Ankle pump exerciser for preventing deep vein thrombosis of lower limbs

Abstract

The application provides an ankle pump exerciser for preventing lower extremity deep vein thrombosis, comprising a bottom plate, a pedal, a mounting bracket and a resistance mechanism; two pedals are arranged and correspond to the positions of the feet of a patient respectively, the upper surface of the pedal is provided with a containing cavity for accommodating the feet of the patient, and a wearing assembly for positioning the feet of the patient is arranged above the containing cavity; the mounting bracket is used for mounting the pedal and is arranged on the bottom plate through a lifting assembly; the pedal is driven to rotate through a driving rotating mechanism, and the driving rotating mechanism can also release the control of the pedal; and the resistance mechanism applies resistance to the pedal and makes the pedal be arranged in an inclined manner. The technical scheme of the application can not only be used for the patient to actively exercise through the instrument, but also can be used for the instrument to actively provide lower extremity exercise for the patient, active and passive exercise modes are cooperated, different use requirements of patients with different conditions, different muscle strength and different stages are adapted, complications such as VTE can be prevented, rehabilitation treatment can be promoted, and the application has high clinical application value.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an ankle pump exercise device for preventing deep vein thrombosis in the lower extremities. Background Technology

[0002] Venous thromboembolism (VTE) includes deep vein thrombosis (DVT) and pulmonary embolism (PE). VTE is characterized by high incidence, high recurrence rate, high disability rate, and high mortality rate. Moreover, its onset is extremely insidious. If effective measures are not taken in time, most VTE patients will develop post-thrombotic sequelae (except for death), causing them to suffer from long-term pain, seriously affecting their quality of life and endangering their lives. Therefore, prevention of deep vein thrombosis is of paramount importance.

[0003] Critically ill patients are mostly bedridden and are at high risk for VTE (venous thrombosis). Some patients even experience muscle weakness and limited mobility due to prolonged bed rest, leading to complications such as deep vein thrombosis (DVT) and foot drop in the lower extremities. Therefore, there is an urgent need for an ankle pump exercise device that allows patients to actively exercise themselves and also provides active lower limb exercises to prevent VTE and other complications, and promote rehabilitation. Summary of the Invention

[0004] One objective of this invention is to provide an ankle pump exercise device for preventing deep vein thrombosis (DVT) in the lower extremities. This device allows patients to actively exercise themselves and also provides them with active lower limb exercises to prevent complications such as VTE and promote patient rehabilitation.

[0005] The ankle pump exercise device for preventing deep vein thrombosis in the lower extremities provided in this application adopts the following technical solution: An ankle pump exercise device for preventing deep vein thrombosis in the lower extremities according to an embodiment of the present invention includes: Base plate; The pedal is provided in two parts, and the two pedals are respectively positioned to correspond to the patient's two feet. The upper surface of the pedal is provided with a receiving cavity for accommodating the patient's feet, and a wearable component for positioning the patient's feet is provided above the receiving cavity. The mounting bracket is used to mount the pedal. The mounting bracket is raised and lowered on the base plate via a lifting assembly. The mounting bracket is U-shaped, with two triangular side plates. A rotating shaft passes through the apex of the side plates. The two ends of the rotating shaft are rotatably connected to the side plates of the mounting bracket via bearings. The rotating shaft passes through the end of the pedal closest to the patient along its length and is fixedly connected to the pedal. The pedal is actively rotated via an active rotating mechanism, which can also release the control of the pedal. A resistance mechanism applies resistance to the pedal and tilts the pedal, with the end of the pedal furthest from the patient along its length being the higher end. A touch panel is disposed on the top surface of the base plate on the side closest to the patient.

[0006] Preferably, the resistance mechanism includes multiple sets of resistance application components, which are spaced apart along the length of the pedal. Each set of resistance application components includes a base, a compression spring, a top seat, a connecting bracket, a connecting block, a first iron sheet, and a first magnetic plate. A first mounting groove is formed on the top surface of the base, and a second mounting groove is formed on the bottom surface of the top seat. The bottom end of the compression spring is inserted into the first mounting groove and abuts against the inner bottom surface of the first mounting groove. The top end of the compression spring is inserted into the second mounting groove and abuts against the inner top surface of the second mounting groove. A guide rod is provided inside the compression spring, and the compression spring is sleeved on the guide rod. The guide rod is a telescopic rod. The bottom end of the guide rod is fixedly connected to the inner bottom surface of the first mounting groove, and the top end of the guide rod is fixedly connected to the inner top surface of the second mounting groove. The top surface of the horizontal portion of the mounting bracket is provided with a support block, and a support groove is formed on the top surface of the support block. The length direction of the support groove is consistent with the length direction of the mounting bracket. The base is located in the support groove and slides along the length direction of the support groove. The connecting bracket is triangular in shape, and a connecting shaft is passed through the top corner of the connecting bracket. The connecting shaft is fixedly connected to the connecting bracket. The rotating shaft passes through the bottom end of the connecting block and is rotatably connected to the connecting block. The first iron plate is fixedly connected to the top surface of the connecting block. The bottom surface of the pedal is provided with a mating groove. The first magnetic plate is fixedly connected to the mating groove. The two ends of the first magnetic plate extend to the two ends close to the length direction of the pedal. One first magnetic plate can simultaneously magnetically attract the first iron plates of all the resistance application components. A positioning plate is fixedly installed on the inner surface of the side plate on the outer side of the mounting bracket, and a positioning plate is installed on the outer circumferential surface of the rotating shaft. The positioning plate is located on the top of the mounting bracket, and the positioning plate is located on the side of the positioning plate away from the patient. When the positioning plate is in contact with the positioning plate, the end of the pedal away from the patient in the length direction reaches the highest position. The lengths of the compression springs of the multiple sets of resistance application components and the elastic force applied to the pedal increase sequentially from the direction closer to the rotation axis to the direction farther away from the rotation axis.

[0007] Preferably, the mounting bracket is provided with a resistance adjustment component, which is used to detach part of the first iron piece from the first magnetic plate and keep it detached; N groups of resistance application components are provided, and (N-1) groups of resistance adjustment components are provided, with no resistance adjustment component provided at the group of resistance application components furthest from the rotation axis.

[0008] Preferably, a fixing frame is fixed on each side of the support block in the width direction, a second magnetic plate is fixedly connected to the top surface of each fixing frame, a side support plate is fixed at each end of the connecting bracket, the length direction of the side support plate is perpendicular to the length direction of the support block, a second iron plate is fixed on the bottom surface of each side support plate, the two ends of the second magnetic plate in the length direction extend to the two ends close to the length direction of the support block, and one second magnetic plate can simultaneously magnetically attract the second iron plates of all the resistance adjustment components; Each set of resistance adjustment components includes an adjustment block, a limit plate, a vertical plate, a horizontal electric actuator, and a lifting electric actuator; Each set of resistance adjustment components has two adjustment blocks, and the two adjustment blocks are symmetrically arranged on both sides of the width direction of a mounting bracket. The side plate of the mounting bracket is provided with a movable groove for the adjustment blocks to rise and fall. Each adjustment block corresponds to a limiting plate, a vertical plate, a horizontal electric actuator, and a lifting electric actuator. The upright plate is fixedly connected to the top surface of the corresponding adjusting block. The longitudinal width of the upright plate is adapted to the longitudinal thickness of the side support plate. The limiting plate is slidably disposed on the top surface of the corresponding upright plate. The length direction of the limiting plate is consistent with the length direction of the side support plate. An auxiliary plate is provided below each of the limiting plates. The top surface of the auxiliary plate is fixedly connected to the bottom surface of the limiting plate. Connecting plates are provided at both ends of the bottom surface of the auxiliary plate. The cylinder of the horizontal electric push rod is fixedly connected to the sides of the adjusting block in the width direction. The piston rod of the horizontal electric push rod is fixedly connected to the corresponding connecting plate. When the piston rod of the horizontal electric actuator extends, the limiting plate moves away from the side support plate, and the limiting plate can slide until the limiting plate does not obstruct the side support plate; When the piston rod of the horizontal electric actuator retracts, the limiting plate moves toward the side support plate, and the limiting plate can slide until the side support plate is exposed between the inserted adjusting block and the limiting plate; The adjusting block is raised and lowered by a lifting electric push rod. After the side support plate is locked between the adjusting block and the limiting plate, the adjusting block drives the side support plate to rise and fall. The adjusting block can rise until the first iron piece of the corresponding resistance application component contacts the first magnetic plate, and the adjusting block can also fall until the second iron piece of the corresponding resistance adjustment component contacts the second magnetic plate. When the resistance adjustment assembly is needed to detach the first iron piece from the first magnetic plate and keep it detached: the piston rod of the lifting electric push rod extends, and the piston rod of the horizontal electric push rod extends first to prevent the adjusting block from rising to the side support plate. Then, the piston rod of the horizontal electric push rod extends, so that the side support plate is inserted between the adjusting block and the limiting plate. Then, the piston rod of the lifting electric push rod retracts, so that the adjusting block descends until the second iron piece contacts the second magnetic plate.

