Lower limb training device for preventing VTE

Abstract

A lower limb training device for VTE prevention relates to the technical field of medical instruments and comprises a rack, the inner side of the rack is rotatably connected with a mounting box through a connecting shaft, the inner side of the mounting box is provided with a massage mechanism, the top of the mounting box is fixedly provided with a rubber baffle, and the contact surface of the rubber baffle and the legs of a patient is an arc-shaped surface. According to the lower limb training device for VTE prevention, the legs of a patient can be massaged in a rolling mode, it is avoided that when the lower limbs are trained, sliding friction is generated between the legs and the massaged portions, and the discomfort of the patient is increased; massage work and training of the lower limbs of the patient can be carried out in a linkage mode, the training modes are diversified, the training effect is good, meanwhile, an additional power mechanism does not need to be arranged, the use cost is reduced, the feet of the patient are conveniently fixed, the device is conveniently suitable for the patients with different foot sizes, and adaptability is good.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a lower limb training device for preventing VTE. Background Art

[0002] Venous thromboembolism (VTE) refers to blood clots that occur in deep veins, causing complete or incomplete blockage of blood vessels. It is a venous reflux disorder. It usually occurs in the legs, but can also occur in the upper limbs. Deep vein thrombosis can block venous blood flow and cause pain, swelling, and redness near the blocked blood vessels. Therefore, rehabilitation training is required for the affected limb of the patient with venous thrombosis. The prior art discloses a patent with application number 2017108159202, entitled "Passive Foot Trainer for Preventing Deep Vein Thrombosis", which can only perform flexion and dorsiflexion training on the patient's ankle. The patient's ankle is a relatively complex joint structure, which can not only perform flexion and dorsiflexion, but also inversion, eversion, rotation, etc., and the existing disclosed trainer has a relatively single training mode for the ankle, and cannot effectively exercise the ankle; At the same time, in the prior art, the patent with authorization publication number CN215841452U discloses a VTE prevention training device, in which a protrusion is provided on the groove of the pressing block, which can not only prevent venous thrombosis on the patient's affected limb, but also help massage the calf muscles and restore muscle strength. The position of the protrusion is fixed, and the friction with the calf is large during use, which increases the discomfort of the user. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a lower limb training device for VTE prevention, which can perform rolling massage on the patient's legs, avoiding sliding friction between the legs and the massage parts during lower limb training and increasing the patient's discomfort. The massage work can be carried out in conjunction with the training of the patient's lower limbs. The training methods are diverse and the training effect is good. At the same time, it does not require the setting of an additional power mechanism, thereby reducing the cost of use. It is convenient to fix the patient's feet and is easy to adapt to patients with different foot sizes. It has good adaptability and can effectively solve the problems in the background technology.

[0004] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme: A lower limb training device for VTE prevention, comprising a frame, a mounting box is rotatably connected to the inner side of the frame through a connecting shaft, a massage mechanism is installed on the inner side of the mounting box, a rubber baffle is fixed to the top of the mounting box, the contact surface of the rubber baffle with the patient's leg is an arc surface, the end of the support frame of the mounting box is rotatably connected to a mounting seat through a rotating shaft, the mounting seat is rotatably connected to a turntable through a bearing, a plurality of positioning rods for fixing the patient's feet are movably provided on the turntable, a reset mechanism is installed at the back of the turntable corresponding to the position of the positioning rod, a connecting frame is installed on the side of the mounting seat, and an ankle pump exercise auxiliary mechanism for driving the turntable to rotate is installed on the connecting frame; A transmission shaft is fixed to the end of the power shaft of the massage mechanism, the transmission shaft is connected to the frame through the leg-lifting auxiliary mechanism, and the transmission shaft is connected to the rotating shaft through the transmission mechanism; A PLC controller is installed on the side of the frame, and the PLC controller is electrically connected to an external power supply.

