Rechargeable movable infusion support for patient activity rehabilitation training

Abstract

The invention discloses a rechargeable movable infusion support for patient activity rehabilitation training, which comprises an infusion rod main body, a hand push rod, a movable seat, an automatic braking system, an automatic leveling system and a detachable battery module, lockable universal wheels are arranged on the movable seat, and the hand push rod is arranged on the infusion rod main body and pushes the movable infusion support; the automatic brake system is linked with the universal wheels and the hand push rod, unlocks the universal wheels during pushing and automatically locks the universal wheels during stopping, safety and operation convenience are improved, the automatic leveling system monitors ground inclination, adjusts the movable seat to keep horizontal and prevents the infusion support from inclining laterally, and the battery module comprises a power supply battery box and a control box for recording the walking distance and regulating the system. The detachable design of the battery box and the control box guarantees continuous power supply, the activity time of a patient is prolonged, the infusion rod body is provided with the wire containing pipe with the wire containing groove, winding of a pipeline is avoided, and the infusion support integrates the functions of moving, safe locking, automatic leveling, long-acting power supply and the like, gives consideration to convenience and safety and is convenient to use.

Description

Technical Field

[0001] This invention relates to medical assistive devices, specifically to a rechargeable mobile infusion stand for patient activity rehabilitation training. Background Technology

[0002] The application of enhanced recovery after surgery (ERAS) has significantly shortened hospital stays, reduced medical costs, and decreased the incidence of perioperative complications in clinical practice. Early mobilization is an important measure of ERAS.

[0003] Currently, traditional upright IV stands are commonly used in hospital wards and postoperative recovery areas. These stands typically consist of a base, a vertical rod, and a suspension hook. Their original design purpose was to provide stable intravenous infusion support for patients in a static environment. However, when encouraging and assisting patients to get out of bed and participate in early rehabilitation training, traditional IV stands reveal numerous functional deficiencies, severely restricting their application in dynamic rehabilitation scenarios. Specifically, these deficiencies manifest in the following ways: 1. No built-in power supply, limited mobility: Some postoperative patients need to use 24-hour maintenance medications, such as vasoactive drugs and drugs that inhibit glandular secretion. Some patients who use enteral nutrition pumps cannot guarantee the continuous infusion of medications and enteral nutrition solutions when they get out of bed and move around, if the micro-pump and enteral nutrition pump are not charged enough. They must return to the bed to recharge, which affects the time and quality of their activities. 2. Inability to adjust level, posing a safety risk: The suspension hooks and bases of traditional IV stands are rigidly connected and cannot be independently adjusted for level. When patients move across uneven ground or common hospital ramps and thresholds, the IV stand will tilt, causing the IV bags and pumps suspended from it to tilt as well. This tilting will change the static pressure of the fluid, affecting the accuracy of the infusion, and may even trigger the alarm system of the precision infusion pump, interrupting the treatment. This poses a significant risk to drugs that require precise administration (such as vasoactive drugs). 3. Lack of active braking system and insufficient stability: The base of traditional IV stands is usually equipped with simple casters, but their original design is to facilitate medical staff to push them indoors, rather than to be pushed by weak patients themselves. Most of these casters do not have reliable locking or braking functions. When patients need to rest for a short time, the IV stand is prone to sliding or shifting due to slight incline of the ground or external force. This may not only cause the needle to slip and cause medical accidents, but also bring psychological insecurity to patients, making them hesitant to lean on and push it, thus inhibiting their willingness to get out of bed early. 4. Complex tubing issues: Most traditional IV stand designs do not adequately consider providing convenient organization and fixing solutions for various tubing (IV tubing, monitor cables, etc.), which can easily cause tubing tangling and pulling problems when moving them.

[0004] Therefore, there is an urgent clinical need for a mobile infusion stand designed to facilitate patient mobility and rehabilitation. It should integrate a power supply system, have automatic leveling capabilities, and a reliable parking brake function, aiming to safely and effectively support and promote patients' early ambulation, and truly empower the clinical practice of accelerated rehabilitation surgery. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing infusion poles mentioned in the background art have problems such as no built-in power supply, inability to adjust the horizontal position, lack of active braking and complex pipeline.

[0006] To address the aforementioned technical problems, a rechargeable mobile infusion stand for patient activity rehabilitation training is proposed. This is achieved through the following technical solution: A rechargeable mobile infusion stand for patient activity rehabilitation training includes an infusion rod body, a push rod, a moving base, an automatic braking system, an automatic leveling system, and a battery module. The infusion rod body is mounted on the moving base, which is equipped with multiple lockable casters. The push rod for hand support is mounted on the infusion rod body, and pushing the push rod moves the infusion stand. The automatic braking system is mounted on the moving base and connects the casters and the push rod. The automatic braking system controls the unlocking and locking of the casters based on the pushing and stopping of the push rod. The automatic leveling system is installed on the movable seat. The automatic leveling system automatically adjusts the horizontal angle of the movable seat according to the ground tilt to keep the movable seat in a horizontal state and prevent the infusion stand from tilting to the side. The battery module is detachably mounted on the mobile base. The battery module includes a battery box and a control box, which are detachably connected. The battery box provides power to the entire infusion stand, and the control box records the patient's walking distance. The operation of the system in the infusion stand is controlled by the control box.

[0007] In a preferred embodiment of the present invention, the automatic braking system includes casters, a brake assembly, and a hydraulic assembly. The hydraulic assembly is housed within the movable seat, and the brake assembly is mounted on the casters. The brake assembly is connected to the hydraulic assembly. The movement of the brake assembly is controlled by the hydraulic assembly to achieve synchronous braking and unlocking of multiple casters. The automatic braking system ensures that the infusion stand automatically stops when the patient stops or moves at a speed less than the moving speed of the infusion stand, thereby improving safety.

