Knee joint active flexion and extension function exercise device used after total knee arthroplasty

Abstract

The utility model discloses a total knee arthroplasty postoperative knee joint active flexion and extension function exercise device which comprises a box body, sliding grooves are formed in the front side and the rear side of the top of the box body, and sliding blocks are arranged in the sliding grooves. When a patient takes exercises, the foot sole is put into a limiting belt and falls on the top of a pedal plate, a motor is started, the motor drives a gear to rotate, the gear drives a front toothed plate to move leftwards and drives a rear toothed plate to move rightwards, and the toothed plates drive a sliding block and the pedal plate to move towards the side away from the motor; the pedal plates drive the two feet of the patient to move, the knee joints are continuously opened and closed in the moving process of the two feet of the patient, the knee joints can be efficiently recovered, the two pedal plates are arranged on the device, the two knees can be simultaneously exercised and recovered, no assembly structure is arranged over the pedal plates, the shanks of the patient cannot be blocked, and the recovery efficiency is improved. The knee joint opening angle of the patient is large, and the knee joint recovery effect of the patient is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a device for exercising the active flexion and extension function of a knee joint after total knee replacement. Background Art

[0002] After total knee replacement surgery, a knee joint active flexion and extension function training device is needed to promote patient recovery. The patent publication number is 202020108073.3, which discloses a knee joint active flexion and extension function training device after total knee replacement surgery, including: a base plate, a foot pedal, a left column, a right column, a winding drum, a front drive component, a rear drive component, a left grip and a right grip; under normal circumstances, the patient places his feet on the foot pedal, and the patient uses the strength of his legs to drive the foot pedal to slide forward or backward to actively flex and extend the knee joint; if the patient is unable to actively move to a reasonable range due to pain or insufficient strength in the lower limbs, the patient can hold the left grip and the right grip with both hands for auxiliary exercise; compared with the existing technology, the utility model is beneficial for the patient to perform active flexion and extension exercises of the affected limb after surgery.

[0003] The above-mentioned existing technical solutions have the following defects: there is only one foot pedal on the device. When the patient has undergone total knee replacement on both legs, it is impossible to exercise and recover both knees at the same time. The foot pedal is driven to move by winding the pull rope with a winding roller. The winding roller is located directly above the foot pedal. When the patient's foot drives the calf and knee joint to move, the patient's calf is likely to touch the winding roller, and the winding roller will block the patient's calf and prevent it from moving further, resulting in the patient's knee joint opening and closing angle being restricted, reducing the recovery effect of the patient's knee joint. Utility Model Content

[0004] In order to solve the problems raised in the above-mentioned background technology, the purpose of the present invention is to provide a device for exercising the active flexion and extension function of the knee joint after total knee replacement surgery, which has the advantage of efficiently restoring the knee joint and solves the problem that there is only one foot pedal on the device. When the patient has undergone total knee replacement on both legs, it is impossible to exercise and recover both knees at the same time. The foot pedal is driven to move by winding the pull rope with a winding roller. The winding roller is located directly above the foot pedal. When the patient's foot drives the calf and knee joint to move, the patient's calf is easy to touch the winding roller, and the winding roller will block the patient's calf and cannot continue to move, resulting in the patient's knee joint opening and closing angle being restricted, thereby reducing the patient's knee joint recovery effect.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a device for exercising the active flexion and extension function of the knee joint after total knee replacement surgery, comprising a box body, wherein the front and rear sides of the top of the box body are provided with slide grooves, a slider is provided inside the slide groove, the top of the slider is fixedly connected to a foot pedal, the top of the foot pedal is fixedly connected to a limiting belt, and a movable mechanism is provided inside the box body.

[0006] As a preferred embodiment of the present invention, the movable mechanism includes a motor, the bottom of the motor is fixedly connected to the bottom of the inner wall of the box, the output end of the motor is fixedly connected to a gear, the front and rear sides of the gear are meshed with tooth plates, a sliding rod is provided inside the tooth plate, the surface of the sliding rod is fixedly connected to the inner wall of the box, and the bottom of the slider is fixedly connected to the top of the tooth plate.

[0007] As a preferred embodiment of the present invention, a weight-reducing groove is provided on the front side of the foot pedal, the weight-reducing groove is located at the top of the box body, and the weight-reducing groove is located at the bottom of the limiting belt.

[0008] As a preferred embodiment of the present invention, shielding cloths are fixedly connected to both sides of the slider, the surface of the shielding cloths is fixedly connected to the inner wall of the slide groove, and the shielding cloths are located at the bottom of the foot pedal.

[0009] As a preferred embodiment of the present invention, the top of the foot pedal is fixedly connected with a convex point, the number of the convex points is several, and the convex points are distributed at equal distances.

[0010] As a preferred embodiment of the present invention, a stabilizing sleeve is provided on the surface of the output end of the motor, the top of the stabilizing sleeve is fixedly connected to the top of the inner wall of the box, and the shape of the stabilizing sleeve is circular.