[0005] Furthermore, the massage mechanism includes a chain plate conveyor, which has two groups of chain plate conveyors. The two groups of chain plate conveyors are installed on the inner side of the installation box in a left-right symmetrical manner. The chain plate conveyor is electrically connected to the PLC controller, and the end of the power shaft of the chain plate conveyor is fixedly connected to the end of the transmission shaft.

[0006] Furthermore, the massage mechanism also includes a rotating shaft and a massage rod, the massage rod is rotatably connected to the inner side of the conveying chain plate of the chain plate conveyor through the rotating shaft, and the massage rod is a rubber rod.

[0007] Furthermore, the massage mechanism also includes silica gel particles, and the silica gel particles are evenly arranged on the surface of the massage rod.

[0008] Furthermore, the transmission mechanism includes a second sprocket, a chain and a first sprocket, the first sprocket is sleeved and fixed on the transmission shaft, the second sprocket is fixed on the end of the rotating shaft, and the first sprocket is transmission-connected to the second sprocket via the chain.

[0009] Furthermore, the leg-lifting auxiliary mechanism includes a first arc-shaped rack and a gear. The end of the first arc-shaped rack is fixedly connected to the frame. The center of the first arc-shaped rack is located on the axis of the connecting shaft. The gear is fixed at the end of the transmission shaft, and the gear is meshed with the teeth of the first arc-shaped rack.

[0010] Furthermore, the positioning rod is a rubber rod, and the contact end of the positioning rod and the foot is a hemispherical structure.

[0011] Furthermore, the reset mechanism includes a pressure plate and an electric push rod, the electric push rod is installed on the side of the pressure plate, the telescopic end of the electric push rod is fixedly connected to the back of the turntable, and the electric push rod is electrically connected to the PLC controller.

[0012] Furthermore, the ankle pump exercise assisting mechanism includes a servo motor, a screw rod, a guide rod and a transmission seat, the end of the guide rod is fixedly connected to the connecting frame, the screw rod is rotatably connected to the connecting frame, the servo motor is installed on the side of the connecting frame, and the output shaft of the servo motor is fixedly connected to the end of the screw rod, the transmission seat is slidably connected to the guide rod, the transmission seat is threadedly connected to the screw rod, and the servo motor is electrically connected to the PLC controller.

[0013] Furthermore, the ankle pump exercise auxiliary mechanism also includes a second arc-shaped rack and a tooth groove. The second arc-shaped rack is fixed to the back of the turntable. The tooth grooves are evenly arranged on the transmission seat. The second arc-shaped rack is meshed with the teeth of the tooth groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the lower limb training device for VTE prevention has the following advantages: 1. The massage mechanism is used to roll the patient's legs to avoid sliding friction between the legs and the massage area during lower limb training, which increases the patient's discomfort.

[0015] 2. The massage mechanism drives the mounting seat to rotate through the transmission mechanism, so that the patient's feet can be turned inward or outward. The massage mechanism is linked with the inversion and eversion training of the patient's feet through the transmission mechanism, thereby improving the training effect. At the same time, it does not need to set up an additional power mechanism, thereby reducing the cost of use.

[0016] 3. Its leg-lifting auxiliary mechanism can move inward and outward along with the patient's foot, with good linkage, thus improving the training effect.

[0017] 4. The ankle pump exercise assisting mechanism enables the patient's feet to perform ankle pump exercise, which can automatically train the patient's feet. At the same time, the patient's feet can also perform inversion, eversion and leg lifting exercises. The training methods are diverse, thereby improving the training effect.

[0018] 5. A cavity is formed by a plurality of positioning rods to fix the patient's foot. When it is not needed, the positioning rod is reset by a reset mechanism, so as to facilitate the use of the next patient. It is easy to fix and can be adapted to patients with different foot sizes, and has good adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional side structure of the present invention; Figure 3 for Figure 2 A schematic diagram of the enlarged structure at point A; Figure 4It is a partial structural schematic diagram of the ankle pump exercise auxiliary mechanism of the present invention; Figure 5 It is a schematic diagram of the partial structure of the massage mechanism of the present invention.

