Disposable precision filtering infusion apparatus

Abstract

The utility model is applicable to the technical field of medical instruments, and provides a disposable precise filtering infusion apparatus, which comprises an infusion tube, a bottle stopper puncture outfit, a drip chamber and a vein needle, the upper end of the infusion tube is fixedly connected with the bottle stopper puncture outfit, and the lower end of the infusion tube is fixedly connected with the vein needle. The infusion apparatus comprises an infusion tube, a drip chamber and a flow regulator are arranged on the infusion tube in a matched mode, and the infusion apparatus is characterized in that a liquid medicine filtering bin is further arranged on the infusion tube in a matched mode, the liquid medicine filtering bin is communicated with the infusion tube, a conical hopper is fixedly connected to the inner bottom end of the liquid medicine filtering bin, and the diameter of the lower end of the conical hopper is larger than the inner diameter of the infusion tube. A plurality of filtering holes which are uniformly distributed are formed in the conical hopper, a liquid medicine filtering membrane is fixedly arranged on the inner wall of the conical hopper, a backflow pipe is fixedly connected to the side wall of the liquid medicine filtering bin, and a temporary storage bottle is fixedly connected to the other end of the backflow pipe. The filter has the advantages of effectively filtering insoluble particles and preventing the insoluble particles from blocking the filter membrane.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a disposable precision filter infusion set. Background Technology

[0002] An infusion set is a common medical consumable. After sterilization, it establishes a channel between the vein and the medication for intravenous infusion.

[0003] However, traditional infusion sets often pose various risks during infusion, such as infusion reactions, most of which are caused by insoluble microparticles. These microparticles may originate from multiple sources, including the infusion bag, needle, and drug preparations. Once inside the body, they can irritate and damage the inner walls of blood vessels, leading to clinical symptoms such as phlebitis and vascular embolism, and in severe cases, even threatening the patient's life.

[0004] Therefore, in view of the above situation, there is an urgent need to develop a disposable precision filtration infusion set to overcome the shortcomings in current practical applications. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide a disposable precision filtration infusion set, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A disposable precision filtration infusion set includes an infusion tubing, a stopper puncturist, a drip chamber, and an intravenous needle. The stopper puncturist is fixedly connected to the upper end of the infusion tubing, and the intravenous needle is fixedly connected to the lower end of the infusion tubing. A drip chamber and a flow regulator are fitted onto the infusion tubing. The infusion tubing also features a drug solution filtration chamber, which is connected to the infusion tubing. A conical funnel is fixedly connected to the bottom of the drug solution filtration chamber, and the lower diameter of the conical funnel is larger than the inner diameter of the infusion tubing. Multiple evenly distributed filter holes are formed on the conical funnel, and a drug solution filtration membrane is fixedly fitted onto the inner wall of each conical funnel. A reflux tube is fixedly connected to the side wall of the drug solution filtration chamber, and a buffer bottle is fixedly connected to the other end of the reflux tube.

[0008] A further technical solution involves a trapezoidal cross-section for the drug solution filtration chamber.

[0009] A further technical solution is to use a polyethersulfone membrane or a fiber membrane for filtering the drug solution.

[0010] In a further technical solution, all filter holes are tilted.

[0011] A further technical solution involves an inner ring groove at the bottom of the drug solution filtration chamber, with an adsorption ring plate fixedly connected inside the inner ring groove. The adsorption ring plate is made of a high-molecular adsorption resin material.

[0012] A further technical solution is that a reversing ring block is fixedly connected to the bottom of the drug filtration chamber, and the reversing ring block is located inside the conical hopper. The inner diameter of the reversing ring block is equal to the inner diameter of the infusion tube, and the hypotenuse of the cross-section of the reversing ring block is arc-shaped.

[0013] In summary, the embodiments of this utility model have the following beneficial effects compared with the prior art:

[0014] The medication enters the medication filtration chamber through the infusion tube, and then enters the infusion tube below the medication filtration chamber through the filter holes on the conical funnel. The medication filtration membrane filters out insoluble particles and air bubbles in the medication, thereby preventing insoluble particles from entering the body and causing damage to the inner wall of blood vessels.

