A portable light shielding device for an infusion apparatus and an infusion apparatus

Abstract

The utility model discloses a portable shading device and transfusion device for transfusion device belongs to transfusion device technical field. The shading device includes the drip tube shading shell and transfusion pipe shading subassembly, and the drip tube shading shell is by two half -shells of swing joint and is made up of pieced together, and forms the inner chamber of adapting with the appearance of drip tube after piecing together, and the transfusion pipe shading subassembly is set up in the drip tube shading shell outside and is detachably connected, including annular storage box, the shading film of pullablely accomodated in the storage box and the cover of setting up the traction cover on the storage box, and one end of shading film is fixed in the storage box, and the other end is fixed in the traction cover, and the shading film has the accomodation state of folding and containing in the storage cavity and the unfolded state of extending along the transfusion hose and covering in its outside, and the traction cover is covered in the storage cavity open end under the accomodation state, and the traction cover extends to the connector and is fixedly matched with it under the unfolded state, and the device has the advantages of convenient to use and accomodate, and the assembly is quick, and the shading is reliable.

Description

Technical Field

[0001] This utility model belongs to the field of infusion set technology, specifically relating to a portable light-shielding device for infusion sets and an infusion set. Background Technology

[0002] Infusion sets are among the most commonly used medical devices in clinical practice, used to continuously and stably deliver medications into the patient's body. A typical infusion set includes a stopper, a Murphy drip chamber, an infusion tubing, a flow regulator, and an intravenous infusion needle. The Murphy drip chamber and infusion tubing are usually made of transparent material to allow healthcare professionals to observe the drip rate and flow of the medication. However, a significant number of drugs are photosensitized. If exposed to light during infusion, they may undergo photolysis, oxidation, or polymerization reactions, leading to reduced efficacy or even the formation of toxic byproducts, affecting treatment outcomes and patient safety. Therefore, such photosensitive drugs must be infused under light-protected conditions.

[0003] In existing technologies, there are two main methods for light-shielding infusion. One method involves adding a light-shielding agent to the infusion tubing material to create an integrated light-shielding infusion set. For example, Chinese patent CN202277572U discloses a novel light-shielding infusion set, in which the infusion tubing and ventilation tubing are made of light-shielding material, and the upper end of the Murphy drip tube is fitted with a sliding Murphy drip tube cap. This type of product has reliable light-shielding effect, but the cost is relatively high, and hospitals need to keep both ordinary infusion sets and light-shielding infusion sets in stock, increasing consumable management costs. The other method involves covering the outside of the transparent infusion set with a light-shielding cover or light-shielding cloth. For example, Chinese patent CN217448595U discloses a light-shielding sleeve for infusion sets, which forms a sleeve structure by covering the infusion set with a shielding strip. This method can be temporarily combined with conventional infusion sets, but the storage and retrieval of its light-shielding components when not in use are not convenient, and the compatibility between the light-shielding layer and the various components of the infusion set needs improvement. Therefore, there is an urgent need to improve existing technologies to provide a light-shielding device that can be used with conventional transparent infusion sets, provides reliable light protection, and is easy to use and store. Utility Model Content

[0004] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, this utility model provides a portable light-shielding device for an infusion set, the infusion set including a dropper, an infusion tubing connected to the lower end of the dropper, and a connector disposed at the end of the infusion tubing, the light-shielding device including: The light-shielding outer shell of the dropper is composed of two movably connected half-shells joined together, forming an inner cavity for accommodating the dropper, the inner cavity being adapted to the shape of the dropper; and An infusion tube light-shielding assembly is fitted over the outside of the drip tube light-shielding shell and detachably connected to the drip tube light-shielding shell. The infusion tube light-shielding assembly includes an annular storage box, a light-shielding film that can be pulled out and stored in the storage box, and a traction cover on the storage box. The storage box has an annular storage cavity. One end of the light-shielding film is fixed to the storage box and the other end is fixed to the traction cover. The light-shielding film has a folded state that is housed within the storage cavity, and an unfolded state that extends along the length of the infusion tubing and covers the outside of the infusion tubing. In the retracted state, the traction cover is fixedly closed to the opening end of the storage cavity; in the unfolded state, the traction cover extends to the connector and is fixedly engaged with the connector.

