CN205494547U - Prevent liquid reflux's infusion structure - Google Patents

Abstract

The utility model provides a prevent liquid reflux's infusion structure, connect including empty needle, connecting pipe and duo tong infusion, the one end and the infusion articulates that lead to of connecting pipe more, the other end is connected with the empty needle, be equipped with the two -port valve on the connecting pipe. Since the technical scheme is used, the utility model has the advantages of simple structure, push away the medicine back that finishes at the empty needle, through closing the two -port valve that sets up on the connecting pipe, prevent to enter into the connecting pipe part between two -port valve and the empty needle with the liquid that lead to other infusion set that other joints that the infusion connects meet more, and then prevent pollution connecting pipe and the interior liquid of empty needle.

Description

Infusion structure to prevent liquid backflow

technical field

The utility model belongs to the technical field of medical equipment, in particular to an infusion structure for preventing liquid backflow.

Background technique

During multi-channel infusion, different fluids are delivered through the multi-channel infusion connector. When one of the connectors of the multi-way infusion connector is connected with an empty needle through the connecting tube, after the empty needle pushes medicine, the liquid delivery device connected to the other connectors of the multi-way infusion connector continues to work. Because it takes a certain amount of time to separate the connecting tube from the multi-way infusion connector, during the process of separating the connecting tube from the multi-way infusion connector, the liquid of these liquid delivery devices will enter the connecting tube and the empty needle through the multi-way infusion connector. contaminate the liquid in the connecting tube and the empty needle.

Utility model content

The purpose of this utility model is to provide an infusion structure with a simple structure to prevent liquid backflow. After the empty needle pushes the medicine, the two-way valve arranged on the connecting pipe is closed to prevent it from connecting with other joints of the multi-way infusion joint. The liquid from other infusion devices enters the connecting tube part between the two-way valve and the empty needle, thereby preventing contamination of the liquid in the connecting tube and the empty needle.

The purpose of this utility model is achieved through such a technical solution, which includes an empty needle, a connecting tube and a multi-way infusion joint, one end of the connecting tube is connected to the multi-way infusion joint, and the other end is connected to the empty needle, and the connection The pipe is provided with a two-way valve.

During multi-channel infusion, one of the joints of the multi-channel infusion connector is connected with an empty needle through the connecting tube. Open the two-way valve before pushing the drug with the empty needle, and close the two-way valve after pushing the medicine with the empty needle to prevent the liquid from other infusion devices connected to other joints of the multi-way infusion connector from entering between the two-way valve and the empty needle part of the connecting tube, thereby preventing contamination of the liquid in the connecting tube and the empty needle.

It only takes a very short time to close the two-way valve, which can prevent the liquid from other infusion devices from entering the connecting tube part between the two-way valve and the empty needle, which is much less than the time spent in the process of separating the connecting tube from the multi-way infusion connector .

Further, the infusion structure for preventing liquid backflow further includes a micropump, and the empty needle is installed on the micropump.

Further, the number of the two-way valves is two.

Further, among the two two-way valves, the length of the connecting tube between the two-way valve on the side close to the multi-way infusion joint and the multi-way infusion joint is 15 cm.

Further, the length of the connecting pipe between the two two-way valves is 10 cm.

Further, the length of the connecting pipe is 90cm.

Due to the adoption of the above technical scheme, the utility model has the advantage of simple structure. After the empty needle pushes the medicine, the two-way valve arranged on the connecting pipe is closed to prevent other infusion fluids connected with other joints of the multi-way infusion fluid joint. The liquid of the device enters the connecting tube part between the two-way valve and the empty needle, thereby preventing the liquid in the connecting tube and the empty needle from being polluted.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure, 1. Micropump; 2. Empty needle; 3. Connecting tube; 4. Multi-way infusion joint; 5. Two-way valve.

detailed description

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific illustrations.

