Multifunctional multi-degree-of-freedom CPM instrument for rehabilitation training of upper limbs and fingers

Abstract

The utility model discloses a multifunctional multi-degree-of-freedom CPM instrument for upper limb and finger rehabilitation training, which comprises an electroencephalogram cap, an electroencephalogram signal amplifying device, a computer and a hand rehabilitation structure, and a plurality of electroencephalogram electrodes are arranged in the electroencephalogram cap; the plurality of electroencephalogram electrodes are electrically connected to the electroencephalogram signal amplifying device; the computer is electrically connected to the electroencephalogram signal amplifying device; the hand rehabilitation structure is electrically connected to the computer. According to the technical scheme, the brain-computer interface technology is combined, different from the traditional hand rehabilitation equipment which only carries out one kind of hand rehabilitation training, the rehabilitation training effect of a patient is guaranteed, the patient does not feel boring during rehabilitation training, the will of rehabilitation of the patient can be better promoted, and the rehabilitation effect of the patient is improved. When the brain-computer interface technology is used, electroencephalogram signals of a patient can be observed, a computer analyzes and models the electroencephalogram signals of the patient, and hand rehabilitation training is carried out by using an electroencephalogram model of the patient, so that the hand rehabilitation training is more targeted.

Description

Technical Field

[0001] This utility model relates to the field of medical rehabilitation equipment technology, and in particular to a multifunctional multi-degree-of-freedom CPM device for upper limb and finger rehabilitation training. Background Technology

[0002] The number of hemiplegic patients in my country is increasing year by year, with a significant trend towards younger onset. Most patients experience partial or complete functional impairment on one side of their body. Active and timely treatment is crucial for improving their quality of life. Traditional medications often struggle to cross the blood-brain barrier, resulting in unsatisfactory effects, and these medications are expensive. Treatment by rehabilitation physicians requires visits to specialized rehabilitation institutions, leading to long waiting times and patient frustration. Currently, the use of rehabilitation training devices is an important means of ensuring effective rehabilitation. Existing rehabilitation devices for the upper arm, forearm, and hand are mostly externally powered, with complex control systems, poor safety, and high costs, making them financially unaffordable for many patients. Furthermore, the limited range of voluntary movements often results in low patient interest in rehabilitation. Current motor imagery rehabilitation therapies do not enable synchronized movement of the affected area, making it difficult to guarantee effective rehabilitation.

[0003] In conclusion, how to design a device for rehabilitation training of the upper arm, forearm, and hand based on motor imagery is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The main objective of this utility model embodiment is to propose a multifunctional, multi-degree-of-freedom CPM instrument for upper limb and finger rehabilitation training, aiming to design a device for rehabilitation training of the upper arm, forearm, and hand based on motor imagination.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is to provide a multifunctional multi-degree-of-freedom CPM instrument for upper limb and finger rehabilitation training, including an EEG cap, an EEG signal amplification device, a computer, and a hand rehabilitation structure. The EEG cap is provided with multiple EEG electrodes; the multiple EEG electrodes are electrically connected to the EEG signal amplification device; the computer is electrically connected to the EEG signal amplification device; and the hand rehabilitation structure is electrically connected to the computer.

[0006] Furthermore, the hand rehabilitation structure includes a base, a forearm fixation frame, a front rotating base, a finger rehabilitation structure, a stepper motor, and a lead screw. The base has a sliding groove; the forearm fixation frame is movably mounted on the sliding groove of the base; the front rotating base is located at the end of the forearm fixation frame away from the base, and the front rotating base has a channel; the finger rehabilitation structure is rotatably mounted within the channel of the front rotating base; the stepper motor is located within the sliding groove of the base and is electrically connected to the computer; the lead screw is movably mounted within the sliding groove; one end of the lead screw is rotatably connected to the output nut of the motor, and the other end abuts against the forearm fixation frame.

