Gait training auxiliary device for stroke rehabilitation

Abstract

The application discloses a gait training auxiliary device for stroke rehabilitation and relates to the technical field of medical auxiliary instruments.The gait training auxiliary device comprises a treadmill, a guardrail, a supporting pivot, a fixing sleeve, a sliding shaft, a winding wheel, a locking unit, an elastic belt, a foot pedal, a winding unit and a trigger unit.The trigger unit is used for triggering the locking unit to fail after the supporting pivot is rotated to a fixed angle, so that the winding unit drives the winding wheel to rotate.The elastic belt and the foot pedal are arranged, the patient places the feet on the foot pedal, then walks on the treadmill for rehabilitation training, when the angle of the patient's legs is large, the trigger unit is actuated, the locking unit is triggered to fail, the sliding shaft and the winding wheel are disconnected from the locking connection state, the winding unit drives the winding wheel to rotate, the elastic belt can assist the patient to quickly lift the legs when winding, the patient can be prevented from falling down, and the uncomfortable feeling during the training can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical assistive devices, and in particular to a gait training assistive device for stroke rehabilitation. Background Art

[0002] "Stroke," also known as "cerebrovascular accident," is an acute cerebrovascular disease caused by a sudden rupture of a cerebral blood vessel or a blockage that prevents blood flow to the brain, leading to brain damage. The most common symptoms of a stroke are sudden weakness in one side of the face, arm, or leg, followed by fainting and unconsciousness. In addition to medication or surgery, scientific rehabilitation training is crucial for improving motor function. For patients with moderate to moderate walking ability, walking rehabilitation training is a common approach, often using a stroke rehabilitation device.

[0003] For example, the patent publication number CN 109316315 A discloses a limb-assisted rehabilitation system for patients with sequelae of stroke, which is mainly composed of three parts: a main frame, a motion-generating mechanism, and a motion-executing device. Through the motion-generating mechanism and initial position planning, the reciprocating motion of the two pedals of the lower limbs with opposite phases and the synchronous motion of the rotary rocker arm of the upper limb can be achieved only through the continuous movement of a drive motor. It has a variety of rehabilitation training modes. With the help of a lifting device and a multi-functional seat backrest, patients can passively perform standing and sitting lower limb gait rehabilitation training and upper limb rehabilitation training, and the training amplitude and frequency can be steplessly adjusted according to their physical condition. It uses an offset rod located between the pedal and the end of the connecting rod to achieve the standard concentric crank slider mechanism motion characteristics and eliminate the pedal movement snapback phenomenon.

[0004] The patent publication number is CN 219001043 U, which discloses a gait assistance device for rehabilitation training of stroke patients, including a base, a first handrail fixedly connected to the middle of the base, a second handrail arranged below the first handrail, a movable plate inserted in the base, a connecting plate fixedly arranged at one end of the movable plate, a gear arranged on one side, a hip strap arranged in the middle of the second handrail, and fixed boxes arranged on both sides of the bottom of the base. This application ensures the safety of patients during walking rehabilitation by arranging back, waist and hip straps to avoid injuries caused by accidental falls of patients. The movable plate with a rack is driven to rise by arranging gears to control the back strap, which is convenient for adapting to the height requirements of different patients. The rehabilitation device can increase the difficulty of rehabilitation by arranging a telescopic rod and an obstacle block with a magnet, so that the nursing staff can increase or reduce the difficulty of rehabilitation according to the patient's condition, so as to facilitate the patient to improve the rehabilitation efficiency.

[0005] The above-mentioned structure and the gait training auxiliary equipment in the prior art are generally used for walking training on a treadmill. Since stroke patients have poor limb coordination ability in the early stages of rehabilitation, they may not be able to keep up with the speed of the treadmill during walking, which may cause the patient's legs to open at an excessively large angle, causing discomfort to the patient and potentially posing a safety hazard.

[0006] To this end, we propose a gait training assistive device for stroke rehabilitation. Summary of the Invention

[0007] The purpose of the present invention is to overcome the defects and shortcomings of the existing technology and provide a gait training auxiliary device for stroke rehabilitation to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A gait training auxiliary device for stroke rehabilitation, comprising a treadmill, including:

[0010] a guardrail mounted on the treadmill via a bracket;

[0011] A support pivot is horizontally rotatably connected to both sides of the guardrail, wherein opposite ends of the support pivot are coaxially fixed with a fixing sleeve, and one end of the support pivot facing the inner side of the treadmill is coaxially provided with a mounting hole in the form of a blind hole;

[0012] A sliding shaft coaxially arranged in the mounting hole, wherein the sliding shaft slides freely in the mounting hole;

