Auxiliary device for preventing lower limb deep vein thrombosis

Abstract

The utility model discloses an auxiliary device for preventing lower limb deep vein thrombosis. The auxiliary device for preventing the lower limb deep venous thrombosis comprises two foot supporting plates used for supporting feet, a rotating shaft used for supporting the foot supporting plates to rotate, a driving mechanism used for providing power to drive the rotating shaft to rotate, a clutch mechanism used for disconnecting or connecting the driving mechanism and the rotating shaft, and a mounting base used for mounting the rotating shaft. The rotating shaft is rotatably arranged on the mounting seat, the two foot supporting plates are mounted on the rotating shaft, the driving mechanism is provided with an output shaft, and the clutch mechanism comprises a connecting sleeve used for connecting the output shaft and the rotating shaft and a shifting rod used for driving the connecting sleeve to move so that the output shaft and the rotating shaft can be disconnected or connected. The connecting sleeve is arranged on the output shaft or the rotating shaft in a sliding mode, and the connecting sleeve and the rotating shaft or the output shaft rotate synchronously. The auxiliary device for preventing the deep venous thrombosis of the lower limbs can assist a critical patient to do ankle pump movement and can also be matched with the patient to do ankle pump movement autonomously.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of preventing deep vein thrombosis of lower limbs, in particular to a deep vein thrombosis of lower limbs prevention auxiliary device. BACKGROUND

[0002] When doing ankle pump exercise, the flexion and extension of ankle can make calf muscle contract and relax, and the calf muscle contraction can extrude the vein, which can promote the venous blood backflow to the heart and prevent deep vein thrombosis of lower limbs. Ankle pump exercise is usually counted by times, and a certain number of times are needed each time to be effective.

[0003] At present, ankle pump exercise mainly relies on the patient's own movement, and the body function of the critical patient has not fully recovered, which leads to that the critical patient cannot actively do ankle pump exercise and can only rely on the patient's family members or medical staff to do ankle pump for the patient. If the time is long, it is easy to appear non-standard action, the patient is only responsible for a single patient, and the medical staff may need to be responsible for multiple patients, which is easy to be tired. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to provide a deep vein thrombosis of lower limbs prevention auxiliary device which can assist the patient to do ankle pump exercise and can also adapt to the patient to actively do ankle pump exercise.

[0005] In order to solve the above problems, the utility model provides a deep vein thrombosis of lower limbs prevention auxiliary device, which comprises two foot supporting plates for supporting feet, a rotating shaft for supporting the rotation of the foot supporting plate, a driving mechanism for providing power to drive the rotation of the rotating shaft, a clutch mechanism for disconnecting or connecting the driving mechanism and the rotating shaft, and a mounting seat for mounting the rotating shaft, the rotating shaft is rotatably arranged on the mounting seat, the two foot supporting plates are mounted on the rotating shaft, the driving mechanism has an output shaft, the clutch mechanism comprises a connecting sleeve for connecting the output shaft and the rotating shaft and a lever for driving the connecting sleeve to move to disconnect or connect the output shaft and the rotating shaft, the connecting sleeve is slidably arranged on the output shaft or the rotating shaft, and the connecting sleeve rotates synchronously with the rotating shaft or the output shaft.

[0006] Further, the inner wall of the connecting sleeve is provided with a protruding part for positioning, the rotating shaft is provided with a first positioning groove matched with the protruding part, and the output shaft is provided with a second positioning groove matched with the positioning protruding part, when the connecting sleeve is slidably arranged on the output shaft, the positioning protruding part is located in the second positioning groove, when the connecting sleeve is slidably arranged on the rotating shaft, the positioning protruding part is located in the first positioning groove, and when the connecting sleeve connects the rotating shaft and the connecting shaft, the positioning protruding part is located in the first positioning groove and the second positioning groove at the same time.

[0007] Further, the counter for counting the number of times of turning over of the foot supporting plate is arranged on the mounting base.