[0007] Furthermore, the hand rehabilitation structure also includes an elbow rotation structure, which is rotatably disposed within the channel of the front rotating base; the finger rehabilitation structure is fixed to the elbow rotation structure.

[0008] Furthermore, the finger rehabilitation structure includes a palm support, a palm liner, a push rod motor, a linkage assembly, a finger rest, and a wiring base. The palm support is fixed within the elbow rotation structure; the palm liner is fixed to one side of the palm support; the push rod motor is electrically connected to the computer; the push rod motor is fixed to the other side of the palm support; the linkage assembly is rotatably fixed to one end of the palm away from the elbow rotation structure, and the output shaft of the push rod motor is connected to the movable joint rod of the linkage assembly; the finger rest is fixed to the linkage assembly; the wiring base is arranged side-by-side with the push rod motor on the palm support, and the wiring base is electrically connected to the push rod motor.

[0009] Furthermore, the hand rehabilitation structure also includes a posterior arm fixation frame, and the forearm fixation frame is rotatably connected to one end of the forearm fixation frame away from the front rotating base. The forearm fixation frame is rotatably connected to the posterior arm fixation frame via a hinge.

[0010] Furthermore, both the forearm fixation bracket and the rear arm fixation bracket are equipped with straps.

[0011] Furthermore, the hand rehabilitation structure also includes a circuit board, which is disposed on the base, and the stepper motor is electrically connected to the computer through the circuit board; the base is provided with an emergency stop switch, which is electrically connected to the circuit board.

[0012] Furthermore, the forearm fixation frame is provided with a telescopic button, which is electrically connected to the circuit board.

[0013] This invention combines brain-computer interface (BCI) technology, differing from previous hand rehabilitation devices that only performed one type of hand rehabilitation training. This application not only ensures the effectiveness of rehabilitation training for patients but also prevents boredom during training, thus promoting their willingness to recover. Using BCI technology, the patient's brain signals can be observed, and the computer analyzes and models these signals. Using the patient's own brain model for hand rehabilitation training is more targeted. The computer can also guide the patient to actively visualize hand rehabilitation training through voice prompts and animations. This combination of active and passive training is more beneficial for the patient's recovery. Furthermore, its hand rehabilitation functions are far superior to traditional hand rehabilitation devices, allowing for targeted training based on the patient's needs. Patients can focus on hand rehabilitation training during treatment, avoiding the poor results caused by purely mechanical training. The entire device occupies relatively little space, making it more suitable for use in space-constrained environments such as hospital wards and patient residences. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the multifunctional multi-degree-of-freedom CPM instrument for upper limb and finger rehabilitation training described in this utility model;

[0016] Figure 2 This is a schematic diagram of the hand rehabilitation structure described in this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the base described in this utility model;

[0018] Figure 4 This is a schematic diagram of the finger rehabilitation structure described in this utility model.

[0019] Explanation of icon numbers:

[0020]

[0021] Detailed Implementation

[0022] 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.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "several" or "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] This invention proposes a multifunctional, multi-degree-of-freedom CPM device for upper limb and finger rehabilitation training, aiming to design a rehabilitation device that can be used for multi-mode rehabilitation exercises of the forearm, hindarm, and fingers.

[0028] The specific structure of the multifunctional, multi-degree-of-freedom CPM device for upper limb and finger rehabilitation training proposed in this utility model will be described below in specific embodiments:

[0029] In the technical solution of this embodiment, such as Figure 1 As shown, a multifunctional multi-degree-of-freedom CPM device for upper limb and finger rehabilitation training includes an EEG cap 10, an EEG signal amplification device 20, a computer 30, and a hand rehabilitation structure 40. The EEG cap 10 is provided with multiple EEG electrodes; the multiple EEG electrodes are electrically connected to the EEG signal amplification device 20; the computer 30 is electrically connected to the EEG signal amplification device 20; and the hand rehabilitation structure 40 is electrically connected to the computer 30.