[0008] In a preferred embodiment of the present invention, the universal wheel includes a wheel body and a mounting base. The wheel body is mounted on the mounting base. The braking assembly includes a brake gear, a brake pawl, a torsion spring, a first return spring, and a hydraulic rod. The brake gear is coaxially connected to the wheel body via the torsion spring. The brake pawl is slidably mounted in the mounting base and is movably engaged with the brake gear. The first return spring is connected to the brake pawl and releases the engagement between the brake pawl and the brake gear. The hydraulic rod is located within the first return spring and connected to the brake pawl. When the hydraulic rod extends, it compresses the brake pawl, causing the brake pawl to engage with the brake gear. The torsion spring ensures that when the automatic braking system brakes the universal wheel, the IV stand can slowly stop under the action of the torsion spring, counteracting inertia and preventing the IV stand from tipping over or overturning due to sudden stopping, thus further improving safety.

[0009] In a preferred embodiment of the present invention, the hydraulic assembly includes a first electric push rod, a push plate, and multiple oil storage chambers. The multiple oil storage chambers are connected to the hydraulic rod via hydraulic pipes. The push plate is connected to the multiple oil storage chambers. The first electric push rod is connected to the push plate. By pressing the push plate with the first electric push rod, the hydraulic oil stored in the multiple oil storage chambers is pushed by the push plate and moves synchronously into the hydraulic rod to lock the casters. The hydraulic assembly facilitates the synchronous driving of multiple casters to brake, ensuring braking effect while improving safety.

[0010] In a preferred embodiment of the present invention, the battery module includes a quick-release component and a limiting component. The quick-release component connects the battery box and the control box, and the limiting component is disposed on the infusion rod body. The limiting component can controllably cooperate with the limiting grooves in the battery box and the control box to restrict the position of the battery box and the control box. The battery module facilitates the supply of power to the micro-pump, monitor or enteral nutrition pump, ensuring the duration and quality of the activity and making it convenient to use.

[0011] In a preferred embodiment of the present invention, the quick-release assembly includes a plug, a slot, and a limiting card. The plug is disposed on the battery box, the slot is disposed inside the control box, and the limiting card is disposed in the slot. The limiting card cooperates with the plug to connect the battery box and the control box. An unlocking button is installed on the limiting card. Pressing the unlocking button can controllably release the cooperation between the limiting card and the plug. The quick-release assembly facilitates the rapid installation and removal of the battery module and is convenient to use.

[0012] In a preferred embodiment of the present invention, the limiting component includes a limiting pressure plate and an adjusting tube. The adjusting tube is disposed on the body of the infusion rod, and the limiting pressure plate is screwed to the adjusting tube. A limiting ring is disposed on the limiting pressure plate. Rotating the limiting pressure plate can adjust the fit between the limiting ring and the limiting groove. The setting of the limiting component facilitates the restriction of the position of the battery module on the body of the infusion rod, thereby improving the stability of the battery module fixed on the infusion stand.

[0013] In a preferred embodiment of the present invention, the push rod includes an outer tube, a mounting ring, an inner rod, and a gas strut. The outer tube is sleeved over the inner rod, the gas strut is positioned between the outer tube and the inner rod, the mounting ring is positioned on the body of the infusion rod, and one end of the inner rod is hinged to the mounting ring. This configuration facilitates adjustment of the height of the push rod as needed, making it suitable for patients of different heights and convenient to use.

[0014] In a preferred embodiment of the present invention, the automatic leveling system includes a leveling bracket, a second electric actuator, a level sensor, and multiple bullseye wheels. The leveling bracket is hinged to a movable base. The second electric actuator is hinged to both the movable base and the leveling bracket to control the expansion and contraction of the leveling bracket. Multiple bullseye wheels are mounted on the leveling bracket. The level sensor is located inside the control box. The expansion and contraction of the leveling bracket are adjusted based on the detection signal from the level sensor. This configuration ensures that the IV stand remains level and moves smoothly even on sloping surfaces, improving safety during use.

[0015] In a preferred embodiment of the present invention, a cable placement tube is provided on the main body of the infusion rod, and a cable release groove is provided on the cable placement tube. The infusion tube and the power supply wire can be detachably placed in the cable release groove. This arrangement facilitates the organization and fixation of the infusion tube and the monitor cable, and avoids problems such as tangling and pulling of the pipeline when moving.

