Precise infusion apparatus of filter membrane adjustable double-channel liquid medicine filter

Abstract

The utility model discloses a precise infusion apparatus of a filter membrane adjustable double-channel liquid medicine filter, relates to the technical field of infusion apparatuses, and solves the problems that in the prior art, a filter membrane needs to be manually replaced according to medicine types, the operation is tedious, the efficiency is low, and the infection risk of a patient is increased. A precise infusion apparatus of a filter membrane adjustable double-channel liquid medicine filter comprises a pipeline, a bottle stopper puncture outfit is arranged at the end of the pipeline, and an intravenous infusion needle is arranged at the other end of the pipeline. An air filter, a drip chamber, a double-channel liquid medicine filter and a flow regulator are sequentially connected to the pipeline, the double-channel liquid medicine filter comprises a filter shell, a reversing valve is connected to an inlet of the filter shell, an outer layer cavity and an inner layer cavity are formed in the filter shell and correspond to the reversing valve, and the outer layer cavity is communicated with the inner layer cavity. And the outer layer cavity comprises a first outer layer cavity and a second outer layer cavity. The infusion apparatus has the advantages that the filter membrane can be replaced more conveniently in the infusion process, and the operation efficiency of medical staff is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of infusion sets, in particular to a precision infusion set with an adjustable filter membrane and a double-channel liquid medicine filter. Background Art

[0002] In clinical nursing work, especially during anesthesia, surgery, and rescue of critically ill patients, infusion sets need to be given to patients continuously. Due to factors such as physical properties and drug quality, the infused drugs need to be infused using infusion sets with different filtration precisions. Traditional infusion sets usually use filter membranes with fixed filtration precisions, which are difficult to meet the filtration requirements when infusing multiple drugs. Especially in situations where long-term uninterrupted infusion is required, medical staff need to frequently replace infusion sets, which not only increases the workload, but may also affect the continuity of patient treatment and even increase the risk of infection. Therefore, existing precision infusion sets are provided for clinical drug infusion for patients.

[0003] The current precision filtration infusion device structure is generally as described in a quick-change precision filtration infusion device disclosed in patent application number "CN202321056521.X", including an infusion tube and an rubber ring, a folding column is installed in the rubber ring, and the front, back and both sides of the top of the rubber ring are connected with hanging buckles, the bottom end of the middle of the rubber ring is connected to a hanging line, the bottom end of the hanging line is connected to a dropper, and the bottom of the dropper is connected to the infusion tube. The infusion tube and the dropper are connected. The rubber ring is made of silicone and is in a circular shape. The rubber ring can be folded through the folding column for easy storage. It can be directly pulled open when in use and folded up and thrown away after use. A filter hole is provided inside the through-hole, the pore diameter of the filter hole is 1μm, and the thickness of the dropper is 1 cm. The filter hole in the through-hole can filter small dust mixed in the outside world, and the dust from the outside is not easy to enter. However, this utility model requires manual replacement of the filter membrane according to the type of drug, which is cumbersome and inefficient. Frequent replacement of the filter membrane will also damage the sterility during the infusion process, increasing the risk of infection for patients.

[0004] Therefore, the present invention proposes a precision infusion set with a dual-channel liquid medicine filter having an adjustable filter membrane, so as to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a precision infusion set with a dual-channel drug liquid filter with an adjustable filter membrane, which is used to solve the problem in the prior art that the filter membrane needs to be manually replaced according to the type of medicine, which is cumbersome and inefficient to operate. Frequent replacement of the filter membrane will also lead to the impairment of the sterile state during the infusion process, increasing the risk of infection for patients.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A precision infusion set with a dual-channel drug liquid filter with an adjustable filter membrane, comprising a pipeline, a bottle stopper puncture device is provided at the end of the pipeline, an intravenous infusion needle is provided at the other end of the pipeline, and a protective cover is provided on the intravenous infusion needle; the pipeline is connected to an air filter, a drip bucket, a dual-channel drug liquid filter and a flow regulator in sequence along the end position, the dual-channel drug liquid filter comprises a filter housing, a reversing valve is connected at the inlet position of the filter housing, a one-way valve is provided in the reversing valve, an outer cavity and an inner cavity are provided in the filter housing corresponding to the reversing valve, the outer cavity is divided into a first outer cavity and a second outer cavity by a middle partition, the outlet of the filter housing is an infusion cavity, a first liquid membrane is provided between the first outer cavity and the infusion cavity, a second liquid membrane is provided between the second outer cavity and the infusion cavity, and a third liquid membrane is provided between the inner cavity and the infusion cavity.

