Auxiliary device for preventing deep vein thrombosis

Abstract

The utility model provides auxiliary equipment for preventing deep vein thrombosis. The auxiliary equipment comprises a leg fixing frame, a foot fixing frame and a driving device. The leg fixing frame is provided with a leg positioning face. The foot fixing frame is provided with a foot sole positioning face. The foot fixing frame is hinged to the leg fixing frame around a first rotating shaft. The first rotating shaft is located at a first preset distance in front of the leg positioning surface; and the first rotating shaft is arranged at a second preset distance on the upper side of the sole positioning surface in an up-and-down adjustable manner. The driving device is configured to drive the foot fixing frame to rotate around the first rotating shaft in a reciprocating mode. According to the auxiliary equipment, the legs and the feet of the user are prevented from sliding on the equipment, and the effects of improving the ankle pump movement effect, improving the use experience and widening the application range of the auxiliary equipment are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rehabilitation, treatment equipment technical field especially is related to a kind of auxiliary equipment for preventing deep vein thrombosis. BACKGROUND

[0002] Deep vein thrombosis (also known as lower extremity deep vein thrombosis) refers to the blood is not normal in deep vein coagulation, belongs to lower extremity venous reflux barrier disease.Deep vein thrombosis mostly occurs in patients in orthopedic immobilization state, after surgery, long-term bedridden, coma and other states.

[0003] To solve the above problems, ankle auxiliary movement equipment is proposed in related technology, which is provided with leg fixing frame and foot fixing frame, wherein the foot fixing frame can rotate around the leg fixing frame to force the patient to move the ankle joint to promote lower extremity blood circulation, thereby preventing deep vein thrombosis.However, the above-mentioned auxiliary movement device does not consider the ergonomic factors when setting the movement mechanism, and the design is not centered on the ankle joint movement, but is centered on the heel, which makes it difficult to fix the leg and foot, significantly reduces the ankle joint movement range, and reduces the contraction force of the gastrocnemius muscle group, so the effect of promoting lower extremity blood return is poor, and the user experience is poor. UTILITY MODEL CONTENT

[0004] In view of the above problems, the utility model is proposed to provide an auxiliary equipment for preventing deep vein thrombosis to overcome the above problems or at least partially solve the above problems, and the ankle joint is designed to be the center of passive dorsiflexion and plantar flexion movement, so the movement range is significantly increased, the contraction force of the gastrocnemius muscle group is increased, the lower extremity muscle pump function is fully played, the lower extremity blood return is effectively promoted, and the problems of existing ankle joint auxiliary movement equipment, such as difficult to fix the leg and foot, poor ankle joint movement effect, and poor user experience, are solved.

[0005] Specifically, the utility model provides the following technical scheme:

[0006] An auxiliary equipment for preventing deep vein thrombosis, comprising a leg fixing frame, a foot fixing frame and a driving device.

[0007] The leg fixing frame has a leg positioning surface.

[0008] The foot fixing frame has a foot bottom positioning surface.The foot fixing frame is hinged to the leg fixing frame around a first pivot axis.The first pivot axis is located at a first preset distance in front of the leg positioning surface; and the first pivot axis is adjustably arranged on the upper side of the foot bottom positioning surface at a second preset distance.

[0009] The driving device is configured to drive the foot fixing frame to rotate reciprocally around the first pivot axis.

[0010] Optionally, the foot fixing frame comprises a support frame and a foot supporting plate.

[0011] One end of the support frame is provided with the first rotating shaft. The foot positioning surface is formed on the upper surface of the foot supporting plate. The foot supporting plate is adjustably mounted on the support frame to adjust the distance between the foot supporting plate and the first rotating shaft and to adjust the second preset distance.

[0012] Optionally, the support frame comprises a hinge part, a lower folding part and a connecting part which are fixedly connected in sequence.

[0013] The first rotating shaft is arranged on the hinge part.

[0014] The connecting part is provided with a first sliding groove extending in a direction parallel to the foot positioning surface. A plurality of second sliding grooves perpendicular to the first sliding groove are arranged on the upper edge and / or the lower edge of the first sliding groove. The support frame is arranged in two parts spaced apart and opposite to each other along the direction of the first rotating shaft.

[0015] The foot supporting plate is arranged between the two support frames. The foot supporting plate is provided with connecting ears on both sides. The connecting ears are fixedly connected with the first sliding groove or the second sliding groove through the connecting hole and the fastener.

