JP2615112B2 - Infusion device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an infusion device, for example, to a medical infusion device.

B. Prior art To supply (administer) high-calorie infusions to the living body (Total Perenteral Nutrition) or to administer enteral infusions to the living body (Enteral Nutrition) to provide nutrition before and after surgery and to secure nutrition for people with gastrointestinal dysfunction. Is made. Administration of enteral infusion is a necessary procedure to promote the recovery of health and speed rehabilitation of patients with gastrointestinal dysfunction and patients who have undergone major surgery.

These infusions are obtained by dissolving nutrients in sterile water, placed in a container (bottle), and administered to a patient via an infusion conduit connected thereto and a catheter. The connection between the bottle and the infusion conduit is made as follows.
The bottom of the bottle is tapered downward and its tip is open, and a rubber stopper fits into this opening to prevent infusion of the infusion from the bottle. An injection needle is connected to the distal end of the infusion conduit, and a flange for positioning the injection needle is fixed to the injection needle. The part consisting of the injection needle and the flange is called a bottle needle. When the injection needle pierces the rubber stopper of the bottle and the flange comes into contact with the rubber stopper, the tip of the injection 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. Administered to the patient's body.

However, the injection needle may fall out of the rubber stopper due to movement of the patient or movement during sleep (turning over or the like).
To prevent this, a belt is applied to a flange, and the belt is hung on a column supporting the bottle. In addition, it has been widely attempted to use a thick plastic needle in place of the injection needle.

However, even if the conventional method can prevent the needle from being pulled out of the rubber stopper, when the needle is pierced into the rubber stopper or when the infusion in the bottle is consumed and the needle is pulled out from the rubber stopper,
Infusion may splatter. In addition, while the rubber stopper is repeatedly used, leakage of the infusion occurs between the rubber stopper and the needle. The scattered or leaked infusion becomes a culture medium, and the breeding of bacteria easily occurs. This is extremely inconvenient. In particular, when a high-calorie infusion is directly administered to blood, the invasion of the bacteria is extremely dangerous for the patient. In order to prevent the infusion conduit and other contaminations caused by the above-mentioned bacteria and their propagation, the operator (nurse) must constantly wipe off the undesired infusion, which increases the burden on the operator.

C. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and even if an infusion solution is scattered or leaks, it prevents contamination of infusion conduits and other components due to bacteria and their propagation, and enables safe operation and the like. It is an object of the present invention to provide an infusion device that can perform the above-mentioned operation and release the operator from the operation for preventing contamination and save labor.

D. Constitution of the Invention The present invention relates to a container for storing an infusion, a plug member for closing a cylindrical opening provided in the container, and a needle-like conduit pierced into the plug member from outside to reach the inside of the container. A flange member closely fitted to the needle-like conduit and mounting an infusion conduit around the needle-like conduit at a rear end;
When the infusion conduit is connected to the container, the infusion conduit is provided in close contact with the flange member around the needle-shaped conduit to absorb leakage at the connection portion and prevent contamination by the leakage. And a pollution control device made of a water-absorbing polymer.

E. Examples Hereinafter, examples of the present invention will be described.

 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, and a first infusion conduit 7 is connected to the bottom of the bottle 6. This connection will be described later in detail with reference to FIGS. The flow controller 8, the second infusion conduit 17, the connector 10, and the catheter (third infusion conduit) 27 are sequentially connected to the first infusion conduit 7.
It is administered into the patient's body 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.

The connection between the bottle 6 and a first infusion conduit (hereinafter simply referred to as an infusion conduit) 7 is made as shown in FIG. 1 and FIG. FIG. 1 is an enlarged sectional view showing a state in which the bottle 6 and the infusion conduit 7 are connected, and FIG. 2 is an enlarged sectional view showing a state immediately before the connection between the bottle 6 and the infusion conduit 7.

The bottom of the bottle 6 is tapered downward and is provided with a cylindrical portion 6a. A plastic cap 5 having elasticity is tightly fitted on the cylindrical portion 6a, and a rubber stopper 4 of the bottle 6 The high calorie infusion TPNL in the bottle 6 is prevented from falling as shown in FIG. Further, the lower end surfaces of the cap 5 and the rubber plug 4 are located on substantially the same plane.

An elastic plastic flange 2 having a through hole and having close contact is fitted on the injection needle 1. Flange 2
Is a tip 2a that fits into the through hole of the disc-shaped pollution control device 3,
It comprises a flange portion 2b and a rear end portion 2c that fits into the infusion conduit 7, and the rear end portion 2c fits into the infusion conduit 7 and the injection needle 1
And the infusion conduit 7 are conducted. The pollution control device 3 has a sponge-like water absorbing property.

