Safety nursing device for preventing lower limb vein embolism after gynecological operation

Abstract

The invention discloses a safety nursing device for preventing lower limb vein embolism after gynecological operation in the technical field of medical nursing, which comprises a fixing plate, the top end of the fixing plate is symmetrically and fixedly connected with first wrapping assemblies used for supporting the two legs of a patient and symmetrically and fixedly connected with second wrapping assemblies used for supporting the feet of the patient, a plurality of air bag layers are arranged on the inner surfaces of the first wrapping assemblies in a circular array mode, and massage assemblies are slidably connected to the interiors of the first wrapping assemblies; pushing assemblies communicating with the air bag layer are symmetrically arranged in the first wrapping assemblies. The pump assembly is communicated with the air bag layer; the pushing assembly is hinged to the massage assembly. Inflation pressurization / deflation decompression is performed through the air bag layer so as to press gastrocnemius muscle groups of the shanks of the patient, foot movement and shank massage of the patient are synchronously helped, the patient is helped to prevent lower limb vein embolism from multiple aspects, and the prevention efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical care, and particularly relates to a safety nursing device for preventing lower limb venous embolism after gynecological surgery. Background Art

[0002] After gynecological surgery, due to slow blood flow, vascular wall damage, and hypercoagulable state of the blood after surgery, patients are prone to lower limb venous thrombosis. Especially for surgeries involving the pelvic cavity, due to factors such as surgical trauma, reduced postoperative activity, and hypercoagulable state of the blood, lower limb venous thrombosis is likely to occur. Therefore, prevention of lower limb venous embolism is usually required after gynecological surgery.

[0003] In the prior art, the patent with the authorized publication number CN208799443U discloses a safety nursing device for preventing lower limb venous embolism after gynecological surgery, including a mounting plate. The top of the mounting plate is provided with a telescopic panel and a fixing plate, and the fixing plate is hinged to the telescopic panel through a hinge. The bottom of the front and rear sides of the mounting plate is fixedly welded with side plates, and the side plates are provided with threaded through holes. At the one-third positions of the front and rear sides of the left end inside the mounting plate, there are sliding grooves, and sliders are symmetrically arranged in the two sliding grooves on the front and rear sides. A connecting column is arranged between the two sliders, and a push-pull handle is fixedly welded on the outer side of the slider. Through holes are provided at the horizontal symmetrical positions of the front and rear sides of the mounting plate and located on both sides of the two sliding grooves. The push-pull handle passes through the through holes and is located outside the mounting plate. A first telescopic rod is fixedly arranged on the slider, and the first telescopic rod passes through the top wall of the mounting plate and is hinged to the end of the telescopic panel far from the hinge. A placement groove is arranged at the left end of the telescopic panel. Second telescopic rods are arranged on the front and rear sides in the middle of the telescopic panel, and the second telescopic rods are provided with grooves. This nursing device adjusts the angle of the telescopic panel to lift the patient's lower limbs and bend the knee joint, so as to avoid compressing the deep vein return of the calf, reduce the force that the patient himself has to bear, and reduce the incidence of lower limb deep vein embolism after gynecological surgery. This device only lifts the patient's lower limbs to bend the knee joint to prevent compression of the deep vein return of the calf. However, in the hypercoagulable state of the blood, the preventive effect of this method will also be greatly reduced. Although some existing devices also massage the calf part during lifting to promote blood flow (assist the movement of the gastrocnemius muscle group), the blood circulation in the leg not only passes through the calf, but also through the foot. Reduced ankle pump movement caused by pain or drainage tube restrictions will also cause aggravated blood stasis.

[0004] Therefore, the present invention proposes a safety nursing device for preventing lower limb venous embolism after gynecological surgery, which nurses the patient's lower limbs based on various factors causing lower limb venous embolism to solve the above problems. Summary of the Invention

[0005] To solve the above problems, the present invention provides a safety nursing device for preventing lower limb venous embolism after gynecological surgery. By changing the air pressure, it presses the gastrocnemius muscle group of the patient's calf, and simultaneously helps the patient move the foot and massage the calf, preventing lower limb venous embolism for the patient from multiple aspects and improving the prevention efficiency.

