An upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation

Abstract

The present invention proposes an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation, comprising: a rehabilitation training device bracket, two groups of training drive clamps are arranged on its side, support rings, support cotton blocks, and installation grooves are arranged in sequence inside the training drive clamps, the electrotherapy component in the groove is composed of a connecting plate, four groups of electrotherapy electrode plates and a ventilation groove, a movable support component movably connected to the support ring is installed at the bottom of the connecting plate, and a ventilation component is arranged in a circular array on its side, the movable support component can apply pressure to the electrode plate to prevent the middle of the electrode plate from bulging, ensuring that it fits the upper limb muscles, and at the same time, the electrode plate is movably connected to the clamp to avoid displacement of the electrode plate during rehabilitation training, ensuring accurate electrotherapy, the ventilation component cooperates with the cross-shaped ventilation groove, and drives airflow by the patient's upper limb movement to take away the heat of sweat, keep the skin dry, maintain the viscosity and fit of the electrode plate, and the rounded corner design of the cross-shaped ventilation groove optimizes airflow distribution and improves sweating and heat dissipation performance.

Description

Technical Field

[0001] The present invention relates to the technical field of rehabilitation training devices, and in particular to an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation. Background Art

[0002] When conducting rehabilitation training for the range of motion of the upper limb joints, electrotherapy is performed on the upper limb muscles to prevent disuse atrophy of the muscles due to limited mobility. Electric current stimulation is used to enhance muscle strength, promote local blood circulation to accelerate the repair of damaged tissues, reduce fatigue and soreness, and relieve possible muscle spasms. At the same time, it helps patients establish correct movement patterns, improve neuromuscular coordination, and ultimately improve the effectiveness of rehabilitation training, laying the foundation for restoring normal upper limb function.

[0003] In the Chinese patent application number 202122661616.1, an adjustable arm rehabilitation training device includes a main body support, and the main body support is symmetrically provided with a forearm support and a forearm support with the same structure. An electrotherapy box is provided in the main body support, and an electrotherapy device is provided in the electrotherapy box. An electrotherapy storage cover is provided on the electrotherapy box, and the electrotherapy device is connected to the electrode sheet through a wire. The main body support is connected to the forearm support through an adjustment reset piece, and the forearm support is connected to the forearm support through an adjustment reset piece; the utility model provides an auxiliary handle so that the patient can better and more conveniently perform rehabilitation training, and the auxiliary handle is connected to the forearm support through a thread, which is easy to disassemble and store; through the provided electrotherapy device, electrotherapy stimulation rehabilitation can be performed while arm rehabilitation training is carried out, which can increase the rehabilitation speed and rehabilitation effect; through the provided torsion spring and adjustment limit slot, the training intensity and strength required by the patient can be adjusted, so that it can be more adaptable to the requirements of rehabilitation training for arm injuries of different degrees.

[0004] Existing devices that use electrotherapy to perform rehabilitation training on patients' upper limbs usually use an adhesive method or a clamp and a strap to fix the electrode sheet on the patient's upper limb. If only the adhesive fixation method is used, the adhesion of the glue will be affected when the patient's skin sweats. As the patient's upper limb bends, the glued electrode sheet is prone to curling up at the sides or bulging in the middle, affecting the fit between the electrode sheet and the patient's upper limb. If the clamp and the strap are used to fix the electrode sheet on the patient's upper limb, when the clamp is used to carry the patient's upper limb for rehabilitation activities, due to the weakness of the patient's limb, the clamp can usually only move with the patient's upper limb due to its existing movement trend. At this time, the electrode sheet fixed on the inner wall of the clamp can only move with the clamp, which will produce a certain relative displacement between the clamp and the patient's upper limb, resulting in the problem of inaccurate fitting position. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art in that the electrode sheet is not sufficiently fitted to the patient's upper limb or there is an offset error in the fitting position. The present invention proposes an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is to include a rehabilitation training device bracket, and two groups of training driving clamps are symmetrically arranged on the sides of the rehabilitation training device bracket, and a support ring is installed inside the training driving clamp, and a support cotton block is fixedly connected to the inner wall of the support ring, and an installation groove is opened inside the support cotton block, and an electrotherapy component is arranged inside the installation groove, and the electrotherapy component includes a connecting plate, and four groups of electrotherapy electrode plates are evenly arranged on the top of the connecting plate, and a ventilation groove is arranged between every two groups of electrotherapy electrode plates, and a movable support component is installed at the bottom of the connecting plate, and the movable support component is located between the support ring and the electrotherapy component, and the movable support component is used to support the electrotherapy component, and the movable support component and the support ring are movably connected.

