Assembled multi-layer precision filtering infusion apparatus

Abstract

The utility model relates to the technical field of infusion apparatuses, in particular to an assembly type multi-layer precision filtering infusion apparatus which comprises a dropper body, a dropper cap and a first-layer filtering membrane, the top of the dropper body is detachably provided with the dropper cap, and the first-layer filtering membrane is installed in an inner cavity of the dropper cap in a hanging mode. The bottom wall of the first-layer filter membrane is provided with a second-layer filter membrane in an attached manner, the first-layer filter membrane and the second-layer filter membrane are distributed in a concave arc shape, the first-layer filter membrane comprises a pressed membrane edge covering part, a nuclear pore homogeneous membrane, a ventilation groove and a guide pattern, and the nuclear pore homogeneous membrane is arranged at the lower part of the pressed membrane edge covering part; the utility model solves the problems that in the prior art, a drip cup in an infusion apparatus simply plays roles in displaying the dripping speed and exhausting air for the first time, the function is single, for liquid medicine needing to be filtered precisely, an additional filtering piece needs to be arranged in a hose channel, the dripping and draining efficiency can be influenced, the cost is high, and an additional filtering element needs to be manufactured.

Description

Technical Field

[0001] The utility model relates to the technical field of infusion sets, in particular to an assembled multi-layer precision filtering infusion set. Background Art

[0002] An infusion set is a relatively common medical consumable. After sterilization treatment, a channel between the vein and the drug solution 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 drug filter, a flow rate regulator, a drip pot, a bottle stopper piercer, and an air filter. Some infusion sets also have injection parts, drug adding ports, etc. Among them, the intravenous drip pot is the second-to-last structure of a disposable infusion set (counting from top to bottom). Its function is to display the drip rate and the first exhaust. Some can also be used to add drugs in an emergency.

[0003] The drip pots in existing infusion sets simply display the dripping rate and the first exhaust effect, and their functions are relatively simple. For liquid medicines that require precise filtration, additional filters need to be installed in the hose channel, which will affect the dripping efficiency and is costly, and additional filter elements need to be manufactured.

[0004] Therefore, in view of this, the existing structure and deficiencies are studied and improved, and an assembled multi-layer precision filtration infusion set is proposed, in order to achieve a more practical purpose. Utility Model Content

[0005] The purpose of the utility model is to provide an assembled multi-layer precision filtering infusion set 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: an assembled multi-layer precision filtration infusion device, comprising a dropper body, a dropper cap and a first layer of filter membrane, the dropper cap is detachably installed on the top of the dropper body, the first layer of filter membrane is suspended and installed in the inner cavity of the dropper cap, and the second layer of filter membrane is attached and installed on the bottom wall of the first layer of filter membrane, the first layer of filter membrane and the second layer of filter membrane are both distributed in a concave arc shape, the first layer of filter membrane comprises a film pressing edge portion, a nuclear pore homogeneous membrane, a breathable groove and a guide pattern, the lower part of the film pressing edge portion is provided with a nuclear pore homogeneous membrane, the inner upper end of the film pressing edge portion is evenly provided with breathable grooves, the surface of the nuclear pore homogeneous membrane is provided with guide patterns, the bottom of the inner wall of the dropper cap is provided with a limited inner convex edge, and the top of the outer wall of the dropper cap is provided with a sunscreen film.

[0007] Furthermore, a lower Luer interface end is provided at the bottom of the dropper body, and a dropper notch is provided at the top of the dropper body, an upper Luer interface end is provided at the top of the dropper cap, and a dropper cap notch is provided at the bottom of the dropper cap.

[0008] Furthermore, the dropper body forms a detachable structure through the dropper notch and the dropper cap, and the sizes of the dropper notch and the dropper cap notch match each other.

[0009] Furthermore, the dropper body is interlocked with the dropper cap through the limiting inner convex edge.

[0010] Furthermore, the positions of the sunscreen film and the first layer of filter membrane cooperate with each other.

[0011] Furthermore, the nuclear pore homogenizing membrane is connected to the dropper body by plastic bonding through the film-wrapped edge portion.

[0012] Furthermore, the first filter membrane layer and the second filter membrane layer are bonded to each other.