[0006] To achieve the above object, the technical solution of the present invention is as follows: A safety nursing device for preventing lower limb venous embolism after gynecological surgery includes a fixing plate. Fixed nuts are provided on both sides in the width direction of the fixing plate. Symmetrically fixed to the top of the fixing plate are a first wrapping component for supporting the patient's legs and symmetrically fixed is a second wrapping component for supporting and moving the patient's feet. A number of airbag layers are circularly arranged on the inner surface of the first wrapping component. Inside the first wrapping component, a massage component for massaging the patient's calf is slidably connected. Inside the first wrapping component, a pushing component communicating with the airbag layer is symmetrically arranged at both ends. One end of the pushing component extends outside the wrapping component and is hinged to the second wrapping component; it also includes a pump component communicating with the airbag layer; the pushing component is hinged to the massage component;

[0007] When the airbag layer inflates and pressurizes / deflates and decompresses to press the gastrocnemius muscle group of the patient's calf, it drives the pushing component to swing the second wrapping component to help the patient move the foot, and when the second wrapping component swings, it synchronously drives the massage component to massage the patient's calf.

[0008] Principle of the basic solution: The pump component periodically inflates and pressurizes (simulating muscle contraction) and deflates and decompresses (simulating muscle relaxation) the airbag layer, applying rhythmic pressure to the gastrocnemius muscle group. When pressurizing, it squeezes the deep veins to promote blood reflux; when decompressing, the veins refill again, forming a "pump-like" cycle to break the state of venous stasis. When the airbag expands, the pushing component moves inward, and through the hinge point, it pulls the second wrapping component to dorsiflex the foot; when the airbag contracts, the pushing component retracts, and the foot plantar flexes, forming passive flexion and extension of the ankle joint. The movement of the foot enhances the passive stretching of the calf muscles, synergistically with the air pressure pressing to improve the venous return efficiency and prevent joint stiffness at the same time. When the second wrapping component swings, it drives the massage component to slide longitudinally along the calf through the pushing component, and the rollers or bumps produce a wavy massage, and the dynamic massage promotes local blood circulation, relieves muscle atrophy caused by postoperative immobilization, and reduces the risk of thrombosis.

[0009] The beneficial effects of adopting the above solution are as follows: 1. Compared with the prior art, this solution realizes multi-level intervention through a triple synergistic mechanism of air pressure pressing, foot swinging, and dynamic massage;

[0010] Air pressure pressing on the gastrocnemius muscle group: directly simulates the muscle pump effect, periodically squeezing the deep veins (such as the posterior tibial vein and the peroneal vein), promoting blood flow towards the heart;

[0011] Passive ankle pump exercise: By pushing the components to link the dorsiflexion / plantar flexion of the foot, the ankle joint range of motion is enhanced, the plantar venous plexus is stimulated to empty, and the blood stasis of the foot is reduced;

[0012] Longitudinal wave massage: The massage component slides longitudinally along the calf, generating wave-like pressure from the distal end (ankle) to the proximal end (knee), assisting the unidirectional opening of the venous valve and forming a directional blood flow drive.

[0013] The synergy of the three mechanisms can significantly increase the venous blood flow velocity in the lower limbs, and is significantly better than single lifting or local massage.

[0014] 2. In the existing technology, it is difficult for patients to actively perform ankle pump exercises due to pain or drainage tube restrictions, and traditional passive exercise devices require step-by-step operation (such as lifting first, then massaging), which is inefficient. This solution uses a seamless design of pneumatic drive-mechanical linkage to promote the pneumatic-mechanical conversion mechanism of the component, so that the foot swing and the inflation and deflation of the airbag are completely synchronized. The patient can complete the ankle pump exercise without actively exerting force, avoiding the decrease in compliance caused by postoperative pain. At the same time, the airbag layer acts on the calf, pushing the component to drive the foot, and the massage component covers the entire length of the calf, realizing the full-length blood flow drive of "foot-ankle joint-calf-knee pit", which is especially suitable for patients with limited lower limb movement after pelvic surgery.

[0015] Furthermore, the first wrapping components all include a support platform fixedly connected to the fixed plate, the support platform is hinged with a movable pillar, and one end of the movable pillar is hinged with a U-shaped sleeve; the airbag layers are arrayed on the inner wall of the U-shaped sleeve.

[0016] Beneficial effect: The airbag layer is arranged in a circular array on the inner wall of the U-shaped sleeve, forming an "embracing" package when inflated. The gastrocnemius, soleus and tibialis anterior muscles are evenly covered through the coordinated expansion of the airbags.

[0017] Furthermore, the massage components each include a sliding cavity opened inside the U-shaped sleeve, a curved slide is slidably fitted in the sliding cavity, a plurality of connecting pieces are arrayed along the circumference of the curved slide on the inner wall of the curved slide, and a plurality of massage protrusions are arrayed along the length direction of the connecting piece at one end of the connecting piece away from the curved slide;

[0018] The inner wall of the U-shaped sleeve is provided with a first sliding groove connected to the sliding cavity at a position between adjacent airbag layers, and the connecting pieces correspond to the first sliding grooves one by one; second sliding grooves connected to the sliding cavity are provided on both sides in the length direction of the U-shaped sleeve, and massage sliders fixedly connected to the arc-shaped sliding pieces are slidably fitted in the second sliding grooves, and the massage sliders are hinged with massage connecting rods on the sides away from each other, and the massage connecting rods are hinged to the second wrapping assembly at one end away from the massage sliders.

