A pre-filled, filtered, bubble-free infusion flush line

Abstract

This utility model relates to a pre-filled, filtered, bubble-free infusion flushing tubing, comprising an infusion set tubing body, a liquid reservoir at the upper end of the tubing body, and a liquid guiding section inside the liquid reservoir, the liquid guiding section being disposed on the bottom wall of the liquid reservoir, the liquid reservoir being connected to the upper end of the infusion set tubing body through the liquid guiding section; a pre-installed tube at the upper end of the liquid reservoir, the lower end of the pre-installed tube extending into the liquid reservoir and communicating with the inner cavity of the liquid reservoir, the upper end of the pre-installed tube being connected to a needle, the lower end of the pre-installed tube being vertically aligned with the upper end of the liquid guiding section and spaced apart by a predetermined distance 'a'. With this pre-filled, filtered, bubble-free infusion flushing tubing, because the upper end of the liquid guiding section and the lower end of the pre-installed tube are aligned, saline droplets slide along the side wall of the liquid guiding section into the liquid reservoir, avoiding direct dripping onto the liquid surface and generating microbubbles. This effectively reduces the formation of microbubbles during operation and prevents them from entering the body during use, thereby reducing the risk of gas embolism in cerebral microarteries.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a pre-filled filter bubble-free infusion flushing tubing. Background Technology

[0002] In neurointerventional procedures, flushing the interventional catheter with normal saline is a crucial step to ensure the safety and effectiveness of the procedure. After successful catheter placement, a pressure bag must be connected for continuous flushing with normal saline. The purpose of continuous flushing is to maintain fluid flow within the catheter, preventing blood from entering and clotting, thereby preventing thrombosis. A pressure saline bag is typically used to ensure sufficient flushing pressure, maintaining a constant flow of fluid within the catheter.

[0003] Currently, our hospital still uses standard IV sets connected to pressurized saline bags and neurointerventional catheters in neurointerventional surgeries. During preoperative preparation, surgeons and nurses must work closely together, employing extremely careful techniques to fill the saline tubing to avoid air bubble formation. While a slow and cautious approach effectively avoids most visible air bubbles, some tiny bubbles are still difficult to completely eliminate. These bubbles can enter the arterial catheter, blocking blood flow in capillaries, easily causing insufficient blood supply to the brain, and subsequently leading to air embolism and stroke. Secondly, during the procedure, because the standard IV set is connected to a pressurized saline bag, continuous pressure causes saline to slowly leak from the vent of the IV set, gradually wetting the surgical drape area below. This leakage makes the operating area damp, affecting the integrity of the sterile barrier and increasing the risk of intraoperative infection. Therefore, these problems significantly limit the use of standard IV sets in neurointerventional surgeries and urgently require more specialized improvements. Utility Model Content

[0004] In order to solve one or more technical problems existing in the prior art, this utility model provides a pre-filled filter bubble-free infusion flushing pipeline.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A pre-filled filter bubble-free infusion flushing pipeline includes an infusion set pipeline body, a liquid reservoir at the upper end of the infusion set pipeline body, a liquid guiding part inside the liquid reservoir, the liquid guiding part being disposed on the bottom wall of the liquid reservoir, the liquid reservoir being connected to the upper end of the infusion set pipeline body through the liquid guiding part; a reserved tube is provided at the upper end of the liquid reservoir, the lower end of the reserved tube extending into the liquid reservoir and communicating with the inner cavity of the liquid reservoir, a needle being connected to the upper end of the reserved tube, the lower end of the reserved tube being arranged vertically and vertically correspondingly to the upper end of the liquid guiding part and spaced apart by a preset distance a.

[0006] The beneficial effects of this utility model are as follows: The pre-filled, filtered, bubble-free infusion flushing tubing of this utility model is suitable for flushing interventional catheters during neurointerventional surgery. By setting a fluid guide and a pre-drained tube inside the fluid reservoir, and setting a preset distance between the fluid guide and the pre-drained tube, when in use, the fluid reservoir can be filled with physiological saline first, and then an empty tube is set at the upper end of the pre-drained tube. The needle is inserted into the physiological saline bag, and the air at the empty tube on the pre-drained tube enters the fluid reservoir. During flushing, the physiological saline from the physiological saline bag drips into the fluid reservoir along the pre-drained tube. Since the upper end of the fluid guide and the lower end of the pre-drained tube are arranged correspondingly, the physiological saline droplets slide into the fluid reservoir along the side wall of the fluid guide, avoiding direct dripping onto the liquid surface and generating microbubbles. This can effectively reduce the formation of microbubbles during operation and prevent them from entering the human body during use, thereby reducing the risk of gas embolism in cerebral microarteries.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the vertical length of the droplet that is dropped into the liquid container from the lower end of the reserved tube is b, and a≥b.

