An adjustable flow rate infusion set

Abstract

This utility model discloses an adjustable flow rate infusion set, relating to the field of medical device technology. It includes an infusion tubing, a stopper puncture needle, an intravenous infusion needle, a drip chamber, and a flow rate regulator. The stopper puncture needle and the intravenous infusion needle are respectively installed at both ends of the infusion tubing. A drip chamber and a flow rate regulator are sequentially arranged on the infusion tubing from the stopper puncture needle towards the intravenous infusion needle. A filter is installed on the infusion tubing between the drip chamber and the flow rate regulator. The filter includes a straight tube body, an inclined tube body, a filter screen, a limiting ring, and an end cap. Both ends of the straight tube body are connected to the infusion tubing, and an inclined tube body is provided on one side of the straight tube body. This utility model improves the safety of the infusion set by setting equally spaced anti-pressure rings on the infusion tubing. The annular structure of the anti-pressure rings can protect the infusion tubing from pressure during use, preventing infusion interruption caused by the patient or their family pressing or sitting on the tubing, thus improving the safety of the infusion set.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an adjustable flow rate infusion set. Background Technology

[0002] An infusion set, also known as an intravenous infusion device, is a medical device used to deliver medication into a patient's body via a vein. The entire infusion set mainly consists of an infusion bottle or bag, infusion tubing, regulator, drip chamber, filter, needle, and other components. The use of an infusion set requires strict adherence to aseptic operating procedures to prevent infection. Medical staff will set the infusion rate according to the doctor's orders and the patient's specific condition, and regularly check the infusion set and puncture site to ensure safe and effective infusion.

[0003] In daily use, we have found that the lower part of the infusion tubing, below the flow regulator, is often pressed or sat on by patients and caregivers without their knowledge. Because the tubing is made of soft material, it is easily deformed by pressing or sitting on it, which can lead to interruption of the infusion. This not only affects the patient's normal infusion but also easily causes backflow of blood. Therefore, the existing infusion sets are not safe enough. Utility Model Content

[0004] This invention provides an adjustable flow rate infusion set with the advantage of pressure resistance, thereby solving the problem mentioned in the background section that the infusion tubing of existing infusion sets is not pressure resistant and is unsafe to use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable flow rate infusion set, comprising an infusion tubing, a bottle stopper puncture needle, an intravenous infusion needle, a drip chamber, and a flow rate regulator. A bottle stopper puncture needle and an intravenous infusion needle are respectively installed at both ends of the infusion tubing. A drip chamber and a flow rate regulator are sequentially arranged on the infusion tubing from the bottle stopper puncture needle towards the intravenous infusion needle. A filter is installed on the infusion tubing between the drip chamber and the flow rate regulator. The filter comprises a straight tube body, an inclined tube body, a filter screen, a limiting ring, and an end cap. Both ends of the straight tube body are connected to the infusion tubing. The connection includes an inclined tube on one side of the straight tube, a filter screen cylinder inside the inclined tube, one end of the filter screen cylinder inside the straight tube abutting against a limiting ring fixedly installed inside the straight tube, and an end cap installed at the other end of the filter screen cylinder. The end cap is inserted into the opening of the inclined tube. Pressure-resistant rings are fixedly installed at equal intervals on the infusion tubing between the flow regulator and the intravenous infusion needle. The distance between two adjacent pressure-resistant rings is 4-6 cm. Each pressure-resistant ring includes an outer ring, an inner ring, and a pressure-resistant skeleton, with the pressure-resistant skeleton positioned between the outer ring and the inner ring.

[0006] As a preferred technical solution of this utility model, the compression-resistant skeleton is composed of several rods connected end to end in a zigzag shape and installed between the outer ring and the inner ring, and the compression-resistant skeleton cooperates with the outer ring and the inner ring to form several triangular support structures.

[0007] As a preferred embodiment of this utility model, the intravenous infusion needle is provided with an intravenous infusion needle protective sleeve.

[0008] As a preferred technical solution of this utility model, the bottle stopper puncture needle is provided with a bottle stopper puncture needle protective sleeve.

[0009] As a preferred embodiment of this utility model, an air inlet tube is provided on one side of the bottle stopper puncture needle.

[0010] As a preferred embodiment of this utility model, a sealing ring is provided between the end cap and the inclined tube body.

