Training device for relieving edema of lower limbs and preventing deep venous thrombosis of lower limbs

The motor-driven movable plate and fixed assembly solve the problems of limited application range and fixed angle of existing devices, realize the switching between passive and active training, adapt to patients with different degrees of edema, and significantly improve the training effect and safety.

CN223438807UActive Publication Date: 2025-10-17TONGLING PEOPLES HOSPITAL
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Patent Information

Application Number
CN202422481383.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-14
Publication Date
2025-10-17
Estimated Expiration
2034-10-14

AI Technical Summary

Technical Problem

Existing lower limb training devices lack a passive training mode, have a limited scope of application, and the training pedal has a fixed and unadjustable angle, resulting in poor training results or injury to the patient.

Method used

A trainer was designed, which included a motor-driven movable plate equipped with a fixing component and a limiting component. The trainer could switch between passive and active training, measure the leg circumference with a ruler, and adjust the movable angle to suit patients with different degrees of edema.

Benefits of technology

It has achieved wide applicability for patients with different degrees of edema, significantly improved training effects and efficiency, avoided injuries, and timely adjusted training plans to speed up recovery.

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Abstract

The utility model discloses a trainer for relieving lower limb edema and preventing lower limb deep venous thrombosis, which comprises a bottom plate formed by connecting a first fixed plate and a second fixed plate, the length of the bottom plate is adjustable, a movable plate is hinged on the second fixed plate, two ends of a telescopic rod are respectively hinged with the second fixed plate and the movable plate, and the telescopic rod is connected with the bottom plate. The motor is connected with a hinge shaft of the movable plate, an auxiliary fixing assembly is arranged on the first fixing plate, a tape ruler is arranged on the second fixing plate, a fixing assembly is arranged on the inner side surface of the movable plate, a limiting assembly is arranged on the outer side surface of the movable plate, and the distance between the movable plate and the end of the second fixing plate is larger than the outward extending distance of the limiting assembly. The device has the advantages that the motor is arranged to increase passive training modes, and the application range is wider; the fixing assembly and the auxiliary fixing assembly are used for fixing the feet and the legs respectively to assist in completing passive training; the limiting assembly limits the maximum movement angle of the movable plate, the patient is not injured, and the training efficiency is also improved; the band ruler measures the leg circumference of the patient so as to obtain the edema regression degree.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, and particularly relates to a training device for relieving lower limb edema and preventing deep vein thrombosis of lower limbs. BACKGROUND

[0002] Heart failure, also known as heart failure, is a disease caused by abnormal heart function. Due to the inability of the heart to effectively pump blood, the body organs cannot be supplied with enough blood, and the blood return of the systemic circulation is blocked, resulting in a series of symptoms or complications. Among them, the edema of the lower limbs is one of the common symptoms of heart failure, and the edema of the lower limbs can cause skin tightness, itching, pain and other symptoms, and even seriously cause the patient to be inconvenient to move, affect daily life and work, and also can induce diseases such as venous thrombosis and pulmonary embolism, and increase the medical risk of the patient.

[0003] Chinese patent publication No. CN203971313U discloses a simple lower limb active muscle strength training device for preventing foot drop, which comprises a vertical base plate and a horizontal base plate connected to form an included angle, a training pedal hinged to the vertical base plate and the horizontal base plate in the included angle, and a reset spring arranged between the training pedal and the vertical base plate. By using the device, the patient can train the muscle strength of the lower limbs while lying in bed, promote the recovery of the quadriceps femoris muscle, the triceps surae muscle (including the gastrocnemius muscle and the soleus muscle) and other muscle strength of the patient, prevent ankle stiffness, and prevent foot drop of the patient by connecting the vertical base plate and the horizontal base plate to form a vertical included angle. However, the above-mentioned device has the following defects in use:

[0004] 1. Only the patient can actively move to train the lower limbs, and passive training of the patient cannot be assisted, especially for patients with severe edema, the device cannot be used for training, and the application range is small.

