Limb rehabilitation exercise device for preventing muscular atrophy of long-term bedridden patient

Abstract

The invention discloses a limb rehabilitation exercise device for preventing muscular atrophy of a long-term bedridden patient. The device comprises a base, a thigh supporting plate, a shank supporting plate, an extorsion correcting mechanism and a dorsiflexion exercising mechanism. The thigh supporting plate is rotationally connected with the base, the shank supporting plate moves on a base sliding rail through a sliding seat, the horizontal supporting rods on the two sides stretch out and draw back at equal length to drive the thigh and the shank supporting plate to rotate relatively, and passive flexion movement of knee joints is achieved. The extorsion correction mechanism adjusts the angle of a U-shaped plate through an inclined supporting rod and corrects foot abduction; the dorsiflexion exercising mechanism adopts a cam-spring linkage design, and a driving piece drives a cam to push a front foot treading groove to rotate in a reciprocating mode, so that dorsiflexion training is completed. The device integrates knee joint flexion, dorsiflexion movement and foot abduction correction functions, safety is improved through the baffle and the restraint strap, the problem that an existing device is single in function is solved, and the device is suitable for lower limb rehabilitation treatment of long-term bedridden patients and has the advantages of being compact in structure, convenient to operate and comprehensive in rehabilitation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of medical rehabilitation equipment, and particularly relates to a limb rehabilitation exercise device for preventing muscle atrophy in long-term bedridden patients. Background Art

[0002] For long-term bedridden patients, due to limited limb movement, muscle atrophy is extremely likely to occur. Among them, lower limb muscle atrophy is particularly common. Dorsiflexion movement of the foot and flexion movement of the knee joint are crucial for maintaining lower limb muscle strength and joint mobility. At the same time, some patients may also be accompanied by the problem of foot abduction, which not only affects the rehabilitation process of the patients, but also may hinder the subsequent recovery of walking function.

[0003] Currently, the existing rehabilitation exercise devices on the market often have relatively single functions, and cannot simultaneously meet the comprehensive needs of patients for passive dorsiflexion movement of the foot, flexion movement of the knee joint, and correction of foot abduction. Moreover, they are complex to operate and the patient experience is not good.

[0004] Therefore, it is of great practical significance to develop a rehabilitation exercise device that can assist long-term bedridden patients in performing passive dorsiflexion movement of the foot and flexion movement of the knee joint, while correcting foot abduction. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a limb rehabilitation exercise device for preventing muscle atrophy in long-term bedridden patients. The rehabilitation exercise device is provided with an external rotation correction mechanism and a dorsiflexion exercise mechanism, and by driving the relative rotation of the thigh support plate and the calf support plate, it assists long-term bedridden patients in performing passive dorsiflexion movement of the foot and flexion movement of the knee joint, while correcting foot abduction, promoting the recovery of the lower limb muscles of the patients and the improvement of joint function;

[0006] In order to achieve the above technical purpose, the present invention is realized through the following technical solutions:

[0007] A limb rehabilitation exercise device for preventing muscle atrophy in long-term bedridden patients, comprising: a base, a thigh support plate, a calf support plate, an external rotation correction mechanism, and a dorsiflexion exercise mechanism;

[0008] The bottom end of the thigh support plate is rotatably connected to one end of the base, and the top end is rotatably connected to the top end of the calf support plate; the bottom end of the calf support plate is rotatably connected with a sliding seat A; the sliding seat A slides linearly on the base; a horizontal support rod is installed on each side of the thigh support plate and the calf support plate; both ends of a single horizontal support rod are respectively rotatably connected to the two bottom ends of the thigh support plate and the calf support plate that are far away from each other; the two horizontal support rods are parallel to each other and drive the thigh support plate and the calf support plate to rotate relative to each other through equal-length telescoping;