[0015] Part of the liquid medicine passing through the filter holes reaches the side of the reversing ring block, impacts the reversing ring block, and then flows towards the inner wall of the filter holes under the reverse action of the reversing ring block, colliding with the liquid medicine flowing into the conical hopper through the filter holes, causing the liquid medicine to become turbulent. This causes the particulate impurities on the outer wall of the conical hopper to move and be adsorbed by the adsorption ring plate, which can effectively prevent the accumulation of insoluble particles on the outer wall of the conical hopper, and thus effectively prevent insoluble particles from clogging the liquid medicine filter membrane on the filter holes.

[0016] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a cross-sectional three-dimensional structural diagram of the present invention;

[0019] Figure 3 This utility model Figure 2 A magnified three-dimensional structural diagram at point A in the middle.

[0020] In the diagram: 1. Infusion tubing; 2. Bottle stopper puncturist; 3. Drip funnel; 4. Intravenous needle; 5. Drug solution filter chamber; 6. Return tubing; 7. Buffer bottle; 8. Inner ring groove; 9. Adsorption ring plate; 10. Conical hopper; 11. Filter hole; 12. Reversing ring block. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0022] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0023] like Figure 1-3 As shown in the figure, this utility model embodiment provides a disposable precision filtering infusion set, including an infusion tube 1, a bottle stopper puncturist 2, a drip chamber 3, and an intravenous needle 4. The bottle stopper puncturist 2 is fixedly connected to the upper end of the infusion tube 1, and the intravenous needle 4 is fixedly connected to the lower end of the infusion tube 1. The drip chamber 3 and a flow regulator (not shown in the figure) are provided on the infusion tube 1. A drug solution filter chamber 5 is also provided on the infusion tube 1, and the drug solution filter chamber 5 is connected to the infusion tube 1. A conical funnel 10 is fixedly connected to the bottom of the drug solution filter chamber 5, and the lower diameter of the conical funnel 10 is larger than the inner diameter of the infusion tube 1. Multiple evenly distributed filter holes 11 are opened on the conical funnel 10. A drug solution filter membrane (not shown in the figure) is fixedly provided on the inner wall of the conical funnel 10. A return pipe 6 is fixedly connected to the side wall of the drug solution filter chamber 5, and a buffer bottle 7 is fixedly connected to the other end of the return pipe 6.

[0024] It can be understood that the infusion tubing 1, bottle stopper puncture device 2, drip chamber 3, intravenous needle 4, and flow regulator all adopt existing technologies, and will not be described in detail here.

[0025] Furthermore, the cross-section of the liquid filtration chamber 5 is trapezoidal.

[0026] Furthermore, the drug solution filtration membrane is a polyethersulfone membrane or a fiber membrane, which is used to filter insoluble particles and bubbles in the drug solution.

[0027] Furthermore, all filter holes 11 are inclined, which facilitates the passage of the medicine through the filter holes 11.

[0028] Furthermore, an inner ring groove 8 is provided at the bottom of the drug solution filtration chamber 5, and an adsorption ring plate 9 is fixedly connected in the inner ring groove 8. The adsorption ring plate 9 is made of high molecular adsorption resin material and is used to adsorb some insoluble particles.

[0029] Furthermore, a reversing ring block 12 is fixedly connected to the bottom of the medicine filtration chamber 5, and the reversing ring block 12 is located inside the conical bucket 10. The inner diameter of the reversing ring block 12 is equal to the inner diameter of the infusion tube 1. The inclined side of the cross section of the reversing ring block 12 is arc-shaped. Part of the medicine liquid that passes through the filter hole 11 reaches the side of the reversing ring block 12, impacts the reversing ring block 12, and then flows to the inner wall of the filter hole 11 under the reverse action of the reversing ring block 12. It collides with the medicine liquid that flows into the conical bucket 10 through the filter hole 11, causing the medicine liquid to become turbulent. This causes the particulate impurities on the outer wall of the conical bucket 10 to move and be adsorbed by the adsorption ring plate 9.

