Device for detection of deep vein thrombosis of lower limb
Patent Information
- Application Number
- PCT/CN2025/101736
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-03-18
- Filing Date
- 2025-06-18
- Publication Date
- 2026-09-24
Smart Images

Figure CN2025101736_24092026_PF_FP_ABST
Abstract
Description
A device for detecting deep vein thrombosis in the lower extremities Technical Field
[0001] This invention relates to the field of thrombosis detection technology, specifically to a device for detecting deep vein thrombosis in the lower extremities. Background Technology
[0002] Deep vein thrombosis (DVT) refers to the abnormal clotting of blood in the deep veins. It is a disease of lower extremity venous return obstruction. Thrombosis mostly occurs during immobilization (especially major orthopedic surgery). The three main pathogenic factors are slow blood flow, venous wall damage, and hypercoagulable state. After thrombosis, except for a few that can dissolve spontaneously or remain localized to the site of occurrence, most will spread to the main deep veins of the entire limb. If it is not diagnosed and treated in time, most will develop into post-thrombotic sequelae, which will affect the patient's quality of life for a long time. Some patients may also develop pulmonary embolism, which can cause extremely serious consequences. Deep vein thrombosis in the lower extremities can be diagnosed through examinations, including ultrasound, CT scan, and MRI.
[0003] However, current ultrasound examinations require patients to lie flat, which is inconvenient for patients who are weak. Climbing onto and getting off the examination bed is slow and difficult, resulting in excessive preparation time, reduced testing efficiency, and low safety. Therefore, this invention provides a deep vein thrombosis detection device for the lower extremities to meet people's needs. Summary of the Invention
[0004] This invention provides a deep vein thrombosis detection device for the lower extremities, which can effectively solve the problems mentioned in the background art, such as the need for patients to lie flat during ultrasound detection, which is inconvenient for patients due to physical weakness, and the slow and difficult process of climbing onto and getting off the examination bed, resulting in excessive preparation time, reduced detection efficiency, and low safety.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a deep vein thrombosis detection device for the lower extremities, comprising a base, a fixed vertical plate fixedly connected to one end of the top of the base, guide grooves symmetrically opened on both sides of the fixed vertical plate, a pad movably installed at one end of the fixed vertical plate, a movable block symmetrically fixedly connected to one end of the pad, a hydraulic telescopic rod symmetrically fixedly installed in the middle of the top of the base, an extension plate fixedly connected to one end of the base, elastic buffer plates equidistantly fixedly installed at the top of the extension plate, guide cylinders symmetrically and movably installed through both sides of the extension plate, and a foot pedal fixedly connected between the tops of the guide cylinders;
[0006] A fixed box is fixedly installed at one end of the foot pedal. Electric push rods are symmetrically fixedly installed inside the fixed box. A limiting strip is fixedly connected between the ends of the two electric push rods. An arc-shaped limiting block is symmetrically fixedly installed at the top end of the foot pedal away from the limiting strip.
[0007] A mounting base is fixedly installed at the top of the fixed vertical plate, and an ultrasound machine is fixedly installed at the top of the mounting base. A detection probe is fixedly connected to one end of the ultrasound machine.
[0008] Preferably, the two movable blocks are respectively movably engaged inside the two guide grooves, the pad and the fixed vertical plate are slidably connected through the movable blocks and the guide grooves, and the top ends of the two hydraulic telescopic rods are connected to the bottom end of the pad.
[0009] Preferably, the extension plate has symmetrically opened circular holes on both sides, the guide cylinder moves through the circular holes, and the bottom end of the foot pedal is in contact with the elastic buffer plate.
[0010] Preferably, the bottom end of the limiting strip is in contact with the top end of the foot pedal, and one end of each of the two arc-shaped limiting blocks is provided with an arc-shaped groove facing the limiting strip.
[0011] Preferably, each of the four corners of the base is equipped with a movable wheel, and two fixed plates are symmetrically fixedly installed on both sides of the base. Adjusting studs are installed through both ends of the two fixed plates, and a support block is fixedly connected to the bottom of each adjusting stud.