[0005] Preferably, one end of each of the two half-shells is provided with an external thread. After the two half-shells are assembled, the two external threaded portions are connected circumferentially to form an external threaded connecting section. The storage box has a through mounting hole for the dropper light-shielding shell to pass through. The inner wall of the mounting hole is provided with an internal thread that matches the external threaded connecting section. The infusion tube light-shielding assembly is detachably connected to the outside of the dropper light-shielding shell through the engagement of the external threaded connecting section and the internal thread.

[0006] Preferably, one side of the two half-shells is hinged together by a hinge structure, and the other side of the two half-shells is connected in an openable and closable manner by a snap-locking structure.

[0007] Preferably, the traction cover has a latching part on the side facing the storage box, and the storage box has a locking part that matches the latching part. The traction cover is detachably closed onto the storage box by the cooperation of the latching part and the locking part.

[0008] Preferably, the traction cover has an annular groove on the side opposite to the storage box. The shape of the annular groove is adapted to the shape of the connector. The annular groove is used for the connector to be inserted and engaged in the unfolded state.

[0009] Preferably, the stretchable length of the light-shielding film is greater than the length of the infusion tubing.

[0010] Preferably, the light-shielding shell of the dropper is made of a rigid light-shielding material, and the light-shielding film is made of a flexible light-shielding material.

[0011] Secondly, this utility model provides an infusion set, including a dropper, an infusion tubing connected to the lower end of the dropper, and a connector disposed at the end of the infusion tubing, and also includes a portable light-shielding device for the infusion set as described above. The light-shielding outer shell of the dropper is fitted over the outside of the dropper, the light-shielding component of the infusion tube is fitted over the outside of the light-shielding outer shell of the dropper and is detachably connected to the light-shielding outer shell of the dropper, the light-shielding film covers the outside of the infusion tubing in the unfolded state, and the traction cap is fixedly fitted to the connector.

[0012] This utility model discloses a portable light-shielding device and infusion set for use with infusion sets. Its core feature lies in the ability to quickly wrap the drip tube portion while the infusion set is fully assembled, thanks to the split-part structure of the drip tube light-shielding shell, eliminating the need to slip it on from the drip tube end. By folding and storing the light-shielding film within the annular storage cavity of the storage box, the light-shielding component and the drip tube light-shielding shell are integrated into a single unit when not in use, making it convenient to access and less prone to loss. The threaded connection between the infusion tube light-shielding component and the drip tube light-shielding shell secures the two halves of the shell, preventing accidental opening of the drip tube light-shielding shell. The interlocking engagement between the annular groove on the traction cap and the end connector of the infusion tubing provides reliable end fixation for the unfolded light-shielding film, preventing slippage during infusion. Compared to existing technologies, this utility model offers significant advantages such as compact structure, convenient access, quick assembly, and reliable light protection. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure of a portable light-shielding device for an infusion set provided in an embodiment of this utility model (the light-shielding film is in a stored state).

[0014] Figure 2 A cross-sectional schematic diagram of a portable light-shielding device for an infusion set provided in an embodiment of this utility model.

[0015] Figure 3 A schematic diagram of the structure of the light-shielding shell of the dropper provided in the embodiment of this utility model (two half shells in the open state).

[0016] Figure 4 A cross-sectional structural diagram of a portable light-shielding device for an infusion set, provided in an embodiment of the present invention, with the light-shielding film in a retracted state.

[0017] Figure 5 This is a schematic diagram of the overall structure of a portable light-shielding device for an infusion set, provided in an embodiment of the present invention, with the light-shielding film in a semi-expanded state.