[0009] Preferably, the active rotation mechanism is located at one outer end of the rotating shaft. The active rotation mechanism includes a docking rod, a horizontal linear module, and a rotating assembly. The length direction of the docking rod is consistent with the axial direction of the rotating shaft. The outer end face of the rotating shaft is provided with a docking groove for the docking rod to pass through. The docking rod is a square rod, and the shape of the docking groove is adapted to the shape of the docking rod. The horizontal linear module is mounted on the outer surface of the mounting bracket, and the horizontal linear module drives the docking rod to move along the length direction of the rotation axis; The rotating assembly drives the horizontal linear module and the docking rod to rotate together along the central axis of the rotating shaft.

[0010] Preferably, the rotating assembly includes a fixed plate, a rotary motor, a drive rod, a driving gear, a driven gear, and a synchronous toothed belt; the fixed plate is horizontally arranged, and the rotary motor is horizontally mounted on the fixed plate; the drive rod includes an integrally formed circular segment and a square segment, the circular segment being coaxially connected to the end of the square segment away from the rotation axis, the outer diameter of the circular segment being smaller than the side length of the square segment, the square segment of the drive rod passing through the docking rod and slidingly connected to the docking rod, the end of the docking rod away from the rotation axis having a drive groove for the square segment of the drive rod to slide, the docking rod sliding in a direction away from the rotation axis until the docking rod passes through the docking groove and remains stable, the square segment of the drive rod is still located in the drive groove; The fixed plate is provided with a support seat for supporting the circular segment of the drive rod. The support seat is rotatably connected to the circular segment of the drive rod through a bearing. The driving gear is coaxially connected to the output shaft of the rotary motor, and the driven gear is coaxially connected to the circular segment of the drive rod. The driven gear and the driving gear are connected through the synchronous toothed belt. The fixed plate is also provided with tensioning wheels, which are located on both sides of the synchronous toothed belt in the width direction to tension the synchronous toothed belt. An auxiliary block is fixedly installed on the output end of the horizontal linear module. A retaining ring plate is provided around the outer circumference of the docking rod. The retaining ring plate is rotatably connected to the auxiliary block and slidably connected to it. The auxiliary block is C-shaped. The outer circumference of the retaining ring plate is circular. A retaining groove is provided on the inner side of the auxiliary block for the retaining ring plate to be engaged. The upper side, lower side, and horizontal side of the retaining ring plate are all engaged in the retaining groove. The output end of the horizontal linear module drives the auxiliary block to move along the length direction of the rotation axis. The auxiliary block drives the docking rod to move along the length direction of the rotation axis through the snap ring plate. When the docking rod moves, the square segment of the drive rod moves within the drive groove.

[0011] Preferably, a limiting wheel is provided in the slot, and multiple limiting wheels are spaced apart along the outer peripheral surface of the snap ring plate. The outer peripheral surface of the limiting wheel contacts the outer peripheral surface of the snap ring plate. The limiting wheels are arranged on the upper and lower sides of the snap ring plate. The limiting wheel is rotatably connected to the auxiliary block through a pin. The pin is fixedly connected to the inner surface of both sides of the slot in the thickness direction. The limiting wheel is rotatably connected to the corresponding pin.

[0012] Preferably, the lifting assembly is located between the two mounting brackets; The lifting assembly includes a fixed frame, a lifting motor, a one-way screw, and a lifting block. The fixed frame has a lifting groove from top to bottom for the lifting block to move up and down. The two opposite sides of the lifting block are clearance-fitted with the inner side of the lifting groove. The lifting motor is installed on the top of the fixed frame, and the output shaft of the lifting motor is vertically downward. The top end of the one-way screw is coaxially connected to the output shaft of the lifting motor, and the bottom end of the one-way screw is rotatably connected to the bottom end of the lifting groove through a bearing. The one-way screw passes through the lifting block and is threadedly connected to the lifting block. A limiting block is fixedly connected to the side of the lifting block near the mounting bracket. The lifting groove is provided with limiting grooves on both sides corresponding to the two mounting brackets for the lifting blocks to move up and down. The limiting grooves penetrate the top and side surfaces of the fixed frame. A limiting shaft is fixedly connected to the side of each limiting block away from the lifting block. The outer diameter of the limiting shaft is smaller than the outer diameter of the rotating shaft. The end of each limiting shaft away from the corresponding limiting block passes into the rotating shaft and is rotatably connected to the rotating shaft through a bearing.

[0013] Preferably, a support spring is provided on the bottom surface of the horizontal portion of the mounting bracket. The bottom end of the support spring is fixed to the top surface of the base plate, and the top end of the support spring is fixed to the bottom surface of the mounting bracket. A limit rod is provided at each of the four corners of the mounting bracket. The top end of the limit rod extends out of the horizontal portion of the mounting bracket and is slidably connected to the mounting bracket.

[0014] Preferably, the wearable component includes anti-slip strips and buckles. One pedal corresponds to two anti-slip strips, and the two anti-slip strips are located at both ends near the length direction of the pedal. One anti-slip strip corresponds to one buckle. The two ends of the anti-slip strip are the starting end and the ending end, respectively. The starting end of the anti-slip strip is fixedly connected to the outer side of the pedal in the width direction. The buckle is fixedly connected to the upper surface of the pedal in the width direction near the inner side. The ending end of the anti-slip strip passes through the opening of the buckle and wraps back to the starting end of the anti-slip strip and is attached to it by a Velcro assembly. The hook and loop fastener assembly includes a rough surface and a hook surface, which are respectively disposed on the side of the starting end and the ending end that are close to each other, and the rough surface and the hook surface are attached together.

[0015] In summary, this application includes the following beneficial technical effects: The ankle pump exercise device for preventing deep vein thrombosis (DVT) in the lower extremities according to embodiments of the present invention, by adopting the above-mentioned technical solution, not only solves the problems of poor adaptability, single exercise mode, and cumbersome operation of traditional ankle pump exercise devices, but also realizes an integrated design from "prevention" to "rehabilitation". Through the design of multiple sets of gradient resistance to conform to the characteristics of muscle exertion, it can realize the synergy of active and passive exercise modes, adapting to the different usage needs of patients with different conditions, different muscle strengths, and different stages. When the patient is unable to move, the automatic exercise mode is used to effectively promote venous blood return in the lower extremities and prevent complications such as VTE. When the patient is able to move, the automatic exercise mode is turned off, and the patient can exercise by stepping on the pedals to promote early rehabilitation. The resistance can be adjusted according to the rehabilitation stage, effectively meeting the core needs of critically ill bedridden patients for the prevention and rehabilitation of DVT in the lower extremities. It can prevent complications such as VTE and promote rehabilitation treatment, and has high clinical application value.

[0016] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0018] Figure 1 This is a schematic diagram of the overall structure of an ankle pump exercise device for preventing deep vein thrombosis in the lower extremities, as described in this application.

[0019] Figure 2 This is a schematic diagram illustrating the structure of the resistance mechanism in an embodiment of this application.

[0020] Figure 3 This is a schematic diagram illustrating the structure of the resistance application component in an embodiment of this application.

[0021] Figure 4 This is a schematic diagram illustrating the structure located on one side of the mounting bracket in the width direction of the resistance adjustment assembly in this application embodiment.

[0022] Figure 5 This is a schematic diagram illustrating the structure of the active rotation mechanism in an embodiment of this application.

