Upper limb joint motion range rehabilitation training device based on electrotherapy stimulation

Abstract

The invention provides an upper limb joint motion range rehabilitation training device based on electrotherapy stimulation, which comprises a rehabilitation training device support, two groups of training driving clamps are arranged on the side of the rehabilitation training device support, a support ring, a support cotton block and a mounting groove are sequentially arranged in each training driving clamp, and an electrotherapy assembly in each groove is composed of a connecting piece, four groups of electrotherapy electrode plates and a vent groove. A movable supporting assembly movably connected with the supporting ring is installed at the bottom of the connecting piece, ventilation assemblies are arranged on the side of the connecting piece in an annular array mode, the movable supporting assembly can apply pressure to the electrode slice, the middle of the electrode slice is prevented from bulging, it is guaranteed that the electrode slice is attached to upper limb muscles, meanwhile, the electrode slice is movably connected with the clamp, electrode slice displacement during rehabilitation training is avoided, and electrotherapy accuracy is guaranteed. The ventilation assembly is matched with the cross-shaped ventilation groove, airflow is driven through movement of the upper limbs of the patient, sweat heat is taken away, the skin is kept dry, the viscidity and the fitting degree of the electrode plates are maintained, airflow distribution is optimized through the round corner design of the cross-shaped ventilation groove, and the perspiration and heat dissipation performance is improved.

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 and improve neuromuscular coordination, ultimately improving the effectiveness of rehabilitation training and 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 of the same structure, an electrotherapy box is provided in the main body support, an electrotherapy device is provided in the electrotherapy box, and an electrotherapy storage cover is provided on the electrotherapy box, 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 electrotherapy device, electrotherapy stimulation rehabilitation can be performed while arm rehabilitation training, which can increase the rehabilitation speed and rehabilitation effect; through the torsion spring and the adjustment limit slot, the training intensity and strength required by the patient can be adjusted, so that the requirements of rehabilitation training for arm injuries of different degrees can be met, and it is more adaptable.

[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 cooperate with each other 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. In the method of using a clamp and a strap to cooperate with each other 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 the 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 defect in the prior art that the degree of fit between the electrode sheet and the patient's upper limb is insufficient 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] To solve the above technical problems, the technical solution adopted by the present invention is to include a rehabilitation training device bracket. Two groups of training driving clamps are symmetrically arranged on the side 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. An installation groove is opened inside the support cotton block. An electrotherapy component is arranged inside the installation groove. The electrotherapy component includes a connecting piece. Four groups of electrotherapy electrode sheets are evenly arranged on the top of the connecting piece. An air vent groove is arranged between every two groups of electrotherapy electrode sheets. An activity support component is installed at the bottom of the connecting piece. The activity support component is located between the support ring and the electrotherapy component and is used to support the electrotherapy component. The activity support component is movably connected to the support ring.

[0007] Preferably, four groups of ventilation components are arranged in a circular array on the side of the activity support component. The ventilation component includes an air inlet nozzle. The top end of the air inlet nozzle penetrates through the connecting piece and is communicated with the air vent groove. The bottom of the air inlet nozzle is fixedly connected with a flexible cylinder. The bottom end of the flexible cylinder is fixedly connected with an upper telescopic cylinder. Upper air inlets are evenly opened at the bottom of the flexible cylinder. A lower telescopic cylinder is nested outside the upper telescopic cylinder. Lower air inlets are evenly opened at the top of the lower telescopic cylinder.

[0008] Preferably, when the lower telescopic cylinder and the upper telescopic cylinder are in a stretched state, the upper air inlets are aligned with the lower air inlets, and air flows into the inner cavity of the upper telescopic cylinder. When the lower telescopic cylinder and the upper telescopic cylinder are in a compressed state, the upper air inlets are staggered from the lower air inlets, and the air flow inside the upper telescopic cylinder flows to the air vent groove through the air inlet nozzle.

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

[0010] Preferably, arc corners are arranged at the four corners of the electrotherapy electrode sheet. A power line is electrically connected to the bottom of the electrotherapy electrode sheet.