[0007] Preferably, four groups of ventilation components are arranged in a circular array on the side of the movable support component, and the ventilation component includes an air inlet nozzle, the top of the air inlet nozzle passes through the connecting piece, and the air inlet nozzle is connected to the ventilation groove, the bottom of the air inlet nozzle is fixedly connected to a flexible tube, and the bottom end of the flexible tube is fixedly connected to an upper telescopic tube, the bottom of the flexible tube is provided with upper air inlets at equal intervals, the outside of the upper telescopic tube is nested with a lower telescopic tube, and the top of the lower telescopic tube is provided with lower air inlets at equal intervals.

[0008] Preferably, when the lower telescopic cylinder and the upper telescopic cylinder are in a stretched state, the upper air inlet is aligned with the lower air inlet, and the airflow enters the internal cavity of the upper telescopic cylinder; when the lower telescopic cylinder and the upper telescopic cylinder are in a compressed state, the upper air inlet is staggered with the lower air inlet, and the airflow inside the upper telescopic cylinder flows to the ventilation groove through the air inlet nozzle.

[0009] Preferably, a mounting hole is opened inside the connecting piece, and the mounting holes are distributed at the bottom of the ventilation groove. The mounting hole is used for the top end of the air inlet nozzle to pass through the connecting piece, and the top end of the air inlet nozzle is fixedly connected to the connecting piece.

[0010] Preferably, the four corners of the electrotherapy electrode sheet are all provided with arc corners, and the bottom of the electrotherapy electrode sheet is electrically connected to a conducting wire.

[0011] Preferably, the movable support assembly includes a pressure-equalizing liquid bag, the top of the pressure-equalizing liquid bag is fixedly connected to the connecting piece, and the bottom of the pressure-equalizing liquid bag is fixedly connected to a supporting pressure plate.

[0012] Preferably, an upper spherical block is embedded in the interior of the support pressure plate, and the upper spherical block is rotatably connected to the support pressure plate. The bottom of the upper spherical block is fixedly connected to a support connecting rod, and the bottom end of the support connecting rod is fixedly connected to a lower support block. The lower support block is embedded in the inner wall of the support ring, and the lower support block is rotatably connected to the support ring.

[0013] Preferably, a spring is coaxially arranged inside the upper telescopic cylinder, the top end of the spring is fixedly connected to the upper telescopic cylinder, and the bottom end of the spring is fixedly connected to the lower telescopic cylinder.

[0014] Preferably, the upper telescopic cylinder is connected to the flexible cylinder and the air inlet nozzle, and the shape of the air inlet nozzle is set to be a trumpet shape that gradually shrinks from bottom to top.

[0015] Preferably, a displacement slider is fixedly connected to the bottom end of the lower telescopic cylinder, a displacement slot is provided on the inner wall of the support ring, and the displacement slider is slidably connected to the inside of the displacement slot.

[0016] Preferably, ventilation holes are provided on the sides of the displacement chute, and the ventilation holes pass through the interior of the support ring. The bottom of the training driving clamp is provided with air inlet holes corresponding to the ventilation holes.

[0017] Preferably, the top end of the training driving clamp is fixedly connected with a fixing strap, and the fixing strap is used to fix the user's upper limbs.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention is provided with a movable support component, which is located between the clamp and the electrode plate bracket to provide pressure on the electrode plate, pressing the electrode plate on the patient's upper limb, which can effectively prevent the middle position of the electrode plate from bulging upward, thereby ensuring the fit between the electrode plate and the patient's upper limb muscles. At the same time, the movable support component makes the electrode plate and the clamp movably connected. During rehabilitation training activities, the electrode plate and the patient's upper limb are kept relatively fixed, avoiding relative displacement of the electrode plate and the patient's upper limb as the clamp moves, ensuring the accurate position of the electrode plate during electrotherapy, and making the electrical stimulation stably act on the target muscle, thereby improving the stability of the treatment effect.

