A hand injury rehabilitation training cup teaching aid

Abstract

The application discloses a hand injury rehabilitation training cup teaching aid, which comprises a quadrangular prism structure with a cavity, and the cross section of the quadrangular prism is trapezoidal; the teaching aid comprises a top plate, side plates and a base, the base is integrally formed by three side surfaces and a bottom surface except the side plates, the top plate and the side plates are detachably connected with the base to close the cavity; the top plate and the side plates are respectively provided with finger joint fixing rings with sliding rails, two fixing rings are alternatively assembled for use to realize finger joint fixing training at different angles; at least four third sliding rails are arranged side by side on the side surface of the base opposite to the side plates, at least one third finger joint fixing ring capable of sliding and being fixed on each third sliding rail is arranged on each third sliding rail; mirror surfaces are arranged on the inner walls of the three side surfaces of the base, and the mirror surfaces are perpendicular to each other.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a teaching aid for hand injury rehabilitation training cup. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] The hand has complex functions, including 13 basic functions such as grasping and pinching. The functional position of the hand is the anatomical basis for these functions. It is characterized by wrist dorsiflexion of 20°-25° with ulnar deviation of 10°, thumb fully abducted and opposed to the palm with slight flexion of the interphalangeal joints, the other four fingers in a semi-ball-like position, and the metacarpophalangeal joints and proximal interphalangeal joints in semi-flexion. This position can maintain the extension of the collateral ligaments, ensure thumb opposition, and prevent web adhesions and limited joint movement, which is crucial for the rehabilitation of patients with hand injuries.

[0004] Existing hand injury rehabilitation devices have the following technical defects:

[0005] Insufficient maintenance of functional position and adaptability: Traditional rehabilitation tools are mostly standardized designs, which cannot accurately fit the hand anatomy of different patients and are difficult to maintain the functional position of the hand stably. In particular, they cannot take into account the hand splint fixation position of patients with hand burns, which can easily lead to unstable fixation, uneven pressure or functional position deviation, affecting the rehabilitation effect.

[0006] Low precision of targeted joint locking: Functional impairments in patients with hand injuries are often concentrated in specific joints (such as the proximal / distal interphalangeal joints of the four fingers, the flexion-extension joint of the thumb, or the opposition joint). However, existing rehabilitation devices lack targeted locking structures and cannot accurately lock the targeted joints in a passive extension position, making it difficult to meet the core clinical need for "on-demand rehabilitation".

[0007] Insufficient integration of rehabilitation principles: Existing products mostly rely on a single passive fixation or active training mode, without incorporating mature technologies in the field of neurorehabilitation. On the one hand, they lack mirror therapy mechanisms based on visual feedback, failing to utilize the brain's neural plasticity and mirror neuron system to promote the recovery of motor function; on the other hand, they do not fully utilize the core logic of neurodevelopmental therapy (NDT), namely guiding motor output through sensory input, making it difficult to promote the recovery of hand stability and motor control through precise sensory feedback (such as pressure sensation and proprioception).

[0008] Lack of targeted thumb training: Thumb function accounts for more than 50% of hand function and is key to the core function of the hand. However, existing rehabilitation tools lack specific designs for thumb flexion and extension, opposition, and finger opposition training, which cannot meet the needs of thumb-specific rehabilitation. This leads to slow recovery of thumb function and affects the overall reconstruction of hand function. Summary of the Invention

[0009] To address the shortcomings of existing technologies, this invention proposes a hand injury rehabilitation training cup, which integrates structural innovation with rehabilitation principles to achieve hand functional positioning maintenance, precise targeting of joints, and multimodal rehabilitation training. It is suitable for rehabilitation training of patients with hand injuries such as tendon injuries, joint inflammation, and hand burns, and is particularly relevant for clinical rehabilitation scenarios requiring hand joint movement disorders, sensory impairment, and motor function recovery.

