Single-finger flexion and extension rehabilitation training device

Abstract

The utility model discloses a single-finger flexion and extension rehabilitation training device which comprises a far-joint fingerstall, a middle-joint fingerstall and a near-joint fingerstall, the far-joint fingerstall, the middle-joint fingerstall and the near-joint fingerstall are connected in a pivoted mode in pairs, and the far-joint fingerstall and the middle-joint fingerstall are jointly in mechanical linkage with a linear motion structure restrained by elasticity. The flexion and extension force of the distal finger stall and the middle finger stall under the driving of the finger is resisted through the elastic reset force, so that the flexion and extension training of the finger is realized. The finger rehabilitation device has the advantages that the finger rehabilitation device is particularly suitable for hand function rehabilitation treatment after cerebral apoplexy or trauma on the basis of the human body finger structure and the movement bionics principle, finger muscle strength of a patient can be recovered, the flexibility of finger joints is improved, the movement range of the finger joints is widened, and joint stiffness and muscle atrophy caused by cerebral apoplexy or trauma are relieved.

Description

Technical Field

[0001] The utility model relates to the field of rehabilitation equipment, in particular to a single finger flexion and extension rehabilitation training device. Background Art

[0002] Hand dysfunction is one of the common rehabilitation problems of modern humans, which seriously affects people's daily life and mental health. Stroke, sports injury, spinal cord injury and other conditions can cause hand dysfunction. Among them, there are many stroke patients, which is a common and frequently-occurring disease of the nervous system. Most patients with hand dysfunction are caused by stroke; rehabilitation treatment of stroke includes four treatment methods: traditional rehabilitation treatment methods (physical therapy, occupational therapy and speech therapy, etc.), physical factor therapy, active training of the affected limb assisted by external equipment, drugs and minimally invasive treatment. Studies have shown that hand activities can be controlled and regulated by the bilateral brain. In the process of rehabilitation training, more bilateral training, especially hand rehabilitation training, can achieve better rehabilitation effects. Therefore, the rehabilitation of hand function is an important part of the rehabilitation training of these stroke patients, especially those with hand dysfunction.

[0003] At present, there are mainly large mechanical transmission type or small mechanical cable control type for hand rehabilitation training devices. Among them, the large mechanical transmission type mainly uses pneumatic or electric methods to drive the mechanical structure transmission to train the entire upper limb; the small mechanical cable control type rehabilitation gloves use the glove wearer's own power source to pull the chain or rope through the mechanical movement of the limb to control the elbow joint and hand movement of the glove to achieve the purpose of rehabilitation training.

[0004] However, both the commercially available mechanical transmission hand rehabilitation training devices and the small mechanical cable-controlled hand rehabilitation training devices have high requirements for use conditions, are relatively expensive, and have a single training mode. They can usually only be configured in special rehabilitation centers. Ordinary patients with hand dysfunction can only go to rehabilitation centers for training regularly, while bedridden patients still need artificial assisted rehabilitation. Utility Model Content

[0005] The purpose of the utility model is to provide a single finger flexion and extension rehabilitation training device, which can increase the flexibility and range of motion of the joints through active or passive training of the patient's fingers, relieve joint stiffness and muscle atrophy caused by stroke or trauma, and help restore the patient's finger muscle strength, thereby solving the technical problems described in the background technology.

[0006] In order to achieve the above object, the utility model first discloses a technical solution:

[0007] A single finger flexion and extension rehabilitation training device, the key of which is: comprising a distal finger sleeve, a middle finger sleeve and a proximal finger sleeve, the three of which are pivotally connected in pairs, and the distal finger sleeve and the middle finger sleeve are mechanically linked with a linear motion structure subject to elastic constraints, so as to counteract the flexion and extension force of the distal finger sleeve and the middle finger sleeve driven by the finger through an elastic restoring force, thereby realizing flexion and extension training of the finger.

[0008] Furthermore, the linear motion structure includes a guide rail and a slider disposed on the guide rail, and a spring is disposed between the guide rails and can be stretched or retracted as the slider slides.

[0009] Furthermore, the guide rail is installed in a shell, and the spring is detachably assembled between the slider and the shell wall of the shell.

[0010] Furthermore, hanging rings are provided at both ends of the spring, and hooks are provided on the slider and the shell wall respectively.

[0011] Furthermore, an operating opening for facilitating the disassembly and assembly of the spring is opened on the shell wall provided with the hook.

[0012] Furthermore, a distal connecting rod and a middle connecting rod are pivotally connected to the distal finger sleeve and the middle finger sleeve respectively, and the distal connecting rod end and the middle connecting rod end are pivotally connected to the slider together, and the pivoting positions of the two on the slider are variable.

[0013] Furthermore, a linear drive structure is provided below the guide rail.

[0014] Furthermore, the linear drive structure includes a slide parallel to the guide rail, a lead screw connected to the motor transmission passes through the slide, a sliding seat adapted to the lead screw is also arranged on the slide, and a slider push plate is arranged on the sliding seat.

