JPH01185266A - Liquid transfusion device - Google Patents

Abstract

PURPOSE:To enable work of an operation or the like to be perfectly executed preventing a transfusion liquid pipe or the like from its contamination due to a germ and its propagation or the like by forming a water absorptive polymer which absorbs leak liquid in a connection part between a vessel and the transfusion liquid pipe preventing the contamination caused by this leak liquid. CONSTITUTION:A contamination preventing tool 3 is formed by a polymer having high water absorptivity, for instance, about 10-1,000 times (volume ratio) absorption coefficient, further being preferable containing an antibacterial agent. The contamination preventing tool 3, fitting a point end part 2a of a flange 2, thrusts an injection needle 1 into a rubber plug 4, when the injection needle 1 intrudes its point end part into a bottle 6, the contamination preventing tool 3 is closely attached to a cap 5, rubber plug 4 and a flange part 2b, and conducting the bottle 6 to a transfusion liquid pie 7 by the injection needle 1 intruding its point end part into the bottle 6, high caloric transfusion liquid TPNL in the bottle 6 is supplied into to body of a patient via the injection needle 1 and the transfusion liquid pipe 7. In this way, in case of dosage of, for instance, treatment transfusion liquid into the body of the patient, especially a contamination substance is prevented from infiltrating into the body of the patient, and the transfusion liquid is safely executed in its dosage.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to an infusion device, for example, a medical infusion device.

Conventional technology Supplying (administering) high-calorie infusions to living organisms to provide nutritional support before and after surgery, or to secure nutrition for patients with digestive system dysfunction (T
otal Parenteral Nutrition
) or administering enteral infusions to a living body (Enteral
Nutrition) is performed. Administration of enteral fluids is a necessary procedure for promoting health recovery and hastening social reintegration in patients with gastrointestinal dysfunction or patients who have undergone major surgery.

These infusion solutions are made by dissolving nutritional supplements in sterile water, and are placed in a container (bottle) and administered into the patient's body via an infusion conduit connected to the container and further through a catheter. The connection between the bottle and the infusion conduit is made as follows. The bottom of the bottle is underlined, and the tip is open, and a rubber stopper fits into this opening to prevent the infusion from draining out of the bottle. A syringe needle is connected to the tip of the infusion conduit, and a flange for positioning the syringe needle is fixed to the syringe needle. The part consisting of the injection needle and flange is called the bottle needle. When the syringe needle is inserted into the rubber stopper of the bottle and the flange is brought into contact with the rubber stopper, the tip of the syringe needle reaches the inside of the bottle, the bottle and the infusion conduit are connected, and the infusion in the bottle passes through the infusion conduit. The drug is then administered into the patient's body.

However, the needle may come out of the rubber stopper due to patient movement or movement during sleep (turning over, etc.). To prevent this, a belt is placed against the flange, and the heald is hung on a column for supporting the dish. In addition, the use of thick plastic needles in place of syringe needles has also been widely attempted.

However, with conventional methods, even if it is possible to prevent the needle from being pulled out of the rubber stopper, when the needle is inserted into the rubber stopper, or when the infusion in the bottle is used up (and the needle is removed from the rubber stopper), the infusion may scatter. There are things to do.

Further, as the rubber stopper is used repeatedly, infusion fluid may leak between the rubber stopper and the needle. The above-mentioned scattered or leaked infusion fluid becomes a culture medium, which is likely to cause the propagation of bacteria, and it also travels through the infusion conduit and catheter, contaminating the line, which becomes a culture medium, which makes it easy for bacteria to propagate, and sterile management is required. Moreover, it is extremely inconvenient. Particularly when high-calorie infusions are administered directly into the blood, bacterial invasion is extremely dangerous to the patient. In order to prevent the above-mentioned bacteria and their proliferation from contaminating the infusion conduit and other areas, the operator (nurse) must constantly wipe off the above-mentioned unwanted infusion fluid.
This increases the burden on the operator.