[0009] The external rotation correction mechanism includes a U-shaped plate and an inclined strut; the inclined strut is a telescopic rod, the bottom end of which is rotatably connected to one side of the lower leg support plate, and the top end of which is rotatably connected to one outer wall of the U-shaped plate; the U-shaped plate is rotatably installed on the upper surface of the lower leg support plate and is located at one end far from the thigh support plate; the dorsiflexion exercise device is slidably installed in the U-shaped plate;

[0010] The dorsiflexion exercise mechanism includes: a mounting frame, a front foot tread groove, a cam, a spring, and a driving member; the mounting frame slides up and down in the U-shaped plate; the front foot tread groove is rotatably installed inside the mounting frame on the side close to the thigh support plate, and the opening faces the thigh support plate; one end of the spring is fixedly connected to the lower part of the back surface of the front foot tread groove, and the other end is fixedly connected to the inner wall of the mounting frame and is located below the cam; the driving member is fixedly installed on the mounting frame and is located above the spring, and outputs a rotary motion to drive the cam to rotate; the cam is a disk-shaped cam, and the contour line thereof fits the outer wall of the front foot tread groove far from the thigh support plate;

[0011] Further, baffles are fixedly connected to both sides of the upper surfaces of the thigh support plate and the lower leg support plate; a restraint strap is fixedly connected to the front foot tread groove;

[0012] Further, two parallel slide rails A are provided on the base; the slide rail A is a straight rail, symmetrically located on the base, and is located on the side of the base far from the thigh support plate; the sliding seat A is adapted to the slide rail A;

[0013] Further, a shaft tube is fixedly connected to the top end of the sliding seat A; a rotating shaft is inserted through the shaft tube; the rotating shaft passes through the bottom end of the lower leg support plate; both ends of the rotating shaft are rotatably connected to the same ends of the two horizontal struts; the horizontal strut is a telescopic rod that can be extended and retracted in the horizontal direction;

[0014] Further, the bottom end of the inclined strut is located at one end of one side of the lower leg support plate, and there is a gap between it and the U-shaped plate; the rotation plane of the inclined strut is perpendicular to the plane where the lower leg support plate is located;

[0015] Further, a slide rail B is fixedly connected to each of the two inner walls of the U-shaped plate; the two slide rails B are symmetrical; the track direction of the slide rail B is perpendicular to the plane where the lower leg support plate is located; the mounting frame is a C-shaped plate, and the opening faces the thigh support plate; an extension plate is fixedly connected to the top end surface; sliding seats B are fixedly connected to both sides of the extension plate; the two sliding seats B are at the same height and are adapted to the slide rail B; the driving member and the cam are both located between the two extension plates;

[0016] Further, rotation sleeves are fixedly connected to the closer sides of the two sliding seats B respectively; a rotation block is fixedly connected to each of the two outer sides of the outer wall of the front foot stepping groove; the rotation block is sleeved in the rotation sleeve and rotates relative to the sliding seat B.

[0017] Further, a recess formed by concave molding is provided on the side wall of the mounting bracket away from the thigh support plate; the recess is located below the cam for the cam to pass through.

[0018] Further, the rotation block is located below the rotation center of the cam in the vertical direction.

[0019] The beneficial effects of the present invention are as follows:

[0020] For a limb rehabilitation exercise device for preventing muscle atrophy in long-term bedridden patients provided by the present invention, when the horizontal support rod performs isometric telescoping, since the two ends of the horizontal support rod are respectively rotatably connected to the thigh support plate and the calf support plate, and the sliding seat A slides linearly on the slide rail A of the base, the thigh support plate and the calf support plate can rotate relative to each other, thereby realizing the flexion movement of the patient's knee joint; by adjusting the length of the diagonal support rod, the angle of the U-shaped plate relative to the calf support plate is changed, so as to perform external rotation correction on the patient's foot and improve the condition of foot abduction; the driving member works, and the output rotary motion drives the cam to rotate. Since the contour line of the cam fits the outer wall of the front foot stepping groove away from the thigh support plate, during the rotation of the cam, the front foot stepping groove will be pushed to rotate around the connection point of the rotation block and the rotation sleeve, realizing the dorsiflexion movement of the foot. At the same time, the spring plays a role in buffering and resetting, so that the front foot stepping groove can be reset after the cam rotates and disengages.