[0005] 2. The maximum activity angle of the training pedal is fixed, and cannot be adjusted according to the actual situation of the patient's edema, which can easily lead to poor training effect or injury to the patient. UTILITY MODEL CONTENT

[0006] The utility model wants to solve the technical problem that the prior art lacks passive training mode and related fixed structure, and the use range is small, and the maximum activity angle of the training pedal is fixed and cannot be adjusted according to the actual situation of the patient, and the training effect is poor, and a training device for relieving lower limb edema and preventing deep vein thrombosis of lower limbs is provided for the problems, which comprises a bottom plate formed by the active connection of a first fixed plate and a second fixed plate, a movable plate hinged to the second fixed plate, a telescopic rod hinged to the second fixed plate and the movable plate at both ends, a motor connected to the hinge shaft of the movable plate, and the length of the bottom plate is adjustable, an auxiliary fixing assembly for fixing the leg is arranged on the first fixed plate, a tape measure for measuring the calf circumference is arranged on the second fixed plate, a fixing assembly for fixing the foot is arranged on the inner surface of the movable plate, a limiting assembly for limiting the activity angle is arranged on the outer surface of the movable plate, and the distance between the movable plate and the end of the second fixed plate is greater than the outward extension distance of the limiting assembly.

[0007] The utility model discloses a technical scheme, which is connected with the hinge shaft of the movable plate through the motor, and the passive training and active training can be switched by turning on and off the motor, so that patients with different edema degrees can complete the training through the device, and the application range is wider; the structure of the fixing assembly and the auxiliary fixing assembly is arranged to fix the foot and the leg of the patient respectively, so that the device always drives the lower limbs of the patient to train when passive training is performed, and the effect is remarkable; the structure of the limiting assembly is arranged to limit the maximum activity angle of the movable plate, and the training efficiency can be improved significantly while the patient is not injured by adjusting according to the different edema degrees of the patient; the tape measure is arranged to measure the leg circumference of the patient, and the edema regression degree of the patient can be obtained through data comparison, so that timely adjustment can be made on the subsequent training and treatment to speed up the recovery.

[0008] The auxiliary fixing assembly of the utility model technical scheme comprises a supplementary pad, first fixing belts are arranged on the front and back sides of the supplementary pad in parallel, the supplementary pad is used for filling the space below the knee joint, the leg of the patient can be as closely attached to the bottom plate as possible, the first fixing belts are adhered through magic tape, and the leg of the patient is fixed, so that the lower limbs of the patient can be trained.

[0009] The first fixed plate of the utility model technical scheme is provided with a connecting block on the side wall facing the second fixed plate, the connecting block is inserted into the second fixed plate, the distance between the first fixed plate and the second fixed plate can be adjusted through the insertion depth of the connecting block, the first fixed plate and the second fixed plate constitute a complete bottom plate, the length of the bottom plate can be adjusted through the insertion depth, and the device can be applied to most patients.

[0010] The utility model discloses the surface of the second fixed plate sets up the clamping groove for receiving the tape measure, and the tape measure is completely received in the clamping groove when not needing to use, avoids projecting on the surface and rubbing the leg part, and influences the experience of the lower limbs training of the patient.

[0011] The utility model discloses the surface of the second fixed plate sets up the clamping groove for receiving the tape measure, and the tape measure is completely received in the clamping groove when not needing to use, avoids projecting on the surface and rubbing the leg part, and influences the experience of the lower limbs training of the patient.

[0012] The utility model discloses the surface of the second fixed plate sets up the clamping groove for receiving the tape measure, and the tape measure is completely received in the clamping groove when not needing to use, avoids projecting on the surface and rubbing the leg part, and influences the experience of the lower limbs training of the patient.

[0013] The utility model discloses the surface of the second fixed plate sets up the clamping groove for receiving the tape measure, and the tape measure is completely received in the clamping groove when not needing to use, avoids projecting on the surface and rubbing the leg part, and influences the experience of the lower limbs training of the patient.

[0014] The utility model discloses the surface of the second fixed plate sets up the clamping groove for receiving the tape measure, and the tape measure is completely received in the clamping groove when not needing to use, avoids projecting on the surface and rubbing the leg part, and influences the experience of the lower limbs training of the patient.

[0015] The utility model discloses the surface of the second fixed plate sets up the clamping groove for receiving the tape measure, and the tape measure is completely received in the clamping groove when not needing to use, avoids projecting on the surface and rubbing the leg part, and influences the experience of the lower limbs training of the patient.

[0016] The lower end of the hinge shaft of the limiting plate is flush with the lower end of the hinge shaft of the movable plate, the angle of the movable plate after reaching the maximum movable angle is intuitively measurable, the rotating angle of the motor is conveniently set in advance, and the motor is prevented from being damaged.

