An upper limb rehabilitation training device

Abstract

The present application relates to the field of physical training, and specifically provides an upper limb rehabilitation training device, which includes an elastic rod, a spiral elastic device is sleeved on the outer periphery of the elastic rod, the inner diameter of the elastic device is larger than the outer diameter of the elastic rod, and a first receiving portion and a second receiving portion are fixedly provided at both ends of the elastic rod, the first receiving portion and the second receiving portion are arranged opposite to each other, and the first receiving portion and the second receiving portion can be covered together to form a chamber, and the chamber can accommodate the elastic device and the elastic rod in a compressed state. In the present application, the first receiving portion and the second receiving portion are provided so that the spring and the elastic rod can be compressed into the chamber formed between the first receiving portion and the second receiving portion, thereby reducing the size of the device as a whole and improving the portability of the device. In this way, the user can use fragmented time to train anytime and anywhere, which is very important for the recovery of upper limb injury patients who require long-term training. Therefore, the training effect of the device of the present application is better.

Description

Technical Field

[0001] The present application relates to the field of physical training, and in particular, to an upper limb rehabilitation training device. Background Art

[0002] The upper limbs are crucial organs of movement in the human body, boasting a highly complex structure. They consist of the upper arm, forearm, and hand, connected by the wrist, elbow, and shoulder joints, and driven by muscles and ligaments. The upper limbs are responsible for the majority of daily movements, such as pressing, rotating, and positioning. Therefore, stretching exercises for the upper limbs are crucial, especially for patients with impaired upper limb function, such as those with stroke, cerebral palsy, and traumatic upper limb dysfunction. For example, stroke is an acute cerebrovascular disease that, due to various etiologies, disrupts blood flow to the brain, ultimately causing brain damage. The most common sequelae is hemiplegia, often manifested by unilateral limb movement limitation and sensory impairment. Recovery often requires long-term, targeted training, and recovery of the upper limbs is more challenging than that of the lower limbs. Therefore, for patients with impaired upper limb function, prolonged upper limb training is essential.

[0003] Traditional upper limb motor function rehabilitation training typically requires therapists to provide one-on-one training with patients. The intensity and frequency of treatment often fail to meet patients' functional recovery needs. Most patients undergo training in rehabilitation rooms, and existing training devices are unsuitable for patients returning home. An invention patent application, entitled "Upper Limb Rehabilitation Device," with publication number "CN 110314064A," discloses a training device comprising a display device, a control device, a seat, and two sets of upper limb rehabilitation robots. A utility model patent, entitled "Upper Limb Rehabilitation Device and Upper Limb Rehabilitation System," with authorization publication number "CN 207270644 U," discloses a training device comprising a base, a first support frame, a second support frame, a fixed frame, and a traction assembly. Existing training devices are large, difficult to port, and inconvenient to operate, making them impractical for home training. A utility model patent, entitled "Interchangeable Handle Arm Trainer," discloses an arm trainer that can be used for home training, but its high resistance makes it unsuitable for rehabilitation patients. Furthermore, its portability needs improvement, making it inconvenient to carry and store. Portability is very important for patient rehabilitation training. Patients can use their fragmented free time to carry out rehabilitation training anytime and anywhere.

[0004] In summary, existing training devices have poor portability and cannot meet the needs of patients with impaired upper limb function to train at any time, thereby affecting the training time and resulting in poor upper limb training effects. Summary of the Invention

[0005] The purpose of the present invention is to provide an upper limb rehabilitation training device to address the deficiencies in the above-mentioned prior art, so as to solve the problem that the training devices in the prior art are poor in portability and cannot meet the needs of patients with impaired upper limb function to train at any time, thereby affecting the training time and resulting in poor upper limb training effect.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] An upper limb rehabilitation training device includes an elastic rod, an outer circumference of which is provided with a spiral elastic device, the inner diameter of the elastic device is larger than the outer diameter of the elastic rod, and a first receiving portion and a second receiving portion are fixedly provided at both ends of the elastic rod. The first receiving portion and the second receiving portion are arranged opposite to each other, and the first receiving portion and the second receiving portion can be covered together to form a chamber, which can accommodate the elastic device and the elastic rod in a compressed state.