[0019] Beneficial effects: While the arc-shaped sliding plate longitudinally slides along the U-shaped sleeve (through the second sliding groove), the connecting piece can be circumferentially fine-tuned along with the arc-shaped sliding plate, enabling the massage bumps to form a composite motion trajectory of "longitudinal translation + circumferential undulation", simulating the wave-like kneading of human hands, deeply stimulating the myofascial layer, and promoting the emptying of the venous plexus. The foot swing of the second wrapping component directly drives the massage slider through the massage connecting rod, converting the linear displacement of the foot swing into the smooth sliding of the arc-shaped sliding plate, ensuring strict synchronization between the pneumatic drive and the massage action.

[0020] Furthermore, the pushing components all include a pushing cavity opened inside the U-shaped sleeve. Pistons are slidably fitted to the inner walls of the pushing cavities. Springs are fixedly connected to the left ends of the pistons, and the left ends of the springs are fixedly connected to the inner walls of the pushing cavities. Push rods are fixedly connected to the right ends of the pistons. The ends of the push rods far from the pistons all extend outside the U-shaped sleeve and are hinged to the second wrapping component. The push rods are slidably fitted to the U-shaped sleeve. An air delivery channel communicating with the airbag layer is provided at the right end of the pushing cavity.

[0021] Beneficial effects: When the airbag layer inflates / deflates, the air pressure directly acts on the piston through the air delivery channel, converting the gas pressure into the linear mechanical displacement of the push rod to drive the foot swing. This design eliminates the traditional motor or hydraulic system, reducing energy consumption and noise, and is especially suitable for the postoperative ward environment. The spring and the piston are linked to form a two-way elastic constraint: when inflating, the spring compresses to store energy, and when deflating, the elastic potential energy is released to push the piston back to its original position, ensuring strict synchronization between the movement of the push rod and the rhythm of the airbag, avoiding mechanical hysteresis, and enhancing the periodic stability of the foot swing.

[0022] Furthermore, the second wrapping components all include a foot placement plate and support plates symmetrically and fixedly connected to the fixing plate. Support blocks are fixedly connected to the sides of the support plates close to each other, and the bottoms of the support blocks are fixedly connected to the fixing plate. Sliding grooves are opened at positions on the sides of the support blocks close to each other and near the top of the support blocks. Swing sliders are slidably fitted in the sliding grooves. Swing rods are hinged to the sides of the swing sliders close to each other. The tops of the swing rods are hinged to the corresponding massage connecting rods. The ends of the push rods far from the U-shaped sleeve are hinged to the corresponding swing rods. Both sides of the foot placement plate are respectively fixed to the swing rods.

[0023] Beneficial effects: The thrust of the push rod is divided through the hinge network of the swing rod - sliding groove - massage connecting rod, converting a single linear drive into the composite motion (dorsiflexion / plantar flexion + inversion / eversion) of the foot placement plate, accurately simulating the natural ankle pump action, breaking through the limitation of the single-plane motion of traditional devices, and enhancing the emptying effect of the plantar venous plexus.

[0024] Furthermore, the hinge point between the swing rod and the swing slider is set as the first hinge point, the hinge point between the swing rod and the push rod is set as the second hinge point, and the hinge point between the swing rod and the massage connecting rod is set as the third hinge point; the distance between the first hinge point and the second hinge point is greater than the distance between the first hinge point and the third hinge point.

[0025] Beneficial effects: The design that the second hinge point (the acting point of the push rod) is far from the first hinge point (the fulcrum) forms a long force arm structure, which efficiently converts the linear thrust of the push rod into the rotational torque of the swing rod around the fulcrum, significantly amplifying the driving force on the massage connecting rod, ensuring that sufficient longitudinal sliding force is generated when the massage component swings on the foot, and enhancing the intensity of deep muscle stimulation. The lever layout of the long input force arm (the second hinge point) and the short output force arm (the third hinge point) reduces the driving force required for the push rod, while reducing the movement inertia of the massage connecting rod and suppressing mechanical vibration. The moment difference on both sides of the fulcrum forms a self-balancing effect, ensuring that the foot swing and the massage action remain smooth and stable even under high-speed cycling, and avoiding joint impact.

[0026] Furthermore, the tops of all the support blocks are located within the movement trajectory of the bottom end of the swing rod.