C.8 Purpose of the Invention The present invention has been made in view of the above circumstances, and includes:
The purpose of the present invention is to provide an infusion device that can save labor by freeing an operator from working with bacteria even if the infusion is scattered or leaks.

29 Structure of the Invention The present invention provides a container for storing an infusion solution, an infusion conduit connected to the container, and a water absorption system that absorbs leakage from a connection between the container and the infusion conduit to prevent contamination due to the leakage. The present invention relates to an infusion device having a contamination prevention device molded from a synthetic polymer.

E, Example The present invention will be explained in detail below.

FIG. 15 shows a schematic diagram of the infusion device.

The high-calorie infusion TPNL (or enteral infusion ENL) is contained in a bottle 6, to the bottom of which a first infusion conduit 7 is connected. This connection will be explained in detail later with reference to FIGS. 1 and 2. The first infusion groove tube 7 includes a flow rate regulator 8;
The second infusion conduit 17, the connector 10, and the catheter (third infusion conduit) 27 are connected in sequence, and the infusions TPN and L are administered into the patient's body via the above-mentioned parts as shown in FIG.

In the figure, 27a is a catheter tip, 71 is a heart, 72 is a central vein, and 73 is a subclavian vein.

Bottle 6 and the first infusion conduit (hereinafter simply referred to as the infusion conduit)
7 is made as shown in FIGS. 1 and 2. Figure 1 shows the state in which the bottle 6 and the infusion conduit 7 are connected.
FIG. 2 is an enlarged sectional view showing the state immediately before the bottle 6 and the infusion conduit 7 are connected.

The bottom of the bottle 6 is underlined and provided with a cylindrical part 6a, an elastic plastic cap 5 is tightly fitted onto the cylindrical part 6a, and a rubber stopper 4 is fitted inside the cap 5 to secure the bottle 6.
The cylindrical portion 6a of the bottle 6 is fitted to prevent the high-calorie infusion TPNL from falling as shown in FIG. Further, the cap 5 and the rubber stopper 4 are arranged so that their lower end surfaces are located on substantially the same plane.

An elastic plastic flange 2 having a through hole is tightly fitted onto the injection needle 1.

The flange 2 consists of a distal end portion 2a that fits into the through hole of the disc-shaped contamination prevention device 3, a flange portion 2b, and a rear end portion 2C that fits into the infusion conduit 7.
The injection needle 1 and the infusion conduit 7 are connected to each other. The pollution prevention tool 3 has a sponge-like shape and has water absorbing properties.

From the state shown in FIG. 2, when the tip 2a of the flange 2 is fitted into the contamination prevention device 3, the injection needle 1 is inserted into the rubber stopper 4, and the tip of the injection needle 1 enters the bottle 6, the first As shown in the figure, the contamination prevention device 3 is in close contact with the cap 5, the rubber stopper 4, and the flange portion 2b, and the injection needle 1 whose tip has penetrated into the bottle 6
The bottle 6 and the infusion conduit 7 are connected to each other, and the high-calorie infusion TPNL in the bottle 6 is supplied into the patient's body via the injection needle 1 and the infusion conduit 7 as shown in FIGS. 15 and 16. Ru.

The pollution prevention tool 3 is formed from a polymer having high water absorption, for example, with a water absorption capacity of about 10 to 1000 times (volume ratio),
It also preferably contains an antibacterial agent. Examples of the above polymers include acrylic acid-based polymers, methacrylic acid-based polymers, acrylamide-based polymers, starch-polyacrylic acid-based polymers, ethylene oxide-based polymers, vinyl alcohol-based polymers, carboxymethyl cellulose-based polymers, and the like. Moreover, a material obtained by mixing the above-mentioned materials with a rubber or plastic monomer or composite can also be used. Examples of the antibacterial agents include silver sulfadiazine, zinc sulfadiazine, cerium sulfadiazine, silver nitrate, and gentamicin. In addition, the dimensions of the pollution prevention tool 3 are an outer diameter of 10 mm and an inner diameter of 4 mm.
, the thickness is 2fI, and the water absorption capacity is approximately 20 times.