[0008] Furthermore, the elastic rod includes a first elastic rod component and a second elastic rod component, the length of the first elastic rod component is greater than the length of the second elastic rod component, and the elastic device is a spring.

[0009] Furthermore, the spring includes a first spring component and a second spring component, the length of the first spring component is greater than the length of the second spring component, and the inner diameter of the second elastic rod component is greater than the outer diameter of the first elastic rod component.

[0010] Furthermore, the first elastic rod component is a solid structure, the second elastic rod component is a hollow structure, the inner diameter of the second elastic rod component is larger than the outer diameter of the first elastic rod component, and the first elastic rod is a nested telescopic rod.

[0011] Furthermore, the spiral radius of the middle portion of the first spring member is large, and the spiral radius of the two side portions of the first spring member is small.

[0012] Furthermore, the length of the second elastic rod component is two-thirds to four-fifths of the length of the chamber formed when the first receiving portion and the second receiving portion are covered along the central axis of the device.

[0013] Furthermore, the first storage portion and the second storage portion are shaped like a column with an open side, consisting of a bottom surface and a side wall. The side walls of the first storage portion and the second storage portion are provided with matching threads at the edges near the open end, and the first storage portion and the second storage portion are connected by threads.

[0014] Furthermore, the handle is fixedly connected to the first receiving portion and the second receiving portion via a connecting rod, and central axes of the elastic rod, the elastic device, the handle, the first receiving portion, the second receiving portion, and the connecting rod coincide with each other.

[0015] Furthermore, the elastic rod is made of one of metal, alloy, rubber and plastic, and the handle, the first receiving portion and the second receiving portion are made of hard materials.

[0016] Furthermore, the material of the spring is one of carbon spring steel, alloy spring steel, stainless spring steel, copper alloy, nickel alloy and rubber.

[0017] Compared with the prior art, the present invention has the following beneficial effects: the first and second receiving portions are provided in the present application, so that the spring and the elastic rod can be compressed into the chamber formed between the first and second receiving portions, thereby reducing the size of the device as a whole and improving the portability of the device. In this way, the user can use fragmented time to train anytime and anywhere, which is very important for the recovery of upper limb injury patients who require long-term training. Therefore, the training effect of the device of the present application is better. At the same time, the present application also designs the material and structure of the spring so that the spring and the elastic rod can have an exercise effect when stretched, and can be easily retracted when needed, thereby facilitating portability and improving portability.

[0018] This application mainly realizes effective training of the superficial muscles of the back, superior pectoral muscles, shoulder muscles, arm muscles, anterior forearm muscles, posterior forearm muscles, and hand muscles through shoulder horizontal abduction and adduction, shoulder lifting (flexion and extension / abduction and adduction), elbow flexion and extension, wrist flexion and extension, and hand grasping exercises; each muscle group cooperates with each other to achieve better training results. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of an upper limb rehabilitation training device provided in Example 1 of the present invention;

[0020] Figure 2 A schematic diagram of an upper limb rehabilitation training device in a bent state provided by Example 1 of the present invention;

[0021] Figure 3 This is a schematic diagram of an upper limb rehabilitation training device provided by Example 1 of the present invention when it is closed;

[0022] Figure 4 This is a schematic diagram of an upper limb rehabilitation training device provided in Example 1 of the present invention after being covered;

[0023] Figure 5 This is a schematic diagram of an elastic component in an upper limb rehabilitation training device provided in Example 2 of the present invention;

[0024] Figure 6 This is a schematic diagram of a first spring member in an upper limb rehabilitation training device provided in Example 3 of the present invention;

[0025] Figure 7This is a schematic diagram of another first spring component in an upper limb rehabilitation training device provided in Example 3 of the present invention.

[0026] Icon: 1-handle; 2-first storage portion; 3-second storage portion; 4-elastic rod; 41-first elastic rod component; 42-second elastic rod component; 5-spring; 51-first spring component; 52-second spring component; 6-engaging component. DETAILED DESCRIPTION

[0027] In order to make the implementation process of the present invention clearer, it will be described in detail below with reference to the accompanying drawings.