[0023] Figure 6 This is a cross-sectional structural diagram of the auxiliary block used in the embodiments of this application.

[0024] Figure 7 This is a structural schematic diagram used to illustrate the lifting component in an embodiment of this application.

[0025] Figure 8 This is a structural diagram used to illustrate the control panel in an embodiment of this application.

[0026] Figure 9 This is a schematic diagram illustrating the structure of placing the mounting rack on the base plate and placing the display screen on the mounting plate in this embodiment of the application.

[0027] Figure 10 This is a schematic diagram showing the location of the reinforcing plate in an embodiment of this application.

[0028] Figure label: 1. Base plate; 2. Pedal; 21. Receiving cavity; 22. Wearing component; 221. Anti-slip strip; 2211. Starting end; 22111. Textured surface; 2212. Ending end; 22121. Hook surface; 222. Buckle; 23. Mating groove; 3. Install bracket; 31. Positioning plate; 4. Rotating shaft; 41. Connecting groove; 42. Positioning plate; 5. Resistance mechanism; 51. Resistance application component; 511. Base; 5111. Sliding block; 512. Compression spring; 5121. Guide rod; 513. Top seat; 514. Connecting bracket; 5141. Side support plate; 5142. Second iron plate; 515. Connecting block; 516. First iron plate; 517. First magnetic plate; 518. Support block; 5181. Support groove; 5182. Sliding groove; 519. Fixing frame; 5191. Second magnetic plate; 52. Resistance adjustment assembly; 521. Adjustment block; 5211. Dovetail groove; 522. Limiting plate; 5221. T-slot; 523. Vertical plate; 5231. T-block; 524. Auxiliary plate; 5241. Dovetail block; 525. Connecting plate; 526. Horizontal electric actuator; 527. Lifting electric actuator; 6. Active rotation mechanism; 61. Connecting rod; 611. Drive slot; 612. Snap ring plate; 62. Horizontal linear module; 63. Rotating assembly; 631. Fixing plate; 632. Rotary motor; 633. Drive rod; 6331. Circular segment; 6332. Square segment; 634. Drive gear; 635. Driven gear; 636. Synchronous toothed belt; 637. Tensioner; 64. Support base; 65. Auxiliary block; 651. Snap slot; 652. Limiting wheel; 7. Lifting assembly; 71. Fixed frame; 711. Lifting groove; 712. Limiting groove; 72. Lifting motor; 73. One-way lead screw; 74. Lifting block; 75. Limiting block; 751. Limiting shaft; 76. Support spring; 77. Limiting rod; 771. Anti-detachment round plate; 8. Control Panel; 81. Resistance level adjustment button; 811. First resistance level touch button; 812. Second resistance level touch button; 813. Third resistance level touch button; 82. Automatic exercise mode button; 821. First-level automatic touch button; 822. Second-level automatic touch button; 823. Third-level automatic touch button; 83. Upward touch button; 84. Downward touch button; 85. Game mode touch button; 9. Display screen; 91. Placement rack; 92. Auxiliary bracket; 921. Triangular plate; 922. Mounting shaft; 923. Mounting plate; 924. Reinforcing plate; 93. Pressure sensor; 94. Insole. Detailed Implementation

[0029] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0030] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0031] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0032] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0034] In the specification and claims of this invention, the terms "first" and "second" may explicitly or implicitly include one or more of those features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] The ankle pump exercise device for preventing deep vein thrombosis of the lower extremities according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.

[0038] Reference Figure 1-10 An ankle pump exercise device for preventing deep vein thrombosis in the lower extremities includes a base plate 1, which is placed on the ground. Two pedals 2 are mounted on the top surface of the base plate 1, each corresponding to a different position on the patient's feet. A touch panel is located on the top surface of the base plate 1, closer to the patient, allowing the patient to control the ankle pump exercise device.

[0039] The upper surface of the pedal 2 is provided with a receiving cavity 21 for accommodating the patient's foot, and a wearable component 22 for positioning the patient's foot is provided above the receiving cavity 21.

[0040] The wearable component 22 includes an anti-slip band 221 and a buckle 222. The anti-slip band 221 is made of elastic nylon, and the buckle 222 is made of metal. One pedal 2 corresponds to two anti-slip bands 221, and the two anti-slip bands 221 are located at both ends near the length direction of the pedal 2. One anti-slip band 221 corresponds to one buckle 222. The two ends of the anti-slip band 221 are the starting end 2211 and the ending end 2212, respectively. The starting end 2211 of the anti-slip band 221 is fixedly connected to the outer side of the pedal 2 in the width direction. The buckle 222 is fixedly connected to the top surface of the pedal 2 in the width direction near the inner side. The ending end 2212 of the anti-slip band 221 passes through the opening of the buckle 222 and wraps back to the starting end 2211 of the anti-slip band 221 through a Velcro assembly. The Velcro assembly includes a textured surface 22111 and a hook surface 22121. The textured surface 22111 and the hook surface 22121 are respectively disposed on the side of the starting end 2211 and the ending end 2212 that are close to each other. In this embodiment, the textured surface 22111 is fixed to the starting end 2211, and the hook surface 22121 is disposed at the ending end 2212. The textured surface 22111 and the hook surface 22121 are attached together, so that the anti-slip strip 221 fixes the patient's foot to the pedal 2 and prevents the patient's foot from leaving the pedal 2.

[0041] The pedal 2 is mounted on the top surface of the base plate 1 via the mounting bracket 3. The mounting bracket 3 is U-shaped, and the two side plates of the mounting bracket 3 are triangular. A rotating shaft 4 is inserted through the top corner of the side plate of the mounting bracket 3. The two ends of the rotating shaft 4 are rotatably connected to the side plate of the mounting bracket 3 via bearings. The rotating shaft 4 passes through the end of the pedal 2 closest to the patient in the length direction and is fixedly connected to the pedal 2.

[0042] A resistance mechanism 5 is provided below the pedal 2. The resistance mechanism 5 applies resistance to the pedal 2 and tilts the pedal 2. The end of the pedal 2 that is away from the patient in the length direction is the higher end. This can simulate the initial posture of the human body's natural ankle pump movement, guide the patient to perform standardized flexion and extension movements, improve the effect of venous blood return in the lower limbs, and effectively prevent deep vein thrombosis in the lower limbs.

[0043] The resistance mechanism 5 includes multiple sets of resistance application components 51, which are equidistantly arranged along the length of the pedal 2. Each set of resistance application components 51 includes a base 511, a compression spring 512, a top seat 513, a connecting bracket 514, a connecting block 515, a first iron plate 516, and a first magnetic plate 517.

[0044] Both the base 511 and the top seat 513 are cylindrical. The top surface of the base 511 is provided with a first mounting groove, and the bottom surface of the top seat 513 is provided with a second mounting groove. The bottom end of the compression spring 512 is inserted into the first mounting groove and abuts against the inner bottom surface of the first mounting groove. The top end of the compression spring 512 is inserted into the second mounting groove and abuts against the inner top surface of the second mounting groove, thereby applying resistance to the pedal 2.

[0045] The top surface of the horizontal part of the mounting bracket 3 is provided with a support block 518. A support groove 5181 is provided on the top surface of the support block 518. The length direction of the support groove 5181 is consistent with the length direction of the mounting bracket 3. The base 511 is located in the support groove 5181 and slides along the length direction of the support groove 5181.

[0046] The connecting bracket 514 is triangular in shape, and a connecting shaft is provided at the top corner of the connecting bracket 514. The connecting shaft is fixedly connected to the connecting bracket 514. The rotating shaft 4 passes through the bottom end of the connecting block 515 and is rotatably connected to the connecting block 515. The first iron plate 516 is fixedly connected to the top surface of the connecting block 515. The bottom surface of the pedal 2 is provided with a mating groove 23. The first magnetic plate 517 is fixedly connected in the mating groove 23. The two ends of the first magnetic plate 517 extend to the two ends close to the length direction of the pedal 2. One first magnetic plate 517 can simultaneously magnetically attract the first iron plate 516 of all resistance application components 51.