[0008] By adopting the above technical solution, it is possible to make it more convenient to replace the filter membrane during the infusion process, greatly improving the operating efficiency of medical staff and avoiding the need to replace the infusion set due to different filter membrane pore sizes. The reversing valve can also replace the stop clamp to control the infusion, acting as a switch.

[0009] Furthermore, a backflow prevention plate is provided along the circumference of the infusion cavity corresponding to the first liquid film and the second liquid film, and a flow channel is opened between the backflow prevention plate and the top of the first liquid film and the second liquid film.

[0010] By adopting the above technical solution, the filtered medicinal liquid enters the infusion cavity through a flow channel opened between the anti-backflow plate and the top of the first liquid membrane and the second liquid membrane, which can leave some impurities and particles filtered out of the medicinal liquid at the bottom of the first liquid membrane and the second liquid membrane, ensuring that the medicinal liquid will not flow back.

[0011] Furthermore, the outer side wall of the first outer cavity is provided with a first atmospheric film, and the outer side wall of the second outer cavity is provided with a second atmospheric film.

[0012] By adopting the above technical solution, the air in the filter housing can be quickly discharged, and a certain amount of external air can be allowed to enter the infusion bottle / bag, thereby maintaining the pressure balance in the infusion system and maintaining a stable infusion speed.

[0013] Furthermore, a first liquid-stopping clamp is provided between the bottle stopper puncture device and the dripping funnel, and the first liquid-stopping clamp is clamped on the pipeline.

[0014] By adopting the above technical solution, the first liquid-stopping clamp can be closed to suspend the infusion and prevent the drug solution from flowing out.

[0015] Furthermore, a second liquid-stopping clamp is provided between the air filter and the bottle stopper piercer, and the second liquid-stopping clamp is clamped on the air filter.

[0016] By adopting the above technical solution, the infusion pipeline can be blocked in time to prevent air from entering the body through the infusion pipeline, thereby ensuring the safety of the medical process.

[0017] Furthermore, a rotating baffle is provided on the filter housing corresponding to the reversing valve.

[0018] By adopting the above technical solution, the rotation angle and position of the reversing valve can be adjusted more accurately.

[0019] Furthermore, the pipeline is connected to the intravenous infusion needle through an infusion connector, and the intravenous infusion needle is connected to the infusion connector through a hose.

[0020] By adopting the above technical solution, the infusion connector can prevent the drug solution from flowing back during the infusion process, and the intravenous infusion needle is connected through the hose so that the patient can move to a certain extent.

[0021] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The utility model can use the reversing valve to switch the infusion direction according to the required filtration accuracy, and realize the adjustment of 0.12μm, 0.22μm and 5μm liquid medicine filters, making it more convenient to replace the filter membrane during the infusion process, greatly improving the operating efficiency of medical staff, and avoiding the need to replace the infusion set due to different filter membrane pore sizes.