[0012] Preferably, the adjusting stud and the fixing plate are connected by a thread, and a rotating block is fixedly connected to the top of the adjusting stud.
[0013] Compared with the prior art, the advantages of this utility model are: the structure of this utility model is scientific and reasonable, and it is safe and convenient to use.
[0014] 1. The device is equipped with a guide groove, a pad, a hydraulic telescopic rod, an extension plate, an elastic buffer plate, a guide cylinder, and a foot pedal. The pad and foot pedal work together to allow the patient to remain seated during the examination, eliminating the need for lying down during deep vein thrombosis detection in the lower extremities. This makes the operation more convenient, reduces the time required for lying down and standing, and enhances safety. The hydraulic telescopic rod and guide groove allow for height adjustment of the pad, ensuring it matches the patient's height and leg length, allowing the lower limbs to be placed smoothly on the foot pedal for easier examination by medical staff. The elastic buffer plate and guide cylinder cushion the foot pedal, reducing the force when the lower limbs fall and supporting the patient's lower limbs after placement, keeping them relaxed.
[0015] 2. It is equipped with a fixed box, an electric push rod, a limiting strip, and an arc-shaped limiting block. By using the electric push rod, the position of the limiting strip is adjusted. The limiting strip moves forward and contacts the patient's heel. Then, the limiting strip and the arc-shaped limiting block can clamp and stabilize the patient's foot from both front and back, improving the stability during the examination and preventing deviations from causing errors in the test results.
[0016] 3. Equipped with casters, fixed plates, adjusting studs, and support blocks, the casters improve the flexibility of the equipment's movement, making it easier to transport and move. Meanwhile, the adjusting studs allow for adjustment of the height of the support blocks, providing support and limiting the base during testing, thus improving the stability of the equipment during testing. Attached Figure Description
[0017] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.
[0018] In the attached diagram:
[0019] Figure 1 is a structural schematic diagram of this utility model;
[0020] Figure 2 is a schematic diagram of the installation structure of the electric push rod of this utility model;
[0021] Figure 3 is a schematic diagram of the installation structure of the elastic buffer plate of this utility model;
[0022] Figure 4 is a schematic diagram of the installation structure of the guide cylinder of this utility model;
[0023] The following are the labels in the diagram: 1. Base; 2. Fixed vertical plate; 3. Guide groove; 4. Pad; 5. Movable block; 6. Hydraulic telescopic rod; 7. Extension plate; 8. Elastic buffer plate; 9. Guide cylinder; 10. Foot pedal; 11. Fixed box; 12. Electric push rod; 13. Limiting strip; 14. Arc-shaped limiting block; 15. Mounting base; 16. Ultrasound machine; 17. Detection probe; 18. Moving wheel; 19. Fixed strip; 20. Adjusting stud; 21. Support block. Detailed Implementation
[0024] The preferred embodiments of the invention patent are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the invention.
