JPH0613742Y2 - Infusion set - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an infusion set used when injecting an infusion containing a component such as a vitamin preparation that is easily decomposed and deteriorated by light into a patient. In particular, it is an infusion set in which the liquid transfer tube and the drip tube forming the infusion set have a light shielding property.

[Problems to be Solved by Conventional Techniques and Inventions] The infusion set currently used is a liquid introducing needle, a drip tube made of a transparent synthetic resin, and a liquid made of a transparent flexible synthetic resin for an infusion needle. It is configured by connecting with a transfer tube. When injecting an infusion solution into a patient, a liquid introduction needle was connected to a container in which the infusion solution was sealed, and was infused into the patient via a drip tube, a liquid transfer tube, and an infusion needle.

Vitamin A (retinol palmitate), vitamin B ₁ (thiamine hydrochloride), vitamin B ₂ (lipoflavin phosphate), vitamin B ₆ (pyridoxine hydrochloride), vitamin C (ascorbic acid), vitamins K ₁ , K ₂ during infusion When containing vitamins, etc., because these substances are easily decomposed and deteriorated by light (especially easily decomposed by ultraviolet rays with a short wavelength of 290 to 450 nm), the transfusion container should be covered with a light-shielding cover. Was going on. However, when the infusion must be performed over a long period of time, the infusion stays in the drip tube and the liquid transfer tube forming the infusion set for a long time. As described above, since the drip tube and the liquid transfer tube are made of transparent synthetic resin,
The vitamins in the infusion solution were likely to be decomposed or deteriorated by light.

Further, since the drip tube is formed compactly, it can be covered with a light-shielding cover or the like to block light as in the case of the infusion container, but the liquid transfer tube is 1 m in total.
Since it is used over the front and rear lengths, and a drip tube, a roll clamp, etc. are arranged in the middle, it is difficult to cover with a light-shielding cover or the like.

Therefore, the present inventor has made extensive studies in order to solve the above problems, and as a result, arrived at the next inventor.

[Means for Solving the Problems] The first aspect of the present invention is an infusion set used when injecting an infusion into a patient, which includes a liquid introduction needle, a drip tube, a bubble eliminator, and a space between them. The liquid transfer tube is configured to be connected to the liquid transfer tube, and the liquid transfer tube provides an infusion set having a light shielding property by any one of the following means.

By adding an anti-UV agent and forming it into a tubular shape by extrusion molding, by extruding into a tubular shape by extrusion molding, then applying an anti-UV agent, and using a twin-screw extrusion method Flexible synthetic resin layer, means for forming outer layer on a synthetic resin layer having a light-shielding property by adding a colored pigment or an ultraviolet ray inhibitor that can block ultraviolet rays, and adding a colored pigment or an ultraviolet ray inhibitor that blocks a synthetic resin tube from ultraviolet rays Means for immersing and coating in a liquid synthetic resin layer described above. As a second invention, the infusion set according to the first invention, wherein the drip tube is according to the first invention. The present invention provides an infusion set having a light-shielding property.

[Function] Since the liquid transfer tube and the drip tube that form the infusion set are provided with light-shielding properties, the infusion solution containing a substance that is unstable to light such as vitamin preparations can be used for a long time. Can pass through the liquid transfer tube in a stable state, and efficient infusion can be performed.

Example 1 Example 1 FIG. 1 shows a schematic view of an infusion set 1 of the present invention. The infusion set 1 is composed of a liquid introduction needle 2 in which a synthetic resin or metallic needle tube is implanted, a drip tube 3 made of synthetic resin, a bubble remover 4, and an infusion needle 5, and each of these components is a liquid. It is connected via a transfer tube 6. Reference numeral 8 is a roll clamp for adjusting the flow rate of the infusion solution, and 9 is a rubber tube.

