An auxiliary activity device for preventing venous thrombosis

Abstract

The utility model discloses an auxiliary activity device for preventing venous thrombosis belongs to lower limb venous thrombosis rehabilitation technical field, and one end of support plate is rotatoryly installed on the bottom plate, and the installation box is installed on the bottom plate, and the air pump and electromagnetic reversing valve are installed in the installation box, and the air pump is connected with electromagnetic reversing valve through the trachea, and the fixed end of air cylinder is rotatoryly connected with the bottom plate, and the movable end of air cylinder is rotatoryly connected with one side of support plate, and the air cylinder both ends are provided with the trachea interface, and the air cylinder both ends are connected with electromagnetic reversing valve through the trachea, and the bandage unit is installed in the side of support plate away from air cylinder, is used for fixing the patient foot on the support plate, and the control panel is installed on the side wall of installation box, and the air pump and electromagnetic reversing valve all are connected with control panel electricity. The problem that the existing femur fracture patient is prone to venous blood stasis and deep venous thrombosis due to long-term bed rest and reduced activity has been solved.

Description

Technical Field

[0001] This utility model belongs to the field of lower extremity venous thrombosis rehabilitation technology, and specifically relates to an auxiliary activity device for preventing venous thrombosis. Background Technology

[0002] Femoral fractures often lead to prolonged bed rest, reduced activity, and venous stasis, increasing the risk of deep vein thrombosis (DVT). A dislodged DVT can cause pulmonary embolism. Current solutions typically include pharmacological and physical prophylaxis. Pharmacologically, anticoagulants such as low molecular weight heparin, warfarin, and novel oral anticoagulants can be used. However, the patient's bleeding risk must be considered, especially for postoperative patients. Dosage adjustments or choosing the appropriate time to start medication may be necessary, requiring a high level of experience from healthcare professionals and carrying certain risks. Physical prophylaxis involves elastic stockings and intermittent pneumatic compression devices to promote venous return. However, this method often requires nursing staff to put on and remove the devices on the patient's lower limbs. While it plays a positive role in preventing lower limb DVT, it is time-consuming and labor-intensive, increasing the workload for nursing staff. Furthermore, the lack of rapid lower limb movement hinders deep vein blood circulation, affecting the overall effectiveness of prevention and treatment.

[0003] Therefore, an assistive device for preventing venous thrombosis is provided. Utility Model Content

[0004] The purpose of this invention is to provide an auxiliary movement device for preventing venous thrombosis. Through the cooperation of a cylinder and a support plate, it enables active or passive movement of the foot and ankle in bedridden patients with femoral fractures. This solves the problem that existing femoral fracture patients, due to prolonged bed rest and reduced activity, are prone to venous blood stasis and deep vein thrombosis. The specific technical solution is as follows:

[0005] An assistive device for preventing venous thrombosis includes a mounting box, a cylinder, an air pump, a control panel, a support plate, an air tube, a solenoid valve, a strap unit, and a base plate. One end of the support plate is rotatably mounted on the base plate. The mounting box is mounted on the base plate. The air pump and the solenoid valve are mounted inside the mounting box. The air pump and the solenoid valve are connected via an air tube. The fixed end of the cylinder is rotatably connected to the base plate, and the movable end of the cylinder is rotatably connected to one side of the support plate. Air tube interfaces are provided at both ends of the cylinder, and both ends of the cylinder are connected to the solenoid valve via air tubes. The strap unit is mounted on the side of the support plate away from the cylinder and is used to fix the patient's foot to the support plate. The control panel is mounted on the side wall of the mounting box, and both the air pump and the solenoid valve are electrically connected to the control panel.

[0006] Preferably, the bottom plate has an arc-shaped groove at the end away from the mounting box, the arc-shaped groove is covered with an elastic material, and the line connecting the strap unit and the arc-shaped groove is parallel to the support plate.

[0007] Preferably, it also includes a throttle valve, wherein a throttle valve is installed at the exhaust port of the electromagnetic reversing valve, and the throttle valve is electrically connected to the control panel.

[0008] Preferably, the support plate has multiple sliding grooves, in which sliders are slidably installed. A slide plate is installed at one end of each slider, and a limit plate is installed at the other end of the slider. The strap unit is installed on the slide plate.

[0009] Preferably, the strap unit includes a strap body, a pivot, and a Velcro strap. One end of the strap body is mounted on one side of the skateboard, the pivot is mounted on the other side of the skateboard, the Velcro strap is mounted on the strap body, and the other end of the strap body passes through the pivot and is secured by the Velcro strap.

