An angle exercise assisting device after arthroplasty

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, concretely relates to a joint replacement postoperative angle exercise auxiliary instrument, including the seat board, one side of seat board is equipped with the backrest, the lower surface of seat board is equipped with two graduated sliding rails, the graduated sliding rail is equipped with the limit stop adjusting plate, the upside of limit stop adjusting plate is equipped with the thigh support plate and the shank support plate, the other end of thigh support plate is movably connected with one end of shank support plate, the side of seat board is equipped with the drive turntable. The utility model adopts the manual structure, does not need the complicated electronic control and drive system, greatly reduces the equipment cost, makes its price far lower than CPM machine, is suitable for patient to purchase and use at home after being discharged from hospital, is convenient for patient to carry out long -term rehabilitation exercise, simultaneously, the angle of the device adjusts can be according to the different recovery stage and individual difference of patient, the flexion angle of knee joint is adjusted flexibly, makes exercise more individualized and scientific and reasonable, improves the effect and safety of rehabilitation exercise.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to an auxiliary device for angle exercise after joint replacement surgery. Background Technology

[0002] In the rehabilitation process following orthopedic joint replacement surgery, the recovery of knee joint function is crucial. While the CPM (Continuous Passive Motion) machine, commonly used in hospital rehabilitation, can achieve passive flexion and extension training of the knee joint, it has significant drawbacks:

[0003] First, the equipment is expensive, making it unaffordable for many patients, especially given the significant financial burden of continuing its use at home after discharge. Second, it cannot perform knee extension exercises, limiting its functionality. Third, it primarily provides passive flexion and extension training, failing to effectively guide patients in active joint function exercises, which are crucial for the comprehensive recovery of joint function and the enhancement of muscle strength. Therefore, there is an urgent need to design an affordable, home-use assistive device for knee extension exercises, capable of both passive flexion and extension exercises assisted by family members and self-administered by patients, as well as an independent active function exercise device for post-joint replacement surgery. Utility Model Content

[0004] The purpose of this invention is to provide an auxiliary device for angle exercise after joint replacement surgery, which can solve the above-mentioned problems.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] An auxiliary device for angle exercise after joint replacement surgery includes a seat plate. One side of the seat plate has a backrest, and the other side has a hinged seat. Two graduated slide rails are provided on the lower surface of the seat plate, and a limit adjustment plate is provided on each slide rail. The limit adjustment plate slides in slidable engagement with the slide rails. A thigh support plate and a calf support plate are provided on the upper side of the limit adjustment plate. One end of the thigh support plate is movably connected to one side surface of the hinged seat, and the other end of the thigh support plate is movably connected to one end of the calf support plate. A drive turntable is provided on the side of the seat plate, and a lifting rod is provided on the lower side of the seat plate. The upper end of the lifting rod is fixedly connected to the lower surface of the seat plate, and the lower end of the lifting rod has a base plate.

[0007] Preferably, the underside of the backrest is provided with an elastic plate, the elastic plate has a C-shaped cross-section, one end of the elastic plate is connected to the bottom of one side surface of the backrest, and the other end of the elastic plate is fixedly connected to the lower surface of the seat plate.

[0008] Preferably, one side surface of the hinge seat is fixedly connected to one side surface of the seat plate, the hinge seat is provided with a circular through hole, one side surface of the thigh support plate is provided with a transmission sprocket, the other side of the thigh support plate is provided with a connecting shaft, the connecting shaft passes through the circular through hole in the hinge seat, one end of the connecting shaft is fitted with a transmission belt, one side surface of the thigh support plate is provided with a transmission gear, one side surface of the transmission gear is movably connected to one side surface of the thigh support plate, the other side surface of the transmission gear is provided with a circular protrusion, the other end of the transmission belt is fitted onto the circular protrusion on the transmission gear, the thigh support plate is provided with a thigh pad, and the thigh pad is provided with Velcro straps on both sides.

[0009] Preferably, one end of the calf support plate is provided with a plurality of teeth, and the toothed end of the calf support plate meshes with a transmission gear. One end of the calf support plate is movably connected to one end of the thigh support plate. The other end of the calf support plate is provided with a pedal, and a locking plate is provided on the lower side of the pedal. One surface of the locking plate is fixedly connected to one surface of the calf support plate. The calf support plate is provided with a calf pad, and Velcro straps are provided on both sides of the calf pad.

