Automatic flushing device for hemoperfusion device

Abstract

The invention discloses an automatic flushing device for a hemoperfusion device, and relates to the technical field of medical instruments. Comprising a base and a flushing structure, a vertical frame is arranged at the top of the base, and a flushing fluid box is arranged on one side of the vertical frame; the vertical frame is further provided with a lifting structure and a lifting table, and the lifting table is installed on the lifting structure. A back plate is arranged at the top of the lifting table; the flushing structure is mounted on the side surface of the back plate; a pump machine is arranged in the flushing fluid tank, a fixing pipe is arranged at the output end of the pump machine, penetrates through the top of the flushing fluid tank and is provided with a connecting port, the connecting port is provided with a flushing fluid feeding pipe, and the other end of the flushing fluid feeding pipe is connected with the flushing structure; the top of the base is further provided with a waste water barrel, and the flushing structure is further provided with a waste liquid collecting pipe. The device is compact and reasonable in overall structure and easy to operate and understand, the workload of medical staff can be remarkably relieved, the medical resource utilization efficiency is improved, and the device has important clinical application value and popularization prospects.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to an automatic flushing device for a blood perfusion apparatus. Background Technology

[0002] Hemoperfusion, as an important blood purification treatment method, plays a crucial role in clinical medicine. Its therapeutic principle is based on physical adsorption. The patient's blood is drawn out of the body and flows through a perfusion device containing a solid adsorbent, such as activated carbon or a specific resin. The adsorbent, with its porous structure and surface properties, effectively adsorbs exogenous drugs, toxins, as well as endogenous toxins, metabolic products, and other harmful substances from the blood. The purified blood is then returned to the patient's body, thereby achieving the goal of treating the disease.

[0003] Traditional blood perfusion device flushing involves numerous insurmountable problems due to manual operation. First, manual flushing is extremely inefficient. Medical staff must manually connect tubing, adjust flow rates, and monitor the flushing process—a series of tedious steps, each requiring significant time and effort. For example, a single routine blood perfusion device flushing session can take anywhere from 30 minutes to an hour manually. This severely impacts treatment efficiency and prolongs patient waiting times, especially when medical resources are limited and patients are waiting for treatment. Second, the accuracy of manual flushing is difficult to guarantee. Manual operation is influenced by factors such as personal experience, operating habits, and the patient's mental state, leading to significant deviations in controlling key parameters such as flushing flow rate, flushing time, and flushing fluid volume. For instance, an unstable flushing flow rate may result in insufficient flushing of certain areas within the perfusion device, affecting the cleaning effect; excessively long or short flushing times may lead to resource waste or incomplete cleaning, respectively. These deviations result in inconsistent flushing effects, failing to ensure optimal cleaning and disinfection standards with each flush, thus increasing the risk of infection and treatment failure for patients during blood perfusion therapy. Furthermore, manual flushing also incurs high labor costs. Each flushing of the hemoperfusion device requires specialized medical personnel, meaning hospitals need to invest significant human resources to complete this task. With limited staff, manually flushing the hemoperfusion device consumes a considerable amount of their time and energy, preventing them from focusing their attention on patient diagnosis and treatment, indirectly impacting the quality and efficiency of medical services.

[0004] While existing semi-automatic or simple automatic irrigation devices have reduced the workload of medical staff to some extent, they still have many shortcomings. These devices are often single-function, only capable of simple irrigation fluid delivery, and cannot comprehensively monitor and precisely control the irrigation process, such as the ability to monitor parameters like flow rate, pressure, and temperature of the irrigation fluid in real time. Moreover, these devices have poor adaptability and are difficult to be compatible with different models and specifications of hemoperfusion devices, limiting their application scope.

[0005] Therefore, developing an automated flushing device that can achieve efficient, precise, and automated flushing and is adaptable to various types of hemoperfusion devices has significant practical implications and clinical application value. Summary of the Invention

[0006] The purpose of this invention is to provide an automatic flushing device for blood perfusion devices, which solves the problem of low efficiency when using traditional manual flushing and existing equipment for flushing. It is an automatic flushing device that can achieve efficient, accurate and automated flushing and can be adapted to various models of blood perfusion devices.

[0007] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an automatic flushing device for a blood perfusion apparatus, comprising a base and a flushing structure, wherein a support frame is provided on the top of the base, and a flushing fluid tank is provided on one side of the support frame; the support frame is also provided with a lifting structure and a lifting platform, the lifting platform being installed on the lifting structure; a back plate is provided on the top of the lifting platform, and the flushing structure is installed on the side of the back plate; a pump is provided inside the flushing fluid tank, the output end of the pump is provided with a fixed pipe, the fixed pipe passing through the top of the flushing fluid tank and having a connection port, the connection port having a flushing delivery pipe, the other end of the flushing delivery pipe being connected to the flushing structure; a wastewater tank is also provided on the top of the base, and a waste liquid collection pipe is also provided in the flushing structure, the other end of the waste liquid collection pipe being detachably connected to the wastewater tank and communicating with the inside of the wastewater tank.