[0020] In the figure: 1-frame, 2-PLC controller, 3-leg lifting auxiliary mechanism, 31-first arc-shaped rack, 32-gear, 4-transmission mechanism, 41-second sprocket, 42-chain, 43-first sprocket, 5-reset mechanism, 51-pressing plate, 52-electric push rod, 6-ankle pump movement auxiliary mechanism, 61-servo motor, 62-screw rod, 63-guide rod, 64-second arc-shaped rack, 65-tooth groove, 66-transmission seat, 7-massage mechanism, 71-chain plate conveyor, 72-rotating shaft, 73-massage stick, 74-silica gel particles, 8-installation box, 9-connecting shaft, 10-rubber baffle, 11-connecting frame, 12-installation seat, 13-turntable, 14-positioning rod, 15-bearing, 16-transmission shaft, 17-rotating shaft. DETAILED DESCRIPTION

[0021] The present invention can be explained in detail by the following examples, and the purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0022] See also Figure 1-5 , this embodiment provides a technical solution: a lower limb training device for VTE prevention, comprising a frame 1, a mounting box 8 is rotatably connected to the inner side of the frame 1 through a connecting shaft 9, a massage mechanism 7 is installed on the inner side of the mounting box 8, a rubber baffle 10 is fixed to the top of the mounting box 8, and the contact surface between the rubber baffle 10 and the patient's leg is an arc surface, the end of the support frame of the mounting box 8 is rotatably connected to a mounting seat 12 through a rotating shaft 17, and the mounting seat 12 is rotatably connected to a turntable 13 through a bearing 15, and a plurality of positioning rods 14 for fixing the patient's feet are movably provided on the turntable 13, and a reset mechanism 5 is installed on the back of the turntable 13 at the position corresponding to the positioning rod 14, and a connecting frame 11 is installed on the side of the mounting seat 12, and an ankle pump exercise auxiliary mechanism 6 for driving the turntable 13 to rotate is installed on the connecting frame 11; A transmission shaft 16 is fixed to the end of the power shaft of the massage mechanism 7, the transmission shaft 16 is connected to the frame 1 through the leg-lifting auxiliary mechanism 3, and the transmission shaft 16 is connected to the rotating shaft 17 through the transmission mechanism 4; A PLC controller 2 is installed on the side of the frame 1, and the PLC controller 2 is electrically connected to an external power supply. The patient first wears compression stockings, and the patient's legs are placed on the massage mechanism 7, and the sides of the patient's legs are supported by rubber baffles 10.

[0023] The massage mechanism 7 includes a chain plate conveyor 71, and the chain plate conveyor 71 has two groups. The two groups of chain plate conveyors 71 are installed on the inner side of the installation box 8 in a left-right symmetrical manner. The chain plate conveyor 71 is electrically connected to the PLC controller 2. The end of the power shaft of the chain plate conveyor 71 is fixedly connected to the end of the transmission shaft 16. The massage mechanism 7 also includes a rotating shaft 72 and a massage rod 73. The massage rod 73 is rotatably connected to the inner side of the conveying chain plate of the chain plate conveyor 71 through the rotating shaft 72. The massage rod 73 is a rubber rod. The massage mechanism 7 also includes silica gel particles 74. The silica gel particles 74 are evenly arranged on the surface of the massage rod 73. The conveying chain plate of the chain plate conveyor 71 drives the massage rod 73 to reciprocate back and forth through the rotating shaft 72. The silica gel particles 74 on the massage rod 73 massage the patient's legs as the massage rod 73 rolls, which avoids the sliding friction between the legs and the massaged parts during the training of the lower limbs, thereby increasing the patient's discomfort.