[0021] The present invention can simultaneously assist long-term bedridden patients in performing passive dorsiflexion movement of the foot and flexion movement of the knee joint, comprehensively exercising the lower limb muscles and promoting muscle recovery. The setting of the external rotation correction mechanism can effectively correct the foot abduction problem of the patient, improve the lower limb posture of the patient, and lay a good foundation for subsequent rehabilitation treatment. The setting of a variety of auxiliary structures, such as baffles and restraint belts, improves the safety and comfort of the patient during use. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is an overall structural schematic diagram of a perspective of the present invention;

[0024] Figure 2It is a schematic diagram of the overall structure from another perspective of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure when the thigh support plate and the calf support plate of the present invention rotate for the lower limbs to be laid flat;

[0026] Figure 4 It is a schematic diagram of the structure of the dorsiflexion exercise mechanism of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the front foot tread groove of the present invention;

[0028] In the drawings, the list of components represented by each reference numeral is as follows:

[0029] 1 - Base, 11 - Slide rail A,

[0030] 2 - Thigh support plate, 21 - Baffle, 22 - Horizontal support rod,

[0031] 3 - Calf support plate, 32 - Slide seat A, 321 - Axle tube, 322 - Rotating shaft,

[0032] 4 - External rotation correction mechanism, 41 - U - shaped plate, 411 - Slide rail B, 42 - Diagonal support rod,

[0033] 5 - Dorsiflexion exercise mechanism, 51 - Mounting frame, 511 - Extension plate, 512 - Slide seat B, 513 - Rotating sleeve, 514 - Notch, 52 - Front foot tread groove, 521 - Restraint strap, 522 - Rotating block, 53 - Cam, 54 - Spring, 55 - Driving member. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment

[0036] Please refer to Figures 1-5, in this embodiment, a limb rehabilitation exercise device for preventing muscle atrophy in long-term bedridden patients includes: a base 1, a thigh support plate 2, a calf support plate 3, an external rotation correction mechanism 4, and a dorsiflexion exercise mechanism 5; the base 1 is the basic placement component of this device, which is placed on the bed during use, and the other components of this device are directly or indirectly installed on it, and the base 1 finally bears the gravity of the other components of the device and the lower limbs of the patient; the thigh support plate 2 and the calf support plate 3 are structures for placing the patient's thigh and calf respectively, and restraint straps can be set above the two to prevent the limbs from falling in extreme cases; the external rotation correction mechanism 4 is a structure that supports and pulls the sole of the foot from one side to keep the limb in a correct position and correct foot external rotation; the dorsiflexion exercise mechanism 5 reciprocally supports the front sole of the patient through the combined action of a spring and a cam, enabling the patient to perform passive dorsiflexion movement;

[0037] In this embodiment, the bottom end of the thigh support plate 2 is rotatably connected to one end of the base 1, and the top end is rotatably connected to the top end of the calf support plate 3; a sliding seat A 32 is rotatably connected to the bottom end of the calf support plate 3; the sliding seat A 32 linearly slides on the base 1; a horizontal support rod 22 is installed on both sides of the thigh support plate 2 and the calf support plate 3 respectively; both ends of a single horizontal support rod 22 are rotatably connected to the two bottom ends of the thigh support plate 2 and the calf support plate 3 that are far away from each other; the two horizontal support rods 22 are parallel to each other and drive the thigh support plate 2 and the calf support plate 3 to rotate relative to each other through equal-length telescoping;

[0038] The connection position of the thigh support plate 2 and the calf support plate 3 is the middle of the whole, and one end of the two simulates the knee joint of the human body, which is located in the middle of the limb; the rotational connection between the thigh support plate 2 and the base 1 simulates the thigh rotation of the human pelvic hip joint; the rotational connection between the calf support plate 3 and the sliding seat 32, and the sliding of the sliding seat 32 on the base simulate the sliding of the human heel on the bed when the lower limb is flexed; the horizontal support rod 22 is a telescopic rod, and its telescoping provides power for the passive flexion movement of the lower limb, simulating the movement of the human heel approaching and moving away from the buttocks in the lying state;