[0028] Example 1:

[0029] The present invention provides an upper limb rehabilitation training device, such as Figure 1 As shown, the device includes two handles 1, a first receiving portion 2, a second receiving portion 3, an elastic rod 4, and a spring 5. The spring 5 is sleeved on the outside of the elastic rod 4. The spiral radius of the spring 5 is larger than the outer diameter of the elastic rod 4, and the spring 5 and the elastic rod 4 do not contact each other. The first receiving portion 2 and the second receiving portion 3 are fixedly provided at both ends of the elastic rod 4 relative to each other. The openings of the first receiving portion 2 and the second receiving portion 3 are both oriented toward the spring 5. The first receiving portion 2 and the second receiving portion 3 can be closed together by threads or slots at the edges of the openings to form a chamber. Optionally, the two ends of the spring 5 are fixedly connected to the inner walls of the first receiving portion 2 and the second receiving portion 3. When closed, the elastic rod 4 and the spring 5 are compressed inside the chamber; when closed, the first receiving portion 2 and the second receiving portion 3 do not contact each other. A handle 1 is provided on the bottom surface of the first storage portion 2 and the second storage portion 3 on the side away from the spring 5. The handle 1 can be directly fixedly connected to the first storage portion 2 and the second storage portion 3, or fixedly connected by a connecting rod, that is, the connecting rod is respectively fixed to the first storage portion 2 and the second storage portion 3, and the two handles 1 are respectively fixed to the end of the connecting rod away from the first storage portion 2 or the second storage portion 3; the former is conducive to reducing the volume and easy storage, and the latter is conducive to the user applying force.

[0030] The spring 5 can be a compression spring or other springs. The material of the spring 5 can be carbon spring steel, alloy spring steel, stainless spring steel, copper alloy, nickel alloy, rubber, etc. The resistance during training is roughly 0.5-20kg of gravity. The resistance is neither too small nor too large, which can achieve the training effect without causing the user to be injured again. At the same time, the spring 5 and the elastic rod 4 can be easily compressed between the first storage part 2 and the second storage part 3 so that they can be covered together. The material of the elastic rod 4 is metal, alloy, rubber, or plastic, and the structure can be hollow or solid. Preferably, the central axes of the handle 1, the connecting rod, the first storage part 2, the second storage part 3, the elastic rod 4, and the spring 5 all coincide, so that when in use, no torque is generated vertically in the axis inside the device, and the device will not be damaged.

[0031] When in use, the user holds the handles 1 at both ends with his two hands and can stretch, shrink, bend and rotate them. Figure 2 The diagram shown is a schematic diagram of the bent state, so that different muscle groups of the upper limbs can be fully exercised. When in use, you can also directly grasp the first storage part 2 and the second storage part 3 to rotate, so that the distance between the two arms is reduced, it is easier to apply the torsional force, and the difficulty of completing the action is reduced. When it is necessary to cover, the user holds the first storage part 2 and the second storage part 3 or the two handles 1 respectively, compresses the spring 5 and the elastic rod 4, and the distance between the first storage part 2 and the second storage part 3 gradually decreases. After the two are in contact, the threads or grooves on the opposite edges of the first storage part 2 and the second storage part 3 match together, thereby compressing the elastic rod 4 and the spring 5 inside the cavity formed by the first storage part 2 and the second storage part 3. The schematic diagrams during and after covering are shown as follows. Figure 3 and Figure 4 As shown; preferably, the cover is closed in a threaded manner, so that torsional training can be performed during storage. The device of the present application is highly portable and storable, and the user can carry the device of the present application with him at any time and train in his spare time, thereby improving the training effect.