[0016] The beneficial effects of this invention compared to the prior art are: The technical solution of this invention involves installing a height-adjustable push rod on the main body of the infusion pole in the infusion stand, which allows the entire infusion stand to move using the push rod, making it convenient to use. Furthermore, an automatic braking system that can be linked and controlled with the push rod is installed on the base and casters of the infusion stand. When the push rod is pushed, the automatic braking system releases the lock on the casters, allowing the entire infusion stand to move freely. When pushing stops or the push rod is released, the automatic braking system automatically locks the casters, improving safety performance and making operation convenient. The horizontal sensor installed in the control box monitors the horizontal status of the moving base. When encountering a slope, the leveling bracket installed on the moving base can be deployed to make direct contact with the ground, ensuring that the moving base is horizontal and preventing the infusion stand from tilting. By using a battery module that can be detachably installed on the main body of the infusion pole to power the equipment on the infusion stand, the continuous infusion of medication and enteral nutrition solution is ensured during the patient's exercise, thus extending the activity time and improving the quality of the activity; By creating a groove on the surface of the straight tube installed on the main body of the infusion rod, various pipelines can be placed using the groove, thus avoiding the problems of pipelines easily getting tangled and pulled during movement. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a 3D schematic diagram of a push rod; Figure 3 Exploded view of a push rod; Figure 4 This is a 3D schematic diagram of the movable seat; Figure 5 A 3D schematic diagram of the omnidirectional wheel; Figure 6 This is a partial sectional view of the caster wheel; Figure 7 Exploded view of the omnidirectional wheel; Figure 8 This is a three-dimensional schematic diagram of the hydraulic components; Figure 9 This is a 3D schematic diagram of an automatic leveling system; Figure 10 This is a 3D schematic diagram of the battery module; Figure 11 This is a partial cross-sectional view of the battery module; Figure 12 This is an exploded view of the battery module. Figure 13 This is a three-dimensional schematic diagram of the conduit. Figure 14 A diagram showing the usage status of the automatic leveling system; Explanation of reference numerals in the attached drawings: 1-Infusion rod body, 11-Infusion bag hook, 12-Place plate, 13-Adjusting screw, 2-Push rod, 21-Outer tube, 22-Mounting ring, 23-Inner rod, 24-Hinge seat, 25-Hinge platform, 26-Start switch, 27-Handrail, 28-Switch mounting platform, 29-Gas strut, 3-Moving seat, 31-Mounting plate, 32-Outrigger, 33-Brake mounting cavity, 34-Wheel mount plate, 4-Automatic braking system, 41-Wheel, 42-Brake assembly, 43-Hydraulic assembly, 44-Wheel body, 45-Mounting seat, 46-Slide groove, 47-Brake gear, 48-Connecting shaft, 49-Brake claw, 410-Torsion spring, 411-Slider, 412-First return spring, 413- 414-Hydraulic pipe, 415-Oil reservoir, 416-First electric push rod, 417-Push plate, 418-Hydraulic rod, 5-Automatic leveling system, 51-Leveling bracket, 52-Second electric push rod, 53-Bullseye wheel, 6-Battery module, 61-Battery box, 62-Control box, 63-Power indicator light, 64-Display screen, 65-Power socket, 66-Adjustment button, 67-Dustproof box, 68-Limit groove, 7-Quick release assembly, 71-Insertion block, 72-Card slot, 73-Leave opening, 74-Limit card, 75-Second reset spring, 76-Unlock button, 8-Limit assembly, 81-Limit pressure plate, 82-Adjustment pipe, 83-Limit ring, 9-Wire placement pipe, 91-Wire placement groove, 92-Partition groove. Detailed Implementation

[0018] The following will refer to the appendices in the embodiments of the present invention. Figure 1-14 The technical solutions in the embodiments of the present invention will be described in detail below. Example

[0019] like Figure 1 and Figure 14 As shown, a rechargeable mobile infusion stand for patient activity rehabilitation training includes an infusion pole body 1, a push rod 2, a movable base 3, an automatic braking system 4, an automatic leveling system 5, a battery module 6, and a cable management tube 9. The infusion pole body 1 is mounted on the movable base 3, and casters 41 are mounted on the movable base 3. The push rod 2 is mounted on the infusion pole body 1. The automatic braking system 4 is connected to the casters 41. The automatic leveling system 5 is mounted on the movable base 3. The battery module 6 is detachably mounted on the movable base 3 and can power the equipment on the infusion stand. The cable management tube 9 is mounted on the infusion pole body 1, and the infusion tube and monitor cable are stored in the cable management tube 9.

[0020] The main function of the push rod 2 is to make it easy for the patient to hold. The patient can push the infusion stand to move by holding the push rod 2. At the same time, the push rod 2 can also work in conjunction with the automatic braking system 4. When the push rod 2 is released, the automatic braking system 4 can automatically lock the universal wheel 41 to brake the infusion stand.

[0021] The movable seat 3 is equipped with casters 41. The main function of the movable seat 3 is to move the infusion stand.

[0022] The main function of the automatic braking system 4 is to automatically brake the IV stand when the patient releases the control of the push lever 2, preventing the IV stand from moving due to the slope of the ground when the patient is resting, thus improving stability and safety. At the same time, the automatic braking system 4 can automatically release the brake on the IV stand when the patient pushes the push lever 2, making it convenient to use.

[0023] The main function of the automatic leveling system 5 is that when the infusion stand encounters a sloping road surface, the automatic leveling system 5 corresponding to the direction of the sloping direction can be deployed and make contact with the ground to ensure that the moving seat 3 is always in a horizontal state and to prevent the infusion stand from tilting.

[0024] The main function of battery module 6 is to provide power to the micro-pump, enteral nutrition pump or monitor on the infusion stand, so as to ensure the patient's activity time and quality of activity.

[0025] like Figure 1 As shown, the main body 1 of the infusion pole is an existing telescopic infusion pole. One end of the main body 1 of the infusion pole is fixed to the movable base 3 with screws. Multiple infusion bag hooks 11 are integrally fixed to the end of the main body 1 of the infusion pole, and the infusion bags are hung on the infusion bag hooks 11.

[0026] To facilitate the placement of infusion pumps, monitors, or other auxiliary equipment, a shelf 12 is movably installed on the main body 1 of the infusion pole. The shelf 12 is a rectangular plastic plate on which the infusion pump, monitor, or other auxiliary equipment is placed. In order to prevent accidental falls, a baffle is protruding from the surface of the shelf 12 near the edge.