[0027] Beneficial effects: The top of the support block serves as the physical stop point for the bottom end of the swing rod, restricting its downward movement amplitude and forcing the swing rod to form an instantaneous rotation fulcrum around the top of the support block. When the push rod pushes the swing rod, this fulcrum converts the linear thrust of the push rod into the directional lifting force of the foot placement plate, ensuring that the foot is steadily lifted at a preset angle (such as 15° - 25°), further promoting blood circulation in the patient's legs and improving the preventive effect.

[0028] Furthermore, the distance between the second hinge point and the first hinge point is greater than the distance between the second hinge point and the bottom end of the swing rod.

[0029] Beneficial effects: The second hinge point is far from the fulcrum (the first hinge point), forming a long input force arm. After the thrust of the push rod is amplified by the lever effect, it is transmitted to the bottom end of the swing rod, significantly reducing the initial air pressure intensity required for airbag driving, reducing the energy consumption of the pump assembly, and extending the equipment life. The short force arm design at the bottom end of the swing rod reduces the linear displacement range of the foot swing, making the lifting angle change of the foot placement plate more gentle (such as 10° - 20° of dorsiflexion), avoiding the sudden start and stop of the traditional long force arm structure, and reducing joint impact and muscle pulling discomfort.

[0030] Furthermore, a number of straps are provided on the surfaces of both the U-shaped sleeve and the foot placement plate.

[0031] Beneficial effects: The strap design enhances the fit between the device and the limb, prevents the U-shaped sleeve and the foot placement plate from shifting during movement, and ensures the accurate transmission of air pressure pressing and foot swing; the adjustable tightness adapts to postoperative edema or individual differences, avoids local compression overload, and takes into account both the fixing reliability and the wearing comfort.

[0032] Furthermore, it further includes a controller and an angle sensor arranged at the first hinge point. The angle sensor and the pump assembly are both electrically connected to the controller; when the swing amplitude of the foot placement plate is greater than the preset safety value, the controller controls the pump assembly to deflate and decompress the airbag layer to reset the foot placement plate.

[0033] Beneficial effects: The angle sensor continuously monitors the foot swing angle. When the amplitude exceeds the preset safety threshold (such as dorsiflexion > 30° or plantar flexion > 50°), the controller immediately triggers the airbag layer to release pressure, causing the foot placement plate to automatically reset, avoiding joint hyperextension or Achilles tendon strain. The controller dynamically adjusts the airbag inflation rate and the push rod stroke according to the angle feedback, ensuring that the foot swing is always within a smooth and low-impact physiological safety range.

[0034] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Brief Description of the Drawings

[0035] Figure 1 It is an overall rear axonometric view of an embodiment of the safety nursing device for preventing lower limb venous embolism after gynecological surgery according to the present invention;

[0036] Figure 2 It is an overall front axonometric view of an embodiment of the safety nursing device for preventing lower limb venous embolism after gynecological surgery according to the present invention;

[0037] Figure 3 It is a schematic diagram of the linkage between the massage component and the second wrapping component of an embodiment of the safety nursing device for preventing lower limb venous embolism after gynecological surgery according to the present invention;

[0038] Figure 4 It is a schematic diagram of the fixing plate of an embodiment of the safety nursing device for preventing lower limb venous embolism after gynecological surgery according to the present invention;

[0039] Figure 5 It is a lateral sectional view of the massage component of an embodiment of the safety nursing device for preventing lower limb venous embolism after gynecological surgery according to the present invention;

[0040] Figure 6 It is a front sectional view of the pushing component of an embodiment of the safety nursing device for preventing lower limb venous embolism after gynecological surgery according to the present invention.

[0041] Reference numerals in the accompanying drawings of the specification include: 1, fixing plate; 2, support plate; 3, foot placement plate; 4, massage connecting rod; 5, U-shaped sleeve; 6, support block; 7, movable strut; 8, support table; 9, airbag layer; 10, connecting piece; 11, swing rod; 12, push rod; 13, massage slider; 14, swing slider; 15, arc-shaped sliding piece; 16, massage bump; 17, spring; 18, piston; 19, air delivery channel. Detailed Embodiments

[0042] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0043] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The following will be further described in detail through specific embodiments:

[0046] Embodiment 1:

[0047] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 : A safety nursing device for preventing lower limb venous embolism after gynecological surgery, including a fixing plate 1. Fixed nuts are provided on both sides in the width direction of the fixing plate 1. Symmetrically fixed connections are provided at the top of the fixing plate 1 with a first wrapping component for supporting the patient's legs and symmetrically fixed connections with a second wrapping component for supporting and moving the patient's feet. A plurality of airbag layers 9 are circularly arranged on the inner surface of the first wrapping component. A massage component for massaging the patient's calves is slidably connected inside the first wrapping component. A pushing component communicating with the airbag layer 9 is symmetrically arranged inside the first wrapping component. One end of the pushing component extends outside the wrapping component and is hinged to the second wrapping component; it also includes a pump component communicating with the airbag layer 9; the pushing component is hinged to the massage component.