[0017] The utility model has the beneficial effects compared with prior art:

[0018] The technical scheme of the utility model, through setting up motor, motor is connected with the hinge shaft of movable plate, can realize the switching between passive training and active training through switch motor, different edema degree patient can complete training through device, the scope of application is wider;Through setting up the structure of fixed assembly and auxiliary fixed assembly, the foot and leg of patient are fixed respectively, therefore, when device carries out passive training, always drives patient lower limbs to train, the effect is remarkable;Through setting up the structure of limiting assembly, the maximum movable angle of movable plate is limited, is adjusted according to the different edema degree of patient, can significantly improve training efficiency while not damaging patient;Through setting up tape measure, the leg circumference of patient is measured, the edema subsidence degree of patient can be obtained through data comparison, so as to make timely adjustment to subsequent training and treatment, accelerate recovery. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a kind of training device for reducing lower extremity edema and preventing deep vein thrombosis of lower extremity Figure 1 ;

[0020] Figure 2 It is a kind of training device for reducing lower extremity edema and preventing deep vein thrombosis of lower extremity Figure 2 ;

[0021] Figure 3 It is a kind of training device for reducing lower extremity edema and preventing deep vein thrombosis of lower extremity

[0022] Figure 4 It is a kind of training device for reducing lower extremity edema and preventing deep vein thrombosis of lower extremity

[0023] Wherein: 1-first fixed plate, 11-supplementary pad, 12-first fixed band, 13-connection block, 2-second fixed plate, 21-slot, 3-movable plate, 31-second fixed band, 32-connection rope, 33-foot support, 4-telescopic rod, 5-motor, 6-tape measure, 61-clip ring, 62-elastic rope, 7-limiting assembly, 71-positioning plate, 72-limiting plate, 73-adjusting screw, 74-fixing seat. DETAILED DESCRIPTION

[0024] The utility model will be combined with the drawings of the embodiment in the following Figures 1-4The technical scheme in the embodiment of the utility model is described in detail. Embodiment 1

[0025] As Figures 1-4 shown, the utility model relates to a training device for relieving lower limb edema and preventing deep vein thrombosis of lower limbs, which comprises a bottom plate assembled and connected by a first fixed plate 1 and a second fixed plate 2, the length of the bottom plate can be adjusted according to the actual leg length of a patient, a hinged groove is formed in the surface of the second fixed plate 2 away from the first fixed plate 1, a movable plate 3 is located in the hinged groove and hinged to the second fixed plate 2, both ends of an extension rod 4 are hinged to the side wall of the second fixed plate 2 and the movable plate 3 respectively, the extension rod 4 has two ends, which are installed on both sides of the device respectively, and the motor shaft of a motor 5 is fixedly connected to the hinged shaft of the movable plate 3.

[0026] The extension rod 4 is a mature product, which is elongated under stress and automatically shrinks back to the original state after the external force is removed; when the extension rod 4 shrinks, the movable plate 3 is slightly inclined inward; the motor 5 is preferably a servo motor, which is a mature product and can control the angle of rotation of the motor shaft by receiving signals; after the motor 5 is turned off, the motor shaft can still rotate normally, and the device can switch between the passive training mode and the active training mode by turning on and off the motor 5.

[0027] The surface of the first fixed plate 1 is provided with an auxiliary fixing assembly for fixing the leg, the surface of the second fixed plate 2 is provided with a tape 6 for measuring the calf circumference, the inner surface of the movable plate 3 is provided with a fixing assembly for fixing the foot, the outer surface of the movable plate 3 is provided with a limiting assembly 7 for limiting the movement angle, and there is a certain distance between the movable plate 3 and the end of the second fixed plate 2; during the movement of the movable plate 3, the lower part of the limiting assembly 7 is always located in the range above the second fixed plate 2.

[0028] As Figures 1-2 shown, the auxiliary fixing assembly comprises a supplementary pad 11, which is installed on the upper surface of the first fixed plate 1 and located below the knee joint of the patient during use, and is in close contact with the leg of the patient; first fixing belts 12 are installed on the front and rear sides of the supplementary pad 11, and the first fixing belts 12 are parallel to the supplementary pad 11; the first fixing belts 11 can be used to fix the leg of the patient by means of magic tape adhesion, and the first fixing belts 12 and the supplementary pad 11 can make the leg of the patient closely contact with the first fixed plate 1.