[0047] A guide rod 5121 is provided inside the compression spring 512. The compression spring 512 is sleeved on the outside of the guide rod 5121, which is a telescopic rod. The bottom end of the guide rod 5121 is fixedly connected to the inner bottom surface of the first mounting groove, and the top end of the guide rod 5121 is fixedly connected to the inner top surface of the second mounting groove. The guide rod 5121 provides limiting guidance for the deformation of the compression spring 512 and adapts to the lifting and lowering of the connecting bracket 514, ensuring the stability of the lifting and lowering of the connecting bracket 514, thereby ensuring the stability of the swing of the pedal 2. The compression spring 512, together with the telescopic guide rod 5121, can provide stable elastic resistance for the pedal 2 and accurately guide the extension and retraction direction of the compression spring 512, preventing the compression spring 512 from deviating or twisting, and ensuring the stability of the applied resistance.

[0048] The outer peripheral surface of the base 511 is clearance-fitted with the inner side surfaces on both sides of the support groove 5181 in the width direction. Sliding blocks 5111 are symmetrically arranged on both radial sides of the base 511. The sliding blocks 5111 are fixedly connected to the outer peripheral surface of the slide block. Sliding grooves 5182 are opened outward on both sides of the support groove 5181 in the width direction for the sliding blocks 5111 to slide. The thickness of the sliding block 5111 in the longitudinal direction is adapted to the width of the sliding groove 5182 in the longitudinal direction. When the connecting bracket 514 is raised and lowered, the base 511 slides in the support groove 5181 and the sliding blocks 5111 slide in the sliding groove 5182, preventing the base 511 from detaching from the support block 518. At the same time, it further improves the stability of the pedal 2 swing.

[0049] A positioning plate 31 is fixedly installed on the inner surface of the side plate on the outer side of the mounting bracket 3, and a positioning plate 42 is installed on the outer circumference of the rotating shaft 4. The positioning plate 31 is located on the top of the mounting bracket 3, and the positioning plate 42 is located on the side of the positioning plate 31 away from the patient. When the positioning plate 42 is in contact with the positioning plate 31, the end of the pedal 2 away from the patient in the length direction reaches its highest position. Each time the patient releases force on the pedal 2, the positioning plate 42 is brought into contact with the positioning plate 31 through the cooperation of the compression spring 512, the positioning plate 31, and the positioning plate 42. Through the cooperation of the positioning plate 31 and the positioning plate 42, the initial position of the pedal 2 can be precisely limited, ensuring that the initial posture is consistent for each exercise and guaranteeing the standardization and repeatability of the exercise.

[0050] The length of the compression spring 512 of the three sets of resistance application components 51 and the elastic force applied to the pedal 2 increase sequentially from the direction closer to the rotation axis 4 to the direction farther away from the rotation axis 4. This can simulate the muscle force intensity at different positions during human ankle pump movement, making the exercise more in line with human physiological laws, improving the lower limb muscle training effect, further promoting venous blood return, and enhancing the thrombosis prevention effect.

[0051] The mounting bracket 3 is equipped with a resistance adjustment component 52, which is used to detach part of the first iron plate 516 from the first magnetic plate 517 and keep it detached, so as to adjust the resistance applied by the resistance application component 51 to the pedal 2, and adapt to patients with different muscle strengths and different rehabilitation stages.

[0052] N groups of resistance application components 51 are set, and (N-1) groups of resistance adjustment components 52 are set. In this example, three groups of resistance application components 51 are set, and two groups of resistance adjustment components 52 are set. No resistance adjustment component 52 is set at the group of resistance application components 51 furthest from the rotating shaft 4, so that at least one group of resistance application components 51 applies resistance to the pedal 2.

[0053] A fixing bracket 519 is fixed on each side of the support block 518 in the width direction, and a second magnetic plate 5191 is fixedly connected to the top surface of each fixing bracket 519. Except for the connecting bracket 514 furthest from the rotating shaft 4, a side support plate 5141 is fixed to each end of the other two connecting brackets 514. The length direction of the side support plate 5141 is perpendicular to the length direction of the support block 518, and a second iron plate 5142 is fixed to the bottom surface of each side support plate 5141. The two ends of the second magnetic plate 5191 extend to the two ends close to the length direction of the support block 518. One second magnetic plate 5191 can simultaneously magnetically attract the second iron plates 5142 of all resistance adjustment components 52.

[0054] Each resistance adjustment assembly 52 includes an adjustment block 521, a limiting plate 522, a vertical plate 523, a horizontal electric actuator 526, and a lifting electric actuator 527. Each resistance adjustment assembly 52 has two adjustment blocks 521, which are symmetrically arranged on both sides of the width of a mounting bracket 3. The side plate of the mounting bracket 3 has movable slots for the adjustment blocks 521 to rise and fall. One adjustment block 521 corresponds to one limiting plate 522, one vertical plate 523, one horizontal electric actuator 526, and one lifting electric actuator 527.

[0055] The upright plate 523 is fixedly connected to the top surface of the corresponding adjusting block 521. The longitudinal width of the upright plate 523 is adapted to the longitudinal thickness of the side support plate 5141. The limiting plate 522 is slidably disposed on the top surface of the corresponding upright plate 523. The length direction of the limiting plate 522 is consistent with the length direction of the side support plate 5141. A T-shaped block 5231 is provided on the top surface of the upright plate 523. A T-shaped groove 5221 for the T-shaped block 5231 to slide is provided on the bottom surface of the limiting plate 522. When the limiting plate 522 slides, the T-shaped block 5231 slides in the T-shaped groove 5221 to ensure that the limiting plate 522 slides stably above the corresponding upright plate 523 and to prevent the limiting plate 522 from detaching from the corresponding upright plate 523.

[0056] Below each limiting plate 522, there is an auxiliary plate 524. The top surface of the auxiliary plate 524 is fixedly connected to the bottom surface of the limiting plate 522. A dovetail block 5241 is provided in the middle of the bottom surface of the auxiliary plate 524. The top surface of the adjusting block 521 is provided with a dovetail groove 5211 for the dovetail block 5241 to slide, thereby improving the sliding stability of the auxiliary plate 524 and thus improving the sliding stability of the limiting plate 522.

[0057] The bottom surface of the auxiliary plate 524 has connecting plates 525 integrally formed at both ends. The cylinder of the horizontal electric actuator 526 is fixedly connected to the sides of the adjusting block 521 in the width direction. The piston rod of the horizontal electric actuator 526 is fixedly connected to the corresponding connecting plate 525. When the piston rod of the horizontal electric actuator 526 extends, the limiting plate 522 moves away from the side support plate 5141 and can slide until the limiting plate 522 does not obstruct the side support plate 5141. When the piston rod of the horizontal electric actuator 526 retracts, the limiting plate 522 moves towards the side support plate 5141 and can slide until the side support plate 5141 is exposed between the insertion adjusting block 521 and the limiting plate 522.

[0058] The adjusting block 521 is raised and lowered via a lifting electric actuator 527, which is fixedly installed on the top surface of the horizontal portion of the mounting bracket 3. The piston rod of the lifting electric actuator 527 faces the same direction and is fixedly connected to the bottom surface of the adjusting block 521. After the side support plate 5141 is engaged between the adjusting block 521 and the limiting plate 522, the adjusting block 521 drives the side support plate 5141 to rise and fall. The adjusting block 521 can rise until the first iron piece 516 of the corresponding resistance application component 51 contacts the first magnetic plate 517, and the adjusting block 521 can also descend until the second iron piece 5142 of the corresponding resistance adjustment component 52 contacts the second magnetic plate 5191.

[0059] When the resistance adjustment assembly 52 is needed to disengage the first iron piece 516 from the first magnetic plate 517 and keep it disengaged: the piston rod of the lifting electric push rod 527 extends, and the piston rod of the horizontal electric push rod 526 extends first to prevent the adjusting block 521 from rising to the side support plate 5141. Then the piston rod of the horizontal electric push rod 526 extends, so that the side support plate 5141 is inserted between the adjusting block 521 and the limiting plate 522. Then the piston rod of the lifting electric push rod 527 retracts, so that the adjusting block 521 descends until the second iron piece 5142 contacts the second magnetic plate 5191.