[0048] When the airbag layer 9 is inflated / pressurized and deflated / decompressed to press the gastrocnemius muscle group of the patient's calf, the driving and pushing component makes the second wrapping component swing to assist the patient's foot movement, and when the second wrapping component swings, it synchronously drives the massage component to massage the patient's calf.

[0049] Specifically, each first wrapping component includes a support platform 8 fixedly connected to the fixing plate 1 by screws. Activity struts 7 are hinged to the support platforms 8, and U-shaped sleeves 5 are hinged to one ends of the activity struts 7. The airbag layers 9 are arrayed on the inner walls of the U-shaped sleeves 5. Place the patient's legs (calves) in the two U-shaped sleeves 5, and inflate / pressurize and deflate / decompress the airbag layers 9 through the pump component, so as to assist the activities of muscle groups such as the gastrocnemius muscle group of the patient and help the blood circulation of the patient's lower limbs.

[0050] There are various causes for the occurrence of lower limb venous embolism after gynecological surgery. For example: immobility and lack of activity, surgical type and duration, anesthesia method, etc. Among them, immobility and lack of activity mainly include: 1. The DVT risk of patients staying in bed > 48 hours after surgery increases by 4 times (due to the disappearance of the gastrocnemius pump function); 2. Pain or drainage tube restriction leads to a reduction in ankle pump movement and aggravation of blood stasis. The existing technology mainly focuses on dealing with the first point or single factor of immobility and lack of activity, and the blood in the lower limbs circulates through the patient's calf and foot during circulation, so only relatively single prevention methods such as calf massage / pressure are carried out, and the prevention effect of lower limb venous embolism is limited.

[0051] Specifically, each pushing component includes a pushing cavity opened inside the U-shaped sleeve 5. Pistons 18 are slidably fitted to the inner walls of the pushing cavities. Springs 17 are bonded to the left ends of the pistons 18 (as Figure 6 shown), and the left ends of the springs 17 are bonded to the inner walls of the pushing cavities. Push rods 12 are fixedly connected to the right ends of the pistons 18 by screws. One ends of the push rods 12 away from the pistons 18 extend to the outside of the U-shaped sleeve 5 and are hinged to the second wrapping component. The push rods 12 are slidably fitted to the U-shaped sleeve 5; an air delivery channel 19 communicating with the airbag layer 9 is provided at the right end of the pushing cavity. First, when the airbag layer 9 is inflated / pressurized by the above-mentioned pump component, the air pressure changes (the air pressure rises), causing the piston 18 to move leftward in the pushing cavity. At the same time, when the airbag layer 9 is deflated / decompressed, the spring 17 makes the piston 18 move rightward and reset in the pushing cavity (as Figure 6 shown), so as to realize the reciprocating movement of the push rod 12 and provide a driving force for the periodic swing of the second wrapping component.

[0052] Specifically, each second wrapping component includes a foot placement plate 3 and support plates 2 symmetrically and fixedly connected to the fixed plate 1. On the side where the support plates 2 are close to each other, support blocks 6 are fixedly connected, and the bottoms of the support blocks 6 are fixedly connected to the fixed plate 1. On the side where the support blocks 6 are close to each other and near the top of the support blocks 6, chutes are formed. Swing sliders 14 are slidably fitted in the chutes. On the side where the swing sliders 14 are close to each other, swing rods 11 are hinged. At the top of the swing rods 11, massage connecting rods 4 corresponding to the swing rods 11 are hinged. At the end of the push rod 12 away from the U-shaped sleeve 5, the push rod 12 is hinged to the corresponding swing rod 11. Both sides of the foot placement plate 3 are respectively fixed to the swing rods 11. When the push rod 12 reciprocates, the swing rod 11 rotates a certain angle around its hinge point with the swing slider 14 according to the stroke of the push rod 12, so that the foot placement plate 3 fixedly connected to the swing rod 11 tilts at a corresponding angle, enabling the patient's ankle to move. Thus, through the dual effects of calf pressing and ankle movement, the possibility of preventing lower limb venous thrombosis is significantly reduced.

[0053] At the same time, since the patient's calves and feet need to move with the assistance of the device, the patient's lower limbs (calves and feet) need to be firmly fixed to the U-shaped sleeve 5 and the foot placement plate 3 respectively. Therefore, a number of straps are provided on the surfaces of the U-shaped sleeve 5 and the foot placement plate 3 to fix the patient's calves and feet. At the same time, the tops of the support blocks 6 are all within the movement trajectory of the bottoms of the swing rods 11. That is, during the back-and-forth swing of the swing rods 11, the foot placement plate 3 and the U-shaped sleeve 5 can be lifted by a certain height through the contact between the swing rods 11 and the support blocks 6, which helps the thighs to move as well, further assisting the patient's lower limb rehabilitation movement and reducing the possibility of lower limb venous thrombosis.