[0011] Preferably, the activity support component includes a pressure equalizing liquid bag. The top of the pressure equalizing liquid bag is fixedly connected to the connecting piece. The bottom of the pressure equalizing liquid bag is fixedly connected to a support pressing plate.

[0012] Preferably, an upper spherical block is embedded inside the support pressing plate, and the upper spherical block is rotatably connected to the support pressing plate. A support connecting rod is fixedly connected to the bottom of the upper spherical block, and a lower support block is fixedly connected to the bottom end of the support connecting rod. The lower support block is embedded in the inner wall of the support ring and 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 communicated with both the flexible cylinder and the air inlet nozzle. The air inlet nozzle is shaped like a horn that gradually narrows from bottom to top.

[0015] Preferably, a displacement slider is fixedly connected to the bottom end of the lower telescopic cylinder. A displacement sliding groove is formed in the inner wall of the support ring, and the displacement slider is slidably connected inside the displacement sliding groove.

[0016] Preferably, a ventilation hole is arranged on the side of the displacement sliding groove. The ventilation hole penetrates through the inside of the support ring, and an air inlet hole corresponding to the ventilation hole is formed in the bottom of the training driving fixture.

[0017] Preferably, a fixed strap is fixedly connected to the top end of the training driving fixture, and the fixed strap is used to fix the upper limb of the user.

[0018] Compared with the prior art, the beneficial effects of the present invention include: 1. By providing a movable support assembly located between the fixture and the electrode plate bracket, the present invention provides pressure to the electrode plate, presses the electrode plate on the upper limb of the patient, can effectively prevent the middle position from bulging upward, is convenient for ensuring the adhesion between the electrode plate and the upper limb muscle of the patient. At the same time, the movable support assembly makes the electrode plate and the fixture be movably connected. During the rehabilitation training activity, the electrode plate and the upper limb of the patient are kept relatively fixed, avoiding the relative displacement between the electrode plate and the upper limb of the patient caused by the movement of the driving fixture, ensuring the accurate position of the electrode plate during the electrotherapy process, enabling the electric stimulation to stably act on the target muscle, and improving the stability of the treatment effect.

[0019] 2. The present invention is provided with a ventilation component, which cooperates with the cross-shaped ventilation groove inside the electrode patch. By driving the airflow into the ventilation groove through the movement of the patient's upper limb, the sweat vapor and skin heat can be quickly carried away, reducing the skin temperature, alleviating the stuffy and sticky feelings, keeping the skin dry by the airflow introduction, avoiding the dilution of the adhesive by sweat, reducing the phenomenon of electrode patch detachment or displacement, preventing the electrode patch from tilting due to the patient's sweating, maintaining the adhesion between the electrode patch and the skin. At the same time, the cross-shaped exhaust channel and the rounded corner design optimize the airflow distribution, reduce the airflow resistance, avoid the airflow dead zone, enable the airflow to pass through evenly and efficiently, and quickly discharge the sweat and heat near the electrode patch, further improving the sweating and heat dissipation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The disclosure of the present invention will be described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings, the same reference numerals are used to refer to the same components. Among them: Figure 1 Schematically shows a structural diagram of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to an embodiment of the present invention; Figure 2 Schematically shows a structural diagram inside the support ring of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to an embodiment of the present invention; Figure 3 Schematically shows a sectional structural diagram inside the installation groove of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to an embodiment of the present invention; Figure 4 Schematically shows a top view structural diagram of the electrotherapy component, movable support component, and ventilation component of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to an embodiment of the present invention; Figure 5 Schematically shows a bottom view structural diagram of the electrotherapy component, movable support component, and ventilation component of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to an embodiment of the present invention; Figure 6 Schematically shows a sectional structural diagram of the movable support component part of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to an embodiment of the present invention; Figure 7 Schematically shows a structural diagram of the electrotherapy component part of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to an embodiment of the present invention; Figure 8Schematically shows a cross-sectional structural diagram of the staggered state of the upper air inlet and the lower air inlet of the ventilation component part of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to an embodiment of the present invention; Figure 9 Schematically shows a cross-sectional structural diagram of the aligned state of the upper air inlet and the lower air inlet of the ventilation component part of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to an embodiment of the present invention; Figure 10 Schematically shows a cross-sectional structural diagram of the support cotton block and the installation groove part of an upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to an embodiment of the present invention.

