JPH08336601A - Infusion set for fat emulsion mixing injection - Google Patents

Abstract

PURPOSE: To prevent infiltration of a liquid medicine on the side having excessive head pressure into the other container side, when one head pressure of a high-calorie infusion container and a fat emulsion container becomes excessive compared with the other head pressure. CONSTITUTION: This infusion set comprises a flexible tube 1 having an intravenous injection needle 12 and a Y-tube 11 in its both sides and the first drip tube line 2 and the second drip tube line 3 connected to connecting parts 111, 112 of the Y-tube 11, respectively. The first drip tube line 2 is provided with a drip tube 22 furnished with a communicating means 21 with a fat emulsion container (A), a roller clamp 23, and a check valve 24, and the second drip tube line 3 is provided with a drip tube 32 having a communicating means 31 with a high-calorie infusion container (B), a roller clamp 33, and a check valve 34. Entering the fat emulsion into the high-calorie infusion container (B) and the entering of the high-calorie infusion into the fat emulsion container (A) are blocked by the check valves 34 and 24, respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an infusion set for mixed injection of fat emulsion. More specifically, the present invention relates to a fat emulsion mixed injection infusion set in which a high calorie infusion (amino acid and glucose) and a fat emulsion are mixed and infused simultaneously.

[0002]

2. Description of the Related Art Many medicinal solutions such as glucose solution, physiological saline, electrolytes, etc. are generally injected into a patient's vein by using an infusion set from a bottle containing the infusion solution. In addition, additional or supplemental medicinal solution may be injected into the body during the continuous drip treatment. In this case, it is preferable to inject two or more drug solutions into a patient's vein with one injection needle in order not to increase the physical pain of the patient. In order to administer a second or additional drug solution to a patient without performing such a second intravenous puncture, a rubber elastic body piercing part (referred to as a compound injection part) for co-injecting the drug solution is provided. The infusion set provided is used. However, in an infusion set having a mixed injection section, a nurse or a doctor needs to be attached in front of the infusion set while injecting an additional drug solution through the mixed injection section.

Therefore, in order to eliminate such restraint of nurses and doctors, the flow rates of two different drug solutions can be set independently, and the flow of the other drug solution is automatically controlled while one drug solution is being administered. And a piggyback type administration device (Japanese Patent Application Laid-Open No. 56-100064) capable of automatically restarting the flow of the blocked chemical liquid at an accurate flow rate without any intervention operation. A flexible liquid flow tube downstream of the part where air may enter is provided with a portion having an inner diameter that is narrower than the inner diameters of other parts, so that air is sucked into the liquid flow tube. IV infusion set designed to prevent
No. 70) is proposed.

The former piggyback type administration device is provided with a first liquid source and a second liquid source, a first tube, a second tube, a Y-tube, and an injection needle for inserting into a vein of a patient. And a puncture needle for connecting to the first liquid agent source and the second liquid agent source, respectively, and a hydrophilic microporous membrane inside thereof. A drip tube is provided. The hydrophilic microporous membrane functions as a check valve that allows liquid to pass downstream when wet but prevents air or liquid from passing upstream. On the other hand, the latter intravenous infusion set has almost the same configuration as the former piggyback type administration device, but does not include a hydrophilic microporous membrane inside the drip tube, and
A check valve is provided downstream of the tube to prevent air from entering the patient's vein by providing a narrowed bore.

[0005]

However, when a fat emulsion is co-injected into a high calorie infusion using these conventional infusion sets to administer to a patient, the former piggyback type administration device uses one container. The water head pressure of the container may become excessive compared to the water head pressure of the other container.In that case, the chemical solution in one container flows back to the other container side and permeates the hydrophilic microporous membrane, resulting in The problem was that the porous microporous membrane did not function as a check valve. Also, in the latter infusion set,
For example, if there is no check valve in the line for high calorie infusion containers, a drug with a high specific gravity (high calorie infusion) is injected first, and the head pressure of the fat emulsion container is compared to that of the high calorie infusion container. In some cases, the fat emulsion flowed back through the line connected to the high-calorie infusion container and entered into the high-calorie infusion container. As a result, the time during which the fat emulsion and the high-calorie infusion are in a mixed state becomes long, so that the particles in the fat emulsion and the high-calorie infusion may react to increase the particle size. When a fat emulsion having a particle size enters a cerebral blood vessel through a blood vessel, this may cause a cerebral thrombosis, which is a problem.
When the amount of fat emulsion to be mixed is small, conversely, the head pressure of the fat emulsion container becomes excessive compared to the head pressure of the high-calorie infusion container, and the high-calorie infusion enters the fat emulsion container. Sometimes caused the problem. The present invention has been made in view of such circumstances, and even if the head pressure of one of the high-calorie infusion container and the fat emulsion container becomes excessive compared to the head pressure of the other, the head pressure becomes excessive. It is an object of the present invention to provide an infusion set in which the liquid medicine on one side does not enter the other container side.