[0030] Understandably, by combining brain-computer interface technology, this application differs from previous single-device hand rehabilitation equipment that only performs one type of hand rehabilitation training. It ensures the effectiveness of the patient's rehabilitation training while preventing boredom and promoting the patient's willingness to recover. Using brain-computer interface technology, the patient's brain signals can be observed. The computer 30 analyzes and models these signals, using the patient's own brain model for more targeted hand rehabilitation training. The computer 30 can also guide the patient to actively visualize hand rehabilitation training through voice prompts and animation demonstrations. This combination of active and passive training is more beneficial for the patient's recovery. Furthermore, it completely surpasses traditional hand rehabilitation equipment in terms of hand rehabilitation function, allowing for targeted training based on the patient's needs. Patients can focus on hand rehabilitation training during treatment, avoiding the poor results caused by purely mechanical training. The entire device occupies relatively little space, making it more suitable for use in space-constrained environments such as hospital wards and patient residences.

[0031] Furthermore, such as Figure 2 , Figure 3 , Figure 4 As shown, the hand rehabilitation structure 40 includes a base 41, a forearm fixation frame 42, a front rotating base 44, a finger rehabilitation structure 46, a stepper motor 47, and a lead screw 48. The base 41 has a sliding groove. The forearm fixation frame 42 is movably disposed on the sliding groove of the base 41. The front rotating base 44 is disposed at the end of the forearm fixation frame 42 away from the base 41, and the front rotating base 44 has a channel. The finger rehabilitation structure 46 is rotatably disposed in the channel of the front rotating base 44. The stepper motor 47 is disposed in the sliding groove of the base 41 and is electrically connected to the computer 30. The lead screw 48 is movably disposed in the sliding groove. One end of the lead screw 48 is rotatably connected to the output nut of the motor, and the other end abuts against the forearm fixation frame 42.

[0032] Understandably, by setting a movable forearm fixation frame 42 on the base 41, the forearm on the forearm fixation frame 42 can reciprocate relative to the base 41. The finger rehabilitation structure 46 is rotatably mounted on the front rotating base 44. The finger rehabilitation structure 46 is used to drive the patient's fingers to open and close, thereby exercising the patient's finger movement. The finger rehabilitation structure 46 can rotate on the front rotating base 44, allowing the patient's wrist to rotate radially within a certain range. This utility model integrates multiple training modules together, unlike previous single-device rehabilitation equipment that only performs one type of rehabilitation training. This ensures the effectiveness of the patient's rehabilitation training and prevents the patient from feeling bored during rehabilitation training, thus promoting the patient's willingness to recover. Moreover, in terms of finger rehabilitation function, it is completely superior to traditional finger rehabilitation equipment, and can provide targeted training according to the patient's needs. Furthermore, the entire equipment occupies relatively little space, making it more suitable for use in places with limited space, such as wards and patient residences. The stepper motor 47 is electrically connected to the computer 30 via the circuit board 416. The circuit board 416 controls the rotation of the stepper motor 47, which in turn drives the lead screw 48 to move along the length of the sliding groove on the base 41. The other end of the lead screw 48 abuts against the forearm fixation frame 42. When the lead screw 48 moves, the forearm fixation frame 42 moves within the sliding groove, so that the forearm fixed on the forearm fixation frame 42 can perform rehabilitation movements in the axial direction.

[0033] In one embodiment of this utility model, such as Figure 2 , Figure 3 , Figure 4 As shown, the hand rehabilitation structure 40 also includes an elbow rotation structure 45, which is rotatably disposed in the channel of the front rotating base 44; the finger rehabilitation structure 46 is fixed on the elbow rotation structure 45.

[0034] Understandably, the elbow rotation structure 45 consists of a gear set, including gears and a rotating ring. The gears are rotatably fixed on the forearm fixation frame 42, and the rotating ring is rotatably mounted on the forearm fixation frame 42 and meshes with the gears so that the rotating ring can rotate on the forearm fixation frame 42. The finger rehabilitation structure 46 is fixed on the elbow rotation structure 45.

