CN205586297U - Needleless of taking one -way function adds medicine joint - Google Patents

Abstract

The utility model discloses a needle-free dosing joint with one-way function, which comprises a Luer male joint, a joint connector, a Luer female joint, a rubber plug and a one-way valve diaphragm. The lower end of the Luer male joint is A support column and several bosses are arranged in the opening; a passage through the upper and lower ends of the joint connecting piece is provided inside, and a flange and several ribs are arranged in the upper opening of the joint connecting piece, and the several ribs are evenly distributed On the inner wall surface of the upper opening of the joint connector, the flange is ring-shaped, and the flange is located below the rib; the Luer male connector is connected to the Luer through the joint connector. The female joints are connected, and the one-way valve diaphragm is arranged between the Luer male joint and the joint connecting piece. The needle-free dosing joint with one-way function of the utility model can make the infusion operation only be carried out from outside the body to the inside of the body, ensuring that no blood relapse occurs during the infusion process.

Description

A needle-free medicated joint with one-way function

technical field

The utility model relates to a needle-free medicine adding joint with one-way function.

Background technique

As the medical market attaches great importance to the safety of patients and the safety of medical staff, more and more needle-free dosing connectors are used for infusion in the market. At present, there are various needle-free dosing connectors on the market, which are divided into positive pressure connectors and negative pressure connectors according to the pressure generated during use. Because the negative pressure connector may return blood if you don’t pay attention to it during use, improper handling will cause thrombus to endanger the patient, and the positive pressure connector will generate a positive pressure during use to rush the liquid in the pipeline to the blood vessel, which can prevent Blood return, but it must cooperate with other devices (flow stop clamp) to play a role in the process of use. Nurses are required to change their operating habits and strictly follow the operation sequence. Changes in the middle sequence may cause the joints to fail to prevent blood return. Even As a result, the joint cannot be sealed, allowing bacteria to grow inside the joint, bringing additional risks to patients.

The Chinese patent with the application number 201020147966.5 discloses a needle-free dosing joint, including a rubber plug, a joint seat and a joint cover with an inner cavity, which can realize needle-free dosing, avoid contamination of the liquid medicine by the needle, and be flexible in use. The function of needle-free drug dosing can be realized without other accessories or steps; the product has a simple structure and is easy to operate, but the needle-free drug-dosing connector does not have a one-way function, and blood return may occur during the infusion process.

Utility model content

The purpose of this utility model is to overcome the defects of the prior art and provide a needle-free dosing joint with one-way function, which can make the infusion operation only be carried out from the outside to the inside of the body, ensuring that there will be no blood return during the infusion process .

The technical solution to achieve the above purpose is: a needle-free drug dosing connector with one-way function, including a Luer male connector, a connector connector, a Luer female connector, a rubber plug and a one-way valve diaphragm, wherein:

The lower opening of the Luer male connector is provided with a support column and several bosses, the plurality of bosses are arranged around the inner wall of the lower end opening of the Luer male connector, the support column is in an inverted triangle shape, and the The support column is located in the middle of the lower opening of the Luer male connector;

The inside of the joint connector is provided with a passage through up and down, and a flange and several ribs are arranged in the upper opening of the joint connector, and the plurality of ribs are evenly distributed in the upper opening of the joint connector. On the wall, the flange is annular, and the flange is located below the rib;

The Luer male connector is connected to the Luer female connector through the connector connector, the lower end opening of the Luer male connector catches the upper end opening of the connector connector, and the upper end of the Luer female connector The opening snaps into the lower end opening of the joint connecting piece;

The one-way valve diaphragm is arranged between the Luer male connector and the joint connector, and the lower surface of the one-way valve diaphragm is arranged in contact with the upper surface of the flange on the joint connector , the upper surface of the one-way valve diaphragm is arranged in contact with the bottom end of the support column on the Luer male connector;

The rubber plug is placed in the inner cavity of the Luer female connector, and its upper end is sleeved in the lower opening of the joint connector, and an upper opening channel is opened in the rubber plug and connected to the connector connector. The channel is connected, and the lower end surface of the rubber plug forms a sealing structure with the Luer female connector.

The above-mentioned one-way needle-free medicine feeding connector, wherein the top end of the Luer male connector is a cannula connector.