[0006]

In order to solve the above problems, the present invention provides a flexible tube having a venous needle at one end and a Y-shaped tube at the other end, and a Y of the flexible tube. A first and a second drip tube line connected to a letter tube, the first
The drip tube line is a means for communicating with the fat emulsion container and the drip tube,
The flow control means and the check valve are provided in this order, and the second drip tube line is provided with the communication means with the high calorie infusion container and the drip tube, the flow control means and the check valve in this order. The infusion set for mixed injection of fat emulsion is used.

[0007]

According to the above construction, even if one of the water head pressure of the high calorie infusion container and the water head pressure of the fat emulsion container becomes excessive with respect to the other, the check valve of the drip tube line on the other side allows Entry into the other drug solution container is blocked. Further, since a check valve is provided on both the first drip tube line and the second drip tube line, either drip tube line may be connected to the fat emulsion container.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is an explanatory diagram showing a fat emulsion mixed injection infusion set of the present invention. As shown in FIG. 1, the infusion set for fat emulsion mixed injection according to the present invention includes a flexible tube 1 having a venous needle 12 and a Y-shaped tube 11 at both ends, and a connecting section 111, 112 of the Y-shaped tube 11, respectively. The first drip tube line 2 and the second drip tube line 3 are connected to each other. Then, the first drip tube line 2 is provided with a drip tube 22 having a communication means 21 for communicating with the fatty acid solution A, a roller clamp 23 and a check valve 24 in this order, and the second drip tube line 3 is a high calorie infusion solution. A drip tube 32 having a means 31 for communicating with the container B, a roller clamp 33, and a check valve 34 are provided in this order. In addition, 13 is an octopus tube for capturing the air contained in the chemical solution.

When using the infusion set for mixing fat emulsion, the first and second drip tube lines 2 and 3 are connected to the fat emulsion container A and the high-calorie infusion container B, respectively.
The air contained inside is discharged by priming in advance. The venous needle 12 of the flexible tube 1 is inserted into the vein of the patient, the roller clamp 23 which is the flow rate control means of the first drip tube line 2 is opened, and a predetermined amount of fat per unit time is fed from the fat emulsion container A. When the emulsion is allowed to drip into the drip tube 22, and the second drip tube line 3 also opens the roller clamp 33 in the same manner so that the high calorie infusion solution is dripped from the high calorie infusion container B into the drip tube 32, Check valves 24 and 34 for fat emulsion and high calorie infusion, respectively.
Through the Y-tube 11 and mixed there, and injected into the patient's vein through the tacho tube 13 of the flexible tube 1 and the venous needle 12.

The drip tubes 22 and 32 are not necessarily provided with the communication means (hereinafter referred to as spikes) 21 and 31, but in the figure, the spikes 21 and 31 are integrally attached. Further, roller clamps 23 and 33 are used as the flow rate control means. Incidentally, Y
One or both of the connecting portions 111 and 112 of the character tube 11 to the first and second drip tube lines 2 and 3 may be sealed with a rubber elastic member that can be pierced by an injection needle. Octopus tube 1
Although 3 is not always necessary, since it is possible that the chemical solution contains a large amount of air, it is safe to install it. As the check valves 24 and 34, duck bill type valves are usually adopted, but the check valves are not necessarily limited, and for example, ball valves and umbrella type valves can also be adopted.

[0011]

As is apparent from the above description, by adopting the fat emulsion mixed injection infusion set of the present invention, the fat emulsion enters the high-calorie infusion container and the high-calorie infusion container becomes a fat emulsion container. Can be reliably prevented from entering. Further, since the check valves are provided in both drip lines, it is not necessary to check each drip line connected to the fat emulsion container one by one, and it is easy to connect the drip line to the drug solution container.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a fat emulsion mixed injection infusion set of the present invention.

[Explanation of symbols]

 1 flexible tube 11 Y-shaped tube 12 intravenous needle 2 first drip tube line 22 drip tube 23 roller clamp 24 check valve 3 second drip tube line 32 drip tube 33 roller clamp 34 check valve A fat emulsion container B high calorie infusion container

Claims (1)

[Claims] 1. A flexible tube having a venous needle at one end and a Y-shaped tube at the other end, and first and second drip tube lines connected to the Y-shaped tube of the flexible tube. , The first drip tube line is provided with a communication means with the fat emulsion container, a drip tube, a flow rate control means and a check valve in this order, and the second drip tube line is a communication means with the high calorie infusion container and the drip tube. ,
An infusion set for mixed injection of fat emulsion, comprising a flow control means and a check valve in this order.