[0039] In this embodiment, the external rotation correction mechanism 4 includes a U-shaped plate 41 and a diagonal brace 42; the diagonal brace 42 is a telescopic rod, the bottom end of which is rotatably connected to one side of the lower leg support plate 3, and the top end is rotatably connected to the outer wall of one side of the U-shaped plate 41; the U-shaped plate 41 is rotatably installed on the upper surface of the lower leg support plate 3 and is located at one end away from the thigh support plate 2; the dorsiflexion exercise device is slidably installed in the U-shaped plate 41; the diagonal brace 42 is the main pressure-bearing component for overcoming the external rotation force of the patient's foot sole, and is a telescopic rod that actively extends and contracts, and can be fixed at a certain length after extension and contraction; the extension and contraction of the diagonal brace 42 cooperate with the following dorsiflexion exercise mechanism to complete passive dorsiflexion movement and foot sole circumduction movement, that is, the so-called ankle pump movement;

[0040] In this embodiment, the dorsiflexion exercise mechanism includes: a mounting bracket 51, a front foot tread groove 52, a cam 53, a spring 54, and a driving member 55; the mounting bracket 51 slides up and down in the U-shaped plate 41; the front foot tread groove 52 is rotatably installed inside the mounting bracket 51 on the side close to the thigh support plate 2, and the opening faces the thigh support plate 2; one end of the spring 54 is fixedly connected to the lower part of the back of the front foot tread groove 52, and the other end is fixedly connected to the inner wall of the mounting bracket 51 and is located below the cam 53; the driving member 55 is fixedly installed on the mounting bracket 51 and is located above the spring 54, and outputs a rotary motion to drive the cam 53 to rotate; the cam 53 is a disc-shaped cam, and the contour line fits the outer wall of the front foot tread groove 52 away from the thigh support plate 2;

[0041] The principle of the dorsiflexion exercise mechanism of the present invention is that a spring is arranged at the bottom end position of the front foot sole, and a cam is arranged at the top end position of the front foot sole. The cam provides intermittent thrust to push the dorsiflexion, and the spring resets the front foot tread groove 52; thus, the reciprocating work is carried out for reciprocating dorsiflexion exercise;

[0042] In this embodiment, baffles 21 are fixedly connected to both sides of the upper surfaces of the thigh support plate 2 and the lower leg support plate 3; a restraint belt 521 is fixedly connected to the front foot tread groove 52; the restraint belt 521 is to prevent the foot sole from falling out of the front foot tread groove 52 in extreme cases, and to make the patient's foot sole closely follow the movement of the front foot tread groove 52;

[0043] In this embodiment, two parallel slide rails A 11 are provided on the base 1; the slide rails A 11 are straight rails, symmetrically located on the base 1, and are located on the side of the base 1 away from the thigh support plate 2; the sliding seat A 32 is adapted to the slide rails A 11; the sliding of the sliding seat A 11 on the base is driven by the extension and contraction of the horizontal support rod 22;

[0044] In this embodiment, a shaft tube 321 is fixedly connected to the top end of the sliding seat A 32; a rotating shaft 322 is inserted into the shaft tube 321; the rotating shaft 322 passes through the bottom end of the calf support plate 3; both ends of the rotating shaft 322 are rotatably connected to the same ends of two horizontal support rods 22; the horizontal support rod 22 is a telescopic rod that actively expands and contracts in the horizontal direction; the specific structure of the horizontal support rod 22 is a mature technical means in the prior art, and those skilled in the art can flexibly select telescopic rods that actively expand and contract, including electric push rods, hydraulic rods, pneumatic push rods, etc., according to its function of horizontal expansion and contraction and fixed length after expansion; the specific structure of the diagonal support rod 42 is also the same as that of the horizontal support rod 22, and can be specifically and flexibly selected according to the function.

