and a second training module. A foot pedal is disposed on the crank of the first training module, and a handle is disposed on the crank of the second training module. The first training module and the second training module are arranged facing each other. The module includes a transmission rod, and a first connector and a second connector are respectively disposed on the two end faces of the transmission rod. The first connector is inserted into the connecting groove of the first training module, and the second connector is matched and inserted into the connecting groove of the second training module.

[0015] Furthermore, the cross-sections of the connecting grooves are all regular polygons.

[0016] Furthermore, the training module is equipped with a damping adjustment device, which includes an adjustment knob mounted outside the housing. The adjustment knob's shaft is threadedly connected to the housing, and a damping head is provided at the end of the adjustment knob's shaft. The damping head abuts against one side of the axial direction of the first bevel gear.

[0017] Compared with existing technologies, the advantages of this invention are positive and obvious: 1. This utility model, through its base, column, and cantilever above the bed surface, constitutes a training system that can perfectly integrate into the hospital bed environment. Its flat base can easily embed into the bed, allowing for efficient training directly in a supine position. The height-adjustable column can precisely adjust the training interface to a comfortable range easily accessible to the patient's limbs while supine. This device does not require the patient to change their bedridden posture, solving the fundamental problem that traditional devices cannot be used for patients in the early stages of bed rest.

[0018] 2. This utility model standardizes the training process through mechanization and modular structure. It provides patients with stable and controllable movement trajectories for their limbs, significantly reducing the huge human resource consumption of traditional manual training, ensuring consistency in training frequency, duration, and intensity, and enabling each patient to receive timely, sufficient, and efficient early intervention.

[0019] 3. The four-limb linkage mechanism of this utility model breaks through the limitations of traditional separate training. It connects the first training module and the second training module through the transmission rod, and trains the upper and lower limbs at the same time, so that the patient's hand and foot movements are coordinated and synchronized, simulating the natural coordination mode of the human body. It can effectively improve cardiopulmonary fitness, stimulate the neuromuscular system to work in synergy, promote the reconstruction of motor function, and transform single limb activities into efficient whole-body rehabilitation training. Attached Figure Description

[0020] Figure 1 A schematic diagram of the structure of Embodiment 1 of this utility model.

[0021] Figure 2 A schematic diagram of the training module in Embodiment 1 of this utility model.

[0022] Figure 3 A schematic diagram of the structure of Embodiment 2 of this utility model.

[0023] Figure 4 A schematic diagram of the internal transmission structure of the training module in Embodiment 2 of this utility model.

[0024] Figure 5 A schematic diagram of the transmission rod in Embodiment 2 of this utility model.

[0025] Figure 6 A schematic diagram of the structure of Embodiment 3 of this utility model.

[0026] In the diagram: 1. Base; 11. Pulley; 2. Column; 21. C-clamp; 22. Socket; 23. Pin; 3. Cantilever; 31. Diagonal brace; 32. Limiting plug; 4. Training module; 41. Housing; 42. Shaft; 43. Crank; 44. Foot pedal; 45. Locking knob; 46. Through groove; 47. Connecting shaft; 48. Connecting groove; 49. Handle; 401. First training module; 402. Second training module; 6. Transmission rod; 61. First connector; 62. Second connector; 7. Anti-slip foot cover; 8. First bevel gear; 9. Second bevel gear; 10. Damping adjustment device. Detailed Implementation

[0027] The following embodiments will further illustrate the present invention, but are not intended to limit the present invention. Example 1

[0028] like Figures 1 to 2 As shown, this embodiment provides a modular limb rehabilitation training device, which includes a base 1. The base 1 is designed with a flat structure and a certain amount of counterweight, which is designed to lower the overall center of gravity and make it easy to push under the hospital bed, thereby saving valuable ward space.

[0029] A vertical column 2 is fixedly welded to one end of the base 1 along its length. A cantilever 3 is fixedly installed on the upper part of the column 2. The cantilever 3 is located directly above the base 1. After the base 1 is pushed into the bed, the cantilever 3 is suspended directly above the patient, thus forming an adjustable training module 4 mounting base above the patient.

[0030] The device includes a training module 4, which comprises a housing 41. A through slot 46 is machined along the length of the housing 41, and the dimensions of the through slot 46 match the cross-section of the cantilever 3, allowing the entire training module 4 to be fitted onto the cantilever 3. A locking knob 45 is also installed on the housing 41. When tightened, the locking end of the locking knob 45 passes through the inner wall of the through slot 46 and abuts against the inner surface of the cantilever 3, thereby reliably fixing the training module 4 to any position on the cantilever 3 through the generated friction.

[0031] Inside the housing 41, a rotating shaft 42 is rotatably mounted via two bearings. The shaft 42 is horizontally arranged along the width of the housing 41 and passes through the left and right side walls of the housing 41. A crank 43 is fixedly mounted at each end of the shaft 42, with the two cranks 43 facing opposite directions. One end of each crank 43 is fixedly connected to the shaft 42, and the other free end is fitted with a foot pedal 44 for foot training (or alternatively, a handle 49 for hand training).