[0035] In one embodiment of this utility model, such as Figure 3 , Figure 4As shown, the finger rehabilitation structure 46 includes a palm support 411, a palm liner 413, a push rod motor 49, a linkage assembly 410, a finger support 412, and a wiring base 414. The palm support 411 is fixed inside the elbow rotation structure 45; the palm liner 413 is fixed to one side of the palm support 411; the push rod motor 49 is fixed to the other side of the palm support 411 and is electrically connected to the computer 30; the linkage assembly 410 is rotatably fixed at one end between the palms away from the elbow rotation structure 45, and the output shaft of the push rod motor 49 is connected to the movable joint rod of the linkage assembly 410; the finger support 412 is fixed on the linkage assembly 410; the wiring base 414 is arranged side by side with the push rod motor 49 on the palm support 411 and is electrically connected to the push rod motor 49.

[0036] Understandably, the push rod motor 49 is electrically connected to the computer 30, and the computer 30 controls the movement of the push rod motor 49. The palm liner 413 on the palm support 411 is used to fix the palm, and the finger support 412 on the linkage assembly 410 is used to fix the fingers. The output shaft of the push rod motor 49 pushes the movable joint rod of the linkage assembly 410 in the front-back direction, causing the movable joint rod to bend, thereby causing the patient's fingers to perform bending rehabilitation exercises.

[0037] In one embodiment of this utility model, such as Figure 2 , Figure 3 As shown, the hand rehabilitation structure 40 also includes a posterior arm fixation frame 43, and a forearm fixation frame 42 is rotatably connected to the end of the forearm fixation frame 42 away from the front rotating base 44. The forearm fixation frame 42 is rotatably connected to the posterior arm fixation frame 43 via a hinge.

[0038] Understandably, the rear arm mounting bracket 43 is used to fix the rear arm, and the rear arm mounting bracket 43 is connected to the forearm mounting bracket 42 by a hinge so that the rotation angle between the forearm mounting bracket 42 and the rear arm mounting bracket 43 is between ° and °, so that the forearm on the forearm mounting bracket 42 and the rear arm on the rear arm mounting bracket 43 can form an angle between ° and °.

[0039] In one embodiment of this utility model, such as Figure 3 As shown, the hand rehabilitation structure 40 also includes a stepper motor 47 and a lead screw 48. The stepper motor 47 is located in the sliding groove of the base 41; the lead screw 48 is movably located in the sliding groove; and one end of the lead screw 48 is rotatably connected to the output nut of the motor, while the other end abuts against the forearm fixation frame 42.

[0040] Understandably, the stepper motor 47 is electrically connected to the circuit board 416, which controls the rotation of the stepper motor 47, thereby driving the lead screw 48 to move along the length of the sliding groove on the base 41. The other end of the lead screw 48 abuts against the forearm fixation frame 42. When the lead screw 48 moves, the forearm fixation frame 42 moves in the sliding groove, so that the forearm fixed on the forearm fixation frame 42 can perform rehabilitation movements in the axial direction.

[0041] In one embodiment of this utility model, such as Figure 2 , Figure 3 , Figure 4 As shown, both the forearm fixation bracket 42 and the rear arm fixation bracket 43 are equipped with straps 417.

[0042] Understandably, by providing straps 417 on the forearm retainer 42 and the rear arm retainer 43, the rear arm is secured to the rear arm retainer 43 and the forearm is secured to the forearm retainer 42.

[0043] In one embodiment of this utility model, such as Figure 3 As shown, the hand rehabilitation structure 40 also includes a circuit board 416, which is mounted on the base 41. The stepper motor 47 is electrically connected to the computer 30 through the circuit board 416. An emergency stop switch 415 is mounted on the base 41 and is electrically connected to the circuit board 416.