[0023] 2. The utility model can help the air in the filter housing to be quickly discharged through the first atmospheric membrane and the second atmospheric membrane, avoid the accumulation of air in the infusion device, and reduce the risk of air embolism during the infusion process. At the same time, the first atmospheric membrane and the second atmospheric membrane can also allow a certain amount of external air to enter the infusion bottle or bag, maintain the pressure balance in the infusion system, and maintain a stable infusion speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the main view of the utility model;

[0025] Figure 2 This is a schematic diagram of a dual-channel liquid medicine filter of the present invention;

[0026] Figure 3 This is a cross-sectional schematic diagram of the dual-channel liquid medicine filter of the utility model;

[0027] In the figure: 1. Air filter; 2. Bottle stopper puncture device; 3. Pipeline; 4. First stop liquid clamp; 5. Drip funnel; 6. Dual-channel liquid filter; 7. Flow regulator; 8. Hose; 9. Intravenous infusion needle; 10. Protective cover; 11. Reversing valve; 12. Filter housing; 13. First atmospheric film; 18. Second atmospheric film; 14. First liquid film; 15. Second liquid film; 19. Third liquid film; 16. Infusion cavity; 17. Second stop liquid clamp; 20. Infusion connector; 21. Rotating baffle; 22. Anti-backflow plate; 23. Flow channel; 24. First outer cavity; 25. Second outer cavity; 26. Inner cavity; 27. One-way valve. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0029] In this application, terms such as "upper," "inner," "outer," and "middle" indicate positions or locations based on those shown in the accompanying drawings. These terms are intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to specific positions, or to their construction or operation in a specific position.

[0030] like Figure 1As shown, a precision infusion set with an adjustable membrane dual-channel drug liquid filter includes a pipeline 3, with a bottle cork piercing device 2 disposed at one end of the pipeline 3 and an intravenous infusion needle 9 disposed at the other end of the pipeline 3. The intravenous infusion needle 9 is provided with a protective sleeve 10. An air filter 1, a drip chamber 5, a dual-channel drug liquid filter 6, and a flow regulator 7 are sequentially connected along the end of the pipeline 3. The pipeline 3 is connected to the intravenous infusion needle 9 via an infusion connector 20, and the intravenous infusion needle 9 is connected to the infusion connector 20 via a flexible tube 8. A first stopper clamp 4 is disposed between the bottle cork piercing device 2 and the drip chamber 5 and is clamped to the pipeline 3. A second stopper clamp 17 is disposed between the air filter 1 and the bottle cork piercing device 2 and is clamped to the air filter 1. The bottle stopper puncture instrument 2 is then inserted into the bottle stopper of the infusion bottle / bag, and the second liquid-stopping clamp 17 is opened to allow air to enter the pipeline 3. The liquid medicine passes through the air filter 1 to reach the drip chamber 5. After the drip chamber 5 is filled with liquid medicine, the first liquid-stopping clamp 4 is opened. Under the action of gravity, the liquid medicine passes through the drip chamber 5 into the dual-channel liquid medicine filter 6, where the liquid medicine is filtered. The filtered liquid medicine enters the flow regulator 7, and the flow rate of the liquid medicine can be controlled by adjusting the flow regulator 7. Finally, the liquid medicine is infused through the hose 8 and the intravenous infusion needle 9. After the infusion is completed, the second liquid-stopping clamp 17 can promptly block the infusion pipeline to prevent air from entering the body through the infusion pipeline, thereby ensuring the safety of the medical process.

