Disposable intravenous injection infusion needle device and using method thereof

Abstract

A disposable intravenous injection infusion needle device is characterized in that a disposable external replacement infusion shell, a disinfection treatment mechanism, a liquid medicine conduction mechanism and a liquid impurity removal mechanism are arranged to be of a separable structure, a built-in partition plate is arranged in an inner cavity of the disposable external replacement infusion shell, and a circular protective sleeve is arranged on one side of the outer wall of the disposable external replacement infusion shell; the disinfection treatment mechanism is arranged on one side of the built-in partition plate, the liquid medicine conduction mechanism is arranged on the other side of the built-in partition plate, and the liquid impurity removal mechanism is arranged between the disposable external replacement infusion shell and the circular protection sleeve. The disposable external replaceable infusion shell, the disinfection treatment mechanism, the liquid medicine conduction mechanism and the liquid impurity removal mechanism are designed to be of a separable structure, replacement and maintenance are easy, the use cost is reduced, and meanwhile the flexibility and upgradability of equipment are improved; the disposable external replacement infusion shell considers the requirements of environmental protection and sustainability.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical injection, and specifically relates to a disposable intravenous injection infusion needle device and its usage method. Background Art

[0002] In the medical field, intravenous injection, as a common administration method, has extremely high requirements for safety and sterility. There are some problems in the use process of traditional intravenous injection infusion needle devices, and these problems are directly related to the treatment effect and safety of patients.

[0003] Specifically, the common disposable intravenous injection infusion needle devices on the current market mainly have the following deficiencies:

[0004] First of all, the structure of traditional infusion devices is often relatively fixed, and there is a lack of sufficient flexibility and upgradability between various components. Once a component fails or is damaged, the whole device often needs to be replaced, which not only increases the usage cost but also brings inconvenience to the equipment management and maintenance of medical institutions.

[0005] Secondly, traditional infusion devices have deficiencies in disinfection treatment. Due to the lack of an automatic disinfection mechanism for the liquid medicine, bacteria and impurities in the liquid medicine cannot be effectively removed, thus increasing the risk of infection caused by infusion for patients and affecting the treatment effect of patients.

[0006] In addition, there are also problems of fluctuations and impacts in the process of liquid medicine conduction in traditional infusion devices, resulting in unstable transmission of the liquid medicine, and further affecting the comfort of infusion and the acceptance of patients. Especially in the case of long-term infusion, this problem is more prominent.

[0007] Finally, traditional infusion devices also have certain limitations in removing liquid impurities. Due to the lack of a double filtration mechanism for impurities in the liquid medicine, the purity and safety of the liquid medicine cannot be fully guaranteed, resulting in patients receiving infusion treatment containing impurities or pollutants, thus affecting the treatment effect and the recovery process of patients. Summary of the Invention

[0008] In view of the above situation, to overcome the defects of the prior art, the present invention provides a disposable intravenous injection infusion needle device and its usage method to at least partially solve the above technical problems.

[0009] The technical solution adopted by the present invention is as follows:

[0010] The present invention proposes a disposable intravenous injection infusion needle device, comprising:

[0011] The disposable external replacement infusion shell further includes a disinfection treatment mechanism, a liquid medicine conduction mechanism, and a liquid impurity removal mechanism. The disposable external replacement infusion shell and the disinfection treatment mechanism, the liquid medicine conduction mechanism, and the liquid impurity removal mechanism are arranged as separable structures;

[0012] An inner partition is provided in the inner cavity of the disposable external replacement infusion shell. A circular protective sleeve is provided on one side of the outer wall of the disposable external replacement infusion shell. The disinfection treatment mechanism is arranged on one side of the inner partition, the liquid medicine conduction mechanism is arranged on the other side of the inner partition, and the liquid impurity removal mechanism is arranged between the disposable external replacement infusion shell and the circular protective sleeve.

[0013] In an embodiment of the present invention, the disinfection treatment mechanism includes a fixed installation box one, a general-purpose liquid extraction pump one, an L-shaped delivery pipe, a general-purpose solenoid valve one, an auxiliary delivery pipe, a circular filter plate one, a circular filter plate two, a bearing seat one, a bearing seat two, a damping rod one, a buffer spring one, a fixed threaded rod, an auxiliary rotating blade, a ferrite magnet one, and a ferrite magnet two. The fixed installation box one is arranged on one side of the inner partition. The general-purpose liquid extraction pump one is arranged in the inner cavity of the fixed installation box one. An auxiliary delivery pipe is provided on one side of the fixed installation box one. A circular filter plate one is provided in the inner cavity of the auxiliary delivery pipe. A bearing seat one is provided on one side of the circular filter plate one. A fixed threaded rod is provided on the other side of the bearing seat one. An auxiliary rotating blade is provided on the outer wall of the fixed threaded rod.

[0014] In an embodiment of the present invention, the liquid medicine conduction mechanism includes a fixed installation box two, a general-purpose liquid extraction pump two, an L-shaped connecting pipe, a general-purpose solenoid valve two, a damping rod two, a buffer spring two, a limiting plate, a mounting block, a general-purpose liquid extraction pump one control button one, a transverse delivery pipe, and an L-shaped limiting clamping rod. The fixed installation box two is arranged on one side of the inner wall of the disposable external replacement infusion shell. The general-purpose liquid extraction pump two is arranged inside the disposable external replacement infusion shell. One end of the L-shaped connecting pipe is arranged inside the fixed installation box two. A damping rod two is provided on the outer wall of one end of the L-shaped connecting pipe. The mounting block is arranged on one side of the inner wall of the fixed installation box two. The output end of the general-purpose liquid extraction pump two is provided with a transverse delivery pipe. The other end of the L-shaped connecting pipe is arranged outside the disposable external replacement infusion shell. A general-purpose solenoid valve two is provided on the outer wall of the L-shaped connecting pipe. A buffer spring two is provided on the outer wall of the damping rod two. A limiting plate is provided at one end of the damping rod two. L-shaped limiting clamping rods are provided on the outer walls of the transverse delivery pipe and the auxiliary delivery pipe and are adapted to each other.