[0008] Further, a fixing belt is arranged on the foot supporting plate for fixing the foot on the foot supporting plate.

[0009] Further, the foot supporting plate comprises a supporting plate for supporting the heel and a limiting plate for fitting the sole, the supporting plate is connected with the limiting plate, and an arc-shaped groove for fitting the heel is arranged on the supporting plate.

[0010] Further, a soft pad is arranged in the arc-shaped groove of the supporting plate, and a soft pad is arranged on the side of the limiting plate for fitting the sole.

[0011] Further, the driving mechanism comprises a motor for providing power, a worm for transmitting the power of the motor, a worm wheel for transmitting the power of the worm, an output shaft for outputting the power of the worm wheel, and a box body for mounting the motor and the output shaft, the output end of the motor is connected with the worm, the worm wheel is fixed on the output shaft, the worm wheel is engaged with the worm, and the output shaft is rotatably arranged on the box body.

[0012] Further, an avoiding opening for rotating the shifting rod and a moving opening for accommodating the shifting rod are arranged on the box body, the moving opening is communicated with the avoiding opening, the output shaft is disconnected with the rotating shaft when the shifting rod is located in the moving opening, the connecting sleeve is connected with the rotating shaft when the shifting rod is located in the avoiding opening, the connecting sleeve is located in the box body, and the upper end of the shifting rod is extended out of the box body from the avoiding opening or the moving opening.

[0013] Further, a slot is arranged on the box body, and a baffle for disconnecting the moving opening and the avoiding opening is arranged in the slot.

[0014] Further, the rotating shaft comprises an adjusting section, a connecting section and a mounting section, the adjusting section and the connecting section are both provided with a first positioning groove, the mounting section has two ends, the mounting section is rotatably arranged on the vertical plate, the two ends of the adjusting section are fixed with the mounting section, a connecting hole for mounting the adjusting section is arranged on the foot supporting plate, and a protrusion matched with the first positioning groove is arranged in the connecting hole.

[0015] The auxiliary device for preventing deep vein thrombosis of lower limbs of the utility model connects the output shaft and the rotating shaft by the connecting sleeve, can drive the rotating shaft to swing at a certain angle by the driving mechanism, and thus can drive the foot supporting plate to make the ankle pump movement of the critical patient; when the patient needs to actively make the ankle pump movement, the connecting sleeve is disconnected with the output shaft by moving the shifting rod, at this time, the foot supporting plate can rotate freely, and thus the patient can make the ankle pump movement conveniently; not only can the ankle pump movement of the critical patient be assisted, and the medical staff or family members can be replaced, and the physical strength can be saved, but also the ankle pump movement of the patient can be actively adapted. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structure schematic view of the preferred embodiment of the auxiliary device for preventing lower limb deep vein thrombosis of the utility model.

[0017] Figure 2 is a top view of the auxiliary device for preventing lower limb deep vein thrombosis of the utility model.

[0018] Figure 3 is a position relation view of the foot supporting plate and the counter.

[0019] Figure 4 is a structure schematic view of the foot supporting plate pressing the counter.

[0020] Figure 5 is a structure schematic view of the foot supporting plate.

[0021] Figure 6 is a structure schematic view of the driving mechanism connecting with the rotating shaft through the clutch mechanism.

[0022] Figure 7 is a structure schematic view of the clutch mechanism connecting the rotating shaft and the output shaft.

[0023] Figure 8 is a structure schematic view of the clutch mechanism.

[0024] Figure 9 is a structure schematic view of the driving mechanism.

[0025] Figure 10 is a top view of the box.

[0026] Figure 11 is a local schematic view of the box with the baffle.

[0027] Figure 12 is a structure schematic view of another embodiment of the rotating shaft.

[0028] Figure 13 is a structure schematic view of the connecting hole.

[0029] Figure 14 is a control principle view of the electronic counter, the controller and the motor.