As shown in Figure 1, the utility model comprises an empty needle 2, a connecting tube 3 and a multi-way infusion joint 4, one end of the connecting tube 3 is connected with the multi-way infusion joint 4, and the other end is connected with the empty needle 2, and the connection The pipe 3 is provided with a two-way valve 5 .

During multi-channel infusion, one of the joints of the multi-channel infusion connector 4 is connected to the empty needle 2 through the connecting tube 3 . Before pushing medicine with empty needle 2, open the two-way valve 5, and after pushing medicine with empty needle 2, close the two-way valve 5 to prevent the liquid from other infusion devices connected with other joints of the multi-way infusion connector 4 from entering the two-way valve 5 and the part of the connecting tube 3 between the empty needle 2, thereby preventing contamination of the liquid in the connecting tube 3 and the empty needle 2.

It only takes a very short time to close the two-way valve 5, which can prevent the liquid from other infusion devices from entering the connecting tube 3 between the two-way valve 5 and the empty needle 2, which is much less than connecting the connecting tube 3 and the multi-way infusion joint. 4 The time spent in the separation process.

As shown in FIG. 1 , the infusion structure for preventing liquid backflow further includes a micropump 1 , and the empty needle 2 is installed on the micropump 1 . The micropump 1 is a portable medical device, small in size and light in weight, capable of injecting medicines precisely and in a small amount, and suitable for long-term microdosing.

As shown in FIG. 1 , in order to enhance the barrier effect, the number of the two-way valves 5 is two. When closing the two-way valve 5, the two-way valve 5 located on the side of the multi-way infusion joint 4 should be closed first, and then the two-way valve 5 located on the side of the empty needle 2 should be closed.

As shown in Figure 1, in order to prevent the liquid in the liquid delivery device connected to other joints of the multi-way infusion connector 4 from entering the connection tube 3 between the two-way valve 5 and the empty needle 2 when the two-way valve 5 is closed Among the two two-way valves 5, the length of the connecting pipe 3 between the two-way valve 5 on the side close to the multi-way infusion joint 4 and the multi-way infusion joint 4 is 15 cm. This length is set according to the flow velocity of the liquid in the liquid delivery device connected with other joints of the multi-way infusion joint 4 .

As shown in FIG. 1 , the length of the connecting pipe 3 between the two two-way valves 5 is 10 cm. This length is also set according to the flow velocity of the liquid in the liquid delivery device connected with other joints of the multi-way infusion joint 4 .

As shown in Figure 1, the length of the connecting pipe 3 is 90cm.

The above are only embodiments of the present utility model, and are not intended to limit the scope of patents of the present utility model. All equivalent structures made using the description of the utility model and the contents of the accompanying drawings are directly or indirectly used in other related technical fields, all in the same way Within the scope of patent protection of the utility model.

Claims (6)

1. preventing the fluid infusion structure that liquid refluxes, it is characterised in that include empty needle, connecting tube and manifold infusion connector, one end of described connecting tube is connected with manifold infusion connector, and the other end is connected with empty needle, and described connecting tube is provided with two-port valve.

Prevent the fluid infusion structure that liquid refluxes the most as claimed in claim 1, it is characterised in that described in prevent liquid from refluxing fluid infusion structure also include that micro pump, described empty needle are installed on micro pump.

Prevent the fluid infusion structure that liquid refluxes the most as claimed in claim 1 or 2, it is characterised in that the quantity of described two-port valve is two.

Prevent the fluid infusion structure that liquid refluxes the most as claimed in claim 3, it is characterised in that in said two two-port valve, a length of 15cm of the connecting tube between two-port valve and the manifold infusion connector of manifold infusion connector side.

Prevent the fluid infusion structure that liquid refluxes the most as claimed in claim 4, it is characterised in that a length of 10cm of the connecting tube between said two two-port valve.

Prevent the fluid infusion structure that liquid refluxes the most as claimed in claim 5, it is characterised in that a length of 90cm of described connecting tube.