The above-mentioned one-way needle-free drug-feeding connector, wherein, the Luer male connector has an internal helical interface.

The above-mentioned one-way needle-free drug-feeding connector, wherein, the Luer male connector, the connector connector and the Luer female connector are all made of polycarbonate material.

In the above-mentioned one-way needle-free medicine feeding connector, the rubber stopper is made of silicone material.

In the aforementioned needle-free medicated connector with one-way function, the lower end of the support column extends outside the Luer male connector.

The needle-free drug-feeding connector with one-way function of the utility model is a modification and innovation of the Chinese patent application number 201020147966.5 on a needle-free drug-feeding connector; the product is safer and more reliable. The needleless dosing joint with one-way function of the utility model can only carry out the infusion operation from the outside to the inside of the body, ensuring that there will be no blood back phenomenon during the infusion process. The needle dosing connector can allow medical staff to perform infusion operations according to personal habits at ease, and there will be no phenomenon that the connector is not sealed and will not bounce.

Description of drawings

Fig. 1a is a structural schematic diagram of a needle-free dosing joint with a one-way function of the present invention;

Fig. 1b is the A-A direction sectional view of Fig. 1a;

Figure 1c is a partially enlarged view of part B of Figure 1a;

Figure 2a is a three-dimensional structure diagram of a Luer male connector;

Figure 2b is a front view of the Luer male connector;

Figure 2c is a sectional view taken along the line C-C of Figure 2b;

The three-dimensional structure diagram of Fig. 3a joint connector;

Figure 3b is a front view of the joint connector;

Fig. 3c is a sectional view along the line D-D of Fig. 3b.

detailed description

In order to enable those skilled in the art to better understand the technical solution of the present utility model, its specific implementation will be described in detail below in conjunction with the accompanying drawings:

Please refer to Fig. 1a to Fig. 1c, the best embodiment of the utility model, a needle-free dosing connector with one-way function, including Luer male connector 1, connector connector 2, Luer female connector 3, rubber plug 4 and check valve diaphragm 5.

Please refer to Fig. 2a to Fig. 2c, a supporting column 11 and a plurality of bosses 12 are arranged in the lower opening of the Luer male connector 1, and the plurality of bosses 12 are arranged around the inner wall surface of the lower opening of the Luer male connector 1, and the supporting column 11 is in the shape of The support column 11 is located in the middle of the lower opening of the Luer male connector 1 , and the lower end of the support column 11 extends outside the Luer male connector 1 .

Please refer to Fig. 3a to Fig. 3c, the interior of joint connector 2 is provided with a channel 21 through up and down, the upper end opening of joint connector 2 is provided with a flange 22 and several ribs 23, and several ribs 23 are evenly distributed on the joint connection. On the inner wall surface of the upper opening of the member 2 , the flange 22 is annular, the inner diameter of the flange 22 is larger than the inner diameter of the channel 21 , and the flange 22 is located below the rib 23 .

Please refer to Fig. 1a to Fig. 1c again, the Luer male connector 1 is connected with the Luer female connector 3 through the connector connector 2, the lower end opening of the Luer male connector 1 catches the upper end opening of the connector connector 2, and the Luer female connector The upper end opening of 3 catches the lower end opening of the connector connector 2; the check valve diaphragm 5 is arranged between the Luer male connector 1 and the connector connector 2, and the lower surface of the check valve diaphragm 5 is in contact with the connector connector The upper surface of the flange 22 on 2 is set in contact, the upper surface of the one-way valve diaphragm 5 is set in contact with the bottom end of the support column 11 on the Luer male connector 1, and the one-way valve diaphragm 5 is lifted by the support column 11 . The rubber plug 4 is placed in the inner cavity of the Luer female connector 3, and its upper end is sleeved in the lower opening of the joint connector 2. An upper opening channel 41 is opened in the rubber plug 4 and communicated with the channel 21 of the connector connector 2. , the lower end surface of the rubber plug 4 forms a sealing structure with the Luer female connector 3 .

The top end of the Luer male connector 1 is a cannula connector 13 . The male Luer connector 1 has an internal threaded interface 14 .