[0029] The outer wall of the first fixed plate 1 facing the second fixed plate 2 is outwardly convex to form a connecting block 13, the connecting block 13 extends into the second fixed plate 2 and can adjust the length of the extension into the interior, that is, the distance between the first fixed plate 1 and the second fixed plate 2 is changed, thereby achieving the purpose of adjusting the length of the bottom plate.

[0030] The surface of the second fixing plate 2 is concave to form a clamping groove 21, which is used to accommodate the tape measure 6, so as to prevent the device from rubbing against the patient's leg during movement, affecting the experience, and the tape measure 6 is located at the calf, which can measure the leg circumference of the patient's calf, and according to the comparison of the front and back data, the degree of edema subsidence of the patient can be judged, so as to make corresponding adjustment to the subsequent training and treatment, speed up the recovery speed, and improve the efficiency.

[0031] For the passive training patient, a fixing assembly is installed on the movable plate 3, which includes a second fixing belt 31 for fixing and limiting from above and a foot support 33 for supporting the heel from below, the second fixing belt 31 is installed on the surface of the movable plate 3 and is adhered to the dorsum of the patient's foot by magic tape, so as to fix the patient's foot and the movable plate 3, and the foot support 33 is fixedly connected with the two ends of a connecting rope 32 on both sides, and the connecting rope 32 is fixedly connected with the second fixing plate 2 or the surface of the second fixing plate 2 is provided with an opening, and the connecting rope 32 passes through the opening.

[0032] The foot support 33 is always vertical due to the influence of gravity, and in the initial state, the foot support 33 has a certain distance from the surface of the second fixing plate 2, and the distance is very small, which is to prevent the connecting rope 32 from being slack, at this time, the foot support 33 is suspended in the air, avoiding the patient's foot from slipping out of the second fixing belt 2, and the device cannot work normally and cannot achieve the effect of passive training.

[0033] The patient's foot is fixed by the second fixing belt 31 from above, and the heel is placed on the foot support 33 from below, so that the patient's foot cannot slip off and always moves with the rotation of the movable plate 3, and since the foot support 33 is already suspended in the air in the initial state, the foot support 33 will always be suspended in the air during subsequent work, and the foot support 33 plays a role in lifting from below, and the surface of the foot support 33 is provided with a groove which matches the shape of the heel, so as to facilitate positioning and placing the patient's heel.

[0034] As shown in Figure 3 One end of the tape measure 6 is fixedly connected with a buckle 61, and the zero scale of the tape measure 6 is close to one side of the buckle 61, and the two ends of the elastic rope 62 are fixedly connected with the bottom of the clamping groove 21, so that the middle part of the elastic rope 62 forms a closed ring hole, which is located inside and above the clamping groove 21, and one end of the tape measure 6 passes through the ring hole of the elastic rope 62.

[0035] When the tape measure 6 is needed to measure the calf circumference of the patient, one end of the tape measure 6 passes through the buckle 61 at the other end and is pulled tight, the elastic rope 62 is pulled out, and then the uppermost part of the elastic rope 62 is closely attached to the calf of the patient together with the tape measure 6, and the number corresponding to the buckle 61 at this moment is the calf circumference of the patient, which is recorded, and through comparison, the degree of edema subsidence of the patient can be judged, which provides guidance for subsequent treatment and rehabilitation.

[0036] AsFigure 4 As shown, the limiting assembly 7 includes a positioning plate 71, which is in the shape of "L", and one side of the positioning plate 71 is fixedly connected to the outer surface of the movable plate 3, and the other side of the positioning plate 71 is located above and vertically faces outward, a limiting plate 72 is hinged to the positioning plate 71, and the limiting plate 72 is located below as a whole, an adjusting screw 73 is threadedly connected to the side of the positioning plate 71 which vertically faces outward, and the lower end of the adjusting screw 73 vertically penetrates through the positioning plate 71 and is rotationally connected to a fixed seat 74 which is mounted on the upper surface of the limiting plate 72, and the fixed seat 74 is hinged to the limiting plate 72.