[0044] Understandably, the emergency stop switch 415 is electrically connected to the circuit board 416 to stop the movement of the stepper motor 47 in an active state. The circuit board 416 is electrically connected to the push rod motor 49 to control the forward or backward movement of the push rod motor 49.

[0045] In one embodiment of this utility model, a telescopic button is provided on the forearm fixing bracket 42, and the telescopic button is electrically connected to the circuit board 416.

[0046] Understandably, by setting a telescopic knob, the rotation direction of the stepper motor 47 is controlled, thereby controlling the forearm holder 42 to move forward or backward within the sliding groove.

[0047] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A multifunctional, multi-degree-of-freedom CPM device for upper limb and finger rehabilitation training, characterized in that, include: An EEG cap, wherein multiple EEG electrodes are disposed inside the EEG cap; An electroencephalogram (EEG) signal amplification device, wherein a plurality of the EEG electrodes are electrically connected to the EEG signal amplification device; A computer, which is electrically connected to the EEG signal amplification device; and A hand rehabilitation structure, which is electrically connected to the computer.

2. The multifunctional multi-degree-of-freedom CPM device for upper limb and finger rehabilitation training according to claim 1, characterized in that, The hand rehabilitation structure includes: A base having a sliding groove; Forearm mounting bracket, the forearm mounting bracket is movably mounted on the sliding groove of the base; A front rotating base is located at the end of the forearm fixing frame away from the base, and the front rotating base forms a channel. A finger rehabilitation structure, wherein the finger rehabilitation structure is rotatably disposed within the channel of the front rotating base; A stepper motor, wherein the stepper motor is disposed within a sliding groove in the base and is electrically connected to the computer; and A lead screw is movably disposed within the sliding groove; one end of the lead screw is rotatably connected to the output nut of the motor, and the other end abuts against the forearm fixing frame.

3. The multifunctional multi-degree-of-freedom CPM device for upper limb and finger rehabilitation training according to claim 2, characterized in that, The hand rehabilitation structure also includes: The elbow rotation structure is rotatably disposed within the channel of the front rotating base; the finger rehabilitation structure is fixed to the elbow rotation structure.

4. The multifunctional multi-degree-of-freedom CPM device for upper limb and finger rehabilitation training according to claim 3, characterized in that, The finger rehabilitation structure includes: A palm support, which is fixed within the elbow rotation structure; Palm liner, the palm liner being fixed to one side of the palm support; A push rod motor is fixed to the other side of the palm support and is electrically connected to the computer; A linkage assembly, wherein the linkage assembly is rotatably fixed between the palms at one end away from the elbow rotation structure, and the output shaft of the push rod motor is connected to the movable joint rod of the linkage assembly; Finger rest, the finger rest being fixed to the link assembly; and A wiring base is provided, which is arranged side by side with the push rod motor on the palm support, and the wiring base is electrically connected to the push rod motor.

5. The multifunctional multi-degree-of-freedom CPM device for upper limb and finger rehabilitation training according to claim 2, characterized in that, The hand rehabilitation structure also includes: The rear arm mounting bracket is rotatably connected to the end of the forearm mounting bracket away from the front rotating base, and the forearm mounting bracket is rotatably connected to the rear arm mounting bracket via a hinge.

6. The multifunctional multi-degree-of-freedom CPM device for upper limb and finger rehabilitation training according to claim 5, characterized in that, Both the forearm fixation bracket and the rear arm fixation bracket are equipped with straps.

7. The multifunctional multi-degree-of-freedom CPM device for upper limb and finger rehabilitation training according to claim 2, characterized in that, The hand rehabilitation structure also includes: A circuit board is mounted on the base, and the stepper motor is electrically connected to the computer via the circuit board; An emergency stop switch is provided on the base, and the emergency stop switch is electrically connected to the circuit board.

8. The multifunctional multi-degree-of-freedom CPM device for upper limb and finger rehabilitation training according to claim 7, characterized in that, The forearm support is equipped with a telescopic button, which is electrically connected to the circuit board.

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