[0010] Preferably, the base plate is provided with mounting seats on both sides, and each of the two mounting seats is provided with two threaded slots. A bracket is provided on one side of the mounting seat, and the bracket is connected to the mounting seat by two bolts. A small sprocket is provided on one side of the drive turntable, and one side surface of the small sprocket is movably connected to one side surface of the bracket. A transmission chain is sleeved on the small sprocket, and the other end of the transmission chain is sleeved on the transmission sprocket.

[0011] Preferably, the limiting adjustment plate is provided with two threaded through holes, and two adjusting bolts are provided in the two threaded through holes on the limiting adjustment plate. The scale slide rail is provided with several scale strips.

[0012] The technical effects achieved by this utility model are as follows:

[0013] This invention relates to an auxiliary device for angle exercise after joint replacement surgery. The device is manually operated, eliminating the need for complex electronic control and drive systems, significantly reducing equipment costs and making it much cheaper than a CPM machine. This makes it suitable for patients to purchase and use at home after discharge, facilitating long-term rehabilitation exercises. Furthermore, this device not only enables passive flexion and extension exercises of the knee joint (which can be performed with family assistance or by the patient themselves; by adjusting the rotation ratio, the user can perform prolonged exercises with minimal force), but also guides patients in voluntary active joint function exercises. This helps enhance muscle strength and joint mobility, promoting comprehensive joint function recovery. By changing the angle limiting plate, knee extension exercises and flexion and extension exercises at different angles can be performed, overcoming the limitation of existing CPM machines that cannot perform extension exercises. The angle adjustment of this device can flexibly adjust the flexion and extension angles of the knee joint according to the patient's different recovery stages and individual differences, making the exercises more personalized and scientifically sound, improving the effectiveness and safety of rehabilitation exercises. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an auxiliary device for angle exercise after joint replacement surgery according to this utility model;

[0015] Figure 2 This is a three-dimensional structural diagram of an auxiliary device for angle exercise after joint replacement surgery, which is another perspective of this utility model.

[0016] Figure 3 This is a schematic diagram of the inside of the thigh support plate in an auxiliary device for angle exercise after joint replacement surgery according to this utility model.

[0017] Figure 4 This is a utility model Figure 3 A magnified schematic diagram of the local structure at point A in the middle.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 1. Seat plate; 101. Mounting base; 102. Bracket; 2. Backrest plate; 201. Elastic plate; 3. Hinge seat; 4. Scale slide rail; 401. Scale strip; 5. Limit adjustment plate; 501. Adjusting bolt; 6. Thigh support plate; 601. Drive sprocket; 602. Connecting shaft; 603. Drive belt; 604. Drive gear; 605. Thigh pad; 7. Lower leg support plate; 701. Pedal; 702. Positioning plate; 703. Lower leg pad; 8. Drive turntable; 801. Small sprocket; 802. Drive chain; 9. Lifting rod; 901. Base plate; 11. Velcro strap. Detailed Implementation

[0020] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0021] like Figures 1-4 As shown, an auxiliary device for angle exercise after joint replacement surgery includes a seat plate 1, a backrest 2 on one side of the seat plate 1, a hinge seat 3 on the other side of the seat plate 1, two scale slide rails 4 on the lower surface of the seat plate 1, a limit adjustment plate 5 on the scale slide rails 4, the limit adjustment plate 5 slidingly engaging with the scale slide rails 4, a thigh support plate 6 and a calf support plate 7 on the upper side of the limit adjustment plate 5, one end of the thigh support plate 6 being movably connected to one side surface of the hinge seat 3, and the other end of the thigh support plate 6 being movably connected to one end of the calf support plate 7, a drive turntable 8 on the side of the seat plate 1, and a lifting rod 9 on the lower side of the seat plate 1, the upper end of the lifting rod 9 being fixedly connected to the lower surface of the seat plate 1, and a base plate 901 at the lower end of the lifting rod 9;

[0022] like Figures 1-4 As shown, the seat 1 provides a comfortable seat for the user, the backrest 2 supports the user's waist, the hinged seat 3 connects the seat 1 and the thigh support plate 6, the scale slide rail 4 provides a sliding track for the limit adjustment plate 5, the limit adjustment plate 5 supports the thigh support plate 6 and the calf support plate 7, the thigh support plate 6 supports the user's thighs, the calf support plate 7 supports the user's calves, the drive turntable 8 provides auxiliary power for rehabilitation exercises, the lifting rod 9 allows the device to be adjusted up and down to accommodate users of different heights, and the base plate 901 supports and fixes the lifting rod 9.