[0027] To facilitate the installation of the placement plate 12 on the infusion rod body 1, a circular collar is integrally fixed on the side of the placement plate 12. The collar can be movably fitted onto the infusion rod body 1. To facilitate the fixation of the position of the placement plate 12, an adjusting screw 13 is screwed onto the collar. The adjusting screw 13 is screwed into the collar. When the adjusting screw 13 is tightened, it can contact the surface of the infusion rod body 1, thereby fixing the position of the placement plate 12. To accommodate more auxiliary equipment, multiple placement plates 12 are installed on the infusion rod body 1. In this embodiment, two are preferred.

[0028] like Figure 1 , 2 As shown in Figure 3, the push rod 2 includes an outer tube 21, a mounting ring 22, an inner rod 23, and a pneumatic strut 29. The outer tube 21 is movably sleeved outside the inner rod 23. One end of the pneumatic strut 29 is connected to the outer tube 21, and the other end is connected to the inner rod 23. The depth of the inner rod 23 inserted into the outer tube 21 can be adjusted by the pneumatic strut 29. The lower end of the inner rod 23 is movably hinged to the mounting ring 22, and the mounting ring 22 is fixed on the infusion rod body 1.

[0029] The inner rod 23 is a plastic tube with a rectangular cross-section. A rectangular boss is integrally fixed on the lower end face of the inner rod 23, which is named the hinge platform 25. The inner rod 23 is connected to the mounting ring 22 through the hinge platform 25. In order to facilitate the fixing of the gas strut 29, a circular groove is opened in the middle of the inner rod 23. One end of the gas strut 29 is embedded in this groove, and the two are fixedly connected.

[0030] The outer tube 21 is a hollow plastic tube with a rectangular cross-section. The outer tube 21 is fitted inside the inner rod 23 and can move relative to the inner rod 23. The other end of the gas strut 29 is inserted into the outer tube 21 and is fixedly connected to the outer tube 21.

[0031] The gas strut 29 is an existing controllable gas spring. The length of the gas strut 29 can be adjusted by using the switch on the gas strut 29, thereby adjusting the height of the push rod 2, which is suitable for patients of different heights. At the same time, the outer tube 21 and the inner rod 23 provide support for the gas strut 29 and prevent the gas strut 29 from bending when the push rod 2 is pushed.

[0032] To facilitate pushing the push rod 2, a handrail 27 is integrally fixed at the end of the outer tube 21 for easy handholding by the patient.

[0033] The outer tube 21 is a ring-shaped plastic tube. The outer tube 21 can be fitted over the outside of the infusion rod body 1 and is used to fix the position of the push rod 2. An adjusting screw 13 is screwed onto the outer tube 21. The adjusting screw 13 is screwed into the outer tube 21. When the adjusting screw 13 is tightened, the adjusting screw 13 can contact the surface of the infusion rod body 1 to fix the position of the push rod 2.

[0034] To facilitate the connection between the inner rod 23 and the outer tube 21, a connecting platform protrudes outward on the side wall of the outer tube 21. A hinge seat 24 is integrally fixed on the connecting platform. The hinge seat 24 can be hinged with the hinge platform 25 on the inner rod 23, and the push rod 2 can rotate at a certain angle along the hinge. In this embodiment, the rotation angle is preferably within 5-10°.

[0035] To facilitate the linkage between the push rod 2 and the automatic braking system 4, an inclined switch mounting platform 28 protrudes outward from the connecting platform near the hinge seat 24. When the push rod 2 is released, it rotates along the hinge under the action of gravity and contacts the switch mounting platform 28. A start switch 26 connected to the automatic braking system 4 is installed on the surface of the switch mounting platform 28 using screws. After the push rod 2 is released, it contacts the start switch 26, realizing the linkage control with the automatic braking system 4.

[0036] like Figure 1 and 4 As shown, the movable seat 3 includes a mounting plate 31 and multiple legs 32. The legs 32 are mounted on the mounting plate 31, and the mounting plate 31 is connected to the infusion rod body 1 by screws.

[0037] Mounting plate 31 is a plastic plate with a circular cross-section. Its main function is to serve as a carrier for mounting the support leg 32, the infusion rod body 1, and the battery module 6.

[0038] The outrigger 32 is made of rigid engineering plastic. The main function of the outrigger 32 is to install the caster wheel 41. In this embodiment, there are preferably five outriggers 32, which are arranged in a ring and integrally formed. In order to facilitate the installation of the hydraulic component 43 in the automatic braking system 4, there is a circular cavity at the intersection of the five outriggers 32. This cavity is named the brake mounting cavity 33. The hydraulic component 43 is installed in this brake mounting cavity 33.

[0039] To facilitate the installation of the caster wheel 41, a rectangular caster wheel mounting plate 34 is fixed to one end of the support leg 32, and the caster wheel 41 is installed on the caster wheel mounting plate 34 with screws.

[0040] like Figure 5 and 7As shown, the automatic braking system 4 includes a caster wheel 41, a brake assembly 42, and a hydraulic assembly 43. The brake assembly 42 is installed inside the caster wheel 41, and the hydraulic assembly 43 is installed inside the brake mounting cavity 33 and connected to the brake assembly 42 and the push rod 2. The brake assembly 42 can control the caster wheel 41 by means of the joint control of the push rod 2 and the hydraulic assembly 43.

[0041] The caster wheel 41 includes a wheel body 44 and a mounting base 45. The main function of the mounting base 45 is to fix the wheel body 44. The wheel body 44 is mounted on the mounting base 45 by means of a connecting shaft 48. The connecting shaft 48 is fixedly connected to the mounting base 45, and the wheel body 44 can rotate freely relative to the mounting base 45 along the connecting shaft 48.

