JP3525550B2 - Fluid dosing or sampling device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid administration or collection device, for example, a mixed injection port used for mixed injection from the side during infusion, or a blood collection port used for a blood collection device for collecting blood from inside the body. Fluid dosing or sampling device.

[0002]

2. Description of the Related Art When a patient is infused with an infusion device,
It is often necessary to co-inject another chemical solution from the side in addition to the chemical solution from the main line. At this time, the following two methods have been conventionally used.
First, a (puncture needle) puncturing mixed injection member made of a rubber material is provided on the downstream side of the infusion set, and the injection needle is punctured at the injection port using a syringe or the like for mixed injection. The second is to connect a three-way stopcock or the like to the infusion line and select the opening or closing of the main line channel or the side channel by operating the cock. However, each method has drawbacks, and improvement by medical staff has been desired. The first method is that the injection needle cannot puncture from a portion other than a thick mixed injection part such as a rubber stopper, and the needle tip will penetrate the rubber stopper even if the mixed injection part is removed or the mixed injection part is punctured. If the part behind the mixed injection port of the tube is punctured, liquid will leak from the erroneously punctured part.
In addition, since the mixed injection rubber stopper is not designed to hold the punctured injection needle, when continuously injecting the mixed injection drug contained in the syringe, take measures to fix and hold the unstable syringe container. It was inevitable and inconvenient. For example, a needle base of a syringe and a mixed injection portion are tightly wound and fixed with a tape, or a device for preventing a side injection line puncture needle from falling off connected to the mixed injection portion as disclosed in Japanese Utility Model Publication No. Hei 5-22187. Needed. Next, since the second method does not puncture, there is no problem due to erroneous puncture as described above, but the following new problem occurs. That is, since the three-way stopcock must select the flow path by operating the cock,
Incorrect operation of this cock could lead to serious consequences.
For example, there is a possibility that the chemical liquid to be mixed and injected may not be injected, air may enter from the side injection part, or the chemical liquid from the main line may leak from the side injection part. In particular, when the amount of chemical liquid to be mixed and injected increases and the number of three-way stopcocks to be connected increases, selection of the flow path or cock operation becomes very complicated. In addition, since the three-way stopcock has the function of opening and closing the flow path simply by switching the cock, the port that connects the side-injection line is easily contaminated, and the drug solution and blood accumulated near the port do not propagate bacteria. There is a problem that it becomes a hotbed for

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fluid dosing or sampling device that overcomes the above mentioned drawbacks of the prior art. That is, without operating the cock like a three-way stopcock, by simply puncturing the injection needle, for example, mixed injection of infusion into the main line can be performed simply by puncturing the injection needle, and at that time It is an object of the present invention to provide a fluid administration or collection device which does not fail to puncture a mixed injection portion with a needle or prevent an injection needle from penetrating the mixed injection portion.

[0004]

DISCLOSURE OF THE INVENTION The present invention is directed to a hollow conduit member, a cylindrical protruding member formed by opening the hollow conduit member, an elastic member fitted to the cylindrical protruding member, and the cylindrical member. In a fluid administration or collection device comprising a female luer member fitted and attached to a protruding member, the female luer member is made of an elastic material so as to be slidable upward with respect to the tubular protruding member, Also, the present invention relates to a fluid administration or sampling device which is slidable up and down with respect to a tubular projection member. The fluid administration or collection device of the present invention is used by connecting to a device for injecting a fluid into the body or collecting a fluid from the body, for example, an infusion device or circulating blood from a patient. It is used by connecting to a device such as a blood extracorporeal circulation device, a blood transfusion device, and a blood sampling device. Further, the fluid administration or collection device of the present invention can be used by being connected to a device for injecting a fluid into or extracting a fluid from an animal body as well as a human body. The female luer member of the fluid dosing or collection device of the present invention comprises:
The female luer member is made of an elastic material such as natural rubber, synthetic rubber, or thermoplastic elastomer and is externally mounted on the tubular projection member. It can be slid vertically with respect to the member and can be held at any position. At this time, as shown in FIGS. 4 and 5, the outer surface of the cylindrical projection member and the inner surface of the female luer member provided with a single or a plurality of concavo-convex portions that can be fitted to each other are used. By mating with each other, the female luer member can be more firmly held with respect to the tubular projection member, and the female luer member can be fitted to the plurality of uneven portions depending on the length of the injection needle or the like. Can be used properly. Further, as shown in FIGS. 4 and 5, the convex portion formed on the outer surface of the female luer member has only the convex portion so that the female luer member can easily slide in the vertical direction with respect to the tubular projection member. It may be made of an elastic member which is softer than the other parts of the lure member. Since the female luer member slides upward and holds the injection needle base and the like in the expanded state, the elastic material forming the female luer member is sufficient to hold the injection needle base. It is preferable to have rigidity. The hollow conduit member and the cylindrical projection member formed by opening the hollow conduit member are formed of a synthetic resin such as polycarbonate, polyester, polymethylpentene, polypropylene, polyacetal, or cyclic olefin. It is preferable that the cylindrical projection member has an inverted frustoconical shape in which the tip opening is wider than the bottom portion because the elastic member can be easily fitted and fixed in the cylindrical projection member, but the cylindrical projection member is shown in FIG. May be 1, 2 and 3, the tubular protrusion member is installed perpendicularly to the hollow conduit member, but the tubular protrusion member is oblique to the hollow conduit member. It may be installed at an angle. Further, in the fluid administration or collection device of the present invention, at least one member selected from the group consisting of the hollow conduit member, the cylindrical projection member, the elastic member and the female luer member contains an antibacterial agent, particularly a mixed injection part. A cylindrical projection member that constitutes
Since the elastic member and the female luer member are easily contaminated, it is effective for sterilization when an antibacterial agent is contained.