[0008] The invention is further configured such that: the support frame is symmetrically provided with lifting grooves on the side away from the flushing liquid tank; the interior of the support frame is provided with an inner cavity above the lifting grooves; a vertically arranged rotatable threaded rotating column is provided in the lifting groove, the top of the threaded rotating column penetrates the groove wall and is located in the inner cavity and is provided with a gear one; a rotating rod is provided in the inner cavity, the rotating rod is provided with a gear two and the gear two meshes with the gear one; one end of the rotating rod penetrates the back of the support frame and is provided with a motor; the lifting platform is installed on the opposite threaded rotating column and is threadedly connected to the threaded rotating column.

[0009] The present invention is further configured such that: the flushing structure includes a first flushing circuit and a first fixing structure; the first flushing circuit includes a flushing pipe, a flushing tube, a waste liquid return pipe, and a waste liquid outflow pipe; one end of the flushing pipe is connected to the end of the flushing delivery pipe, and the other end is detachably connected to the flushing tube; one end of the waste liquid return pipe is connected to the waste liquid collection pipe, and the other end is detachably connected to the waste liquid outflow pipe; the flushing tube and the waste liquid outflow pipe are detachably connected to the blood perfusion device.

[0010] The present invention is further configured such that: the back plate is provided with a plurality of card holders, and the waste liquid return pipe and the flushing pipe are respectively carded and fixed on the card holders; the waste liquid return pipe is provided with a pipeline solenoid valve one and a pressure flow sensor one, and the flushing pipe is provided with a pipeline solenoid valve two and a pressure flow sensor two.

[0011] The present invention is further configured such that: the first fixing structure includes a fixing ring frame, the side of the fixing ring frame is provided with a support plate and fixedly connected to the back plate; the fixing slide is provided with a through rotating screw opposite the support plate, one end of the rotating screw located in the fixing slide is provided with a limiting block, and the other end is provided with a rotating handle.

[0012] The present invention is further configured such that: the fixed slide has through slides on both sides of the limiting block, and the limiting block has balance rods on both sides, and the balance rods are slidably connected within the slides.

[0013] The present invention is further configured such that: the flushing structure further includes a second flushing circuit and a second fixing structure symmetrically arranged with the first flushing circuit and the first fixing structure; the end of the flushing liquid delivery pipe is provided with a second tee, and the other two ends of the second tee are respectively connected to the flushing pipes of the first flushing circuit and the second flushing circuit; the end of the waste liquid collection pipe is provided with a first tee, and the other two ends of the first tee are respectively connected to the waste liquid return pipes of the first flushing circuit and the second flushing circuit.

[0014] The invention is further configured such that: the inner side of the fixing ring frame and the surface of the limiting block are both provided with protective pads; the flushing structure requires the selection of flushing pipes and waste liquid outflow pipes with appropriate diameters according to the model of the blood perfusion device.

[0015] The invention is further configured such that: the support frame is also provided with a control device panel, the control device panel is provided with an integrated circuit board with a microporous chip, a display screen and several multi-function buttons; the top of the lifting platform is provided with a placement slot, in which a water collection box is placed; the flushing liquid delivery pipe passes through the back plate and has a through hole at the through point; the back of the back plate is provided with a vertically arranged limiting slide rod, the support frame is provided with a limiting hole plate near the top, and the limiting slide rod passes through the limiting hole plate; the bottom of the base is provided with locking casters.

[0016] The invention is further configured such that: the top of the flushing fluid tank is provided with a fixed cover plate first fixedly connected to the flushing fluid tank, and the side of the fixed cover plate first is provided with a hinged movable cover plate first; the side of the flushing fluid tank is provided with a drain outlet, and a piston or valve is provided at the drain outlet; the top of the base is provided with a barrier for placing a wastewater bucket, the top of the wastewater bucket is provided with a fixed cover plate second fixedly connected to the wastewater bucket, and the side of the fixed cover plate second is provided with a hinged movable cover plate second.

[0017] In summary, this invention offers the following advantages: The integrated design automates the entire process of rinsing the hemoperfusion device, solving the problems of low efficiency, inaccurate parameter control, and high labor costs associated with traditional manual rinsing. It also overcomes the limitations of existing equipment, such as limited functionality and poor adaptability. The dual-rinse circuit design allows for simultaneous processing of two hemoperfusion devices, significantly improving rinsing efficiency. The adjustable fixing structure, compatible with tubing of different diameters, ensures compatibility with various hemoperfusion device models, expanding its application range. The pressure and flow sensors, linked to the integrated circuit board, enable precise control and real-time monitoring of rinsing parameters, ensuring stable and reliable rinsing results and reducing treatment risks. The device is equipped with a lifting structure and locking casters, enhancing operational convenience and mobility. The centralized waste collection, protective pads, and water collection box design ensure safety and hygiene during use. The overall structure is compact and reasonable, and the operation is simple and easy to understand, significantly reducing the workload of medical staff and improving the efficiency of medical resource utilization. It possesses significant clinical application value and promising prospects for widespread adoption. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the automatic flushing device for the blood perfusion apparatus in an embodiment of the present invention;