[0054] In addition, in the conventional methods for preventing lower limb venous thrombosis after gynecological surgery, massaging the lower limbs is also one of them, that is, massaging muscle groups such as the gastrocnemius muscle group of the patient's calves.

[0055] In this solution, specifically, the massage components include a sliding cavity opened inside the U-shaped sleeve 5, and an arc-shaped slide 15 is slidably fitted in the sliding cavity. The inner wall of the arc-shaped slide 15 has a plurality of connecting pieces 10 arrayed along the circumferential direction of the arc-shaped slide 15, and the connecting piece 10 is arrayed along the length direction of the connecting piece 10 at one end away from the arc-shaped slide 15. The massage protrusions 16 are preferably silicone rubber to ensure that the patient's skin is not damaged during massage; the inner wall of the U-shaped sleeve 5 is provided with a first sliding groove connected to the sliding cavity at a position between adjacent airbag layers 9, and the connecting pieces 10 correspond one-to-one to the first sliding groove; second sliding grooves connected to the sliding cavity are opened on both sides of the U-shaped sleeve 5 in the length direction, and massage sliders 13 fixedly connected to the arc-shaped slide 15 are slidably fitted in the second sliding grooves, and the massage sliders 13 are hinged to the massage connecting rod 4 on the side away from each other, and the massage connecting rod 4 is hinged to the swing rod 11 at one end away from the massage slider 13. When the swing rod 11 swings, it drives the massage connecting rod 4 to move, further causing the massage slider 13 to slide in the second sliding groove, thereby causing the arc-shaped slide 15 to slide in the sliding cavity, and then driving the connecting piece 10 on its inner wall and the massage protrusion 16 to move along the length direction of the calf to achieve massage, that is, forming a four-fold preventive measure with the above-mentioned calf pressing, ankle movement and thigh movement, significantly improving the prevention effect of lower limb venous thrombosis in patients.

[0056] The specific implementation process is as follows: Ms. Zhang, a 45-year-old patient, returned to the ward after undergoing hysteromyomectomy. The doctor ordered 24-hour bed rest and prevention of lower extremity venous thrombosis. The nurse used this device for passive rehabilitation intervention.

[0057] Place the fixed plate 1 at the end of the bed and lock it with the fixing nuts on both sides to ensure the stability of the device. Place the patient's legs into the U-shaped sleeve 5 and adjust the hinge angle of the movable support 7 so that the U-shaped sleeve 5 fits the calf curvature (avoiding compression of the fibula head). Place the foot on the foot support plate 3 and secure the ankle joint and dorsum of the foot with a strap, tightening it to accommodate one finger. The controller then presets the safe swing angle (dorsiflexion ≤ 25°, plantar flexion ≤ 45°) and the air pressure cycle (inflation 30 seconds / deflation 30 seconds).

[0058] When the pump assembly inflates the airbag layer 9, the airbags on the inner wall of the U-shaped sleeve 5 expand sequentially from the distal end (ankle side) to the proximal end (knee side). The pressure gradient squeezes the gastrocnemius muscle group, simulating the muscle pump effect and promoting venous blood return. The air pressure in the cavity rises, pushing the piston 18 to the left to compress the spring 17, and the push rod 12 retracts inward, driving the swing arm 11 to rotate clockwise around its hinge point with the swing slider 14, driving the foot dorsiflexion (about 20°). When the swing arm 11 rotates, the massage connecting rod 4 is pulled, and the massage slider 13 slides along the second sliding groove toward the knee side, driving the arc-shaped slide 15 and the connecting piece 10 to move longitudinally. The massage bump 16 presses the posterior calf muscle group in a wave-like manner from the ankle to the knee pit. The dorsiflexion of the foot simultaneously stretches the Achilles tendon, stimulates the emptying of the plantar veins, and forms a synergistic blood flow drive with the airbag pressure.

[0059] The pump assembly stops inflating, the airbag layer 9 releases pressure, the spring 17 rebounds and pulls the piston 18 to move rightward, the push rod 12 extends, the swing rod 11 resets counterclockwise, the foot naturally plantar flexes (about 40°), the massage slider 13 slides in the reverse direction, and the arc-shaped sliding plate 15 drives the massage bump 16 to return to its position, avoiding muscle fatigue caused by one-way massage. The airbag pressing and the foot swing increase the peak velocity of the femoral vein by 70%, effectively preventing blood stasis.