[0010] A hand injury rehabilitation training cup teaching aid includes:

[0011] The main body of the teaching aid is a quadrangular prism structure with a cavity, and the cross-section of the quadrangular prism is trapezoidal; the trapezoid is an isosceles trapezoid, and the vertex angle ranges from 120° to 135°;

[0012] The teaching aid includes a top plate, side plates, and a base. The base is integrally formed from three sides (excluding the side plates) and a bottom surface. The top plate and side plates are detachably connected to the base.

[0013] The top plate is provided with at least one first slide rail and a first finger joint fixing ring that can slide and be fixed along the first slide rail; the side plate is provided with at least one second slide rail and a second finger joint fixing ring that can slide and be fixed along the second slide rail. The first finger joint fixing ring and the second finger joint fixing ring are selectively installed on the teaching aid; multiple slide rails on the same surface are selectively installed with joint fixing rings to adapt to different hand sizes. The first finger joint fixing ring and the second finger joint fixing ring are both used to fix the patient's thumb joint. One of them is selected to fix the functional posture of the thumb. The first finger joint fixing ring is used for thumb flexion and extension training, and the second finger joint fixing ring is used for thumb opposition and finger opposition training.

[0014] At least four third slide rails are arranged side by side on the side of the base opposite to the side plate. Each third slide rail is provided with at least one third finger joint fixing ring that can slide and be fixed along it. The third slide rails and third finger joint fixing rings are used to fix four finger joints. Multiple third slide rails are used to adapt to different hand sizes. The number of third finger joint fixing rings in the slide rails is set according to the needs of rehabilitation training to adapt to control the proximal or distal interphalangeal joints, accurately lock the target joint in the passive extension position, slide and fix it to adapt to the differences in finger length and joint position of different patients, and ensure the accuracy of target joint locking.

[0015] The inner walls of the three sides of the base are each provided with a mirror, and the mirrors are perpendicular to each other. This is used to cooperate with mirror therapy (MT) to achieve visual feedback, so that when the affected hand moves synchronously inside the cup and the healthy hand moves outside the cup, a visual illusion is created, activating the brain's motor-related areas and reconstructing neural pathways.

[0016] In some embodiments, the main body of the teaching aid is a multi-prism structure with a cavity or an arc-shaped prism, which fits the palm better.

[0017] In some embodiments, the first finger joint fixing ring, the second finger joint fixing ring, and the third finger joint fixing ring each include a fixing ring body and a slider that cooperates with a corresponding slide rail. The slider includes a gear, two racks that mesh with the gear, and a spring for driving the racks to return to their original position. Each rack has a fixing protrusion at its front end, and the slide rail has multiple grooves that cooperate with the fixing protrusion.

[0018] The main body of the retaining ring is axially fixedly connected to the gear by a key;

[0019] Rotating the retaining ring body drives the gear to rotate, which in turn drives two centrally symmetrical racks to move towards each other, retracting the retaining protrusion and compressing the spring. At this time, the knuckle retaining ring can slide along the slide rail. After sliding to a predetermined position, the retaining ring body is released, and the spring drives the racks to move in the opposite direction, causing the retaining protrusion to extend and engage with the corresponding groove in the slide rail, thus fixing the knuckle retaining ring. Through the linkage design of gear-rack-spring, the knuckle retaining ring can be slidable and locked, and can be operated with one hand.

[0020] In some embodiments, the slide rail has a T-shaped cross-section, including a horizontally extending slider groove and a key groove that vertically penetrates the slider groove. The slider is accommodated within the slider groove and can slide along it. The slider groove has a plurality of grooves on its sidewalls or bottom wall. The key passes through the key groove and connects to the gear. The T-shaped cross-section structure of the slide rail provides a stable running track and mounting base for the knuckle retaining ring slider.

[0021] In some embodiments, the retaining ring body is made of a resilient medical-grade rubber material. The resilient medical-grade rubber ensures safety upon skin contact and utilizes its flexibility to accommodate fingers of different sizes.

[0022] In some embodiments, the first, second, and third slide rails all extend to the edge of the plate they are located on. A detachable buckle is provided at a corresponding position on the edge of the plate. The buckle has a protrusion, and the end of the slide rail or the edge of the plate has a recess that engages with the protrusion. This detachable buckle design allows the knuckle retaining rings to be directly attached and detached from the end of the slide rail, controlling the number of knuckle retaining rings in the slide rail as needed.