[0020] 2. The present invention is provided with a ventilation component, which cooperates with the cross-shaped ventilation groove inside the electrode piece. The patient's upper limb movement is used to drive the airflow into the ventilation groove, quickly taking away sweat vapor and skin heat, lowering the skin temperature, and relieving the stuffiness and stickiness. The airflow is introduced to keep the skin dry, avoid sweat diluting the viscosity of the adhesive, reduce the phenomenon of electrode piece falling off or shifting, prevent the patient's sweating from causing the electrode piece to tilt, and maintain the fit between the electrode piece and the skin. At the same time, the cross-shaped exhaust channel is combined with the rounded corner design to optimize the airflow distribution, reduce the airflow resistance, avoid airflow dead zones, make the airflow pass evenly and efficiently, quickly discharge the sweat and heat near the electrode piece, and further improve the sweating and heat dissipation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The disclosure of the present invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0022] Figure 1 A schematic diagram of the structure of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to one embodiment of the present invention is shown;

[0023] Figure 2 Schematically shows the structure of the interior of a support ring of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to one embodiment of the present invention;

[0024] Figure 3 Schematically showing a cross-sectional structural diagram of the interior of an installation groove of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to one embodiment of the present invention;

[0025] Figure 4 Schematically shows a schematic diagram of a partial top view of an electrotherapy component, a movable support component, and a ventilation component of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to one embodiment of the present invention;

[0026] Figure 5 Schematically showing a schematic diagram of the structure of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation, including an electrotherapy component, a movable support component, and a ventilation component, viewed from above;

[0027] Figure 6 Schematically showing a cross-sectional structural diagram of an active support component of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to one embodiment of the present invention;

[0028] Figure 7Schematically shows the structure of the electrotherapy component of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to one embodiment of the present invention;

[0029] Figure 8 Schematically showing a cross-sectional structural diagram of a ventilation component of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to one embodiment of the present invention, in which the upper air inlet and the lower air inlet are staggered;

[0030] Figure 9 A schematic cross-sectional view of the upper air inlet and the lower air inlet of a ventilation assembly of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to one embodiment of the present invention is shown;

[0031] Figure 10 The figure schematically shows a cross-sectional structural diagram of a support cotton block and an installation groove portion of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to one embodiment of the present invention.

[0032] In the figure: 1. Rehabilitation training device bracket; 2. Training drive clamp; 3. Support ring; 4. Electrotherapy component; 5. Movable support component; 6. Ventilation component; 7. Support cotton block; 8. Mounting groove; 9. Ventilation hole; 10. Fixing strap; 401. Connecting piece; 402. Electrotherapy electrode piece; 403. Ventilation groove; 404. Arc angle; 405. Mounting hole; 406. Electric wire; 501. Pressure equalizing liquid bag; 502. Support pressure plate; 503. Upper spherical block; 504. Support connecting rod; 505. Lower support block; 601. Air inlet nozzle; 602. Flexible tube; 603. Upper telescopic tube; 604. Upper air inlet; 605. Lower telescopic tube; 606. Lower air inlet; 607. Spring; 608. Displacement slider; 609. Displacement slide. DETAILED DESCRIPTION

[0033] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention and should not be regarded as the entire invention or as a limitation or restriction of the technical solution of the present invention.

[0034] According to one embodiment of the present invention, Figures 1 to 10A rehabilitation training device for upper limb joint range of motion based on electrotherapy stimulation includes a rehabilitation training device bracket 1. Two sets of training driving clamps 2 are symmetrically arranged on the sides of the rehabilitation training device bracket 1. The training driving clamps 2 are used to move the patient's upper limbs to assist them in rehabilitation training. A support ring 3 is installed inside the training driving clamp 2. A support cotton block 7 is fixedly connected to the inner wall of the support ring 3. The support cotton block 7 is attached to the inner wall of the support ring 3 and is used to support and protect the patient's upper limbs. The soft support cotton block 7 is convenient for improving the patient's comfort. An installation groove 8 is opened inside the support cotton block 7. The installation groove 8 is used to install the electrotherapy mechanism. During rehabilitation training, the patient places the upper limb training driving clamp 2 inside the support cotton block 7 to support it. At the same time, a fixing strap 10 fixedly connected to the top of the training driving clamp 2 is used to fix the user's upper limb.