[0013] The utility model provides an assembled multi-layer precision filtering infusion set, which has the following beneficial effects:

[0014] 1. The utility model adopts an upper and lower separation structure, so that the entire infusion dropper can be disassembled and installed, which is more convenient when used, and different dropper caps can be selected for adaptation and installation according to different infusion filtration requirements.

[0015] 2. The utility model adopts a double-layer filter membrane combination inside the filter mode, which utilizes the good hydrophilicity, chemical stability and inertness of the nuclear pore homogenous membrane and cooperates with the filter membrane pore size that meets the requirements to meet the requirements of precision infusion filtration;

[0016] The filter membrane adopts a concave spherical structure to reduce dripping and splashing, allowing it to drip in a concentrated manner after filtration, while still meeting the basic demand for displaying dripping speed, and ensuring exhaust effect through ventilation grooves.

[0017] 3. In the utility model, a sunscreen film is attached to the outer wall of the dropper cap. The position of the sunscreen film matches the filter membrane, which can protect the filter membrane. On the premise of extending the service life and filtering accuracy of the filter membrane, it can also not affect the observation of the internal condition of the dropper. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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:

[0019] Figure 1 This is a schematic diagram of the internal cross-sectional structure of an assembled multi-layer precision filtering infusion set of the utility model;

[0020] Figure 2This is a schematic diagram of the internal cross-sectional structure of a dropper cap of an assembled multi-layer precision filtering infusion device of the utility model;

[0021] Figure 3 The utility model is a schematic diagram of the internal cross-sectional structure of the first layer of filter membrane of an assembled multi-layer precision filtering infusion set.

[0022] In the figure: 1. dropper body; 101. lower Luer interface end; 102. dropper notch; 2. dropper cap; 201. limiting inner convex edge; 202. upper Luer interface end; 203. dropper cap notch; 204. sunscreen film; 3. first layer of filter membrane; 301. film pressing edge; 302. nuclear pore homogenizing membrane; 303. air permeable groove; 304. guide pattern; 4. second layer of filter membrane. 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 1-3The utility model provides a technical solution: an assembled multi-layer precision filtration infusion device, comprising a dropper body 1, a dropper cap 2 and a first layer of filter membrane 3, the top of the dropper body 1 is detachably mounted with a dropper cap 2, the inner cavity of the dropper cap 2 is suspended with a first layer of filter membrane 3, and the bottom wall of the first layer of filter membrane 3 is attached with a second layer of filter membrane 4, the first layer of filter membrane 3 and the second layer of filter membrane 4 are both distributed in a concave arc shape, the first layer of filter membrane 3 comprises a film-pressing edge portion 301, a nuclear pore homogeneous membrane 302, a breathable groove 303 and a guide pattern 304, the lower part of the film-pressing edge portion 301 is provided with a nuclear pore homogeneous membrane 302, The inner upper end of the film-pressing edge portion 301 is evenly provided with a venting groove 303, the surface of the nuclear pore homogeneous membrane 302 is provided with a guide pattern 304, the inner wall bottom of the dropper cap 2 is provided with a limited inner convex edge 201, and the outer wall top of the dropper cap 2 is provided with a sunscreen film 204; the bottom of the dropper body 1 is provided with a lower Luer interface end 101, and the top of the dropper body 1 is provided with a dropper notch 102, the top of the dropper cap 2 is provided with an upper Luer interface end 202, and the bottom of the dropper cap 2 is provided with a dropper cap notch 203; the dropper body 1 is detachable through the dropper notch 102 and the dropper cap 2, and the dropper notch 203 is provided. The sizes of 102 and the notch 203 of the dropper cap match each other; the dropper body 1 is interlocked with the dropper cap 2 through the limiting inner convex edge 201; the sunscreen film 204 and the first layer of filter membrane 3 are matched with each other; the nuclear pore homogenizing membrane 302 is connected to the dropper body 1 through the film-pressing edge 301 to form a plastic-connected integrated connection; the first layer of filter membrane 3 and the second layer of filter membrane 4 fit each other; the upper and lower separated structure is adopted, so that the entire infusion dropper supports disassembly and installation, which is more convenient when used, and different dropper caps 2 can be selected for adaptation and installation according to different infusion filtration requirements; the dropper cap 2 in the filtering mode adopts a double-layer filtration inside The membranes are used in combination, utilizing the excellent hydrophilicity, chemical stability and inertness of the nuclear pore homogeneous membrane 302, and cooperating with the required filter membrane pore size to meet the needs of precision infusion filtration; the filter membrane adopts a concave spherical structure in structure, which can reduce dripping and splashing, so that it can drip in a concentrated manner after filtration, and still meet the basic demand for displaying the dripping rate, and the ventilation effect is ensured by the air permeable groove 303; a sunscreen film 204 is attached to the outer wall of the dropper cap 2, and the position of the sunscreen film 204 cooperates with the filter membrane, which can protect the filter membrane, and on the premise of extending the service life of the filter membrane and the filtration accuracy, it can also not affect the observation of the internal condition of the dropper.