[0030] The meaning of each reference sign in the drawings is as follows:

[0031] Supporting foot plate 1, fixing belt 10, supporting plate 11, arc-shaped groove 111, connecting hole 112, protrusion 113, limiting plate 12, rotating shaft 2, first positioning groove 20, adjusting section 21, connecting section 22, mounting section 23, clutching mechanism 3, shifting lever 31, connecting sleeve 32, protruding part 321, driving mechanism 4, box 41, avoiding opening 411, moving opening 412, motor 42, worm wheel 43, worm 44, output shaft 45, second positioning groove 451, baffle 46, counter 5, mounting seat 6, vertical plate 61, mounting plate 62, controller 7. DETAILED DESCRIPTION

[0032] The utility model will be further described below with reference to the drawings.

[0033] Example one

[0034] As Figures 1 to 4 shown, the preferred embodiment of the auxiliary device for preventing lower extremity deep vein thrombosis of the utility model includes supporting foot plate 1, rotating shaft 2, clutching mechanism 3, driving mechanism 4, counter 5 and mounting seat 6. The supporting foot plate 1 is used to put feet, the supporting foot plate 1 is installed on the rotating shaft 2, the supporting foot plate 1 is two, and the two supporting foot plates 1 are side by side arranged on the rotating shaft 2. The rotating shaft 2 is rotatably installed on the mounting seat 6, so that the supporting foot plate 1 can rotate around the axis of the rotating shaft 2, facilitating the realization of ankle pump movement. The driving mechanism 4 has an output shaft 45, the clutching mechanism 3 is used to disconnect or combine the output shaft 45 of the driving mechanism 4 and the rotating shaft 2; when the clutching mechanism 3 combines the output shaft 45 and the rotating shaft 2, the driving mechanism 4 can drive the rotating shaft 2 to rotate through the clutching mechanism 3, the rotating shaft 2 drives the supporting foot plate 1 to rotate, and the supporting foot plate 1 drives the patient to perform ankle pump movement; when the clutching mechanism 3 disconnects the output shaft 45 and the rotating shaft 2, the rotating shaft 2 is not limited by the driving mechanism 4, and the rotating shaft 2 and the supporting foot plate 1 can rotate freely, so that the patient can actively perform ankle pump movement. The counter 5 is installed on the mounting seat 6, the counter 5 is two, and each counter 5 corresponds to a supporting foot plate 1, when the supporting foot plate 1 rotates by a certain angle, the supporting foot plate 1 touches the counter 5, so that the counter 5 counts, facilitating the statistics of the number of ankle pump movements. The counter 5 is a conventional device, and its structure and principle are known to those skilled in the art, and the specific structure and counting principle will not be described here.

[0035] The mounting base 6 comprises two vertical plates 61 and a mounting plate 62 connected between the two vertical plates 61, both ends of the rotating shaft 2 are rotatably arranged on the vertical plates 61, and the end of the rotating shaft 2 close to the driving mechanism 4 extends out of the vertical plate 61 and is used to be connected with the clutch mechanism 3. The counter 5 is mounted on the mounting plate 62. In order to enable the counter 5 to be pressed by the foot supporting plate 1 better, the mounting plate 62 is obliquely mounted on the vertical plate 61, so that when the foot supporting plate 1 is turned to press the counter 5, the foot supporting plate 1 can be pressed in a positive direction, that is, the force borne by the counter 5 is perpendicular to the mounting plate 62, which can increase the stability of the counter 5 fixed on the mounting plate 62.

[0036] The foot supporting plate 1 is provided with a fixing belt 10, which is used to fix the foot sole and fix the foot sole on the foot supporting plate 1. One end of the fixing belt 10 is fixed on one side of the foot supporting plate 1, and the other end of the fixing belt 10 is a movable end, which is provided with a magic tape and is fixed on the other side of the foot supporting plate 1 through the magic tape, so as to be fixed according to different sizes of foot soles. Of course, in other embodiments, the fixing belt 10 can also be fixed on the other side of the foot supporting plate 1 through a socket and the like. In order to be able to better operate the fixing belt 10, the movable end of the fixing belt 10 is generally fixed on the side far away from the other foot supporting plate 1.