[0016] Optionally, the foot fixing frame further comprises a first binding hole arranged on the connecting ear to fix the user's foot on the foot supporting plate by a first binding belt.

[0017] Optionally, the foot fixing frame further comprises a connecting plate in the shape of an open U. The two ends of the U-shaped connecting plate are fixedly connected with one of the connecting parts.

[0018] Optionally, the foot fixing frame further comprises a first flexible pad fixedly arranged on the foot positioning surface.

[0019] Optionally, the leg fixing frame comprises a shell and a leg supporting plate.

[0020] The front side of the shell is open. The hinge ears protruding forward are arranged on the side walls of the shell. The first rotating shaft is rotatably connected with the hinge ears.

[0021] The leg supporting plate is detachably arranged at the front opening of the shell. The leg positioning surface is formed on the front surface of the leg supporting plate.

[0022] Optionally, the leg fixing frame further comprises a plurality of second binding holes arranged on the side walls of the shell to fix the user's leg on the leg supporting plate by a plurality of second binding belts.

[0023] Optionally, the leg fixing frame further comprises a second flexible pad fixedly arranged on the leg positioning surface.

[0024] Optionally, the driving device comprises a push rod device, a rotating rod and a second rotating shaft.

[0025] The push rod device is an electric push rod or an electro-hydraulic push rod.

[0026] One end of the rotating rod is hingedly connected to the push rod of the push rod device through the second rotating shaft, and the other end of the rotating rod is fixedly connected to the first rotating shaft.

[0027] Optionally, the second rotating shaft is located at the back side of the leg positioning surface.

[0028] Optionally, the driving device comprises a driving motor, a push rod driven by the driving motor and a piston rod.

[0029] Optionally, the first preset distance is 15-45mm.

[0030] Optionally, the second preset distance is 10-40mm.

[0031] Optionally, the first rotating shaft is adjustably arranged at the front side of the leg positioning surface at a first preset distance.

[0032] The auxiliary equipment for preventing deep vein thrombosis of the utility model, leg fixing frame can fix the user's calf on the leg positioning surface, foot fixing frame can fix the user's foot bottom on the foot bottom positioning surface, through the driving device drive foot fixing frame reciprocating rotation around the first rotating shaft, can drive the user's ankle joint to do passive movement, drive calf muscle contraction and extrusion, promote the venous blood flow of lower limbs, prevent the formation of deep vein thrombosis of lower limbs. By setting the first rotating shaft at the front side of the leg positioning surface at a first preset distance and the upper side of the foot bottom positioning surface at a second preset distance, the first rotating shaft can be close to the ankle joint axis of dorsiflexion / planter flexion movement, so that when the foot fixing frame reciprocating rotation around the first rotating shaft, the user's leg is not easy to slide on the leg fixing frame, the foot is not easy to slide on the foot fixing frame, and the effect of improving the ankle pump movement and improving the use experience is achieved. On the other hand, by setting the first rotating shaft adjustably at the upper side of the foot bottom positioning surface at a second preset distance, the second preset distance can be adjusted according to the size of different ankle joints, and the effect of improving the application range of the auxiliary equipment is achieved.

[0033] The above, as well as additional objects, advantages, and features of the present application, will be more fully understood and appreciated by reference to the detailed description of the present application hereinbelow and to the accompanying drawings, wherein: BRIEF DESCRIPTION OF DRAWINGS

[0034] Some embodiments of the present application will now be described, by way of example only, with reference to the attached schematic drawings. Identical or similar components or parts are referred to using the same reference numerals throughout the description. It should be understood that these drawings are not necessarily to scale. In the drawings:

[0035] Figure 1 is a schematic structural view of an auxiliary device according to an embodiment of the present application;

[0036] Figure 2 is a schematic front view of an auxiliary device according to an embodiment of the present application;

[0037] Figure 3 is Figure 2 a schematic cross-sectional view along the M-M axis;

[0038] Figure 4 is a schematic exploded view of a foot fixing frame of an auxiliary device according to an embodiment of the present application;

[0039] Figure 5 is a schematic exploded view of a leg fixing frame of an auxiliary device according to an embodiment of the present application;

[0040] Figure 6 is a schematic structural view of a driving device of an auxiliary device according to an embodiment of the present application;

[0041] Figure 7 is a schematic structural view of a human foot.