When the tip 2a of the flange 2 is fitted into the pollution control device 3 from the state shown in FIG. 2, the injection needle 1 is pierced into the rubber stopper 4, and the tip of the injection needle 1 enters the bottle 6. As shown in (2), the pollution preventive device 3 is in close contact with the cap 5, the rubber stopper 4 and the flange portion 2b, and the bottle 6 and the infusion conduit 7 are electrically connected by the injection needle 1 whose tip portion has entered the bottle 6, The high-calorie infusion TPNL in 6 is supplied via the injection needle 1 and the infusion conduit 7 to the 15th
It is supplied into the patient's body as shown in FIGS.

It is preferable that the pollution control device 3 is formed of a polymer having high water absorbency, for example, about 10 to 1000 times (volume ratio), and contains an antibacterial agent. As the above polymer, acrylic acid-based, methacrylic acid-based polymer,
Acrylamide-based polymers, starch-polyacrylic acid-based graft polymers, ethylene oxide-based polymers, vinyl alcohol-based polymers, carboxymethyl cellulose-based polymers, and the like. Further, a material obtained by mixing the above materials with a rubber or plastic monomer or composite can also be used. Examples of the antibacterial agent include silver sulfadiazine, zinc sulfadiazine, cerium sulfadiazine, silver nitrate, and gentamicin. The dimensions of the pollution control device 3 are: outer diameter 10 mm, inner diameter 4 mm, thickness 2
mm, and the water absorption ratio is about 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 has come out is contaminated. It is absorbed by the preventive device 3 and does not travel to the patient side along the outer surface of the infusion conduit 7, thereby preventing contamination of the infusion conduit 7 and the like. In addition, since the pollution control device 3 contains an antibacterial agent, even if bacteria in the air enter, the bacteria do not die and do not propagate. Therefore, the administration of the infusion solution is performed safely, and the work for preventing the nurse from being contaminated is not required, and the troublesome work is released. Furthermore, since the pollution control device absorbs the leaked liquid and increases its volume, it is possible to easily know from the outside when it should be replaced by saturating the leaked liquid. It suffices to replace other parts of the infusion device.

FIG. 3 shows that the inner diameter of the pollution control device 13 is reduced and the injection needle 1 is reduced.
The high calorie infusion TPNL that has leaked between the injection needle 1 and the rubber stopper 4 as shown by an arrow is
An example is shown in which the absorption is directly and more effectively absorbed by the pollution control device 13 without passing through the interface with the interface. In this example, the pollution control device 13 comes into contact with the end face of the tip 2a of the flange 2.

In the example of FIG. 4, the front end portion of the flange 12 is omitted, and the pollution preventing tool 23 is fitted around the rear end portion 12c. Injection needle 1
The high-calorie infusion leaked from between the rubber stopper 4 and the rubber stopper 4 is absorbed by the pollution control device 23 along the surface of the flange portion 12b 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 19,
The pollution control device 23 is supported by the belt 18 and is supported by
Supported by In this manner, the injection needle 1 is prevented from being pulled out of the rubber stopper 4 by the infusion conduit 7 and the infusion TPNL and other weights therein. As shown in FIG. 6, the belt 18 is provided with a plurality of through holes 18a for engaging the rear ends 12c (see FIG. 4) of the flanges 12 and the hooks 19a (see FIG. 5) of the support posts 19. A hole 18b is provided, and a pollution control device 23 is attached to a region around the through hole 18a.
The set is easy.

FIG. 7 shows that the belt 28 (or 38) is extended upward from both sides of the pollution control device 33 and, as shown in FIG. 8 or 10, both ends of the belt are attached to the hooks 19a or the horizontal portions 19b of the columns 19 or 19B. Portion of the syringe needle 1 with belt 28 or 38
An example in which the extraction from the rubber stopper 4 is more effectively prevented is shown. 9 and 11 show the belts 28 and 38, respectively. belt
28 is provided with a through hole 28a into which a rear end portion 12c (see FIG. 7) of the flange 12 is fitted. On both sides of the through hole 28a, a pair of pins 28d shown in FIG. The through holes 28c are provided on one side of one of the through holes 28c, and a plurality of through holes 18b for hanging the hooks 19a (see FIG. 8) of the column 19 are provided. The belt 38 is provided with a through hole 38a similar to the through hole 28a of the belt 28, and on both sides thereof, a plurality of through holes 38b for hanging on a horizontal portion 19b (see FIG. 10) of a column 19B are provided at symmetric positions. It is. Through hole 28
In the area around a and 38a, a pollution control device 33 is attached in the same manner as in FIG. Others are the same as in FIGS. 4 to 6.