[0019] Figure 2 This is a front view of the automatic flushing device for the blood perfusion apparatus in an embodiment of the present invention;

[0020] Figure 3 This is a rear view of the automatic flushing device for the blood perfusion apparatus in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the lifting structure in an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the flushing structure in an embodiment of the present invention;

[0023] Figure 6 This is a rear view of the back panel in an embodiment of the present invention.

[0024] In the diagram: 1. Base; 2. Stand; 3. Flushing liquid tank; 4. Enclosure; 5. Wastewater tank; 6. Lifting platform; 7. Back plate; 8. Motor; 9. Waste liquid collection pipe; 10. Control panel; 11. Locking casters; 12. Flushing liquid delivery pipe; 13. Limiting plate; 14. Water collection box; 15. Lifting groove; 16. Threaded rotating column; 17. Placement groove; 18. Support plate; 19. Fixing ring frame; 20. Limiting block; 21. Rotating screw; 22. Rotating handle; 23. Slide rail ; 24. Balance support rod; 25. T-fitting 1; 26. Card holder; 27. Waste liquid return pipe; 28. Pipeline solenoid valve 1; 29. ​​Pressure and flow sensor 1; 30. Waste liquid outlet pipe; 31. Flushing pipe; 32. Pressure and flow sensor 2; 33. Pipeline solenoid valve 2; 34. Flushing pipe; 35. Limiting slide bar; 36. Perforation; 301. Movable cover plate 1; 302. Drain outlet; 303. Fixed cover plate 1; 501. Fixed cover plate 2; 502. Movable cover plate 2. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-6 The present invention will be described in further detail below.

[0026] Example: An automatic flushing device for a blood perfusion apparatus, such as Figures 1-6 As shown, the system includes a base 1 and a flushing structure. The base 1 has a support frame 2 on its top, and a flushing liquid tank 3 on one side of the support frame 2. The support frame 2 also has a lifting structure and a lifting platform 6, which is installed on the lifting structure. The top of the lifting platform 6 has a back plate 7, and the flushing structure is installed on the side of the back plate 7. The flushing liquid tank 3 has a pump inside, and the output end of the pump has a fixed pipe that passes through the top of the flushing liquid tank 3 and has a connection port. The connection port has a flushing liquid delivery pipe 12, and the other end of the flushing liquid delivery pipe 12 is connected to the flushing structure. The top of the base 1 also has a wastewater tank 5, and the flushing structure also has a waste liquid collection pipe 9. The other end of the waste liquid collection pipe 9 is detachably connected to the wastewater tank 5 and communicates with the inside of the wastewater tank 5.

[0027] By adopting the above technical solution, the base 1 provides stable support for the overall device, and the upright 2 integrates the flushing liquid tank 3, lifting structure, and other components, improving the overall integrity of the device. The flushing liquid tank 3 has a built-in pump that can automatically deliver the flushing liquid to the flushing structure through the flushing liquid delivery pipe 12, eliminating the need for manual delivery and significantly improving flushing efficiency. The lifting structure can move the flushing structure on the lifting platform 6 and the back plate 7 up and down to adapt to different operating height requirements and enhance operational convenience. The waste liquid collection pipe 9 works in conjunction with the wastewater tank 5 to achieve centralized collection of flushing waste liquid, preventing waste liquid leakage and environmental pollution. Furthermore, the detachable design of the wastewater tank 5 facilitates subsequent waste liquid treatment and equipment cleaning. The overall structure achieves automated connection of the flushing process, solving the core problem of low efficiency in traditional manual flushing.

[0028] The invention is further configured such that: the support frame 2 is symmetrically provided with lifting grooves 15 on the side away from the flushing liquid tank 3, and the interior of the support frame 2 is provided with an inner cavity above the lifting grooves 15; a vertically arranged rotatable threaded rotating column 16 is provided in the lifting groove 15, the top of the threaded rotating column 16 penetrates the groove wall and is located in the inner cavity and is provided with a gear 1; a rotating rod is provided in the inner cavity, and a gear 2 is provided on the rotating rod and the gear 2 meshes with the gear 1; one end of the rotating rod penetrates the back of the support frame 2 and is provided with a motor 8; the lifting platform 6 is installed on the opposite threaded rotating column 16 and is threadedly connected to the threaded rotating column 16.