[0042] LIST OF REFERENCE NUMERALS:

[0043] 100, foot fixing frame; 110, foot bottom positioning surface; 120, support frame; 121, hinged portion; 122, lower folding portion; 123, connecting portion; 124, first sliding groove; 125, second sliding groove; 130, foot bottom support plate; 131, connecting lug; 132, connecting hole; 133, first binding hole; 140, connecting plate; 150, first flexible pad; 200, leg fixing frame; 210, leg positioning surface; 220, housing; 221, hinged lug; 222, second binding hole; 230, leg support plate; 240, second flexible pad; 300, driving device; 310, push rod device; 311, driving seat; 312, push rod; 313, driving motor; 320, rotating rod; 330, second rotating shaft; 400, first rotating shaft. DETAILED DESCRIPTION

[0044] The auxiliary device of the embodiments of the present application will be described below with reference to Figures 1 to 7 In the description of the embodiments, it is to be understood that the terms "first", "second", "third" and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of use in either order. It is also to be understood that the terminology "at least one" is used herein to describe any one of a plurality of items, related groups of items, related combinations of items, related combinations of items, and / or related combinations of related groups of items. By way of example, "at least one" can be used to describe one or more items (e.g., analogous to "one or more"). By way of further example, "at least one" can be used to describe one, two, three, four, or more items (e.g., analogous to "one or more"). In addition, it is to be understood that features described with respect to various embodiments can be combined in any manner, unless as would be readily apparent to those skilled in the art, such features are incompatible. It is to be further understood that the use of relational terms, if any, such as first, second, third, and the like, are used solely to distinguish one from another entity or action without necessarily giving rise to order of importance or chronology.

[0045] Unless specifically stated otherwise, and as can be apparent from the disclosure, use of terms such as "processing", "computing", "calculating", "determining", "displaying", or the like, can refer to actions or processes of a machine that manipulates or transforms data represented as physical electronic or magnetic quantities within memories, registers, or other information storage devices. A result of such actions or processes can be directly or indirectly observable in that the transformed data represents a result of the actions or processes. Such actions or processes need not be implemented by a machine as long as the desired result is achieved.

[0046] In addition, in the description of the embodiments, a first feature "on" or "under" a second feature can include the first and second features being directly in contact, or the first and second features not being directly in contact but being in contact through another feature between them. That is, in the description of the embodiments, the first feature "on", "above", and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or only indicating that the first feature is higher than the second feature in horizontal height. The first feature "under", "below", or "underneath" the second feature can be the first feature being directly below or obliquely below the second feature, or only indicating that the first feature is lower than the second feature in horizontal height.

[0047] In the description of the embodiments, the description with reference to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the description of the present application, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] The calf muscle group is called the second heart of the human body because they play a key role in the process of blood circulation in the human body. These muscles pump the venous blood back to the heart by contracting and squeezing, thus assisting the heart to complete the blood recovery process. The calf muscle group has a similar pumping function to the heart, but in the opposite direction, i.e. from the lower to the upper.

[0049] We designed an auxiliary device to prevent deep vein thrombosis in the lower limbs according to the pumping function of the calf muscle group. The principle is that the ankle dorsiflexion and plantar flexion movement can drive the contraction of the calf muscle group and promote the pumping function of the venous blood backflow into the heart. We designed an auxiliary device to promote passive dorsiflexion and plantar flexion movement of the ankle joint, promote venous blood backflow in the lower limbs, prevent deep vein thrombosis in the lower limbs, and prevent atrophy of the calf muscle group.

[0050] We designed a machine to prevent deep vein thrombosis in the lower limbs, which can effectively prevent deep vein thrombosis in the lower limbs of patients who have been in bed for a long time after trauma, surgery or long-term coma, reduce pulmonary embolism and effectively prevent sudden death due to pulmonary embolism. In addition, the auxiliary device also plays an auxiliary role in the rehabilitation of the ankle joint of the patient.

[0051] Figure 7 is a schematic structural diagram of a human foot, in which the Y-axis is the joint axis of the ankle joint of the foot for dorsiflexion / plantar flexion movement. When the foot is moving dorsiflexion / plantar flexion, it rotates up and down around the Y-axis as the pivot axis. The Y-axis is usually located on the front side of the vertical plane where the heel and the back of the lower leg are located, and on the upper side of the horizontal plane where the foot is located. In the prior art, the pivot axis of the ankle joint auxiliary movement device deviates greatly from the Y-axis. During the movement of the mechanism, the lower leg and the foot of the user will move or slide relative to the auxiliary movement device, or even be separated from the auxiliary movement device. This results in a substandard dorsiflexion / plantar flexion movement posture, which leads to poor ankle joint movement effect and poor user experience.