In the examples of FIGS. 1 and 2, as described above, the dimensions of the pollution control device 3 are 10 mm in outer diameter, 4 mm in inner diameter, and 2 mm in thickness, but the size of the pollution control device is limited to the above dimensions. However, it may be an appropriate size within the range of 5 to 80 mm in outer diameter and 0.5 to 10 mm in thickness. The inner diameter may be a front or rear end of the flange or an appropriate dimension into which the injection needle fits. Also, as shown in FIG. 12 and FIG.
May be a disk shape, a cylindrical shape, or an O-ring shape. In addition, a sheet shape or a packing shape may be used. Further, as shown in FIG.
A notch 63b reaching the outer peripheral surface from the through hole 63a is provided, and the injection needle is pierced into a rubber stopper, and this is connected to the bottle. Then, the notch 63b is formed at the front end or rear end of the flange or the injection needle. Then, the through hole 63a is fitted to the outside, and the pollution preventive device 63 is set. In this way, the pollution control device 63 is set at the end, and it is made detachable after setting, and when the pollution control device 63 becomes saturated with the leaked infusion solution, it is removed and a new pollution control device is removed. The infusion administration can be continued without interruption.

In addition to the above embodiments, various modifications are possible based on the technical idea of the present invention. For example, it goes without saying that the infusion device according to the present invention can be applied to the above-mentioned enteral infusion administration in addition to the high calorie infusion administration. Also, when attaching the branch pipe to the infusion conduit, a part of the infusion conduit is provided with an infusion stagnation portion by increasing the inner and outer diameters, and a branch pipe is connected to this portion in the same manner as in the above-described embodiment. It is also possible to attach a pollution control device.

F. Effect of the Invention As described above, the infusion device according to the present invention pierces a needle-shaped conduit from the outside into a plug member that closes a cylindrical opening of a container containing an infusion until the needle reaches the inside of the container. A flange member which is fitted closely around the needle-shaped conduit and attaches an infusion conduit around the needle-shaped conduit at a rear end thereof;
In order to absorb the leakage at the connection between the container and the infusion conduit and prevent contamination by the leakage, the contamination prevention made of a water-absorbing polymer is closely attached to the flange member around the needle-like conduit. Since the infusion device is provided, even if the infusion is scattered or leaks from between the needle-shaped conduit and the stopper member, this is absorbed by the pollution control device and travels along the outer surface of the infusion conduit. And no infusion device is contaminated by leaked infusion. as a result,
The infusion device is kept in a clean state at all times. For example, when administering a medical infusion to a patient's body, contaminants do not particularly enter the patient's body, and the infusion administration is performed safely. In addition, a troublesome operation of the operator for removing the contamination of the infusion device is not required, and the labor can be saved.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention, wherein FIG. 1 is an enlarged partial sectional view showing a state in which an infusion conduit is connected to a bottle (infusion container), and FIG. 2 is a state immediately before connecting an infusion conduit to the bottle. 3 and 4 are enlarged partial cross-sectional views of the bottle according to another example in which an infusion conduit is connected, FIG. 5 is a front view of FIG. 4, and FIG. 6 is a front view of FIG. Fig. 4 is a plan view of a belt used in Figs. 5 and 5. Fig. 7 is an enlarged partial cross-sectional view of still another example in which an infusion conduit is connected to a bottle. Fig. 8 is a front view of Fig. 7; 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 of FIG. 7, and FIG. 11 is a belt used in FIGS. 7 and 10. 12 and 13 are cross-sectional views of a pollution control device according to another example, FIG. 14 is a perspective view of a pollution control device according to still another example, and FIG. 15 is an infusion device. Overall schematic, FIG. 16 is a schematic diagram showing a procedure of a hyperalimentation administration to the patient of a central venous. In addition, in the code | symbol shown in drawing, 1 ... Injection needle 2,12,22 ... Flange 3,13,23,33,43 ... Pollution prevention tool 5 ... Cap 6,16 ... Bottle (infusion container) 7, 17 ... Infusion conduit 18, 28 ... Belt 27 ... Catheter 73 ... Central venous TPNL ... High calorie infusion.

Claims (1)

(57) [Claims] A container for storing an infusion; a plug member for closing a cylindrical opening provided in the container; a needle-like conduit pierced into the plug member from outside to reach the inside of the container; A flange member closely fitted to the needle-shaped conduit and mounting an infusion conduit around the needle-shaped conduit at a rear end;
When the infusion conduit is connected to the container, the infusion conduit is provided in close contact with the flange member around the needle-shaped conduit to absorb leakage at the connection portion and prevent contamination by the leakage. A pollution control device made of a water-absorbing polymer.