[0029] By adopting the above technical solution, motor 8 drives the rotating rod to rotate, and gear two meshes with gear one to drive the threaded rotating columns 16 on both sides to rotate synchronously. The threaded transmission principle is used to achieve smooth lifting and lowering of the lifting platform 6. The symmetrically arranged lifting grooves 15 and threaded rotating columns 16 ensure that the lifting platform 6 is subjected to balanced force and avoids tilting or deviation during lifting and lowering. The gear transmission structure has high transmission efficiency and strong stability, and can accurately control the lifting height of the lifting platform 6, thereby controlling the height of the rinsing structure to meet the height requirements of operators of different heights or different installation scenarios, further improving the operational adaptability of the device.

[0030] The present invention is further configured such that: the flushing structure includes a first flushing circuit and a first fixing structure; the first flushing circuit includes a flushing pipe 31, a flushing tube 34, a waste liquid return pipe 27, and a waste liquid outflow pipe 30; one end of the flushing pipe 31 is connected to the end of the flushing delivery pipe 12, and the other end is detachably connected to the flushing tube 34; one end of the waste liquid return pipe 27 is connected to the waste liquid collection pipe 9, and the other end is detachably connected to the waste liquid outflow pipe 30; the flushing tube 34 and the waste liquid outflow pipe 30 are detachably connected to the blood perfusion device.

[0031] By adopting the above technical solution, the first flushing circuit forms a complete "fluid delivery-flushing-waste fluid return" channel. The flushing fluid enters the blood perfusion device through flushing pipe 31 and flushing pipe 34. After flushing, it flows through waste fluid outlet pipe 30 and waste fluid return pipe 27 into waste fluid collection pipe 9, and finally flows into wastewater tank 5, realizing an automated closed loop of the flushing process. Each pipeline adopts a detachable connection design, which facilitates quick assembly, disassembly, and replacement. This not only reduces the difficulty of operation but also allows for flexible adaptation to different models of blood perfusion devices, solving the problem of poor adaptability of existing equipment.

[0032] The present invention is further configured such that: a plurality of card holders 26 are provided on the back plate 7, and the waste liquid return pipe 27 and the flushing pipe 31 are respectively carded and fixed on the card holders 26; the waste liquid return pipe 27 is provided with a pipeline solenoid valve 28 and a pressure flow sensor 29, and the flushing pipe 31 is provided with a pipeline solenoid valve 33 and a pressure flow sensor 32.

[0033] By adopting the above technical solution, the mounting bracket 26 serves to fix and limit the waste liquid return pipe 27 and the flushing pipe 31, ensuring smooth liquid flow and improving the overall cleanliness of the device. The pipeline solenoid valve 28 and pipeline solenoid valve 33 can precisely control the on / off state of their respective pipelines, achieving automated start and stop of the flushing process. Simultaneously, the opening degree of pipeline solenoid valves 28 and 33 can be adjusted as needed to control the flow rate of flushing fluid and waste liquid, thereby controlling the flushing pressure, flow rate, and flushing speed. Pressure and flow sensors 29 and 32 monitor the pressure and flow parameters in real time during waste liquid return and flushing fluid delivery, providing data support for precise control of the flushing process, avoiding insufficient flushing or damage to the flushing device due to abnormal flow rate or pressure, and solving the problem of inaccurate parameter control in traditional manual flushing.

[0034] The present invention is further configured such that: the first fixing structure includes a fixing ring frame 19, the side of the fixing ring frame 19 is provided with a support plate 18 and fixedly connected to the back plate 7; the fixing slide is provided with a through rotating screw 21 opposite to the support plate 18, one end of the rotating screw 21 located in the fixing slide is provided with a limiting block 20, and the other end is provided with a handle 22.

[0035] By adopting the above technical solution, the fixing ring 19 and the limiting block 20 cooperate to form a clamping space. Rotating the handle 22 can drive the rotating screw 21 to move the limiting block 20 back and forth, thereby clamping and fixing blood perfusion devices of different sizes. This ensures the stability of the perfusion device position during flushing and avoids tubing detachment or incomplete flushing due to shaking. The support plate 18 provides a stable connection between the fixing ring 19 and the back plate 7, improving the load-bearing capacity of the fixing structure. The overall design is simple to operate, highly adaptable, and can meet the fixing needs of various models of perfusion devices.

[0036] The present invention is further configured such that: the fixed slide is provided with through slide rails 23 on both sides of the limiting block 20, and the limiting block 20 is provided with balance support rods 24 on both sides and the balance support rods 24 are slidably connected within the slide rails 23.

[0037] By adopting the above technical solution, the balance support rod 24 and the slide rail 23 cooperate to guide and balance the movement of the limiting block 20, preventing the limiting block 20 from shifting or tilting during movement, ensuring that the limiting block 20 is always parallel and aligned with the fixing ring frame 19, and improving the stability and reliability of the irrigation device. At the same time, the sliding cooperation between the slide rail 23 and the balance support rod 24 reduces the stress on the rotating screw 21, extends the service life of the components, and ensures the long-term stable operation of the device.