[0015] In an embodiment of the present invention, the liquid impurity removal mechanism includes a circular limit plate, a limit fixing groove, an auxiliary filter screen, ferrite magnet III, ferrite magnet IV, touch block I, general-purpose liquid pumping pump II control button, general-purpose liquid pumping pump I control button II, damping rod III, buffer spring III, and touch block II. The circular limit plate is provided on one side of the outer wall of the disposable external replacement infusion shell. A limit fixing groove is formed on the inner wall of the circular limit plate. The auxiliary filter screen is arranged in the inner cavity of the limit fixing groove. Ferrite magnet III is provided on one side of the inner wall of the limit fixing groove, and a matching ferrite magnet IV is provided on one side of the outer wall of the auxiliary filter screen.

[0016] In an embodiment of the present invention, an L-shaped delivery pipe is provided on one side of the fixed installation box I. A general-purpose solenoid valve I is provided on the outer wall of the L-shaped delivery pipe. The other end of the L-shaped delivery pipe extends to the outside of the disposable external replacement infusion shell. One end of the fixed threaded rod is provided with a bearing seat II. A circular filter plate II is provided on the other side of the bearing seat II. A damping rod I is provided on one side of the outer wall of the auxiliary rotating blade. A buffer spring I is provided on the outer wall of the damping rod I. Ferrite magnet I is provided on the other side of the outer wall of the auxiliary rotating blade. Ferrite magnet II is provided on the outer wall of the bearing seat II.

[0017] In an embodiment of the present invention, damping rods III are provided on both sides of the inner wall of the limit fixing groove. Matching buffer springs III are provided on the outer walls of the damping rods III. Touch block I is provided at the bottom of one side of the outer wall of the auxiliary filter screen, and touch block II is provided at the top of one side of the outer wall of the auxiliary filter screen.

[0018] In an embodiment of the present invention, the general-purpose liquid pumping pump I control button I is arranged inside the installation block. The general-purpose liquid pumping pump I control button I is electrically connected to the general-purpose liquid pumping pump I through a conducting wire. The general-purpose liquid pumping pump II control button is arranged at the bottom of the inner wall of the limit fixing groove. The general-purpose liquid pumping pump II control button is electrically connected to the general-purpose liquid pumping pump II through a conducting wire. The general-purpose liquid pumping pump I control button II is arranged at the top of the inner wall of the limit fixing groove. The general-purpose liquid pumping pump I control button II is electrically connected to the general-purpose liquid pumping pump I through a conducting wire.

[0019] In an embodiment of the present invention, a data control module is provided on one side of the outer wall of the disposable external replacement infusion shell. The general-purpose liquid pumping pump I, the general-purpose solenoid valve I, the general-purpose liquid pumping pump II, and the general-purpose solenoid valve II are respectively electrically connected to the data control module through conducting wires.

[0020] In one embodiment of the present invention, auxiliary pulling handles are respectively provided on both sides of the outer wall of the disposable external replacement infusion shell. Anti-slip patterns are provided on the outer walls of the two auxiliary pulling handles. A spacer plate is provided in the inner cavity of the circular protective cover. A first filter screen is provided on the top of the spacer plate, and a second filter screen is provided on the bottom of the spacer plate.

[0021] In one embodiment of the present invention, a method for using a disposable intravenous infusion needle device includes the following steps:

[0022] Step 1: Pour the liquid medicine to be infused into the disposable external replacement infusion shell. Start the general-purpose liquid pumping pump 1 in the disinfection treatment mechanism, and pump the liquid medicine into the auxiliary transmission conduit through the L-shaped delivery pipe. The liquid medicine passes through the first circular filter plate for preliminary filtration to remove larger impurities.

[0023] Step 2: The liquid medicine enters the rotary filtration system composed of a bearing seat 1, a fixed threaded rod, and an auxiliary rotating blade. Micro-impurities are further removed through rotation, and metal particles in the liquid medicine are removed by the magnetic adsorption of ferrite magnet 1 and ferrite magnet 2. The disinfected liquid medicine flows back to the designated area of the disposable external replacement infusion shell through the auxiliary transmission conduit, and is ready for the next step of liquid medicine conduction.

[0024] Step 3: Start the general-purpose liquid pumping pump 2 in the liquid medicine conduction mechanism, and pump the disinfected liquid medicine into the fixed installation box 2 through the L-shaped connecting pipe. On the outer wall of the L-shaped connecting pipe, the damping rod 2 and the buffer spring 2 work together to provide stable liquid medicine flow and prevent pipeline vibration caused by changes in liquid medicine pressure. After being pressurized by the general-purpose liquid pumping pump 2, the liquid medicine is transported to the infusion needle through the horizontal delivery pipe for intravenous injection.

[0025] Step 4: During the liquid medicine conduction process, the general-purpose solenoid valve 2 is responsible for controlling the flow rate of the liquid medicine to ensure the stability and safety of the infusion process. The L-shaped limit clamping rod is used to fix the horizontal delivery pipe and the auxiliary transmission conduit to prevent them from shifting or falling off due to external forces.

[0026] Step 5: While the liquid medicine is being conducted, the liquid impurity removal mechanism starts to work. The residual liquid medicine in the disposable external replacement infusion shell is filtered and removed through the spacer plate, the first filter screen, and the second filter screen in the circular protective cover. The spacer plate divides the liquid medicine into upper and lower layers, which are respectively finely filtered through the first filter screen and the second filter screen to ensure that the liquid medicine finally entering the human body is pure and free of impurities.

[0027] The beneficial effects of the technical solution of the present invention are as follows:

[0028] The disposable external replacement infusion shell of the present invention is designed as a separable structure with a disinfection treatment mechanism, a liquid medicine conduction mechanism, and a liquid impurity removal mechanism, which is easy to replace and maintain, reduces the use cost, and improves the flexibility and upgradability of the device at the same time; the disposable external replacement infusion shell takes into account environmental protection and sustainability requirements. After use, a new infusion shell can be easily replaced, avoiding the pollution and damage problems caused by the long-term use of traditional infusion devices, and reducing the treatment cost of medical waste and the environmental burden.

[0029] Through the coordinated work of components such as a general-purpose liquid extraction pump, an L-shaped delivery pipe, a general-purpose solenoid valve, and a circular filter plate, the disinfection treatment mechanism of the present invention realizes the automatic disinfection treatment of the liquid medicine, effectively removes bacteria and impurities in the liquid medicine, improves the safety and sterility of infusion, and reduces the infection risk caused by infusion for patients.

[0030] The liquid medicine conduction mechanism of the present invention adopts components such as a general-purpose liquid extraction pump, an L-shaped connecting pipe, a damping rod, and a buffer spring to ensure the stability and continuity of the liquid medicine during transmission. The design of the damping rod and the buffer spring effectively reduces the fluctuations and impacts of the liquid medicine during transmission, and improves the comfort of infusion and the acceptance of patients.

