JPH0586356U - Medical infusion line connector - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a needle-type connector for an infusion line, which is dramatically improved in sterility, which has been insufficient with conventional connectors. A hood of one connecting tool having a needle is made long enough to sufficiently cover the needle, and a flange portion that abuts an end face of the hood is formed on the other connecting tool, thereby making the connecting tool and the other connecting tool. The connecting device of No. 1 was connected via a sealant having high hydrophilicity or water content. The sealing material was impregnated with an antibacterial agent or a disinfectant.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a connector for a medical infusion line.

[0002]

[Prior Art]

 Infusion or infusion systems such as therapeutic medicinal solutions, blood or nutrient solutions are widely used in each medical institution. In this infusion system, an infusion line connector is often used to connect another infusion line to one infusion line or to connect this infusion line to an intravenous catheter. In addition to the luer connector, which is a male-female fitting method, currently used as a connector for an infusion line is a needle method in which the needle is pierced into a packing made of an elastic body such as rubber, which has improved the disadvantages of the luer connector. Are widely used.

FIG. 3 is a cross-sectional view of a luer connector, in which 1 is an infusion line A, 2 is an infusion line B, 3 is a connector A, 3 a is a hood, 3 b is an insertion tube, 4 is a connector B, 4a is its hood, 4b is a receiving tube, 5 is a fitting part, and 6a and b are tubes. As shown in the figure, in order to connect the infusion line A1 and the infusion line B2, after sterilizing the connectors A and B to sterilize them, the connector A3 and the connector B4 are brought into contact with each other. The insertion tube 3b is inserted into the receiving tube 4b. As a result, the hood 3a of the connector A also fits into the hood 4b of the connector B, and the two are connected. The liquid seal is obtained by the fitting portion 5.

FIG. 4 is a cross-sectional view showing a needle type connector, in which 6d is a tube, 11 is an infusion line C, 12 is an infusion line D, 13 is a connector C, 14 is a connector D, 13a, Reference numeral 14a is a hood of the connecting tools C and D, 13b is a male screw formed on the connecting tool C, 14b is a female screw formed on the connecting tool D, 15 is a packing formed of an elastic material such as rubber, and 16 is a needle. Is. To connect the infusion lines C and D, the disinfecting connector C13 and the connector D14 are brought into contact with each other and pressed, and both are rotated to screw the screws 13b and 14b. At this time, the needle 16 of the connector D is pierced into the packing 15 and penetrates it to connect the infusion line C11 and the infusion line D12. As a result, the liquid in the infusion line C11 flows into the infusion line D via the needle 16. The sealing of the liquid at the connecting portion is performed between the needle 16 and the packing 15.

[0005]

[Problems to be solved by the device]

 In general, the above-mentioned infusion line is for delivering a medicinal solution or the like into the human body, and therefore it must be sterile. In particular, since the connecting tool easily picks up bacteria from the outside, it is required to keep it clean and aseptic. In the conventional connector described above, when the lure connector is disconnected from the connectors A and B, the liquid easily flows out from the insertion tube 3b, and it is difficult to maintain a sterile condition. The needle method is an improvement over these drawbacks. Even in the needle method, since the tip of the needle 16 is not covered by the hood 14, not only may the operator of the connector be injured, but also the tip of the needle may not be covered with bacteria. It easily adheres, and bacteria may enter the infusion line when the needle 16 is punctured in the packing 15. In addition, there is a risk that bacteria in the air will enter the vicinity of the packing 15 through the screwing portions of the screws 13b and 14b and contaminate it.

The present invention is intended to provide a connector for an infusion line, which is constructed so as to drastically improve sterility in the connector for an infusion line, which has been insufficient with the conventional connector.

[0007]

[Means for Solving the Problems]

 In order to achieve the above purpose, in the connector for connecting a medical infusion line, make the hood of the connector equipped with a needle long enough to sufficiently cover the tip of the needle, and connect the other connector to the end surface of the hood. It was equipped with a flange part that abuts, and a sealant was inserted in the abutting part of both connectors. The sealing material is made of a highly hydrophilic or water-containing material such as foam having open cells, and is impregnated with an antibacterial agent or a disinfectant.

[0008]

[Action]

 Since the connector of the infusion line is configured as described above, the tip of the needle is covered by the hood, bacteria do not easily attach, and there is no risk of injuring the operator of the connector. Even if bacteria in the atmosphere try to enter the inside of the connector through the abutting portions of the two connectors, which are the only invasion paths, they cannot be penetrated into the connector because of the sealing material. Further, even if it intrudes, it is killed by the antibacterial agent and the disinfectant impregnated in the sealing material, so that the sterility of the inside of the connector is significantly higher than that of the conventional connector.