[0038] The present invention is further configured such that: the flushing structure also includes a second flushing circuit and a second fixed structure symmetrically arranged with the first flushing circuit and the first fixed structure; the end of the flushing liquid delivery pipe 12 is provided with a tee member 2, and the other two ends of the tee member 2 are respectively connected to the flushing pipes 31 of the first flushing circuit and the second flushing circuit; the end of the waste liquid collection pipe 9 is provided with a tee member 25, and the other two ends of the tee member 25 are respectively connected to the waste liquid return pipes 27 of the first flushing circuit and the second flushing circuit.

[0039] By adopting the above technical solution, the dual flushing circuit and dual fixed structure design can simultaneously flush two hemoperfusion devices, significantly improving flushing efficiency. This is especially suitable for scenarios with limited medical resources and the need for batch processing of perfusion devices. Three-way connectors 1 and 2 enable the diversion and delivery of flushing fluid and the collection of waste fluid, ensuring independent operation of the two circuits without interference. This retains the flexibility of single-circuit operation while increasing batch processing capacity, further optimizing the clinical applicability of the device.

[0040] The invention is further configured such that: the inner side of the fixing ring frame 19 and the surface of the limiting block 20 are both provided with protective pads; the flushing structure requires the selection of a flushing pipe 34 and a waste liquid outflow pipe 30 with appropriate pipe diameter according to the model of the blood perfusion device.

[0041] By adopting the above technical solution, the protective pad is made of flexible material, which can form a buffer when fixing the irrigation device, avoiding scratching or squeezing damage to the irrigation device shell caused by hard contact surfaces, while increasing friction and improving fixing stability. The flushing pipe 34 and waste liquid outlet pipe 30 with appropriate diameters are selected according to the irrigation device model to ensure a tight fit between the pipeline and the irrigation device interface, preventing flushing fluid leakage. At the same time, the flushing fluid flow rate and volume are guaranteed to match the irrigation device specifications, achieving precise flushing and further improving the device's adaptability and flushing effect.

[0042] The invention is further configured such that: the support frame 2 is also provided with a control device panel 10, the control device panel 10 is provided with an integrated circuit board with a micro-hole chip, a display screen and several multi-function buttons; the top of the lifting platform 6 is provided with a placement groove 17, in which a water collection box 14 is placed; the flushing liquid delivery pipe 12 passes through the back plate 7 and has a through hole 36 at the through point; the back of the back plate 7 is provided with a vertically arranged limiting slide bar 35, the support frame 2 is provided with a limiting hole plate 13 near the top, and the limiting slide bar 35 passes through the limiting hole plate 13; the bottom of the base 1 is provided with a locking universal wheel 11.

[0043] By adopting the above technical solution, the integrated circuit board, as the control core, can receive signals from the pressure and flow sensors. Multifunctional buttons enable the setting of flushing parameters and control of equipment start / stop. The display screen shows flushing pressure, flow rate, time, and other parameters in real time, facilitating intuitive monitoring by the operator and improving the controllability and accuracy of the flushing process. The motor 8 can also be controlled via the control panel 10 to adjust the height of the lifting platform 6 and the flushing structure. The water collection box 14 collects any small amounts of liquid that may leak from the pipe connections, preventing contamination of the lifting platform 6 and the ground, and facilitating cleaning. The limiting slide rod 35, in conjunction with the limiting hole plate 13, guides and limits the lifting movement of the lifting platform 6, ensuring a smooth and stable lifting process. The locking casters 11 allow for flexible movement of the device, enabling quick adjustment of the placement position according to usage needs. The locking function ensures the device remains stationary during use, balancing mobility and stability.

[0044] The present invention is further configured such that: the top of the flushing liquid tank 3 is provided with a fixed cover plate 303 fixedly connected to the flushing liquid tank 3, and the side of the fixed cover plate 303 is provided with a hinged movable cover plate 301; the side of the flushing liquid tank 3 is provided with a drain outlet 302, and a piston or valve is provided at the drain outlet 302; the top of the base 1 is provided with a baffle 4 for placing a wastewater tank 5, the top of the wastewater tank 5 is provided with a fixed cover plate 501 fixedly connected to the wastewater tank 5, and the side of the fixed cover plate 501 is provided with a hinged movable cover plate 502.

[0045] By adopting the above technical solution, the movable cover 301 can be easily opened to facilitate the addition of flushing fluid to the flushing fluid tank 3. The fixed cover 303 cooperates with the movable cover 301 to prevent external dust and impurities from entering the flushing fluid tank 3, ensuring the cleanliness of the flushing fluid. The drain outlet 302 facilitates the emptying of residual liquid in the flushing fluid tank 3 during equipment maintenance, and the piston or valve can effectively control the opening and closing of the drain outlet 302. The enclosure 4 serves to limit and fix the wastewater tank 5, preventing the wastewater tank 5 from tipping over during equipment movement or operation. The fixed cover 501 and the movable cover 502 prevent the evaporation of waste liquid and the generation of odors, while also preventing external pollutants from entering the wastewater tank 5, improving the hygiene of the operating environment.