[0031] The liquid impurity removal mechanism of the present invention realizes the double filtration of impurities in the liquid medicine through the partition plate, the first filter screen, and the second filter screen in the circular protective sleeve, further improving the purity and safety of the liquid medicine, and ensuring that the patient receives high-quality and impurity-free infusion treatment.

[0032] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Brief Description of the Drawings

[0033] The above-mentioned and / or additional aspects and advantages of the present invention will become apparent and easy to understand from the following description of the embodiments in conjunction with the drawings, wherein:

[0034] Figure 1 is a perspective view of the disposable intravenous injection infusion needle device proposed by the present invention;

[0035] Figure 2 is another perspective view of the disposable intravenous injection infusion needle device proposed by the present invention;

[0036] Figure 3 is the front view of the disposable intravenous injection infusion needle device proposed by the present invention;

[0037] Figure 4 is the side view of the disposable intravenous injection infusion needle device proposed by the present invention;

[0038] Figure 5 is Figure 3Cross-sectional view along cutting plane A-A in [description];

[0039] Figure 6 is Figure 5 Cross-sectional view along cutting plane B-B in [description];

[0040] Figure 7 is Figure 4 Cross-sectional view along cutting plane C-C in [description];

[0041] Figure 8 is Figure 6 Partial enlarged view at position I in [description];

[0042] Figure 9 is Figure 6 Partial enlarged view at position II in [description];

[0043] Figure 10 is Figure 6 Partial enlarged view at position III in [description];

[0044] Figure 11 Internal exploded view of the auxiliary transfer catheter of the disposable intravenous injection infusion needle device proposed by the present invention.

[0045] In the figure: 1. Disposable external replacement infusion shell; 2. Auxiliary pull handle; 3. Data control module; 4. Built-in partition; 5. Circular protective sleeve; 6. Spacer; 7. First filter net; 8. Second filter net; 9. Disinfection treatment mechanism; 10. Fixed installation box I; 11. Universal liquid extraction pump I; 12. L-shaped delivery pipe; 13. Universal solenoid valve I; 14. Auxiliary transfer catheter; 15. First circular filter plate; 16. Second circular filter plate; 17. Bearing seat I; 18. Bearing seat II; 19. First damping rod; 20. First buffer spring; 21. Fixed threaded rod; 22. Auxiliary rotating blade; 23. First ferrite magnet; 24. Second ferrite magnet; 25. Liquid conduction mechanism; 26. Fixed installation box II; 27. Universal liquid extraction pump II; 28. L-shaped connecting pipe; 29. Universal solenoid valve II; 30. Second damping rod; 31. Second buffer spring; 32. Limit plate; 33. Installation block; 34. First control button for universal liquid extraction pump I; 35. Horizontal delivery pipe; 36. L-shaped limit clamping rod; 37. Liquid impurity removal mechanism; 38. Circular limit plate; 39. Limit fixing groove; 40. Auxiliary filter net; 41. Third ferrite magnet; 42. Fourth ferrite magnet; 43. First touch block; 44. Control button for universal liquid extraction pump II; 45. Second control button for universal liquid extraction pump I; 46. Third damping rod; 47. Third buffer spring; 48. Second touch block. Detailed implementation manners

[0046] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0047] A disposable intravenous injection infusion needle device and its usage method according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0048] As Figures 1 to 11 shown, an embodiment of the present invention provides a disposable intravenous injection infusion needle device, including: a disposable external replacement infusion shell 1, and further including a disinfection treatment mechanism 9, a liquid medicine conduction mechanism 25, and a liquid impurity removal mechanism 37. The disposable external replacement infusion shell 1 is provided with a separable structure with the disinfection treatment mechanism 9, the liquid medicine conduction mechanism 25, and the liquid impurity removal mechanism 37; an internal partition 4 is provided in the inner cavity of the disposable external replacement infusion shell 1, and a circular protective sleeve 5 is provided on one side of the outer wall of the disposable external replacement infusion shell 1. The disinfection treatment mechanism 9 is arranged on one side of the internal partition 4, the liquid medicine conduction mechanism 25 is arranged on the other side of the internal partition 4, and the liquid impurity removal mechanism 37 is arranged between the disposable external replacement infusion shell 1 and the circular protective sleeve 5.

[0049] Auxiliary pull handles 2 are respectively provided on both sides of the outer wall of the disposable external replacement infusion shell 1, and anti-slip patterns are provided on the outer walls of the two auxiliary pull handles 2. A spacer plate 6 is provided in the inner cavity of the circular protective sleeve 5, a first filter screen 7 is provided on the top of the spacer plate 6, and a second filter screen 8 is provided on the bottom of the spacer plate 6.

[0050] In the specific application of the embodiment of the present invention, the disposable external replacement infusion shell 1 is set to be replaceable, which is convenient for replacement after single use to reduce the risk of cross-infection. An internal partition 4 is provided in the inner cavity of the disposable external replacement infusion shell 1 to divide the internal space of the infusion shell into two areas, which is convenient for the layout of components with different functions. On one side of the infusion shell 1, that is, on one side of the internal partition 4, a disinfection treatment mechanism 9 is provided. The disinfection treatment mechanism 9 performs necessary disinfection treatment on the liquid medicine about to enter the human body before infusion to ensure the purity and safety of the liquid medicine, effectively kill existing bacteria or viruses, and provide the first line of defense for the health of patients. On the other side of the internal partition 4, a liquid medicine conduction mechanism 25 is provided. The liquid medicine conduction mechanism 25 smoothly and accurately conducts the disinfected liquid medicine from the medicine storage container to the infusion needle to ensure the stable delivery of the liquid medicine and avoid dripping or interruption during the conduction process.

[0051] A liquid impurity removal mechanism 37 is provided between the disposable external replacement infusion shell 1 and the circular protective cover 5. Through a filtering mechanism, the liquid impurity removal mechanism 37 effectively intercepts and removes minute impurities in the liquid medicine, such as particulate matter and suspended matter, ensuring that the liquid medicine finally entering the patient's body is pure and free of impurities. On the outer wall of the infusion shell 1, auxiliary handles 2 are respectively provided on both sides. The handles not only facilitate the operation and handling of the device by medical staff, but the anti-slip patterns on their outer walls further increase the stability during gripping, preventing slipping in case of emergency or haste.