[0009] Furthermore, a = b + c, where c = 0.1 mm to 3 mm.

[0010] The beneficial effect of adopting the above-mentioned further solution is that by making the preset distance slightly larger than the vertical length of the droplet, the droplet can be smoothly guided into the liquid container along the liquid guide section.

[0011] Furthermore, the liquid guiding part has a structure in which the outer diameter gradually increases from top to bottom.

[0012] The beneficial effect of adopting the above-mentioned further solution is that this liquid guiding part structure facilitates the smooth sliding of droplets.

[0013] Furthermore, the liquid guiding section has an inverted conical structure.

[0014] Furthermore, the outer wall of the liquid guiding part is a concave arc surface.

[0015] Furthermore, the liquid guiding part has a hollow structure, and the inner cavity of the hollow structure is connected to the upper end of the infusion set tubing body.

[0016] The beneficial effect of adopting the above-mentioned further solution is that the hollow liquid guiding part facilitates the connection between the inner cavity of the liquid container and the body of the infusion set tubing.

[0017] Furthermore, the liquid guiding part is made of a filter screen.

[0018] The beneficial effect of adopting the above-mentioned further solution is that the liquid guiding part is made of a filter screen, which can filter out the tiny air bubbles generated during the operation.

[0019] Furthermore, the pore size of the filter screen is 0.01–0.8 μm.

[0020] Furthermore, the infusion set tubing body is provided with a filter and a stop clamp near the lower end, with the stop clamp located below the filter.

[0021] The beneficial effect of adopting the above-mentioned further solution is that the bubbles can be further filtered by setting up a filter. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the pre-filled filter bubble-free infusion flushing pipeline of this utility model;

[0023] Figure 2 for Figure 1 Enlarged schematic diagram of the middle part of the structure.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Infusion set tubing body; 2. Liquid reservoir; 3. Liquid guide section; 4. Pre-installed tubing; 5. Needle; 6. Filter; 7. Stop clamp; 8. Adjustable stop valve. Detailed Implementation

[0026] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0027] like Figure 1 and Figure 2 As shown, a pre-filled, filtered, bubble-free infusion flushing tubing of this embodiment includes an infusion set tubing body 1. The upper end of the infusion set tubing body 1 is provided with a liquid reservoir 2. The liquid reservoir 2 is provided with a liquid guiding section 3 inside. The liquid guiding section 3 is disposed on the bottom wall of the liquid reservoir 2. The liquid reservoir 2 is connected to the upper end of the infusion set tubing body 1 through the liquid guiding section 3. The upper end of the liquid reservoir 2 is provided with a reserved tube 4. The lower end of the reserved tube 4 extends into the liquid reservoir 2 and communicates with the inner cavity of the liquid reservoir 2. The upper end of the reserved tube 4 is connected to a needle 5. The lower end of the reserved tube 4 is arranged vertically and vertically corresponding to the upper end of the liquid guiding section 3 and is spaced apart by a preset distance a.

[0028] In one optional embodiment, the vertical length of the droplet entering the liquid container 2 from the lower end of the reserved tube 4 is b, where a ≥ b.

[0029] In a preferred embodiment, a = b + c, where c = 0.1 mm to 3 mm, specifically 0.1 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 0.2 mm, 0.8 mm, 1.2 mm, 1.8 mm, 2.2 mm, and 2.8 mm. Making the preset distance slightly larger than the vertical length of the droplet allows the droplet to be smoothly guided into the liquid container along the liquid guide section.

[0030] like Figure 1 and Figure 2 As shown, in one optional embodiment, the liquid guiding part 3 has a structure in which the outer diameter gradually increases from top to bottom. This liquid guiding part structure facilitates the smooth sliding of the droplets.

[0031] Another optional embodiment is that the liquid guiding part 3 has an inverted conical structure.

[0032] Preferred, such as Figure 1 and Figure 2 As shown, the outer wall of the liquid guiding part 3 is a concave arc surface.

[0033] Specifically, in this embodiment, the liquid guiding part 3 has a hollow structure, and the inner cavity of the hollow structure is connected to the upper end of the infusion set tubing body 1. Using a hollow liquid guiding part facilitates the connection between the inner cavity of the liquid container and the infusion set tubing body.

[0034] Preferably, the liquid guiding part 3 is made of a filter screen. The use of a filter screen in the liquid guiding part can filter out tiny air bubbles generated during operation. More preferably, the pore size of the filter screen is 0.01–0.8 μm. Specifically, it is 0.01 μm, 0.05 μm, 0.1 μm, 0.15 μm, 0.2 μm, 0.25 μm, 0.3 μm, 0.35 μm, 0.4 μm, 0.45 μm, 0.5 μm, 0.55 μm, 0.6 μm, 0.65 μm, 0.7 μm, 0.75 μm, or 0.8 μm.