[0009]

【Example】

 Example 1 FIGS. 1a and 1b are cross-sectional views of a connector for a medical infusion line, a is a connector for an infusion line E, and b is a connector for an infusion line F, showing an embodiment of the present invention. In the figure, 6f is a tube, 21 is an infusion line E, 22 is an infusion line F, 23 is a connecting tool E, 23a is a hood, 23b is a male screw, 23c is a flange portion, 24 is a connecting tool F, 24a is a hood, 24b. Is a female screw, 24c is an end face of the hood, 25 is a packing, 26 is a needle, and 27 is a sealing material. As shown in the figure, a flange portion 23C is formed on the connecting tool E23, and an annular sealing material 27 is attached to the flange portion 23C. The outer diameter of the sealing material 27 is slightly larger than the inner diameter of the hood 24a. A male screw 23b is formed on the outer periphery of the hood 23a of the connector E, and a packing 25 made of an elastic material such as rubber is housed inside the hood 23a. A needle 26 is arranged in the center of the connector F24 concentrically with the tube 6f, the hood 24a has a length sufficient to cover the tip of the needle 26, and the connector E23 is provided on the inner peripheral portion thereof. A female screw 24b is formed which is screwed with the male screw 23b. When the connecting tool E23 and the connecting tool 24 are connected, the inner peripheral portion of the front end of the hood 24a abuts on the outer peripheral portion of the seal material 27, and the end surface 24c of the hood 24 abuts on the flange portion 23C of the connecting tool E. Has been done. The sealing material 27 is formed of a highly hydrophilic or water-containing material such as a foam having open cells, and it is desirable to impregnate it with an antibacterial agent or a disinfectant. The connector for the medical infusion line according to the present invention is configured as described above.

When connecting the above-described connecting tools E and F, the two connecting tools that have been sufficiently sterilized and made aseptic are brought into contact with each other in a concentric manner, and they are rotated while pressing each other, so that the screws 23b and 24b are screwed together. Then, the end surface 24c of the hood 24a of the connecting tool F contacts the flange portion 23c of the connecting tool E and stops. At this time, the inner peripheral part of the tip of the hood 24a covers the outer peripheral part of the seal material 27, but since the outer diameter of the seal material 27 is formed slightly larger than the inner diameter of the hood 24a, the seal material 27 is covered with the hoods 23a and 24a. It is in close contact with and its sealing property is perfect. Further, the needle 26 of the connecting tool F punctures and penetrates the packing 25 of the connecting tool E to connect both infusion lines. The connecting portion thus connected is the only invasion path for the bacteria in the atmosphere to enter the inside of the connecting tool, and the seal member 27 is interposed between the contacting sections of the two connecting tools 23 and 24. Therefore, the invasion of bacteria is prevented. Further, if the sealing material 27 is impregnated with an antibacterial agent or a disinfectant, the bacteria adhering to the sealing material 27 will be killed, so that the sterility of the connection portion will be dramatically improved.

Second Embodiment The arrangement of the sealing material 27 is not limited to that of the above embodiment, and may be interposed between the end face of the hood 24a and the flange 23c as shown in FIG. 2, for example.

Third Embodiment Although the above-mentioned embodiment is an example of a connecting tool for two infusion lines, a Y-port connecting tool can be similarly configured.

[0013]

[Effect of the device]

 According to the present invention, at the connecting portion of a medical infusion line, the length of the hood of a connecting device provided with a needle is made long enough to sufficiently cover the tip of the needle, and the other connecting device is provided with an end surface of the hood. Since there is a flange portion that abuts, and a sealing material is interposed between the abutting portions of the both connecting tools, and the sealing material is impregnated with an antibacterial agent or a disinfectant, bacteria and dust in the atmosphere to the connecting portion It is possible to prevent the invasion of the fluid, dramatically improve the sterility of the above-mentioned connection portion, and eliminate the risk of the operator of the infusion line being injured by the needle.

[Brief description of drawings]

FIG. 1 is a sectional view of a connector for a medical infusion line showing an embodiment of the present invention.

FIG. 2 is a sectional view of a connector for a medical infusion line according to another embodiment of the present invention.

FIG. 3 is a cross-sectional view of a connector for a conventional medical infusion line.

FIG. 4 is a cross-sectional view of a connector for a conventional medical infusion line.

[Explanation of symbols]

 21 ... Infusion line E 22 ... Infusion line F 23 ... Connection tool E 23a ... Hood 23b ... Male screw 23c ... Flange portion 24 ... Connection tool F 24a ... Hood 24b ... Female screw 24c ... Hood end surface 25 ... Packing 26 ...... Needle 27 …… Sealant

Claims (4)

[Scope of utility model registration request] 1. A needle type connector for connecting a medical infusion line, wherein the hood of one of the connectors equipped with a needle is made long enough to sufficiently cover the tip of the needle, and the hood is connected to the other connector. A connector for a medical infusion line, characterized in that a flange portion is formed so as to contact the end surface of the connector, and a sealing material is interposed between the contact portions of the connector. 2. The connector for a medical infusion line according to claim 1, wherein the sealing material is impregnated with an antibacterial agent or a disinfectant. 3. The connector for a medical infusion line according to claim 1, wherein at least the vicinity of the surface of the sealing material is formed of a foam having open cells. 4. The connector for a medical infusion line according to claim 1, wherein the sealing material is made of a highly hydrophilic or water-containing material.