[0018] Figure 6 This is a partial cross-sectional view of a portable light-shielding device for an infusion set, provided in an embodiment of the present invention, with the light-shielding film fully extended.

[0019] The reference numerals in the attached figures are explained as follows: 1. Dropper light-shielding outer shell; 11. Half shell; 2. Storage box; 21. Storage cavity; 24. Locking part; 3. Light-shielding film; 4. Traction cap; 42. Buckle part; 43. Annular groove; 5. Bottle stopper puncture device; 6. Dropper; 7. Infusion tubing; 8. Connector. Detailed Implementation

[0020] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] To address the problems in related technologies, embodiments of this application provide a portable light-shielding device for infusion sets, such as... Figures 1 to 6 As shown, the infusion set includes a dropper 6, an infusion tubing 7 connected to the lower end of the dropper 6, and a connector 8 located at the end of the infusion tubing 7. The light-shielding device includes a dropper light-shielding shell 1 and an infusion tubing light-shielding assembly.

[0023] like Figure 3 As shown, the light-shielding outer shell 1 of the dropper is composed of two movably connected half-shells 11 joined together. The two half-shells 11, when joined, form an inner cavity for accommodating the dropper 6, which is adapted to the shape of the dropper 6. Specifically, the dropper 6 is a component of the infusion set with a large variation in diameter, typically cylindrical. The shape of the inner cavity of the light-shielding outer shell 1 matches the outer contour of the dropper 6, allowing the two half-shells 11 to tightly wrap around the outer periphery of the dropper 6 after joining. The movable connection of the two half-shells 11 can be a hinge, a sliding connection, or other structural forms that allow for relative opening and closing.

[0024] The infusion tubing light-shielding assembly is fitted over the outside of the drip tube light-shielding housing 1 and detachably connected to it. The light-shielding assembly includes an annular storage box 2, a light-shielding film 3 that can be pulled out and stored within the storage box 2, and a traction cap 4 covering the storage box 2. The storage box 2 has an annular storage cavity 21, with one end of the light-shielding film 3 fixed to the storage box 2 and the other end fixed to the traction cap 4. The design of the annular storage cavity 21 allows the light-shielding film 3 to be folded and stored within it in a wraparound manner, making full use of the annular space and resulting in a compact structure.

[0025] The light-shielding film 3 has a folded state that houses it within the storage cavity 21, and an unfolded state that extends along the length of the infusion tubing 7 and covers its exterior. In the folded state, the traction cap 4 securely closes to the opening of the storage cavity 21, sealing the light-shielding film 3 within the storage cavity 21 and preventing it from being exposed to the outside and becoming contaminated or damaged. Figure 1 As shown. In the unfolded state, the traction cap 4 extends to the connector 8 and is fixedly engaged with the connector 8, keeping the light-shielding film 3 unfolded and wrapping around the infusion tubing 7, as shown. Figure 6 As shown.

[0026] When using the device, first open the two halves 11 of the dropper light-shielding outer shell 1 and slip them over the outside of the dropper 6 of the infusion set from the side. Then, assemble the two halves 11 together. Next, insert the infusion tube light-shielding assembly from the top of the dropper 6 and tighten it onto the outside of the dropper light-shielding outer shell 1. Finally, pull the traction cap 4 to remove the light-shielding film 3 from the storage box 2 and unfold it along the infusion tubing 7. Fix the traction cap 4 to the connector 8 to complete the light-shielding assembly. When not in use, the light-shielding film 3 is folded and stored in the storage box 2. The entire device can be stored as a whole or kept on standby with the infusion set.

[0027] Using the above technical solution, the split structure of the dropper light-shielding shell 1 allows the operator to wrap the dropper 6 from the side without having to slip it on from the end of the dropper 6. Assembly can still be completed even when the infusion set is connected to the bottle stopper puncture device 5. At the same time, the storage box 2 allows the light-shielding film 3 to be properly stored when not in use. When needed, it can be pulled out simply by pulling the pull cap 4, making the operation convenient.