[0010] Preferably, it also includes a displacement adjustment unit, which includes a lead screw, a connecting plate, a fixing rope, a rotating handle, a bushing, and a housing. The housing has an opening on its side wall. The lead screw is rotatably installed inside the housing. The rotating handle is fixedly installed at one end of the lead screw. The bushing is slidably installed inside the housing and is threadedly connected to the lead screw. The connecting plate is installed on the bushing and is connected to the base plate. Fixing ropes are installed at both ends of the housing.

[0011] Preferably, the base plate and the connecting plate are connected by a snap-fit ​​mechanism, allowing for quick assembly and disassembly.

[0012] Preferably, the cylinder includes a piston cylinder and a piston rod. The piston cylinder has through holes at both ends. A sealing sleeve is rotatably installed on the outer side wall of the piston cylinder via a threaded connection. A sealing ring is installed on the inner side wall of the sealing sleeve.

[0013] Compared with existing technologies, this utility model has the following beneficial effects:

[0014] 1. This invention uses an air pump in conjunction with an electromagnetic reversing valve to drive a cylinder in reciprocating motion, thereby inducing passive foot and ankle movements in patients with femoral fractures. These foot and ankle movements do not require the use of the leg, thus not affecting femoral rehabilitation. The exercise promotes blood circulation in the lower limbs, thereby preventing venous stasis.

[0015] 2. When the patient needs to perform active foot and ankle movements, the air pump can be turned off and the sealing sleeve can be rotated to open the through hole. This reduces the resistance generated by the air cylinder due to exhaust when the patient pushes the support plate with their foot, increases the contraction strength of the calf muscles, promotes blood return in the lower limbs, and avoids applying additional resistance that may lead to increased local stress, affecting the stability of internal fixation or delaying healing.

[0016] 3. This utility model uses a sliding plate mounted on a support plate. When the patient actively or passively performs foot and ankle movements, the strap unit fixes the sliding plate to the patient's foot, so the two move synchronously, avoiding friction on the patient's foot and preventing skin damage.

[0017] 4. The displacement adjustment unit of this utility model adjusts the position of the base plate, allowing it to be fixed in any position on the hospital bed, providing rehabilitation training for patients while ensuring their comfort and avoiding any resistance. Furthermore, the base plate and connecting plate are connected by snap-fit ​​mechanisms, allowing for quick disassembly and convenient storage. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. The elements or parts in the drawings are not necessarily drawn to scale.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 yes Figure 1 Enlarged view of a portion of point A in the middle.

[0021] Figure 3 This is a side view of the present invention.

[0022] Figure 4 This is a top view of the present invention.

[0023] Explanation of key figure labels:

[0024] 1. Mounting box; 2. Control panel; 3. Support plate; 4. Air pipe; 5. Cylinder; 51. Piston cylinder; 6. Strap unit; 61. Strap body; 62. Rotating shaft; 7. Base plate; 8. Arc groove; 9. Slide groove; 10. Slide plate; 11. Limiting plate; 12. Lead screw; 13. Connecting plate; 14. Rotating handle; 15. Sealing sleeve; 16. Housing; 17. Opening; 18. Through hole; 19. Sealing ring; 20. Bushing. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] The embodiments will be described in detail below to enable those skilled in the art to better understand the present invention:

[0027] An assistive device for preventing venous thrombosis includes a mounting box 1, a cylinder 5, an air pump, a control panel 2, a support plate 3, an air tube 4, a solenoid reversing valve, a strap unit 6, and a base plate 7. The mounting box 1 is bolted to the base plate 7. The air pump and the solenoid reversing valve are installed inside the mounting box 1. The air pump and the solenoid reversing valve are connected via the air tube 4. The cylinder 5 has air tube 4 interfaces at both ends, and both ends of the cylinder 5 are connected to the solenoid reversing valve via the air tube 4. The solenoid reversing valve is used to switch the air intake direction of the cylinder 5, thereby enabling the cylinder 5 to reciprocate. The fixed end of the cylinder 5 is hinged to the base plate 7, and the movable end of the cylinder 5 is hinged to one side of the support plate 3. One end of the support plate 3 is hinged and mounted on the base plate 7. The strap unit 6 is installed on the side of the support plate 3 away from the cylinder 5 and is used to secure the patient's foot to the support plate 3. Control panel 2 is mounted on the side wall of mounting box 1. Both the air pump and the solenoid reversing valve are electrically connected to control panel 2. A throttle valve is installed at the exhaust port of the solenoid reversing valve and is electrically connected to control panel 2. Medical personnel can start or stop the air pump via control panel 2. They can also control the reciprocating speed of cylinder 5 by controlling the throttle valve and the air pump, thereby adjusting the passive movement of the patient's foot and ankle to a suitable speed, promoting blood circulation in the lower limbs while avoiding impact on femoral recovery. The air pump here requires a stable and continuous air supply to allow the support plate 3 to move the patient's foot and ankle at a stable and uniform speed. Therefore, if a piston-type air pump is used, it needs to be used in conjunction with an air tank and a pressure regulating valve. A diaphragm-type air pump does not require additional components and has a simpler structure, but is more expensive; it can be used according to the actual situation.