[0030] Specifically, the medicine enters the medicine filtration chamber 5 through the infusion tube 1, and then enters the infusion tube 1 below the medicine filtration chamber 5 through the filter holes 11 on the conical funnel 10. The medicine filtration membrane filters out insoluble particles and air bubbles in the medicine. Some of the medicine that passes through the filter holes 11 reaches the side of the reversing ring block 12, impacts the reversing ring block 12, and then flows towards the inner wall of the filter holes 11 under the reverse action of the reversing ring block 12. It collides with the medicine that flows into the conical funnel 10 through the filter holes 11, causing the medicine to become turbulent. This causes the particulate impurities on the outer wall of the conical funnel 10 to move and be adsorbed by the adsorption ring plate 9, which can effectively prevent the accumulation of insoluble particles on the outer wall of the conical funnel 10, and thus effectively prevent insoluble particles from clogging the medicine filtration membrane on the filter holes 11. The return tube 6 and the buffer bottle 7 effectively prevent the medicine from flowing back, thus preventing the insoluble particles generated by the medicine filtration membrane from flowing into the infusion tube 1 above the medicine filtration chamber 5.

[0031] The working principle of this utility model is as follows: the medicine enters the drip chamber 3 through the bottle stopper puncture device 2 along the infusion tube 1, and then continues to flow into the medicine filtration chamber 5 through the infusion tube 1. Subsequently, it enters the lower side of the infusion tube 1 through the filter hole 11 on the conical funnel 10, and then reaches the intravenous needle 4. During this process, when the medicine passes through the filter hole 11, insoluble particles are intercepted on the outer wall of the filter hole 11. Part of the medicine that passes through the filter hole 11 reaches the side of the reversing ring block 12, impacts the reversing ring block 12, and then flows to the inner wall of the filter hole 11 under the reverse action of the reversing ring block 12, colliding with the medicine that flows into the conical funnel 10 through the filter hole 11, causing the medicine to become turbulent. This causes the particulate impurities on the outer wall of the conical funnel 10 to move and be adsorbed by the adsorption ring plate 9.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A disposable precision filtration infusion set, comprising an infusion tubing (1), a stopper puncturist (2), a drip chamber (3), and an intravenous needle (4), wherein the stopper puncturist (2) is fixedly connected to the upper end of the infusion tubing (1), and the intravenous needle (4) is fixedly connected to the lower end of the infusion tubing (1), and the drip chamber (3) and a flow regulator are fitted onto the infusion tubing (1), characterized in that, The infusion tube (1) is also equipped with a drug solution filter chamber (5), and the drug solution filter chamber (5) is connected to the infusion tube (1). A conical funnel (10) is fixedly connected to the bottom of the drug solution filter chamber (5), and the diameter of the lower end of the conical funnel (10) is larger than the inner diameter of the infusion tube (1). Multiple evenly distributed filter holes (11) are opened on the conical funnel (10). A drug solution filter membrane is fixedly installed on the inner wall of the conical funnel (10). A return pipe (6) is fixedly connected to the side wall of the drug solution filter chamber (5), and a buffer bottle (7) is fixedly connected to the other end of the return pipe (6).

2. The disposable precision filtration infusion set according to claim 1, characterized in that, The cross-section of the liquid filtration chamber (5) is trapezoidal.

3. The disposable precision filtration infusion set according to claim 1, characterized in that, The drug solution filtration membrane is made of polyethersulfone or fiber membrane.

4. The disposable precision filtration infusion set according to claim 1, characterized in that, All filter holes (11) are tilted.

5. The disposable precision filtration infusion set according to claim 2, characterized in that, The bottom of the liquid filtration chamber (5) is provided with an inner ring groove (8), and an adsorption ring plate (9) is fixedly connected in the inner ring groove (8). The adsorption ring plate (9) is made of high molecular adsorption resin material.

6. The disposable precision filtration infusion set according to claim 1, characterized in that, A reversing ring block (12) is fixedly connected to the bottom of the drug filtration chamber (5), and the reversing ring block (12) is located inside the conical bucket (10). The inner diameter of the reversing ring block (12) is equal to the inner diameter of the infusion tube (1), and the hypotenuse of the cross section of the reversing ring block (12) is arc-shaped.

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