[0037] As shown in Figure 5 The foot supporting plate 1 comprises a supporting plate 11 and a limiting plate 12, and the supporting plate 11 and the limiting plate 12 are integrally formed, which is convenient for processing and manufacturing. The supporting plate 11 is used to support the heel, and the supporting plate 11 is provided with an arc-shaped groove 111, so as to increase the stress area of the heel and improve the comfort; in order to further improve the comfort, a soft pad (not shown in the figure) is arranged in the arc-shaped groove 111 of the supporting plate 11. The limiting plate 12 is in close contact with the foot sole and limits the foot sole, and the fixing belt 10 is mounted on the limiting plate 12; in order to improve the comfort, a soft pad (not shown in the figure) is arranged on the side of the limiting plate 12 in close contact with the foot sole.

[0038] As shown in Figures 6 to 8As shown, the clutch mechanism 3 comprises a lever 31 and a connecting sleeve 32, the lever 31 is fixed on the connecting sleeve 32, the connecting sleeve 32 is sleeved on the output shaft 45, the lever 31 is used to drive the connecting sleeve 32 to move along the axis of the output shaft 45, so that one end of the connecting sleeve 32 is sleeved on the rotating shaft 2 or separated from the rotating shaft 2, that is, the output shaft 45 is combined with or disconnected from the rotating shaft 2. When the two ends of the connecting sleeve 32 are sleeved on the output shaft 45 and the rotating shaft 2 respectively, the connecting sleeve 32 combines the output shaft 45 with the rotating shaft 2, that is, the rotation of the output shaft 45 can drive the rotating shaft 2 to rotate through the connecting sleeve 32. When the connecting sleeve 32 is only sleeved on the output shaft 45, the output shaft 45 cannot drive the rotating shaft 2 to rotate, and the rotating shaft 2 can rotate freely without being limited by the output shaft 45. Moving the lever 31 to the side of the driving mechanism 4 can separate the connecting sleeve 32 from the rotating shaft 2, that is, the connecting sleeve 32 is only sleeved on the output shaft 45; moving the lever 31 away from the driving mechanism 4 can make the connecting sleeve 32 be sleeved on the output shaft 45 and the rotating shaft 2 at the same time, that is, the output shaft 45 can drive the rotating shaft 2 to rotate.

[0039] The inner wall of the connecting sleeve 32 is provided with positioning protrusions 321, the protrusions 321 are evenly distributed on the inner wall of the connecting sleeve 32, the rotating shaft 2 is provided with first positioning grooves 20 matched with the protrusions 321, and the output shaft 45 is provided with second positioning grooves 451 matched with the protrusions 321. The positioning protrusions 321 are located in the second positioning grooves 451, and when the connecting sleeve 32 is connected with the rotating shaft 2, the positioning protrusions 321 are also located in the first positioning grooves 20. The number of the protrusions 321, the first positioning grooves 20 and the second positioning grooves 451 is the same. The more the number of the protrusions 321, the first positioning grooves 20 and the second positioning grooves 451, the easier the connecting sleeve 32 is inserted into the rotating shaft 2.

[0040] In another embodiment, the connecting sleeve 32 can also be arranged on the rotating shaft 2. When it is needed to combine the rotating shaft 2 with the output shaft 45, the lever 31 is used to drive the connecting sleeve 32 to move to the side of the driving mechanism 4; when it is needed to separate the rotating shaft 2 from the output shaft 45, the lever 31 is used to drive the connecting sleeve 32 to move away from the side of the driving mechanism 4.