By configuring the infusion device as described above, even if the high-calorie infusion TPNL scatters as described above or leaks from between the injection needle and the rubber stopper 3, the high-calorie infusion that comes out will not be contaminated. It is absorbed by the preventer 3 and the infusion conduit 7
The liquid does not travel to the patient side along the outer surface of the infusion tube 7, and contamination of the infusion conduit 7 and the like is prevented. Moreover, since the contamination prevention tool 3 contains an antibacterial agent, even if bacteria in the atmosphere invade, the bacteria will be killed and will not reproduce. Therefore, infusion administration can be carried out safely, and the nurse does not have to work to prevent contamination, which relieves the nurse from this troublesome work. Furthermore, since the contamination prevention tool absorbs leakage liquid and increases in volume, it is easy to tell by external observation when the leakage liquid has saturated and it is time to replace the contamination prevention device. There is no need to replace other parts of the infusion device.

FIG. 3 shows a hypodermic needle 1 with a smaller inner diameter of the contamination prevention tool 13.
The high-calorie infusion TPNL that leaks between the injection needle 1 and the rubber stopper 4 as shown by the arrow is directly fitted onto the outside of the injection needle 1 and the rubber stopper 4 without passing through the interface with the flange 2, making it more effective. An example is shown below. In this example, the contamination prevention tool 13 comes into contact with the end surface of the tip 2a of the flange 2.

In the example shown in FIG. 4, the flange 12 has a leading end portion omitted, and a contamination prevention tool 23 is fitted onto the rear end portion 12c. The high-calorie infusion leaking from between the injection needle 1 and the rubber stopper 4 is absorbed into the contamination prevention device 23 through the surface of the flange portion +2b of the flange 12 as shown by the arrow in the figure. In this example,
As shown in FIG. 5, the belt 18 is hung on the hook 19a of the support column 19, and the contamination prevention tool 23 is supported by the belt 18 and supported by the support column 19 together with the bottle 6. In this way, the weight of the infusion conduit 7 and the infusion TPNL and others therein prevents the injection needle 1 from being pulled out of the rubber stopper 4.

As shown in FIG. 6, the heald 18 has a through hole 18a into which the rear end 12c of the flange 12 (see FIG. 4) is fitted, and a plurality of through holes for hanging onto the hooks 19a of the struts 19 (see FIG. 5). It has a hole 18b, and a contamination prevention tool 23 is attached to the area around the through hole 18a.
It makes 3 cents easy.

FIG. 7 shows that the belt 28 (or 38) is extended upwardly from both sides of the contamination preventive device 33, and the hook 19a or horizontal portion 1 of the support column 19 or 19B is
An example is shown in which both ends of the belt are hung on the belt 9b to more effectively prevent the injection needle 1 from being pulled out from the rubber stopper 4 by the belt 28 or 38. Figures 9 and 11 are Heald 2
8.38 are shown respectively. The belt 28 is provided with a through hole 28a into which the rear end 12C (see FIG. 7) of the flange 12 is fitted, and on both sides of the through hole 28a there are screws 18d shown in FIG. 8 for fixing the two sides together. A pair of through holes 28C128c are provided, and one side of one of the through holes 28C has a plurality of through holes 18b for hanging onto hooks 19a (see FIG. 8) of the support column 19. The belt 38 is provided with a through hole 38a similar to the through hole 28a of the belt 28, and horizontal portions 19b (first
A plurality of through-holes 38b are provided at symmetrical positions for hanging the cable (see Figure 0). A contamination prevention device 33 is attached to the area around the through holes 28a, 38a, as in FIG. 6. Other details are the same as in FIGS. 4 to 6.