[0021] 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. Installation groove; 9. Ventilation hole; 10. Fixed strap; 401. Connecting piece; 402. Electrotherapy electrode sheet; 403. Ventilation groove; 404. Arc angle; 405. Installation hole; 406. Power line; 501. Equalizing liquid sac; 502. Support pressing plate; 503. Upper spherical block; 504. Support connecting rod; 505. Lower support block; 601. Air inlet nozzle; 602. Flexible cylinder; 603. Upper telescopic cylinder; 604. Upper air inlet; 605. Lower telescopic cylinder; 606. Lower air inlet; 607. Spring; 608. Displacement slider; 609. Displacement chute. Specific embodiments

[0022] It is easy to understand that according to the technical solution of the present invention, without changing the essence of the present invention, those of ordinary skill in the art can propose various structural ways and implementation ways that can be mutually replaced. Therefore, the following specific embodiments and the drawings are only illustrative descriptions of the technical solution of the present invention, and should not be regarded as all of the present invention or as a limitation or restriction on the technical solution of the present invention.

[0023] According to an embodiment of the present invention in combination with Figures 1 to 10Shown. An upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation, including a rehabilitation training device bracket 1. Two groups of training drive clamps 2 are symmetrically arranged on the side of the rehabilitation training device bracket 1. The training drive clamps 2 are used to drive the upper limb of the patient to move and assist in their rehabilitation training. A support ring 3 is installed inside the training drive clamp 2. A support cotton block 7 is fixedly connected to the inner wall of the support ring 3. The support cotton block 7 adheres to the inner wall of the support ring 3 and is used to support and protect the upper limb of the patient. The soft support cotton block 7 is convenient for improving the comfort of the patient. An installation groove 8 is opened inside the support cotton block 7. The installation groove 8 is used to install the electrotherapy mechanism part. During the rehabilitation training, the patient puts the upper limb into the training drive clamp 2, and the support cotton block 7 supports it. At the same time, a fixed strap 10 fixedly connected to the top of the training drive clamp 2 is used to fix the upper limb of the user.

[0024] After the range of motion of the upper limb joint is limited due to injury or disease, the muscles will show disuse atrophy due to lack of normal movement stimulation. Therefore, it is necessary to use electrotherapy to stimulate the muscles with current, which can cause muscle contraction, simulate normal muscle movement, so as to maintain the muscle tension and volume and reduce the occurrence of muscle atrophy. Therefore, an electrotherapy component 4 is arranged inside the installation groove 8 of the present invention, which is used to assist electrotherapy while the training drive clamp 2 drives the upper limb of the patient to carry out rehabilitation training and help the muscles of the patient to recover.

[0025] The electrotherapy component 4 includes a connecting piece 401. Four groups of electrotherapy electrode sheets 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 sheets 402. In the present invention, the traditional whole electrode sheet is divided into four small electrotherapy electrode sheets 402. And the bottom of each group of electrotherapy electrode sheets 402 is electrically connected to a power line 406 for individual power supply. The flexible connecting piece 401 connects them together to form a whole. Compared with the form of the traditional whole electrode sheet, after being divided into four small pieces, it is easier to bend between the four electrotherapy electrode sheets 402, and can better adapt to the complex curved surface and contour of the upper limb joint. Each small piece can fit the body part more flexibly, so as to improve the fit with the skin, make the electrical stimulation act on the muscles more evenly, enhance the treatment effect, reduce the movement limitation caused by the stiffness or non-fitting of the electrode sheet, and better cooperate with the rehabilitation training process to improve the convenience and effect of training.