[0060] Embodiment 2:

[0061] The difference from Embodiment 1 is that, as Figure 3 shown, the hinge point between the swing rod 11 and the swing slider 14 is set as the first hinge point, the hinge point between the swing rod 11 and the push rod 12 is set as the second hinge point, and the hinge point between the swing rod 11 and the massage connecting rod 4 is set as the third hinge point; the distance between the first hinge point and the second hinge point is greater than the distance between the first hinge point and the third hinge point. The distance between the second hinge point and the first hinge point is greater than the distance between the second hinge point and the bottom end of the swing rod 11. The thrust of the push rod 12 acts on the second hinge point (long force arm section), and the driving force is amplified by 2-3 times through the lever effect, significantly reducing the inflation pressure requirement of the airbag layer 9 (0.2 MPa is required in Embodiment 1, and only 0.1 MPa is required in Embodiment 2), reducing the load of the pump assembly. The third hinge point is close to the fulcrum, making the displacement amplitude of the massage connecting rod 4 strictly synchronized with the foot swing. For example, when the foot dorsiflexes 20°, the sliding distance of the massage slider 13 increases by 30%, ensuring that the wavy massage covers the entire length of the calf. At the same time, the short force arm design at the bottom end of the swing rod 11 reduces the linear displacement of the foot swing, and the rate of change of the dorsiflexion angle is reduced by 50%, avoiding instantaneous joint overload.

[0062] Embodiment 3:

[0063] The difference from Embodiment 2 is that it further includes a controller and an angle sensor arranged at the first hinge point, and both the angle sensor and the pump assembly are electrically connected to the controller; when the swing amplitude of the foot placement plate 3 is greater than the preset safety value, the controller controls the pump assembly to deflate and decompress the airbag layer 9 to reset the foot placement plate 3. A high-precision angle sensor is built into the first hinge point (the hinge between the swing rod 11 and the swing slider 14) to monitor the rotation angle of the swing rod 11 in real time. The angle sensor and the pump assembly are both electrically connected to the controller (such as an embedded single-chip microcomputer), forming a "monitoring - decision - execution" closed loop.

[0064] The controller presets the foot swing safety threshold (such as dorsiflexion ≤ 25°, plantar flexion ≤ 45°), and triggering protection will occur when the range is exceeded. The upper limit of the airbag pressure is set (such as 40 mmHg) to prevent excessive compression.

[0065] The airbag layer 9 periodically inflates and drives the push rod 12, causing the foot to swing at a preset angle. The angle sensor continuously feeds data back to the controller. When the swing angle is within a safe range, the system maintains the current air pressure cycle, and the massage and lifting movements are synchronized.

[0066] For example, if a patient experiences a sudden foot spasm, the angle sensor detects a sudden increase in the foot dorsiflexion angle to 32° (exceeding the threshold). The controller immediately identifies the anomaly, sends an emergency pressure relief command to the pump assembly, and cuts off the air supply to push rod 12. The airbag layer 9 releases pressure within 0.5 seconds, the push rod 12 loses its driving force, the spring 17 pushes the piston 18 back to its original position, and the swing rod 11 is blocked by the top limit of the support block 6. The foot stops swinging and slowly returns to the neutral position. At the same time, the massage action stops sliding to avoid secondary stimulation. After the anomaly is resolved (such as the patient's spasm is relieved), the controller automatically restarts and resets the inflation cycle of the airbag layer 9. If the protection is triggered more than three times in a row, the system locks and sounds an alarm, prompting medical personnel to intervene.

[0067] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A safety nursing device for preventing lower limb venous thrombosis after gynecological surgery, comprising a fixing plate (1), wherein fixing nuts are provided on both sides of the fixing plate (1) in the width direction, and characterized in that: The top of the fixing plate (1) is symmetrically fixedly connected with a first wrapping component for supporting the patient's legs and a second wrapping component for supporting the patient's feet. The inner surface of the first wrapping component is provided with a plurality of airbag layers (9) in a circular array. The inside of the first wrapping component is slidably connected with a massage component for massaging the patient's calf. The inside of the first wrapping component is symmetrically provided with a pushing component connected to the airbag layer (9). One end of the pushing component extends to the outside of the wrapping component and is hinged to the second wrapping component. The first wrapping component also includes a pump component connected to the airbag layer (9). The pushing component is hinged to the massage component. When the airbag layer (9) is inflated and pressurized / deflated to press the gastrocnemius muscle group of the patient's calf, the driving component causes the second wrapping component to swing to help the patient's foot movement, and when the second wrapping component swings, the massage component is synchronously driven to massage the patient's calf.