[0060] The adjusting block 521 is raised and lowered by the lifting electric push rod 527, and the limit plate 522 is slidable by the telescopic cylinder. It can precisely control the locking and releasing of the side support plate 5141, thereby enabling and disabling the resistance application component 51. The adjustment process is precise and stable, avoiding harm to the patient.

[0061] The control panel 8 is equipped with a resistance level adjustment button 81, which is used to adjust the resistance applied by the resistance application component 51 to the pedal 2. The resistance level adjustment button 81 includes a first-level resistance touch button 811, a second-level resistance touch button 812, and a third-level resistance touch button 813. The resistance level adjustment button 81 is electrically connected to the horizontal electric actuator 526 and the vertical electric actuator 527 of the resistance adjustment component 52.

[0062] When the first resistance touch button 811 is pressed, the first resistance touch button 811 sends a first resistance signal to the control system of the two sets of resistance adjustment components 52. The two sets of resistance adjustment components 52 act according to the current situation to ensure that only the set of resistance application components 51 furthest from the rotating shaft 4 applies resistance to the pedal 2, and the pedal 2 is in the first resistance position. When the second resistance touch button 812 is pressed, the second resistance touch button 812 feeds back a second resistance signal to the control system of a set of resistance adjustment components 52 that are far away from the rotation axis 4. The two sets of resistance adjustment components 52 act according to the current situation to ensure that the set of resistance application components 51 far away from the rotation axis 4 and the second set of resistance application components 51 far away from the rotation axis 4 apply resistance to the pedal 2, and the pedal 2 is in the second resistance position. When the three-level resistance touch button is pressed, the three-level resistance touch button sends a three-level signal to the control system of a set of resistance adjustment components 52 that are far away from the rotation axis 4. The two sets of resistance adjustment components 52 act according to the current situation to ensure that all three sets of resistance application components 51 apply resistance to the pedal 2. The pedal 2 is in the three-level position, at which time the resistance received by the pedal 2 is the greatest.

[0063] The pedal 2 is actively rotated via the active rotation mechanism 6, allowing patients with limited mobility to choose to receive active lower limb exercises from the device. The active rotation mechanism 6 can also deactivate the control over the pedal 2, allowing patients with mobility to independently perform exercises using the device after deactivating the control of the active rotation mechanism 6. This adapts to the needs of patients with different conditions and muscle strengths, preventing complications such as VTE and promoting early rehabilitation.

[0064] The active rotation mechanism 6 is located at one end of the outer side of the rotating shaft 4. The active rotation mechanism 6 includes a docking rod 61, a horizontal linear module 62, and a rotating component 63. The length direction of the docking rod 61 is consistent with the axial direction of the rotating shaft 4. The outer end face of the rotating shaft 4 is provided with a docking groove 41 for the docking rod 61 to pass through. The docking rod 61 is a square rod, and the shape of the docking groove 41 is adapted to the shape of the docking rod 61 so that the rotating shaft 4 can be driven to rotate when the docking rod 61 rotates.

[0065] The horizontal linear module 62 is mounted on the outer surface of the mounting bracket 3, and the horizontal linear module 62 drives the docking rod 61 to move along the length direction of the rotating shaft 4.

[0066] The rotating component 63 drives the horizontal linear module 62 and the docking rod 61 to rotate together along the central axis of the rotating shaft 4.

[0067] The rotating assembly 63 includes a fixed plate 631, a rotary motor 632, a drive rod 633, a driving gear 634, a driven gear 635, and a synchronous toothed belt 636. The fixed plate 631 is horizontally arranged, and the rotary motor 632 is horizontally mounted on the fixed plate 631. The drive rod 633 includes an integrally formed circular segment 6331 and a square segment 6332. The circular segment 6331 is coaxially connected to the end of the square segment 6332 away from the rotation axis 4. The outer diameter of the circular segment 6331 is smaller than the side length of the square segment 6332. The square segment 6332 of the drive rod 633 passes into the docking rod 61 and slides with the docking rod 61. The end of the docking rod 61 away from the rotation axis 4 is provided with a drive groove 611 for the square segment 6332 of the drive rod 633 to slide. When the docking rod 61 slides in the direction away from the rotation axis 4 until the docking rod 61 passes into the docking groove 41 and remains stable, the square segment 6332 of the drive rod 633 is still located in the drive groove 611.

[0068] The fixed plate 631 is provided with a support seat 64 for supporting the circular segment 6331 of the drive rod 633. The support seat 64 is rotatably connected to the circular segment 633 of the drive rod 633 through a bearing. The driving gear 634 is coaxially connected to the output shaft of the rotary motor 632, and the driven gear 635 is coaxially connected to the circular segment 6331 of the drive rod 633. The driven gear 635 and the driving gear 634 are connected through a synchronous toothed belt 636. The fixed plate 631 is also provided with a tensioning wheel 637. The tensioning wheel 637 is rotatably mounted on the fixed plate 631 through a stand. The stand is fixedly connected to the fixed plate 631, and the tensioning wheel 637 is rotatably connected to the stand. The tensioning wheels 637 are located on both sides of the synchronous toothed belt 636 in the width direction to tension the synchronous toothed belt 636. The tensioning wheels 637 on both sides of the synchronous toothed belt 636 in the width direction are close to the two ends of the synchronous toothed belt 636, so that the two ends of the synchronous toothed belt 636 are more evenly stressed.

[0069] An auxiliary block 65 is fixedly installed on the output end of the horizontal linear module 62. A retaining ring plate 612 is arranged around the outer circumference of the docking rod 61. The retaining ring plate 612 is rotatably connected to the auxiliary block 65 and slidably connected to it. The auxiliary block 65 is C-shaped, and the outer circumference of the retaining ring plate 612 is circular. A retaining groove 651 for the retaining ring plate 612 to be engaged is opened on the inner side of the auxiliary block 65. The upper side, lower side, and horizontal side of the retaining ring plate 612 are all engaged in the retaining groove 651, so that the auxiliary block 65 drives the docking rod 61 to move along the axis of the rotating shaft 4 through the retaining ring plate 612.

[0070] The output end of the horizontal linear module 62 drives the auxiliary block 65 to move along the length direction of the rotating shaft 4. The auxiliary block 65 drives the docking rod 61 to move along the length direction of the rotating shaft 4 through the snap ring plate 612. When the docking rod 61 moves, the square segment 6332 of the drive rod 633 moves in the drive groove 611.

[0071] After the docking rod 61 is inserted into the docking groove 41, the rotary motor 632 drives the drive gear 634 to rotate along the central axis of the rotating shaft 4. The drive gear 634 drives the driven gear 635 to rotate through the synchronous toothed belt 636. The driven gear 635 drives the drive rod 633 to rotate. The drive rod 633 drives the docking rod 61 to rotate through the square segment 6332. The docking rod 61 drives the rotating shaft 4 to rotate.

[0072] A limiting wheel 652 is provided in the slot 651. Multiple limiting wheels 652 are spaced apart along the outer circumferential surface of the locking ring plate 612. The outer circumferential surface of the limiting wheel 652 contacts the outer circumferential surface of the locking ring plate 612. The limiting wheels 652 are arranged on the upper and lower sides of the locking ring plate 612. The limiting wheel 652 is rotatably connected to the auxiliary block 65 through a pin. The pin is fixedly connected to the inner surface on both sides of the slot 651 in the thickness direction. The limiting wheel 652 is rotatably connected to the corresponding pin. The pin passes through the limiting wheel 652 and is coaxially connected to the limiting wheel 652. When the docking rod 61 rotates along the central axis of the rotating shaft 4, the friction between the docking rod 61 and the auxiliary block 65 is rolling friction, which reduces the risk of jamming during the rotation of the drive rod 633, the docking rod 61, and the rotating shaft 4.

[0073] The control panel 8 is equipped with an automatic exercise mode button 82, which is used to activate or deactivate the control of the active rotation mechanism 6 on the pedal 2. The automatic exercise mode button 82 is electrically connected to the control system of the horizontal linear module 62.

[0074] When the automatic exercise mode button 82 is pressed for the first time, the horizontal linear module 62 controls the docking rod 61 to enter the docking groove 41, and the active rotation mechanism 6 starts to control the pedal 2; when the automatic exercise mode button 82 is pressed again, the horizontal linear module 62 controls the docking rod 61 to disengage from the docking groove 41, and the active rotation mechanism 6 releases the control of the pedal 2.

