Disposable U-shaped safety infusion apparatus capable of preventing backflow and air inflow

Abstract

According to the disposable U-shaped safety infusion set capable of preventing backflow and air inflow, infusion can be effectively stopped automatically, blood backflow can be prevented, blood vessel air inflow can be prevented, and infusion safety can be guaranteed, a bottle plug puncture head is communicated with a liquid outlet pipe, a fixing handle is installed on the bottle plug puncture head, an air inlet pipe is installed on the bottle plug puncture head, and the fixing handle and the air inlet pipe are communicated with the liquid outlet pipe. The lower portion of the liquid outlet pipe is a U-shaped portion, the other end of the U-shaped portion is communicated with a liquid storage bin with the sealed upper portion and provided with a hanging nose, the upper end face of the liquid storage bin is lower than the lower end of the bottle plug puncture head, the hanging nose is hung on the fixing handle through a hanging hook and a hanging rope, and a liquid inlet pipe is arranged on a liquid outlet in the middle of the liquid storage bin and provided with an adjuster. The automatic transfusion device is simple, novel and unique in structure, scientific and reasonable in structure, easy to produce, low in cost and convenient to use, transfusion can be automatically stopped, blood backflow can be prevented, blood vessel air inflow can be prevented, transfusion safety is ensured, cost is reduced, efficiency is improved, and good social and economic benefits are achieved.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a disposable U-shaped safety infusion set capable of preventing backflow and air inlet. Background Art

[0002] Infusion is a commonly used technical means to treat various diseases, and infusion sets (tubes) are indispensable instruments for infusion. However, due to structural problems, current infusion sets (tubes) are prone to blood reflux or air infusion into blood vessels, especially when the drug solution is completed or the needle is not removed, and even safety accidents may occur. Therefore, medical staff or family members are often required to monitor the infusion during the infusion. However, due to various reasons, the nursing staff is often absent or asleep, resulting in the drug solution not being discovered in time after the infusion is completed, and the emptying phenomenon may occur. This can still cause unsafe conditions such as blood backflow or air inflow. Although there are infusion sets (tubes) that automatically alarm or automatically stop after the infusion is completed, the structure is very complex, the cost is very high, and it is troublesome to use. It also brings an economic burden to the patient. Therefore, how to provide an infusion device with a simple structure that can automatically stop the infusion, prevent blood backflow and prevent air inflow into the blood vessels, and ensure the safety of the infusion is a technical problem that needs to be seriously addressed. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the existing technology, the purpose of the present invention is to provide a disposable U-shaped safety infusion set with anti-backflow and air intake, which can effectively solve the problem of automatically stopping infusion, preventing blood backflow, and preventing blood vessels from air intake, thereby ensuring the safety of infusion.

[0004] The technical solution solved by the utility model is a disposable U-shaped safety infusion device with anti-backflow air intake, which includes a liquid inlet tube, a liquid outlet tube, a bottle stopper puncture head, a regulator and an air inlet tube. The lower end of the bottle stopper puncture head is concentrically connected to the upper end of the liquid outlet tube. A fixed handle is installed on the side wall of the lower end of the bottle stopper puncture head. An air inlet tube is installed on the side wall of the bottle stopper puncture head at the fixed handle and is connected to the lower end of the bottle stopper puncture head. The lower part of the liquid outlet tube is a U-shaped part that opens upwards, and the upper end of the other end of the U-shaped part is connected to the lower inlet of the liquid storage tank. The liquid port is sealed and connected around the periphery, the upper part of the liquid storage tank is sealed and equipped with a hanging nose, the upper end surface of the liquid storage tank is lower than the lower end of the bottle stopper puncture head, the hanging nose hook is hung on the hook on one end of the support hanging rod, and the other end of the support hanging rod is fixed to the fixed handle at the upper end of the liquid outlet pipe. The liquid outlet in the middle of the liquid storage tank is equipped with a liquid inlet pipe that is sealed and connected around the periphery, the liquid inlet pipe is equipped with a regulator, and the lower outlet end of the liquid inlet pipe is equipped with a connector for connecting an infusion needle. The bottle stopper puncture head, the liquid outlet pipe, the U-shaped part, the liquid storage tank, the liquid inlet pipe and the infusion needle constitute an infusion channel.

[0005] The utility model has a simple structure, is novel and unique, has a scientific and reasonable structure, is easy to produce, has a low cost, is easy to use, can automatically stop infusion, can prevent blood backflow, and prevent blood vessels from air intake, ensures infusion safety, reduces costs and increases efficiency, and has good social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 This is a structural diagram of the utility model.

[0007] Figure 2 This is a state diagram in which the liquid in the infusion bottle has not been completely dripped out when the utility model is used.