[0032] Example 2:

[0033] On the basis of Example 1, Figure 5As shown, the spring 5 and the elastic rod 4 are multi-sectioned. The spring 5 includes a first spring member 51 and a second spring member 52, and the elastic rod 4 includes a first elastic rod component 41 and a second elastic rod component 42. Specifically, the first elastic rod component 41 and the second elastic rod component 42 are fixedly connected. The length of the second elastic rod component 42 is two-thirds to four-fifths of the length of the chamber formed when the first and second receiving portions 2 and 3 are covered along the central axis of the device, which helps to accommodate the second elastic rod component 42. Generally speaking, the length of the first elastic rod component 41 is greater than the length of the second elastic rod component 42. The second elastic rod component 42 is a hollow structure. The first elastic rod component 41 can be a hollow component or a solid component. The inner diameter of the second elastic rod component 42 is greater than the outer diameter of the first elastic rod component 41, so that the first elastic rod component 41 can be retracted inside the second elastic rod component 42. The first elastic rod 41 and the second elastic rod 42 are fixedly connected by the engaging member 6. When not in storage, the first elastic rod 41 and the engaging member 6 are fixedly connected and do not move relative to each other. When storage is required, under the action of pressure, the engaging member 6 and the first elastic rod 41 move relative to each other, and the first elastic rod 41 passes through the engaging member and moves toward the second elastic rod 42, thereby partially or completely retracting inside the second elastic rod 42. The first elastic rod 41 forms a nested telescopic rod. In this way, compared to Example 1, the resistance to be overcome during storage is reduced, making storage easier and increasing portability. This allows users to train at any time and in any place, ultimately improving training results.

[0034] The first spring member 51 is sleeved onto the first elastic rod 41, with their axes coinciding. Its natural length is substantially the same as that of the first elastic rod 41. Its two ends are fixedly connected to the inner wall of the first receiving portion 2 (or second receiving portion 3) and the side of the engaging member 6 proximate to the first receiving portion 2 (or second receiving portion 3). The second spring member 52 is sleeved onto the second elastic rod 42, with their axes coinciding. Its natural length is substantially the same as that of the second elastic rod 42. Its two ends are fixedly connected to the inner wall of the second receiving portion 3 (or first receiving portion 2) and the side of the engaging member 6 proximate to the second receiving portion 3 (or first receiving portion 2). The first and second spring members 51 and 52 can be made of the same or different materials, have the same spiral radius, and have different spiral pitch. Preferably, the second spring member 52 has a smaller elastic modulus than the first spring member 51. This allows the second spring member 52 to begin compressing under relatively low pressure, facilitating the compression process and facilitating storage.

[0035] Because the elastic rod 4 is less susceptible to compression than the spring 5, in this embodiment, the elastic rod 4 is configured as a first elastic rod component 41 and a second elastic rod component 42. When compressed, the first elastic rod component 41 can be retracted inside the second elastic rod component 42. This reduces resistance when the first and second receiving portions 2 and 3 approach each other during storage, making storage easier. Furthermore, the first spring component 51 has a smaller elastic coefficient and is more easily retracted, making storage even easier.

[0036] Preferably, the first elastic rod component 41 can be configured as a multi-section elastic tube with interlocking connections, the outer diameter of which gradually decreases from the end closest to the second elastic rod component 42 to the end away from the second elastic rod component 42. In this way, when compressed into the second elastic rod component 42, it is at different radii, and the cross-section after compression is concentric, making it easier to compress and store. Preferably, a third elastic rod component can be symmetrically arranged at the end of the first elastic rod component 41 away from the second elastic rod component 42. The third elastic rod component has the same structure as the second elastic rod component 42 and can be the same or different in length. The sum of the lengths of the third elastic rod component and the second elastic rod component 42 is two-thirds to four-fifths of the length of the chamber formed when the first storage portion 2 and the second storage portion 3 are covered along the central axis of the device. A third spring member symmetrical to the second spring member 52 is sheathed around the third elastic rod component, and the naturally extended length of the third spring member is equal to the length of the third elastic rod component. In this way, the first elastic rod component 41 can be compressed into the second elastic rod component 42 and the third elastic rod component, that is, the first elastic rod component 41 can be retracted from both ends, thereby being easier to store and improving portability.