[0031] like Figure 2 and Figure 3As shown, the dual-channel liquid medicine filter 6 includes a filter housing 12. A reversing valve 11 is connected to the inlet of the filter housing 12. A one-way valve 27 is disposed within the reversing valve 11. A rotating baffle 21 is provided on the filter housing 12 corresponding to the reversing valve 11. The rotating baffle 21 allows for more precise adjustment of the rotation angle and position of the reversing valve 11. An outer cavity and an inner cavity 26 are provided within the filter housing corresponding to the reversing valve 11. The outer cavity is divided into a first outer cavity 24 and a second outer cavity 25 by a central partition. The outlet of the filter housing 12 is an infusion cavity 16. A first liquid membrane 14 is provided between the first outer cavity 24 and the infusion cavity 16. A second liquid membrane 15 is provided between the second outer cavity 25 and the infusion cavity 16. A third liquid membrane 19 is provided between the inner cavity 26 and the infusion cavity 16. Furthermore, when the drug liquid passes through the dual-channel drug liquid filter 6, the reversing valve 11 can be used to switch the infusion direction according to the required filtration accuracy. The drug liquid can pass through the first outer cavity 24, through the first liquid membrane 14 (for example, 0.22 μm) and the first atmospheric membrane 13, and enter the infusion cavity 16; or the reversing valve 11 can be used to switch the infusion direction, and the drug liquid can pass through the second outer cavity 25, through the second liquid membrane 15 (for example, 5 μm), and the second atmospheric membrane 18, and enter the infusion cavity 16; or the reversing valve 11 can be used to switch the infusion direction, and the drug liquid can pass through the one-way valve 27, enter the inner cavity 26, pass through the third liquid membrane 19 (for example, 0.12 μm), the first atmospheric membrane 13, and the second atmospheric membrane 18, and enter the infusion cavity 16, thereby achieving 0.12 μm, 0.22 μm, and 5 μm drug liquid filter adjustment. Different dual-channel drug liquid filters 6 can also be selected according to usage requirements, and the first liquid membrane 14, the second liquid membrane 15, and the third liquid membrane 19 can be replaced with other filtration accuracies. It makes it more convenient to replace the filter membrane during the infusion process, greatly improves the operating efficiency of medical staff, and avoids the need to replace the infusion set due to different filter membrane pore sizes. The reversing valve 11 can also replace the stop clamp to control the infusion and play the role of a switch.

[0032] like Figure 3As shown, an anti-backflow plate 22 is provided along the circumferential side of the infusion cavity 16 corresponding to the first liquid film 14 and the second liquid film 15, and a flow channel 23 is provided between the anti-backflow plate 22 and the top of the first liquid film 14 and the second liquid film 15. Then, the filtered liquid medicine enters the infusion cavity 16 through the flow channel 23 provided between the anti-backflow plate 22 and the top of the first liquid film 14 and the second liquid film 15, which can leave the impurities and particles filtered out of some of the liquid medicine at the bottom of the first liquid film 14 and the second liquid film 15, ensuring that the liquid medicine will not flow back. The outer wall of the first outer cavity 24 is provided with a first atmospheric film 13, and the outer wall of the second outer cavity 25 is provided with a second atmospheric film 18. One side of the first atmospheric film 13 and the second atmospheric film 18 faces the outside air, and the other side is in direct contact with the liquid medicine. The atmospheric film has super water-repellent properties (i.e., it cannot be infiltrated by the liquid medicine), which can effectively prevent the liquid medicine from being contaminated by external microorganisms and maintain the purity of the liquid medicine. Furthermore, the first atmospheric membrane 13 and the second atmospheric membrane 18 can help the air in the filter housing 12 to be discharged quickly, avoid the accumulation of air in the infusion device, and reduce the risk of air embolism during the infusion process. At the same time, the first atmospheric membrane 13 and the second atmospheric membrane 18 can also allow a certain amount of external air to enter the infusion bottle / bag, maintain the pressure balance in the infusion system, and maintain a stable infusion speed.

[0033] The working process of this utility model is:

[0034] First, pierce the bottle stopper 2 into the bottle stopper of the infusion bottle / bag, and then open the second liquid stop clamp 17 to allow air to enter the pipeline 3. The medicine reaches the dripping funnel 5 through the air filter 1. After the dripping funnel 5 is filled with medicine, open the first liquid stop clamp 4. The medicine passes through the dripping funnel 5 under the action of gravity and enters the dual-channel medicine filter 6 to filter the medicine. The filtered medicine enters the flow regulator 7. The speed of the medicine can be controlled by adjusting the flow regulator 7. Finally, the medicine is infused through the hose 8 and the intravenous infusion needle 9.