[0037] Initially, the limiting plate 72 is perpendicular to the movable plate 3, when the movable plate 3 is rotated to be perpendicular to the second fixed plate 2, at this time, the limiting plate 72 is in contact with the upper surface of the second fixed plate 2, and the maximum angle of the movable plate 3 is reached, when it is necessary to adjust the maximum angle, the adjusting screw 73 is rotated, the distance between the lower end of the adjusting screw 73 and the upper end of the positioning plate 71 is changed, that is, the distance between the one end of the limiting plate 72 which faces outward and the positioning plate 71 is changed, thus the angle between the limiting plate 72 and the movable plate 3 is changed, and after the limiting plate 72 is in contact with the second fixed plate 2, the angle of the movable plate 3 is also changed.

[0038] As shown, Figure 2 The second fixed plate 2 is provided with a lower recessed contact groove for the limiting assembly 7, and the side wall of the contact groove is provided with scale lines for indicating the angle, so that the angle change of the limiting plate 72 can be directly observed, and then a signal is sent to change the rotation angle of the motor shaft of the motor 5, so that the patient can be protected from injury, and the motor 5 can also be prevented from being damaged.

[0039] When the angle of the limiting plate 72 is adjusted by the adjusting screw 73 of the limiting assembly 7, the medical staff manually rotates the movable plate 3, the limiting plate 72 is in contact with the surface of the second fixed plate 2, and then the actual situation of the patient is considered to slowly adjust until the limit stop that the patient can bear is reached, the angle change of the limiting plate 72 is observed, and a signal is sent to make the rotation angle of the motor 5 less than or equal to the angle change, which is more safe and humanized.

[0040] For patients with severe edema, the lower limbs can be exercised by the passive training mode at the beginning, the strength of the lower limbs is increased, and thrombosis is prevented, with the passage of time, the maximum movement angle can be gradually increased, and the training efficiency is improved, when the maximum movement angle is increased, attention should be paid to not damaging the human body, and the maximum angle is controlled within the limit that the patient can reach as much as possible, and the training efficiency is always maintained; when the patient can actively train as the edema subsides, the motor is turned off, the maximum movement angle is adjusted to the maximum, and the patient can completely rely on self-training.

[0041] The use method of the training device for relieving lower limb edema and preventing deep vein thrombosis of the lower limb in the embodiment is as follows:

[0042] According to the leg length of the patient, the distance between the first fixed plate 1 and the second fixed plate 2 is adjusted, the supplementary pad 11 is located below the knee joint of the patient, the patient's leg is fixedly connected with the first fixed plate 1 through the first fixed belt 12, then the patient's heel is placed on the foot support 33, and the patient's foot is fixedly connected with the movable plate 3 by being fixedly connected with the instep above through the second fixed belt 31, and in the initial state, the limiting plate 72 of the limiting assembly 7.

[0043] When the patient can actively train, the motor 5 does not need to be started, the adjusting bolt 73 is rotated, the distance between the outer end of the limiting plate 72 and the upper part of the positioning plate 71 is reduced to the limit, at this time, the movement angle of the movable plate 3 reaches the maximum, and the patient can exercise according to the own condition.

[0044] When the patient cannot actively train, the movable plate 3 is manually rotated by the medical staff, the limiting plate 72 is attached to the second fixed plate 2, at this time, the movable plate 3 is perpendicular to the second fixed plate 2, the movement angle of the movable plate 3 is not large, and the patient will not be damaged, then the adjusting bolt 73 is rotated, the distance between the outer end of the limiting plate 72 and the upper part of the positioning plate 71 is gradually reduced, the movable plate 3 gradually inclines outward, the maximum movement angle of the movable plate 3 also gradually increases, until the limit of the patient is reached, the adjustment is stopped, the adjustment angle of the limiting plate 72 is observed, a signal is sent, the rotation angle of the motor 5 is controlled within the adjustment angle, the motor 5 is started to passively train the patient, the training effect can be achieved, the training efficiency is improved, and the patient will not be damaged, with the passive training, the calf circumference of the patient is measured by the tape measure 6 regularly, the resolution degree of the edema of the patient is judged, and the maximum movement angle of the movable plate 3 is adjusted in a timely manner according to the recovery condition, the training efficiency is improved, until the motor 5 is closed when the patient can actively train, and the patient completes the active training independently subsequently.