[0013] A winding wheel is sleeved on the sliding shaft, the winding wheel is provided with a through hole for the sliding shaft to freely pass through, the sliding shaft is provided with a locking unit for limiting the rotation of the winding wheel, an elastic belt is wound on the winding wheel, and a foot pedal is provided at one end of the elastic belt extending to the outside of the fixed sleeve, and a winding unit is provided in the fixed sleeve, and the winding unit is used to drive the winding wheel to rotate, thereby winding the elastic belt;

[0014] A trigger unit is provided on the support pivot, and the trigger unit is used to trigger the locking unit to fail after the support pivot rotates to a fixed angle, so that the winding unit drives the winding wheel to rotate.

[0015] Furthermore, a fixing tube is fixedly connected to the periphery of the fixing sleeve, and an elastic band opening is provided in the fixing tube and passes through the interior of the fixing sleeve, and the elastic band passes through the elastic band opening.

[0016] Furthermore, an elastic band is provided on the fixing tube.

[0017] Furthermore, the winding unit includes a fixing ring coaxially fixed to the end surface of the winding wheel, a vortex spring is installed in the fixing ring, and the vortex spring is sleeved on the support pivot.

[0018] Furthermore, the locking unit includes:

[0019] Two clamping blocks are engaged with the installation cavity defined by the sliding shaft, and the clamping blocks slide freely up and down in the installation cavity. A first waist-shaped hole is defined on the periphery of the support pivot shaft for the clamping blocks to pass freely through, and a locking groove is defined on the inner wall of the perforation of the winding wheel for the clamping blocks to engage with;

[0020] A connecting pin fixedly connected to one end of the sliding shaft, the supporting pivot being provided with a second waist-shaped hole for the connecting pin to freely pass through;

[0021] A sliding ring sleeved on the support pivot, the sliding ring slides freely on the support pivot, and one end of the connecting pin passing through the sliding shaft is fixedly connected to the sliding ring;

[0022] A sliding pin is fixed to the clamping block, and a third waist-shaped hole for the sliding pin to be inserted is provided on the periphery of the sliding shaft. The length direction of the third waist-shaped hole forms an angle with the axial direction of the sliding shaft.

[0023] Furthermore, a tension spring is installed in the mounting hole, and two ends of the tension spring are respectively fixed to the end surface of the sliding shaft and the inner wall of the mounting hole.

[0024] Furthermore, the trigger unit includes:

[0025] A locking ring fixed to the outer wall of the guardrail, the locking ring being coaxially sleeved on the support pivot and freely rotatable, and two protrusions being provided on one end surface of the locking ring facing the sliding ring;

[0026] Two driving pins are horizontally fixed to the end surface of the sliding ring, and the driving pins are in sliding contact with the end surface of the locking ring and the surface of the protrusion.

[0027] Furthermore, a ball is rotatably embedded in the end of the driving pin, and the ball is in rolling contact with the end face of the locking ring and the surface of the convex block.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The present invention provides an elastic belt and a foot pedal. The patient places his feet on the foot pedal and then performs walking rehabilitation training on the treadmill. When the patient's legs are opened at a large angle, the trigger unit is activated, thereby triggering the locking unit to be disabled, so that the sliding shaft and the winding wheel are disengaged from the locked connection state, and the winding unit drives the winding wheel to rotate. When the elastic belt is wound, it can assist the patient in quickly lifting his legs, thereby preventing the patient from falling and reducing discomfort during training.

[0030] The present invention is configured so that when the fixed sleeve rotates at an excessively large angle, the ball bearing is disengaged from the protrusion, causing the tension spring to pull the sliding shaft toward the outside of the fixed sleeve, thereby causing the sliding pin on the clamping block to slide in the third waist-shaped hole, thereby causing the clamping block to retract into the sliding shaft and disengage from the locking groove, thereby allowing the winding wheel to rotate on the sliding shaft, and allowing the volute spring to drive the winding wheel to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of a gait training auxiliary device for stroke rehabilitation in the present invention;

[0032] Figure 2 for Figure 1 Schematic diagram of the middle structure from a side view;

[0033] Figure 3 This is a schematic diagram of the structure of the fixing sleeve, the fixing cylinder and the elastic band after being assembled in the present invention;

[0034] Figure 4 for Figure 3 Schematic diagram of the exploded structure;

[0035] Figure 5 for Figure 4 Schematic cross-sectional view of the structure;

[0036] Figure 6 for Figure 5 A magnified schematic diagram of the local structure at point A;

[0037] Figure 7 for Figure 5 A magnified schematic diagram of the local structure at point B in the middle;

[0038] Figure 8 for Figure 3 Schematic diagram of explosion and decomposition of the structure from another angle;

[0039] Figure 9 for Figure 8 Enlarged schematic diagram of the local structure at point C in the middle.