[0035] When upper limb joint injuries or diseases lead to limited mobility, muscles will atrophy due to disuse due to lack of normal exercise stimulation. Therefore, electrotherapy is needed to stimulate the muscles with electric current, which can cause muscle contraction and simulate normal muscle movement, thereby maintaining muscle tension and volume and reducing the occurrence of muscle atrophy. Therefore, the present invention is provided with an electrotherapy component 4 inside the mounting groove 8, which is used to assist with electrotherapy while the training clamp 2 drives the patient's upper limbs for rehabilitation training, so as to help the patient's muscles recover.

[0036] The electrotherapy component 4 includes a connecting piece 401, and four groups of electrotherapy electrode pieces 402 are evenly arranged on the top of the connecting piece 401, and a ventilation groove 403 is arranged between every two groups of electrotherapy electrode pieces 402. The present invention divides the traditional whole electrode piece into four groups of small electrotherapy electrode pieces 402, and the bottom of each group of electrotherapy electrode pieces 402 is electrically connected to a power line 406 for separate power supply. The flexible connecting piece 401 connects them together to form a whole. Compared with the traditional whole electrode piece, after being divided into four small pieces, the four electrotherapy electrode pieces 402 are easier to bend and can better adapt to the complex curves and contours of the upper limb joints. Each small piece can fit the body part more flexibly, thereby improving the fit with the skin, making the electrical stimulation act more evenly on the muscles, enhancing the treatment effect, reducing the movement restriction caused by stiff or non-fitting electrode pieces, better cooperating with the rehabilitation training process, and improving the convenience and effect of training.

[0037] The side of the electrode sheet that contacts the patient's upper limb is fixed to the patient's skin by gluing. When peeling off, it is easy to cause pain to the patient's skin due to tearing. The four small electrode sheets of the present invention can be peeled off one by one, and the large force that was originally used to peel off the entire electrode sheet at one time is dispersed into multiple operations. Each time a small sheet is peeled off, the force is relatively small, and the skin has more time to adapt to and withstand this change, and it is not easy to cause a strong pain reaction. In order to further reduce the pain, the four corners of the electrotherapy electrode sheet 402 of the present invention are provided with arc corners 404. The rounded corner design makes the force evenly distributed on the edge of the small electrode sheet, and there will be no situation where the force is concentrated at a certain point or a certain edge, further reducing damage and pain to the skin.

[0038] In a traditional physiotherapy device that integrates a driving clamp and an electrode sheet, the electrode sheet is usually directly fixed inside the driving clamp and moves completely with the driving clamp. However, the movement of the patient's upper limb has a certain lag, which leads to a certain displacement between the electrode sheet and the position where the patient needs to undergo electrotherapy during the rehabilitation exercise, resulting in the problem of inaccurate electrotherapy position. In order to solve this problem, the present invention is provided with a movable support component 5, through which the electrode sheet and the support ring 3 are movably connected, and a force can be provided to the electrode sheet from the back to press the electrode sheet against the patient's upper limb.

[0039] A movable support assembly 5 is installed at the bottom of the connecting piece 401. The movable support assembly 5 is located between the support ring 3 and the electrotherapy assembly 4, and is used to support the electrotherapy assembly 4. The movable support assembly 5 and the support ring 3 are movably connected. The movable support assembly 5 includes a pressure-equalizing liquid capsule 501. The top of the pressure-equalizing liquid capsule 501 is fixedly connected to the connecting piece 401, and the bottom of the pressure-equalizing liquid capsule 501 is fixedly connected to a support pressure plate 502. The interior of the support pressure plate 502 is embedded with an upper spherical block 503, and the upper spherical block 503 is rotatably connected to the support pressure plate 502. The bottom of the upper spherical block 503 is fixedly connected to a support connecting rod 504, and the bottom end of the support connecting rod 504 is fixedly connected to a lower support block 505. The lower support block 505 is embedded in the inner wall of the support ring 3, and the lower support block 505 is rotatably connected to the support ring 3.