The liquid transfer tube 6 is made of a flexible synthetic resin, and is formed so as to maintain the light shielding property by the following means, for example. As a first means, an ultraviolet ray inhibitor such as hydroxybenzophenone, benzotriazole or ethyl salicylate is added to a pellet of a flexible synthetic resin, and the pellet is molded into a tube by extrusion molding.

As a second means, it may be formed by extruding a flexible synthetic resin into a tube shape by extrusion molding, and then applying the above-mentioned ultraviolet protection agent.

By the above first and second means, it is possible to block ultraviolet rays having a wavelength of 290 to 450 nm.

As a third means, flexible synthetic resin pellets absorb predetermined wavelengths as shown in Tables 1, 2, and 3 (290 to 45).
It can be formed by adding a colored pigment (which blocks ultraviolet rays of 0 nm) and extruding it into a tube shape. As another embodiment of the liquid transfer tube 6, as shown in FIG.
The outer peripheral surface may be covered with the light-shielding layer 7.

As a method for forming the light-shielding layer 7 on the liquid transfer tube 6, for example, a flexible synthetic resin is formed by a known biaxial extrusion molding method, and the inner layer is formed as a normal transparent flexible synthetic resin layer and the outer layer is formed as an outer layer. A method of forming a synthetic resin layer having a light-shielding property by adding a colored pigment or an anti-ultraviolet agent capable of blocking ultraviolet rays of 290 to 450 nm, or coating by immersing a flexible synthetic resin tube in a liquid synthetic resin layer There is a way to do it.

Alternatively, the surface may be subjected to a chemical treatment such as plasma treatment to modify the surface so as to have a light-shielding property.

The layer 7 having a light-shielding property is preferably formed so as not to come into contact with the inside of the liquid flow path 10 of the liquid transfer tube 6 when formed by adding the above-mentioned colored pigment and the ultraviolet ray inhibitor.
By forming in this way, the above-mentioned additive does not elute into the infusion solution, which is hygienic.

Further, the light-shielding layer 7 needs to be transparent to some extent so that the bubbles existing in the liquid in the liquid transfer tube 6 can be visually observed.

Example 2 The drip tube 3 constituting the above-mentioned infusion set 1 is also made of synthetic resin, and the same light-shielding property can be maintained by the same means as the liquid transfer tube 6 described above.

[Advantages of the Invention] As described above, in the infusion set 1 of the present invention, since the liquid transfer tube 6 and the drip tube 3 have a light-shielding property, an infusion containing a light-labile substance such as a vitamin preparation. The liquid transfer tube 6 in a stable state
It can be injected into the patient's body via the, and accurate and efficient infusion can be performed.

[Brief description of drawings]

FIG. 1 is a schematic view of an infusion set, and FIG. 2 is a schematic view showing an embodiment of a liquid transfer tube. In the figure, 1 is an infusion set, 2 is a liquid introduction needle, 3 is a drip tube,
4 is a bubble remover, 5 is an infusion needle, 6 is a liquid transfer tube,
7 is a light-shielding layer.

Claims (2)

[Scope of utility model registration request] 1. An infusion set used when injecting an infusion into a patient, comprising a liquid introduction needle, a drip tube, a bubble eliminator, and a liquid transfer tube connected between them.
The liquid transfer tube is provided with a light shielding property by any one of the following means. By adding an anti-UV agent and forming it into a tubular shape by extrusion molding, by extruding into a tubular shape by extrusion molding, then applying an anti-UV agent, and using a twin-screw extrusion method Flexible synthetic resin layer, means for forming outer layer on a synthetic resin layer having a light-shielding property by adding a colored pigment or an ultraviolet ray inhibitor that can block ultraviolet rays, and adding a colored pigment or an ultraviolet ray inhibitor that blocks a synthetic resin tube from ultraviolet rays Means for coating by immersing in a liquid synthetic resin layer 2. The infusion set according to claim 1, wherein the drip tube is provided with a light-shielding property by the means according to any one of claims 1 and 2.