[0040] The descriptions of the reference numerals in the figure are as follows: 1. treadmill; 2. bracket; 3. fixing ring; 4. guardrail; 5. fixing sleeve; 6. winding wheel; 7. sliding shaft; 8. fixing cylinder; 9. elastic belt; 10. foot pedal; 11. support pivot; 12. mounting cavity; 13. volute spring; 14. sliding ring; 15. first waist-shaped hole; 16. locking ring; 17. protrusion; 18. tension spring; 19. second waist-shaped hole; 20. connecting pin; 21. mounting hole; 22. ball bearing; 23. driving pin; 24. block; 25. third waist-shaped hole; 26. sliding pin. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] See also Figures 1-9 ;

[0043] The present invention provides a technical solution: a gait training auxiliary device for stroke rehabilitation, comprising a treadmill 1, wherein a bracket 2 is installed on each edge of the treadmill 1, and a guardrail 4 is welded to the upper ends of the two brackets 2, and the guardrail 4 is U-shaped. In addition, the opposite sides of the guardrail 4 are horizontally rotatably connected with a support pivot 11, and the opposite ends of the support pivot 11 are coaxially fixed with a fixing sleeve 5, and the support pivot 11 is coaxially provided with a mounting hole 21 in the form of a blind hole at one end facing the inner side of the treadmill 1, and a sliding shaft 7 that can slide freely is coaxially penetrated in the mounting hole 21, and the sliding shaft 7 slides freely in the mounting hole 21, and a winding wheel 6 is sleeved on the sliding shaft 7, and the winding wheel 6 is provided with a through hole for the sliding shaft 7 to pass freely, and a downwardly extending fixing cylinder 8 is fixedly connected to the periphery of the fixing sleeve 5, and an elastic band is installed on the fixing cylinder 8. In addition, an elastic band is wound around the winding wheel 6. The elastic belt 9 and the fixed cylinder 8 are provided with an elastic belt hole for the elastic belt 9 to pass through. The end of the elastic belt 9 unwound from the reel 6 passes through the elastic belt hole and is installed with a foot pedal 10. During training and rehabilitation, the patient stands on the treadmill 1, and the treadmill 1 stops running. Then, both feet are placed on the two foot pedals 10 respectively, and then the elastic belt is tied to the patient's thighs, so that when the patient's thigh swings, it can synchronously drive the fixed cylinder 8 to swing, and then the fixed sleeve 5 can rotate around the axial direction of the support pivot 11. The length of the elastic belt 9 in the natural state needs to ensure that there is a certain longitudinal distance between the foot pedal 10 and the treadmill 1, so that the elastic belt 9 can be stretched after the patient stands on the foot pedal 10 to assist the patient in lifting his legs, thereby producing an auxiliary effect on the patient's leg bending and walking assistance training;

[0044] The end face of the winding wheel 6 is coaxially fixedly connected with a fixing ring 3, a vortex spring 13 is installed in the fixing ring 3, and the vortex spring 13 is sleeved on the support pivot 11. A mounting hole 21 in the form of a blind hole is coaxially opened on the support pivot 11, and a sliding shaft 7 is coaxially penetrated in the mounting hole 21. The sliding shaft 7 can slide freely in the mounting hole 21. A connecting pin 20 is penetrated at one end of the sliding shaft 7 located outside the fixed sleeve 5. The support pivot 11 is provided with a second waist-shaped hole 19 for the connecting pin 20 to pass freely. A mounting cavity 12 is opened in the sliding shaft 7, and two clamping blocks 24 are symmetrically engaged along the axial direction of the sliding shaft 7 in the mounting cavity 12. The clamping block 24 slides freely up and down in the mounting cavity 12, and the support A first waist-shaped hole 15 is provided on the periphery of the support pivot 11 for the free passage of the card block 24, and a locking groove for the engagement of the card block 24 is provided on the inner wall of the perforation of the winding wheel 6. A sliding ring 14 is sleeved on the support pivot 11, and the sliding ring 14 slides freely on the support pivot 11, and one end of the connecting pin 20 passing through the sliding shaft 7 is fixed to the sliding ring 14, and a sliding pin 26 is fixedly connected to the card block 24. A third waist-shaped hole 25 is provided on the periphery of the sliding shaft 7 for the engagement of the sliding pin 26, and the length direction of the third waist-shaped hole 25 forms an angle with the axial direction of the sliding shaft 7. A tension spring 18 is installed in the mounting hole 21, and the two ends of the tension spring 18 are respectively fixed to the end face of the sliding shaft 7 and the inner wall of the mounting hole 21;