[0041] As Figure 6 and Figure 9As shown, the driving mechanism 4 comprises a box 41, a motor 42, a worm gear 43, a worm 44 and an output shaft 45, the motor 42 is fixed on the box 41, the output end of the motor 42 is connected with the worm 44, the motor 42 is used for driving the worm 44 to rotate, the worm gear 43 is fixed on the output shaft 45, the worm gear 43 is engaged with the worm 44, the worm 44 drives the worm gear 43 to rotate, the worm gear 43 drives the output shaft 45 to rotate. The output shaft 45 is rotatably arranged on the box 41. The connecting sleeve 32 and the lever 31 are located in the box 41, so that the moving parts can be avoided from being exposed, the upper end of the lever 31 extends out of the box 41, so as to facilitate the movement of the lever 31. The motor 42 drives the worm 44 to rotate, the worm 44 drives the worm gear 43 to rotate, the worm gear 43 drives the output shaft 45 to rotate, and the output shaft 45 drives the connecting sleeve 32 to rotate. When the motor 42 stops outputting, due to the structure of the worm gear 43 and the worm 44, self-locking can be formed, that is, the output shaft 45 cannot rotate, so that the rotating shaft 2 cannot rotate, and finally the supporting leg plate 1 is kept at the corresponding position, which provides a basis for keeping the foot in a straight and tight or hooked posture, and also saves the consumption of electric quantity.

[0042] As Figure 10 shown, the box 41 is provided with an avoiding opening 411 and a moving opening 412, the lever 31 is located in the avoiding opening 411 or the moving opening 412, the avoiding opening 411 is used for rotating the lever 31, the length of the avoiding opening 411 can limit the rotating angle of the lever 31, so as to avoid that the rotating angle of the rotating shaft 2 is too large, the moving opening 412 is communicated with the avoiding opening 411, and the lever 31 can enter the moving opening 412 through the avoiding opening 411. When the lever 31 enters the moving opening 412, the connecting sleeve 32 is separated from the rotating shaft 2; when the lever 31 enters the avoiding opening 411, the connecting sleeve 32 is connected with the rotating shaft 2. In the embodiment, since the connecting sleeve 32 is always connected with the output shaft 45, the moving opening 412 is located on the left side of the avoiding opening 411; in other embodiments, if the connecting sleeve 32 is always connected with the rotating shaft 2, the moving opening 412 is located on the right side of the avoiding opening 411, and the position of the moving opening 412 is correspondingly arranged according to the installation position of the connecting sleeve 32. The connecting sleeve 32 is located in the box 41, and the upper end of the lever 31 extends out of the box 41 through the avoiding opening 411 or the moving opening 412, so as to facilitate the operation of the lever 31 outside the box 41, and the operation is more convenient.

[0043] As Figure 11As shown, in order to prevent the shift lever 31 from moving into the moving opening 412 or the avoiding opening 411 due to an accident, a slot is arranged on the box 41, and a baffle 46 is arranged in the slot, which disconnects the moving opening 412 and the avoiding opening 411. In this way, the shift lever 31 cannot enter the moving opening 412 or the avoiding opening 411 due to an accident, that is, the shift lever 31 always remains in the moving opening 412 or the avoiding opening 411, and the shift lever 31 can move back and forth between the moving opening 412 and the avoiding opening 411 only when the baffle 46 is removed. The side wall of the box 41 is used as the vertical plate 61, so that the components can be saved, and the top of the side wall for the vertical plate 61 is lower than the position where the fixing belt 10 is arranged, which facilitates the operation of the fixing belt 10.

[0044] In another embodiment, a travel switch (not shown in the figure) can also be arranged at the avoiding opening 411, which is used to control the on-off of the motor 42. The travel switch is normally closed, and when the shift lever 31 is located in the avoiding opening 411, the travel switch is disconnected, the motor 42 is powered off, and the motor 42 cannot be started. Only when the shift lever 31 is located in the moving opening 412, the motor 42 is powered on, which effectively avoids the accidental start of the motor 42 when the shift lever 31 is in the avoiding opening 411, thereby damaging the shift lever 31 or the motor 42.