[0035] like Figure 1 As shown, in one specific embodiment, the infusion set tubing body 1 is provided with a filter 6 and a stop clamp 7 near its lower end, with the stop clamp 7 located below the filter 6. The infusion set tubing body 1 is also provided with an adjustable water stop valve 8. By providing the filter, air bubbles can be further filtered.

[0036] In the pre-filled filter bubble-free infusion flushing pipeline of this embodiment, the length of the infusion set pipeline body 1 is set as needed.

[0037] In this embodiment, a needle cap can be installed at the needle tip 5 to seal it and prevent leakage. A sealing cap can also be installed at the lower end of the entire infusion set tubing body 1 to prevent leakage.

[0038] This embodiment of the pre-filled, filtered, bubble-free infusion flushing tubing is pre-filled with normal saline before use to prevent air bubbles from forming during the filling process. Furthermore, a filter is added to the end of the tubing to further filter air bubbles. The tubing does not include an vent, preventing leakage of normal saline from vents when connected to pressurized infusion devices. This effectively prevents saline leakage from wetting the surgical drapes, ensuring a sterile surgical environment and reducing the risk of hospital-acquired infections. The overall design of the tubing meets high medical safety requirements.

[0039] This embodiment of the pre-filled, filter-free, bubble-free infusion flushing tubing is suitable for flushing interventional catheters during neurointerventional surgery. Except for the pre-drained tube, the entire flushing tubing is pre-filled with physiological saline. A guide section and a pre-drained tube are installed inside the fluid reservoir, with a preset distance between them. The reservoir is pre-filled with physiological saline, and an empty section is installed at the upper end of the pre-drained tube. Before use, the entire tubing is pre-filled with physiological saline, except for the empty section at the upper end of the pre-drained tube. During use, the needle is inserted into the physiological saline bag, and air from the empty section of the pre-drained tube enters the reservoir, causing the liquid level to drop to a preset position. During flushing, the physiological saline from the bag drips into the reservoir along the pre-drained tube. Because the upper end of the guide section corresponds to the lower end of the pre-drained tube, the saline droplets slide along the side wall of the guide section into the reservoir, avoiding direct dripping onto the liquid surface and generating microbubbles. This effectively reduces the formation of microbubbles during operation and prevents them from entering the body during use, thereby reducing the risk of gas embolism in cerebral microarteries.

[0040] The overall design of this embodiment is closely focused on improving the safety and ease of operation of neurointerventional surgery. It controls the generation of air bubbles at the source and ensures bubble-free infusion through a precision filtration system, which significantly improves the efficiency of the surgical procedure.

[0041] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0046] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A pre-charged, filtered, bubble-free infusion flush line, comprising: The device includes an infusion set tubing body, with a liquid reservoir at the upper end of the tubing body. The liquid reservoir has a guide section inside, located on the bottom wall of the reservoir. The liquid reservoir is connected to the upper end of the infusion set tubing body via the guide section. A pre-installed tube is located at the upper end of the liquid reservoir, with its lower end extending into the reservoir and communicating with its inner cavity. A needle is connected to the upper end of the pre-installed tube. The lower end of the pre-installed tube and the upper end of the guide section are arranged vertically and vertically, with a predetermined distance 'a' between them.

2. The pre-filled filter bubble-free infusion flushing pipeline according to claim 1, characterized in that, The vertical length of the droplet that is dropped into the liquid container from the lower end of the reserved tube is b, and a≥b.

3. The pre-filled filter bubble-free infusion flushing pipeline according to claim 2, characterized in that, The a = b + c, where c = 0.1 mm to 3 mm.

4. The pre-filled filter bubble-free infusion flushing pipeline according to claim 1, characterized in that, The liquid guiding section has a structure in which the outer diameter gradually increases from top to bottom.

5. The pre-filled filter bubble-free infusion flushing pipeline according to claim 4, characterized in that, The liquid guiding section has an inverted conical structure.

6. The pre-filled filter bubble-free infusion flushing pipeline according to claim 4, characterized in that, The outer wall of the liquid guiding part is a concave arc surface.

7. A pre-filled filter bubble-free infusion flushing pipeline according to any one of claims 1 to 6, characterized in that, The liquid guiding part has a hollow structure, and the inner cavity of the hollow structure is connected to the upper end of the infusion set tubing body.

8. A pre-filled filter bubble-free infusion flushing pipeline according to any one of claims 1 to 6, characterized in that, The liquid guiding section is made of a filter screen.

9. The pre-filled filter bubble-free infusion flushing pipeline according to claim 8, characterized in that, The filter screen has a pore size of 0.01 to 0.8 μm.

10. A pre-filled filter bubble-free infusion flushing pipeline according to any one of claims 1 to 6, characterized in that, The infusion set tubing body is equipped with a filter and a stop clamp near the lower end, with the stop clamp located below the filter.

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