[0045] A locking ring 16 is fixedly connected to the outer wall of the guardrail 4. The locking ring 16 is coaxially sleeved on the support pivot 11 and can rotate freely. Two protrusions 17 are provided on one end face of the locking ring 16 facing the sliding ring 14. Two driving pins 23 are fixedly connected horizontally to the end face of the sliding ring 14. The ends of the driving pins 23 are rotatably embedded with balls 22. The balls 22 roll and contact the end face of the locking ring 16 and the surface of the protrusions 17.

[0046] In the initial state, since the ball 22 contacts the surface of the protrusion 17, the sliding ring 14 drives the sliding shaft 7 to move in the direction away from the guardrail 4, and the tension spring 18 is in an extended state. At this time, the sliding pin 26 slides in the third waist-shaped hole 25, thereby causing the sliding pin 26 to drive the clamping block 24 to move toward the outside direction of the sliding shaft 7, and causing the clamping block 24 to engage in the locking groove of the winding wheel 6. At this time, the winding wheel 6 and the sliding shaft 7 are in a locked connection state, that is, the sliding shaft 7 and the winding wheel 6 are relatively stationary, and the spiral spring 13 is in a reeled state and accumulates elastic potential energy. When the patient's leg swings too much, the ball 22 rolls off the surface of the protrusion 17 When it moves to the end face of the locking ring 16, the elastic potential energy accumulated in the tension spring 18 is released, and drives the sliding shaft 7 to move in the direction away from the fixed sleeve 5, so that the sliding pin 26 slides in the opposite direction in the third waist-shaped hole 25, thereby causing the block 24 to disengage from the locking groove on the winding wheel 6. At this time, the winding wheel 6 and the sliding shaft 7 are disengaged from the locked connection state. Due to the release of the elastic potential energy of the spiral spring 13, the winding wheel 6 is driven to rotate. When the winding wheel 6 rotates, it will produce a winding effect on the elastic belt 9, greatly increasing the force to assist the patient in lifting the legs, so that when the patient's legs are opened too wide, they can quickly lift up to restore the posture, avoiding discomfort and safety hazards.

[0047] The working principle of the present invention is as follows: during training and rehabilitation, the patient stands on the treadmill 1, and the treadmill 1 stops running. Then, the patient places both feet on the two footboards 10 respectively, and then the elastic band is tied to the patient's thigh, so that when the patient's thigh swings, it can synchronously drive the fixed cylinder 8 to swing, and then the fixed sleeve 5 can rotate around the axial direction of the support pivot 11. The length of the elastic band 9 in the natural state needs to ensure that there is a certain longitudinal distance between the footboard 10 and the treadmill 1, so that the elastic band 9 can be stretched after the patient stands on the footboard 10, so as to assist the patient in lifting his legs, thereby producing an auxiliary effect on the patient's leg bending and walking assistance training;

[0048] Start the treadmill 1, run it at a slow speed, and the patient performs walking training to achieve the purpose of rehabilitation training. During the patient's normal walking training, the ball 22 always keeps in contact with the surface of the protrusion 17, so that the sliding ring 14 drives the sliding shaft 7 to move in the direction away from the guardrail 4, and makes the tension spring 18 in an extended state. At this time, the sliding pin 26 slides in the third waist-shaped hole 25, so that the sliding pin 26 drives the block 24 to move toward the outside direction of the sliding shaft 7, and makes the block 24 engage in the locking groove of the winding wheel 6. At this time, the winding wheel 6 and the sliding shaft 7 are in a locked connection state, that is, the sliding shaft 7 and the winding wheel 6 are relatively stationary, and at this time the spiral spring 13 is in a wound state and accumulates elastic potential energy. When the patient's legs When the swing angle of the upper part is too large, the ball 22 rolls from the surface of the protrusion 17 to the end face of the locking ring 16, and the elastic potential energy accumulated in the tension spring 18 is released, driving the sliding shaft 7 to move in the direction away from the fixed sleeve 5, so that the sliding pin 26 slides in the opposite direction in the third waist-shaped hole 25, thereby causing the block 24 to disengage from the locking groove on the winding wheel 6. At this time, the winding wheel 6 and the sliding shaft 7 are disengaged from the locked connection state. Due to the release of the elastic potential energy of the spiral spring 13, the winding wheel 6 is driven to rotate. When the winding wheel 6 rotates, it will produce a winding effect on the elastic belt 9, greatly increasing the force to assist the patient in lifting the legs, so that when the patient's legs are opened at too large an angle, they can quickly lift up to restore the posture, avoiding discomfort and safety hazards.