[0024] The transmission mechanism 4 includes a second sprocket 41, a chain 42 and a first sprocket 43. The first sprocket 43 is sleeved and fixed on the transmission shaft 16. The second sprocket 41 is fixed on the end of the rotating shaft 17. The first sprocket 43 is connected to the second sprocket 41 through the chain 42. The power shaft of the chain plate conveyor 71 drives the transmission shaft 16 to rotate, and the transmission shaft 16 drives the first sprocket 43 to rotate. The first sprocket 43 is transmitted to the second sprocket 41 through the chain 42. The second sprocket 41 drives the mounting seat 12 to rotate through the rotating shaft 17, so that the patient's foot can be turned inward or outward. The massage mechanism 7 is linked with the inversion and eversion training of the patient's foot through the transmission mechanism 4, thereby improving the training effect. At the same time, it does not need to set up an additional power mechanism, thereby reducing the cost of use.

[0025] The leg-lifting auxiliary mechanism 3 includes a first arc-shaped rack 31 and a gear 32. The end of the first arc-shaped rack 31 is fixedly connected to the frame 1. The center of the first arc-shaped rack 31 is located on the axis of the connecting shaft 9. The gear 32 is fixed to the end of the transmission shaft 16. The gear 32 is meshed with the teeth of the first arc-shaped rack 31. The power shaft of the chain plate conveyor 71 drives the transmission shaft 16 to rotate. The transmission shaft 16 is meshed with the first arc-shaped rack 31 for transmission, so that the installation box 8 rotates around the connecting shaft 9, thereby adjusting the height of the patient's legs. The lifting or pressing action of the legs can be performed along with the inversion and eversion actions of the patient's feet, with good linkage, thereby improving the training effect.

[0026] The positioning rod 14 is a rubber rod, so as to make flexible contact with the patient's foot. The contact end of the positioning rod 14 with the foot is a hemispherical structure, so as to avoid the end of the positioning rod 14 being too sharp and causing discomfort to the patient.

[0027] The resetting mechanism 5 includes a pressing plate 51 and an electric push rod 52. The electric push rod 52 is installed on the side of the pressing plate 51. The telescopic end of the electric push rod 52 is fixedly connected to the back of the turntable 13. The electric push rod 52 is electrically connected to the PLC controller 2. The patient's foot steps on the positioning rod 14, so that several positioning rods 14 form a cavity that can fix the patient's foot. When it is not needed, the telescopic end of the electric push rod 52 drives the pressing plate 51 to perform telescopic movement, and the pressing plate 51 pushes the positioning rod 14, so that the positioning rod 14 can be reset, which is convenient for the next patient to use. It is easy to fix and can be adapted to patients with different foot sizes, and has good adaptability.

[0028] The ankle pump motion assisting mechanism 6 includes a servo motor 61, a screw rod 62, a guide rod 63 and a transmission seat 66. The end of the guide rod 63 is fixedly connected to the connecting frame 11, the screw rod 62 is rotatably connected to the connecting frame 11, the servo motor 61 is installed on the side of the connecting frame 11, and the output shaft of the servo motor 61 is fixedly connected to the end of the screw rod 62, the transmission seat 66 is slidably connected to the guide rod 63, the transmission seat 66 is threadedly connected to the screw rod 62, the servo motor 61 is electrically connected to the PLC controller 2, and the ankle pump motion assisting mechanism 6 also includes a second arc-shaped rack 64 and a tooth groove 65. The second arc-shaped rack 64 is fixed to the back of the turntable 13. The tooth grooves 65 are evenly arranged on the transmission seat 66, the second arc-shaped rack 64 is meshed with the tooth grooves 65, the output shaft of the servo motor 61 drives the lead screw 62 to rotate, the lead screw 62 and the transmission seat 66 are threadedly transmitted, the transmission seat 66 slides along the guide rod 63, the tooth grooves 65 on the transmission seat 66 are meshed with the second arc-shaped rack 64, the second arc-shaped rack 64 drives the turntable 13 to rotate, and the turntable 13 drives the patient's foot to turn over through the positioning rod 14, so that the patient's foot performs ankle pump exercise, which can automatically train the patient's foot, and the training method is diverse, thereby improving the training effect.