[0035] When the drug liquid passes through the dual-channel drug liquid filter 6, the reversing valve 11 can be used to switch the infusion direction according to the required filtration accuracy. The drug liquid can pass through the first outer cavity 24 through the first liquid membrane 14 (for example: 0.22μm) and the first atmospheric membrane 13 to enter the infusion cavity 16; or the infusion direction is switched by the reversing valve 11, the drug liquid passes through the second outer cavity 25 through the second liquid membrane 15 (for example: 5μm) and the second atmospheric membrane 18 to enter the infusion cavity 16; or the infusion direction is switched by the reversing valve 11, the drug liquid enters the inner cavity 26 through the one-way valve 27 through the third liquid membrane 19 (for example: 0.12μm), the first atmospheric membrane 13 and the second atmospheric membrane 18 to enter the infusion cavity 16, realizing the adjustment of 0.12μm, 0.22μm and 5μm drug liquid filters. Different dual-channel liquid medicine filters 6 can be selected according to usage requirements, and the first liquid membrane 14, the second liquid membrane 15 and the third liquid membrane 19 can be replaced with other precisions, such as 0.12μm, 0.22μm, 2μm, 3μm, 5μm and 15μm.

Claims

1. A precision infusion set with an adjustable membrane dual-channel liquid medicine filter, comprising a pipeline (3), characterized in that: The end of the pipeline (3) is provided with a bottle stopper puncture device (2), and the other end of the pipeline (3) is provided with an intravenous infusion needle (9), and the intravenous infusion needle (9) is provided with a protective cover (10); the pipeline (3) is sequentially connected to an air filter (1), a drip bucket (5), a dual-channel liquid medicine filter (6) and a flow regulator (7) along the end position, and the dual-channel liquid medicine filter (6) includes a filter housing (12), and the inlet position of the filter housing (12) is connected to a reversing valve (11), and a one-way valve (27) is provided in the reversing valve (11). An outer cavity and an inner cavity (26) are provided in the filter housing corresponding to the reversing valve (11); the outer cavity is divided into a first outer cavity (24) and a second outer cavity (25) by a middle partition; the outlet of the filter housing (12) is an infusion cavity (16); a first liquid film (14) is provided between the first outer cavity (24) and the infusion cavity (16); a second liquid film (15) is provided between the second outer cavity (25) and the infusion cavity (16); and a third liquid film (19) is provided between the inner cavity (26) and the infusion cavity (16).

2. The precision infusion device with adjustable filter membrane and dual-channel liquid medicine filter according to claim 1, characterized in that: An anti-backflow plate (22) is provided along the circumferential side of the infusion cavity (16) corresponding to the first liquid film (14) and the second liquid film (15), and a flow channel (23) is provided between the anti-backflow plate (22) and the top of the first liquid film (14) and the second liquid film (15).

3. The precision infusion device with adjustable filter membrane and dual-channel liquid medicine filter according to claim 2 is characterized in that: The outer side wall of the first outer cavity (24) is provided with a first atmospheric film (13), and the outer side wall of the second outer cavity (25) is provided with a second atmospheric film (18).

4. The precision infusion device with adjustable filter membrane and dual-channel liquid medicine filter according to claim 1 is characterized in that: A first liquid-stopping clamp (4) is provided between the bottle stopper piercer (2) and the dripping funnel (5), and the first liquid-stopping clamp (4) is clamped on the pipeline (3).

5. The precision infusion device with adjustable filter membrane and dual-channel liquid medicine filter according to claim 1 is characterized in that: A second liquid-stopping clamp (17) is provided between the air filter (1) and the bottle stopper piercer (2), and the second liquid-stopping clamp (17) is clamped on the air filter (1).

6. The precision infusion device with adjustable filter membrane and dual-channel liquid medicine filter according to claim 1, characterized in that: A rotating baffle (21) is provided on the filter housing (12) corresponding to the reversing valve (11).

7. The precision infusion device with a dual-channel liquid medicine filter with adjustable filter membrane according to claim 1, characterized in that: The pipeline (3) is connected to the intravenous infusion needle (9) via an infusion connector (20), and the intravenous infusion needle (9) is connected to the infusion connector (20) via a hose (8).

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