[0023] like Figures 1-4 As shown, the lower side of the backrest 2 is provided with an elastic plate 201. The cross-section of the elastic plate 201 is a C-shaped structure. One end of the elastic plate 201 is connected to the bottom of one side surface of the backrest 2, and the other end of the elastic plate 201 is fixedly connected to the lower surface of the seat plate 1.

[0024] like Figures 1-4 As shown, the elastic plate 201 connects the seat plate 1 and the backrest 2, allowing the human body to recline on the backrest 2 when sitting on the seat plate 1. At the same time, the backrest 2 provides support for the human body's waist through the elastic plate 201, allowing the user to sit comfortably for a long time.

[0025] like Figures 1-4As shown, one side surface of the hinge seat 3 is fixedly connected to one side surface of the seat plate 1. The hinge seat 3 is provided with a circular through hole. One side surface of the thigh support plate 6 is provided with a transmission sprocket 601. The other side of the thigh support plate 6 is provided with a connecting shaft 602. The connecting shaft 602 passes through the circular through hole on the hinge seat 3. One end of the connecting shaft 602 is fitted with a transmission belt 603. One side surface of the thigh support plate 6 is provided with a transmission gear 604. One side surface of the transmission gear 604 is movably connected to one side surface of the thigh support plate 6. The other side surface of the transmission gear 604 is provided with a circular protrusion. The other end of the transmission belt 603 is fitted onto the circular protrusion on the transmission gear 604. The thigh support plate 6 is provided with a thigh pad 605. The thigh pad 605 is provided with Velcro straps 11 on both sides.

[0026] like Figures 1-4 As shown, the thigh support plate 6 is movably connected to the hinge seat 3 via a connecting shaft 602. The connecting shaft 602 passes through the thigh support plate 6 and connects to one side surface of the transmission sprocket 601. When the transmission sprocket 601 rotates, the connecting shaft 602 rotates simultaneously, causing the transmission belt 603 to rotate, which in turn causes the transmission gear 604 to rotate.

[0027] like Figures 1-4 As shown, one end of the calf support plate 7 is provided with several teeth, and the toothed end of the calf support plate 7 meshes with the transmission gear 604. One end of the calf support plate 7 is movably connected to one end of the thigh support plate 6. The other end of the calf support plate 7 is provided with a pedal 701. A locking plate 702 is provided on the lower side of the pedal 701. One surface of the locking plate 702 is fixedly connected to one surface of the calf support plate 7. A calf pad 703 is provided on the calf support plate 7. Velcro straps 11 are provided on both sides of the calf pad 703.

[0028] like Figures 1-4 As shown, when the transmission gear 604 rotates, it drives one end of the lower leg support plate 7 to rotate through the teeth on the lower leg support plate 7, causing the connection between the thigh support plate 6 and the lower leg support plate 7 to rise or fall. The limit adjustment plate 5 limits the locking plate 702, so that it can only rise to a fixed height.

[0029] like Figures 1-4As shown, mounting seats 101 are provided on both sides of the base plate 1. Each mounting seat 101 has two threaded slots. A bracket 102 is provided on one side of the mounting seat 101. The bracket 102 is connected to the mounting seat 101 by two bolts. A small sprocket 801 is provided on one side of the drive turntable 8. One side surface of the small sprocket 801 is movably connected to one side surface of the bracket 102. A transmission chain 802 is sleeved on the small sprocket 801. The other end of the transmission chain 802 is sleeved on the transmission sprocket 601.

[0030] like Figures 1-4 As shown, the mounting bases 101 on both sides of the seat plate 1 are provided to facilitate the left and right replacement of the device, so that the device can be adjusted according to different injured persons. At the same time, exercise devices can be installed on both sides for rehabilitation training of patients with both legs. The small sprocket 801 drives the transmission sprocket 601 to rotate. The small wheel drives the large wheel, which makes it easier for the user to rotate the device and provides power to the device.

[0031] like Figures 1-4 As shown, the limit adjustment plate 5 is provided with two threaded through holes, and two adjusting bolts 501 are provided in the two threaded through holes on the limit adjustment plate 5. The scale slide rail 4 is provided with several scale strips 401.