[0045] When the auxiliary ankle pump exercise is needed, the foot of the critical patient is placed on the foot supporting plate 1, and then the motor 42 is started, and then the motor 42 drives the worm 44 to rotate, the worm 44 drives the worm wheel 43 to rotate, the worm wheel 43 drives the output shaft 45 to rotate, the output shaft 45 drives the connecting sleeve 32 to rotate, the connecting sleeve 32 drives the rotating shaft 2 to rotate, the rotating shaft 2 drives the foot supporting plate 1 to rotate, and the foot supporting plate 1 drives the foot to be straightened. When the foot is straightened, the motor 42 stops rotating, and the stop time is generally 5-10 seconds, and then the electrode reversely rotates to hook the foot with the foot supporting plate 1, and the hooking is also stopped, and the stop time is the same. After the stop time, the motor 42 is reversed again, and thus the reciprocating movement is realized, so that the critical patient can passively perform the ankle pump exercise. The foot supporting plate 1 will press the counter 5 once when the foot is straightened each time, so that the number of ankle pump exercises can be counted.

[0046] When the patient can actively perform the ankle pump exercise, the shift lever 31 is shifted to move away from the foot supporting plate 1, so that the connecting sleeve 32 is separated from the rotating shaft 2. Then the foot is placed on the foot supporting plate 1 to perform the ankle pump exercise. When the ankle pump exercise is performed, the counter 5 can be used to count the number of times.

[0047] The device can help the critical patient to perform the ankle pump exercise and prevent the deep vein thrombosis of the lower limbs. Meanwhile, when the critical patient recovers, the connecting sleeve 32 is moved to disconnect the output shaft 45 and the rotating shaft 2, so that the patient can actively perform the ankle pump exercise.

[0048] Example Two

[0049] The difference between the embodiment and the embodiment one is that the structure of the rotating shaft 2 is different.

[0050] As shown in Figure 12 and Figure 13 , the rotating shaft 2 comprises an adjusting section 21, a connecting section 22 and a mounting section 23, the adjusting section 21 and the connecting section 22 are both provided with a first positioning groove 20, the mounting section 23 is provided with two ends, the mounting section 23 is rotatably mounted on the vertical plate 61, the two ends of the adjusting section 21 are fixed with the mounting section 23, and the adjusting section 21 and the mounting section 23 can be fixed by welding or screwing or the like. The supporting leg plate 1 is provided with a connecting hole 112, the connecting hole 112 is provided with a protrusion 113 matched with the first positioning groove 20, so that the supporting leg plate 1 can move transversely on the rotating shaft 2, and the rotating shaft 2 and the foot supporting plate can also rotate synchronously. Moving the foot supporting plate can make the supporting leg plate 1 be in a comfortable position, and the experience of the patient using is better.

[0051] Embodiment three

[0052] As shown in Figure 14 , in the embodiment, the counter 5 is an optical sensor, the counter 5 is electrically connected with a controller 7, the controller 7 can be a conventional device such as a circuit board or a single-chip microcomputer, the counter 5 transmits an electric signal of a recorded number of times to the controller 7 through electrical connection, and the controller 7 is also electrically connected with the motor 42. When the number of times reaches a predetermined value, the controller 7 controls the motor 42 to reset and stop outputting, and it is not necessary for medical staff or family members to squat all the time.

[0053] The above is only the embodiment of the utility model, and does not limit the patent range of the utility model, and equivalent structures made by using the contents of the utility model specification and drawings, direct or indirect application in other related technical fields, are also within the patent protection range of the utility model.