[0028] This invention further proposes that each of the two half-shells 11 has an external thread at one end. After the two half-shells 11 are assembled, the two external threaded portions are connected circumferentially to form an external threaded connecting section. The storage box 2 has a through mounting hole through which the dropper light-shielding shell 1 passes. The inner wall of the mounting hole is provided with an internal thread that matches the external threaded connecting section. The infusion tube light-shielding assembly is detachably connected to the outside of the dropper light-shielding shell 1 through the engagement of the external threaded connecting section and the internal thread.

[0029] Specifically, each of the two half-shells 11 has a semi-circular or arc-shaped external thread at one end (i.e., the lower end) near the infusion tubing 7. When the two half-shells 11 are joined together, the external threads on the two half-shells 11 are aligned and connected circumferentially to form a complete external thread connection section. The mounting through hole of the storage box 2 is fitted onto the outside of the dropper light-shielding shell 1 from top to bottom, and the internal thread of the inner wall of the mounting through hole is threadedly engaged with the external thread connection section. When the infusion tubing light-shielding assembly is tightened onto the dropper light-shielding shell 1, the threaded engagement between the internal thread of the storage box 2 and the external thread connection section of the dropper light-shielding shell 1 tightly binds the two half-shells 11 together, preventing the two half-shells 11 from opening accidentally. In other words, the infusion tubing light-shielding assembly, while being fitted onto the outside of the dropper light-shielding shell 1, also serves as a locking component to lock the assembled state of the dropper light-shielding shell 1, achieving a "two-in-one" functional integration.

[0030] In one specific implementation, the external threaded connection section is located on the lower outer periphery of the dropper light-shielding shell 1. The mounting through hole of the storage box 2 is inserted from the upper end of the dropper light-shielding shell 1 and screwed to the lower external threaded connection section. During the tightening process, the thread engagement force between the internal thread of the storage box 2 and the external threaded connection section firmly fixes the storage box 2 to the dropper light-shielding shell 1, while simultaneously pulling the lower ends of the two half-shells 11 tight and closing them.

[0031] As an alternative embodiment, those skilled in the art can also use snap-fit ​​connection, magnetic connection or other detachable connection methods to replace threaded connection, as long as the light-shielding component of the infusion tube and the light-shielding shell 1 of the dropper can be detachably fixed.

[0032] In this design, the light-shielding component of the infusion tube is fixed to the outside of the light-shielding shell 1 of the drip tube by a threaded connection. The threaded connection has the advantages of reliable connection and simple operation. Moreover, the radial constraint force generated during the tightening process can effectively lock the two half shells 11, preventing them from opening accidentally and ensuring the structural stability of the light-shielding shell 1 of the drip tube during use.

[0033] The present invention further proposes that one side of the two half-shells 11 is hinged together by a hinge structure, and the other side of the two half-shells 11 is connected in an openable and closable manner by a snap-locking structure.

[0034] The hinge structure is located on the same side of the two half-shells 11, allowing them to rotate around the hinge axis to open or close like a door. The snap-locking structure is located on the other side of the two half-shells 11; when closed, the snap-locking structure secures that side of the two half-shells 11 together. The cooperation between the hinge structure and the snap-locking structure makes opening and closing the two half-shells 11 convenient and quick. In the stored state, the two half-shells 11 remain closed by the snap-locking structure, facilitating overall storage; in use, opening the snap-locking structure allows the two half-shells 11 to be flipped open and fitted over the dropper 6 from the side.

[0035] In this design, the combination of the hinge structure and the snap-locking structure makes the opening and closing of the dropper's light-shielding shell 1 simple and reliable. Medical staff can complete the opening and closing actions with one hand, which improves the convenience of clinical operation.

[0036] The present invention further proposes that the traction cover 4 is provided with a buckle part 42 on the side facing the storage box 2, and the storage box 2 is provided with a locking part 24 adapted to the buckle part 42. The traction cover 4 is detachably covered on the storage box 2 through the cooperation of the buckle part 42 and the locking part 24.