[0011] As a preferred embodiment of the present invention, pulleys are provided on the front and rear sides of the tooth plate, and the pulleys are hinged to the inner wall of the box through connecting blocks and pins. There are several pulleys, and the pulleys are distributed at equal distances.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. When exercising, the patient puts the sole of the foot into the limiting belt and places it on the top of the foot pedal. The motor is started, the motor drives the gear to rotate, the gear drives the front gear plate to move to the left, and at the same time the gear drives the rear gear plate to move to the right, the gear plate drives the slider and the foot pedal to move to the side away from the motor, and the foot pedal drives the patient's feet to move. During the movement of the patient's feet, the knee joints are constantly opened and closed for exercise, which has the advantage of efficiently recovering the knee joint. There are two foot pedals on the device, which can exercise and recover both knees at the same time. There is no component structure directly above the foot pedal, the patient's calf will not be blocked, the patient's knee joint has a large opening and closing angle, and the patient's knee joint recovery effect is improved.

[0014] 2. The utility model is capable of driving the foot pedal to move by providing a movable mechanism, thereby preventing the foot pedal from being unable to move automatically, resulting in the patient's knee joint being unable to be exercised, and improving the patient's recovery effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a three-dimensional diagram of the tooth plate of the utility model;

[0017] Figure 3 It is a three-dimensional diagram of the foot pedal of the present utility model.

[0018] In the figure: 1. Box body; 2. Slide groove; 3. Slider; 4. Foot pedal; 5. Limiting belt; 6. Movable mechanism; 61. Motor; 62. Gear; 63. Tooth plate; 64. Sliding rod; 7. Weight reduction groove; 8. Shielding cloth; 9. Bump; 10. Stabilizing sleeve; 11. Pulley. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0020] like Figures 1 to 3 As shown, the knee joint active flexion and extension function training device after total knee replacement surgery provided by the present invention includes a box body 1, and the front and rear sides of the top of the box body 1 are both provided with a slide groove 2, and a slider 3 is provided inside the slide groove 2. The top of the slider 3 is fixedly connected to a foot pedal 4, and the top of the foot pedal 4 is fixedly connected to a limiting belt 5. A movable mechanism 6 is provided inside the box body 1.

[0021] refer to Figure 2 The movable mechanism 6 includes a motor 61, the bottom of the motor 61 is fixedly connected to the bottom of the inner wall of the box body 1, the output end of the motor 61 is fixedly connected to a gear 62, the front and rear sides of the gear 62 are meshed with tooth plates 63, a slide rod 64 is provided inside the tooth plate 63, the surface of the slide rod 64 is fixedly connected to the inner wall of the box body 1, and the bottom of the slider 3 is fixedly connected to the top of the tooth plate 63.

[0022] As a technical optimization solution of the present invention, by setting up the movable mechanism 6, the foot pedal 4 can be driven to move, thereby avoiding the foot pedal 4 being unable to move automatically, resulting in the patient's knee joint being unable to be exercised, and improving the patient's recovery effect.

[0023] refer to Figure 2 A weight-reducing groove 7 is provided on the front side of the foot pedal 4 , the weight-reducing groove 7 is located at the top of the box body 1 , and the weight-reducing groove 7 is located at the bottom of the limiting belt 5 .

[0024] As a technical optimization solution of the present invention, by providing the weight-reducing groove 7 , the weight of the foot pedal 4 can be reduced, thereby avoiding the foot pedal 4 being too heavy, resulting in a high working pressure of the motor 61 , and improving the movement stability of the foot pedal 4 .

[0025] refer to Figure 2 , both sides of the slider 3 are fixedly connected with a shielding cloth 8, the surface of the shielding cloth 8 is fixedly connected to the inner wall of the slide 2, and the shielding cloth 8 is located at the bottom of the foot pedal 4.

[0026] As a technical optimization solution of the present invention, by setting a shielding cloth 8, the interior of the box body 1 can be shielded to prevent foreign matter from entering the interior of the box body 1, prevent the gear 62 and the tooth plate 63 from being stuck, and improve the coordination efficiency of the gear 62 and the tooth plate 63.

[0027] refer to Figure 1 The top of the foot pedal 4 is fixedly connected with a convex point 9, the number of the convex points 9 is several, and the convex points 9 are distributed at equal distances.

[0028] As a technical optimization solution of the present invention, by setting the protrusion 9, the friction between the foot pedal 4 and the patient can be increased, avoiding the small friction between the foot pedal 4 and the patient, resulting in sliding between the foot pedal 4 and the patient, thereby improving the working efficiency of the foot pedal 4.

[0029] refer to Figure 2 The surface of the output end of the motor 61 is provided with a stabilizing sleeve 10 , the top of the stabilizing sleeve 10 is fixedly connected to the top of the inner wall of the box body 1 , and the shape of the stabilizing sleeve 10 is circular.