[0052] The partition plate 6 provided in the inner cavity of the circular protective cover 5 divides the inner space of the protective cover into upper and lower parts. A first filter screen 7 and a second filter screen 8 are respectively provided at the top and bottom of the partition plate 6. These two layers of filter screens not only further filter impurities in the liquid medicine, but also prevent external dust, foreign objects, etc. from entering the infusion system through the opening of the protective cover, thus providing multiple safeguards for the safety and cleanliness of the liquid medicine.

[0053] In a possible implementation manner, the disinfection treatment mechanism 9 includes a fixed installation box one 10, a general-purpose liquid extraction pump one 11, an L-shaped delivery pipe 12, a general-purpose solenoid valve one 13, an auxiliary delivery pipe 14, a circular filter plate one 15, a circular filter plate two 16, a bearing seat one 17, a bearing seat two 18, a damping rod one 19, a buffer spring one 20, a fixed threaded rod 21, an auxiliary rotating blade 22, a ferrite magnet one 23, and a ferrite magnet two 24. The fixed installation box one 10 is provided on one side of the built-in partition 4. The general-purpose liquid extraction pump one 11 is provided in the inner cavity of the fixed installation box one 10. An auxiliary delivery pipe 14 is provided on one side of the fixed installation box one 10. A circular filter plate one 15 is provided in the inner cavity of the auxiliary delivery pipe 14. A bearing seat one 17 is provided on one side of the circular filter plate one 15. A fixed threaded rod 21 is provided on the other side of the bearing seat one 17. An auxiliary rotating blade 22 is provided on the outer wall of the fixed threaded rod 21.

[0054] In the specific application of the embodiment of the present invention, the disinfection treatment mechanism 9 includes a fixed installation box one 10, which is firmly provided on one side of the built-in partition 4. In the inner cavity of the fixed installation box one 10, a general-purpose liquid extraction pump one 11 is installed. The liquid medicine is extracted and sent for disinfection treatment. When the liquid extraction pump one 11 starts working, the liquid medicine to be treated is extracted from the medicine storage container, and these liquid medicines are then sent into the auxiliary delivery pipe 14. A circular filter plate one 15 is provided in the inner cavity of the auxiliary delivery pipe 14, which is the first filtering barrier before the liquid medicine enters the disinfection treatment. The circular filter plate one 15 can effectively intercept and remove large particle impurities in the liquid medicine, such as dust and fibers, ensuring the effectiveness of the subsequent disinfection treatment and the safety of the liquid medicine.

[0055] The preliminarily filtered liquid medicine will continue to flow. At this time, it will encounter the first bearing seat 17. One side of the first bearing seat 17 is connected to the fixed threaded rod 21. An auxiliary rotating blade 22 is installed on the outer wall of the fixed threaded rod 21. When the liquid medicine flows through, the rotating blade will rotate under the impact force of the liquid medicine. The rotational movement not only helps to further stir and mix the liquid medicine, improving the uniformity of the disinfection treatment, but also assists in removing finer impurities through the centrifugal force generated by the rotation. The circular filter plate 16 serves as the second filtration barrier to further purify the liquid medicine; the combination of the second bearing seat 18, the first damping rod 19, and the first buffer spring 20 is used to adjust or stabilize the movement state of some moving parts; while the first ferrite magnet 23 and the second ferrite magnet 24 are used for magnetic separation or adsorption of certain specific impurities or components.

[0056] In a possible implementation manner, the liquid medicine conduction mechanism 25 includes a fixed installation box 26, a general-purpose liquid pumping pump 27, an L-shaped connecting pipe 28, a general-purpose solenoid valve 29, a second damping rod 30, a second buffer spring 31, a limiting plate 32, a mounting block 33, a first control button for the general-purpose liquid pumping pump 34, a transverse conveying pipe 35, and an L-shaped limiting clamping rod 36. The fixed installation box 26 is provided on one side of the inner wall of the disposable external replacement infusion shell 1. The general-purpose liquid pumping pump 27 is provided inside the disposable external replacement infusion shell 1. One end of the L-shaped connecting pipe 28 is provided inside the fixed installation box 26. The outer wall of one end of the L-shaped connecting pipe 28 is provided with the second damping rod 30. The mounting block 33 is provided on one side of the inner wall of the fixed installation box 26. The output end of the general-purpose liquid pumping pump 27 is provided with the transverse conveying pipe 35. The other end of the L-shaped connecting pipe 28 is provided outside the disposable external replacement infusion shell 1. The general-purpose solenoid valve 29 is provided on the outer wall of the L-shaped connecting pipe 28. The second buffer spring 31 is provided on the outer wall of the second damping rod 30. One end of the second damping rod 30 is provided with the limiting plate 32. The outer walls of the transverse conveying pipe 35 and the auxiliary conveying pipe 14 are both provided with adapted L-shaped limiting clamping rods 36.

[0057] In the specific application of the embodiment of the present invention, the liquid medicine conduction mechanism 25 stably and accurately conducts the disinfected liquid medicine from the storage container into the patient's body. The fixed installation box 26 is firmly installed on one side of the inner wall of the disposable external replacement infusion shell 1, serving as the support and accommodation structure of the entire liquid medicine conduction mechanism. Inside the fixed installation box 26, there is a general-purpose liquid pumping pump 27, which is the power source for liquid medicine conduction. When the liquid pumping pump 27 is started, it is connected to the container storing the liquid medicine through a series of pipelines to extract the liquid medicine.

[0058] The extracted liquid medicine is then conducted through the L-shaped connecting pipe 28. One end of the L-shaped connecting pipe 28 extends deep into the interior of the fixed installation box two 26 and is connected to the output end of the liquid pumping pump two 27. To ensure the stability and flexibility of the L-shaped connecting pipe 28 during the conduction process, a damping rod two 30 is provided on its outer wall. The damping rod two 30 not only provides the necessary support but also absorbs and alleviates vibrations during the conduction of the liquid medicine, protecting the entire conduction system from damage. At the same time, a limiting plate 32 is provided at one end of the damping rod two 30 to further enhance the stability of the L-shaped connecting pipe 28. On the outer wall of the L-shaped connecting pipe 28, a general-purpose solenoid valve two 29 is also provided, which can accurately open or close the channel for the conduction of the liquid medicine when needed. By controlling the on-off state of the solenoid valve two 29, precise control of the conduction speed, quantity, etc. of the liquid medicine can be achieved, thereby ensuring the safety and effectiveness of the infusion process.