[0037] Specifically, when the light-shielding film 3 is in the retracted state, the pull cover 4 is placed over the opening of the storage cavity 21 of the storage box 2, and the latching part 42 and the engaging part 24 engage with each other, fixing the pull cover 4 to the storage box 2 and preventing the light-shielding film 3 from falling out of the storage cavity 21. When it is necessary to remove the light-shielding film 3, the operator pulls the pull cover 4 outward to disengage the latching part 42 from the engaging part 24, and the light-shielding film 3 can be removed from the storage cavity 21. The latching part 42 and the engaging part 24 can be connected using conventional quick-release connection methods in the art, such as elastic latches or magnetic latches.

[0038] In this design, the cooperation between the latching part 42 and the engaging part 24 allows the traction cover 4 to reliably close onto the storage box 2 in the storage state, preventing the light-shielding film 3 from accidentally coming off; and it can be easily opened when needed, making operation convenient.

[0039] The present invention further proposes that an annular groove 43 is provided on the side of the traction cover 4 away from the storage box 2. The shape of the annular groove 43 is adapted to the shape of the connector 8. The annular groove 43 is used for the connector 8 to be inserted and snapped in the unfolded state.

[0040] Specifically, the connector 8 at the end of the infusion tubing 7 is typically a conical or cylindrical joint used to connect the intravenous infusion needle. An annular groove 43 is located on the outer end face of the traction cap 4, and its inner contour matches the outer contour of the connector 8. When the light-shielding film 3 extends along the infusion tubing 7 to its end, the operator pushes the traction cap 4 towards the connector 8, causing the connector 8 to embed into the annular groove 43. The traction cap 4 is then fixed to the connector 8 by the friction or clamping force between the annular groove 43 and the connector 8. In this way, the two ends of the light-shielding film 3 are fixed by the storage box 2 and the traction cap 4, respectively, while the middle portion covers the outside of the infusion tubing 7, forming a complete light-shielding path from the dropper 6 to the end of the infusion tubing 7, preventing the light-shielding film 3 from slipping or shifting along the infusion tubing 7 during infusion.

[0041] In this design, the interlocking engagement between the annular groove 43 and the connector 8 provides a reliable fixing point for the end of the light-shielding film 3, ensuring that the light-shielding film 3 remains unfolded and wrapped during infusion, resulting in a stable and reliable light-shielding effect.

[0042] This invention further proposes that the extendable length of the light-shielding film 3 is greater than the length of the infusion tubing 7. That is, the total length of the fully extended light-shielding film 3 is greater than the distance between the lower end of the drip tube 6 and the connector 8 of the infusion tubing 7, so that the light-shielding film 3 can completely cover the entire length of the infusion tubing 7 after being extended, and the traction cap 4 has sufficient slack to reach the connector 8 for fixation, avoiding the situation where the light-shielding film 3 is not long enough to cover the entire infusion tubing 7 or cannot reach the connector 8.

[0043] In this design, the stretchable length of the light-shielding film 3 is greater than the length of the infusion tubing 7, ensuring that the light-shielding film 3 can completely cover the entire length of the infusion tubing 7, achieving full-path light shading from the dropper 6 to the end of the infusion tubing 7, and eliminating light-shielding blind spots.

[0044] This invention further proposes that the light-shielding outer shell 1 of the dropper is made of a rigid light-shielding material, while the light-shielding film 3 is made of a flexible light-shielding material. The rigid light-shielding material gives the light-shielding outer shell 1 sufficient structural rigidity to resist daily impacts, handling, and slight knocks without deformation. When fitted over the dropper 6, it maintains a fixed shape, ensuring a tight fit with the outer wall of the dropper 6. Simultaneously, its structural strength is sufficient to support and protect the relatively fragile thin-walled dropper 6 from damage caused by hand handling. The flexible light-shielding material is lightweight and adaptable, allowing for bending without tearing. It can be folded and stored in the storage cavity 21, or unfolded and wrapped around the infusion tubing 7.