[0046] An automatic flushing device for a blood perfusion apparatus includes a base 1 and a flushing structure. Locking casters 11 are installed at the bottom of the base 1, and a support frame 2 is fixedly installed on the top of the base 1. A flushing fluid tank 3 is fixedly installed on one side of the support frame 2. A fixed cover plate 303 is fixedly connected to the top of the flushing fluid tank 3, and a movable cover plate 301 is hinged to the side of the fixed cover plate 303. A drain outlet 302 is provided at the lower side of the flushing fluid tank 3, and a valve is installed at the drain outlet 302. A enclosure 4 is provided on the top of the base 1 on the other side of the support frame 2. A wastewater tank 5 is placed inside the enclosure 4. A fixed cover plate 501 is fixedly connected to the top of the wastewater tank 5, and a movable cover plate 502 is hinged to the side of the fixed cover plate 501.

[0047] The support frame 2 has symmetrically arranged lifting grooves 15 on the side opposite to the flushing liquid tank 3. An inner cavity is provided above the lifting grooves 15 inside the support frame 2. A vertically arranged threaded rotating column 16 is provided inside the lifting groove 15. Both ends of the threaded rotating column 16 are rotatably connected to the groove wall of the lifting groove 15 via bearings. Its top extends through the groove wall into the inner cavity and is fixedly mounted with a gear. A rotating rod is rotatably connected to the inner cavity via bearings. A gear is fixedly mounted on the rotating rod, meshing with the gear. One end of the rotating rod passes through the back of the support frame 2 and is fixedly connected to the output end of the motor 8. A lifting platform 6 is mounted on the opposite threaded rotating column 16 and is threadedly connected to the threaded rotating column 16. A placement groove 17 is provided on the top of the lifting platform 6, in which a water collection box 14 is placed. A back plate 7 is also fixedly mounted on the top of the lifting platform 6.

[0048] A vertically arranged limiting slide rod 35 is fixedly installed on the back of the back plate 7. A limiting hole plate 13 is fixedly installed near the top of the upright frame 2. The limiting slide rod 35 passes through the limiting hole plate 13 and is slidably connected to the limiting hole plate 13. A flushing structure is installed on the side of the back plate 7. The flushing structure includes a first flushing circuit, a first fixing structure, a second flushing circuit, and a second fixing structure arranged symmetrically. The first flushing circuit and the second flushing circuit have the same structure, both including a flushing pipe 31, a flushing pipe 34, a waste liquid return pipe 27, and a waste liquid outlet pipe 30. The first fixing structure and the second fixing structure are also the same, both including a fixing ring frame 19. The side of the fixing ring frame 19 is fixedly connected to the back plate 7 through a support plate 18. A through rotating screw 21 is provided on the opposite side of the fixing ring frame 19. The rotating screw 21 is threadedly connected to the fixing ring frame 19. One end of the rotating screw 21 located inside the fixing ring frame 19 is rotatably connected to a limiting block 20 through a bearing, and the other end is fixedly installed with a rotating handle 22. The fixed ring frame 19 has through slides 23 on both sides of the limiting block 20. Balance support rods 24 are fixedly installed on both sides of the limiting block 20. The balance support rods 24 are located in the slides 23 and are slidably connected to the slides 23. Protective pads are attached to the inner side of the fixed ring frame 19 and the surface of the limiting block 20.

[0049] Multiple mounting brackets 26 are fixedly installed on the back plate 7, and the waste liquid return pipe 27 and the flushing pipe 31 are respectively fixedly mounted on the mounting brackets 26. A pipeline solenoid valve 28 and a pressure and flow sensor 29 are connected in series on the waste liquid return pipe 27, and a pipeline solenoid valve 33 and a pressure and flow sensor 32 are connected in series on the flushing pipe 31. A pump is fixedly installed inside the flushing liquid tank 3. The pump uses a variable frequency motor and its output power can be adjusted. A fixed pipe is fixedly connected to the output end of the pump. The fixed pipe passes through the top of the flushing liquid tank 3 and has a connection port. The connection port is connected to the flushing liquid delivery pipe 12. The other end of the flushing liquid delivery pipe 12 passes through the perforation 36 on the back plate 7 and extends to the side of the back plate 7. A tee fitting 2 is installed at its end. The other two ends of the tee fitting 2 are respectively connected to the flushing pipes 31 of the first flushing circuit and the second flushing circuit. The other end of the flushing pipe 31 is detachably connected to the flushing pipe 34.