[0028] The base plate 7 has an arc-shaped groove 8 at the end away from the mounting box 1. The line connecting the strap unit 6 and the arc-shaped groove 8 is parallel to the support plate 3. The arc-shaped groove 8 is covered with elastic material, such as rubber, latex and sponge. The arc-shaped groove 8, together with the elastic material, can better fit the patient's heel, provide comfortable support for the patient's foot and avoid patient discomfort.

[0029] Cylinder 5 includes a piston cylinder 51 and a piston rod. Piston cylinder 51 has through holes 18 at both ends. A sealing sleeve 15 is rotatably mounted on the outer wall of piston cylinder 51 via a threaded connection. A sealing ring 19 is embedded in the inner wall of the sealing sleeve 15. When cylinder 5 is needed to move the patient's ankle, medical staff can rotate the sealing sleeve 15 to seal the through holes 18, preventing gas from escaping. When the patient needs to actively perform ankle flexion-pointing movements, in the early postoperative stage, before the fracture ends have healed, applying additional resistance may increase local stress, affecting the stability of internal fixation or delaying healing. Simultaneously, excessive resistance may worsen postoperative limb swelling or pain, which is detrimental to recovery. However, because the trachea 4 has a small diameter, manual air intake and exhaust will generate significant resistance within piston cylinder 51. Therefore, rotating the sealing sleeve 15 can open the through holes 18, allowing for rapid adjustment of air pressure balance through external communication and avoiding resistance.

[0030] In the mid-to-late stages of rehabilitation, after the doctor confirms the stability of the fracture, low-resistance assisted training can be gradually introduced to restore muscle strength and joint range of motion, while maintaining venous return efficiency. At this time, the through-hole 18 can be gradually closed by the sealing sleeve 15, and the resistance can be gradually increased by adjusting the throttle valve to reduce the cross-sectional area of ​​the mass flow, providing the patient with scientific and reasonable rehabilitation training.

[0031] The support plate 3 has multiple grooves 9, within which sliders are slidably mounted. One end of each slider is bolted to a slide plate 10, and the other end is bolted to a limit plate 11. When the patient actively or passively moves their foot and ankle, the strap unit 6 secures the slide plate 10 to the patient's foot, causing them to move synchronously. This prevents friction on the patient's foot and avoids skin damage. Furthermore, the adjustable slide plate 10 allows the invention to be adapted to feet of different sizes and lengths, enhancing its practicality.

[0032] One end of the strap body 61 is mounted on one side of the slide plate 10, and the pivot 62 is mounted on the other side of the slide plate 10. Velcro is attached to the strap body 61, and the other end of the strap body 61 passes through the pivot 62 and is secured by the Velcro. The Velcro allows for quick adjustment of the strap's working length, enabling its use with different patients and improving the practicality of this application.

[0033] The displacement adjustment unit includes a lead screw 12, a connecting plate 13, a fixing rope, a rotating handle 14, a bushing 20, and a housing 16. An opening 17 is provided on the side wall of the housing 16. The lead screw 12 is rotatably mounted inside the housing 16 via bearings, and the rotating handle 14 is fixed to one end of the lead screw 12 with bolts. The bushing 20 is slidably mounted inside the housing 16 and is threadedly connected to the lead screw 12. The connecting plate 13 is mounted on the bushing 20 and connected to the base plate 7. Fixing ropes are installed at both ends of the housing 16, which can be used to fix the housing 16 to the hospital bed. Medical staff can then rotate the rotating handle 14 to adjust the base plate 7 to any position along the axis of the lead screw 12, ensuring the patient's leg extension angle is in a suitable position and preventing discomfort. With the movable adjustment unit, the air pump can be powered by batteries, preventing the movement of the support plate 3 from affecting the wiring.