[0045] In one specific implementation, the light-shielding outer shell 1 of the dropper is injection molded from dark brown or dark amber modified ABS (acrylonitrile-butadiene-styrene copolymer), incorporating special carbon black and light absorbers; alternatively, it can be injection molded from medical-grade polycarbonate (PC) plastic granules. The shell made from this material has a smooth surface, facilitating disinfection with medical alcohol, and its hardness is sufficient to withstand squeezing and impacts during daily operation. The light-shielding film 3 is a two-layer composite structure medical-grade co-extruded soft polyethylene (PE) film; alternatively, it can be a polyurethane (TPU) film. The outer layer of this film is a silver-white or milky-white high-reflectivity layer, used to reflect visible light and infrared rays from ambient lighting sources, reducing heat absorption; its inner backlight surface is laminated with a completely black light-absorbing layer, used to absorb residual light transmitted through the outer layer or incident from the infusion tubing 7. The inner and outer layers work together to ensure a blocking rate of over 99.9% for visible and ultraviolet light. The overall thickness of the film is controlled within the range of 0.05 mm to 0.08 mm, which ensures sufficient mechanical strength and light-blocking performance, while also having good flexibility, allowing it to be easily folded, compressed, and stored in the storage cavity 21 of the storage box 2.

[0046] In this design, the light-shielding outer shell 1 of the dropper is made of rigid light-shielding material to ensure the light-shielding effect and structural stability of the dropper part, while the light-shielding film 3 is made of flexible light-shielding material for easy folding, storage and stretching. The two materials each perform their respective functions and together achieve effective light-shielding of the entire light-transmitting part of the infusion set.

[0047] The working principle of this device is as follows: When not in use, the two halves 11 of the dropper light-shielding outer shell 1 are closed. The light-shielding assembly of the infusion tubing is threaded onto the outside of the dropper light-shielding outer shell 1. The light-shielding film 3 is folded and stored in the storage cavity 21 of the storage box 2. The traction cap 4 is closed onto the storage box 2 by the engagement of the snap-fit ​​part 42 and the engaging part 24. The entire light-shielding device is a compact unit that can be stored with the infusion set or separately.

[0048] When it is necessary to shield the transparent infusion set from light, the operator first unscrews the infusion tube light-shielding assembly from the dropper light-shielding shell 1, then opens the snap-locking structure of the dropper light-shielding shell 1, flips open the two half-shells 11 around the hinge structure, and places the dropper light-shielding shell 1 over the outside of the dropper 6 of the infusion set from the side, then closes the two half-shells 11. Next, the infusion tube light-shielding assembly is inserted from the upper end of the dropper 6 (on the side of the stopper puncturist 5), slides down along the dropper 6 to the external threaded connection section of the dropper light-shielding shell 1, and tightens the storage box 2 to secure it to the outside of the dropper light-shielding shell 1 via threads. After tightening, the storage box 2 simultaneously locks the lower ends of the two half-shells 11. Finally, the operator pulls the traction cover 4 outward, disengaging the latch 42 from the engaging part 24, and extracts the light-shielding film 3 from the storage chamber 21, unfolding it along the infusion tubing 7 until the traction cover 4 reaches the connector 8 at the end of the infusion tubing 7. The connector 8 is then inserted into the annular groove 43 to complete the fixation. At this point, the dropper 6 is shielded from light by the dropper light-shielding shell 1, and the infusion tubing 7 is shielded from light by the light-shielding film 3, achieving complete light shielding from the dropper 6 to the end of the infusion tubing 7.

[0049] After the infusion is completed, the operator removes the traction cap 4 from the connector 8, folds the light-shielding film 3 back into the storage chamber 21, closes the traction cap 4 onto the storage box 2, then unscrews the infusion tube light-shielding assembly from the dropper light-shielding shell 1, opens the two halves 11 of the dropper light-shielding shell 1 and removes them from the dropper 6, thus completing the disassembly. The disassembled components can be reassembled into a whole for future use.