[0075] The control panel 8 is equipped with an automatic exercise level adjustment button, which is used to adjust the angle of rotation of the rotating shaft 4 controlled by the rotary motor 632. The automatic exercise level adjustment button includes a first-level automatic touch button 821, a second-level automatic touch button 822, and a third-level automatic touch button 823. The automatic exercise level adjustment button is electrically connected to the rotary motor 632.

[0076] When the first-gear automatic touch button 821 is pressed, the rotary motor 632 controls the rotating shaft 4 to reciprocate 15°. When the second-level automatic touch button 822 is pressed, the rotary motor 632 controls the rotating shaft 4 to reciprocate 30°. When the three-speed automatic touch button is pressed, the rotary motor 632 controls the rotating shaft 4 to reciprocate by 45°.

[0077] The rotary motor 632 needs to be turned on first by pressing the automatic exercise mode button 82. At this time, when the automatic exercise level adjustment button is pressed, the corresponding automatic exercise level adjustment button will respond.

[0078] The mounting bracket 3 is mounted on the base plate 1 via a lifting assembly 7. The height of the mounting bracket 3 can be adjusted via the lifting assembly 7 to accommodate different patient needs.

[0079] The lifting assembly 7 is located between two mounting brackets 3. The lifting assembly 7 includes a fixed frame 71, a lifting motor 72, a one-way screw 73, and a lifting block 74. The bottom surface of the fixed frame 71 is fixed to the top surface of the base plate 1. The fixed frame 71 has a lifting groove 711 from top to bottom for the lifting block 74 to move. The two opposite sides of the lifting block 74 are clearance-fitted with the inner side of the lifting groove 711. The lifting motor 72 is installed on the top of the fixed frame 71. The output shaft of the lifting motor 72 is vertically downward. The top end of the one-way screw 73 is coaxially connected to the output shaft of the lifting motor 72. The bottom end of the one-way screw 73 is rotatably connected to the bottom end of the lifting groove 711 through a bearing. The one-way screw 73 passes through the lifting block 74 and is threadedly connected to the lifting block 74.

[0080] A limiting block 75 is fixedly connected to the side of the lifting block 74 near the mounting bracket 3. The lifting groove 711 is provided with limiting grooves 712 on both sides corresponding to the two mounting brackets 3 for the lifting of the limiting block 75. The limiting grooves 712 penetrate the top and side surfaces of the fixed frame 71. Each limiting block 75 is fixedly connected to a limiting shaft 751 on the side away from the lifting block 74. The outer diameter of the limiting shaft 751 is smaller than the outer diameter of the rotating shaft 4. The end of each limiting shaft 751 away from the corresponding limiting block 75 passes into the rotating shaft 4 and is rotatably connected to the rotating shaft 4 through a bearing.

[0081] The lifting motor 72 drives the one-way lead screw 73 to rotate, and the one-way lead screw 73 drives the lifting block 74 to move up and down along the lifting groove 711. The lifting block 74 drives the limit block 75 to move up and down, and the limit block 75 drives the corresponding rotating shaft 4 to move up and down through the corresponding limit shaft 751.

[0082] To improve support for the mounting bracket 3, a support spring 76 is provided on the bottom surface of the horizontal part of the mounting bracket 3. The bottom end of the support spring 76 is fixed to the top surface of the base plate 1, and the top end of the support spring 76 is fixed to the bottom surface of the mounting bracket 3. Each mounting bracket 3 is provided with a limit rod 77 at each of its four corners. The top end of the limit rod 77 extends out of the horizontal part of the mounting bracket 3 and is slidably connected to the mounting bracket 3 to ensure the stability of the lifting and lowering of the mounting bracket 3. An anti-detachment circular plate 771 is coaxially connected to the top end of the limit rod 77. The outer diameter of the anti-detachment circular plate 771 is larger than the outer diameter of the limit rod 77 to prevent the limit rod 77 from detaching from the mounting bracket 3.

[0083] The touch panel is equipped with an upward touch button 83 and a downward touch button 84, both of which are electrically connected to the lifting motor 72. Pressing the upward touch button 83 once rotates the output shaft of the lifting motor 72 one revolution clockwise, raising the mounting bracket 3 by 1 cm; pressing the downward touch button 84 once rotates the output shaft of the lifting motor 72 one revolution counterclockwise, lowering the mounting bracket 3 by 1 cm. The patient can press the touch buttons multiple times as needed to adjust the height of the mounting bracket 3.

[0084] All motors (including the drive source for the horizontal linear module 62) and electric actuators in this embodiment have a self-locking function. All bearings in this embodiment are ball bearings.

[0085] In summary, the overall technical solution of this application not only solves the problems of poor adaptability, single exercise mode, and cumbersome operation of traditional ankle pump exercise devices, but also achieves an integrated design from "prevention" to "rehabilitation." Through a multi-gradient resistance design that conforms to muscle exertion characteristics, it can achieve coordinated active and passive exercise modes, adapting to the different needs of patients with different conditions, muscle strengths, and stages. When patients are unable to move, the automatic exercise mode is used to effectively promote venous blood return in the lower limbs and prevent complications such as VTE. When patients are able to move, the automatic exercise mode is turned off, and patients can exercise by manually stepping on pedal 2 to promote early rehabilitation. The resistance can be adjusted according to the rehabilitation stage, effectively meeting the core needs of critically ill bedridden patients for the prevention and rehabilitation of deep vein thrombosis in the lower limbs. It can both prevent complications such as VTE and promote rehabilitation treatment, and has high clinical application value.

[0086] The control panel 8 can also be equipped with a game mode touch button 85. In order to match the game mode, a placement rack 91 is provided on the top surface of the base plate 1. The placement rack 91 is stably positioned on the base plate 1 by its own weight. A display screen 9 for displaying the game screen is placed on top of the placement rack 91. The display screen 9 is mounted on the top of the placement rack 91 by an auxiliary bracket 92. The auxiliary support 92 includes a triangular plate 921, a mounting shaft 922, and a mounting plate 923. The triangular plate 921 is fixedly installed on the top of the placement frame 91. The triangular plate 921 is located at both ends of the mounting shaft 922. Both ends of the mounting shaft 922 extend out of the triangular plate 921 and are fixedly connected to the triangular plate 921. A reinforcing plate 924 is provided in the middle of the mounting shaft 922. The top of the reinforcing plate 924 is fixed to the mounting shaft 922, and the bottom surface of the reinforcing plate 924 is fixed to the top surface of the placement frame 91. The mounting plate 923 is fixed in the middle of the length direction of the mounting shaft 922. The mounting plate 923 is inclined and L-shaped. The display screen 9 is placed on the mounting plate 923.

[0087] A patch-type pressure sensor 93 is embedded on the inner surface of the receiving cavity 21 to detect the pressure applied by the patient to the pedal 2. A shoe insole 94 is placed inside the receiving cavity 21 to ensure patient comfort during pressure detection. The pressure sensor 93, the game mode touch button 85, and the display screen 9 are all electrically connected. Upon first pressing the game mode touch button 85, the display screen 9 is activated. The display screen 9 is a touchscreen and allows selection of game modes.

[0088] The game modes include racing games, water-powered car games, and other similar games. Pressure sensor 93 feeds back the detected pressure values ​​to the control system on display screen 9, displaying the pressure value, car speed or water-powered car speed, and historical data. For the racing game, a pressure-speed conversion can be designed; for example, if the patient applies 5N of force to pedal 2, the car speed is 5km / h. For the water-powered car game, a pressure-speed conversion can be designed; for example, if the patient applies 5N of force to pedal 2, the water-powered car speed is 5r / min. Medical staff can encourage patients to break historical records, motivating them to exercise and increasing their motivation. Pressing the game mode touch button 85 again turns off display screen 9 and disables the game mode.

[0089] The implementation principle of the ankle pump exercise device for preventing deep vein thrombosis in the lower extremities according to the embodiments of this application is as follows: For patients with mobility, the patient fixes their foot to the pedal 2 via the wearable component 22, selects the appropriate resistance via the automatic exercise level adjustment button, and then performs ankle pump exercises autonomously.