[0059] A buffer spring two 31 is also provided on the outer wall of the damping rod two 30. The buffer spring two 31 further absorbs and alleviates the vibrations and impacts during the conduction of the liquid medicine, protecting the entire conduction system from damage and making the liquid medicine conduction mechanism 25 more stable and reliable during the infusion process. After passing through the L-shaped connecting pipe 28, the extracted liquid medicine enters the horizontal conveying pipe 35. The horizontal conveying pipe 35 serves as the main channel for the conduction of the liquid medicine to ensure the stable and accurate conveyance of the liquid medicine. On the outer wall of the horizontal conveying pipe 35, an L-shaped limiting clamping rod 36 adapted to the auxiliary conveying pipe 14 (i.e., the pipe connecting the disinfection treatment mechanism and the liquid medicine conduction mechanism) is provided. The L-shaped limiting clamping rod 36 firmly clamps the horizontal conveying pipe 35 and the auxiliary conveying pipe 14 together, ensuring a tight and stable connection between the two and preventing the leakage of the liquid medicine during the conduction process.

[0060] In a possible implementation manner, the liquid impurity removal mechanism 37 includes a circular limiting plate 38, a limiting fixing groove 39, an auxiliary filter screen 40, a ferrite magnet three 41, a ferrite magnet four 42, a touch block one 43, a general-purpose liquid pumping pump two control button 44, a general-purpose liquid pumping pump one control button two 45, a damping rod three 46, a buffer spring three 47, and a touch block two 48. The circular limiting plate 38 is provided on one side of the outer wall of the disposable external replacement infusion shell 1. A limiting fixing groove 39 is opened on the inner wall of the circular limiting plate 38. The auxiliary filter screen 40 is provided in the inner cavity of the limiting fixing groove 39. A ferrite magnet three 41 is provided on one side of the inner wall of the limiting fixing groove 39, and a matching ferrite magnet four 42 is provided on one side of the outer wall of the auxiliary filter screen 40.

[0061] In the specific application of the embodiments of the present invention, the liquid impurity removal mechanism 37 is responsible for removing impurities in the liquid medicine before it enters the patient's body to ensure the safety and effectiveness of infusion. The circular limiting plate 38 is firmly installed on one side of the outer wall of the disposable external replacement infusion shell 1 as the support and fixing structure of the entire liquid impurity removal mechanism. An axial limiting fixing groove 39 is provided on the inner wall of the circular limiting plate 38 for installing and fixing the auxiliary filter screen 40. The auxiliary filter screen 40 is a key component for removing impurities in the liquid medicine and is arranged in the inner cavity of the axial limiting fixing groove 39. The material and design of the auxiliary filter screen 40 should be able to filter out most of the impurities in the liquid medicine, such as particulate matter, fibers, etc., while ensuring the smooth flow of the liquid medicine.

[0062] To enhance the fixing effect and filtering effect of the auxiliary filter screen 40, a ferrite magnet three 41 is provided on one side of the inner wall of the axial limiting fixing groove 39, and a ferrite magnet four 42 that cooperates with the ferrite magnet three 41 is provided on one side of the outer wall of the auxiliary filter screen 40. Through the mutual attraction of the magnets, the auxiliary filter screen 40 is firmly fixed in the axial limiting fixing groove 39, and at the same time, it helps to reduce the leakage of the liquid medicine and the escape of impurities during the filtering process.

[0063] During the conduction of the liquid medicine, when the liquid medicine flows through the auxiliary filter screen 40, the impurities therein will be filtered out and remain on the filter screen. As the continuous conduction of the liquid medicine and the continuous accumulation of impurities, the filtering efficiency of the auxiliary filter screen 40 will gradually decrease. When it is necessary to clean the auxiliary filter screen 40, the cleaning program can be started by operating the touch block one 43 or the touch block two 48. The program includes starting a general-purpose liquid pumping pump (such as liquid pumping pump one or liquid pumping pump two, specifically depending on the design of the device) to reverse pump the liquid medicine, so as to wash away the impurities on the filter screen; or removing the impurities by other mechanical or physical means.

[0064] The damping rod three 46 and the buffer spring three 47 are used to provide necessary buffering and stabilizing effects during the cleaning process. For example, when the touch block is operated, the damping rod three 46 and the buffer spring three 47 can absorb and relieve the resulting vibration and impact, protecting the entire liquid impurity removal mechanism from damage.

[0065] In a possible implementation manner, an L-shaped delivery pipe 12 is provided on one side of the fixed installation box one 10. A general-purpose solenoid valve one 13 is provided on the outer wall of the L-shaped delivery pipe 12. The other end of the L-shaped delivery pipe 12 extends to the outside of the disposable external replacement infusion shell 1. One end of the fixed threaded rod 21 is provided with a bearing seat two 18. A circular filter plate two 16 is provided on the other side of the bearing seat two 18. A damping rod one 19 is provided on one side of the outer wall of the auxiliary rotating blade 22. A buffer spring one 20 is provided on the outer wall of the damping rod one 19. A ferrite magnet one 23 is provided on the other side of the outer wall of the auxiliary rotating blade 22. A ferrite magnet two 24 is provided on the outer wall of the bearing seat two 18.

[0066] On both sides of the inner wall of the limit fixing groove 39, there are third damping rods 46. On the outer wall of the third damping rods 46, there are third buffer springs 47 adapted to them. At the bottom of one side of the outer wall of the auxiliary filter net 40, there is a first touch block 43, and at the top of one side of the outer wall of the auxiliary filter net 40, there is a second touch block 48.

[0067] In the specific application of the embodiment of the present invention, the L-shaped conveying pipe 12 in the device is responsible for guiding the liquid medicine from the fixedly installed first box 10 to the disposable external replacement infusion shell 1. On the outer wall of the L-shaped conveying pipe 12, there is a first general-purpose solenoid valve 13. The solenoid valve can accurately control the flow of the liquid medicine to ensure the opening or closing of the infusion channel when needed. After the liquid medicine flows through the L-shaped conveying pipe 12, it will enter a filtering system composed of a fixed threaded rod 21, a second bearing seat 18, and a second circular filter plate 16. The second circular filter plate 16 serves as a filtering medium and can intercept and remove large particle impurities in the liquid medicine. To improve the filtering effect and the stability of the system, the second bearing seat 18 is installed at one end of the fixed threaded rod 21, allowing the second circular filter plate 16 to be finely adjusted or rotated within a certain range to adapt to different usage scenarios.