[0040] When the fixing strap 10 and the support ring 3 cooperate with each other to tighten, the support link 504 and the support pressure plate 502 will provide an upward force to the electrode sheet from the back of the electrode sheet, pressing the electrode sheet on the patient's upper limb, and the electrode sheet and the patient's skin are connected by adhesive. Compared with the traditional connection method of only adhesive, this pressing force can effectively prevent the middle part of the electrode sheet from tilting upward when the adhesive is not tight after the patient's skin sweats, thereby ensuring the fit between the electrode sheet and the patient's upper limb. At the same time, the pressure equalizing liquid capsule 501 located between the support pressure plate 502 and the connecting piece 401 is in a closed state and is filled with liquid. When the support pressure plate 502 applies pressure to the pressure equalizing liquid capsule 501, the liquid in the pressure equalizing liquid capsule 501 will redistribute the pressure, and this pressure will be evenly transmitted to every liquid in the pressure equalizing liquid capsule 501, and then evenly act on the electrode sheet. In this way, it can be ensured that when the electrode sheet fits the patient's skin, the pressure on each part is relatively balanced, thereby improving the patient's comfort and the effect of electrical stimulation.

[0041] At the same time, the two ends of the supporting connecting rod 504 are provided with a spherical block 503 on the ball head and a lower supporting block 505, so that the electrode sheet supported on the top and the supporting ring 3 at the bottom are movably connected, so that the supporting ring 3 can only provide pressure to press the electrode sheet on the patient's upper limb, but will not cause relative displacement between the electrode sheet and the patient's upper limb while driving the clamp 2 to move during training, so that the electrode sheet still moves with the patient's upper limb and is relatively fixed with the patient's upper limb. During the electrotherapy process, accurately stimulating the target muscle group is the key to the treatment effect. The relative fixation between the position of the electrode sheet and the patient's upper limb can ensure that the current acts accurately on the specific muscles that need rehabilitation training, avoids stimulation of irrelevant muscles due to displacement of the electrode sheet, and improves the pertinence and effectiveness of electrotherapy.

[0042] Although ventilation grooves 403 are provided between each set of electrotherapy electrode pads 402, providing a certain drainage channel for sweat and, to a certain extent, alleviating the feeling of stuffiness and dampness on the skin surface, when the patient sweats, the sweat can diffuse through the ventilation grooves 403, reducing the accumulation of sweat between the skin and the electrode pads. However, during actual use, the airflow around them is almost static, lacking air flow to accelerate the evaporation of sweat and remove heat, which limits the sweat drainage effect of the ventilation grooves 403. Sweat may remain in the ventilation grooves 403 for a long time and cannot be promptly removed by dry air, resulting in low sweat drainage efficiency. The skin may still feel sticky and greasy, affecting patient comfort. Moreover, with increasing use time, due to poor sweat drainage, the sweat accumulated between the electrode pads and the skin gradually dilutes the viscosity of the adhesive, reducing the fit of the electrode pads. In addition, skin becomes soft when exposed to moisture for a long time, which can easily lead to gaps between the electrode pads and the skin, further affecting the fit of the electrode pads to the patient's upper limbs. To address this problem, the present invention is provided with a ventilation assembly 6.