An embodiment in which the fluid administration or collection device of the present invention is connected to an infusion device and mixed injection is performed with an injection needle will be described below with reference to the drawings. Figure 1 shows the state without mixed injection.
FIG. 2 shows a state when mixed injection is performed. When the female luer member 2 is used in the state without mixed injection shown in FIG. 1, the female luer member 2 is pushed into the hollow conduit 4 side so as not to get in the way and used in a shortened state. When used in the mixed injection state of FIG. 2, it is necessary to puncture the elastic member 1 with the injection needle 5, so that the injection needle 5 does not penetrate the elastic member 1 and puncture the backside portion 7 of the mixed injection portion of the tube. Then, the female luer member 2 is slid with the tubular projection member 3 to extend the female luer member. Since the injection needle base 6 can be fitted into the extended female luer member 2, it becomes possible to firmly fix a syringe containing a drug or the like to the mixed injection part. After puncturing the elastic member 1 with the injection needle 5, mixed injection is performed from the side injection line. The elastic material 5 may be any material as long as it can self-seal so that liquid or blood does not leak when the punctured injection needle 5 is pulled out, but natural rubber, synthetic rubber, thermoplastic elastomer, gel or the like is particularly suitable. Examples of the gel include a medical gel containing high molecular weight polyethylene as a main material and process oil as a secondary material. The elastic member 1 is fitted in the cylindrical projection member 3 as shown in FIGS.
In addition to a structure that is fixed and punctured with an injection needle 5, a fluid such as a drug solution or blood is injected or aspirated or collected by pushing in a syringe or a luer connector without puncturing with an injection needle or the like as shown in FIG. A structure having a function of a valve that can be used is included. The elastic member 1 is
It may have a multi-layer structure composed of a plurality of layers having different physical properties and / or chemical properties. For example, the layer of the elastic member 1 on the side to be punctured by the injection needle 5 is made of a more flexible material so that the injection needle 5 can puncture easily, or a hollow through which a fluid injected into or collected from the body passes. The layer on the side of the conduit member can be made of, for example, a material that is chemically stable and has no risk of eluate, or a material that does not easily coagulate blood. In the case of the multilayer structure, each layer is laminated,
Alternatively, a material having a specific function, for example, a material that is chemically stable and does not have a risk of eluate or a material that does not easily coagulate blood can be formed on the elastic member by coating. Further, the portion of the elastic member 1 that is punctured by the injection needle 5 can be made of a material that is more flexible than the other portions so that the injection needle 5 can easily puncture the portion.

Specific embodiments of the present invention will be described below. 1. A hollow conduit member, a cylindrical protruding member formed by opening in the hollow conduit member, an elastic member installed in the cylindrical protruding member, and a female luer member fitted and attached to the cylindrical protruding member. A fluid dosing or collecting device, wherein the female luer member is vertically slidable with respect to the cylindrical projection member. 2. 1. The fluid administration or sampling device as described above, wherein the fluid administration or sampling device is used by being connected to a device for injecting a fluid into a human or animal body or collecting a fluid from a human or animal body. . 3. The outer surface of the cylindrical projection member and the inner surface of the female luer member are provided with a single or a plurality of concavo-convex portions that can be fitted to each other. The fluid administration or collection device according to 1 or 2, which can firmly hold the projection member. 4. 4. The fluid administration or sampling device according to any one of 1 to 3 above, wherein the elastic member installed in the tubular projection member is fitted and fixed in the tubular projection member. 5. 5. The fluid administration or collection device according to 1 to 4, wherein an elastic member installed in the cylindrical projection member has a function of functioning as a valve or a valve capable of injecting or sucking a liquid. 6. 6. The fluid administration or sampling device according to 1 to 5 above, wherein the elastic member is made of at least one elastic material selected from the group consisting of natural rubber, synthetic rubber, thermoplastic elastomer and gel. 7. 7. The fluid administration or sampling device according to 1 to 6 above, wherein the elastic member has a multi-layered structure composed of a plurality of layers having different physical properties and / or chemical properties. 8. 8. The fluid administration or sampling device according to any one of 1 to 7 above, wherein the cylindrical projection member has an inverted truncated cone shape, and an elastic member having an inverted truncated cone shape is fitted and fixed in the cylindrical projection member.