[0068] On one side of the outer wall of the auxiliary rotating blade 22, there is a first damping rod 19 and a first buffer spring 20, providing necessary stability and buffering effect for the auxiliary rotating blade 22. When the liquid medicine flows through, the auxiliary rotating blade 22 will slightly rotate due to the dynamic action of the fluid. The rotation helps to further agitate the liquid medicine, promoting the contact between impurities and the filter plate, thereby improving the filtering efficiency. At the same time, the first damping rod 19 and the first buffer spring 20 can limit the excessive movement of the rotating blade and prevent unnecessary damage to the system.

[0069] On the other side of the outer wall of the auxiliary rotating blade 22, there is also a first ferrite magnet 23, and on the outer wall of the second bearing seat 18, there is a second ferrite magnet 24 that cooperates with it. The two pairs of magnets attract each other through magnetic force, providing an additional fixing point for the auxiliary rotating blade 22 and enhancing its stability during the working process. At the same time, the magnetic force also facilitates disassembly and maintenance, enabling users to easily clean or replace the filtering components.

[0070] Next, the liquid medicine will continue to flow through the limit fixing groove 39. On both sides of the inner wall of the limit fixing groove 39, there are third damping rods 46 and third buffer springs 47 adapted to them, which not only provide support and protection for the auxiliary filter net 40 but also absorb impact and vibration when the liquid medicine flows through, ensuring the stable operation of the system. The auxiliary filter net 40, as a secondary filtering device, can further remove tiny impurities in the liquid medicine. To ensure the cleanliness and smoothness of the filter net, a first touch block 43 and a second touch block 48 are respectively arranged at the bottom and top of one side of its outer wall. These touch blocks are used to cooperate with a certain cleaning or maintenance mechanism. For example, when the filter net needs to be cleaned or replaced, the touch blocks can trigger corresponding signals or actions to remind users to perform operations.

[0071] In a possible implementation, a general-purpose liquid extraction pump one control button 34 is provided inside the mounting block 33. The general-purpose liquid extraction pump one control button 34 is electrically connected to the general-purpose liquid extraction pump one 11 through a conducting wire. The general-purpose liquid extraction pump two control button 44 is provided at the bottom of the inner wall of the limit fixing groove 39. The general-purpose liquid extraction pump two control button 44 is electrically connected to the general-purpose liquid extraction pump two 27 through a conducting wire. The general-purpose liquid extraction pump one control button two 45 is provided at the top of the inner wall of the limit fixing groove 39. The general-purpose liquid extraction pump one control button two 45 is electrically connected to the general-purpose liquid extraction pump one 11 through a conducting wire.

[0072] In the specific application of the embodiment of the present invention, after the general-purpose liquid extraction pump one control button 34 is touched, the work of the general-purpose liquid extraction pump one 11 is automatically started without manual intervention, realizing full-automatic work; after the general-purpose liquid extraction pump two control button 44 is touched, the work of the general-purpose liquid extraction pump two 27 is automatically started without manual intervention; after the general-purpose liquid extraction pump one control button two 45 is touched, the work of the general-purpose liquid extraction pump one 11 is automatically started without manual intervention.

[0073] In a possible implementation, a data control module 3 is provided on one side of the outer wall of the disposable external replacement infusion shell 1. The general-purpose liquid extraction pump one 11, the general-purpose solenoid valve one 13, the general-purpose liquid extraction pump two 27, and the general-purpose solenoid valve two 29 are respectively electrically connected to the data control module 3 through conducting wires.

[0074] In the specific application of the embodiment of the present invention, the general-purpose liquid extraction pump one 11, the general-purpose solenoid valve one 13, the general-purpose liquid extraction pump two 27, and the general-purpose solenoid valve two 29 adopted by the present device are all mature existing technologies. The working principles of the general-purpose liquid extraction pump one 11, the general-purpose solenoid valve one 13, the general-purpose liquid extraction pump two 27, and the general-purpose solenoid valve two 29 are also well-known to those skilled in the art, and will not be described in detail here.

[0075] When the present invention is specifically used, the disposable external replacement infusion shell 1 carries the disinfection treatment mechanism 9, the liquid medicine conduction mechanism 25, and the liquid impurity removal mechanism 37. These mechanisms are set as separable structures with the disposable external replacement infusion shell 1, which is convenient for replacement and maintenance. An internal partition 4 is provided in the inner cavity of the disposable external replacement infusion shell 1 for separating different functional areas, and the circular protective sleeve 5 provides additional protection to prevent external pollution.

[0076] Specifically, on both sides of the outer wall of the disposable external replacement infusion shell 1, auxiliary pull handles 2 are provided to facilitate the operation of medical staff. The outer wall of the auxiliary pull handles 2 is provided with anti-slip patterns to ensure stable gripping even in a wet environment. A partition plate 6 is provided in the inner cavity of the circular protective sleeve 5, and a first filter screen 7 and a second filter screen 8 are respectively installed on the upper part of the partition plate 6. These filter screens are used to preliminarily filter the air or liquid entering the device to prevent impurities from entering.

[0077] Specifically, the disinfection treatment mechanism 9 includes a fixed installation box one 10, a general-purpose liquid pumping pump one 11, an L-shaped conveying pipe 12, and a general-purpose solenoid valve one 13. The fixed installation box one 10 is equipped with a general-purpose liquid pumping pump one 11, which is responsible for pumping the liquid medicine to be disinfected. The L-shaped conveying pipe 12 conveys the liquid medicine to the disinfection treatment area, where there is a circular filter plate one 15 and a circular filter plate two 16, as well as auxiliary bearing seats one 17 and bearing seats two 18 components. The liquid medicine is deeply disinfected through rotation, filtration and other methods. In addition, there are also components such as a damping rod one 19 and a buffer spring one 20, which are used to stabilize the movement of the filter plate and prevent vibration caused by the impact of the liquid medicine. The fixed threaded rod 21 and the auxiliary rotating blade 22 are used to adjust and fix the position of the filter plate. The ferrite magnet one 23 and the ferrite magnet two 24 further enhance the stability and durability of the structure through magnetic force.