[0052] Figure 1 is a schematic structural diagram of an auxiliary device according to an embodiment of the present application, as shown in Figure 1 and with reference to Figures 2-7 The embodiment of the present application provides an auxiliary device for preventing deep vein thrombosis, which comprises a leg fixing frame 200, a foot fixing frame 100 and a driving device 300.

[0053] The leg fixing frame 200 has a leg positioning surface 210. The foot fixing frame 100 has a foot bottom positioning surface 110. The foot fixing frame 100 is hinged to the leg fixing frame 200 around a first rotation shaft 400. The first rotation shaft 400 is located at a first preset distance L1 in front of the leg positioning surface 210. The first rotation shaft 400 is adjustably arranged at a second preset distance L2 above the foot bottom positioning surface 110. The driving device 300 is configured to drive the foot fixing frame 100 to reciprocally rotate around the first rotation shaft 400.

[0054] The leg fixing frame 200 is used to fix the user's lower leg, and the back side of the user's lower leg is fixed to the front side of the leg positioning surface 210. The leg fixing frame 200 can be bound together with the user's lower leg and the leg positioning surface 210 by a strap, a magic tape, or the like.

[0055] The foot fixing frame 100 is used to fix the user's foot, and the user's foot bottom is fixed to the upper side of the foot bottom positioning surface 110. The foot fixing frame 100 can be bound together with the user's foot and the leg positioning surface 210 by a strap, a magic tape, or the like.

[0056] The first rotation shaft 400 can be fixedly connected to the foot fixing frame 100 and rotatably connected to the leg fixing frame 200, or fixedly connected to the leg fixing frame 200 and rotatably connected to the foot fixing frame 100.

[0057] The driving device 300 drives the foot fixing frame 100 to reciprocally rotate around the first rotation shaft 400 by using the reciprocating rotation of a motor, the reciprocating movement of an electric push rod, the reciprocating contraction of a piston pump, electromagnetic principle, or the like. The driving device 300 can be a motor assembly, the motor output shaft of which is drivingly connected to the first rotation shaft 400, and the foot fixing frame 100 is swung relative to the leg fixing frame 200 by the motor alternating forward and reverse rotation. The driving device 300 can also be an electric push rod, an electro-hydraulic push rod, a piston pump, or the like, and the foot fixing frame 100 is swung relative to the leg fixing frame 200 by the reciprocating movement of the push rod.

[0058] In the embodiment, the leg positioning surface 210 is used to define a vertical plane in which the heel and the back side of the lower leg are located, and the foot bottom positioning surface 110 is used to define a horizontal plane in which the foot bottom is located. By adjustably arranging the first rotation shaft 400 at the second preset distance L2 above the foot bottom positioning surface 110, the second preset distance L2 can be adjusted according to the size of different ankle joints, so that the first rotation shaft 400 is as close as possible to the distance between the joint axis of the ankle joint and the horizontal plane in which the foot bottom is located, that is, the first rotation shaft 400 is as close as possible to the joint axis or coincides with the joint axis. In this way, when the foot fixing frame 100 reciprocally rotates around the first rotation shaft 400, the user's foot is not easy to slide on the foot fixing frame 100, and the effects of improving the ankle pump ankle joint movement and improving the use experience are achieved.

[0059] In actual use, first, the user's lower leg is fixed on the leg fixing frame 200, the back side of the lower leg is tightly attached to the front side of the leg positioning surface 210, and the user's foot is fixed on the foot fixing frame 100, the sole is tightly attached to the upper side of the foot positioning surface 110. Then, the driving device 300 is controlled to work, and the foot fixing frame 100 is driven to reciprocating rotate around the first rotating shaft 400. When the foot fixing frame 100 / foot positioning surface 110 moves towards the leg fixing frame 200 / leg positioning surface 210, the included angle between the foot positioning surface 110 and the leg positioning surface 210 gradually decreases, and the user's ankle joint performs the dorsiflexion movement. When the foot fixing frame 100 / foot positioning surface 110 moves away from the leg fixing frame 200 / leg positioning surface 210, the included angle between the foot positioning surface 110 and the leg positioning surface 210 gradually increases, and the user's ankle joint performs the plantar flexion movement. The dorsiflexion / plantar flexion movement of the ankle joint can drive the lower leg muscle group to alternately relax and contract, and the lower leg muscle group is squeezed when contracting, so that the venous blood in the lower limbs is pumped back to the heart, thereby assisting the heart to complete the blood recovery process.