[0090] For patients with limited mobility, medical staff fix the patient's foot to the pedal 2 using the wearable component 22, then press the automatic exercise mode button 82. The horizontal linear module 62 inserts the docking rod 61 into the docking groove 41 of the rotating shaft 4. The rotary motor 632 controls the rotation of the rotating shaft 4, and the angle of the pedal 2 swing is selected according to the patient's needs using the automatic exercise level adjustment button. After the exercise is completed, the automatic exercise mode button 82 is pressed again, the rotary motor 632 is turned off, and the horizontal linear module 62 disengages the docking rod 61 from the docking groove 41.

[0091] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An ankle pump exercise device for preventing deep vein thrombosis in the lower extremities, characterized in that, include: Base plate (1); The pedal (2) is provided in two parts and the two pedals (2) are respectively positioned to correspond to the positions of the patient's two feet. The upper surface of the pedal (2) is provided with a receiving cavity (21) for the patient's feet to be accommodated. Above the receiving cavity (21) is a wearable component (22) for positioning the patient's feet. Mounting bracket (3) is used to mount the pedal (2). The mounting bracket (3) is raised and lowered on the base plate (1) by the lifting assembly (7). The mounting bracket (3) is U-shaped. The two side plates of the mounting bracket (3) are triangular. A rotating shaft (4) is provided at the top corner of the side plate of the mounting bracket (3). The two ends of the rotating shaft (4) are rotatably connected to the side plate of the mounting bracket (3) through bearings. The rotating shaft (4) passes through the end of the pedal (2) that is close to the patient in the length direction and is fixedly connected to the pedal (2). The pedal (2) is actively rotated by the active rotating mechanism (6). The active rotating mechanism (6) can also release the control of the pedal (2). Resistance mechanism (5) applies resistance to the pedal (2) and tilts the pedal (2), with the end of the pedal (2) furthest from the patient in the length direction being the higher end; A touch panel is disposed on the top surface of the base plate (1) on the side close to the patient.

2. The ankle pump exercise device for preventing deep vein thrombosis of the lower extremities according to claim 1, characterized in that: The resistance mechanism (5) includes multiple sets of resistance application components (51), which are spaced apart along the length of the pedal (2). Each set of resistance application components (51) includes a base (511), a compression spring (512), a top seat (513), a connecting bracket (514), a connecting block (515), a first iron plate (516), and a first magnetic plate (517). A first mounting groove is provided on the top surface of the base (511), and a second mounting groove is provided on the bottom surface of the top seat (513). The compression spring (512) has a first mounting groove on the top surface of the base (511). The bottom end is inserted into the first mounting groove and abuts against the inner bottom surface of the first mounting groove. The top end of the compression spring (512) is inserted into the second mounting groove and abuts against the inner top surface of the second mounting groove. A guide rod (5121) is provided inside the compression spring (512). The compression spring (512) is sleeved on the guide rod (5121). The guide rod (5121) is a telescopic rod. The bottom end of the guide rod (5121) is fixedly connected to the inner bottom surface of the first mounting groove. The top end of the guide rod (5121) is fixedly connected to the inner top surface of the second mounting groove. The top surface of the horizontal portion of the mounting bracket (3) is provided with a support block (518), and a support groove (5181) is provided on the top surface of the support block (518). The length direction of the support groove (5181) is consistent with the length direction of the mounting bracket (3). The base (511) is located in the support groove (5181) and slides along the length direction of the support groove (5181). The connecting bracket (514) is triangular in shape, and a connecting shaft is provided at the apex of the connecting bracket (514). The connecting shaft is fixedly connected to the connecting bracket (514). The rotation... The shaft (4) passes through the bottom end of the connecting block (515) and is rotatably connected to the connecting block (515). The first iron plate (516) is fixedly connected to the top surface of the connecting block (515). The bottom surface of the pedal (2) is provided with a mating groove (23). The first magnetic plate (517) is fixedly connected in the mating groove (23). The two ends of the first magnetic plate (517) in the length direction extend to the two ends near the two ends in the length direction of the pedal (2). One first magnetic plate (517) can simultaneously magnetize all the first iron plates (516) of the resistance application components (51). A positioning plate (31) is fixedly installed on the inner surface of the side plate on the outer side of the mounting bracket (3), and a positioning plate (42) is installed on the outer circumferential surface of the rotating shaft (4). The positioning plate (31) is located on the top of the mounting bracket (3), and the positioning plate (42) is located on the side of the positioning plate (31) away from the patient. When the positioning plate (42) is in contact with the positioning plate (31), the end of the pedal (2) away from the patient in the length direction reaches the highest position. The length of the compression springs (512) of the multiple sets of resistance application components (51) and the elastic force applied to the pedal (2) increase sequentially from the direction closer to the rotation axis (4) to the direction farther away from the rotation axis (4).

3. The ankle pump exercise device for preventing deep vein thrombosis of the lower extremities according to claim 2, characterized in that: The mounting bracket (3) is provided with a resistance adjustment component (52), which is used to detach part of the first iron piece (516) from the first magnetic plate (517) and keep it detached; the resistance application component (51) is provided in N groups, the resistance adjustment component (52) is provided in (N-1) groups, and the resistance adjustment component (52) is not provided at the group of resistance application components (51) furthest from the rotating shaft (4).

4. The ankle pump exercise device for preventing deep vein thrombosis of the lower extremities according to claim 3, characterized in that: A fixing frame (519) is fixed on each side of the support block (518) in the width direction. A second magnetic plate (5191) is fixedly connected to the top surface of each fixing frame (519). A side support plate (5141) is fixed at each end of the connecting bracket (514). The length direction of the side support plate (5141) is perpendicular to the length direction of the support block (518). A second iron plate (5142) is fixed on the bottom surface of each side support plate (5141). The two ends of the second magnetic plate (5191) in the length direction extend to the two ends close to the length direction of the support block (518). One second magnetic plate (5191) can simultaneously magnetically attract the second iron plates (5142) of all the resistance adjustment components (52). Each resistance adjustment assembly (52) includes an adjustment block (521), a limiting plate (522), a vertical plate (523), a horizontal electric actuator (526), ​​and a lifting electric actuator (527); Each set of resistance adjustment components (52) has two adjustment blocks (521), and the two adjustment blocks (521) are symmetrically arranged on both sides of the width direction of a mounting bracket (3). The side plate of the mounting bracket (3) is provided with a movable groove for the adjustment blocks (521) to rise and fall. Each adjustment block (521) corresponds to a limiting plate (522), a vertical plate (523), a horizontal electric push rod (526), ​​and a lifting electric push rod (527). The upright plate (523) is fixedly connected to the top surface of the corresponding adjusting block (521). The longitudinal width of the upright plate (523) is adapted to the longitudinal thickness of the side support plate (5141). The limiting plate (522) is slidably disposed on the top surface of the corresponding upright plate (523). The length direction of the limiting plate (522) is consistent with the length direction of the side support plate (5141). Each of the limiting plates (522) is provided with an auxiliary plate (524) below it. The top surface of the auxiliary plate (524) is fixedly connected to the bottom surface of the limiting plate (522). The bottom surfaces of the auxiliary plate (524) are provided with connecting plates (525) at both ends. The cylinder of the horizontal electric push rod (526) is fixedly connected to the sides of the adjusting block (521) in the width direction. The piston rod of the horizontal electric push rod (526) is fixedly connected to the corresponding connecting plate (525). When the piston rod of the horizontal electric actuator (526) extends, the limiting plate (522) moves away from the side support plate (5141), and the limiting plate (522) can slide to the point where the limiting plate (522) does not block the side support plate (5141). When the piston rod of the horizontal electric actuator (526) retracts, the limiting plate (522) moves toward the side support plate (5141), and the limiting plate (522) can slide to the point where the side support plate (5141) is exposed between the inserted adjusting block (521) and the limiting plate (522). The adjusting block (521) is raised and lowered by a lifting electric push rod (527). After the side support plate (5141) is locked between the adjusting block (521) and the limiting plate (522), the adjusting block (521) drives the side support plate (5141) to rise and fall. The adjusting block (521) can rise until the first iron piece (516) of the corresponding resistance application component (51) contacts the first magnetic plate (517). The adjusting block (521) can also fall until the second iron piece (5142) of the corresponding resistance adjustment component (52) contacts the second magnetic plate (5191). When the resistance adjustment assembly (52) is required to disengage the first iron piece (516) from the first magnetic plate (517) and keep it disengaged: the piston rod of the lifting electric push rod (527) extends, and the piston rod of the horizontal electric push rod (526) extends first to prevent the adjusting block (521) from rising to the side support plate (5141). Then the piston rod of the horizontal electric push rod (526) extends, so that the side support plate (5141) is inserted between the adjusting block (521) and the limiting plate (522). Then the piston rod of the lifting electric push rod (527) retracts, so that the adjusting block (521) descends to contact the second iron piece (5142) and the second magnetic plate (5191).