[0042] A certain gap is left between the side wall of the mounting base 45 and the wheel body 44 to facilitate the installation of other accessories.

[0043] To facilitate the installation of the caster wheel 41, a mounting plate with a bearing is welded to the upper end of the mounting base 45. The caster wheel 41 is fixed to the caster wheel mounting plate 34 with screws through the mounting plate, and the mounting base 45 can rotate relative to the mounting plate.

[0044] To improve the anti-slip effect, in this embodiment, the wheel body 44 is preferably made of elastic rubber material and a steel hub.

[0045] like Figure 3 , 4 As shown in Figures 5, 6, and 7, the brake assembly 42 includes a brake gear 47, a brake pawl 49, a torsion spring 410, a hydraulic rod 418, and a first return spring 412. The brake gear 47 is mounted on a connecting shaft 48. The torsion spring 410 connects the wheel body 44 and the brake gear 47. The brake pawl 49 is slidably mounted in the mounting base 45. The brake pawl 49 and the brake gear 47 are detachably engaged. The hydraulic rod 418 connects the brake pawl 49 and the mounting base 45. The first return spring 412 is sleeved on the outside of the hydraulic rod 418.

[0046] The brake gear 47 is a hardened gear, which is fixed to the connecting shaft 48 by a pin. The two will not move relative to each other. A torsion spring 410 is fitted on the connecting shaft 48 between the brake gear 47 and the wheel body 44. One end of the torsion spring 410 is connected to the wheel body 44 and the other end is connected to the brake gear 47. In this way, when braking, the torsion spring 410 can play a role in slow braking and avoid the situation where the IV stand will tip over due to inertia due to sudden braking.

[0047] The brake pawl 49 is a metal pawl with a U-shaped cross-section. Teeth that can engage with the brake gear 47 are provided on the end faces of the two vertical arms of the brake pawl 49. The two sides of the brake pawl 49 are connected to the mounting base 45. The brake pawl 49 can be raised and lowered relative to the mounting base 45 under the action of the hydraulic rod 418 and the first return spring 412, so as to realize the control of engaging with the brake gear 47, thereby realizing the locking and unlocking of the universal wheel 41.

[0048] To facilitate the stable up-and-down sliding of the brake pawl 49 within the mounting base 45, each of the two side walls of the brake pawl 49 has a recessed groove 46 with a rectangular cross-section. At the same time, a rectangular slider 411 protrudes from the inner side of the mounting base 45. The slider 411 can cooperate with the groove 46 to achieve stable up-and-down sliding of the brake pawl 49 within the mounting base 45.

[0049] Hydraulic rod 418 is a conventional hydraulically driven hydraulic cylinder. Hydraulic rod 418 is connected to hydraulic component 43 via hydraulic pipe 414. By injecting hydraulic oil into hydraulic rod 418, the extension of hydraulic rod 418 can be controlled. One end of hydraulic rod 418 is fixedly connected to the upper surface of brake pawl 49, and the other end is connected to the surface of mounting base 45. Hydraulic rod 418 is used to make brake pawl 49 slide down along slide groove 46 and cooperate with brake gear 47 to achieve braking.

[0050] The first return spring 412 is sleeved on the outside of the hydraulic rod 418. One end of the first return spring 412 is fixedly connected to the upper surface of the brake pawl 49, and the other end is fixedly connected to the surface of the mounting base 45. When the hydraulic rod 418 extends, the first return spring 412 is stretched by force. When the supply of hydraulic oil to the hydraulic rod 418 is stopped, the hydraulic rod 418 is reset under the action of the first return spring 412, releasing the engagement between the brake pawl 49 and the brake gear 47.

[0051] like Figure 3 , 4 As shown in Figures 6, 7, and 8, the hydraulic assembly 43 includes a fluid supply rotary joint 413, a hydraulic pipe 414, an oil reservoir 415, a first electric actuator 416, and a push plate 417.

[0052] The fluid supply rotary joint 413 is an existing joint that can stably deliver fluid during rotation. The fluid supply rotary joint 413 is installed at the mounting plate of the universal wheel 41 to realize the connection between the hydraulic rod 418 and the oil storage chamber 415. This ensures the normal flow of hydraulic oil during the rotation of the universal wheel 41 and facilitates locking of the universal wheel 41.

[0053] The oil reservoir 415 is a circular chamber made of metal with one end open. Hydraulic oil is stored in the oil reservoir 415. The oil reservoir 415 is connected to the hydraulic rod 418 via hydraulic pipe 414. There are 5 oil reservoirs 415. Each oil reservoir 415 is connected to the hydraulic rod 418 in a universal wheel 41. The oil reservoir 415 is installed in the brake mounting cavity 33. The installation method can be the existing common method, as long as it is fixed and stable.

[0054] The push plate 417 is a circular metal plate, and five circular piston heads are fixed on the surface of the push plate 417. The piston heads are inserted into the oil storage chamber 415. One end of the first electric push rod 416 is fixed to the surface of the push plate 417 with screws, and the other end is fixed to the surface of the brake mounting chamber 33. The control line in the first electric push rod 416 passes through the infusion rod body 1 and is connected to the start switch 26 on the hand push rod 2. When the start switch 26 is turned on, the first electric push rod 416 is activated. The first electric push rod 416 pushes the push plate 417 to move and transports the hydraulic oil in the oil storage chamber 415 to the hydraulic rod 418 through the hydraulic pipe 414, thereby locking the universal wheel 41.