[0043] The ventilation assembly 6 is arranged in a circular array on the side of the movable support assembly 5, and the ventilation assembly 6 includes an air inlet nozzle 601, the top of the air inlet nozzle 601 passes through the connecting piece 401, and the air inlet nozzle 601 is communicated with the ventilation groove 403, the bottom of the air inlet nozzle 601 is fixedly connected to the flexible tube 602, and the bottom end of the flexible tube 602 is fixedly connected to the upper telescopic tube 603, the bottom of the flexible tube 602 is evenly spaced with upper air inlets 604, the outer side of the upper telescopic tube 603 is nested with a lower telescopic tube 605, and the top of the lower telescopic tube 605 is evenly spaced with lower air inlets 606. When the lower telescopic tube 605 and the upper telescopic tube 603 are in a stretched state, the upper air inlet 604 is aligned with the lower air inlet 606, and the airflow enters the internal cavity of the upper telescopic tube 603. 3 is in a compressed state, the upper air inlet 604 is staggered with the lower air inlet 606, and the air flow inside the upper telescopic cylinder 603 flows to the ventilation groove 403 through the air inlet nozzle 601. The interior of the connecting piece 401 is provided with a mounting hole 405, and the mounting holes 405 are distributed at the bottom of the ventilation groove 403. The mounting hole 405 is used for the top end of the air inlet nozzle 601 to pass through the connecting piece 401, and the top end of the air inlet nozzle 601 is fixedly connected to the connecting piece 401. The upper telescopic cylinder 603 is connected to the flexible cylinder 602 and the air inlet nozzle 601. The shape of the air inlet nozzle 601 is set to be a trumpet shape that gradually shrinks from bottom to top. The side of the displacement slide groove 609 is provided with a ventilation hole 9, which passes through the interior of the support ring 3. The bottom of the training driving clamp 2 is provided with an air inlet hole corresponding to the ventilation hole 9.

[0044] As the patient's upper limbs continue to bend and move, the upper telescopic cylinder 603 and the lower telescopic cylinder 605 in each group of ventilation components 6 are also continuously stretched and compressed. During each compression process, air can be passed into the interior of the ventilation groove 403. When the airflow passes through the ventilation groove 403, it can quickly take away the water vapor formed by the evaporation of sweat, so that the skin surface remains relatively dry, reducing the stickiness and discomfort caused by sweat accumulation, and improving the patient's comfort when using the electrode patch. At the same time, the airflow can effectively take away the heat on the skin surface, lower the skin temperature, and avoid the stuffy feeling caused by long-term use of the electrode patch. Especially in summer or when the patient's own metabolism is high, the heat dissipation effect is more obvious, and the introduction of airflow helps to maintain the dryness of the skin surface, prevent sweat from diluting and eroding the electrode patch adhesive, thereby maintaining the viscosity of the adhesive, allowing the electrode patch to better fit on the skin, reducing the phenomenon of electrode patch falling off or shifting due to sweating, ensuring the fit between the electrode patch and the patient's upper limb, and thus ensuring the stability and effectiveness of the electrotherapy process.

[0045] The ventilation groove 403 is cross-shaped, and the mounting hole 405 is located in the middle section. However, when the airflow enters the ventilation groove 403 through the top of the air inlet nozzle 601, the cross-shaped structure allows the airflow to flow more evenly from the air inlet in the middle section to the four ends, achieving airflow coverage over a large area. The ends and the middle connection of this cross-shaped ventilation groove 403 are rounded under the action of the arc angle 404, which can prevent the airflow from forming sharp corners at these locations, reduce the generation of airflow turbulence and eddy currents, and make the airflow flow more smoothly along the channel, thereby being more evenly distributed throughout the exhaust area, improving the uniformity of exhaust. At the same time, the rounded corner treatment can smooth the airflow path, reduce the friction and collision between the airflow and the channel wall, and reduce the resistance of the airflow flowing in the channel. This means that under the same intake pressure, the cross-shaped exhaust channel ventilation groove 403 with rounded corners can allow the airflow to pass more efficiently, improve the exhaust efficiency, and help to discharge sweat and heat near the electrode sheet more quickly.

[0046] A spring 607 is coaxially arranged inside the upper telescopic cylinder 603, and the top end of the spring 607 is fixedly connected to the upper telescopic cylinder 603, and the bottom end of the spring 607 is fixedly connected to the lower telescopic cylinder 605. The ventilation component 6 is located at the bottom of the flexible cylinder 602, and cooperates with the support link 504 to provide support for the support link 504. The bottom end of the lower telescopic cylinder 605 is fixedly connected to a displacement slider 608, and the inner wall of the support ring 3 is provided with a displacement slot 609. The displacement slider 608 is slidably connected to the inside of the displacement slot 609. By providing the displacement slider 608 and the displacement slot 609, a sliding structure is formed between the bottom end of the lower telescopic cylinder 605 and the support ring 3, and the circular displacement slot 609 will not limit the sliding direction of the displacement slider 608, so that the existence of the ventilation component 6 will not affect the movable connection between the electrode sheet and the support ring 3.