[0050] The top of the base 1 is also equipped with a waste liquid collection pipe 9. One end of the waste liquid collection pipe 9 is detachably connected to the wastewater tank 5 and connected to the inside of the wastewater tank 5. The other end is equipped with a three-way fitting 25. The other two ends of the three-way fitting 25 are respectively connected to the waste liquid return pipes 27 of the first flushing circuit and the second flushing circuit. The other end of the waste liquid return pipe 27 is detachably connected to the waste liquid outlet pipe 30. The flushing pipe 34 and the waste liquid outlet pipe 30 are both detachably connected to the blood perfusion device, and the flushing pipe 34 and the waste liquid outlet pipe 30 with appropriate pipe diameters can be selected according to the model of the blood perfusion device. The front of the stand 2 is also fixedly installed with a control device panel 10. The control device panel 10 is equipped with an integrated circuit board with a microporous chip, a display screen and several multi-function buttons. The integrated circuit board is electrically connected to the motor 8, the pump, the pipeline solenoid valve 28, the pressure and flow sensor 29, the pipeline solenoid valve 33, and the pressure and flow sensor 32.

[0051] Working principle: Before use, move the device to the designated position and lock it in place using the locking casters 11. Open the movable cover 301 and add sufficient flushing fluid to the flushing fluid tank 3. Select the appropriate flushing pipe 34 and waste fluid outlet pipe 30 according to the model of the blood perfusion device to be flushed, and connect them to the corresponding flushing pipe 31 and waste fluid return pipe 27, respectively. Place the blood perfusion device between the fixing ring 19 and the limiting block 20. Rotate the handle 22 to drive the rotating screw 21 to move the limiting block 20 until the protective pad is tightly attached to the perfusion device shell, thus completing the fixation of the perfusion device. Then connect the inlet and outlet of the perfusion device to the flushing pipe 34 and waste fluid outlet pipe 30, respectively.

[0052] The flushing pressure, flow rate, and time parameters are set via the multi-function buttons on the control panel 10. The integrated circuit board receives the setting command and controls the pump to start, simultaneously opening the pipeline solenoid valve 28 and the pipeline solenoid valve 33. The pump delivers the flushing fluid from the flushing fluid tank 3 through the fixed pipe and the flushing delivery pipe 12 to the tee fitting 2. After being split, the fluid flows into the flushing pipes 31 of the two flushing circuits. The pressure and flow sensor 32 monitors the pressure and flow data of the flushing fluid in real time and feeds it back to the integrated circuit board. If the parameters deviate from the set values, the integrated circuit board automatically adjusts the pump power or the opening of the pipeline solenoid valve 33 to ensure parameter stability.

[0053] The flushing fluid enters the hemoperfusion device through the flushing pipe 34 to flush the inside of the device. The waste fluid after flushing flows into the waste fluid return pipe 27 through the waste fluid outlet pipe 30. The pressure and flow sensor 29 monitors the waste fluid return parameters. The waste fluid flows through the tee fitting 25 to the waste fluid collection pipe 9 and finally flows into the wastewater tank 5 for centralized collection. During the flushing process, if it is necessary to adjust the operating height, the motor 8 can be started by controlling the control panel 10. The motor 8 drives the rotating rod to rotate, which drives the threaded rotating column 16 to rotate through the meshing transmission of gear 1 and gear 2. This, in turn, drives the lifting platform 6 to rise and fall smoothly along the direction of the limit slide bar 35 until the appropriate height is reached.

[0054] A small amount of leaked liquid generated during rinsing drips into the collection box 14 for easy subsequent cleaning. After rinsing is completed, the integrated circuit board controls the pump to stop working, closes the pipeline solenoid valve 28 and pipeline solenoid valve 33, and the operator disconnects the irrigation device from the pipeline and removes the irrigation device by turning the handle 22 in the reverse direction. When it is necessary to dispose of the waste liquid in the wastewater tank 5, the wastewater tank 5 can be directly removed and poured out. During maintenance, the valve on the side of the rinsing liquid tank 3 can be opened to drain the residual rinsing liquid through the drain outlet 302.

[0055] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An automatic flushing device for a blood perfusion apparatus, characterized in that, The device includes a base (1) and a flushing structure. The base (1) has a support frame (2) on its top and a flushing liquid tank (3) on one side of the support frame (2). The support frame (2) also has a lifting structure and a lifting platform (6). The lifting platform (6) is installed on the lifting structure. The lifting platform (6) has a back plate (7) on its top and the flushing structure is installed on the side of the back plate (7). The flushing liquid tank (3) has a pump inside. The output end of the pump has a fixed pipe that passes through the top of the flushing liquid tank (3) and has a connection port. The connection port has a flushing liquid delivery pipe (12). The other end of the flushing liquid delivery pipe (12) is connected to the flushing structure. The base (1) also has a wastewater tank (5) on its top and the flushing structure has a waste liquid collection pipe (9). The other end of the waste liquid collection pipe (9) is detachably connected to the wastewater tank (5) and communicates with the inside of the wastewater tank (5).

