JPH0130196Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an infusion set, and more particularly to an infusion set that can be quickly prepared for infusion administration.

Infusion sets are commonly used when administering relatively large amounts of medicinal solutions or infusions (hereinafter referred to as medicinal solutions) parenterally, such as 500 ml or 1000 ml.

There are only two types of IV drip sets currently available on the market: one with a drip tube of approximately 15 drops per ml and one with a drop count of 60 drops per ml (for children). The number of drips per given volume is determined by the thickness (inner diameter) of the opening needle that opens into the drip tube, and is 15 drops/ml.
The inner diameter of the 60 drops/ml type is approximately 0.8 mm, and the known drip set has one line of flow path from the liquid collection needle to the drip tube, and the open needle also has an inner diameter of approximately 0.6 mm. It only has one of the sizes listed above.

However, in reality, the dosage of catecholamines as an acute circulatory insufficiency improving agent is limited to μ.
Some drugs are strictly controlled in g/Kg/min units, and for the administration of such drug solutions, the opening needle should be made even thinner (for example, 0.2 mm) to increase the number of drops per ml. It is desirable to use a high-precision IV set with a large number of doses (eg, 120 drops) and easier fine-tuning of the dose. However, with such an infusion set having a thin opening needle, it takes an unexpectedly long time to fill (fill) the infusion set with liquid medicine during the preparation stage for infusion administration, making it unsuitable for use in treatment settings. It becomes inconvenient. of course,
This difficulty can be easily overcome by designing the open needle to be thicker than the above-mentioned open needle, but on the other hand, increasing the diameter of the open needle makes it difficult to finely adjust the dose and administration rate, so this is also preferable. do not have.

The present invention was proposed under these circumstances, and its purpose is to improve the preparation work for intravenous administration and to improve the accuracy of administering intravenous medicine. The aim is to provide a set of

The configuration of the present invention will be specifically explained below.

The infusion set of the present invention has a large diameter flow path 3 from one liquid collection needle 1 to an infusion tube 2, as illustrated in the drawing.
Branched into two small-diameter channels, and the large-diameter side flow path 32
A flow rate regulator 6 is attached to the. Each of the channels 31 and 32 separately opens into the drip tube 2 through open needles 41 and 42, respectively. Open needle 41, 4
2 may be made of any stainless steel tube with an inner diameter of about 0.2 to 0.8 mm, depending on the size of the flow paths 31 and 32 (for example, 0.2 mm and 0.6 mm).

The structure below the drip tube 2, that is, from the drip tube 2 through the channel 5 to the octopus tube (not shown) at the tip of the drip set, is exactly the same as the known one.

The channels 31, 32 and 5 are preferably transparent flexible tubes. Further, the flow rate regulators 6 and 7 in the flow path 32 and the flow path 5 may be of any type, and a pinch-type pot is generally preferred as it is functional and economical. Regarding this flow rate regulator, one more one may be attached to the flow path 31 portion instead of the flow rate adjuster 7 in the flow path 5 portion, or separately from it, if desired.
Generally, the administration rate can be adjusted more accurately and quickly by using a flow rate regulator between a liquid collection needle and an infusion tube than by using a flow rate regulator between an infusion tube and an octopus tube.

The usage of the inventive drip set is as follows.

As illustrated in the drawings, first, the liquid collection needle 1 and air needle 9 of the inventive drip set are inserted into the rubber stopper of the vial bottle 8 containing liquid medicine, and then the flow rate regulator 7 is closed and the flow path 3 and the drip tube 2 are inserted. The process of filling a predetermined volume (up to the dotted line in the figure) and the inside of the flow path 5 with medical fluids is exactly the same as in a known drip set. However, in this case, in the drip set of the present invention, the flow path 3 from the liquid collection needle 1 to the drip tube 2 is configured in two series, so the flow rate regulator 6 attached to the large diameter side flow path 32 is If you open it and operate it, the above work will be done quickly. Next, when the flow rate regulator 7 is opened, the area from the regulator 7 to the octopus tube (not shown) at the tip is filled with the medicinal liquid. In this state, the channel 32 is completely closed, and the actual administration of liquid medicines is performed using only one of the small-diameter channels 31 and its open needle 41.
Adjustment of the administration speed of the medicinal liquid is performed by appropriately operating the flow rate regulator 7 while checking the dripping status of the medicinal liquid from the open needle 41.

As detailed above, in this invention, the flow path from the liquid collection needle to the drip tube is configured into two lines, one with a large diameter and one with a small diameter, so it is possible to quickly fill the drip set with liquid medicine before administration. It is possible.
In particular, as shown in the figure, an infusion set in which one of the open needles connected to the two series of channels is made thinner and the other is thicker, and a flow rate regulator is attached to the larger diameter channel, is suitable for use with actual drug solutions. By using a small-diameter flow path (i.e., an open needle with a large number of drops per ml), the amount and rate of administration can be controlled more accurately, and the infusion set during the preparation stage can be easily controlled. By using both the large-diameter and small-diameter channels, filling of the liquid medicine can be carried out within a very short time. Therefore, the infusion set configured in this manner is particularly suitable for administering, for example, catecholamines as the acute circulatory failure improving agent.

[Brief explanation of drawings]

The drawing shows the main parts of the infusion set of the present invention in use. 1: Liquid collection needle, 2: Infusion tube, 3: Channel, 4: Open needle, 5: Channel, 6: Flow rate regulator, 7: Flow rate regulator, 8: Vial bottle.

Claims (1)

[Scope of utility model registration request] An infusion set in which the flow path from one liquid collection needle to the infusion tube is branched into two lines, large diameter and small diameter, and a flow rate regulator is attached to the large diameter flow path.