[0060] It needs to be understood that the embodiment does not limit the position and orientation of the auxiliary device in actual use, and the user can use in a sitting position or a lying position. When used in a sitting position, the first rotating shaft 400 is located at the front side of the leg positioning surface 210 and at the upper side of the foot positioning surface 110. When used in a lying position, the first rotating shaft 400 is located at the upper side of the leg positioning surface 210 and at the front side of the foot positioning surface 110.

[0061] In some embodiments of the auxiliary device of the utility model, as shown in Figure 3 The first preset distance L1 is 15-45mm, and / or the second preset distance L2 is 10-40mm.

[0062] For the general population, the Y axis is usually located at the front side of the vertical plane where the heel and the back of the lower leg are located, and at the upper side of the horizontal plane where the sole is located. In the embodiment, the leg positioning surface 210 is used to define the vertical plane where the heel and the back of the lower leg are located, and the foot positioning surface 110 is used to define the horizontal plane where the sole is located. By setting the first preset distance and the second preset distance, the first rotating shaft 400 is as close as possible to the joint axis of the ankle joint dorsiflexion / plantar flexion movement of the foot, or coincides with the joint axis, so that when the foot fixing frame 100 reciprocating rotates around the first rotating shaft 400, the user's leg is not easy to slide on the leg fixing frame 200, and the foot is not easy to slide on the foot fixing frame 100, thereby improving the ankle joint movement effect and improving the use experience.

[0063] In some embodiments of the auxiliary device of the utility model, as shown in Figure 3As shown, the first preset distance L1 is 30-40mm, and the second preset distance L2 is 25-35mm. The sizes conform to the positions of the joints Y of most adult population, and the first preset distance and the second preset distance of the auxiliary device can be adjusted when the auxiliary device is used.

[0064] In some embodiments of the auxiliary device of the utility model, as shown in Figures 3-4 As shown, the foot fixing frame 100 comprises a support frame 120 and a foot bottom support plate 130.

[0065] One end of the support frame 120 is provided with a first rotating shaft 400. The foot bottom positioning surface 110 is formed on the upper surface of the foot bottom support plate 130. The foot bottom support plate 130 is adjustably mounted on the support frame 120 to adjust the distance L3 between the foot bottom support plate 130 and the first rotating shaft 400 and adjust the second preset distance L2.

[0066] The support frame 120 is used for fixing the foot bottom support plate 130 and driving the foot bottom support plate 130 to reciprocating rotate around the first rotating shaft 400. The foot bottom support plate 130 is used for supporting the foot.

[0067] In this embodiment, the foot bottom support plate 130 is adjustably mounted on the support frame 120 along the direction parallel to the foot bottom positioning surface 110, so as to adjust the distance L3 between the foot bottom support plate 130 and the first rotating shaft 400. Through the distance L3 between the foot bottom support plate 130 and the first rotating shaft 400, the foot bottom support plate 130 can adapt to different feet. Specifically, when the user's foot is large, the foot bottom support plate 130 can be moved forward; when the user's foot is small, the foot bottom support plate 130 can be moved backward.

[0068] In this embodiment, the foot bottom support plate 130 is adjustably mounted on the support frame 120 along the direction perpendicular to the foot bottom positioning surface 110, so as to adjust the second preset distance to adapt to different feet. Specifically, when the Y axis of the ankle joint of the user's foot is far away from the foot bottom horizontal plane, the foot bottom support plate 130 can be moved downward; when the Y axis of the ankle joint of the user's foot is close to the foot bottom horizontal plane, the foot bottom support plate 130 can be moved upward. Through the adjustment of the second preset distance, the first rotating shaft 400 can be as close as possible to the Y axis of the ankle joint of the foot, so as to achieve the effects of improving the ankle joint movement and improving the use experience.

[0069] In some embodiments of the auxiliary device of the utility model, as shown in Figures 3-4 As shown, the support frame 120 comprises a hinge part 121, a lower folding part 122 and a connecting part 123 which are fixedly connected in sequence.

