JP3240613B2 - Infusion set for fat emulsion co-infusion - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an infusion set for fat emulsion co-infusion. More specifically, the present invention relates to an infusion set for fat emulsion co-infusion, in which a high calorie infusion (amino acid and glucose) and a fat emulsion are co-injected so that they can be infused simultaneously.

[0002]

2. Description of the Related Art Many drug solutions, such as glucose solution, physiological saline, electrolytes, and the like, are generally injected into a patient's vein from a bottle containing an infusion using an infusion set using gravity. In some cases, an additional or supplemental drug solution may be injected into the body during an infusion treatment. In this case, it is preferable to inject two or more drug solutions into the vein of the patient with a single injection needle in order not to increase the physical distress of the patient. In order to administer the second or additional drug solution to the patient without performing the second vein insertion, a piercing portion (referred to as a co-injection portion) of a rubber elastic body for co-injecting the drug solution is used. The provided infusion set is used. However, in an infusion set provided with a co-infusion unit, a nurse or doctor must be cut off in front of this infusion set while injecting an additional drug solution through the co-infusion unit.

[0003] In order to eliminate such restrictions of nurses and doctors, the flow rates of two different chemicals can be set independently, and the flow of the other chemical is automatically controlled during administration of one chemical. A piggyback-type administration device (Japanese Patent Application Laid-Open No. 56-100604), which can automatically shut off the flow of the interrupted drug solution at an accurate flow rate without intervening operation, The flexible liquid flow tube downstream of a portion where air may enter may be provided with a portion having an inner diameter that is smaller than the inner diameter of the other portion so that air is sucked into the flow tube. Intravenous infusion set (Japanese Patent Publication No. 60-540)
No. 70) has been proposed.

[0004] The former piggyback type administration device has a first liquid source and a second liquid source, a first tube, a second tube, a Y-shaped tube, and an injection needle for penetrating a vein of a patient at a lower end. And a puncture needle for connection to the first liquid source and the second liquid source, respectively, and a hydrophilic microporous membrane inside the upper end of the first tube and the second tube. A drip tube is provided. The hydrophilic microporous membrane functions as a check valve that allows liquid to flow downstream when wet, but prevents air or liquid from flowing upstream. On the other hand, the latter intravenous infusion set has substantially the same configuration as the former piggyback type administration device, but does not include a hydrophilic microporous membrane inside the drip tube, and
A non-return valve is provided downstream of the tubing to prevent air from entering the patient's vein by providing a narrowed bore.

[0005]

However, when an attempt is made to mix a high-calorie infusion with a fat emulsion and administer it to a patient using these conventional infusion sets, the former piggyback-type administration device uses one container. Head pressure of the other container may be excessively large, in which case, the drug solution in one container flows back to the other container side and permeates the hydrophilic microporous membrane, and The problem is that the porous microporous membrane does not function as a check valve. In the latter infusion set,
For example, when there is no check valve in the line of the high calorie infusion container, a drug with a higher specific gravity (high calorie infusion) is injected first, and the head pressure of the fat emulsion container is compared with that of the high calorie infusion container. In some cases, the fat emulsion became excessive, and flowed back through the line connected to the high-calorie infusion container to enter the high-calorie infusion container. And, as a result, since the fat emulsion and the high calorie infusion are mixed for a longer time, the fat emulsion and the grapes in the high calorie infusion may react to increase the particle size, and this large When a fat emulsion having a particle diameter enters a cerebral blood vessel or the like through a blood vessel, this may cause a cerebral thrombus, which is a problem.
In addition, when the amount of the fat emulsion to be co-injected is small, the head pressure of the fat emulsion container becomes excessively large compared to the head pressure of the high-calorie infusion container, and the high-calorie infusion enters the fat emulsion container. Sometimes caused problems. 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 is too high compared to the other, the head pressure becomes excessive. It is an object of the present invention to provide an infusion set in which a drug solution on the other side does not enter the other container side.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a flexible tube having a venous needle at one end and a Y-tube at the other end; A first and a second drip tube line connected to the
The drip tube line is a means for communicating with the fat emulsion container and a drip tube,
The flow control means and the check valve are provided in this order, and the second drip 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. Infusion set for fat emulsion mixed injection is adopted.