[0078] Specifically, the liquid medicine conduction mechanism 25 is responsible for safely and accurately conveying the disinfected liquid medicine into the patient's body. It includes a fixed installation box two 26, a general-purpose liquid pumping pump two 27, and an L-shaped connecting pipe 28. The general-purpose liquid pumping pump two 27 extracts the liquid medicine from the disinfection treatment mechanism 9 and conveys it to the outside of the disposable external replacement infusion shell 1 through the L-shaped connecting pipe 28 for the patient to use. The outer wall of the L-shaped connecting pipe 28 is provided with a general-purpose solenoid valve two 29, which is used to control the flow of the liquid medicine. Components such as a damping rod two 30 and a buffer spring two 31 are used to reduce the vibration and impact during the liquid medicine conveying process and ensure the smooth conveying of the liquid medicine. The outer walls of the horizontal conveying pipe 35 and the auxiliary conveying pipe 14 are both provided with L-shaped limit clamping rods 36, which are used to clamp and fix the pipeline to prevent it from falling off or shifting.

[0079] Specifically, pour the liquid medicine to be infused into the disposable external replacement infusion shell 1, start the general-purpose liquid pumping pump one 11 in the disinfection treatment mechanism 9, and pump the liquid medicine into the auxiliary conveying pipe 14 through the L-shaped conveying pipe 12. The liquid medicine is preliminarily filtered through the circular filter plate one 15 to remove larger impurities.

[0080] Specifically, the liquid medicine enters the rotary filtration system composed of the bearing seat one 17, the fixed threaded rod 21 and the auxiliary rotating blade 22, further removes tiny impurities through rotation, and uses the magnetic adsorption effect of the ferrite magnet one 23 and the ferrite magnet two 24 to remove metal particles in the liquid medicine. The disinfected liquid medicine flows back to the designated area of the disposable external replacement infusion shell 1 through the auxiliary conveying pipe 14, preparing for the next step of liquid medicine conduction.

[0081] Specifically, start the general-purpose liquid pumping pump two 27 in the liquid medicine conduction mechanism 25, and pump the disinfected liquid medicine into the fixed installation box two 26 through the L-shaped connecting pipe 28. On the outer wall of the L-shaped connecting pipe 28, the damping rod two 30 and the buffer spring two 31 work together to provide stable liquid medicine flow and prevent pipeline vibration caused by changes in liquid medicine pressure. After the liquid medicine is pressurized by the general-purpose liquid pumping pump two 27, it is transported to the infusion needle through the horizontal delivery pipe 35 for intravenous injection.

[0082] Specifically, during the liquid medicine conduction process, the general-purpose solenoid valve two 29 is responsible for controlling the flow rate of the liquid medicine to ensure the stability and safety of the infusion process. The L-shaped limit clamping rod 36 is used to fix the horizontal delivery pipe 35 and the auxiliary transmission pipe 14 to prevent them from shifting or falling off due to external forces.

[0083] Specifically, while the liquid medicine is being conducted, the liquid impurity removal mechanism 37 starts to work. The residual liquid medicine in the disposable external replacement infusion shell 1 is filtered and removed through the partition plate 6, the first filter screen 7, and the second filter screen 8 in the circular protective cover 5. The partition plate 6 divides the liquid medicine into upper and lower layers, which are finely filtered through the first filter screen 7 and the second filter screen 8 respectively to ensure that the liquid medicine finally entering the human body is pure and free of impurities.

[0084] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0085] The above describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the spirit of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A disposable intravenous infusion needle device, characterized in that: include: The disposable external replacement infusion housing (1) further comprises a disinfection treatment mechanism (9), a liquid medicine conducting mechanism (25) and a liquid impurity removing mechanism (37), wherein the disposable external replacement infusion housing (1) and the disinfection treatment mechanism (9), the liquid medicine conducting mechanism (25) and the liquid impurity removing mechanism (37) are arranged as a separable structure; The inner cavity of the disposable external replacement infusion shell (1) is provided with a built-in partition (4), one side of the outer wall of the disposable external replacement infusion shell (1) is provided with a circular protective cover (5), the disinfection treatment mechanism (9) is arranged on one side of the built-in partition (4), the liquid medicine conducting mechanism (25) is arranged on the other side of the built-in partition (4), and the liquid impurity removing mechanism (37) is arranged between the disposable external replacement infusion shell (1) and the circular protective cover (5).

2. The disposable intravenous infusion needle device according to claim 1, characterized in that: The disinfection treatment mechanism (9) comprises a fixed installation box (10), a universal liquid pump (11), an L-shaped delivery pipe (12), a universal solenoid valve (13), an auxiliary conduction pipe (14), a circular filter plate (15), a circular filter plate (16), a bearing seat (17), a bearing seat (18), a damping rod (19), a buffer spring (20), a fixed threaded rod (21), an auxiliary rotating blade (22), a ferrite magnet (23) and a ferrite magnet (24). The fixed installation box (10) comprises a plurality of cylindrical ... (10) is arranged on one side of the built-in partition (4), the universal liquid pump (11) is arranged in the inner cavity of the fixed installation box (10), one side of the fixed installation box (10) is provided with an auxiliary conduction pipe (14), the inner cavity of the auxiliary conduction pipe (14) is provided with a circular filter plate (15), one side of the circular filter plate (15) is provided with a bearing seat (17), the other side of the bearing seat (17) is provided with a fixed threaded rod (21), and the outer wall of the fixed threaded rod (21) is provided with an auxiliary rotating blade (22).

3. The disposable intravenous infusion needle device according to claim 1, characterized in that: The liquid medicine transmission mechanism (25) comprises a second fixed installation box (26), a second universal liquid pump (27), an L-shaped connecting pipe (28), a second universal solenoid valve (29), a second damping rod (30), a second buffer spring (31), a limit plate (32), a mounting block (33), a universal liquid pump control button (34), a transverse delivery pipe (35) and an L-shaped limit clamping rod (36). The second fixed installation box (26) is arranged on one side of the inner wall of the disposable external replacement infusion shell (1), the second universal liquid pump (27) is arranged inside the disposable external replacement infusion shell (1), one end of the L-shaped connecting pipe (28) is arranged inside the second fixed installation box (26), and the L-shaped A damping rod (30) is provided on the outer wall of one end of the connecting pipe (28); the mounting block (33) is arranged on one side of the inner wall of the fixed mounting box (26); a transverse delivery pipe (35) is provided on the output end of the universal liquid pump (27); the other end of the L-shaped connecting pipe (28) is arranged outside the disposable external replacement infusion shell (1); a universal solenoid valve (29) is provided on the outer wall of the L-shaped connecting pipe (28); a buffer spring (31) is provided on the outer wall of the damping rod (30); a limit plate (32) is provided on one end of the damping rod (30); and the outer walls of the transverse delivery pipe (35) and the auxiliary conduction pipe (14) are both provided with matching L-shaped limit clamping rods (36).