2. The safety nursing device for preventing lower extremity venous thrombosis after gynecological surgery according to claim 1, characterized in that: The first wrapping components all include a support platform (8) fixedly connected to the fixed plate (1), the support platform (8) is hinged with a movable support (7), and one end of the movable support (7) is hinged with a U-shaped sleeve (5); the airbag layers (9) are arrayed on the inner wall of the U-shaped sleeve (5).

3. The safety nursing device for preventing lower extremity venous thrombosis after gynecological surgery according to claim 2, characterized in that: The massage components each include a sliding cavity opened inside a U-shaped sleeve (5), a curved sliding plate (15) slidingly fitted in the sliding cavity, a plurality of connecting plates (10) arrayed along the circumference of the curved sliding plate (15) on the inner wall of the curved sliding plate (15), and a plurality of massage protrusions (16) arrayed along the length direction of the connecting plate (10) at one end of the connecting plate (10) away from the curved sliding plate (15); The inner wall of the U-shaped sleeve (5) is provided with a first sliding groove connected to the sliding cavity at a position between adjacent airbag layers (9), and the connecting pieces (10) correspond to the first sliding grooves one by one; the U-shaped sleeve (5) is provided with a second sliding groove connected to the sliding cavity on both sides in the length direction, and the second sliding grooves are slidably fitted with a massage slider (13) fixedly connected to the arc-shaped slider (15), and the massage sliders (13) are hinged to a massage connecting rod (4) on the side away from each other, and the massage connecting rod (4) is hinged to the second wrapping component on the end away from the massage slider (13).

4. The safety nursing device for preventing lower extremity venous thrombosis after gynecological surgery according to claim 3, characterized in that: The pushing components all include a pushing cavity opened inside the U-shaped sleeve (5), the inner wall of the pushing cavity is slidably matched with a piston (18), the left end of the piston (18) is fixedly connected to a spring (17), the left end of the spring (17) is fixedly connected to the inner wall of the pushing cavity, the right end of the piston (18) is fixedly connected to a push rod (12), the end of the push rod (12) away from the piston (18) extends to the outside of the U-shaped sleeve (5) and is hinged to the second wrapping component, and the push rod (12) is slidably matched with the U-shaped sleeve (5); the right end of the pushing cavity is provided with an air supply channel (19) connected to the airbag layer (9).

5. The safety nursing device for preventing lower extremity venous thrombosis after gynecological surgery according to claim 4, characterized in that: The second wrapping components include a foot placement plate (3) and a support plate (2) symmetrically fixedly connected to the fixed plate (1); the support plates (2) are fixedly connected to a support block (6) on one side close to each other, and the bottom of the support block (6) is fixedly connected to the fixed plate (1); the support blocks (6) are close to each other and are provided with a slide groove at a position close to the top of the support block (6); a swing slider (14) is slidably fitted in the slide groove; the swing slider (14) is hinged to a swing rod (11) on one side close to each other; the top of the swing rod (11) is hinged to a massage connecting rod (4) corresponding to the swing rod (11); the end of the push rod (12) away from the U-shaped sleeve (5) is hinged to the swing rod (11) corresponding to the push rod (12); both sides of the foot placement plate (3) are respectively fixed to the swing rod (11).

6. The safety nursing device for preventing lower extremity venous thrombosis after gynecological surgery according to claim 5, characterized in that: The hinge point between the swing lever (11) and the swing slider (14) is set as a first hinge point, the hinge point between the swing lever (11) and the push rod (12) is set as a second hinge point, and the hinge point between the swing lever (11) and the massage connecting rod (4) is set as a third hinge point; the distance between the first hinge point and the second hinge point is greater than the distance between the first hinge point and the third hinge point.

7. The safety nursing device for preventing lower extremity venous thrombosis after gynecological surgery according to claim 6, characterized in that: The top ends of the support blocks (6) are all located within the motion track of the bottom end of the swing rod (11).

8. The safety nursing device for preventing lower extremity venous thrombosis after gynecological surgery according to claim 7, characterized in that: The distance between the second hinge point and the first hinge point is greater than the distance between the second hinge point and the bottom end of the swing rod (11).

9. The safety nursing device for preventing lower extremity venous thrombosis after gynecological surgery according to claim 1, characterized in that: The surfaces of the U-shaped sleeve (5) and the foot placement plate (3) are both provided with a plurality of binding straps.

10. The safety nursing device for preventing lower limb venous thrombosis after gynecological surgery according to claim 9, characterized in that: It also includes a controller and an angle sensor arranged at the first hinge point, and the angle sensor and the pump assembly are both electrically connected to the controller; when the swing amplitude of the foot placement board (3) is greater than a preset safety value, the controller controls the pump assembly to deflate the airbag layer (9) and reduce the pressure, thereby resetting the foot placement board (3).

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