Exercise device for preventing lower limb thrombus caused by coronary heart disease

Abstract

The invention discloses an exercise device for preventing coronary heart disease lower limb thrombus, and belongs to the technical field of medical rehabilitation equipment. The device comprises a transmission case, pedals hinged to the two sides of the transmission case, a leg surrounding sleeve and a massage assembly arranged in the leg surrounding sleeve. A transmission shaft is arranged in the transmission box, a second driving motor and a resistance adjusting mechanism are arranged on the transmission shaft, and seamless switching and multi-stage resistance adjustment of a passive pedaling motion mode and an active pedaling motion mode can be achieved. The leg surrounding sleeve is in linkage with the pedal plate through the flexible connecting belt, and the circular ring structure in the leg surrounding sleeve moves up and down in the pedaling process to drive the massage balls and the massage rollers to synchronously massage leg muscles, so that blood circulation is promoted. The lower limb deep vein thrombosis prevention device is compact in structure, easy and convenient to operate, capable of effectively preventing lower limb deep vein thrombosis and improving the comfort level of a patient and rehabilitation training compliance, and suitable for clinical rehabilitation of coronary heart disease postoperative and long-term bedridden patients.

Description

Technical Field

[0001] This invention belongs to the field of medical rehabilitation equipment technology, specifically relating to an exercise device for preventing lower limb thrombosis in patients with coronary heart disease. Background Technology

[0002] Patients with coronary artery disease often require a period of bed rest after undergoing interventional cardiac surgery or bypass surgery to reduce the workload on their heart. In addition, some patients with heart failure also experience a significant reduction in their daily activity levels. Prolonged bed rest or sitting can lead to slow blood circulation in the lower limbs and weakened muscle pump function, greatly increasing the risk of deep vein thrombosis (DVT) in the lower extremities.

[0003] Currently, the intermittent pneumatic compression devices routinely used in clinical practice can only provide periodic passive external compression. The mode is singular, unable to achieve active muscle strength training, and lacks benign stimulation of leg muscles, resulting in poor patient comfort. On the other hand, the active ankle pump exercises or simulated pedaling movements guided by the patients have problems such as low compliance and inability to guarantee the range and frequency of movement due to factors such as postoperative weakness, pain, and sedation. Although existing lower limb joint rehabilitation devices can provide passive joint movement, their movement trajectory is fixed and singular, lacking a synergistic training mechanism for multiple muscle groups in the lower limbs, and cannot provide synchronous leg massage during exercise to further promote blood circulation.

[0004] Therefore, existing technologies cannot effectively meet the dual needs of bedridden patients for lower limb circulation exercises and muscle relaxation. There is an urgent clinical need for a rehabilitation exercise device that integrates passive and active pedaling movements, multi-level resistance adjustment, and synchronous leg massage functions. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention proposes an exercise device for preventing lower limb thrombosis in patients with coronary heart disease. This device integrates passive and active pedaling movements, multi-level resistance adjustment, and synchronous leg massage functions, which can effectively promote blood circulation in the lower limbs, prevent deep vein thrombosis, and improve patient comfort and treatment compliance.

[0006] The exercise device for preventing lower extremity thrombosis in coronary heart disease of the present invention includes a transmission box, on which two foot pedals are hinged via a transmission shaft.

[0007] The foot pedal is equipped with toe sleeves to secure the feet, and is connected upwards to the bottom of the leg wrap via a flexible connecting strap;

[0008] The leg wrap has a massage component inside;

[0009] A second drive motor and a resistance adjustment mechanism are located in the middle of the drive shaft;

[0010] The resistance adjustment mechanism includes a brake disc mounted on a transmission shaft, a U-shaped frame fixed in a transmission box, and brake plates mounted on both sides of the brake disc. The brake plates are connected to a clamping plate via connecting columns. The clamping plate is connected to a connecting plate. A guide rod and a lead screw pass through the connecting plate. One end of the lead screw is connected to a first drive motor.

[0011] The massage component includes a ring that slides inside the leg sleeve. The ring has a sliding pin that engages with a groove on the leg sleeve and is hinged to the rear end of the foot pedal via a traction strap, so that the ring moves up and down during pedaling.

[0012] The ring contains massage balls and massage rollers mounted via a connecting frame. The massage balls and massage rollers rotate and massage the legs as the ring moves.

[0013] The surface of the foot pedal is provided with convex balls.