[0025] Example: As shown in Figures 1-4, this invention provides a technical solution: a deep vein thrombosis detection device for the lower extremities, including a base 1. A fixed vertical plate 2 is fixedly connected to one end of the top of the base 1. Guide grooves 3 are symmetrically formed on both sides of the fixed vertical plate 2. A pad 4 is movably installed at one end of the fixed vertical plate 2. Movable blocks 5 are symmetrically fixedly connected to one end of the pad 4. Hydraulic telescopic rods 6 are symmetrically fixedly installed in the middle of the top of the base 1. Two movable blocks 5 are respectively movably engaged inside the two guide grooves 3. The pad 4 and the fixed vertical plate 2 are slidably connected through the movable blocks 5 and the guide grooves 3. The top ends of the two hydraulic telescopic rods 6 are connected to the bottom ends of the pad 4. An extension plate 7 is fixedly connected to one end of the base 1. Elastic buffer plates 8 are equidistantly fixedly installed at the top of the extension plate 7. Guide cylinders 9 are symmetrically and movably installed through both sides of the extension plate 7. A guide cylinder is fixedly connected between the top ends of the guide cylinders 9. The foot pedal 10 has symmetrical circular holes on both sides of the extension plate 7. The guide cylinder 9 moves through the circular holes. The bottom end of the foot pedal 10 fits against the elastic buffer plate 8. Through the cooperation of the pad 4 and the foot pedal 10, the patient can maintain a sitting posture for the test. When performing deep vein thrombosis detection in the lower extremities, there is no need to lie down, making the operation more convenient, reducing the time required for lying down and standing up, and improving safety. At the same time, through the cooperation of the hydraulic telescopic rod 6 and the guide groove 3, the height of the pad 4 can be adjusted so that the height of the pad 4 matches the height and leg length of the patient, so that the lower limbs can be placed smoothly on the foot pedal 10, making it convenient for medical staff to perform the examination. The elastic buffer plate 8 and the guide cylinder 9 play a role in cushioning and protecting the foot pedal 10, relieving the force when the lower limbs fall, and supporting the patient's lower limbs after placement, keeping them in a relaxed state.
[0026] A fixed box 11 is fixedly installed at one end of the foot pedal 10. Electric push rods 12 are symmetrically fixedly installed inside the fixed box 11. A limiting strip 13 is fixedly connected between the ends of the two electric push rods 12. An arc-shaped limiting block 14 is symmetrically fixedly installed at the top end of the foot pedal 10 away from the limiting strip 13. The bottom end of the limiting strip 13 is in contact with the top end of the foot pedal 10. An arc-shaped groove is opened at one end of each of the two arc-shaped limiting blocks 14, and the arc-shaped groove faces the limiting strip 13. By using the electric push rods 12, the position of the limiting strip 13 is adjusted. The limiting strip 13 moves forward and contacts the patient's heel. Thus, the limiting strip 13 and the arc-shaped limiting block 14 can clamp and stabilize the patient's foot from both front and rear directions, improving the stability during the examination and preventing deviations during the test from causing errors in the test results.
[0027] A mounting base 15 is fixedly installed at the top of the fixed vertical plate 2, and an ultrasound machine 16 is fixedly installed at the top of the mounting base 15. A detection probe 17 is fixedly connected to one end of the ultrasound machine 16.
[0028] The base 1 has four casters 18 installed at its four corners. The base 1 has two fixed plates 19 fixedly installed symmetrically on its two sides. The two ends of the fixed plates 19 are each fitted with an adjusting stud 20. The bottom of the adjusting stud 20 is fixedly connected to a support block 21. The adjusting stud 20 and the fixed plate 19 are connected by threads. The top of the adjusting stud 20 is fixedly connected to a rotating block. The casters 18 improve the flexibility of the equipment and make it easier to move and transfer. At the same time, the adjusting stud 20 can be used to adjust the height of the support block 21, which supports and limits the base 1 during the testing process, improving the stability of the equipment during testing.
[0029] The working principle and usage process of this invention are as follows: First, the operator uses the movable wheels 18 to push and move the equipment to the predetermined detection position. By rotating the adjusting stud 20, the position of the support block 21 is adjusted, causing the support block 21 to gradually descend and press firmly against the ground, providing stable support for the bottom of the equipment. The patient who needs to undergo lower limb detection sits directly on the pad 4, with both feet placed on the foot pedal 10. The elastic buffer plate 8 has a certain deformation buffering capacity, which plays a role in buffering and stabilizing the impact on the foot pedal 10. When the pad 4 is not high enough, the patient's feet will squeeze it, and the elastic buffer plate 8 will be squeezed and deformed. The deformation of the elastic buffer plate 8 provides some relief for the patient and prevents leg injuries. The folding and compression of the lower body can cause discomfort. Depending on the patient's height and leg length, there will be a difference in the tilt angle of the two feet after placement. The hydraulic telescopic rod 6 is extended or retracted to push the pad 4 up and down. The movable block 5 always slides along the guide groove 3, which plays a guiding and stabilizing role for the pad 4 and improves the stability of the pad 4. The patient's feet are flat against the surface of the foot pedal 10. After the pad 4 is raised or lowered to a certain extent, the patient's thigh and calf form a 90-degree angle. The medical staff controls the hydraulic telescopic rod 6 to stop extending and retracting. The elastic buffer plate 8 deforms and returns to its original shape, supporting the foot pedal 10 and the patient's feet, so that the patient's lower limbs can remain relaxed and the thigh and calf of the lower limbs can be exposed, which greatly facilitates comprehensive examination.