[0045] In this embodiment, the bottom end of the diagonal support rod 42 is located at one end of the side of the calf support plate 3, and there is a gap between it and the U-shaped plate 41; the rotation plane of the diagonal support rod 42 is perpendicular to the plane where the calf support plate 3 is located, that is, the function of the diagonal support rod 42 is only to drive the U-shaped plate 41 to rotate, and at the same time, both the U-shaped plate 41 and the diagonal support rod 42 move with the calf support plate 3.

[0046] In this embodiment, a slide rail B 411 is fixedly connected to each of the inner walls on both sides of the U-shaped plate 41; the two slide rails B 411 are symmetrical; the track direction of the slide rail B 411 is perpendicular to the plane where the calf support plate 3 is located; the mounting bracket 51 is a C-shaped plate with an opening facing the thigh support plate 2; an extension plate 511 is fixedly connected to the top end face; slide seats B 512 are fixedly connected to both sides of the extension plate 511; the two slide seats B 512 are at the same height and are adapted to the slide rail B 411; both the driving member 55 and the cam 53 are located between the two extension plates 511; the U-shaped plate 41 does not directly contact the human body, and it indirectly drives the patient's foot sole to rotate through the front foot tread groove 52, and the patient's foot sole rotates under the drive of the front foot tread groove 52.

[0047] In this embodiment, rotating sleeves 513 are fixedly connected to the closer sides of the two slide seats B 512 respectively; rotating blocks 522 are fixedly connected to both sides of the outer wall of the front foot tread groove 52; the rotating blocks 522 are sleeved in the rotating sleeves 513 and rotate relative to the slide seats B 512.

[0048] In this embodiment, a recessed notch 514 is formed on the side wall of the mounting bracket 51 away from the thigh support plate 2; the notch 514 is located below the cam 53 to allow the cam 53 to pass through and provide space for the rotation of the cam 53.

[0049] In this embodiment, the rotating block 522 is located below the rotation center of the cam 53 in the vertical direction. The rotating block 522 is the rotation center of the front foot tread groove 52. In order to enable the cam 53 to fully function and drive the rotation of the front foot tread groove 52, the cam 53 needs to be located in the upper half of the front foot tread groove 52, that is, above the rotating block 522;

[0050] In this embodiment, a method for using a limb rehabilitation exercise device for preventing muscle atrophy in long-term bedridden patients is as follows: The patient lies in a suitable position, places the thigh on the thigh support plate 2, places the calf on the calf support plate 3, and uses the baffle 21 to prevent the limb from slipping; places the foot in the front foot tread groove 52, fastens the restraint strap 521, and fixes the foot; adjusts the length of the diagonal strut 42 according to the actual situation of the patient to correct the foot abduction; starts the driving member 55, and the driving member 55 drives the cam 53 to rotate to start the dorsiflexion movement of the foot. At the same time, the telescopic movement of the horizontal support rod 22 can be controlled as needed to perform the flexion movement of the knee joint;