[0070] The first rotating shaft 400 is arranged on the hinged part 121. The connecting part 123 is provided with a first sliding groove 124 extending in a direction parallel to the foot positioning surface 110, and a plurality of second sliding grooves 125 perpendicular to the first sliding groove 124 are arranged on the upper edge and / or the lower edge of the first sliding groove 124. The support frame 120 is arranged in two opposite directions along the first rotating shaft 400. The foot supporting plate 130 is arranged between the two support frames 120, and the foot supporting plate 130 is provided with connecting ears 131 on both sides, which are fixedly connected with the first sliding groove 124 or the second sliding groove 125 through connecting holes 132 and fasteners (not shown in the figure).

[0071] The lower folding part 122 is used for spacing the hinged part 121 and the connecting part 123, so that the first rotating shaft 400 is located at a preset distance above the foot positioning surface 110.

[0072] The extending direction of the first sliding groove 124 is parallel to the foot positioning surface 110, and is used for adjusting the distance L3 between the foot supporting plate 130 and the first rotating shaft 400. When adjustment is needed, the fastener connecting the connecting hole 132 and the first sliding groove 124 is loosened, then the foot supporting plate 130 is moved forward or backward to the desired position, and then the fastener is tightened again. The adjustment mode is simple to operate, and the connection reliability is high.

[0073] The extending direction of the second sliding groove 125 is perpendicular to the foot positioning surface 110, and is used for adjusting the second preset distance L2. The second sliding groove 125 can be multiple and is arranged in a spaced and alternating manner on the upper edge and / or the lower edge of the first sliding groove 124. When the connecting ear 131 is connected with the second sliding groove 125 on the upper edge of the first sliding groove 124 through the connecting hole 132 and the fastener, the second preset distance L2 can be reduced, and vice versa.

[0074] The connecting hole 132 can be multiple and is arranged in a spaced manner in a direction parallel to the foot positioning surface 110, so as to be connected with the first sliding groove 124 and / or the second sliding groove 125 through multiple fasteners, thereby improving the firmness of the connection.

[0075] In some embodiments of the auxiliary device of the utility model, as shown in Figures 3-4 The foot fixing frame 100 further comprises a first binding hole 133 arranged on the connecting ear 131, so as to fix the user's foot on the foot supporting plate 130 through a first binding (not shown in the figure).

[0076] In this embodiment, the first binding passes through the two first binding holes 133, so as to quickly and firmly fix the user's foot on the upper side of the foot fixing frame 100, and make the foot tightly adhere to the foot positioning surface 110.

[0077] In some embodiments of the auxiliary device of the utility model, as shown inFigures 3-4 As shown in the drawings, the foot fixing frame 100 further comprises a connecting plate 140, which is in the shape of an open U, and two ends of the U-shaped connecting plate 140 are fixedly connected with one connecting part 123 respectively.

[0078] In this embodiment, the connecting plate 140 is used to fixedly connect the two connecting parts 123, so as to enhance the structural strength of the support frame 120 and prevent the support frame 120 from deforming during work.

[0079] In some embodiments of the auxiliary device of the utility model, as shown in Figures 3-4 As shown in the drawings, the foot fixing frame 100 further comprises a first flexible pad 150, which is fixedly arranged on the foot bottom positioning surface 110.

[0080] The first flexible pad 150 can be made of nylon, sponge, air cushion or the like, and can be attached to the foot bottom of the user, so as to form a filling between the arch and the foot bottom positioning surface 110 and improve the comfort of the user. The first flexible pad 150 can also increase the friction between the foot bottom and the foot bottom positioning surface 110, so as to prevent the foot bottom from sliding on the foot bottom positioning surface 110 during ankle movement.

[0081] In some embodiments of the auxiliary device of the utility model, as shown in Figure 3 and Figure 5 As shown in the drawings, the leg fixing frame 200 comprises a shell 220 and a leg support plate 230.

[0082] The shell 220 is open at the front side. The two side walls of the shell 220 are provided with forwardly protruding hinged ears 221, and the first rotating shaft 400 is rotatably connected to the hinged ears 221.

[0083] The leg support plate 230 is detachably arranged at the front opening of the shell 220, and the leg positioning surface 210 is formed on the front surface of the leg support plate 230.

[0084] The shell 220 can be a sheet metal part, a welded part or a plastic product. The inner side of the shell 220 forms a containing cavity, which is used to install the driving device 300, a controller, a power supply and the like.

[0085] The hinged ears 221 are forwardly protruded, so as to make the first rotating shaft 400 spaced apart from the leg positioning surface 210 by a first preset distance L1.