[0026] The side of the electrode patch that contacts the patient's upper limb is fixed to the patient's skin by means of adhesion. When it is peeled off, it is likely to cause pain to the patient's skin due to tearing. However, the four small electrode patches of the present invention can be peeled off one by one, dispersing the relatively large force required to peel off the entire electrode patch at once into multiple operations. When peeling off one small patch at a time, the force is relatively small, and the skin has more time to adapt to and withstand this change, making it less likely to cause a strong pain response. Moreover, to further reduce the pain, the present invention is provided with arc corners 404 at the four corners of the electrotherapy electrode patch 402. The rounded corner design enables the force to be evenly distributed at the edge of the small electrode patch, preventing the force from concentrating at a certain point or on a certain edge, and further reducing the harm and pain to the skin.

[0027] In a traditional physical therapy device with an integrated drive clamp and electrode patch, the electrode patch is usually directly fixed inside the drive clamp and moves completely along with the drive clamp. However, the movement of the patient's upper limb has a certain lag, which results in a certain displacement between the electrode patch and the position on the patient's upper limb where electrotherapy is required during the rehabilitation exercise, causing the problem of inaccurate electrotherapy position. To solve this problem, the present invention is provided with a movable support assembly 5. Through the movable support assembly 5, the electrode patch is movably connected to the support ring 3, and a force can be provided from the back to press the electrode patch against the patient's upper limb.

[0028] 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 the movable support assembly 5 is used to support the electrotherapy assembly 4. The movable support assembly 5 is movably connected to the support ring 3. The movable support assembly 5 includes a pressure equalizing liquid sac 501. The top of the pressure equalizing liquid sac 501 is fixedly connected to the connecting piece 401. The bottom of the pressure equalizing liquid sac 501 is fixedly connected to a support pressing plate 502. An upper spherical block 503 is embedded in the support pressing plate 502, and the upper spherical block 503 is rotatably connected to the support pressing 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.

[0029] When the fixing strap 10 and the supporting ring 3 cooperate with each other to tighten, the supporting connecting rod 504 and the supporting pressing plate 502 will provide an upward force for the electrode sheet from the back of the electrode sheet, pressing the electrode sheet onto the patient's upper limb, and the electrode sheet is connected to the patient's skin by adhesive. Compared with the traditional connection only by 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 supporting pressing plate 502 and the connecting plate 401 is in a closed state and is filled with liquid. When the supporting pressing 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.

[0030] 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 is movably connected with the supporting ring 3 at the bottom, 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.

[0031] Although ventilation grooves 403 are provided between each group of electrotherapy electrode sheets 402, a certain discharge channel is provided for sweat, which can alleviate the stuffiness and dampness of the skin surface to a certain extent. When the patient sweats, the sweat can be diffused through the ventilation grooves 403 to reduce the accumulation of sweat between the skin and the electrode sheets, but in actual use, the air flow around it is almost in a static state, lacking the flow of air to accelerate the evaporation of sweat and take away heat, and the sweat discharge effect of the ventilation grooves 403 will be limited. Sweat may stay in the ventilation grooves 403 for a long time and cannot be taken away by dry air in time, resulting in low sweat discharge efficiency, and the skin may still have a sticky feeling, affecting the patient's comfort, and with the increase of the use time, due to poor sweat discharge, the sweat accumulated between the electrode sheet and the skin will gradually dilute the viscosity of the adhesive, so that the fit of the electrode sheet decreases. In addition, the skin will become soft when it is in a humid environment for a long time, and it is also easy to cause a gap between the electrode sheet and the skin, further affecting the fit between the electrode sheet and the patient's upper limbs. In order to solve this problem, the present invention is provided with a ventilation component 6.