[0030] The patient's two toes are respectively in close contact with two arc-shaped limiting blocks 14. The electric push rod 12 extends forward, pushing the limiting strip 13 forward until the limiting strip 13 is in contact with the patient's heel, which plays a role in clamping and stabilizing the patient's foot, so that it will not shift during the test. Medical staff use B-ultrasound machine 16 and detection probe 17 to detect the patient's lower limbs. The patient's lower limbs are kept in a vertical position when sitting. The detection probe 17 is used to scan and detect whether there is a blood clot inside.
[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A deep vein thrombosis detection device for lower limbs, comprising a base (1), characterized in that: A fixed vertical plate (2) is fixedly connected to one end of the top of the base (1). Guide grooves (3) are symmetrically opened on both sides of the fixed vertical plate (2). A pad (4) is movably installed on one end of the fixed vertical plate (2). A movable block (5) is symmetrically fixedly connected to one end of the pad (4). A hydraulic telescopic rod (6) is symmetrically fixedly installed in the middle of the top of the base (1). An extension plate (7) is fixedly connected to one end of the base (1). An elastic buffer plate (8) is equidistantly fixedly installed on the top of the extension plate (7). Guide cylinders (9) are symmetrically and movably installed through both sides of the extension plate (7). A foot pedal (10) is fixedly connected between the tops of the guide cylinders (9). A fixed box (11) is fixedly installed at one end of the foot pedal (10). Electric push rods (12) are symmetrically fixedly installed inside the fixed box (11). A limiting strip (13) is fixedly connected between the ends of the two electric push rods (12). An arc-shaped limiting block (14) is symmetrically fixedly installed at the top end of the foot pedal (10) away from the limiting strip (13). The top of the fixed vertical plate (2) is fixedly installed with a mounting base (15), and the top of the mounting base (15) is fixedly installed with an ultrasound machine (16). One end of the ultrasound machine (16) is fixedly connected with a detection probe (17).
2. The deep vein thrombosis detection device of a lower limb according to claim 1, wherein, The two movable blocks (5) are respectively movably engaged inside the two guide grooves (3). The pad (4) and the fixed vertical plate (2) are slidably connected through the movable blocks (5) and the guide grooves (3). The top ends of the two hydraulic telescopic rods (6) are connected to the bottom end of the pad (4).
3. The deep vein thrombosis detection device of a lower limb according to claim 1, wherein, The extension plate (7) has symmetrically opened round holes on both sides, the guide cylinder (9) moves through the round holes, and the bottom end of the foot pedal (10) is in contact with the elastic buffer plate (8).
4. The deep vein thrombosis detection device of the lower limbs according to claim 1, characterized in that, The bottom end of the limiting strip (13) is in contact with the top end of the foot pedal (10), and one end of each of the two arc-shaped limiting blocks (14) is provided with an arc-shaped groove facing the limiting strip (13).
5. The deep vein thrombosis detection device of the lower limb according to claim 1, characterized in that, The base (1) has four corners at the bottom of each of its four sides equipped with casters (18). The base (1) has two fixed plates (19) symmetrically fixed on its two sides. Both ends of the two fixed plates (19) are fitted with adjusting studs (20). The bottom of each adjusting stud (20) is fixedly connected to a support block (21).
6. The deep vein thrombosis detection device of a lower limb according to claim 5, wherein, The adjusting stud (20) and the fixing plate (19) are connected by threads, and a rotating block is fixedly connected to the top of the adjusting stud (20).