2. The automatic flushing device for a blood perfusion apparatus according to claim 1, characterized in that, The support frame (2) is symmetrically provided with lifting grooves (15) on the side away from the flushing liquid tank (3). The interior of the support frame (2) is provided with an inner cavity above the lifting grooves (15). A vertically arranged rotatable threaded rotating column (16) is provided in the lifting groove (15). The top of the threaded rotating column (16) penetrates the groove wall and is located in the inner cavity and is provided with a gear one. A rotating rod is provided in the inner cavity and is rotatably connected. A gear two is provided on the rotating rod and the gear two meshes with the gear one. One end of the rotating rod penetrates the back of the support frame (2) and is provided with a motor (8). The lifting platform (6) is installed on the opposite threaded rotating column (16) and is threadedly connected to the threaded rotating column (16).

3. The automatic flushing device for a blood perfusion apparatus according to claim 1, characterized in that, The flushing structure includes a first flushing circuit and a first fixed structure; the first flushing circuit includes a flushing pipe (31), a flushing tube (34), a waste liquid return pipe (27), and a waste liquid outlet pipe (30); one end of the flushing pipe (31) is connected to the end of the flushing delivery pipe (12), and the other end is detachably connected to the flushing tube (34); one end of the waste liquid return pipe (27) is connected to the waste liquid collection pipe (9), and the other end is detachably connected to the waste liquid outlet pipe (30); the flushing tube (34) and the waste liquid outlet pipe (30) are detachably connected to the blood perfusion device.

4. The automatic flushing device for a blood perfusion apparatus according to claim 3, characterized in that, The back plate (7) is provided with multiple card holders (26), and the waste liquid return pipe (27) and the flushing pipe (31) are respectively fixed on the card holders (26); the waste liquid return pipe (27) is provided with a pipeline solenoid valve (28) and a pressure flow sensor (29), and the flushing pipe (31) is provided with a pipeline solenoid valve (33) and a pressure flow sensor (32).

5. An automatic flushing device for a blood perfusion apparatus according to claim 3, characterized in that, The first fixing structure includes a fixing ring frame (19), and the side of the fixing ring frame (19) is provided with a support plate (18) and fixedly connected to the back plate (7); the fixing slide is provided with a through rotating screw (21) opposite the support plate (18), and the rotating screw (21) is provided with a limiting block (20) at one end inside the fixing slide and a rotating handle (22) at the other end.

6. An automatic flushing device for a blood perfusion apparatus according to claim 5, characterized in that, The fixed slide has through slide rails (23) on both sides of the limiting block (20), and the limiting block (20) has balance support rods (24) on both sides, and the balance support rods (24) are slidably connected in the slide rails (23).

7. An automatic flushing device for a blood perfusion apparatus according to claims 3-6, characterized in that, The flushing structure also includes a second flushing circuit and a second fixed structure symmetrically arranged with the first flushing circuit and the first fixed structure; the end of the flushing liquid delivery pipe (12) is provided with a tee member two, and the other two ends of the tee member two are respectively connected to the flushing pipes (31) of the first flushing circuit and the second flushing circuit; the end of the waste liquid collection pipe (9) is provided with a tee member one (25), and the other two ends of the tee member one (25) are respectively connected to the waste liquid return pipes (27) of the first flushing circuit and the second flushing circuit.

8. An automatic flushing device for a blood perfusion apparatus according to claim 7, characterized in that, The inner side of the fixed ring frame (19) and the surface of the limiting block (20) are both provided with protective pads; the flushing structure requires the selection of a flushing tube (34) and a waste liquid outflow tube (30) with appropriate diameter according to the model of the blood perfusion device.

9. An automatic flushing device for a blood perfusion apparatus according to claim 1, characterized in that, The stand (2) is also provided with a control panel (10), which is provided with an integrated circuit board with a micro-hole chip, a display screen and several multi-function buttons; the top of the lifting platform (6) is provided with a placement slot (17), in which a water collection box (14) is placed; the flushing liquid delivery pipe (12) passes through the back plate (7) and has a through hole (36) at the through point; the back of the back plate (7) is provided with a vertically arranged limiting slide rod (35), and the stand (2) is provided with a limiting hole plate (13) near the top, through which the limiting slide rod (35) passes; the bottom of the base (1) is provided with locking casters (11).

10. An automatic flushing device for a blood perfusion apparatus according to claim 1, characterized in that, The flushing fluid tank (3) has a fixed cover plate (303) fixedly connected to the top of the flushing fluid tank (3), and a hinged movable cover plate (301) is provided on the side of the fixed cover plate (303); the flushing fluid tank (3) has a drain outlet (302) on the side, and a piston or valve is provided at the drain outlet (302); the base (1) has a enclosure (4) on the top for placing a wastewater bucket (5), and a fixed cover plate (501) fixedly connected to the top of the wastewater bucket (5), and a hinged movable cover plate (502) is provided on the side of the fixed cover plate (501).

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