[0025] Working principle: For this type of assembled multi-layer precision filtration infusion set, first assemble the dropper body 1 in the infusion set, insert the dropper cap 2 into the top dropper notch 102 of the dropper body 1, so that the dropper notch 102 and the dropper cap notch 203 are interlocked and fixed with each other, and then install the normal assembly process to assemble and fix the entire infusion set. The liquid enters from the upper Luer interface end 202 of the dropper cap 2 and flows out from the lower Luer interface end 101 of the dropper body 1. When the dropper body 1 is transmitting, First, it drips from the upper Luer interface end 202 onto the first layer of filter membrane 3 for filtration, and then passes through the second layer of filter membrane 4 to complete the precision filtration operation. In each group of filter membranes, the drug solution will fall into the spherical nuclear pore homogeneous membrane 302, gather toward the lowest end along the arc surface of the nuclear pore homogeneous membrane 302, and then complete the filtration and pass downward. The gas carried during dripping will gather at the top of the dropper body 1, and the gas at the bottom of the filter membrane will pass through the air permeable groove 303 of the first layer of filter membrane 3 and move upward to meet the basic exhaust operation.

[0026] 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. An assembled multi-layer precision filtering infusion set, comprising a dropper body (1), a dropper cap (2) and a first layer of filtering membrane (3), characterized in that: The top of the dropper body (1) is detachably mounted with a dropper cap (2), the inner cavity of the dropper cap (2) is suspended with a first layer of filter membrane (3), and the bottom wall of the first layer of filter membrane (3) is attached with a second layer of filter membrane (4), the first layer of filter membrane (3) and the second layer of filter membrane (4) are both distributed in a concave arc shape, and the first layer of filter membrane (3) comprises a film-wrapped edge portion (301), a nuclear pore homogenizing membrane (302), and a venting groove (303). ) and guide lines (304), a core hole homogeneous membrane (302) is arranged at the lower part of the pressed film wrapping part (301), a ventilation groove (303) is evenly opened at the inner upper end of the pressed film wrapping part (301), a guide line (304) is arranged on the surface of the core hole homogeneous membrane (302), a limited inner convex edge (201) is arranged at the bottom of the inner wall of the dropper cap (2), and a sunscreen film (204) is arranged at the top of the outer wall of the dropper cap (2).

2. The assembled multi-layer precision filtration infusion set according to claim 1, characterized in that: The bottom of the dropper body (1) is provided with a lower Luer interface end (101), and the top of the dropper body (1) is provided with a dropper notch (102), the top of the dropper cap (2) is provided with an upper Luer interface end (202), and the bottom of the dropper cap (2) is provided with a dropper cap notch (203).

3. The assembled multi-layer precision filtration infusion set according to claim 2, characterized in that: The dropper body (1) forms a detachable structure through the dropper notch (102) and the dropper cap (2), and the sizes of the dropper notch (102) and the dropper cap notch (203) match each other.

4. The assembled multi-layer precision filtration infusion set according to claim 2, characterized in that: The dropper body (1) and the dropper cap (2) are interlocked with each other via the limiting inner convex edge (201).

5. The assembled multi-layer precision filtration infusion set according to claim 1, characterized in that: The positions of the sunscreen film (204) and the first layer of filter membrane (3) cooperate with each other.

6. The assembled multi-layer precision filtration infusion set according to claim 1, characterized in that: The core hole homogenizing membrane (302) is connected to the dropper body (1) by plastic welding through the film-pressing edge portion (301).

7. The assembled multi-layer precision filtration infusion set according to claim 1, characterized in that: The first layer of filter membrane (3) and the second layer of filter membrane (4) are bonded to each other.

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