[0014] The massage balls and massage rollers are arranged in a ring to form a space that covers the legs.

[0015] The lead screw has threads with opposite directions of rotation from the center to both ends, which is used to achieve symmetrical clamping and release of the brake plate.

[0016] The flexible connecting belt is made of elastic material and can provide appropriate traction during pedaling.

[0017] The leg sleeve is made of flexible material and has internal grooves to guide the movement trajectory of the sliding pin.

[0018] The beneficial effects of this invention are:

[0019] Compared with existing technologies, this invention achieves seamless switching between passive and active pedaling modes and multi-level resistance adjustment through the synergistic action of the transmission box, drive motor, and resistance adjustment mechanism, which can adapt to the muscle strength and circulation training needs of patients at different rehabilitation stages. Simultaneously, during the pedaling motion, mechanical linkage drives the massage components within the leg sleeve to move up and down, causing the massage balls and rollers to rotate synchronously with the movement and provide beneficial stimulation to the leg muscles, further enhancing blood circulation and relieving muscle stiffness. Furthermore, the device has a compact overall structure and strong adaptability, facilitating clinical promotion and bedside use. It not only significantly improves patient comfort and treatment compliance but also effectively prevents the formation of deep vein thrombosis in the lower extremities through the organic combination of exercise and massage, demonstrating high rehabilitation benefits and clinical application value. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the motion device in the embodiment.

[0021] Figure 2 This is a schematic diagram of the internal structure of the motion device in the embodiment.

[0022] Figure 3 This is a schematic diagram of the leg sleeve structure of the motion device in the embodiment.

[0023] Figure 4 This is a schematic diagram of the massage component structure of the motion device in the embodiment.

[0024] Figure 5 This is a schematic diagram of the resistance adjustment mechanism of the motion device in the embodiment.

[0025] In the picture:

[0026] 1-Transmission box, 101-Mounting base, 2-Drive shaft, 3-Foot pedal, 301-Toe sleeve, 302-Convex ball, 4-Flexible connecting belt, 5-Leg wrap, 501-Slide groove, 6-Tethering belt, 7-Massage assembly, 701-Ring, 702-Massage ball, 703-Massage roller, 704-Connecting frame, 705-Sliding pin, 8-Resistance adjustment mechanism, 801-U-shaped frame, 802-Brake disc, 803-Brake plate, 804-Connecting column, 805-Clamping plate, 805-Connecting plate, 806-Guide rod, 807-Screw rod, 808-First drive motor, 9-Second drive motor. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Example 1

[0029] See Figures 1 to 5 As shown, the exercise device for preventing lower limb thrombosis in coronary heart disease in this embodiment includes a transmission box 1, foot pedals 3 hinged to both sides of the transmission box 1, toe sleeves 301 for fixing the feet, a flexible connecting strap 4 connecting the foot pedals 3 and the leg sleeve 5, and a massage component 7 disposed inside the leg sleeve 5.

[0030] The transmission box 1 is mounted on the bed surface via the mounting base 101.

[0031] Inside the transmission box 1, a second drive motor 9 and a resistance adjustment mechanism 8 are installed in the middle of the transmission shaft 2; these are used to adjust the resistance when the patient is passively pedaling and actively pedaling, respectively.

[0032] The resistance adjustment mechanism 8 specifically includes a brake disc 802 fixed on the drive shaft 2 and a U-shaped frame 801 installed in the transmission box 1. Both ends of the U-shaped frame 801 are sleeved on the drive shaft 2. Brake plates 803 are provided on both sides of the brake disc 802. The brake plates 803 are connected to a clamping plate 805 via a connecting post 804. The clamping plate 805 is further connected to the connecting plate 805. A guide rod 806 and a lead screw 807 pass through the connecting plate 805. The lead screw 807 has threads with opposite directions of rotation from its center to both ends. One end of the lead screw 807 is connected to a first drive motor 808. By rotating the motor forward and reverse, the brake plates 803 can be symmetrically clamped or released, thereby achieving multi-level adjustment of the resistance of the drive shaft 2.

[0033] The surface of the foot pedal 3 is provided with a protruding ball 302, which is used to stimulate acupoints on the soles of the patient's feet.