4. The disposable intravenous infusion needle device according to claim 1, characterized in that: The liquid impurity removal mechanism (37) comprises a circular limit plate (38), a limit fixing groove (39), an auxiliary filter (40), a ferrite magnet three (41), a ferrite magnet four (42), a touch block one (43), a universal liquid pump two control button (44), a universal liquid pump one control button two (45), a damping rod three (46), a buffer spring three (47) and a touch block two (48), wherein the circular limit plate (38) is arranged on one side of the outer wall of the disposable external replacement infusion shell (1), the inner wall of the circular limit plate (38) is provided with a limit fixing groove (39), the auxiliary filter (40) is arranged in the inner cavity of the limit fixing groove (39), a ferrite magnet three (41) is arranged on one side of the inner wall of the limit fixing groove (39), and a matching ferrite magnet four (42) is arranged on one side of the outer wall of the auxiliary filter (40).

5. The disposable intravenous infusion needle device according to claim 2, characterized in that: An L-shaped delivery tube (12) is provided on one side of the fixed installation box (10), a universal electromagnetic valve (13) is provided on the outer wall of the L-shaped delivery tube (12), the other end of the L-shaped delivery tube (12) extends to the outside of the disposable external replacement infusion shell (1), a bearing seat (18) is provided on one end of the fixed threaded rod (21), a circular filter plate (16) is provided on the other side of the bearing seat (18), a damping rod (19) is provided on one side of the outer wall of the auxiliary rotating blade (22), a buffer spring (20) is provided on the outer wall of the damping rod (19), a ferrite magnet (23) is provided on the other side of the outer wall of the auxiliary rotating blade (22), and a ferrite magnet (24) is provided on the outer wall of the bearing seat (18).

6. The disposable intravenous infusion needle device according to claim 4, characterized in that: Damping rods three (46) are provided on both sides of the inner wall of the limiting fixing groove (39), and a matching buffer spring three (47) is provided on the outer wall of the damping rod three (46). A touch block one (43) is provided at the bottom of one side of the outer wall of the auxiliary filter screen (40), and a touch block two (48) is provided at the top of one side of the outer wall of the auxiliary filter screen (40).

7. The disposable intravenous infusion needle device according to claim 1, characterized in that: The universal liquid pump one control button (34) is arranged inside the mounting block (33), and the universal liquid pump one control button (34) is electrically connected to the universal liquid pump one (11) through a conductive line. The universal liquid pump two control button (44) is arranged at the bottom of the inner wall of the limiting fixing groove (39), and the universal liquid pump two control button (44) is electrically connected to the universal liquid pump two (27) through a conductive line. The universal liquid pump one control button (45) is arranged at the top of the inner wall of the limiting fixing groove (39), and the universal liquid pump one control button (45) is electrically connected to the universal liquid pump one (11) through a conductive line.

8. The disposable intravenous infusion needle device according to claim 1, characterized in that: A data control module (3) is provided on one side of the outer wall of the disposable external replacement infusion housing (1); the data control module (3) is electrically connected to a universal liquid pump 1 (11), a universal solenoid valve 1 (13), a universal liquid pump 2 (27) and a universal solenoid valve 2 (29) respectively through conductive wires.

9. The disposable intravenous infusion needle device according to claim 1, characterized in that: Auxiliary handles (2) are respectively provided on both sides of the outer wall of the disposable external replacement infusion shell (1), and the outer walls of the two auxiliary handles (2) are provided with anti-slip grooves. The inner cavity of the circular protective cover (5) is provided with a partition plate (6), and a filter screen 1 (7) is provided on the top of the partition plate (6), and a filter screen 2 (8) is provided on the bottom of the partition plate (6).

10. The method for using the disposable intravenous infusion needle device according to claim 1, characterized in that: The following steps are involved: Step 1: Pour the liquid medicine to be infused into the disposable external replacement infusion shell (1), start the universal liquid pump (11) in the disinfection treatment mechanism (9), and pump the liquid medicine into the auxiliary conduction tube (14) through the L-shaped delivery tube (12). The liquid medicine is initially filtered through the circular filter plate (15) to remove larger impurities; Step 2: The liquid medicine enters the rotary filtration system composed of the bearing seat 1 (17), the fixed threaded rod (21) and the auxiliary rotary blade (22), and further removes tiny impurities through rotation, and uses the magnetic adsorption effect of the ferrite magnet 1 (23) and the ferrite magnet 2 (24) to remove metal particles in the liquid medicine. The sterilized liquid medicine flows back to the designated area of ​​the disposable external replacement infusion shell (1) through the auxiliary conduction tube (14), and is ready for the next step of liquid medicine conduction; Step 3: Start the second universal liquid pump (27) in the liquid medicine transmission mechanism (25), and pump the sterilized liquid medicine into the second fixed installation box (26) through the L-shaped connecting pipe (28). On the outer wall of the L-shaped connecting pipe (28), the second damping rod (30) and the second buffer spring (31) work together to provide a stable liquid medicine flow and prevent the pipeline from vibrating due to the change of liquid medicine pressure. After the liquid medicine is pressurized by the second universal liquid pump (27), it is transported to the infusion needle through the transverse transport pipe (35) for intravenous injection. Step 4: During the drug liquid transmission process, the universal solenoid valve 2 (29) is responsible for controlling the flow rate of the drug liquid to ensure the stability and safety of the infusion process. The L-shaped limit clamping rod (36) is used to fix the transverse delivery tube (35) and the auxiliary transmission tube (14) to prevent them from shifting or falling off due to external force. Step 5: While the liquid medicine is being conducted, the liquid impurity removal mechanism (37) starts to work, filtering and removing the residual liquid medicine in the disposable external replacement infusion housing (1) through the partition plate (6), the filter screen 1 (7) and the filter screen 2 (8) in the circular protective cover (5). The partition plate (6) separates the liquid medicine into two layers, the upper and lower layers, which are finely filtered through the filter screen 1 (7) and the filter screen 2 (8) respectively, to ensure that the liquid medicine that finally enters the human body is pure and free of impurities.

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