Filtering mechanism for infusion apparatus supporting disassembly and replacement

Abstract

The utility model relates to the technical field of infusion apparatuses, in particular to a filter mechanism for an infusion apparatus supporting disassembly and replacement, which comprises a plastic cylinder, a first guide plate is arranged at the top of an inner cavity of the plastic cylinder, a limiting plate is arranged at the bottom of the first guide plate, and a filtrate groove is formed in the bottom of the limiting plate. A second flow guide plate is arranged at the bottom of the limiting plate and the bottom of an inner cavity of the plastic barrel, a bacterial fiber membrane is clamped to the inner side of the first flow guide plate, a nuclear pore homogeneous membrane is clamped to the upper portion of the limiting plate, a polyether sulfone membrane is clamped to the inner side of the second flow guide plate, and a sealing cover is detachably installed on one side of the outer portion of the plastic barrel. A plastic threaded bolt is arranged in the middle of the inner side of the sealing cover; the problems that in the prior art, a filtering mechanism in an existing filter achieves the basic filtering effect through a built-in structure of a filtering infusion apparatus, but the filtering effect is poor and is inconvenient to disassemble and replace, and precipitates can affect the filtering effect are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of infusion sets, in particular to a filter mechanism for an infusion set which supports disassembly and replacement. Background Art

[0002] An infusion set is a relatively common medical consumable. After sterilization treatment, a channel between the vein and the medicine is established for intravenous infusion. When the infusion set is performing infusion, the bottle stopper piercer needs to pierce the infusion bottle to form an infusion channel. The infusion set is generally composed of eight parts connected together, including an intravenous needle or injection needle, a needle cap, an infusion hose, a medicine filter, a flow rate regulator, a drip pot, a bottle stopper piercer, and an air filter.

[0003] The filtering mechanism in the existing filter achieves basic filtering effect through the built-in structure of the filtering infusion set, but the filtering effect is poor, and it is not convenient to disassemble and replace, and the precipitate will affect the filtering effect.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a filter mechanism for an infusion set that supports disassembly and replacement is proposed, in order to achieve a more practical purpose. Utility Model Content

[0005] The utility model aims to provide a filter mechanism for an infusion set that supports disassembly and replacement, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a filtering mechanism for an infusion set that supports disassembly and replacement, comprising a plastic barrel, a first guide plate is arranged at the top of the inner cavity of the plastic barrel, and a limiting plate is arranged at the bottom of the first guide plate, a filtrate groove is opened at the bottom of the limiting plate, a second guide plate is arranged at the bottom of the limiting plate and the bottom of the inner cavity of the plastic barrel, a bacterial fiber membrane is clamped on the inner side of the first guide plate, a nuclear pore homogenizing membrane is clamped on the upper part of the limiting plate, a polyethersulfone membrane is clamped on the inner side of the second guide plate, a sealing cover is detachably installed on one side of the outer side of the plastic barrel, a plastic threaded bolt is arranged at the middle part of the inner side of the sealing cover, and a mounting sleeve rod is arranged at the middle part of the inner side of the plastic barrel.

[0007] Furthermore, the upper and lower ends of the plastic tube are connected with upper and lower Luer joints.

[0008] Furthermore, a sealing gasket ring is attached to the connection between the plastic tube and the sealing cover.

[0009] Furthermore, the sealing cover is detachable through the plastic threaded bolt and the mounting sleeve rod, and the mounting sleeve rod and the plastic cylinder are injection-molded integrated structures.

[0010] Furthermore, the plastic tube and the sealing cover combination are distributed in a flat cylindrical shape.

[0011] Furthermore, the nuclear pore homogeneous membrane and the mounting sleeve rod are sleeved and connected, and the bacterial fiber membrane and the nuclear pore homogeneous membrane are interlocked.

[0012] Furthermore, the filtrate tank and the polyethersulfone membrane cooperate with each other in upper and lower positions.

[0013] The utility model provides a filter mechanism for an infusion set that supports disassembly and replacement, and has the following beneficial effects:

[0014] 1. The utility model adopts an independent detachable structure, and realizes the upper and lower transportation connection of the liquid medicine through the specified upper and lower Luer joints, which is convenient for connection with the infusion hose interface. The whole filtering mechanism adopts a flat cylindrical structure, occupies a small volume, and is easy to carry and transport.