The Luer male connector 1, the connector connector 2 and the Luer female connector 3 are all made of polycarbonate material. The rubber plug 4 is made of silicone material.

In the needle-free dosing joint with one-way function of the utility model, when in use, the upper surface of the one-way valve diaphragm 5 is lifted by the support column 11, and the lower surface of the one-way valve diaphragm 5 is connected to the joint connector 2 The upper surface of the upper flange 22 fits together to separate the upper and lower spaces. The material of the one-way valve diaphragm 5 is very soft, and the liquid entering in the direction of the Luer female connector 3 contacts the one-way valve diaphragm 5. Under the action of gravity (or pressure), the one-way valve diaphragm 5 is deformed, the lower surface of the one-way valve diaphragm 5 breaks away from the flange 22, the surroundings of the one-way valve diaphragm 5 sink, and the boss 12 inside the Luer male connector 1 can To prevent excessive deformation of the one-way valve diaphragm 5, the liquid flows into the direction of the Luer male connector 1 through the one-way valve diaphragm 5, and the ribs 23 on the joint connector 2 can ensure the smooth flow of the liquid; when the liquid stops flowing, the one-way The valve diaphragm 5 returns to its original shape under the action of its own elasticity, and fits together with the flange 22 on the connecting piece 2 to restore the seal; if there is pressure in the direction, the one-way valve diaphragm 5 will , more close to the flange 22 on the joint connector 2, without leaking.

To sum up, the needle-free drug dosing joint with one-way function of the utility model can make the infusion operation only be carried out from outside the body to the inside of the body, ensuring that there will be no blood return during the infusion process, and can reassure medical staff. Carry out the infusion operation according to personal habits, and there will be no phenomenon that the joint is not sealed and will not bounce.

Those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the utility model, rather than as a limitation to the utility model, as long as within the spirit of the utility model, the above-mentioned The changes and modifications of the embodiments will all fall within the scope of the claims of the present utility model.

Claims (6)

1. the needleless medicine-feeding joint of a band one-way function, it is characterised in that include that Rule male joint, joint connect Part, Rule female joint, plug and check valve diaphragm, wherein:

A support column and some boss, described some boss cinctures it are provided with in the lower ending opening of described Rule male joint The internal face of the lower ending opening of described Rule male joint is arranged, and described support column is del, and described support column It is positioned at the middle part of the lower ending opening of described Rule male joint；

The inside of described connector for joint offers the passage of a up/down perforation, the upper end open of described connector for joint Inside being provided with a flange and some ribs, described some ribs are distributed on the interior of the upper end open of described connector for joint Wall, ringwise, and described flange is positioned at the lower section of described rib to described flange；

The male joint of described Rule is connected with the female joint of described Rule by described connector for joint, the male joint of described Rule Lower ending opening clamping residence state the upper end open of connector for joint, the upper end open card of described Rule female joint is caught The lower ending opening of described connector for joint；

Described check valve diaphragm is arranged between the male joint of described Rule and described connector for joint, and described check valve The upper surface of the flange on the lower surface of diaphragm and described connector for joint is arranged, described check valve diaphragm upper Surface contacts setting with the bottom of the support column in the male joint of described Rule；

Described plug is placed in the interior intracavity of described Rule female joint, and its upper end is socketed under described connector for joint In end opening, in described plug, offer a upper end open passage and the channel connection with described connector for joint, described The lower surface of plug is formed with the female joint of described Rule and seals structure.

The needleless medicine-feeding joint of a kind of band one-way function the most according to claim 1, it is characterised in that described The top of Rule male joint is spigot joint.

The needleless medicine-feeding joint of a kind of band one-way function the most according to claim 1, it is characterised in that described Rule male joint has internal coiling interface.

4. according to the needleless medicine-feeding joint of a kind of band one-way function described in any one of claims 1 to 3, its feature Being, the male joint of described Rule, connector for joint and Rule female joint are made by makrolon material.

5. according to the needleless medicine-feeding joint of a kind of band one-way function described in any one of claims 1 to 3, its feature Being, described plug is made up of silica gel material.

The needleless medicine-feeding joint of a kind of band one-way function the most according to claim 1, it is characterised in that described The lower end of support column extends in the outside of described Rule male joint.