[0034] The leg sleeve 5 has a sliding ring 701 inside, and several sliding pins 705 extend from the outer side of the ring 701. The sliding pins 705 engage with the sliding grooves 501 on the leg sleeve 5. One of the sliding pins 705 is hinged to the rear end of the foot pedal 3 via a pull strap 6, so that the ring 701 can move up and down with the foot pedal 3 during pedaling. Rotatable massage balls 702 and massage rollers 703 are mounted inside the ring 701 via a connecting frame 704. During the up-and-down movement of the ring 701, the massage balls 702 and massage rollers 703 can rotate and synchronously massage the leg muscles. The massage balls 702 and massage rollers 703 are arranged in a ring, forming a covering space suitable for different leg shapes.

[0035] Working principle:

[0036] The device supports both passive and active exercise modes. In passive mode, the second drive motor 9 starts, driving the transmission shaft 2 to rotate, which in turn drives the foot pedal 3 to perform periodic pedaling movements, suitable for patients who are weak or sedated after surgery. In active mode, the patient performs the pedaling movements voluntarily, and the resistance adjustment mechanism 8 can adjust the exercise resistance according to the rehabilitation stage to achieve muscle strength training.

[0037] During the pedaling motion, the movement of the foot pedal 3 is transmitted to the ring 701 inside the leg sleeve 5 via the pull belt 6, causing it to move up and down along the slide groove 501. The massage ball 702 and massage roller 703 inside the ring 701 rotate during the movement, providing synchronous massage to the leg muscles, stimulating blood circulation, and relieving muscle stiffness.

[0038] Through the aforementioned mechanical linkage, this device organically combines lower limb pedaling movements with leg massage functions, which not only effectively promotes blood return and reduces the risk of thrombosis, but also significantly improves patient comfort and treatment compliance, making it suitable for coronary heart disease patients at different stages of rehabilitation.

[0039] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not describe all details exhaustively, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification.

Claims

1. An exercise device for preventing lower extremity thrombosis in patients with coronary heart disease, characterized in that, It includes a transmission box (1), on which two foot pedals (3) are hinged via a transmission shaft (2); The foot pedal (3) is provided with toe sleeves (301) for fixing the foot, and is connected upward to the bottom of the leg wrap sleeve (5) by a flexible connecting strap (4); The leg wrap (5) has a massage component (7) inside; The transmission shaft (2) is equipped with a second drive motor (9) and a resistance adjustment mechanism (8) in the middle; The resistance adjustment mechanism (8) includes a brake disc (802) mounted on the transmission shaft (2), a U-shaped frame (801) fixed in the transmission box (1), and brake plates (803) mounted on both sides of the brake disc (802). The brake plates (803) are connected to the clamping plate (805) via a connecting column (804). The clamping plate (805) is connected to the connecting plate (805). A guide rod (806) and a lead screw (807) pass through the connecting plate (805). One end of the lead screw (807) is connected to a first drive motor (808). The massage component (7) includes a ring (701) that slides inside the leg sleeve (5). The ring (701) is provided with a sliding pin (705). The sliding pin (705) cooperates with the sliding groove (501) on the leg sleeve (5) and is hinged to the rear end of the foot pedal (3) through the pull strap (6), so that the ring (701) moves up and down during the pedaling process. The ring (701) contains a massage ball (702) and a massage roller (703) mounted via a connecting frame (704). The massage ball (702) and the massage roller (703) rotate and massage the legs as the ring (701) moves.

2. The exercise device for preventing lower extremity thrombosis in patients with coronary heart disease according to claim 1, characterized in that, The surface of the foot pedal (3) is provided with a convex ball (302).

3. The exercise device for preventing lower extremity thrombosis in patients with coronary heart disease according to claim 1, characterized in that, The massage ball (702) and massage roller (703) are arranged in a ring to form a space that covers the legs.

4. The exercise device for preventing lower extremity thrombosis in patients with coronary heart disease according to claim 1, characterized in that, The lead screw (807) has threads with opposite directions of rotation from the center to both ends, which are used to achieve symmetrical clamping and release of the brake plate (803).

5. The exercise device for preventing lower extremity thrombosis in patients with coronary heart disease according to claim 1, characterized in that, The flexible connecting strip (4) is made of elastic material and can provide appropriate traction during pedaling.

6. The exercise device for preventing lower extremity thrombosis in patients with coronary heart disease according to claim 1, characterized in that, The leg sleeve (5) is made of flexible material and has a groove (501) inside to guide the movement trajectory of the sliding pin (705).

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