[0032] A non-slip foot cover 7 is installed on one side of the foot pedal 44. The foot cover is usually made of rubber or high-friction fabric and can be put on the patient's foot to prevent slipping and loss of foot support during training, improve transmission efficiency, and enhance safety.

[0033] The device also includes a diagonal brace 31, one end of which is connected to the top surface of the cantilever 3, and the other end is connected to the upper side wall of the column 2. The three form a stable triangular support structure, which greatly enhances the bending strength of the cantilever 3 and prevents it from deforming due to load.

[0034] The support column 2 is designed as a height-adjustable structure, allowing medical staff to flexibly adjust the working height of the cantilever 3 and training module 4 according to the actual height of the bed and the patient's body shape. One specific implementation of the height-adjustable support column 2 includes an outer tube and an inner tube, with the outer tube fitted over the inner tube, allowing for axial relative sliding between them. Multiple insertion holes 22 are correspondingly provided along the axial direction on the side walls of both the outer and inner tubes. By aligning the insertion holes 22 at different heights and inserting a pin 23, the relative fixation of the outer and inner tubes can be achieved, thus completing both coarse height adjustment and locking.

[0035] On the support column 2, one or more C-clamps 21 are also provided. The C-clamps are conventional lockable C-clamps. The C-clamps 21 can be firmly clamped to the metal railing at the end of the hospital bed. When the device is placed on the ground via the base 1, the C-clamps 21 can be used to rigidly connect the support column 2 to the hospital bed frame, forming a double fixation. This significantly enhances the torsional and tilting stability of the entire training device during patient use, effectively preventing the device from shifting or shaking due to the force generated by the training movements, and improving the safety and reliability of use.

[0036] At the other end of the base 1 away from the column 2, two pulleys 11 are installed at the bottom. The pulleys 11 are equipped with a braking device, which makes the whole device easy to move and stable after positioning, making it easy to transfer between different hospital beds.

[0037] At the free end of the cantilever 3, a limiting plug 32 is detachably connected by a thread. This plug can effectively prevent the training module 4, which is sleeved on the cantilever 3, from accidentally slipping off the end, thus playing an important safety protection role. Example 2

[0038] like Figures 3 to 5 As shown, this embodiment is a preferred solution of embodiment 1. Based on the basic structure of embodiment 1, this embodiment includes two training modules 4, namely the first training module 401 and the second training module 402. This embodiment realizes the linkage function between the two training modules 4.

[0039] In the first training module 401, a foot pedal 44 for lower limb training is mounted on the crank 43. In the second training module 402, a handle 49 for upper limb training is mounted on the crank 43. During installation, the first training module 401 and the second training module 402 are arranged facing each other on the cantilever 3.

[0040] In any training module 4, a first bevel gear 8 is coaxially mounted on a rotating shaft 42 within its housing 41. Simultaneously, a connecting shaft 47 is rotatably mounted within the housing 41 along its length, parallel to the cantilever 3, via bearings. One end of the connecting shaft 47 passes through the side wall of the housing 41 and is exposed to the outside, while a second bevel gear 9 is fixedly mounted on its other end. The first bevel gear 8 and the second bevel gear 9 mesh with each other within the housing 41, thereby converting the rotational motion of the rotating shaft 42 into the rotational motion of the connecting shaft 47. A connecting groove 48 with a regular hexagonal cross-section is machined on the outer end face of the connecting shaft 47.

[0041] The device also includes an independent transmission rod 6, with a first connector 61 and a second connector 62 machined on its two end faces, respectively. The first connector 61 is matched and plugged into the connecting groove 48 of the first training module 401; similarly, the second connector 62 is matched and plugged into the connecting groove 48 of the second training module 402.

[0042] In other embodiments, the cross-section of the connecting groove 48 can also be other regular polygons, such as a regular quadrilateral or a regular pentagon, and the matching transmission rod 6 connector also adopts the same regular polygonal cross-section. This shape connection ensures that there is no relative slippage between the transmission rod 6 and the connecting groove 48, enabling efficient and lossless torque transmission and guaranteeing the synchronization and effectiveness of the linkage.

[0043] After the connecting shafts 47 of the two training modules 4 are connected by the transmission rod 6, when the patient actively pedals the foot pedal 44 of the first training module 401, the power is transmitted to the connecting shaft 47 through the rotating shaft 42, the first bevel gear 8, and the second bevel gear 9. The transmission rod 6 then drives the connecting shaft 47 of the second training module 402 to rotate, thereby moving its handle 49 and achieving coordinated training of the lower limb driving the upper limb. Conversely, rotating the handle 49 can also drive the foot pedal 44 to move.

[0044] When a patient's lower limb function is better than their upper limb function, such as in some patients after acute myocardial infarction or those with upper limb hemiplegia, their lower limbs still retain some active motor ability. The patient can actively pedal the first training module 401 equipped with foot pedals 44, and the resulting power can be precisely transmitted through the transmission system to the second training module 402 equipped with handles 49, thereby driving the patient's upper limbs to perform a standardized, passive rowing motion.