[0023] In some embodiments, the distance between adjacent slide rails is 1.5-3cm.

[0024] In some embodiments, the base is provided with suction cups on its bottom surface, which can make the teaching aids firmly adhere to the table surface, preventing slippage or tipping when held or subjected to force training with one hand, while also reducing the difficulty of adjusting the equipment with one hand.

[0025] In some embodiments, the top plate has a downwardly extending protrusion on its side, and the base has a groove on its edge that connects with the top plate. The top plate is detachably connected to the base through the cooperation of the protrusion and the groove.

[0026] The top and bottom edges of the side plate are respectively provided with protrusions, and the corresponding positions of the top plate and the base are provided with grooves that are adapted to the protrusions. The side plate is detachably connected to the top plate and the base through the cooperation of the protrusions and grooves.

[0027] A bimanual rehabilitation training system includes two hand injury rehabilitation training cups, the two cups being mirror-symmetrical in structure. It is used for the rehabilitation of different hands.

[0028] The cup body is 10-12cm in length and 8-10cm in height, with an overall weight of ≤100g. All joints on the cup body are rounded with a radius of 3-5mm to prevent sharp edges from scratching the patient's hands. The cup body surface has an anti-slip texture distributed on both sides and the bottom, with a texture depth of 0.3-0.5mm, enhancing grip and preventing the cup from slipping during training.

[0029] Beneficial effects

[0030] Precisely maintains functional position and has wider adaptability: The trapezoidal structure perfectly fits the anatomical features of the hand's functional position, which can not only stably maintain the functional position posture of the wrist joint, thumb and four fingers, but also accommodate the hand splint fixation position of patients with hand burns. It solves the problems of poor adaptability and unstable maintenance of functional position of traditional products, and is suitable for hand trauma patients of different types and different rehabilitation stages.

[0031] Precise joint targeting enables on-demand rehabilitation: The four buckles and sliding rail structure on the right side can be independently adjusted to precisely fit the proximal or distal interphalangeal joints of the four fingers. The exclusive buckles on the left side and top are designed for thumb-specific training, achieving "precise joint targeting and on-demand matching of rehabilitation needs," thus solving the clinical pain point that existing products cannot accurately target specific functional impairments.

[0032] Integrating dual rehabilitation principles enhances rehabilitation efficiency: On the one hand, mirror therapy is achieved through double-sided mirrors and transparent sides, using visual illusions to activate the mirror neuron system and rebuild damaged neural pathways; on the other hand, cup-grip training provides deep joint pressure sensory input, promoting sensory-motor feedback loops based on neurodevelopmental therapy. The synergistic effect of these two principles significantly improves the speed and stability of motor function recovery.

[0033] Strengthen thumb-specific training to ensure core function: In view of the importance of thumb function, we have designed exclusive flexion and extension training clips and palm-to-finger and palm-to-palm training clips to achieve comprehensive thumb rehabilitation, effectively promote thumb function recovery, and thus improve the overall hand function reconstruction effect.

[0034] Lightweight and comfortable structure, higher compliance: The cup body is made of medical-grade environmentally friendly materials, molded in one piece with rounded corners, and equipped with flexible cushioning pads and anti-slip textures. It is comfortable to wear, easy to operate, and lightweight, reducing patient discomfort during training and improving compliance with rehabilitation training. Attached Figure Description

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, and the advantages of the present invention in the above and / or other aspects will become clearer.

[0036] Figure 1 This is a schematic diagram of the overall structure of this solution;

[0037] Figure 2 This is an exploded view of the structure of this scheme;

[0038] Figure 3 This is a schematic diagram of the joint fixation ring structure in this design.

[0039] Figure 4 This is a schematic diagram of the internal structure of the joint fixing ring slider in this solution;

[0040] Figure 5 This is a disassembly diagram of the solution.