[0015] Furthermore, the motor is a servo motor.

[0016] Furthermore, elastic bands are respectively arranged on the distal finger sleeve, the middle finger sleeve and the proximal finger sleeve.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] (1) The utility model is based on the human finger structure and motion bionics principle, and is particularly suitable for hand function rehabilitation treatment after stroke or trauma, helping to restore the patient's finger muscle strength, improve the flexibility and range of motion of the finger joints, and relieve joint stiffness and muscle atrophy caused by stroke or trauma;

[0019] (2) The utility model has both passive and active training modes. The active training mode achieves the training purpose by applying elastic resetting force to counteract the force of the patient's active flexion and extension of the fingers, while the passive training mode uses a linear drive structure to force the distal finger sleeve, middle finger sleeve and proximal finger sleeve as the exoskeleton to simulate finger flexion or extension to perform rehabilitation training. The two modes can be freely selected and applied in practice, with good flexibility and comprehensive functions.

[0020] (3) The utility model has a compact structure, low cost, and is easy to carry. It can be widely used in various scenarios such as home, hospital or rehabilitation center. Patients do not need to go to a specific location to receive rehabilitation training, which significantly improves the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0022] Figure 1 It is a three-dimensional diagram (I) of the single finger flexion and extension rehabilitation training device in Example 1;

[0023] Figure 2 It is a three-dimensional diagram (II) of the single finger flexion and extension rehabilitation training device in Example 1;

[0024] Figure 3 It is a three-dimensional diagram of the single finger flexion and extension rehabilitation training device in Example 1 (III);

[0025] Figure 4 It is a three-dimensional diagram (four) of the single finger flexion and extension rehabilitation training device in Example 1;

[0026] Figure 5 Schematic diagram of the internal structure of the single finger flexion and extension rehabilitation training device in Example 1 (I);

[0027] Figure 6 Schematic diagram of the internal structure of the single finger flexion and extension rehabilitation training device in Example 1 (II);

[0028] Figure 7 Schematic diagram of the flexion state of the single-finger flexion and extension rehabilitation training device in Example 1 (I);

[0029] Figure 8 Schematic diagram of the flexion state of the single finger flexion and extension rehabilitation training device in Example 1 (II);

[0030] Markings in the figure: 1-distal finger sleeve, 2-middle finger sleeve, 3-proximal finger sleeve, 4-linear motion structure, 5-linear drive structure, 6-elastic band, 401-guide rail, 402-slider, 403-spring, 404-housing, 405-hanging ring, 406-hook, 407-operating port, 408-distal connecting rod, 409-middle connecting rod, 501-slide, 502-motor, 503-screw, 504-sliding seat, 505-slider push plate. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0032] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0033] Figure 1 The first embodiment of the utility model is shown: a single finger flexion and extension rehabilitation training device, including a distal finger sleeve 1, a middle finger sleeve 2 and a proximal finger sleeve 3, which are pivotally connected in pairs, and the distal finger sleeve 1 and the middle finger sleeve 2 are mechanically linked with a linear motion structure 4 that is elastically constrained, so as to counteract the flexion and extension force of the distal finger sleeve 1 and the middle finger sleeve 2 driven by the finger through an elastic reset force, thereby achieving flexion and extension training of the finger. In order to achieve effective fixation of the distal, middle and proximal sections of the finger, elastic bands 6 are respectively provided on the distal finger sleeve 1, the middle finger sleeve 2 and the proximal finger sleeve 3.

[0034] See also Figures 2 to 4In a specific implementation, the linear motion structure 4 includes a guide rail 401 and a slider 402 disposed on the guide rail 401, and a spring 403 is also disposed between the guide rails 401, which can be stretched or retracted along with the sliding of the slider 402. Preferably, in order to improve the compactness of the structure, the guide rail 401 is installed in a housing 404, the spring 403 is detachably assembled between the slider 402 and the shell wall of the housing 404, and the proximal finger sleeve 3 is fixed on the housing 404. In order to facilitate the user to adjust the finger training intensity by selecting springs 403 of different specifications, hanging rings 405 are disposed at both ends of the spring 403, and hooks 406 are respectively disposed on the slider 402 and the shell wall. An operating port 407 for convenient disassembly and assembly of the spring 403 is opened on the shell wall provided with the hook 406.

[0035] like Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, in this embodiment, a distal link 408 and a middle link 409 are pivotally connected to the distal finger sleeve 1 and the middle finger sleeve 2, respectively, and the ends of the distal link 408 and the middle link 409 are pivotally connected to the slider 402, and the pivot positions of the two on the slider 402 are variable. Specifically, a bar-shaped through groove is provided at the ends of the distal link 408 and the middle link 409, so as to adaptively adjust the pivot positions of the distal link 408 and the middle link 409 on the slider 402 when the distal finger sleeve 1 and the middle finger sleeve 2 perform flexion and extension movements.