[0030] As a technical optimization solution of the present invention, by providing a stabilizing sleeve 10 , the output end of the motor 61 can be stabilized, thereby preventing the output end of the motor 61 from tilting during rotation, thereby improving the stability of the motor 61 .

[0031] refer to Figure 2 Pulleys 11 are provided on the front and rear sides of the tooth plate 63. The pulleys 11 are hinged to the inner wall of the box body 1 through a connecting block and a pin. There are several pulleys 11, and the pulleys 11 are distributed at equal distances.

[0032] As a technical optimization solution of the present invention, by setting the pulley 11, the sliding of the tooth plate 63 can be stabilized, avoiding shaking during the sliding movement of the tooth plate 63, which causes the tooth plate 63 to loosen, and improves the sliding stability of the tooth plate 63.

[0033] The working principle and usage process of the present invention are as follows: when in use, the patient puts the sole of the foot into the limiting belt 5 and places it on the top of the foot pedal 4 when exercising, and starts the motor 61. The motor 61 drives the gear 62 to rotate, and the gear 62 drives the front tooth plate 63 to move to the left. At the same time, the gear 62 drives the rear tooth plate 63 to move to the right, and the tooth plate 63 drives the slider 3 and the foot pedal 4 to move to the side away from the motor 61. The foot pedal 4 drives the patient's feet to move. During the movement of the patient's feet, the knee joints are constantly opened and closed for exercise, thereby having the advantage of efficiently restoring the knee joint.

[0034] To sum up: the device for exercising the active flexion and extension function of the knee joint after total knee replacement, through the coordinated use of the box 1, the slide 2, the slider 3, the foot pedal 4, the limiting belt 5 and the movable mechanism 6, solves the problem that there is only one foot pedal on the device, and when the patient has undergone total knee replacement on both legs, it is impossible to exercise and recover both knees at the same time. The foot pedal is driven to move by winding the pull rope by the winding roller. The winding roller is located directly above the foot pedal. When the patient's foot drives the calf and knee joint to move, the patient's calf is likely to touch the winding roller, and the winding roller will block the patient's calf from continuing to move, resulting in the patient's knee joint opening and closing angle being restricted, thereby reducing the patient's knee joint recovery effect.

[0035] 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 actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although the 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 present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for exercising the active flexion and extension function of the knee joint after total knee replacement surgery, comprising a box (1), characterized in that: The front and rear sides of the top of the box (1) are both provided with a slide groove (2), a slider (3) is provided inside the slide groove (2), the top of the slider (3) is fixedly connected to a foot pedal (4), the top of the foot pedal (4) is fixedly connected to a limiting belt (5), a movable mechanism (6) is provided inside the box (1), the movable mechanism (6) includes a motor (61), the bottom of the motor (61) is fixedly connected to the bottom of the inner wall of the box (1), the output end of the motor (61) is fixedly connected to a gear (62), the front and rear sides of the gear (62) are both meshed with a tooth plate (63), a slide rod (64) is provided inside the tooth plate (63), the surface of the slide rod (64) is fixedly connected to the inner wall of the box (1), and the bottom of the slider (3) is fixedly connected to the top of the tooth plate (63).

2. The knee joint active flexion and extension function training device after total knee replacement surgery according to claim 1, characterized in that: A weight-reducing groove (7) is provided on the front side of the foot pedal (4), the weight-reducing groove (7) is located at the top of the box body (1), and the weight-reducing groove (7) is located at the bottom of the limiting belt (5).

3. The knee joint active flexion and extension function training device after total knee replacement surgery according to claim 1, characterized in that: Both sides of the slider (3) are fixedly connected with shielding cloths (8), the surface of the shielding cloths (8) is fixedly connected to the inner wall of the slide groove (2), and the shielding cloths (8) are located at the bottom of the foot pedal (4).

4. The knee joint active flexion and extension function training device after total knee replacement surgery according to claim 1, characterized in that: The top of the foot pedal (4) is fixedly connected with a convex point (9), the number of the convex points (9) is several, and the convex points (9) are distributed at equal distances.

5. The knee joint active flexion and extension function training device after total knee replacement surgery according to claim 1, characterized in that: The surface of the output end of the motor (61) is covered with a stabilizing sleeve (10), the top of the stabilizing sleeve (10) is fixedly connected to the top of the inner wall of the box body (1), and the shape of the stabilizing sleeve (10) is circular.

6. The knee joint active flexion and extension function training device after total knee replacement surgery according to claim 1, characterized in that: Pulleys (11) are provided on the front and rear sides of the tooth plate (63), and the pulleys (11) are hinged to the inner wall of the box body (1) through a connecting block and a pin shaft. There are a plurality of pulleys (11), and the pulleys (11) are distributed at equal distances.

Images