JPH025796Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a tube for micro-infusion.

[Conventional technology]

Generally, the amount of liquid in a micro-infusion infusion set is adjusted by connecting the outer surface of the tube to the inner bottom surface of a cross-sectional frame.
A so-called roller clamp was used to flatten the tube between rollers that move along the inclined grooves provided on the inner surfaces of both side walls of the frame, but the cross-sectional area of the inner hole of the tube during clamping is the same as the shape at the time of clamping. could not be kept constant for a long period of time, and there was a risk that the flow rate would go awry.
This change in flow rate has a large effect on, for example, a patient receiving a drug solution through an intravenous drip, which is dangerous, and there has been a strong demand for improvement.

Therefore, it has become common practice to use a pump in the middle of the tube to pump out a certain amount of liquid, but this not only increases equipment costs but also makes it impossible to quickly prepare for infusion treatment. There was a problem that enforcement would be troublesome.

Therefore, recently, a tube body equipped with a liquid flow rate adjusting means that can strongly compress the tube body with one side along the inner surface of the fixed frame and the other side by a movable frame that can be moved like a vise with respect to the fixed frame has been developed. Inside, a fiber bundle consisting of a single linear, thin and elastic fiber is loaded,
A tube has been proposed in which the cross-sectional area of the inner hole of the tube can be kept constant during compression (Japanese Patent Publication No. 40036/1983).

[The problem that the idea aims to solve]

However, in the case of the above-mentioned tube, the inner fibers themselves are compressed by compressing the outer surface of the tube body to adjust the gap between the fibers, and a compressor with a strong compression force like a vise is used. It cannot be compressed unless it is used. Therefore, it was not possible to use a roller clench that compresses the tube body by moving rollers with the force of the fingers.

The purpose of this invention is to solve the above-mentioned problems, and to provide a micro-infusion tube that can easily adjust the flow rate using a device such as a colo-reducer and can maintain the initial cross-sectional shape of the tube body for a long time. It is an object.

[Means to solve the problem]

In order to achieve the above object, this invention uses a roller that can move one side of the tube body along the inner bottom surface of a cross-sectional frame body and the other side of the tube body along the inclined grooves provided on the inner surfaces of both side walls of the frame body. In a micro-infusion tube equipped with a liquid flow rate adjustment means that can be compressed as if it were handled, a fiber bundle made of a single curled fiber is loaded into the tube body including the moving area of the roller, and a fiber bundle made of a single fiber that has been subjected to a curling process is loaded with The structure is such that the tube body can be compressed and its initial cross-sectional shape can be maintained for a long time.

〔Example〕

Next, an explanation will be given based on an embodiment of this invention shown in the accompanying drawings.

In FIG. 1, 1 is a tube body, and the tube body 1 is connected to a connecting tube 21 provided at the top of the drip tube 2.
and a connecting tube 22 provided at the bottom, respectively, and a bottle needle 3 is attached to the end of the tube body 1 on the top side of the drip tube 2, and a tube body on the bottom side of the drip tube 2 is attached. An intravenous needle 4 is attached to the end of 1.

Reference numeral 5 denotes a liquid volume adjusting means provided at an appropriate location in the tube body 1 (the example shows the case on the top side of the drip barrel 2, but it goes without saying that it may also be on the bottom side). As shown in the second figure, the amount adjusting means 5 includes rollers 53 that move along the inner bottom surface 52 of a cross-sectional frame 51 and inclined grooves provided on the inner surfaces of both side walls of the frame.
A so-called corrode clamp is shown in which the outer surface of the tube body 1 can be flattened between the two.

Reference numeral 6 denotes a fiber bundle loaded in the tube main body 1 corresponding to the clamping area a (this area a may be determined arbitrarily, but a range of about 10 mm is suitable) by the flow rate adjusting means 5, and The fiber bundle 6 is made by bundling single fibers (about 0.02 μm) of curled polyester or the like as shown in the third figure.

This fiber bundle 6 regulates the flow rate of the liquid passing through the inner hole of the tube body 1 by the gap formed by the entanglement of the curled portion, and also moves the roller 53 of the flow rate regulating means 5 to move the inner bottom surface 52 of the frame 51. The tube body 1 is easily deformed as shown in the fourth figure due to the pressing force when the tube body 1 is pressed between the two. It also has the function of reducing the density of the voids in the tube body 1 and maintaining the initial cross-sectional shape of the tube body for a longer period of time than the inside.

[Effect of idea]

In this way, this invention has one side of the tube body along the inner bottom surface of the cross-sectional frame, and the other side of the tube body is handled by rollers that can move along the inclined grooves provided on the inner surfaces of both side walls of the frame. This tube for micro-infusion is equipped with a liquid flow rate adjustment means that can be compressed into a liquid flow rate, and is characterized in that a fiber bundle made of a single curled fiber is loaded into the tube body including the moving area of the roller. The inner fiber bundle is formed by the entanglement of the curled parts, and has a large porosity, so that the tube body can be compressed even with a slight compression force, such as when moving it with your fingers.
Moreover, the curled portion has good resilience against compressive force, and can maintain the cross-sectional shape of the tube body at the initial stage of compression for a long time. Therefore, the flow rate of the liquid can be kept constant for a long time.

In addition, when administering drip therapy, there is no need for preparation work such as installing a pump as in the past, so preparations can be made in a short time, and emergency needs can be dealt with immediately. It has the advantage of being easy to manufacture and has various excellent effects.

[Brief explanation of the drawing]

The figures show an embodiment of this invention. Figure 1 is an overall view of the infusion set with a part of the tube body cut away, Figure 2 is an enlarged perspective view of the flow rate adjustment means, and Figure 3 is an enlarged sectional view of the main parts. , FIG. 4 is a cross-sectional view of the flattened state. DESCRIPTION OF SYMBOLS 1...Tube main body, 2...Drip tube, 5...Flow rate adjustment means, 6...Fiber bundle.

Claims (1)

[Scope of utility model registration request] Liquid flow rate adjusting means that can compress the tube body, one side of which is along the inner bottom surface of a cross-sectional frame, by being handled by rollers that can move along inclined grooves provided on the inner surfaces of both side walls of the frame. What is claimed is: 1. A tube for micro-volume infusion, characterized in that a fiber bundle made of a single fiber that has been subjected to a curling process is loaded into the tube body including the movement area of the roller.