[0032] The working principle of this utility model is as follows: In actual use, the device is adjusted to a height convenient for the user to sit on via the lifting rod 9. The user sits on the seat 1, leaning against the backrest 2 in a semi-reclined position. The leg requiring rehabilitation is placed on the thigh support plate 6 and the calf support plate 7. The drive turntable 8 is rotated, and the drive turntable 8 drives the transmission sprocket 601 to rotate via the small sprocket 801 and the transmission chain 802. When the transmission sprocket 601 rotates, the connecting shaft 602 rotates simultaneously, causing the transmission gear 604 to rotate via the transmission belt 603. When the transmission gear 604 rotates, it drives one end of the calf support plate 7 to rotate via the teeth on the calf support plate 7, causing the connection between the thigh support plate 6 and the calf support plate 7 to rise or fall. The locking plate 702 is limited by one end of the limiting adjustment plate 5, allowing it to rise to a fixed height. The scale slide rail 4 is provided with several scale bars 401, which can be used to quickly limit the angle of the device.

[0033] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional methods in the field.

Claims

1. A joint replacement surgery angle exercise aid, characterized in that: The device includes a seat plate (1), a backrest (2) on one side of the seat plate (1), a hinge seat (3) on the other side of the seat plate (1), two scale slide rails (4) on the lower surface of the seat plate (1), a limit adjustment plate (5) on the scale slide rail (4), the limit adjustment plate (5) slidingly engaging with the scale slide rail (4), a thigh support plate (6) and a calf support plate (7) on the upper side of the limit adjustment plate (5), one end of the thigh support plate (6) being movably connected to one side surface of the hinge seat (3), the other end of the thigh support plate (6) being movably connected to one end of the calf support plate (7), a drive turntable (8) on the side of the seat plate (1), and a lifting rod (9) on the lower side of the seat plate (1), the upper end of the lifting rod (9) being fixedly connected to the lower surface of the seat plate (1), and a base plate (901) on the lower end of the lifting rod (9).

2. The joint replacement surgery angle exercise aid according to claim 1, characterized in that: The backrest (2) has an elastic plate (201) on its lower side. The elastic plate (201) has a C-shaped cross-section. One end of the elastic plate (201) is connected to the bottom of one side surface of the backrest (2), and the other end of the elastic plate (201) is fixedly connected to the lower surface of the seat plate (1).

3. The joint replacement surgery angle exercise aid device according to claim 2, characterized in that: One side surface of the hinge seat (3) is fixedly connected to one side surface of the seat plate (1). The hinge seat (3) is provided with a circular through hole. One side surface of the thigh support plate (6) is provided with a transmission sprocket (601). The other side of the thigh support plate (6) is provided with a connecting shaft (602). The connecting shaft (602) passes through the circular through hole on the hinge seat (3). One end of the connecting shaft (602) is fitted with a transmission belt (603). One side surface of the thigh support plate (6) is provided with a transmission gear (604). One side surface of the transmission gear (604) is movably connected to one side surface of the thigh support plate (6). The other side surface of the transmission gear (604) is provided with a circular protrusion. The other end of the transmission belt (603) is fitted onto the circular protrusion on the transmission gear (604). The thigh support plate (6) is provided with a thigh pad (605). The thigh pad (605) is provided with Velcro straps (11) on both sides.

4. The joint replacement surgery angle exercise aid according to claim 3, characterized in that: The lower leg support plate (7) has several teeth on one end, and the toothed end of the lower leg support plate (7) meshes with the transmission gear (604). One end of the lower leg support plate (7) is movably connected to one end of the thigh support plate (6). The other end of the lower leg support plate (7) is provided with a pedal (701). A locking plate (702) is provided on the lower side of the pedal (701). One surface of the locking plate (702) is fixedly connected to one surface of the lower leg support plate (7). The lower leg support plate (7) is provided with a lower leg pad (703). The lower leg pad (703) is provided with Velcro straps (11) on both sides.

5. The joint replacement surgery angle exercise aid according to claim 4, characterized in that: The seat plate (1) has mounting seats (101) on both sides. Each mounting seat (101) has two threaded slots. A bracket (102) is provided on one side of the mounting seat (101). The bracket (102) is connected to the mounting seat (101) by two bolts. A small sprocket (801) is provided on one side of the drive turntable (8). One side surface of the small sprocket (801) is movably connected to one side surface of the bracket (102). A transmission chain (802) is sleeved on the small sprocket (801). The other end of the transmission chain (802) is sleeved on the transmission sprocket (601).

6. The joint replacement surgery angle exercise aid according to claim 1, characterized in that: The limiting adjustment plate (5) is provided with two threaded through holes, and two adjusting bolts (501) are provided in the two threaded through holes of the limiting adjustment plate (5). The scale slide rail (4) is provided with several scale strips (401).

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