[0045] When patients have relatively well-preserved upper limb function but weak lower limb strength, such as those with heart failure or peripheral nerve injury, the power generated by actively rotating the handle 49 can drive the lower limbs to complete a pedaling motion. This allows patients to perform active upper limb training while simultaneously engaging in continuous passive joint range of motion training in the lower limbs, effectively promoting blood circulation in the lower limbs, preventing deep vein thrombosis, and preparing for the active recovery of lower limb function.

[0046] This two-way linkage design utilizes the patient's residual muscle strength, enabling the stronger limb to assist and support the weaker limb, allowing patients to begin effective bilateral limb coordination training in the early stages of bed rest. It not only maximizes the energy utilization of each training session, significantly improving training efficiency, but also mimics the coordinated working mode of the human neuromuscular system, making it highly valuable for rebuilding complete motor control. Example 3

[0047] like Figure 6As shown, this embodiment is a preferred embodiment of embodiment 2. Each training module 4 is equipped with a damping adjustment device 10. Each damping adjustment device 10 includes an adjustment knob rotatably mounted outside the housing 41. The rotating shaft of the adjustment knob is threadedly connected to the housing. A damping head is fixedly mounted at the end of the rotating shaft of the adjustment knob. The damping head abuts against the side of the first bevel gear 8 on one axial side. When the adjustment knob is tightened, the damping head approaches the first bevel gear 8, thereby making the damping head abut against the first bevel gear 8 more tightly, thus increasing the rotational resistance of the rotating shaft 42. Conversely, loosening the adjustment knob can reduce the resistance. This structure can be used to adjust the training difficulty.

[0048] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A modular limb rehabilitation training device, characterized in that: Includes a base (1), one end of which is fixedly provided with a column (2) in the length direction, and a cantilever (3) is fixedly provided on the column (2); It includes at least one training module (4); each of the training modules (4) includes a housing (41), the housing (41) is provided with a through groove (46) along the length direction, the through groove (46) is sleeved with the cantilever (3); a locking knob (45) is installed on the housing (41), the locking end of the locking knob (45) passes through the through groove (46) and abuts against the cantilever (3); A rotating shaft (42) is rotatably disposed inside the housing (41). The rotating shaft (42) passes through both sides of the housing (41) along the width direction. A crank (43) is installed at each end of the rotating shaft (42). The two cranks (43) face opposite directions. One end of the crank (43) is fixedly connected to the rotating shaft (42). A foot pedal (44) or handle (49) is installed at the other end of the crank (43).

2. The modular limb rehabilitation training device according to claim 1, characterized in that: The foot pedal (44) is equipped with an anti-slip foot cover (7).

3. The modular limb rehabilitation training device according to claim 1, characterized in that: It includes a diagonal brace (31), one end of which is connected to the cantilever (3), and the other end of which is connected to the column (2).

4. The modular limb rehabilitation training device according to claim 1, characterized in that: The base (1) is flat; the cantilever (3) is located above the base (1); the column (2) is a liftable column (2).

5. A modular limb rehabilitation training device according to claim 4, characterized in that: The column (2) includes an outer tube and an inner tube. The outer tube is sleeved outside the inner tube. The side walls of the outer tube and the inner tube are respectively provided with insertion holes (22) along the axial direction. The insertion holes (22) of the outer tube and the insertion holes (22) of the inner tube are connected to each other by a pin (23).

6. The modular limb rehabilitation training device according to claim 1, characterized in that: One or more C-shaped clips (21) are provided on the column (2).

7. The modular limb rehabilitation training device according to claim 1, characterized in that: A pulley (11) is provided at the end of the base (1) away from the column (2).

8. The modular limb rehabilitation training device according to claim 1, characterized in that: A first bevel gear (8) is coaxially sleeved on the rotating shaft (42). A connecting shaft (47) is rotatably arranged inside the housing (41) along the length direction. One end of the connecting shaft (47) passes through the housing (41) and is located on the outside. A second bevel gear (9) is fixedly arranged on the other end of the connecting shaft (47). The first bevel gear (8) and the second bevel gear (9) are meshed and connected. A connecting groove (48) is opened on the end face of the connecting shaft (47) located on the outside. The training module (4) includes a first training module (401) and a second training module (402). The first training module (401) has a foot pedal (44) on its crank (43), and the second training module (402) has a handle (49) on its crank (43). The first training module (401) and the second training module (402) are arranged facing each other. The transmission rod (6) includes a first connector (61) and a second connector (62) on its two ends. The first connector (61) is inserted into the connection slot (48) of the first training module (401), and the second connector (62) is matched and inserted into the connection slot (48) of the second training module (402).

9. A modular limb rehabilitation training device according to claim 8, characterized in that: The cross-sections of the connecting grooves (48) are all regular polygons.

10. A modular limb rehabilitation training device according to claim 8, characterized in that: The training module (4) is equipped with a damping adjustment device (10). The damping adjustment device (10) includes an adjustment knob installed outside the housing (41). The rotating shaft of the adjustment knob is threadedly connected to the housing (41). A damping head is provided at the end of the rotating shaft of the adjustment knob. The damping head abuts against one side of the axial direction of the first bevel gear (8).

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