[0051] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A limb rehabilitation training device for preventing muscle atrophy in long-term bedridden patients, characterized in that: include: Base, thigh support plate, calf support plate, external rotation correction mechanism, dorsiflexion training mechanism; The bottom end of the thigh support plate is rotatably connected to one end of the base, and the top end is rotatably connected to the top end of the calf support plate; the bottom end of the calf support plate is rotatably connected to a sliding seat armor; the sliding seat armor slides linearly on the base; a horizontal support rod is respectively installed on both sides of the thigh support plate and the calf support plate; the two ends of the single horizontal support rod are respectively rotatably connected to the two bottom ends of the thigh support plate and the calf support plate that are far away from each other; the two horizontal support rods are parallel, and the thigh support plate and the calf support plate are driven to rotate relative to each other through equal length telescopic movement; The external rotation correction mechanism includes a U-shaped plate and an oblique support rod; the oblique support rod is a telescopic rod, the bottom end of which is rotatably connected to one side of the calf support plate, and the top end is rotatably connected to an outer wall of one side of the U-shaped plate; the U-shaped plate is rotatably mounted on the upper surface of the calf support plate and is located at an end away from the thigh support plate; the dorsiflexion exercise device is slidably mounted in the U-shaped plate; The dorsiflexion exercise mechanism includes: a mounting frame, a front foot-treading groove, a cam, a spring, and a driving member; the mounting frame slides up and down in the U-shaped plate; the front foot-treading groove is rotatably mounted in the mounting frame on the side close to the thigh support plate, and its opening faces the thigh support plate; one end of the spring is fixedly connected to the lower part of the back side of the front foot-treading groove, and the other end is fixedly connected to the inner wall of the mounting frame and is located below the cam; the driving member is fixedly mounted on the mounting frame and is located above the spring, outputs rotary motion and drives the cam to rotate; the cam is a disc-shaped cam, and its contour line is in contact with the outer wall of the front foot-treading groove away from the thigh support plate.

2. According to claim 1, a limb rehabilitation exercise device for preventing muscle atrophy in long-term bedridden patients, characterized in that: Baffles are fixedly connected to both sides of the upper surfaces of the thigh support plate and the calf support plate; and a restraint belt is fixedly connected to the front foot step groove.

3. The limb rehabilitation exercise device for preventing muscle atrophy in long-term bedridden patients according to claim 1, characterized in that: The base is provided with two parallel slide rails; the slide rails are straight rails, symmetrically positioned on the base, and located on the side of the base away from the thigh support plate; the sliding seat is adapted to the slide rails.

4. The limb rehabilitation exercise device for preventing muscle atrophy in long-term bedridden patients according to claim 1, characterized in that: The top of the sliding seat armor is fixedly connected with an axle tube; a rotating shaft is inserted into the axle tube; the rotating shaft passes through the bottom end of the calf support plate; the two ends of the rotating shaft are respectively rotatably connected to the same ends of the two horizontal support rods; the horizontal support rods are telescopic rods that can be extended and retracted in the horizontal direction.

5. The limb rehabilitation exercise device for preventing muscle atrophy in long-term bedridden patients according to claim 1, characterized in that: The bottom end of the oblique support rod is located at one end of the calf support plate, and there is a gap between the bottom end and the U-shaped plate; the rotation plane of the oblique support rod is perpendicular to the plane where the calf support plate is located.

6. The limb rehabilitation exercise device for preventing muscle atrophy in bedridden patients according to claim 1, characterized in that: A slide rail B is fixedly connected to the inner walls on both sides of the U-shaped plate; the two slide rails B are symmetrical; the track direction of the slide rail B is perpendicular to the plane where the calf support plate is located; the mounting frame is a U-shaped plate with an opening facing the thigh support plate; an extension plate is fixedly connected to the top end surface; a sliding seat B is fixedly connected to both sides of the extension plate; the two sliding seats B are of the same height and are compatible with the slide rail B; the driving member and the cam are both located between the two extension plates.

7. A limb rehabilitation exercise device for preventing muscle atrophy in long-term bedridden patients according to claim 6, characterized in that: The adjacent sides of the two sliding seats B are respectively fixedly connected with a rotating sleeve; the outer walls of the front footrest grooves are respectively fixedly connected with a rotating block; the rotating block is sleeved in the rotating sleeve and rotates relative to the sliding seat B.

8. The limb rehabilitation exercise device for preventing muscle atrophy in long-term bedridden patients according to claim 1, characterized in that: A concave notch is provided on the side wall of the mounting frame away from the thigh support plate; the notch is located below the cam for the cam to pass through.

9. The limb rehabilitation exercise device for preventing muscle atrophy in long-term bedridden patients according to claim 6, characterized in that: The rotating block is located below the rotation center of the cam in the vertical direction.

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