[0008] Figure 3 This is a diagram showing the state in which the liquid in the infusion bottle of the present invention has been dripped out. DETAILED DESCRIPTION

[0009] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings and specific circumstances.

[0010] Depend on Figure 1 As shown, the utility model is a disposable U-shaped safety infusion device with anti-backflow air intake, comprising a liquid inlet tube 8, a liquid outlet tube 5, a bottle stopper puncture head 1, a regulator 6 and an air inlet tube 3. The lower end of the bottle stopper puncture head 1 is concentrically connected to the upper end of the liquid outlet tube 5 as an integral structure. A fixed handle 2 is installed on the side wall of the lower end of the bottle stopper puncture head 1. An air inlet tube 3 is installed on the side wall of the bottle stopper puncture head 1 at the fixed handle 2 and is connected to the lower end of the bottle stopper puncture head 1. The lower part of the liquid outlet tube 5 is a U-shaped portion 5a that opens upward. The upper end of the other end of the U-shaped portion 5a is sealed and connected to the lower liquid inlet 7b of the liquid storage tank 7. The upper part of the liquid storage tank 7 is sealed and equipped with a hanging nose 7a. The upper end surface of the liquid storage tank 7 is lower than the lower end part of the bottle stopper puncture head 1. The hanging nose 7a is hooked on the hook 4a on one end of the support hanging rod 4. The other end of the support hanging rod 4 is fixed to the fixed handle 2 at the upper end of the liquid outlet pipe 5. The liquid outlet 7c in the middle of the liquid storage tank 7 is equipped with a liquid inlet pipe 8 that is connected to the peripheral seal. The liquid inlet pipe 8 is equipped with a regulator 6. The lower outlet end of the liquid inlet pipe 8 is equipped with a connector 9a for connecting an infusion needle 9. The bottle stopper puncture head 1, the liquid outlet pipe 5, the U-shaped portion 5a, the liquid storage tank 7, the liquid inlet pipe 8 and the infusion needle 9 constitute an infusion channel.

[0011] In order to ensure the use effect and convenience, a protective sealing cover 3a is installed on the inlet end of the air inlet pipe 3.

[0012] The regulator 6 is a hose flow regulator or a drip rate regulator (known technology).

[0013] The liquid outlet pipe 5 and the liquid inlet pipe 8 are hollow long hoses made of medical plastic with a circular cross section.

[0014] The liquid storage tank 7 is a hollow circular or square structure with one end closed and made of medical plastic. It is injection-molded into an integral structure with the liquid outlet pipe 5 and the liquid inlet pipe 8.

[0015] It should be particularly noted that the other end of the support hanging rod 4 is fixed to the fixed handle 2 at the upper end of the liquid outlet pipe 5. The fixing method can be selected in different ways according to the material of the connecting rod, such as hot pressing, thermoplasticizing, clamping together or fixing together with screws, which are all well-known technologies. In the embodiment, the support hanging rod 4 is fixed to the fixed handle 2 by screws (not shown in the figure).

[0016] It can be clearly seen from the above that the innovation of the present invention lies in the provision of a liquid storage bin 7, and the U-shaped portion 5a at the lower part of the liquid outlet pipe 5 constitutes an upward U-shaped structure, which can effectively realize the automatic stop of the infusion, prevent blood reflux or gas entry, and ensure the safety of infusion. At the same time, the structure adopts a liquid storage bin with a closed upper end and a liquid inlet at the lower end, and the liquid outlet is arranged in the middle of the liquid storage bin, so as to ensure that after the liquid in the infusion bottle is infused, when the liquid level of the U-shaped portion reaches equilibrium with the liquid level A in the liquid storage bin 7, a good liquid sealing effect is played, effectively preventing blood backflow and air intake, and ensuring the safety of infusion. This is completely different from the existing technology and has substantial characteristics and technical progress.