[0032] The ventilation assembly 6 is arranged in an annular array on the side of the movable support assembly 5. The ventilation assembly 6 includes an air inlet nozzle 601. The top end of the air inlet nozzle 601 penetrates through the connecting piece 401 and is communicated with the ventilation groove 403. The bottom of the air inlet nozzle 601 is fixedly connected with a flexible cylinder 602, and the bottom end of the flexible cylinder 602 is fixedly connected with an upper telescopic cylinder 603. The bottom of the flexible cylinder 602 is equidistantly provided with upper air inlets 604. The outside of the upper telescopic cylinder 603 is nested with a lower telescopic cylinder 605. The top of the lower telescopic cylinder 605 is equidistantly provided with lower air inlets 606. When the lower telescopic cylinder 605 and the upper telescopic cylinder 603 are in a stretched state, the upper air inlets 604 are aligned with the lower air inlets 606, and the air flow enters the internal cavity of the upper telescopic cylinder 603. When the lower telescopic cylinder 605 and the upper telescopic cylinder 603 are in a compressed state, the upper air inlets 604 are staggered from the lower air inlets 606, and the air flow inside the upper telescopic cylinder 603 flows to the ventilation groove 403 through the air inlet nozzle 601. Installation holes 405 are formed inside the connecting piece 401, and the installation holes 405 are distributed at the bottom of the ventilation groove 403. The installation holes 405 are used for the top end of the air inlet nozzle 601 to penetrate through the connecting piece 401, and the top end of the air inlet nozzle 601 is fixedly connected with the connecting piece 401. The upper telescopic cylinder 603 is communicated with both the flexible cylinder 602 and the air inlet nozzle 601. The shape of the air inlet nozzle 601 is set as a horn shape that gradually narrows from bottom to top. Ventilation holes 9 are arranged on the side of the displacement sliding groove 609. The ventilation holes 9 penetrate through the inside of the support ring 3. An air inlet hole corresponding to the ventilation holes 9 is formed at the bottom of the training driving clamp 2.

[0033] With the continuous bending movement of the patient's upper limb, the upper telescopic cylinder 603 and the lower telescopic cylinder 605 in each group of ventilation assemblies 6 are continuously stretched and compressed. In each compression process, air can be introduced into the inside of the ventilation groove 403. When the air flow passes through the ventilation groove 403, it can quickly take away the water vapor formed by the evaporation of sweat, keep the skin surface relatively dry, reduce the sticky feeling and discomfort caused by the accumulation of sweat, improve the comfort of the patient during the use of the electrode patch, and at the same time, the air flow can effectively take away the heat on the skin surface, reduce the skin temperature, and avoid the stuffy feeling caused by the long-term use of the electrode patch. Especially in summer or when the patient's own metabolism is strong, the heat dissipation effect is more obvious. And introducing air flow helps to maintain the dryness of the skin surface, prevent the dilution and erosion of the electrode patch adhesive by sweat, so as to maintain the stickiness of the adhesive, enable the electrode patch to better fit on the skin, reduce the phenomenon of electrode patch falling off or shifting caused by sweating, ensure the fit between the electrode patch and the patient's upper limb, and further ensure the stability and effectiveness of the electrotherapy process.

[0034] The ventilation slot 403 is cross-shaped, and the mounting hole 405 is located in the middle section. However, when the air flow enters the interior of the ventilation slot 403 through the top of the air inlet nozzle 601, the cross-shaped structure enables the air flow to flow from the air inlet in the middle section to the four ends more evenly, achieving a large-area air flow coverage. Moreover, due to the action of the arc corners 404, the ends and the middle connection part of this cross-shaped ventilation slot 403 all become rounded corners, which can avoid the formation of sharp corners of the air flow at these positions, reduce the generation of air flow disorder and eddy currents, enable the air flow to flow more smoothly along the channel, and thus be more evenly distributed throughout the exhaust area, improving the uniformity of the exhaust air. At the same time, the rounded corner treatment can smooth the air flow path, reduce the friction and collision between the air flow and the channel wall, and reduce the resistance of the air flow flowing in the channel. This means that under the same intake pressure, the cross-shaped exhaust channel ventilation slot 403 with rounded corners can make the air flow pass through more efficiently, improve the exhaust efficiency, and help to discharge the sweat and heat near the electrode sheet faster.

