Infusion drip chamber structure for preventing backflow

Abstract

The utility model relates to a kind of infusion drip chamber structure for preventing back bleeding, belong to medical instrument technical field.The structure includes drip chamber main body, the plug is arranged in drip chamber main body, plug material medical silica gel;The plug includes upper part and lower part, the lower part is corresponding with the taper surface of the bottom of drip chamber main body, and the upper part is hollow structure.The utility model is simple in structure and low in cost, without manual intervention, while not affecting normal infusion process, effective sealing and blocking can be carried out at low liquid level, so as to prevent infusion back bleeding phenomenon, compared with prior art has significant advantage.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to an infusion drip structure that prevents backflow of blood. Background Technology

[0002] Infusion sets are a common medical device, and intravenous infusion through infusion sets is an indispensable and important method and means of clinical treatment. When the liquid level in a traditional infusion set drops below the drip chamber, the medicine continues to flow down due to gravity. The pressure inside the blood vessel gradually exceeds the pressure inside the infusion tube, resulting in negative pressure inside the tube, which may cause the patient's blood to flow back into the infusion tube.

[0003] To address these issues, existing methods primarily involve medical staff manually shutting off the regulator or using electronic alarm devices for automatic control. However, the former is highly dependent on manual operation, while the latter is too costly, resulting in low practicality. Furthermore, due to time constraints, needles are often withdrawn when there is remaining medication, leading to significant waste and increased costs.

[0004] Therefore, a new type of infusion set is needed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an infusion drip structure that is simple in structure, low in cost, and capable of automatic blocking.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An infusion drip structure for preventing backflow of blood includes a drip body, characterized in that a plug is provided inside the drip body, and the plug is made of medical-grade silicone. The plug includes an upper part and a lower part, the lower part corresponding to the conical surface at the bottom of the dripping body, and the upper part being a hollow structure.

[0007] Furthermore, a guide vane is circumferentially arranged between the upper and lower parts, which fits against the bottom conical surface of the dripping body.

[0008] Furthermore, the lower part has a hollow structure, and the side wall of the lower part has openings for medicine liquid holes. The beneficial effects of this utility model are as follows: With its simple structure and low cost, it requires no manual intervention and can effectively seal and block the flow of fluid at low levels without affecting the normal infusion process, thereby preventing backflow of blood during infusion. At the same time, the structure shown in this application can make full use of the medication, and nurses will not withdraw the needle prematurely due to time constraints, effectively saving costs for patients, which has significant advantages over existing technologies.

[0009] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the infusion drip chamber structure for preventing backflow of blood, as shown in Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the infusion drip chamber structure for preventing backflow of blood, as shown in Embodiment 2 of this utility model.

[0011] Explanation of the symbols in the attached diagram: 1. Drip chamber body; 2. Plug; 21. Upper part; 22. Guide vane; 23. Lower part; 24. Medicine orifice; 3. Liquid surface; 4. Infusion tube. Detailed Implementation

[0012] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0013] 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.

[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other. Example 1

[0016] Please see Figure 1The infusion drip structure shown in a preferred embodiment of this application includes a drip body 1 and an infusion tube 4 connected to its bottom. A plug 2 is provided inside the drip body 1. The plug 2 is made of medical silicone with a density less than that of the drug solution. The plug 2 includes a hollow upper part 21 and a solid lower part 23, the lower part 23 corresponding to the conical surface at the bottom of the dripping body 1.

[0017] Working principle: During infusion, the plug 2 inside the drip chamber floats on the surface of the liquid due to the buoyancy of the medication, and will not affect the normal infusion process. When the infusion is about to end, as the liquid level in the drip chamber drops to the bottom of the drip chamber, the plug 2 falls under the action of gravity and the lower part 23 fits and seals against the conical surface at the bottom of the drip chamber, thereby blocking the infusion tube 4 and preventing backflow caused by excessive pressure difference. Example 2

[0018] Please see Figure 2 Based on Example 1, a guide vane 22 is circumferentially provided between the upper part 21 and the lower part 23 of the plug 2, which fits against the bottom conical surface of the dripping body 1, in order to further improve the sealing performance.

[0019] Preferably, in this embodiment, the lower part 23 of the plug 2 is also a hollow structure, and a partition is provided between the upper part 21 and the lower part 23. The side wall of the lower part 23 is provided with a medicine hole 24, which allows the medicine to flow into the lower part 23 through the medicine hole 24, thereby making the lower part 23 stable downward and further reducing material costs.

[0020] In summary, this utility model modifies existing infusion sets by setting a plug in the drip chamber to control the flow of medication, effectively preventing backflow of blood during infusion, which is a significant improvement over existing technologies.

[0021] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0022] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An infusion drip structure for preventing backflow of blood, comprising a drip body, characterized in that, The drip chamber body is equipped with a plug, which is made of medical-grade silicone. The plug includes an upper part and a lower part, the lower part corresponding to the conical surface at the bottom of the dripping body, and the upper part being a hollow structure.

2. The infusion drip structure for preventing backflow of blood as described in claim 1, characterized in that, A guide vane is circumferentially arranged between the upper and lower parts, which fits against the bottom conical surface of the dripping bucket body.

3. The infusion drip structure for preventing backflow of blood as described in claim 1, characterized in that, The lower part is a hollow structure, and the side wall of the lower part has a medicine liquid hole.

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