[0017] The use of this utility model is as follows: Figure 2 As shown, when in use, first place the infusion bottle filled with liquid medicine with its mouth facing downward on an infusion stand (known technology, infusion stand not shown in the figure), then pass the bottle stopper puncture head 1 through the bottle stopper of the infusion bottle and place it in the infusion bottle, then remove the hanging nose 7a on the upper part of the liquid storage bin 7 from the hook 4a, so that the liquid storage bin 7 hangs naturally, and adjust the liquid level in the liquid storage bin to above the liquid outlet 7c to ensure that the liquid outlet 7c can be liquid-sealed, and then the infusion can be performed according to conventional infusion operations. When the infusion needle 9 pierces the vein and the dripping speed is adjusted by adjusting the regulator 6, the liquid level is made to exceed the upper part of the liquid outlet 7c (it is best that the liquid occupies 2 / 3 of the volume of the liquid storage bin 7), then the hook 4a is hung on the hanging nose 7a, ensuring that the part of the liquid storage bin 7 communicating with the lower part of the liquid outlet pipe 5 is U-shaped, Figure 2 As shown, it can be clearly seen that during the infusion, due to the upward opening U-shape formed between the lower portion of the liquid outlet pipe 5 and the liquid storage tank 7, and the liquid outlet of the liquid storage tank 7 is opened in the middle of the liquid storage tank and is connected to the upper inlet of the liquid inlet pipe 8, the liquid does not fill the liquid storage tank 7. Therefore, a certain space is left above the liquid level A in the liquid storage tank 7, and air is stored in the space. When the liquid in the infusion bottle 10 drips out, the liquid level B entering the liquid outlet pipe 5 is on the same horizontal plane as the liquid level A in the liquid storage tank 7, and the air pressure reaches equilibrium, as shown in FIG. Figure 3As shown, when the liquid in the liquid storage bin stops flowing out, the infusion will be automatically stopped. At this time, the liquid retained in the liquid storage bin 7 plays a liquid sealing role on the liquid inlet tube 8, which can effectively prevent blood from flowing back (backflow) or air from entering the human body, ensuring the safety of infusion; due to the effect of the fixed handle 2, it can be effectively and firmly fixed on the bottle stopper of the infusion bottle to prevent the tube from falling off, thereby ensuring the safety of infusion. When it is necessary to observe the dripping speed during the infusion process, it is only necessary to remove the liquid storage bin 7 from the hook 4a and let it droop naturally, just like a normal infusion device can observe the dripping speed of the liquid, and then hang the liquid storage bin 7 on the hook 4a through the hanging nose 7a, forming a U-shaped structure, which is very convenient to use.

[0018] It can be seen from the above structure that even if the needle cannot be removed or the medicine cannot be changed immediately after the liquid is infused, the utility model will automatically stop the infusion work. The patient or medical staff do not need to keep an eye on the infusion tube at all times and can rest during the infusion process. After the liquid medicine is infused, the device can automatically stop the infusion work and the medicine can be changed or the needle can be removed. This does not affect the patient's rest and reduces the workload of medical staff, bringing great convenience and safety to the infusion. It is a major innovation in infusion equipment and has good social and economic benefits.

Claims

1. A disposable U-shaped safety infusion device with anti-backflow air inlet, comprising a liquid inlet tube (8), a liquid outlet tube (5), a bottle stopper puncture head (1), a regulator (6) and an air inlet tube (3), wherein the lower end of the bottle stopper puncture head (1) is connected concentrically with the upper end of the liquid outlet tube (5) as an integral structure, a fixed handle (2) is installed on the side wall of the lower end of the bottle stopper puncture head (1), and an air inlet tube (3) is installed on the side wall of the bottle stopper puncture head (1) at the fixed handle (2) and is connected to the lower end of the bottle stopper puncture head (1). The invention is characterized in that: The lower portion of the liquid outlet pipe (5) is a U-shaped portion (5a) that opens upward. The upper end of the U-shaped portion (5a) is sealed and connected to the lower liquid inlet (7b) of the liquid storage tank (7). The upper portion of the liquid storage tank (7) is sealed and equipped with a hanging nose (7a). The upper end surface of the liquid storage tank (7) is lower than the lower end of the bottle stopper piercing head (1). The hanging nose (7a) is hooked on the hook (4a) on one end of the support hanging rod (4). The other end of the support hanging rod (4) is fixed to A liquid inlet pipe (8) is mounted on the fixed handle (2) at the upper end of the liquid outlet pipe (5) and the liquid outlet (7c) in the middle of the liquid storage tank (7). The liquid inlet pipe (8) is provided with a regulator (6). A connector (9a) for connecting to an infusion needle (9) is mounted on the lower outlet end of the liquid inlet pipe (8). The bottle stopper puncture head (1), the liquid outlet pipe (5), the U-shaped portion (5a), the liquid storage tank (7), the liquid inlet pipe (8) and the infusion needle (9) constitute an infusion channel.

2. The disposable U-shaped safety infusion set with anti-backflow air inflow according to claim 1, characterized in that: A protective sealing cover (3a) is installed on the inlet end of the air inlet pipe (3).

3. The disposable U-shaped safety infusion set with anti-backflow air inflow according to claim 1, characterized in that: The regulator (6) is a hose flow regulator or a drip rate regulator.

4. The disposable U-shaped safety infusion set with anti-backflow air inflow according to claim 1, characterized in that: The liquid outlet pipe (5) and the liquid inlet pipe (8) are hollow long hoses with circular cross-sections made of medical plastic.

5. The disposable U-shaped safety infusion set with anti-backflow air inflow according to claim 1, characterized in that: The liquid storage tank (7) is a hollow circular or square structure with one end closed, made of medical plastic, and is injection-molded together with the liquid outlet pipe (5) and the liquid inlet pipe (8) to form an integrated structure.

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