[0041] The reference numerals in the attached drawings are as follows: 1-top plate; 101-first slide rail; 102-first finger joint fixing ring; 2-side plate; 201-second slide rail; 202-second finger joint fixing ring; 3-base; 301-third slide rail; 302-third finger joint fixing ring; 4-fixing ring body; 5-slider; 501-gear; 502-rack; 503-spring; 504-protrusion; 6-buckle; 7-mirror. Detailed Implementation

[0042] A hand injury rehabilitation training cup teaching aid includes:

[0043] The main body of the teaching aid is a quadrangular prism structure with a cavity, and the cross-section of the quadrangular prism is trapezoidal;

[0044] like Figure 1-2 As shown, the teaching aid includes a top plate 1, a side plate 2, and a base 3. The base 3 is integrally formed by the three sides (excluding the side plate 2) and the bottom surface. The top plate 1 and the side plate 2 are detachably connected to the base 3 to seal the cavity.

[0045] The top plate 1 is provided with at least one first slide rail 101 and a first knuckle fixing ring 102 that can slide and be fixed along the first slide rail 101; the side plate 2 is provided with at least one second slide rail 201 and a second knuckle fixing ring 202 that can slide and be fixed along the second slide rail 201, and the first knuckle fixing ring 102 and the second knuckle fixing ring 202 are selectively installed on the teaching aid.

[0046] At least four third slide rails 301 are arranged side by side on the side of the base 3 opposite to the side plate 2. Each third slide rail 301 is provided with at least one third finger joint fixing ring 302 that can slide and be fixed along it.

[0047] The inner walls of the three sides of the base 3 are all provided with mirror surfaces.

[0048] like Figure 3-4 As shown, the first finger joint fixing ring 102, the second finger joint fixing ring 202 and the third finger joint fixing ring 302 all include a fixing ring body 4 and a slider 5 that cooperates with the corresponding slide rail. The slider 5 includes a gear 501, two racks 502 that mesh with the gear 501 and a spring 503 for driving the racks 502 to reset. Each rack 502 has a fixing protrusion 504 at its front end, and the slide rail has multiple grooves that cooperate with the fixing protrusion 504.

[0049] The fixed ring body 4 is axially fixedly connected to the gear 501 via a key 41;

[0050] Rotating the fixing ring body 4 can drive the gear 501 to rotate, thereby driving the two centrally symmetrical racks 502 to move towards each other to retract the fixing protrusion 504 and compress the spring 503. At this time, the knuckle fixing ring can slide along the slide rail. After sliding to the predetermined position, the fixing ring body 4 is released, and the spring 503 drives the racks 502 to move in the opposite direction, so that the fixing protrusion 504 extends out and is inserted into the corresponding groove of the slide rail, thereby fixing the knuckle fixing ring.

[0051] The slide rail has a T-shaped cross-section, including a horizontally extending slider groove and a key groove that runs vertically through the slider groove. The slider 5 is accommodated in the slider groove and can slide along it. The key 41 passes through the key groove and is connected to the gear 501.

[0052] The fixing ring body 4 is made of elastic medical rubber material.

[0053] The first slide rail 101, the second slide rail 201 and the third slide rail 301 all extend to the edge of the plate they are on. A detachable buckle 6 is provided at the corresponding position of the edge of the plate. The buckle 6 has a protrusion. The end of the slide rail or the edge of the plate has a recess that engages with the protrusion.

[0054] The base 3 has a suction cup on its bottom surface.

[0055] The top plate 1 has a downwardly extending protrusion on its side, and the base 3 has a groove on its edge that connects with the top plate 1. The top plate 1 is detachably connected to the base 3 through the cooperation of the protrusion and the groove.

[0056] The top and bottom edges of the side plate 2 are respectively provided with protrusions, and the corresponding positions of the top plate 1 and the base 3 are provided with grooves that are adapted to the protrusions. The side plate 2 is detachably connected to the top plate 1 and the base 3 through the cooperation of the protrusions and grooves.

[0057] The steps for using this device are as follows:

[0058] Step 1: Preparation. Attach the suction cups at the bottom of the base to the table surface as needed to prevent slippage during training. According to the rehabilitation plan (e.g., thumb flexion / extension, palmar or finger opposition training), select and install the first or second finger joint fixation ring onto the corresponding slide rail on the top or side plate. Rotate the fixation ring and slide the selected thumb fixation ring to a position suitable for the patient's thumb length and joint position. Release the main body of the fixation ring to lock it in place.