[0045] The above embodiments only illustrate the technical idea of the utility model, and cannot limit the protection range of the utility model, and any modification made on the basis of the technical scheme according to the technical idea of the utility model falls within the protection range of the utility model.

Claims

1. A training device for reducing lower limb edema and preventing deep vein thrombosis of the lower limbs, comprising a base plate formed by a first fixed plate (1) and a second fixed plate (2) being movably connected, a movable plate (3) being hinged on the second fixed plate (2), two ends of a telescopic rod (4) being hinged to the second fixed plate (2) and the movable plate (3), respectively, and a motor (5) being connected to the hinge shaft of the movable plate (3), characterized in that: The length of the bottom plate is adjustable, an auxiliary fixing component for fixing the legs is provided on the first fixing plate (1), a tape ruler (6) for measuring the calf circumference is provided on the second fixing plate (2), a fixing component for fixing the feet is provided on the inner surface of the movable plate (3), a limiting component (7) for limiting the movable angle is provided on the outer surface of the movable plate (3), and the distance between the movable plate (3) and the end of the second fixing plate (2) is greater than the distance the limiting component (7) extends outward.

2. The training device for reducing lower limb edema and preventing lower limb deep vein thrombosis according to claim 1, characterized in that: The auxiliary fixing assembly comprises a supplementary pad (11), and first fixing belts (12) parallel to the supplementary pad (11) are provided on the front and rear sides of the supplementary pad (11).

3. The training device for alleviating lower limb edema and preventing lower limb deep vein thrombosis according to claim 1, characterized in that: A connecting block (13) is provided on the side wall of the first fixing plate (1) facing the second fixing plate (2), the connecting block (13) is plugged into the second fixing plate (2), and the distance between the first fixing plate (1) and the second fixing plate (2) can be adjusted by the plugging depth of the connecting block (13).

4. The training device for alleviating lower limb edema and preventing lower limb deep vein thrombosis according to claim 1, characterized in that: A slot (21) for receiving a tape ruler (6) is provided on the surface of the second fixing plate (2).

5. The training device for alleviating lower limb edema and preventing lower limb deep vein thrombosis according to claim 1, characterized in that: The fixing assembly comprises a second fixing belt (31) for fitting the instep and a footrest (33) for supporting the heel, wherein the second fixing belt (31) is located above the movable plate (3), and both ends of the footrest (33) are connected to the movable plate (3) via a connecting rope (32) and are naturally vertical, and a certain distance is maintained between the footrest (33) and the surface of the second fixing plate (2).

6. The training device for alleviating lower limb edema and preventing lower limb deep vein thrombosis according to claim 5, characterized in that: The surface of the footrest (33) is provided with a groove matching the heel.

7. The training device for alleviating lower limb edema and preventing lower limb deep vein thrombosis according to claim 4, characterized in that: One end of the tape ruler (6) is provided with a buckle (61), both ends of the elastic cord (62) are connected to the bottom of the slot (21), the upper portion of the elastic cord (62) is bent into a ring hole, and the tape ruler (6) passes through the ring hole on the upper portion of the elastic cord (62).

8. The training device for alleviating lower limb edema and preventing lower limb deep vein thrombosis according to claim 7, characterized in that: The zero scale of the tape ruler (6) is located on one side of the buckle (61).

9. The training device for alleviating lower limb edema and preventing lower limb deep vein thrombosis according to claim 1, characterized in that: The limiting assembly (7) includes a positioning plate (71), the positioning plate (71) is in an "L" shape, one side of the positioning plate (71) is connected to the movable plate (3), the other side of the positioning plate (71) faces outward and is located above, the limiting plate (72) is hinged to the positioning plate (71) and is located below, the adjusting screw (73) is threadedly connected to the side of the positioning plate (71) facing vertically outward, the adjusting screw (73) vertically passes through the positioning plate (71) and is rotatably connected to the fixing seat (74), and the fixing seat (74) is hinged to the upper surface of the limiting plate (72).

10. The training device for alleviating lower limb edema and preventing lower limb deep vein thrombosis according to claim 9, characterized in that: The lower end of the hinge shaft of the limiting plate (72) is flush with the lower end of the hinge shaft of the movable plate (3).

Citation Information

Patent Citations

  • Simple lower limb active muscular strength training device capable of preventing feet from drooping

    CN203971313U