[0011] Compared with the prior art, this utility model provides an adjustable flow rate infusion set, which has the following beneficial effects:

[0012] 1. This adjustable flow rate infusion set features pressure-resistant rings spaced at equal intervals on the infusion tubing. The ring structure of these rings provides pressure protection for the infusion tubing during use, preventing infusion interruption caused by pressure from the patient or their family members pressing or sitting on the tubing, thus improving the safety of the infusion set.

[0013] 2. This adjustable flow rate infusion set, by installing a filter on the infusion tube, can filter out impurities and particles (drug crystals, bacteria) during the infusion process, preventing them from entering the human body, thereby reducing infusion reactions. Furthermore, the filtered impurities and particles will accumulate on one side of the infusion channel, reducing obstruction to the infusion and ensuring smooth infusion. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This utility model Figure 1 Schematic diagram of the structure of the intermediate compression ring;

[0016] Figure 3 This utility model Figure 1 A schematic diagram of the internal structure of the filter.

[0017] In the diagram: 1. Infusion tubing; 2. Bottle stopper puncture needle; 3. Intravenous infusion needle; 4. Drip chamber; 5. Flow regulator; 6. Filter; 601. Straight tube body; 602. Inclined tube body; 603. Filter screen; 604. Limiting ring; 605. End cap; 606. Sealing ring; 7. Pressure-resistant ring; 701. Outer ring; 702. Inner ring; 703. Pressure-resistant skeleton; 8. Air inlet tube; 9. Intravenous infusion needle protective sleeve; 10. Bottle stopper puncture needle protective sleeve. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-3 This utility model discloses an adjustable flow rate infusion set, including an infusion tube 1, a stopper puncture needle 2, an intravenous infusion needle 3, a drip chamber 4, and a flow rate regulator 5. The stopper puncture needle 2 and the intravenous infusion needle 3 are respectively installed at both ends of the infusion tube 1. The drip chamber 4 and the flow rate regulator 5 are sequentially arranged on the infusion tube 1 from the stopper puncture needle 2 towards the intravenous infusion needle 3. A filter 6 is installed on the infusion tube 1 between the drip chamber 4 and the flow rate regulator 5. The filter 6 includes a straight tube body 601, an inclined tube body 602, a filter screen 603, a limiting ring 604, and an end cap 605. Both ends of the straight tube body 601 are connected to the infusion tube 1. An inclined tube body 602 is provided on one side of the straight tube body 601. The filter screen 603 is disposed inside the inclined tube body 602. The filter screen 603 is located at... One end of the straight tube 601 abuts against the limiting ring 604 fixedly installed inside the straight tube 601. The other end of the filter screen 603 is equipped with an end cap 605, which is inserted into the port of the inclined tube 602. Pressure-resistant rings 7 are fixedly installed at equal intervals on the infusion tube 1 between the flow rate regulator 5 and the intravenous infusion needle 3. The distance between two adjacent pressure-resistant rings 7 is 4-6cm. This distance allows the infusion tube 1 to bend normally to adapt to the needs of the site environment, and also ensures that the distance is not too large, which would cause the patient or caregiver to press on the infusion tube 1 and interrupt the infusion. The pressure-resistant ring 7 includes an outer ring 701, an inner ring 702 and a pressure-resistant skeleton 703. The pressure-resistant skeleton 703 is set between the outer ring 701 and the inner ring 702.

[0020] Specifically, the compression-resistant frame 703 is composed of several rods connected end to end in a zigzag shape and installed between the outer ring 701 and the inner ring 702. The compression-resistant frame 703 cooperates with the outer ring 701 and the inner ring 702 to form several triangular support structures.

[0021] In this embodiment, the pressure-resistant skeleton 703, outer ring 701 and inner ring 702 are all made of PC material with high pressure resistance, which can withstand greater pressure without deformation. This protects the infusion tube 1 in the middle from being affected, so that the infusion can proceed normally.

[0022] Specifically, the intravenous infusion needle 3 is covered with an intravenous infusion needle protective sleeve 9.

[0023] In this embodiment, the intravenous infusion needle protective sleeve 9 can provide antibacterial protection for the intravenous infusion needle 3 and prevent the intravenous infusion needle 3 from pricking medical staff.

[0024] Specifically, the bottle stopper puncture needle 2 is covered with a bottle stopper puncture needle protective sleeve 10.

[0025] In this embodiment, the bottle stopper puncture needle protective sleeve 10 can prevent the bottle stopper puncture needle 2 from being interfered with by external bacteria and avoid the bottle stopper puncture needle 2 from being blocked by dust.

[0026] Specifically, an air inlet tube 8 is provided on one side of the bottle stopper puncture needle 2.