[0015] 2. The utility model adopts a hierarchical structure inside the filtering mechanism, and forms a multi-level filtering layer through bacterial fiber membrane, nuclear pore homogenous membrane, and polyethersulfone membrane, and each group of filtering membranes is limited by the outer limiting plate to control the flow direction of the liquid medicine;

[0016] The concave-convex interlocking mode of the bacterial fiber membrane and the nuclear pore homogeneous membrane is convenient for assembly during production, and on the other hand, it makes the interlocking between the filter membranes more stable and less likely to fall off, and it can also make the drug solution flow more smoothly, with high reliability and stability of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The disclosure of the present invention will become easier to understand with reference to the accompanying drawings. It is easy for those skilled in the art to understand that these drawings are only used to illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention. In the drawings:

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a filter mechanism for an infusion set that supports disassembly and replacement according to the utility model;

[0019] Figure 2 This is a schematic diagram of the internal three-dimensional structure of a filter mechanism for an infusion set that supports disassembly and replacement according to the utility model;

[0020] Figure 3 This is a schematic diagram of a three-dimensional structure of a plastic tube of a filter mechanism for an infusion set that supports disassembly and replacement according to the utility model;

[0021] Figure 4 The utility model is a bottom-up stereoscopic structural schematic diagram of a plastic tube of a filter mechanism for an infusion set that supports disassembly and replacement.

[0022] In the figure: 1. plastic cylinder; 101. first guide plate; 102. limit plate; 103. second guide plate; 2. sealing cover; 3. sealing gasket ring; 4. upper and lower Luer joints; 5. plastic threaded bolt; 6. bacterial fiber membrane; 7. nuclear pore homogenous membrane; 8. polyethersulfone membrane; 9. mounting sleeve rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 The utility model provides a technical solution: a filter mechanism for an infusion set that supports disassembly and replacement, comprising a plastic tube 1, a first guide plate 101 is arranged on the top of the inner cavity of the plastic tube 1, and a limit plate 102 is arranged on the bottom of the first guide plate 101, a filtrate groove 104 is opened at the bottom of the limit plate 102, a second guide plate 103 is arranged at the bottom of the limit plate 102 and the bottom of the inner cavity of the plastic tube 1, a bacterial fiber membrane 6 is clamped on the inner side of the first guide plate 101, a nuclear pore homogenous membrane 7 is clamped on the upper part of the limit plate 102, a polyethersulfone membrane 8 is clamped on the inner side of the second guide plate 103, and a sealing member 8 is detachably installed on one side of the outer side of the plastic tube 1 The sealing cover 2 is provided with a plastic threaded bolt 5 at the middle of the inner side of the sealing cover 2, and a mounting sleeve rod 9 is provided at the middle of the inner side of the plastic cylinder 1; the upper and lower ends of the plastic cylinder 1 are connected with Luer upper and lower joints 4; a sealing gasket ring 3 is attached to the connection between the plastic cylinder 1 and the sealing cover 2; the sealing cover 2 is formed into a detachable structure through the plastic threaded bolt 5 and the mounting sleeve rod 9, and the mounting sleeve rod 9 and the plastic cylinder 1 are injection molded into an integrated structure; the plastic cylinder 1 and the sealing cover 2 are combined and distributed in a flat cylindrical shape; the nuclear pore homogeneous membrane 7 and the mounting sleeve rod 9 are sleeved and connected, and the bacterial fiber membrane 6 and the nuclear pore homogeneous membrane 7 are interlocked; the filtrate tank 104 and the polyethersulfone membrane 8 are matched with each other in the upper and lower positions;

[0025] An independent split structure is adopted, and the upper and lower Luer joints 4 are provided to realize the upper and lower transportation connection of the liquid medicine, which is convenient for connection with the infusion hose interface. The whole filtering mechanism adopts a flat cylindrical structure, occupies a small volume, and is easy to carry and transport.