[0037] Example 3:

[0038] On the basis of Example 1 or Example 2, the spiral radius of the spring 5 or the first spring member 51 is not equal, and the first spring member 51 in this embodiment refers to the spring 5 or the first spring member 51. Specifically, Figure 6 As shown, the spiral radius in the middle of the first spring member 51 is larger, while the spiral radius on both sides is smaller. The spiral radius gradually decreases from the middle to the sides, forming a shuttle shape. The maximum spiral radius needs to be greater than five times the minimum spiral radius to ensure a sufficient radius difference. The different spiral radius sizes result in different elastic coefficients at different locations of the first spring member 51. Where the spiral radius is larger, the elastic coefficient is larger, and the spring is less likely to be stretched or compressed. Where the spiral radius is smaller, the elastic coefficient is smaller, and the spring is more likely to be stretched or compressed. The radius and elastic coefficient are smallest at the two ends of the spiral, and the user can apply less force to cause the springs at both ends to begin to deform. In other words, the user can easily start training with less force, reducing the difficulty of starting training.

[0039] When the user stretches, the deformation of the first spring member 51 increases. The portion with a smaller spiral radius has a smaller elastic coefficient and a larger deformation, while the portion with a larger spiral radius has a larger elastic coefficient and a smaller deformation. When the tension applied by the user increases, the portion with a smaller spiral radius has a greater elastic coefficient and a smaller deformation. This allows the user to fully stretch while increasing the stretching force, and the greater the force, the more complete the stretch. Generally, the stretching length of a spring changes linearly with the tension, resulting in the same deformation under both small and large tensions. When the user's tension is small, it is relatively easy to continue to increase the tension, while it is relatively difficult to continue to increase the tension when the user's tension is large. However, the deformation of the spring is the same in both cases. As a result, the deformation change caused by continuing to increase the tension when the user's tension is large cannot meet the requirement for full stretch. In this embodiment, the elastic coefficient of the first spring member 51 is uneven. When the user's tension is large, the portion with a smaller elastic coefficient and a smaller spiral radius will deform more. In this way, the first spring member 51 can still extend a considerable length, making the user's stretching process more complete.

[0040] When the user compresses, the deformation of the part with a larger spiral radius is smaller, and the deformation of the part with a smaller spiral radius is larger, that is, the part with a smaller spiral radius is more easily compressed, so that during the compression process, the part with a smaller spiral radius is easy to approach the part with a larger spiral radius. Due to the different spiral radii, the part with a smaller spiral radius will get close to or even enter the part with a larger spiral radius, which improves space utilization and makes the first spring member 51 easier to compress, thereby achieving the purpose of storage. In addition, when the part with a smaller spiral radius enters the part with a larger spiral radius, it will generate an elastic force pointing to the middle position of the part with a larger spiral radius, making the part with a larger spiral radius easier to contract. When the first spring member 51 is stretched, it can meet the user's need for full stretching, especially when the stretching force is large. When it is contracted, it can meet the need for easy compression, thereby facilitating storage.

[0041] Furthermore, the first spring member 51 may be composed of a plurality of Figure 6The shuttle-shaped structures shown are arranged periodically. On the one hand, increasing the number of shuttle-shaped structures makes it easier to train during stretching and easier to shrink during compression. On the other hand, after the periodic structure is formed, areas with larger spiral radii are provided on both sides of the area with smaller internal spiral radius, forming a structure in which the spiral radius changes from large to small and then from small to large. Since the area with smaller radius is easier to deform, the area with smaller spiral radius can enter the interior of the area with larger spiral radius on both sides during compression, so that the space utilization rate is further improved and it is easy to store. At the same time, due to the larger elastic coefficient, the larger spiral radius areas on both sides that are relatively difficult to deform will generate elastic forces from both sides to the middle of the part with smaller spiral radius in the middle, so that the part with smaller spiral radius produces a larger deformation amount, so that the first spring member 51 as a whole is easier to be compressed for easy storage.