[0034] When a patient needs to use this application in a situation other than a hospital bed, such as while in a wheelchair, if the displacement adjustment unit is not required, it can be quickly disassembled by the snap fasteners and then fixed to the place where it is needed. The snap fastener connection can reduce the time required for this process.

[0035] In summary, the procedure for using this application is as follows: The housing 16 is fixed to the hospital bed using a fixing rope. The position of the support plate 3 is adjusted to fit the patient's legs by rotating the handle 14. The patient's heel is placed in the arc-shaped groove 8, and the patient's foot is connected to the support plate 3 using a strap. The air pump is started via the control panel 2. The air pump, in conjunction with the electromagnetic reversing valve, drives the support plate 3 to reciprocate, thereby causing the patient to perform passive flexion-extension movements. When the patient needs to perform active flexion-extension movements, the sealing sleeve 15 can be rotated to open the through hole 18, reducing the resistance during the flexion-extension movements.

[0036] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An assistive device for preventing venous thrombosis, characterized in that, The system includes a mounting box (1), a cylinder (5), an air pump, a control panel (2), a support plate (3), an air pipe (4), a solenoid directional valve, a strap unit (6), and a base plate (7). One end of the support plate (3) is rotatably mounted on the base plate (7). The mounting box (1) is mounted on the base plate (7). The air pump and the solenoid directional valve are mounted inside the mounting box (1). The air pump and the solenoid directional valve are connected via the air pipe (4). The fixed end of the cylinder (5) is rotatably connected to the base plate (7). The movable end of the cylinder (5) is rotatably connected to one side of the support plate (3). The cylinder (5) is provided with air pipe (4) interfaces at both ends. The cylinder (5) is connected to the electromagnetic reversing valve through air pipe (4). The strap unit (6) is installed on the side of the support plate (3) away from the cylinder (5) and is used to fix the patient's foot on the support plate (3). The control panel (2) is installed on the side wall of the mounting box (1). The air pump and the electromagnetic reversing valve are both electrically connected to the control panel (2).

2. The assistive device for preventing venous thrombosis according to claim 1, characterized in that, The bottom plate (7) has an arc groove (8) at one end away from the mounting box (1), and the arc groove (8) is covered with an elastic material.

3. The assistive device for preventing venous thrombosis according to claim 1, characterized in that, It also includes a throttle valve, which is installed at the exhaust port of the electromagnetic reversing valve and is electrically connected to the control panel (2).

4. An auxiliary activity device for preventing venous thrombosis according to claim 1, characterized in that, The support plate (3) has multiple grooves (9), and a slider is slidably installed in the groove (9). A slide plate (10) is installed on one end of the slider, and a limit plate (11) is installed on the other end of the slider. The strap unit (6) is installed on the slide plate (10).

5. An auxiliary activity device for preventing venous thrombosis according to claim 4, characterized in that, The strap unit (6) includes a strap body (61), a pivot (62) and a Velcro strap. One end of the strap body (61) is mounted on one side of the skateboard (10), the pivot (62) is mounted on the other side of the skateboard (10), the Velcro strap is mounted on the strap body (61), and the other end of the strap body (61) passes through the pivot (62) and is fixed by the Velcro strap.

6. An auxiliary activity device for preventing venous thrombosis according to claim 1, characterized in that, The device includes a displacement adjustment unit, which comprises a lead screw (12), a connecting plate (13), a fixing rope, a rotating handle (14), a bushing (20), and a housing (16). The housing (16) has an opening (17) on its side wall. The lead screw (12) is rotatably installed inside the housing (16). The rotating handle (14) is fixedly installed at one end of the lead screw (12). The bushing (20) is slidably installed inside the housing (16) and is threadedly connected to the lead screw (12). The connecting plate (13) is installed on the bushing (20) and is connected to the base plate (7). Fixing ropes are installed at both ends of the housing (16).

7. An auxiliary activity device for preventing venous thrombosis according to claim 6, characterized in that, The base plate (7) and the connecting plate (13) are connected by a snap-fit, allowing for quick assembly and disassembly.

8. An auxiliary activity device for preventing venous thrombosis according to claim 1, characterized in that, The cylinder (5) includes a piston cylinder (51) and a piston rod. The piston cylinder (51) has through holes (18) at both ends. A sealing sleeve (15) is rotatably installed on the outer side wall of the piston cylinder (51) by a threaded connection. A sealing ring (19) is installed on the inner side wall of the sealing sleeve (15).

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