9. 9. The fluid administration or collection device according to 1 to 8 above, wherein at least one member selected from the group consisting of a hollow conduit member, a cylindrical projection member, an elastic member and a female luer member contains an antibacterial agent. 10. The device for administering or collecting fluid according to any one of 1 to 9 above, wherein the hollow conduit member is used by connecting to a device for injecting fluid into the body or collecting fluid from the body. 11. 10. The fluid administration or collection device according to 10, wherein the device for injecting the fluid into the body or collecting the fluid from the body is an infusion device. 12. 10. The fluid administration or collection device according to 10 above, wherein the device for injecting a fluid into the body or collecting the fluid from the body is a blood transfusion device. 13. 10. The fluid administration or collection device according to 10, wherein the device for injecting a fluid into the body or collecting the fluid from the body is a blood collecting device.

[0008]

[Effect] 1. Since the fluid administration or sampling device of the present invention does not have a mechanism of opening and closing the flow path by a cock operation like a three-way stopcock, it is possible to easily perform mixed injection simply by puncturing an injection needle, and a small amount of mixed injection drug can be injected. Even in such a case, there is almost no loss in the retention portion, and the time lag of the mixed injection liquid is eliminated (which is particularly important when immediate effect is expected). Furthermore, since there is no liquid retention, it is advantageous in preventing bacterial growth. 2. A fluid administration or collection device of the present invention has an elastic member fitted to a cylindrical projection member at a mixed injection portion and a female luer member fitted and attached to the cylindrical projection member, and has an injection needle. Since the female luer member can be extended when puncturing, the puncturing portion and the direction are restricted, and erroneous puncturing does not occur. Furthermore, since the lure member and the needle base member of the syringe can be fitted to the female luer member, they can be connected and fixed to the mixed injection part without taking special tools or means.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a fluid administration or collection device of the present invention.

FIG. 2 is a schematic cross-sectional view of the fluid administration or collection device of FIG. 1 in a mixed injection state.

FIG. 3 is a schematic cross-sectional view of another embodiment (having a structure in which the cylindrical projection member has an inverted truncated cone) of the fluid administration or collection device of the present invention.

FIG. 4 is another embodiment of the fluid administration or collection device of the present invention (where the outer surface of the cylindrical projection member (B) and the inner surface of the female luer member (D) are provided with concavo-convex portions that can be fitted to each other. ) Is a schematic cross-sectional view of FIG.

FIG. 5 is a schematic cross-sectional view of the fluid administration or collection device of FIG. 4 in a mixed injection state.

FIG. 6 is a schematic cross-sectional view of another embodiment (where the elastic member has a valve or a function corresponding to a valve) of the fluid administration or collection device of the present invention.

[Explanation of symbols]

1 Elastic material 1'elastic material 2 Female lure member 3 Cylindrical protrusion member 4 Hollow conduit member 5 injection needles 6 needle base 7 Back side of mixed injection part of tube

─────────────────────────────────────────────────── --Continued from the front page (56) References JP 59-155255 (JP, A) JP 7-80080 (JP, A) JP 2002-95757 (JP, A) JP 62-243563 (JP, A) Actual flat 4-133841 (JP, U) Actual flat 3-129156 (JP, U) Actual flat 4-99950 (JP, U) Actual flat 4-61547 (JP, U) Actual Publication No. 49-10157 (JP, Y1) US Pat. No. 4568346 (US, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61M 39/02 A61M 5/00 300

Claims (9)

(57) [Claims] 1. A hollow conduit member, a cylindrical protruding member formed by opening in the hollow conduit member, an elastic member installed in the cylindrical protruding member, and fitted and attached to the cylindrical protruding member. In a fluid dosing or sampling device having a female luer member, the female luer member is located above the tubular projection member.
A fluid administration or sampling device, characterized in that it is made of an elastic material so as to be slidable in a direction , and is slidable up and down with respect to a cylindrical projection member. 2. The outer surface of the tubular projection member and the inner surface of the female luer member are provided with concavo-convex portions that can be fitted to each other. 2. The fluid dosing or sampling device according to claim 1, which is capable of firmly holding the projection member. 3. The elastic member is made of at least one elastic material selected from the group consisting of natural rubber, synthetic rubber, thermoplastic elastomer and gel.
Alternatively, the fluid administration or collection device according to 2 above. 4. The fluid administration or collection device according to claim 1, wherein the elastic member installed in the tubular projection member is fitted and fixed in the tubular projection member. 5. An elastic member installed in the cylindrical projection member has a function of injecting or sucking a liquid or a function corresponding to the valve.
Alternatively, the fluid administration or collection device according to 4 above. 6. At least one member selected from the group consisting of a hollow conduit member, a cylindrical projection member, an elastic member and a female luer member contains an antibacterial agent.
A fluid dosing or sampling device according to 2, 3, 4 or 5. 7. The fluid according to claim 1, wherein the hollow conduit member is used by connecting to a device for injecting a fluid into the body or collecting a fluid from the body. Administration or collection device. 8. The fluid administration or collection device according to claim 7, wherein the device for injecting the fluid into the body or collecting the fluid from the body is an infusion device. 9. The fluid administration or collection device according to claim 7, wherein the device for injecting the fluid into the body or collecting the fluid from the body is a blood collecting device.