[0027] In this implementation scheme, the main function of the air inlet tube 8 is to regulate the air pressure inside the bottle, ensuring that the medication is smoothly dripped into the patient's body. When the medication flows out of the infusion bottle, the gas volume inside the bottle increases, and the pressure decreases. At this point, the gas pressure inside the bottle is lower than the atmospheric pressure outside the bottle, so air enters the medication bottle through the air inlet tube 8, maintaining a constant gas pressure inside the bottle, thus allowing the medication to smoothly enter the patient's vein under the influence of gravity.

[0028] Specifically, a sealing ring 606 is provided between the end cap 605 and the inclined tube body 602.

[0029] In this embodiment, the sealing ring 606 deforms and fills the gap between the end cap 605 and the inclined tube body 602 when it is squeezed, thereby achieving a sealing effect.

[0030] The working principle and usage process of this utility model are as follows: First, remove the bottle stopper puncture needle protective sleeve 10 from the bottle stopper puncture needle 2, insert the bottle stopper puncture needle 2 into the bottle stopper at the bottom of the infusion bottle, then remove the intravenous infusion needle protective sleeve 9 from the intravenous infusion needle 3, insert the intravenous infusion needle 3 into the patient's vein, and then adjust the flow rate regulator 5 to allow the liquid in the infusion bottle to be smoothly infused into the patient's body through the infusion set. When the liquid flows through the filter 6, the filter screen 603 inside the filter 6 will intercept impurities and particles in the liquid, and then collect the impurities and particles into the inclined tube 602 on one side of the straight tube 601, preventing impurities and particles from remaining in the straight tube 601 and obstructing the downward flow of the liquid. When the infusion tube 1 is squeezed during use, the pressure-resistant ring 7 will protect the infusion tube 1 from excessive pressure and deformation, thus preventing infusion blockage.

[0031] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable flow rate infusion set, comprising an infusion tubing (1), a stopper puncture needle (2), an intravenous infusion needle (3), a drip chamber (4), and a flow rate regulator (5), wherein the stopper puncture needle (2) and the intravenous infusion needle (3) are respectively installed at both ends of the infusion tubing (1), and the drip chamber (4) and the flow rate regulator (5) are sequentially arranged on the infusion tubing (1) from the stopper puncture needle (2) toward the intravenous infusion needle (3), characterized in that: A filter (6) is installed on the infusion tube (1) between the dripping bucket (4) and the flow rate regulator (5). The filter (6) includes a straight tube (601), an inclined tube (602), a filter screen (603), a limiting ring (604), and an end cap (605). Both ends of the straight tube (601) are connected to the infusion tube (1). An inclined tube (602) is provided on one side of the straight tube (601). A filter screen (603) is provided inside the inclined tube (602). One end of the filter screen (603) located inside the straight tube (601) is fixedly installed on the straight tube (601). The limiting ring (604) inside the filter cylinder (603) abuts against the filter cylinder (603). The other end of the filter cylinder (603) is equipped with an end cap (605). The end cap (605) is inserted into the port of the inclined tube (602). The infusion tube (1) between the flow rate regulator (5) and the intravenous infusion needle (3) is fixedly installed with pressure-resistant rings (7) at equal intervals. The distance between two adjacent pressure-resistant rings (7) is 4-6cm. The pressure-resistant ring (7) includes an outer ring (701), an inner ring (702) and a pressure-resistant skeleton (703). The pressure-resistant skeleton (703) is set between the outer ring (701) and the inner ring (702).

2. The adjustable flow rate infusion set according to claim 1, characterized in that: The compression-resistant frame (703) is composed of several rods connected end to end in a zigzag shape and installed between the outer ring (701) and the inner ring (702). The compression-resistant frame (703) cooperates with the outer ring (701) and the inner ring (702) to form several triangular support structures.

3. The adjustable flow rate infusion set according to claim 1, characterized in that: The intravenous infusion needle (3) is covered with an intravenous infusion needle protective sleeve (9).

4. The adjustable flow rate infusion set according to claim 1, characterized in that: The bottle stopper puncture needle (2) is covered with a bottle stopper puncture needle protective sleeve (10).

5. An adjustable flow rate infusion set according to claim 1, characterized in that: An air inlet tube (8) is provided on one side of the bottle stopper puncture needle (2).

6. The adjustable flow rate infusion set according to claim 1, characterized in that: A sealing ring (606) is provided between the end cap (605) and the inclined tube body (602).

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