In the examples shown in FIGS. 1 and 2, as mentioned above, the dimensions of the contamination prevention tool 3 are 101 m in outer diameter, 4+n in inner diameter, and 21 m in thickness, but the dimensions of the contamination prevention tool are limited to the above dimensions. outer diameter 5~80i+i, thickness 0.5~1
An appropriate size within the range of 0.011 may be used.

The inner diameter may be an appropriate size that allows the tip or rear end of the flange or the injection needle to fit therein. Moreover, as shown in FIGS. 12 and 13, the shape of the pollution prevention tool 43.53 is as follows.
In addition to the disk shape, it can also be cylindrical or O-ring shaped. In addition, it may be in the form of a sheet or a package. Furthermore,
As shown in FIG. 14, a notch 63b extending from the through hole 63a to the outer peripheral surface is provided in the disc-shaped contamination prevention device 63, and after the injection needle is inserted into the rubber stopper and connected to the bottle, the flange is inserted. The through hole 63a is fitted through the notch 63b to the tip or rear end or the injection needle, and the contamination prevention tool 63 is inserted. In this way, the contamination prevention device 63 is set last, so that it can be attached and removed after the injection, and when the contamination prevention device 63 becomes saturated with the leaked infusion, it can be removed and a new contamination prevention device installed. can be exchanged with other fluids and fluid administration can be continued without interruption.

In addition to the embodiments described above, various modifications can be made based on the technical idea of the present invention. For example, it goes without saying that the infusion device based on the present invention can be applied not only to high-calorie infusion administration but also to the aforementioned enteral infusion administration. In addition, when attaching a branch pipe to the infusion conduit, a part of the infusion conduit is enlarged in inner and outer diameters to provide an infusion retention part, and the branch pipe is connected to this part in the same manner as in the previous embodiment. It is also possible to attach contamination prevention equipment.

As described in detail in Section 9 of the invention, the infusion device based on the present invention is equipped with a contamination prevention device that absorbs leakage fluid and prevents contamination due to leakage. Contamination of the infusion device by infusion fluid does not occur. As a result, the infusion device is always kept clean, and the operator does not have to perform the troublesome work of dropping medical infusions into the patient's body or removing contamination from the infusion device, resulting in labor savings.

[Brief explanation of the drawing]

The drawings all show embodiments of the present invention. Figure 1 is an enlarged partial sectional view of the infusion conduit connected to the bottle (infusion container), and Figure 2 is a view immediately before the infusion conduit is connected to the bottle. FIGS. 3 and 4 are enlarged partial sectional views of other examples in which an infusion conduit is connected to the bottle, FIG. 5 is a front view of FIG. 4, and FIG. 6 is an enlarged partial sectional view of the state shown in FIG. A plan view of the belt used in FIGS. 4 and 5, FIG. 7 is an enlarged partial sectional view of yet another example in which an infusion conduit is connected to a bottle, FIG. 8 is a front view of FIG. 7, and FIG. Fig. 9 is a plan view of the belt used in Figs. 7 and 8, Fig. 10 is a plan view of another example of the state shown in Fig. 7, and Fig. 11 is a plan view of the belt used in Figs.
The figures are plan views of the belts used in Figures 7 and 10, Figures 12 and 13 are cross-sectional views of pollution prevention devices according to other examples, and Figure 14 is still another example of a pollution prevention device. Perspective view: Fig. 15 is a schematic diagram of the entire infusion device, and Fig. 16 is a schematic diagram showing the procedure for administering high-calorie infusion into a patient's central vein. In addition, in the symbols shown in the drawings, 1/1'7......Injection needle 2.12.22...Flange 3.13.
23.33.43... Contamination prevention tool 5...
......Cap 6.16...Bottle (infusion container) 7.17.
......Infusion conduit 18.28...Belt 27...Catheter 73...Central vein TPNL... ...It is a high calorie infusion.

Claims (1)

[Claims] 1. A container containing an infusion, an infusion conduit connected to this container, and a contamination molded from a water-absorbing polymer that absorbs leakage from the connection between the container and the infusion conduit and prevents contamination due to this leakage. An infusion device having a preventive device.