[0055] The first electric actuator 416 is an existing type of actuator that is long when powered on and can be pressed back when powered off. This makes it easy for the first electric actuator 416 to be pushed back to its original position when the hydraulic oil returns to the oil reservoir 415 and the push plate 417 moves in the opposite direction.

[0056] like Figure 1 , 4 As shown in Figures 9 and 14, the automatic leveling system 5 includes a leveling bracket 21, a second electric actuator 52, a bullseye wheel 53, and a level sensor.

[0057] The leveling bracket 21 is a triangular metal frame with a hinge platform protruding outward. The leveling bracket 21 is hinged to the lower surface of the mounting plate 31. Five leveling brackets 21 are hinged to the mounting plate 31, and each leveling bracket 21 is located in the gap between two adjacent legs 32.

[0058] To facilitate the rotation of the leveling bracket 21 along the hinge and achieve the horizontal adjustment of the movable seat 3, a crossbeam is fixed in the middle of the leveling bracket 21, and an electric push rod is hinged to the crossbeam. This electric push rod is named the second electric push rod 52. One end of the second electric push rod 52 is hinged to the crossbeam, and the other end is hinged to the lower surface of the mounting plate 31.

[0059] The level sensor is an existing device mainly used to detect whether an object is in a horizontal state. The level sensor is installed in the control box 62 in the battery module 6. The second electric push rod 52 is connected to the level sensor. When the level sensor detects a tilt in a certain direction, the level sensor controls the second electric push rod 52 at the corresponding position to extend, driving the leveling bracket 21 to rotate and unfold along the hinge, contacting the ground, and ensuring that the moving seat 3 is in a horizontal state.

[0060] In order to ensure that the IV stand can still rotate normally after the leveling bracket 21 is unfolded, bullseye wheels 53 are installed on the frames distributed opposite each other at the hinge of the leveling bracket 21. The bullseye wheels 53 are existing universal rotatable wheels. After the leveling bracket 21 is unfolded, the bullseye wheels 53 contact the ground to ensure that the IV stand can move normally.

[0061] like Figure 1 , 10 As shown in Figures 11 and 12, the battery module 6 includes a battery box 61, a control box 62, a quick-release assembly 7, and a limiting assembly 8. The battery box 61 contains a rechargeable battery, and the control box 62 contains a control board and some functional sensors. The battery box 61 and the control box 62 are quickly disassembled and assembled using the quick-release assembly 7. The limiting assembly 8 is installed on the infusion rod body 1 and can cooperate with the battery module 6 to stably fix the battery module 6 on the movable base 3.

[0062] The battery box 61 is a semi-circular hollow plastic box. A rechargeable battery and a matching charging accessory for charging the existing battery are installed inside the battery box 61. In order to make it easy to know the battery power, a power indicator light 63 is installed on the battery box 61 to make it easy to know the remaining power of the battery inside the battery box 61.

[0063] To facilitate power supply to the equipment on the IV stand, a power socket 65 is installed on the battery box 61. The power socket 65 can be used to supply power to the equipment. In order to protect the power socket 65 from dust or liquid dripping into it, a plastic dust cover 67 is also hinged to the power socket 65. The dust cover 67 can cover the outside of the power socket 65 for protection.

[0064] The control box 62 is the same as the battery box 61, both being semi-circular hollow plastic boxes. When the control box 62 and the battery box 61 are closed, they can form a complete circle. In order to facilitate the clearance between the control box 62 and the battery box 61, a clearance hole is provided at the center of the circle. After the control box 62 and the battery box 61 are closed to form a complete circle, the infusion rod body 1 can pass through the clearance hole.

[0065] Different patients require different activity plans. Some patients need to walk a longer distance, while others need to walk a shorter distance. To facilitate reminding patients, this embodiment has a display screen 66 embedded in the control box 62. The control box 62 is also equipped with an adjustment button 66, an audio-visual reminder, and a step sensor. The step sensor can monitor the number of steps and distance the patient walks. The adjustment button 66 and the display screen 66 can be used to preset the exercise distance for the patient. When the patient's exercise reaches half of the preset value, the audio-visual reminder will remind the patient that half of the exercise has been completed, making it convenient for the patient to plan the subsequent return route.

[0066] The display screen 66, the sound and light reminder, and the step sensor are existing devices that can be used directly.

[0067] A control board is also installed inside the control box 62. The control board mainly controls the coordination of the entire device, and the automatic braking system 4 and the automatic leveling system 5 are both connected to the control board.

[0068] The quick-release assembly 7 includes an insert block 71, a slot 72, and a limiting card 74. The insert block 71 is a plastic block with a rectangular cross-section. The insert block 71 is integrally fixed to the two rectangular end faces of the battery box 61. A rectangular limiting opening is provided on the lower surface of the insert block 71, and the limiting card 74 can be inserted into the limiting opening.

[0069] The card slot 72 is formed on the two rectangular end faces of the control box 62, corresponding to the position of the insert block 71. A rectangular mounting groove is formed on the lower surface of the card slot 72, and the limit card 74 is located in this mounting groove. A second return spring 75 is fixed on the limit card 74. One end of the second return spring 75 is fixedly connected to the mounting groove, and the other end is fixedly connected to the limit card 74. The limit card 74 can extend out of the mounting groove under the action of the second return spring 75, and can also retract back into the mounting groove after being subjected to force.

[0070] To facilitate the cooperation between the insert block 71 and the limiting card 74, the end face of the insert block 71 is designed to be inclined, and the cross-section of the limiting card 74 is triangular. In this way, after the insert block 71 is inserted into the card slot 72, the insert block 71 can squeeze the limiting card 74, making it easier for the insert block 71 to be inserted into the card slot 72.