[0035] A spring 607 is coaxially arranged inside the upper telescopic cylinder 603. 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 assembly 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 together. A displacement slider 608 is fixedly connected to the bottom end of the lower telescopic cylinder 605. A displacement chute 609 is formed on the inner wall of the support ring 3. The displacement slider 608 is slidably connected to the inside of the displacement chute 609. By providing the displacement slider 608 and the displacement chute 609, a sliding structure is formed between the bottom end of the lower telescopic cylinder 605 and the support ring 3. Moreover, the circular displacement chute 609 does not limit the sliding direction of the displacement slider 608, so that the presence of the ventilation assembly 6 does not affect the movable connection between the electrode sheet and the support ring 3.

[0036] The technical scope of the present invention is not limited to the content described above. 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, It includes a bracket of a rehabilitation training device. Two groups of training driving jigs are symmetrically arranged on the side of the bracket of the rehabilitation training device. A support ring is installed inside the training driving jig. A support cotton block is fixedly connected to the inner wall of the support ring. An installation groove is opened inside the support cotton block. An electrotherapy component is arranged inside the installation groove. The electrotherapy component includes a connecting piece. Four electrotherapy electrode pads are evenly arranged on the top of the connecting piece. An air vent groove is arranged between every two electrotherapy electrode pads. An activity support component is installed at the bottom of the connecting piece. The activity support component is located between the support ring and the electrotherapy component and is used to support the electrotherapy component. The activity support component is movably connected to the support ring; Four air vent components are arranged in a circular array on the side of the activity support component. The air vent component includes an air inlet nozzle. The top end of the air inlet nozzle penetrates through the connecting piece and the air inlet nozzle is communicated with the air vent groove. A flexible cylinder is fixedly connected to the bottom of the air inlet nozzle. An upper telescopic cylinder is fixedly connected to the bottom end of the flexible cylinder. Upper air inlets are evenly opened at the bottom of the flexible cylinder. A lower telescopic cylinder is nested outside the upper telescopic cylinder. Lower air inlets are evenly opened at the top of the lower telescopic cylinder; When the lower telescopic cylinder and the upper telescopic cylinder are in a stretched state, the upper air inlets are aligned with the lower air inlets, and air flows into 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 inlets are staggered from the lower air inlets, and the air flow inside the upper telescopic cylinder flows to the air vent 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, Installation holes are opened inside the connecting piece and the installation holes are distributed at the bottom of the air vent groove. The installation holes are used for the top end of the air inlet nozzle to penetrate 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, wherein, Arc corners are arranged at the four corners of the electrotherapy electrode pad. A connecting wire is electrically connected to the bottom of the electrotherapy electrode pad.

4. The upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to claim 1, characterized in that The activity support component includes a pressure equalizing liquid bag. The top of the pressure equalizing liquid bag is fixedly connected to the connecting piece. A support pressing plate is fixedly connected to the bottom of the pressure equalizing liquid bag.

5. The upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to claim 4, wherein, An upper spherical block is embedded in the support pressing plate. The upper spherical block is rotatably connected to the support pressing plate. A support connecting rod is fixedly connected to the bottom of the upper spherical block. A lower support block is fixedly connected to the bottom end of the support connecting rod. 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.

6. 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.

7. 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 communicated with the flexible cylinder and the air inlet nozzle. The shape of the air inlet nozzle is set as a trumpet shape that gradually shrinks from bottom to top.

8. The upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to claim 1, wherein, A displacement slider is fixedly connected to the bottom end of the lower telescopic cylinder. A displacement sliding groove is opened on the inner wall of the support ring. The displacement slider is slidably connected inside the displacement sliding groove.

9. The upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to claim 8, characterized in that, Air vent holes are arranged on the side of the displacement sliding groove. The air vent holes penetrate through the inside of the support ring. An air inlet hole corresponding to the air vent holes is opened at the bottom of the training driving jig.

10. The upper limb joint range of motion rehabilitation training device based on electrotherapy stimulation according to claim 1, characterized in that, The top of the training driving fixture is fixedly connected with a fixed strap, and the fixed strap is used for fixing the upper limb of the user.

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