[0042] Furthermore, in the first spring member 51 formed by the periodic arrangement of the shuttle-shaped structure, the structure of each period is not completely the same. Figure 7 As shown, the structure of each periodic unit is still a shuttle-shaped structure, but the spiral radius varies. The envelope formed by the edge of the maximum spiral radius in each periodic unit is still shuttle-shaped. The maximum spiral radius in the periodic unit also shows a trend of first increasing and then decreasing, and the maximum spiral radius with the largest radius is greater than three times the maximum spiral radius with the smallest radius. This makes the elastic coefficient distribution in the first spring member 51 more uneven. The elastic coefficient at the maximum spiral radius of the shuttle-shaped periodic structures on both sides gradually decreases from the center to the sides. During compression, the shuttle-shaped periodic structures on both sides are more easily compressed and move closer to the center. However, the maximum spiral radius of each period is not the same, showing a trend of first increasing and then decreasing from left to right. During compression, the shuttle-shaped periodic structure close to the edge gradually approaches the shuttle-shaped periodic structure in the middle, and the whole is easily compressed. The parts with smaller spiral radius on both sides of each shuttle-shaped periodic structure will approach or even enter the parts with larger spiral radius. The transmission process of elastic potential energy in the first spring member 51 between the various parts is more complicated. The part with the largest degree of compression deformation will change as the compression process progresses, so that the resistance during compression shows periodic changes in size rather than a constant force. That is, the user will feel sometimes relaxed and sometimes slightly strenuous during compression. Such pulsed pressure application can improve compression efficiency, making it easier to be stored.

[0043] Furthermore, the pitch of the spirals varies. Specifically, the pitch of the spirals in the portion with the larger spiral radius is larger (0.5-1.0 cm), while the pitch of the spirals in the portion with the smaller spiral radius is smaller (0.1-0.5 cm). The larger pitch of the spirals in the portion with the larger spiral radius does not, on the one hand, further increase the elastic modulus of the portion with the larger spiral radius, making deformation more difficult; on the other hand, it increases the internal space of the portion with the larger spiral radius, allowing it to accommodate more of the portion with the smaller spiral radius, thereby making the first spring member 51 more easily compressed. The smaller pitch of the spirals in the portion with the smaller spiral radius results in a greater deformation during stretching, allowing the user to achieve a more complete stretch, greater muscle stretching and contraction, and better training results.

[0044] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An upper limb rehabilitation training device, comprising an elastic rod, wherein a spiral elastic device is sleeved on the outer periphery of the elastic rod, wherein the inner diameter of the elastic device is larger than the outer diameter of the elastic rod, wherein: The two ends of the elastic rod are fixedly provided with a first receiving portion and a second receiving portion, the first receiving portion and the second receiving portion are arranged opposite to each other, and the first receiving portion and the second receiving portion can be covered together to form a chamber, and the chamber can accommodate the elastic device and the elastic rod in a compressed state; the elastic device is a spring, and the spring includes a first spring member and a second spring member, the length of the first spring member is greater than the length of the second spring member, and the elastic rod includes a first elastic rod component and a second elastic rod component, and the inner diameter of the second elastic rod component is greater than the outer diameter of the first elastic rod component; the middle part of the first spring member has a large spiral radius, and the spiral radius of the two side parts of the first spring member is small.

2. The upper limb rehabilitation training device according to claim 1, characterized in that: The length of the first elastic rod component is greater than the length of the second elastic rod component.

3. The upper limb rehabilitation training device according to claim 2, characterized in that: The first elastic rod component is a solid structure, the second elastic rod component is a hollow structure, the inner diameter of the second elastic rod component is larger than the outer diameter of the first elastic rod component, and the first elastic rod is a nested telescopic rod.

4. The upper limb rehabilitation training device according to claim 3, characterized in that: The length of the second elastic rod member is two-thirds to four-fifths of the length of the chamber formed when the first receiving portion and the second receiving portion are covered along the central axis of the device.

5. The upper limb rehabilitation training device according to claim 4, characterized in that: The first storage portion and the second storage portion are shaped like a column with one side open, and consist of a bottom surface and a side wall. The side walls of the first storage portion and the second storage portion are provided with matching threads at the edges near the open end, and the first storage portion and the second storage portion are connected by threads.

6. The upper limb rehabilitation training device according to claim 5, characterized in that: The handle is fixedly connected to the first receiving portion and the second receiving portion via a connecting rod, and central axes of the elastic rod, the elastic device, the handle, the first receiving portion, the second receiving portion, and the connecting rod coincide with each other.

7. The upper limb rehabilitation training device according to claim 6, characterized in that: The elastic rod is made of one of alloy, rubber and plastic, and the handle, the first receiving portion and the second receiving portion are made of hard materials.

8. The upper limb rehabilitation training device according to claim 7, characterized in that: The material of the spring is one of copper alloy, nickel alloy and rubber.

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