[0047] The technical scope of the present invention is not limited to the contents of the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. An upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation, characterized in that: The device comprises a rehabilitation training device bracket, two groups of training driving clamps are symmetrically arranged on the sides of the rehabilitation training device bracket, a support ring is installed inside the training driving clamp, a support cotton block is fixedly connected to the inner wall of the support ring, a mounting groove is opened inside the support cotton block, an electrotherapy component is arranged inside the mounting groove, the electrotherapy component comprises a connecting piece, four groups of electrotherapy electrode sheets are evenly arranged on the top of the connecting piece, and a ventilation groove is arranged between every two groups of electrotherapy electrode sheets, a movable support component is installed at the bottom of the connecting piece, the movable support component is located between the support ring and the electrotherapy component, and the movable support component is used to support the electrotherapy component, and the movable support component and the support ring are movably connected; The movable support assembly includes a pressure-equalizing liquid capsule, the top of the pressure-equalizing liquid capsule is fixedly connected to the connecting piece, the bottom of the pressure-equalizing liquid capsule is fixedly connected to a support pressure plate, an upper spherical block is embedded in the interior of the support pressure plate, and the upper spherical block and the support pressure plate are rotatably connected, the bottom of the upper spherical block is fixedly connected to a support connecting rod, and the bottom end of the support connecting rod is fixedly connected to a lower support block, the lower support block is embedded in the inner wall of the support ring, and the lower support block and the support ring are rotatably connected; Four groups of ventilation components are arranged in a circular array on the side of the movable support component, and the ventilation component includes an air inlet nozzle, the top of the air inlet nozzle passes through the connecting piece, and the air inlet nozzle is connected to the ventilation groove, the bottom of the air inlet nozzle is fixedly connected to a flexible tube, and the bottom end of the flexible tube is fixedly connected to an upper telescopic tube, the bottom of the flexible tube is evenly spaced with upper air inlets, the outside of the upper telescopic tube is nested with a lower telescopic tube, and the top of the lower telescopic tube is evenly spaced with lower air inlets; When the lower telescopic cylinder and the upper telescopic cylinder are in a stretched state, the upper air inlet is aligned with the lower air inlet, and the airflow enters the internal cavity of the upper telescopic cylinder. When the lower telescopic cylinder and the upper telescopic cylinder are in a compressed state, the upper air inlet is staggered with the lower air inlet, and the airflow inside the upper telescopic cylinder flows to the ventilation groove through the air inlet nozzle.

2. The upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to claim 1, characterized in that: The connecting piece is provided with mounting holes inside, and the mounting holes are distributed at the bottom of the ventilation groove. The mounting holes are used for the top end of the air inlet nozzle to pass through the connecting piece, and the top end of the air inlet nozzle is fixedly connected to the connecting piece.

3. The upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to claim 1, characterized in that: The four corners of the electrotherapy electrode sheet are all provided with arc corners, and the bottom of the electrotherapy electrode sheet is electrically connected to a conducting wire.

4. The upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to claim 1, characterized in that: A spring is coaxially arranged inside the upper telescopic cylinder. The top end of the spring is fixedly connected to the upper telescopic cylinder, and the bottom end of the spring is fixedly connected to the lower telescopic cylinder.

5. The upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to claim 1, characterized in that: The upper telescopic cylinder is connected to the flexible cylinder and the air inlet nozzle, and the shape of the air inlet nozzle is set to be a trumpet shape that gradually shrinks from bottom to top.

6. The upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to claim 1, characterized in that: The bottom end of the lower telescopic cylinder is fixedly connected with a displacement sliding block, the inner wall of the support ring is provided with a displacement sliding groove, and the displacement sliding block is slidably connected to the interior of the displacement sliding groove.

7. The upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to claim 6, characterized in that: A ventilation hole is provided on the side of the displacement slide, and the ventilation hole passes through the interior of the support ring. An air inlet hole corresponding to the ventilation hole is opened at the bottom of the training driving clamp.

8. The upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to claim 1, characterized in that: The top end of the training driving clamp is fixedly connected with a fixing strap, and the fixing strap is used to fix the user's upper limbs.

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