Claims

1. A lower extremity deep vein thrombosis prophylaxis assist device, characterized by: The utility model provides a kind of foot support, including two foot support plates for foot support, a rotating shaft for supporting the rotation of foot support plate, a driving mechanism for providing power to drive the rotation of rotating shaft, a clutch mechanism for disconnecting or connecting driving mechanism and rotating shaft and a mounting seat for mounting rotating shaft, rotating shaft is arranged on the mounting seat, two foot support plates are mounted on the rotating shaft, the driving mechanism has output shaft, the clutch mechanism includes connecting sleeve for connecting output shaft and rotating shaft and shift lever for driving connecting sleeve to move to disconnect or connect output shaft and rotating shaft, connecting sleeve is slidably arranged on output shaft or rotating shaft, and connecting sleeve rotates synchronously with rotating shaft or output shaft.

2. The auxiliary device for preventing deep vein thrombosis of lower extremity according to claim 1, characterized in that: The inner wall of the connecting sleeve is provided with a protrusion for positioning, the rotating shaft is provided with a first positioning groove adapted to the protrusion, and the output shaft is provided with a second positioning groove adapted to the positioning protrusion. When the connecting sleeve is slidably arranged on the output shaft, the positioning protrusion is located in the second positioning groove. When the connecting sleeve is slidably arranged on the rotating shaft, the positioning protrusion is located in the first positioning groove. When the connecting sleeve connects the rotating shaft and the connecting shaft, the positioning protrusion is located in the first positioning groove and the second positioning groove at the same time.

3. The auxiliary device for preventing deep vein thrombosis of lower extremity according to claim 1, characterized in that: The utility model also includes a counter for counting the number of times the foot support plate is turned over, and the counter is mounted on the mounting seat.

4. The auxiliary device for preventing deep vein thrombosis of lower extremity according to claim 1, wherein: The foot support plate is provided with a fixing belt for fixing the foot on the foot support plate.

5. The auxiliary device for preventing deep vein thrombosis of lower extremity according to claim 1, wherein: The foot support plate includes a supporting plate for supporting the heel and a limiting plate for fitting the sole, the supporting plate is connected with the limiting plate, and the supporting plate is provided with an arc-shaped groove for fitting the heel.

6. The auxiliary device for preventing deep vein thrombosis of lower extremity according to claim 5, wherein: The arc-shaped groove of the supporting plate is provided with a soft pad, and the side of the limiting plate that fits the sole is provided with a soft pad.

7. The auxiliary device for preventing deep vein thrombosis of lower extremity according to claim 1, wherein: The driving mechanism includes a motor for providing power, a worm for transmitting the power of the motor, a worm gear for transmitting the power of the worm, an output shaft for outputting the power of the worm gear, and a box body for mounting the motor and the output shaft. The output end of the motor is connected with the worm, the worm gear is fixed on the output shaft, the worm gear is engaged with the worm, and the output shaft is rotatably arranged on the box body.

8. The auxiliary device for preventing deep vein thrombosis of lower extremity according to claim 7, characterized in that: The box body is provided with an avoiding opening for the rotation of the shift lever and a moving opening for accommodating the shift lever, and the moving opening is communicated with the avoiding opening. When the shift lever is located in the moving opening, the connection between the output shaft and the rotating shaft is disconnected. When the shift lever is located in the avoiding opening, the connecting sleeve is connected with the rotating shaft, the connecting sleeve is located in the box body, and the upper end of the shift lever extends out of the box body from the avoiding opening or the moving opening.

9. The auxiliary device for preventing deep vein thrombosis of lower extremity according to claim 7, characterized in that: The box body is provided with a slot, and a baffle for disconnecting the moving opening and the avoiding opening is inserted in the slot.

10. The auxiliary device for preventing deep vein thrombosis of lower extremity according to claim 1, wherein: The rotating shaft includes an adjusting section, a connecting section and a mounting section. The adjusting section and the connecting section are both provided with a first positioning groove. The mounting section has two ends, and the mounting section is rotatably arranged on a vertical plate. The two ends of the adjusting section are fixed with the mounting section. The foot support plate is provided with a connecting hole for mounting the adjusting section, and the connecting hole is provided with a protrusion adapted to the first positioning groove.

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