[0026] The filter mechanism adopts a hierarchical structure inside, and a multi-level filter layer is formed by the bacterial fiber membrane 6, the nuclear pore homogenous membrane 7, and the polyethersulfone membrane 8, and each group of filter membranes is limited by the outer limiting plate to control the flow direction of the liquid medicine;

[0027] The concave-convex fitting mode of the bacterial fiber membrane 6 and the nuclear pore homogenous membrane 7 is convenient for assembly during production, and makes the fitting between the filter membranes more stable and less likely to fall off, and also makes the liquid medicine flow more smoothly, with high reliability and stability of the mechanism;

[0028] The liquid medicine will pass through the first guide plate 101 from the top, gradually contact the bacterial fiber membrane 6 for primary filtration treatment, and the filtered liquid medicine will follow the guidance of the first guide plate 101 and enter the nuclear pore homogenizing membrane 7 for filtration, and the filtered liquid medicine will enter the final filter element from the bottom filtrate tank 104 for treatment;

[0029] The plastic cylinder 1 and the sealing cover 2 adopt a combined structure, and the connection is fixed by a plastic threaded bolt 5 and a mounting sleeve rod 9, so that it is more convenient to assemble them during production.

[0030] Working principle: For this type of infusion set that supports disassembly and replacement, the filter mechanism is first installed at the interface of the filter hose through the corresponding upper and lower Luer joints 4 at the upper and lower ends. The interface of the filter hose and the needle hose can be selected for installation. The liquid is input from the top interface, passes through the first guide plate 101 at the top, and gradually contacts the bacterial fiber membrane 6 for initial filtration treatment. Through its porous structure, it can effectively filter and block harmful substances. In addition, the bacterial fiber membrane 6 also has a good antibacterial effect, which can inhibit the growth of bacteria in the surrounding environment by releasing antibacterial substances. The liquid medicine filtered by the bacterial fiber membrane 6 will follow the guidance of the first guide plate 101 and enter the nuclear pore homogeneous membrane 7 for filtration. The internal micropores of the nuclear pore homogeneous membrane are sponge-like maze structures, which can support repeated washing, have good adaptability, and can meet deep filtration. The filtered liquid medicine will enter the final filter element from the bottom filtrate tank 104 for treatment, and finally flow out from the bottom outlet to continue the infusion operation.

[0031] The above description is only a specific implementation method of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be thought of by any technician familiar with the field within the technical scope disclosed by the utility model without creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. A filter mechanism for an infusion set that supports disassembly and replacement, comprising a plastic tube (1), characterized in that: A first guide plate (101) is arranged at the top of the inner cavity of the plastic cylinder (1), and a limit plate (102) is arranged at the bottom of the first guide plate (101), a filtrate groove (104) is provided at the bottom of the limit plate (102), a second guide plate (103) is arranged at the bottom of the limit plate (102) and the bottom of the inner cavity of the plastic cylinder (1), a bacterial fiber membrane (6) is clamped on the inner side of the first guide plate (101), a nuclear pore homogenizing membrane (7) is clamped on the upper part of the limit plate (102), a polyethersulfone membrane (8) is clamped on the inner side of the second guide plate (103), a sealing cover (2) is detachably mounted on one side of the outer side of the plastic cylinder (1), a plastic threaded bolt (5) is arranged at the inner middle part of the sealing cover (2), and a mounting sleeve rod (9) is arranged at the inner middle part of the plastic cylinder (1).

2. A filter mechanism for an infusion set that supports disassembly and replacement according to claim 1, characterized in that: The upper and lower ends of the plastic cylinder (1) are connected to upper and lower Luer joints (4).

3. The filter mechanism for an infusion set that supports disassembly and replacement according to claim 1, characterized in that: A sealing gasket ring (3) is attached to the connection between the plastic cylinder (1) and the sealing cover (2).

4. The filter mechanism for an infusion set that supports disassembly and replacement according to claim 1, characterized in that: The sealing cover (2) forms a detachable structure through a plastic threaded bolt (5) and a mounting sleeve rod (9), and the mounting sleeve rod (9) and the plastic cylinder (1) are an injection-molded integrated structure.

5. The filter mechanism for an infusion set that supports disassembly and replacement according to claim 1, characterized in that: The plastic cylinder (1) and the sealing cover (2) are combined to be distributed in a flat cylindrical shape.

6. The filter mechanism for an infusion set that supports disassembly and replacement according to claim 1, characterized in that: The nuclear pore homogeneous membrane (7) and the mounting sleeve rod (9) are sleeved and connected, and the bacterial fiber membrane (6) and the nuclear pore homogeneous membrane (7) are interlocked.

7. The filter mechanism for an infusion set that supports disassembly and replacement according to claim 1, characterized in that: The filtrate tank (104) and the polyethersulfone membrane (8) are matched with each other in upper and lower positions.

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