[0050] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A portable light-shielding device for an infusion set, the infusion set comprising a dropper (6), an infusion tubing (7) connected to the lower end of the dropper (6), and a connector (8) disposed at the end of the infusion tubing (7), characterized in that, The light-shielding device includes: The light-shielding outer shell (1) of the dropper is composed of two movably connected half-shells (11) joined together. The two half-shells (11) together form an inner cavity for accommodating the dropper (6), and the inner cavity is adapted to the shape of the dropper (6); and An infusion tube light shielding assembly is fitted over the outside of the drip tube light shielding shell (1) and detachably connected to the drip tube light shielding shell (1). The infusion tube light shielding assembly includes an annular storage box (2), a light shielding film (3) that can be pulled out and stored in the storage box (2), and a traction cover (4) covering the storage box (2). The storage box (2) has an annular storage cavity (21). One end of the light shielding film (3) is fixed to the storage box (2), and the other end is fixed to the traction cover (4). The light-shielding film (3) has a folded state that is housed in the storage cavity (21), and an unfolded state that extends along the length of the infusion tubing (7) and covers the outside of the infusion tubing (7). In the stored state, the traction cover (4) is fixedly closed to the opening end of the storage cavity (21). In the unfolded state, the traction cover (4) extends to the connector (8) and is fixedly engaged with the connector (8).

2. The portable light-shielding device for an infusion set according to claim 1, characterized in that, One end of each of the two half-shells (11) is provided with an external thread. After the two half-shells (11) are assembled, the two external threaded parts are connected circumferentially to form an external threaded connection section. The storage box (2) is provided with a through mounting hole. The mounting hole allows the dropper light-shielding shell (1) to pass through. The inner wall of the mounting hole is provided with an internal thread that matches the external threaded connection section. The infusion tube light-shielding assembly is detachably connected to the outside of the dropper light-shielding shell (1) through the cooperation of the external threaded connection section and the internal thread.

3. The portable light-shielding device for an infusion set according to claim 2, characterized in that, The two half-shells (11) are hinged on one side by a hinge structure, and the other side of the two half-shells (11) are connected in an openable and closable manner by a snap-locking structure.

4. The portable light-shielding device for an infusion set according to claim 1, characterized in that, The traction cover (4) has a latching part (42) on the side facing the storage box (2), and the storage box (2) has a locking part (24) that is adapted to the latching part (42). The traction cover (4) is detachably covered on the storage box (2) by the cooperation of the latching part (42) and the locking part (24).

5. The portable light-shielding device for an infusion set according to claim 1, characterized in that, The traction cover (4) has an annular groove (43) on the side opposite to the storage box (2). The shape of the annular groove (43) is adapted to the shape of the connector (8). The annular groove (43) is used for the connector (8) to be inserted and snapped in the unfolded state.

6. The portable light-shielding device for an infusion set according to claim 1, characterized in that, The stretchable length of the light-shielding film (3) is greater than the length of the infusion tubing (7).

7. The portable light-shielding device for an infusion set according to claim 6, characterized in that, The light-shielding shell (1) of the dropper is made of rigid light-shielding material, and the light-shielding film (3) is made of flexible light-shielding material.

8. An infusion set, comprising a dropper (6), an infusion tubing (7) connected to the lower end of the dropper (6), and a connector (8) disposed at the end of the infusion tubing (7), characterized in that, It also includes a portable light-shielding device for an infusion set as described in any one of claims 1 to 7; The light-shielding shell (1) of the dropper is fitted over the outside of the dropper (6), the light-shielding assembly of the infusion tube is fitted over the outside of the light-shielding shell (1) of the dropper and is detachably connected to the light-shielding shell (1) of the dropper, the light-shielding film (3) covers the outside of the infusion tubing (7) in the unfolded state, and the traction cap (4) is fixedly fitted to the connector (8).

Images