[0086] In some embodiments of the auxiliary device of the utility model, as shown in Figure 3 and Figure 5 As shown in the drawings, the leg fixing frame 200 further comprises a plurality of second binding strap holes 222, which are arranged on the side walls of the shell 220, so as to fix the legs of the user on the leg support plate 230 through a plurality of second binding straps (not shown in the drawings).

[0087] A plurality of second binding holes 222 can be arranged on the side wall of the shell 220 in an up-down interval. In use, a plurality of second binding belts pass through the corresponding plurality of second binding holes 222, so that the user's calf can be quickly and firmly fixed on the upper side of the leg fixing frame 200, and the back side of the calf is tightly attached to the leg positioning surface 210.

[0088] In some embodiments of the auxiliary equipment of the utility model, as shown in Figure 3 and Figure 5 The leg fixing frame 200 further comprises a second flexible pad 240 fixedly arranged on the leg positioning surface 210.

[0089] The second flexible pad 240 can be made of nylon, sponge, air cushion or the like, and can be attached to the back side of the user's calf to form a filling between the back side of the calf and the leg positioning surface 210, thereby improving the comfort of the user. The second flexible pad 240 can also increase the friction between the back side of the calf and the leg positioning surface 210 to prevent the back side of the calf from sliding on the leg positioning surface 210 when the ankle joint moves.

[0090] In some embodiments of the auxiliary equipment of the utility model, as shown in Figure 6 The driving device 300 comprises a push rod device 310, a rotating rod 320 and a second rotating shaft 330.

[0091] The push rod device 310 is an electric push rod or an electro-hydraulic push rod. The driving seat 311 of the push rod device 310 is hinged to the bottom of the shell 220.

[0092] One end of the rotating rod 320 is hinged to the push rod 312 of the push rod device 310 through the second rotating shaft 330, and the other end of the rotating rod 320 is fixedly connected to the first rotating shaft 400.

[0093] The second rotating shaft 330 can be fixedly connected to the end of the push rod 312 and rotatably connected to one end of the rotating rod 320, or can be fixedly connected to one end of the rotating rod 320 and rotatably connected to the end of the push rod 312.

[0094] The push rod device 310 is usually provided with a driving motor 313, a push rod 312, a driving seat 311 and the like. The driving motor 313 is used to drive the push rod 312 to linearly reciprocate. The reciprocating movement of the push rod 312 drives the rotating rod 320 to reciprocate relative to the first rotating shaft 400 through the second rotating shaft 330, thereby driving the foot fixing frame 100 to reciprocate around the first rotating shaft 400.

[0095] The electric push rod is accurate in positioning, fast in speed, long in service life, and suitable for medical and rehabilitation equipment.

[0096] In some embodiments of the auxiliary equipment of the utility model, as shown in Figure 3 The second rotating shaft 330 is located at the back side of the leg positioning surface 210.

[0097] Specifically, the second rotating shaft 330 can be located at the rear side of the leg support plate 230 and inside the shell 220. When the device is working, the second rotating shaft 330 has a large movement range. By arranging the second rotating shaft 330 at the leg support plate 230, the second rotating shaft 330 can be prevented from touching or pressing the user's foot when moving.

[0098] In some embodiments of the auxiliary device of the utility model, the first rotating shaft 400 can be arranged at the front side of the leg positioning surface 210 at a first preset distance L1 in a front and rear adjustable manner.

[0099] Exemplarily, the hinged ear 221 can be provided with a long hole extending in the front and rear directions, and the first rotating shaft 400 can be installed in the long hole in a front and rear adjustable manner. In this way, the first preset distance L1 can be adjusted according to the size of the ankle joint, so that the first rotating shaft 400 is as close as possible to the joint axis of the ankle joint of the foot relative to the vertical plane where the heel and the back of the lower leg are located, that is, the first rotating shaft 400 is as close as possible to the joint axis or coincides with the joint axis as much as possible. In this way, when the foot fixing frame 100 rotates back and forth around the first rotating shaft 400, the user's leg is not easy to slide on the leg fixing frame 200, achieving the effects of improving the ankle pump ankle joint movement effect and improving the use experience.