[0007]

According to the above construction, even if one of the head pressure of the high-calorie infusion container and the head pressure of the fat emulsion container becomes excessive with respect to the other, the check valve of the other drip tube line is used to check one of the drug solutions. The entry into the other chemical solution container is prevented. In addition, since a check valve is provided in each of the first and second drip tube lines, either of the drip tube lines may be connected to the fat emulsion container.

[0008]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view showing the infusion set for fat emulsion co-infusion of the present invention. As shown in FIG. 1, the infusion set for fat emulsion co-infusion of the present invention includes a flexible tube 1 having a venous needle 12 and a Y-tube 11 at both ends, and connecting portions 111 and 112 of the Y-tube 11. It comprises a first drip tube line 2 and a second drip tube line 3 which are connected. The first drip line 2 is provided with a drip tube 22 provided with a communicating 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 provided with a high calorie infusion. A drip tube 32 having a communicating means 31 with the container B, a roller clamp 33 and a check valve 34 are provided in this order. Reference numeral 13 denotes an octopus tube for capturing air contained in the chemical solution.

When using the infusion set for fat emulsion co-infusion, the first and second drip tube lines 2 and 3 are connected to a fat emulsion container A and a 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, and the roller clamp 23, which is the flow control means of the first drip tube line 2, is opened to release a predetermined amount of fat from the fat emulsion container A per unit time. When the emulsion is allowed to drip into the drip tube 22 and the second drip line 3 is similarly opened with the roller clamp 33 so that the high-calorie infusion is dropped from the high-calorie infusion container B to the drip tube 32, The fat emulsion and the high calorie infusion are checked valves 24 and 34 respectively.
Through the Y-tube 11, where it is mixed and infused into the vein of the patient through the octopus tube 13 and the venous needle 12 of the flexible tube 1.

The drip tubes 22 and 32 do not necessarily need to be provided with communicating means (hereinafter referred to as spikes) 21 and 31. In the drawing, the spikes 21 and 31 are integrally attached. Further, roller clamps 23 and 33 are employed as flow control means. Note that Y
One or both of the connecting portions 111 and 112 of the figure tube 11 with the first and second drip tube lines 2 and 3 may be sealed with a rubber elastic member that can be pierced with a syringe needle. Octopus tube 1
3 is not always necessary, but it is safer to attach it because the chemical solution may contain a lot of air. Normally, the check valves 24 and 34 are of a duck bill type, but are not necessarily limited thereto. For example, a ball valve or an umbrella type can be used.

[0011]

As is apparent from the above description, the use of the infusion set for fat emulsion co-infusion of the present invention allows the fat emulsion to enter the high-calorie infusion container and the high-calorie infusion to the fat emulsion container. Can be reliably prevented from entering. Further, since the check valves are provided on both the drip lines, it is not necessary to check each drip tube line connected to the fat emulsion container, and it is easy to connect the drip tube line to the drug solution container.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an infusion set for fat emulsion co-infusion of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flexible tube 11 Y-tube 12 Intravenous needle 2 1st drip tube line 22 drip tube 23 Roller clamp 24 Check valve 3 2nd drip tube line 32 Drip tube 33 Roller clamp 34 Check valve A Fat emulsion container B high calorie infusion container

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A61M 39/00 A61M 5/14 345 A61M 39/02 A61K 9/08 A61K 9/107

Claims (1)

(57) [Claims] 1. A flexible tube having a venous needle at one end and a Y-tube at the other end, and first and second infusion tube lines connected to the Y-tube of the flexible tube. A first drip line comprises a means for communicating with the fat emulsion container and a drip tube, a flow control means and a check valve in this order, and a second drip line comprises means for communicating with the high calorie infusion container and the drip tube. ,
An infusion set for fat emulsion co-infusion, comprising a flow control means and a check valve in this order.