[0071] To facilitate the release of the engagement between the insert 71 and the limit card 74, a circular unlock button 76 is screwed onto the limit card 74. Pressing the unlock button 76 will cause the limit card 74 to move down, releasing the engagement between the insert 71 and the limit card 74. To avoid positional interference, a clearance slot 73 is provided on the insert 71 to allow the unlock button 76 to move.

[0072] Regarding the electrical connection between the control box 62 and the battery box 61, power supply contacts (existing devices, not shown in the figure) are installed on the rectangular end faces of the control box 62 and the battery box 61. After the control box 62 and the battery box 61 are connected by the quick-release assembly 7, the battery box 61 supplies power to the control box 62 through the power supply contacts.

[0073] The limiting assembly 8 includes a limiting pressure plate 81, an adjusting tube 82, and a limiting ring 83. The limiting pressure plate 81 is a circular plastic ring. The inner diameter of the limiting pressure plate 81 is slightly larger than the outer diameter of the infusion rod body 1. The limiting pressure plate 81 can be fitted onto the infusion rod body 1. A circular tube is integrally fixed on the upper end face of the limiting pressure plate 81, and an internal thread is provided inside the circular tube.

[0074] The regulating tube 82 is a circular plastic tube. The regulating tube 82 is sleeved on the outside of the infusion rod body 1 and fixedly connected to the infusion rod body 1 with glue. An external thread is provided on the outside of the regulating tube 82 to cooperate with the internal thread on the circular tube in the limiting pressure plate 81.

[0075] The limiting ring 83 is a circular ring that protrudes from the outer surface of the limiting pressure plate 81. At the same time, a circular groove is formed on the upper surface of the control box 62 and the battery box 61, which is named the limiting groove 68. When the limiting pressure plate 81 is rotated, the limiting ring 83 on the limiting pressure plate 81 can be locked in the limiting groove 68 to restrict the position of the battery module 6, prevent the battery module 6 from shifting, and improve stability.

[0076] like Figure 1 and 13 As shown, in order to avoid the wires of the electrical equipment and the infusion tubes on the infusion stand getting tangled and pulled, a wire placement tube 9 is fitted under the body 1 of the infusion rod. The wire placement tube 9 is made of rubber and can be stably fitted on the outside of the body 1 of the infusion rod.

[0077] To facilitate the storage of wires and infusion tubes, multiple wire release grooves 91 are provided on the surface of the wire release tube 9 along the length of the wire release tube 9. The wire release grooves 91 are semi-circular grooves that penetrate the wire release tube 9 and contact the outside. Wires and infusion tubes can be stuck in the wire release grooves 91.

[0078] To accommodate wires and infusion tubes of different diameters, the diameter of the cable tray 91 varies.

[0079] Multiple arc-shaped partition grooves 92 are radially provided on the surface of the wire placement tube 9. The wire placement grooves 92 are used to divide the wire placement groove 91 into sections, which makes it convenient for the wire or infusion tube to be placed in different sections or to extend from different sections, making it easy to use.

[0080] The usage process of this embodiment is as follows: When in use, the power supply socket 65 on the battery module 6 is used to supply power to the electrical equipment on the infusion stand. When the patient needs to walk, the walking distance is preset on the control box 62. Then the patient holds the handrail 27. At this time, the push rod 2 rotates along the hinge to release the pressure on the start switch 26. At this time, the first return spring 412 is reset, and the hydraulic oil in the hydraulic rod 418 is squeezed back into the oil storage chamber 415 along the hydraulic pipe 414. At the same time, the brake pawl 49 is released from the engagement with the brake gear 47 under the action of the first return spring 412, and the universal wheel 41 is unlocked. At this time, the infusion stand can be pushed. When the push rod 2 is stopped and released, the push rod 2 rotates along the hinge under the action of gravity. At this time, the push rod 2 presses the start switch 26, and the start switch 26 controls the first electric push rod 416 to start, which transports the hydraulic oil in the oil storage chamber 415 to the hydraulic rod 418 through the hydraulic pipe 414. At this time, the hydraulic rod 418 extends, pushes the brake pawl 49 to move down and engage with the brake gear 47, and under the action of the torsion spring 410, slowly and steadily stops the movement of the infusion stand. When encountering a gentle slope, the level sensor detects that the moving seat 3 is tilted in a certain direction. At this time, the second electric push rod 52 in this direction pushes the corresponding leveling bracket 51 to unfold. The bullseye wheel 53 on the leveling bracket 51 then contacts the ground until the level sensor detects that the moving seat 3 is in a horizontal state, thus completing the automatic leveling and preventing the IV stand from tipping over.

[0081] The above embodiments are merely illustrative of the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solutions based on the technical concept proposed in this invention shall fall within the scope of protection of this invention.

Claims

1. A rechargeable mobile infusion stand for patient activity rehabilitation training, characterized in that: The device includes an infusion pole body (1), a push rod (2), a moving seat (3), an automatic braking system (4), an automatic leveling system (5), and a battery module (6). The infusion pole body (1) is mounted on the moving seat (3), which is equipped with multiple lockable casters (41). The push rod (2) for hand support is mounted on the infusion pole body (1). Pushing the push rod (2) moves the infusion stand. The automatic braking system (4) is mounted on the moving seat (3) and connects the casters (41) and the push rod (2). The automatic braking system (4) controls the unlocking and locking of the casters (41) according to the pushing and stopping of the push rod (2). The automatic leveling system (5) is installed on the movable seat (3). The automatic leveling system (5) automatically adjusts the horizontal angle of the movable seat (3) according to the ground tilt, keeps the movable seat (3) in a horizontal state, and prevents the infusion stand from tilting to the side. The battery module (6) is detachably mounted on the mobile base (3). The battery module (6) includes a battery box (61) and a control box (62). The battery box (61) and the control box (62) are detachably connected. The battery box (61) provides power to the entire infusion stand. The control box (62) records the patient's walking distance, and the operation of the system in the infusion stand is controlled by the control box (62).