[0100] In some embodiments of the auxiliary device of the utility model, the auxiliary device further comprises a sensor and a controller, and a single-chip microcomputer, such as an ATMEGA328 single-chip microcomputer, is arranged in the controller. The single-chip microcomputer has a self-learning module, which can automatically record and save the maximum plantar flexion and dorsiflexion angles that the user can withstand when the user uses the auxiliary device for the first time, so as to automatically call them in the next use. On the one hand, it enables the user to perform accurate rehabilitation training when passively performing dorsiflexion and plantar flexion of the ankle joint, thereby improving the effect of squeezing the lower limb veins. On the other hand, it is convenient for medical professionals to set appropriate movement modes, resistances and movement ranges according to the specific conditions of the user to achieve the best rehabilitation effect.

[0101] At this point, those skilled in the art should recognize that although the utility model has been shown and described in detail herein, many other variants or modifications conforming to the principles of the utility model can be directly determined or deduced according to the disclosure of the utility model without departing from the spirit and scope of the utility model. Therefore, the scope of the utility model should be understood and recognized as covering all these other variants or modifications.

Claims

1. An assistive device for preventing deep vein thrombosis, characterized in that, The auxiliary device comprises: a leg fixing frame with a leg positioning surface; a foot fixing frame with a foot bottom positioning surface; the foot fixing frame is hinged to the leg fixing frame around a first rotation shaft; the first rotation shaft is located at a first preset distance in front of the leg positioning surface; and the first rotation shaft is adjustably arranged at a second preset distance above the foot bottom positioning surface; a driving device configured to drive the foot fixing frame to rotate around the first rotation shaft reciprocally; wherein the first preset distance is 15-45mm; and / or the second preset distance is 10-40mm.

2. The supplementary device according to claim 1, characterized in that The foot fixing frame comprises: a support frame, one end of the support frame being provided with the first rotation shaft; a foot bottom support plate, the foot bottom positioning surface being formed on the upper surface of the foot bottom support plate; the foot bottom support plate is adjustably mounted on the support frame to adjust the distance between the foot bottom support plate and the first rotation shaft and to adjust the second preset distance.

3. The auxiliary device according to claim 2, wherein: the support frame comprises a hinge portion, a lower folding portion and a connecting portion which are fixedly connected in sequence; the first rotation shaft is arranged on the hinge portion; a first sliding groove extending in a direction parallel to the foot bottom positioning surface is arranged on the connecting portion; a plurality of second sliding grooves perpendicular to the first sliding groove are arranged on the upper edge and / or lower edge of the first sliding groove; the support frame comprises two support frames which are spaced apart and oppositely arranged along the direction of the first rotation shaft; the foot bottom support plate is located between the two support frames; connecting ears are arranged on both sides of the foot bottom support plate; the connecting ears are fixedly connected with the first sliding groove or the second sliding groove through connecting holes and fasteners.

4. The supplementary device according to claim 3, characterized in that The foot fixing frame further comprises: a first binding hole arranged on the connecting ear to fix the user's foot on the foot bottom support plate by a first binding belt; and / or a connecting plate, the connecting plate being in the shape of a U with the opening facing upward, two ends of the U-shaped connecting plate being fixedly connected with one of the connecting portions respectively; and / or a first flexible pad fixedly arranged on the foot bottom positioning surface.

5. The supplemental device of claim 1, wherein, The leg fixing frame comprises: a shell, the front side of the shell being open; hinge ears protruding forward are arranged on the side walls of the shell; the first rotation shaft is rotatably connected with the hinge ears; a leg support plate, the leg support plate being detachably arranged at the front side opening of the shell; the leg positioning surface is formed on the front surface of the leg support plate.

6. The supplementary device according to claim 5, characterized in that The leg fixing frame further comprises: a plurality of second binding holes arranged on the side walls of the shell to fix the user's leg on the leg support plate by a plurality of second binding belts; and / or a second flexible pad fixedly arranged on the leg positioning surface.

7. The supplemental device of claim 5, wherein, The driving device comprises: a push rod device, the push rod device being an electric push rod or an electro-hydraulic push rod; a driving seat of the push rod device is hingedly connected with the bottom of the shell; a rotating rod and a second rotation shaft, one end of the rotating rod being hingedly connected with the push rod of the push rod device through the second rotation shaft, the other end of the rotating rod being fixedly connected with the first rotation shaft.

8. The supplementary device according to claim 7, characterized in that The second rotation shaft is located at the rear side of the leg positioning surface.

9. The supplemental device of claim 1, wherein, The first rotation shaft is adjustably arranged at the first preset distance in front of the leg positioning surface.

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