5. The ankle pump exercise device for preventing deep vein thrombosis of the lower extremities according to claim 1, characterized in that: The active rotation mechanism (6) is located at one end of the outer side of the rotating shaft (4). The active rotation mechanism (6) includes a docking rod (61), a horizontal linear module (62), and a rotating component (63). The length direction of the docking rod (61) is consistent with the axial direction of the rotating shaft (4). The outer end face of the rotating shaft (4) is provided with a docking groove (41) for the docking rod (61) to pass through. The docking rod (61) is a square rod, and the shape of the docking groove (41) is adapted to the shape of the docking rod (61). The horizontal linear module (62) is installed on the outer side of the mounting bracket (3), and the horizontal linear module (62) drives the docking rod (61) to move along the length direction of the rotating shaft (4); The rotating assembly (63) drives the horizontal linear module (62) and the docking rod (61) to rotate together along the central axis of the rotating shaft (4).

6. The ankle pump exercise device for preventing deep vein thrombosis of the lower extremities according to claim 5, characterized in that: The rotating assembly (63) includes a fixed plate (631), a rotary motor (632), a drive rod (633), a driving gear (634), a driven gear (635), and a synchronous toothed belt (636). The fixed plate (631) is horizontally arranged, and the rotary motor (632) is horizontally mounted on the fixed plate (631). The drive rod (633) includes an integrally formed circular segment (6331) and a square segment (6332). The circular segment (6331) is coaxially connected to the end of the square segment (6332) away from the rotating shaft (4). The outer diameter of the circular segment (6331) is smaller than that of the square segment (6332). The side length of the square segment (6332), the square segment (6332) of the drive rod (633) passes into the docking rod (61) and slides and connects with the docking rod (61), the docking rod (61) has a drive groove (611) at the end away from the rotating shaft (4) for the square segment (6332) of the drive rod (633) to slide, the docking rod (61) slides away from the rotating shaft (4) until the docking rod (61) passes into the docking groove (41) and remains stable, the square segment (6332) of the drive rod (633) is still located in the drive groove (611); The fixed plate (631) is provided with a support base (64) for supporting the circular segment (6331) of the drive rod (633). The support base (64) is rotatably connected to the circular segment (633) of the drive rod (633) through a bearing. The driving gear (634) is coaxially connected to the output shaft of the rotary motor (632). The driven gear (635) is coaxially connected to the circular segment (6331) of the drive rod (633). The driven gear (635) and the driving gear (634) are connected through the synchronous toothed belt (636). The fixed plate (631) is also provided with a tensioning wheel (637). The tensioning wheel (637) is located on both sides of the synchronous toothed belt (636) in the width direction to tension the synchronous toothed belt (636). An auxiliary block (65) is fixedly installed on the output end of the horizontal linear module (62). A retaining ring plate (612) is provided around the outer circumference of the connecting rod (61). The retaining ring plate (612) is rotatably connected to the auxiliary block (65) and slidably connected to it. The auxiliary block (65) is C-shaped. The outer circumference of the retaining ring plate (612) is circular. The inner side of the auxiliary block (65) is provided with a retaining groove (651) for the retaining ring plate (612) to be engaged. The upper side, lower side, and horizontal side of the retaining ring plate (612) are all engaged in the retaining groove (651). The output end of the horizontal linear module (62) drives the auxiliary block (65) to move along the length direction of the rotating shaft (4). The auxiliary block (65) drives the docking rod (61) to move along the length direction of the rotating shaft (4) through the snap ring plate (612). When the docking rod (61) moves, the square segment (6332) of the driving rod (633) moves in the driving groove (611).

7. The ankle pump exercise device for preventing deep vein thrombosis of the lower extremities according to claim 6, characterized in that: The slot (651) is provided with a limiting wheel (652). Multiple limiting wheels (652) are spaced apart along the outer peripheral surface of the snap ring plate (612). The outer peripheral surface of the limiting wheel (652) is in contact with the outer peripheral surface of the snap ring plate (612). The limiting wheels (652) are arranged on the upper and lower sides of the snap ring plate (612). The limiting wheel (652) is rotatably connected to the auxiliary block (65) through a pin. The pin is fixedly connected to the inner surface of both sides of the slot (651) in the thickness direction. The limiting wheel (652) is rotatably connected to the corresponding pin.

8. The ankle pump exercise device for preventing deep vein thrombosis of the lower extremities according to claim 1, characterized in that: The lifting assembly (7) is located between the two mounting brackets (3); The lifting assembly (7) includes a fixed frame (71), a lifting motor (72), a one-way screw (73), and a lifting block (74). The fixed frame (71) has a lifting groove (711) from top to bottom for the lifting block (74) to lift. The two opposite sides of the lifting block (74) are clearance-fitted with the inner side of the lifting groove (711). The lifting motor (72) is installed on the top of the fixed frame (71). The output shaft of the lifting motor (72) is vertically downward. The top end of the one-way screw (73) is coaxially connected to the output shaft of the lifting motor (72). The bottom end of the one-way screw (73) is rotatably connected to the bottom end of the lifting groove (711) through a bearing. The one-way screw (73) passes through the lifting block (74) and is threadedly connected to the lifting block (74). The lifting block (74) is fixedly connected to a limiting block (75) on the side near the mounting bracket (3). The lifting groove (711) and the two mounting brackets (3) are provided with limiting grooves (712) for the lifting of the limiting block (75). The limiting grooves (712) penetrate the top surface and side surface of the fixed frame (71). Each limiting block (75) is fixedly connected to a limiting shaft (751) on the side away from the lifting block (74). The outer diameter of the limiting shaft (751) is smaller than the outer diameter of the rotating shaft (4). The end of each limiting shaft (751) away from the corresponding limiting block (75) passes into the rotating shaft (4) and is rotatably connected to the rotating shaft (4) through a bearing.

9. The ankle pump exercise device for preventing deep vein thrombosis of the lower extremities according to claim 1, characterized in that: A support spring (76) is provided on the bottom surface of the horizontal part of the mounting bracket (3). The bottom end of the support spring (76) is fixed to the top surface of the base plate (1), and the top end of the support spring (76) is fixed to the bottom surface of the mounting bracket (3). Each mounting bracket (3) is provided with a limit rod (77) at each of its four corners. The top end of the limit rod (77) extends out of the horizontal part of the mounting bracket (3) and is slidably connected to the mounting bracket (3).

10. The ankle pump exercise device for preventing deep vein thrombosis of the lower extremities according to claim 1, characterized in that: The wearable component (22) includes an anti-slip band (221) and a buckle (222). One pedal (2) corresponds to two anti-slip bands (221), and the two anti-slip bands (221) are located at both ends near the length direction of the pedal (2). One anti-slip band (221) corresponds to one buckle (222). The two ends of the anti-slip band (221) are the starting end (2211) and the ending end (2212), respectively. The starting end (2211) of the anti-slip band (221) is fixedly connected to the outer side of the pedal (2) in the width direction. The buckle (222) is fixedly connected to the position near the inner side of the top surface of the pedal (2) in the width direction. The ending end (2212) of the anti-slip band (221) passes through the opening of the buckle (222) and wraps back to the starting end (2211) of the anti-slip band (221) and is attached to it by a Velcro assembly. The hook and loop fastener assembly includes a rough surface (22111) and a hook surface (22121), the rough surface (22111) and the hook surface (22121) are respectively disposed on the side of the starting end (2211) and the ending end (2212) that are close to each other, and the rough surface (22111) and the hook surface (22121) are attached together.

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