[0029] The working principle of the lower limb training device for VTE prevention provided by the present invention is as follows: the patient first wears compression stockings, the patient's legs are placed on the massage mechanism 7, the side of the patient's legs are supported by the rubber baffle 10, and the patient's feet step on the positioning rods 14, so that a plurality of positioning rods 14 form a cavity that can fix the patient's feet. When it is not needed, the telescopic end of the electric push rod 52 drives the pressing plate 51 to perform telescopic movement, and the pressing plate 51 pushes the positioning rod 14, so that the positioning rod 14 can be reset, which is convenient for the next patient to use; The conveying chain of the chain conveyor 71 drives the massage rod 73 to reciprocate forward and backward through the rotating shaft 72, and the silica gel particles 74 on the massage rod 73 massage the patient's legs as the massage rod 73 rolls; The power shaft of the chain plate conveyor 71 drives the transmission shaft 16 to rotate, and the transmission shaft 16 is meshed with the first arc-shaped rack 31 for transmission, so that the installation box 8 rotates around the connecting shaft 9, thereby adjusting the height of the patient's legs; The power shaft of the chain plate conveyor 71 drives the transmission shaft 16 to rotate, the transmission shaft 16 drives the first sprocket 43 to rotate, the first sprocket 43 is transmitted to the second sprocket 41 through the chain 42, and the second sprocket 41 drives the mounting seat 12 to rotate through the rotating shaft 17, so that the patient's foot can be turned inward or outward; The output shaft of the servo motor 61 drives the lead screw 62 to rotate, the lead screw 62 and the transmission seat 66 are threadedly transmitted, the transmission seat 66 slides along the guide rod 63, the tooth groove 65 on the transmission seat 66 is meshed with the teeth of the second arc-shaped rack 64, the second arc-shaped rack 64 drives the turntable 13 to rotate, and the turntable 13 drives the patient's foot to flip through the positioning rod 14, so that the patient's foot performs ankle pump exercise.

[0030] It is worth noting that the components disclosed in the above embodiments are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods. The PLC controller 2 model is XCC, and the driving motor of the chain conveyor 71 adopts a servo motor. When working, the conveying chain of the chain conveyor 71 performs reciprocating motion.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances, for example, the rotational connection can be a rotational connection through a bearing.

[0032] The parts of the present invention that are not described in detail are prior art. Although the present invention is specifically demonstrated and introduced in conjunction with the preferred implementation scheme, there are many methods and approaches to specifically implement the technical solution. The above is only a preferred implementation scheme of the present invention, but technical personnel in the relevant field should understand that various changes can be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined in the attached claims, and all of them are within the scope of protection of the present invention.

Claims

1. A lower limb training device for preventing VTE, comprising a frame (1), characterized in that: The inner side of the frame (1) is rotatably connected to a mounting box (8) via a connecting shaft (9), a massage mechanism (7) is installed on the inner side of the mounting box (8), a rubber baffle (10) is fixed on the top of the mounting box (8), the contact surface of the rubber baffle (10) with the patient's leg is an arc-shaped surface, the end of the support frame of the mounting box (8) is rotatably connected to a mounting seat (12) via a rotating shaft (17), the mounting seat (12) is rotatably connected to a turntable (13) via a bearing (15), a plurality of positioning rods (14) for fixing the patient's feet are movably provided on the turntable (13), a reset mechanism (5) is installed on the back of the turntable (13) at positions corresponding to the positioning rods (14), a connecting frame (11) is installed on the side of the mounting seat (12), and an ankle pump exercise auxiliary mechanism (6) for driving the turntable (13) to rotate is installed on the connecting frame (11); A transmission shaft (16) is fixed to the end of the power shaft of the massage mechanism (7); the transmission shaft (16) is connected to the frame (1) via the leg-lifting auxiliary mechanism (3); and the transmission shaft (16) is transmission-connected to the rotating shaft (17) via the transmission mechanism (4); A PLC controller (2) is installed on the side of the frame (1), and the PLC controller (2) is electrically connected to an external power supply.