[0059] For the target interphalangeal joint (proximal or distal) that needs to be locked, a corresponding number of third joint fixing rings are installed on the third slide rail for each finger (usually one ring locks one joint). These rings are then slid and adjusted to precisely cover the target joint before locking. The multi-slide rail design can accommodate different finger spacings.

[0060] Step 2: Perform joint training. Place the thumb into the corresponding thumb fixation ring, and place the other four fingers into the respective finger joint fixation rings on their respective slide rails. The fixation rings precisely lock the specific joints in the desired position (e.g., extended position). Based on this passive fixation, the patient actively performs isometric muscle contractions or attempts to move adjacent joints that are not fixed, completing targeted strength or range of motion training.

[0061] Step 3: As Figure 5As shown, disassemble the components to prepare for mirror therapy, removing the removable clips at the ends of the slide rails. Slide all the knuckle retainer rings along the slide rails and remove them from the edges for easy cleaning or adjustment for next use. Gently pull the side panels outwards to disengage their protrusions from the grooves in the top panel and base, then remove the side panels. Lift the top panel upwards to disengage its protrusions from the groove in the base, then remove the top panel. At this point, only the base with three mirrors remains of the teaching aid. Secure the base to the tabletop using the suction cups at the bottom.

[0062] Step 4: Perform mirror therapy.

[0063] Rehabilitation Principle: This device utilizes a three-fold mirror to create a surround visual space, operating based on the principle of mirror visual feedback therapy. The movement of the healthy hand forms a seamless, three-dimensional image of the affected hand's movement in the mirror. When the patient gazes at this image, the brain's visual and sensorimotor cortex interprets it as the affected hand moving freely. This process activates neural representations in the bilateral premotor cortex and primary sensorimotor cortex, promoting the formation and execution of motor intentions, aiding in the reconstruction of damaged motor control circuits, and potentially inhibiting pain-related abnormal cortical reorganization. The transparent side design allows therapists to directly observe the actual position and posture of the affected hand, ensuring treatment safety and providing patients with visual references for perceptual correction.

[0064] Step 4-1: Limb positioning and mirror construction. Place the affected hand on the outside and the healthy hand on the mirror area. Adjust the position so that the mirror image of the healthy hand visually overlaps with the actual position of the affected hand.

[0065] Step 4-2: Visual guidance and focusing. Instruct the patient to perform the action using the healthy side, while focusing their gaze on the image of the affected side in the mirror to establish visual feedback.

[0066] Step 4-3: Integrate intention and synchronize movement. Guide the patient to have the intention that the affected side should follow the mirror image movement. In the middle and later stages, try to drive the actual movement of the affected side, striving for synchronization between vision and movement.

[0067] Step 4-4: Monitoring and sensory feedback. Observe the condition of the affected side from the outside, provide rousal stimulation and correct posture through verbal prompts or appropriate manual guidance.

[0068] Steps 4-5: Assessment and advanced training. Assess the range of motion, pain, and quality of task completion on the affected side, and gradually increase the complexity, resistance, or functional difficulty of the movement.

[0069] Step 5: Combining training and cycling, the "Joint Training in Step 2" and "Mirror Therapy in Step 4" constitute a complete training unit. Cyclic training.

[0070] This invention provides a concept and method for a hand injury rehabilitation training cup teaching aid. There are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention.