2. The rechargeable mobile infusion stand for patient activity rehabilitation training according to claim 1, characterized in that: The automatic braking system (4) includes casters (41), brake assembly (42) and hydraulic assembly (43). The hydraulic assembly (43) is located inside the movable seat (3), and the brake assembly (42) is located on the casters (41). The brake assembly (42) is connected to the hydraulic assembly (43). The hydraulic assembly (43) controls the movement of the brake assembly (42) to achieve synchronous braking and unlocking of multiple casters (41).

3. The rechargeable mobile infusion stand for patient activity rehabilitation training according to claim 2, characterized in that: The caster wheel (41) includes a wheel body (44) and a mounting base (45). The wheel body (44) is mounted on the mounting base (45). The brake assembly (42) includes a brake gear (47), a brake pawl (49), a torsion spring (410), a first return spring (412), and a hydraulic rod (418). The brake gear (47) is coaxially connected to the wheel body (44) through the torsion spring (410). The brake pawl (49) is slidably mounted in the mounting base (45). The brake pawl (49) is in movable engagement with the brake gear (47). The first return spring (412) is connected to the brake pawl (49). The first return spring (412) releases the engagement between the brake pawl (49) and the brake gear (47). The hydraulic rod (418) is located in the first return spring (412) and connected to the brake pawl (49). When the hydraulic rod (418) extends, it squeezes the brake pawl (49), causing the brake pawl (49) to engage with the brake gear (47).

4. The rechargeable mobile infusion stand for patient activity rehabilitation training according to claim 2, characterized in that: The hydraulic assembly (43) includes a first electric push rod (416), a push plate (417), and multiple oil storage chambers (415). The multiple oil storage chambers (415) are connected to the hydraulic rod (418) through hydraulic pipes (414). The push plate (417) is connected to the multiple oil storage chambers (415). The first electric push rod (416) is connected to the push plate (417). By pressing the push plate (417) with the first electric push rod (416), the hydraulic oil stored in the multiple oil storage chambers (415) is pushed by the push plate (417) and moves synchronously into the hydraulic rod (418) to lock the caster wheel (41).

5. The rechargeable mobile infusion stand for patient activity rehabilitation training according to claim 1, characterized in that: The battery module (6) includes a quick-release assembly (7) and a limiting assembly (8). The quick-release assembly (7) connects the battery box (61) and the control box (62). The limiting assembly (8) is set on the body of the infusion rod (1). The limiting assembly (8) can controllably cooperate with the limiting groove (68) in the battery box (61) and the control box (62) to limit the position of the battery box (61) and the control box (62).

6. The rechargeable mobile infusion stand for patient activity rehabilitation training according to claim 5, characterized in that: The quick-release assembly (7) includes a plug (71), a slot (72), and a limit card (74). The plug (71) is located on the battery box (61), the slot (72) is located inside the control box (62), and the limit card (74) is located in the slot (72). The limit card (74) and the plug (71) work together to connect the battery box (61) and the control box (62). An unlock button (76) is installed on the limit card (74). Pressing the unlock button (76) can controllably release the connection between the limit card (74) and the plug (71).

7. The rechargeable mobile infusion stand for patient activity rehabilitation training according to claim 5, characterized in that: The limiting assembly (8) includes a limiting pressure plate (81) and an adjusting tube (82). The adjusting tube (82) is set on the body of the infusion rod (1). The limiting pressure plate (81) is screwed to the adjusting tube (82). A limiting ring (83) is set on the limiting pressure plate (81). Rotating the limiting pressure plate (81) can realize the adjustment of the limiting ring (83) and the limiting groove (68).

8. The rechargeable mobile infusion stand for patient activity rehabilitation training according to claim 1, characterized in that: The push rod (2) includes an outer tube (21), a mounting ring (22), an inner rod (23), and a gas strut (29). The outer tube (21) is sleeved over the inner rod (23), the gas strut (29) is located between the outer tube (21) and the inner rod (23), the mounting ring (22) is located on the body of the infusion rod (1), and one end of the inner rod (23) is hinged to the mounting ring (22).

9. The rechargeable mobile infusion stand for patient activity rehabilitation training according to claim 1, characterized in that: The automatic leveling system (5) includes a leveling bracket (51), a second electric actuator (52), a level sensor, and multiple bullseye wheels (53). The leveling bracket (51) is hinged to the moving base (3). The second electric actuator (52) is hinged to the moving base (3) and the leveling bracket (51) respectively to control the expansion and contraction of the leveling bracket (51). Multiple bullseye wheels (53) are set on the leveling bracket (51). The level sensor is set in the control box (62). The expansion and contraction of the leveling bracket (51) are adjusted by the detection signal of the level sensor.

10. The rechargeable mobile infusion stand for patient activity rehabilitation training according to claim 1, characterized in that: A wire placement tube (9) is provided on the main body (1) of the infusion rod. A wire release groove (91) is provided on the wire placement tube (9). The infusion tube and the wire for power supply can be detachably placed in the wire release groove (91).

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