2. A lower limb training device for VTE prevention according to claim 1, characterized in that: The massage mechanism (7) comprises a chain plate conveyor (71), wherein the chain plate conveyor (71) has two groups, and the two groups of chain plate conveyors (71) are installed on the inner side of the installation box (8) in a left-right symmetrical manner, and the chain plate conveyor (71) is electrically connected to the PLC controller (2), and the end of the power shaft of the chain plate conveyor (71) is fixedly connected to the end of the transmission shaft (16).

3. A lower limb training device for VTE prevention according to claim 2, characterized in that: The massage mechanism (7) further comprises a rotating shaft (72) and a massage rod (73); the massage rod (73) is rotatably connected to the inner side of a conveying chain plate of a chain plate conveyor (71) via the rotating shaft (72); the massage rod (73) is a rubber rod.

4. A lower limb training device for VTE prevention according to claim 3, characterized in that: The massage mechanism (7) further comprises silica gel particles (74), wherein the silica gel particles (74) are evenly arranged on the surface of the massage rod (73).

5. A lower limb training device for VTE prevention according to claim 1, characterized in that: The transmission mechanism (4) comprises a second sprocket (41), a chain (42) and a first sprocket (43); the first sprocket (43) is sleeved and fixed on the transmission shaft (16); the second sprocket (41) is fixed on the end of the rotating shaft (17); and the first sprocket (43) is transmission-connected to the second sprocket (41) via the chain (42).

6. A lower limb training device for VTE prevention according to claim 1, characterized in that: The leg-lifting auxiliary mechanism (3) comprises a first arc-shaped rack (31) and a gear (32); the end of the first arc-shaped rack (31) is fixedly connected to the frame (1); the center of the circle of the first arc-shaped rack (31) is located on the axis of the connecting shaft (9); the gear (32) is fixed to the end of the transmission shaft (16); the gear (32) and the first arc-shaped rack (31) are meshed with each other.

7. A lower limb training device for VTE prevention according to claim 1, characterized in that: The positioning rod (14) is a rubber rod, and the contact end of the positioning rod (14) with the foot is a hemispherical structure.

8. A lower limb training device for VTE prevention according to claim 1, characterized in that: The reset mechanism (5) comprises a pressing plate (51) and an electric push rod (52), wherein the electric push rod (52) is mounted on a side of the pressing plate (51), a telescopic end of the electric push rod (52) is fixedly connected to the back of the turntable (13), and the electric push rod (52) is electrically connected to the PLC controller (2).

9. A lower limb training device for VTE prevention according to claim 1, characterized in that: The ankle pump exercise assisting mechanism (6) comprises a servo motor (61), a screw rod (62), a guide rod (63) and a transmission seat (66); the end of the guide rod (63) is fixedly connected to the connecting frame (11); the screw rod (62) is rotatably connected to the connecting frame (11); the servo motor (61) is mounted on a side of the connecting frame (11); the output shaft of the servo motor (61) is fixedly connected to the end of the screw rod (62); the transmission seat (66) is slidably connected to the guide rod (63); the transmission seat (66) is threadedly connected to the screw rod (62); and the servo motor (61) is electrically connected to the PLC controller (2).

10. A lower limb training device for VTE prevention according to claim 9, characterized in that: The ankle pump exercise auxiliary mechanism (6) further comprises a second arc-shaped rack (64) and a tooth groove (65), wherein the second arc-shaped rack (64) is fixed to the back of the rotating disk (13), and the tooth groove (65) is evenly arranged on the transmission seat (66), and the second arc-shaped rack (64) and the tooth groove (65) are meshed with each other.

Images