Claims

1. A teaching aid for hand injury rehabilitation training cup, characterized in that, include: The main body of the teaching aid is a quadrangular prism structure with a cavity, and the cross-section of the quadrangular prism is trapezoidal; The teaching aid includes a top plate (1), side plates (2) and a base (3). The base (3) is integrally formed by the three sides (excluding the side plates (2)) and the bottom surface. The top plate (1) and the side plates (2) are detachably connected to the base (3) to close the cavity. The top plate (1) is provided with at least one first slide rail (101) and a first knuckle fixing ring (102) that can slide and be fixed along the first slide rail (101); the side plate (2) is provided with at least one second slide rail (201) and a second knuckle fixing ring (202) that can slide and be fixed along the second slide rail (201), wherein the first knuckle fixing ring (102) and the second knuckle fixing ring (202) are optionally installed on the teaching aid; At least four third slide rails (301) are arranged side by side on the side opposite to the side plate (2) of the base (3), and each third slide rail (301) is provided with at least one third finger joint fixing ring (302) that can slide and be fixed along it. The inner walls of the three sides of the base (3) are all provided with mirrors, and the mirrors are perpendicular to each other.

2. The hand injury rehabilitation training cup teaching aid according to claim 1, characterized in that, The first finger joint fixing ring (102), the second finger joint fixing ring (202) and the third finger joint fixing ring (302) each include a fixing ring body (4) and a slider (5) that cooperates with the corresponding slide rail. The slider (5) includes a gear (501), two racks (502) that mesh with the gear (501) and a spring (503) for driving the racks (502) to reset. Each rack (502) has a fixing protrusion (504) at its front end. The slide rail has multiple grooves that cooperate with the fixing protrusions (504). The fixed ring body (4) is axially fixedly connected to the gear (501) by a key (41); Rotating the fixing ring body (4) can drive the gear (501) to rotate, thereby driving the two centrally symmetrical racks (502) to move towards each other to retract the fixing protrusion (504) and compress the spring (503). At this time, the knuckle fixing ring can slide along the slide rail. After sliding to the predetermined position, the fixing ring body (4) is released, and the spring (503) drives the rack (502) to move in the opposite direction, so that the fixing protrusion (504) extends out and is inserted into the corresponding groove of the slide rail, thereby fixing the knuckle fixing ring.

3. The hand injury rehabilitation training cup teaching aid according to claim 2, characterized in that, The slide rail has a T-shaped cross section, including a horizontally extending slider groove and a key groove that vertically penetrates the slider groove. The slider groove has multiple grooves on its side wall or bottom wall. The slider (5) is accommodated in the slider groove and can slide along it. The key (41) passes through the key groove and is connected to the gear (501).

4. The hand injury rehabilitation training cup teaching aid according to claim 3, characterized in that, The fixing ring body (4) is made of elastic medical rubber material.

5. The hand injury rehabilitation training cup teaching aid according to claim 1, characterized in that, The first slide rail (101), the second slide rail (201) and the third slide rail (301) all extend to the edge of the plate they are on. A detachable buckle (6) is provided at the corresponding position of the edge of the plate. The buckle (6) has a protrusion. The end of the slide rail or the edge of the plate has a recess that engages with the protrusion. The buckle (6) closes or opens the end of the slide rail to restrict or allow the knuckle fixing ring to be inserted or removed from the end of the slide rail.

6. The hand injury rehabilitation training cup teaching aid according to claim 1, characterized in that, The distance between adjacent slide rails is 1.5-3cm.

7. The hand injury rehabilitation training cup teaching aid according to claim 1, characterized in that, The base (3) has a suction cup on its bottom surface.

8. The hand injury rehabilitation training cup teaching aid according to claim 1, characterized in that, The trapezoid is an isosceles trapezoid with a vertex angle ranging from 120° to 135°.

9. The hand injury rehabilitation training cup teaching aid according to claim 1, characterized in that, The top plate (1) has a downwardly extending protrusion on its side, and the base (3) has a groove that matches the edge of the top plate (1). The top plate (1) is detachably connected to the base (3) through the cooperation of the protrusion and the groove. The top and bottom edges of the side plate (2) are respectively provided with protrusions, and the corresponding positions of the top plate (1) and the base (3) are provided with grooves that are adapted to the protrusions. The side plate (2) is detachably connected to the top plate (1) and the base (3) through the cooperation of the protrusions and the grooves.

10. A two-handed coordinated rehabilitation training system, characterized in that, It includes two hand injury rehabilitation training cups as described in any one of claims 1 to 9, wherein the two teaching aids are mirror-symmetrical in structure.

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