[0049] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A gait training auxiliary device for stroke rehabilitation, comprising a treadmill (1), characterized in that: include: A guardrail (4) mounted on the treadmill (1) via a bracket (2); A support pivot (11) is horizontally rotatably connected to both sides of the guardrail (4), wherein opposite ends of the support pivot (11) are coaxially fixed with a fixing sleeve (5), and one end of the support pivot (11) facing the inner side of the treadmill (1) is coaxially provided with a mounting hole (21) in the form of a blind hole; a sliding shaft (7) coaxially disposed in the mounting hole (21), wherein the sliding shaft (7) slides freely in the mounting hole (21); A reel (6) is sleeved on the sliding shaft (7), the reel (6) is provided with a through hole for the sliding shaft (7) to freely pass through, the sliding shaft (7) is provided with a locking unit for limiting the rotation of the reel (6), an elastic belt (9) is wound on the reel (6), and a pedal (10) is provided at one end of the elastic belt (9) extending to the outside of the fixed sleeve (5), and a reel unit is provided in the fixed sleeve (5), and the reel unit is used to drive the reel (6) to rotate, thereby reeling the elastic belt (9); A trigger unit is provided on the support pivot (11), and is used to trigger the locking unit to fail after the support pivot (11) rotates to a fixed angle, so that the winding unit drives the winding wheel (6) to rotate.

2. The gait training auxiliary device for stroke rehabilitation according to claim 1, characterized in that: A fixing tube (8) is fixedly connected to the periphery of the fixing sleeve (5), and an elastic band opening is provided in the fixing tube (8) and passes through the interior of the fixing sleeve (5), and the elastic band (9) passes through the elastic band opening.

3. The gait training auxiliary device for stroke rehabilitation according to claim 2, characterized in that: An elastic band is provided on the fixing tube (8).

4. The gait training auxiliary device for stroke rehabilitation according to claim 1, characterized in that: The winding unit comprises a fixing ring (3) coaxially fixed to the end face of the winding wheel (6), a vortex spring (13) is installed in the fixing ring (3), and the vortex spring (13) is sleeved on the support pivot (11).

5. The gait training auxiliary device for stroke rehabilitation according to claim 1, characterized in that: The locking unit comprises: Two clamping blocks (24) are engaged in the installation cavity (12) opened by the sliding shaft (7), and the clamping blocks (24) slide freely up and down in the installation cavity (12). A first waist-shaped hole (15) is opened on the periphery of the support pivot (11) for the clamping blocks (24) to pass freely, and a locking groove is opened on the inner wall of the perforation of the winding wheel (6) for the clamping blocks (24) to engage; A connecting pin (20) is fixedly connected to one end of the sliding shaft (7), and the support pivot (11) is provided with a second waist-shaped hole (19) for the connecting pin (20) to freely pass through; A sliding ring (14) sleeved on the support pivot (11), the sliding ring (14) slides freely on the support pivot (11), and one end of the connecting pin (20) passes through the sliding shaft (7) and is fixed to the sliding ring (14); A sliding pin (26) is fixed to the clamping block (24), and a third waist-shaped hole (25) for inserting the sliding pin (26) is provided on the periphery of the sliding shaft (7), wherein the length direction of the third waist-shaped hole (25) forms an angle with the axial direction of the sliding shaft (7).

6. The gait training auxiliary device for stroke rehabilitation according to claim 5, characterized in that: A tension spring (18) is installed in the mounting hole (21), and two ends of the tension spring (18) are respectively fixed to the end surface of the sliding shaft (7) and the inner wall of the mounting hole (21).

7. The gait training auxiliary device for stroke rehabilitation according to claim 5, characterized in that: The trigger unit includes: A locking ring (16) fixed to the outer wall of the guardrail (4), the locking ring (16) being coaxially sleeved on the support pivot (11) and freely rotatable, and two protrusions (17) being provided on one end surface of the locking ring (16) facing the sliding ring (14); Two driving pins (23) are horizontally fixed to the end surface of the sliding ring (14), and the driving pins (23) are in sliding contact with the end surface of the locking ring (16) and the surface of the protrusion (17).

8. The gait training auxiliary device for stroke rehabilitation according to claim 7, characterized in that: A ball (22) is rotatably embedded in the end of the driving pin (23), and the ball (22) is connected to the end face of the locking ring (16) and the surface of the protrusion (17) in rolling contact.

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