[0036] from Figure 5 and Figure 6It can be seen that, considering that some specific patients cannot actively complete the finger flexion and extension training, a linear drive structure 5 is further provided below the guide rail 401. The linear drive structure 5 includes a slide 501 parallel to the guide rail 401, a lead screw 503 connected to the motor 502 in a transmission manner passes through the slide 501, a sliding seat 504 adapted to the lead screw is further provided on the slide 501, and a slider push plate 505 is provided on the sliding seat 504. When the motor 502 drives the screw rod to rotate forward, the sliding seat 504 pushes the slider 402 to move linearly toward the distal end through the slider push plate 505. At this time, the spring 403 is stretched, and the distal finger sleeve 1 and the middle finger sleeve 2 are passively flexed under the action of the distal connecting rod 408 and the middle connecting rod 409 respectively; when the motor 502 drives the screw rod to rotate reversely, the sliding seat 504 moves linearly toward the proximal end, and the slider 402 also moves toward the proximal end under the pull of the restoring force of the spring 403. Since the slider 402 is always restricted by the push plate during the movement, the movement of the slider 402 and the sliding seat 504 is synchronized. At this time, the distal finger sleeve 1 and the middle finger sleeve 2 are passively extended under the action of the distal connecting rod 408 and the middle connecting rod 409 respectively. In order to perform the flexion and extension movement smoothly and gradually, the motor 502 adopts a servo motor 502.

[0037] In summary, the utility model is based on the human finger structure and motion bionics principles, and is particularly suitable for hand function rehabilitation treatment after stroke or trauma, which helps to restore the patient's finger muscle strength, improve the flexibility and range of motion of the finger joints, and alleviate joint stiffness and muscle atrophy caused by stroke or trauma; the utility model has both passive and active training modes, wherein the active training mode achieves the training purpose by applying elastic reset force to counteract the patient's active flexion and extension of the finger force, while the passive training mode uses the linear drive structure 5 to force the distal finger cuff 1, the middle finger cuff 2 and the proximal finger cuff 3 as the exoskeleton to simulate finger flexion or extension for rehabilitation training, and the two modes can be freely selected and applied in practice, with good flexibility and comprehensive functions; the utility model has a compact structure, low cost, and is easy to carry, and can be widely used in various scenarios such as home, hospital or rehabilitation center, and the patient does not need to go to a specific place to perform rehabilitation training, thereby significantly improving the convenience of use.

[0038] Finally, it should be noted that the technical solution disclosed above is only a preferred embodiment of the present utility model, and it certainly cannot be used to limit the scope of rights of the present utility model. Ordinary technicians in this field can understand that all or part of the processes of the above-mentioned embodiments and equivalent changes made according to the claims of the present utility model still fall within the scope covered by the utility model.

Claims

1. A single finger flexion and extension rehabilitation training device, characterized in that: The invention comprises a distal finger sleeve, a middle finger sleeve and a proximal finger sleeve, which are pivotally connected in pairs, and the distal finger sleeve and the middle finger sleeve are mechanically linked with a linear motion structure constrained by elasticity, so as to counteract the flexion and extension force of the distal finger sleeve and the middle finger sleeve driven by the finger through an elastic restoring force, thereby realizing flexion and extension training of the finger.

2. The single finger flexion and extension rehabilitation training device according to claim 1, characterized in that: The linear motion structure comprises a guide rail and a slider arranged on the guide rail, and a spring which can be stretched or retracted along with the sliding of the slider is also arranged between the guide rails.

3. The single finger flexion and extension rehabilitation training device according to claim 2, characterized in that: The guide rail is installed in a shell, and the spring is detachably assembled between the slider and the shell wall of the shell.

4. The single finger flexion and extension rehabilitation training device according to claim 3, characterized in that: Hanging rings are arranged at both ends of the spring, and hooks are arranged on the slider and the shell wall respectively.

5. The single finger flexion and extension rehabilitation training device according to claim 4, characterized in that: An operating opening for facilitating the disassembly and assembly of the spring is opened on the shell wall provided with the hook.

6. The single finger flexion and extension rehabilitation training device according to any one of claims 2 to 5, characterized in that: A distal link and a middle link are pivotally connected to the distal finger sleeve and the middle finger sleeve respectively. The distal link end and the middle link end are pivotally connected to the slider together, and the pivoting positions of the two on the slider are variable.

7. The single finger flexion and extension rehabilitation training device according to claim 6, characterized in that: A linear drive structure is also arranged below the guide rail.

8. The single finger flexion and extension rehabilitation training device according to claim 7, characterized in that: The linear drive structure comprises a slide table parallel to the guide rail, a lead screw connected to the motor transmission runs through the slide table, a sliding seat adapted to the lead screw is also arranged on the slide table, and a slider push plate is arranged on the sliding seat.

9. The single finger flexion and extension rehabilitation training device according to claim 8, characterized in that: The motor is a servo motor.

10. The single finger flexion and extension rehabilitation training device according to claim 1 or 9, characterized in that: Elastic bands are respectively arranged on the distal finger sleeve, the middle finger sleeve and the proximal finger sleeve.

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