JP2000014745A - Instillation cylinder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To confirm visually a correct amount of storage into an instillation cylinder by providing a display means indicating the correct amount of storage in an instillation cylinder, in prescribed positions of a transparent cylinder having an inlet from which a liquid drips out and an outlet of the liquid. SOLUTION: The instillation cylinder 1 is composed of an inlet 2 provided mainly in the upper portion and an outlet provided in the lower portion, and a transparent cylinder 4 having appropriate elasticity. The outlet 3 is connected to a lower guide tube 6. An instillation opening 7 continuing from the inlet is formed upward in the cylinder 4. A circular line (display means) is formed along the periphery vertical to the direction of dripping from the instillation opening 7 in the center of the cylinder 4. This circular line is formed of an upper circular line 5a and a lower circular line 5b. Both lines 5a, 5b are formed within L/4 to L/2 from the lower end of the storage against an area L where a liquid can be stored, thereby maintaining a correct storage and reducing time and effort of pumping.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to one of the constituent elements of an infusion set or a blood transfusion set used for administering a liquid into a patient's body, and is provided in the middle of a conduit of the infusion / transfusion set. About a drip tube.

[0002]

2. Description of the Related Art When a drug solution or blood is administered to a patient, an infusion set and a blood transfusion set have been generally used. These administration sets mainly consist of conduits for flowing liquid, injection needles for puncturing the body, bottle needles for connecting to bags, etc., in addition to these, clamps for adjusting the flow rate. And a drip tube for preventing air from flowing into the living body is attached to the conduit.

[0003] In the infusion set, as described above, the drip tube has a role of preventing air from flowing into the living body, and a role of checking how much the flow rate of the conduit has changed by adjusting the clamp by dropping the liquid in the drip tube. Also have. Also,
In a transfusion set, a filtration net is also provided in the drip tube to remove clots. As described above, in the infusion / blood transfusion set, the infusion tube is a component that has a very important role.

[0004] Many patents and utility models have been filed for drip tubes, but most of them have been devised so that air does not flow into a conduit connected to the lower part when liquid flowing into the drip tube runs out. It was about a float valve. In particular, there are few ideas about the shape, and the drip tube has maintained its substantially cylindrical shape for a long time.

[0005]

By the way, in the conventional infusion / blood transfusion set, when storing the liquid in the drip tube, pumping (pressing and restoring the drip tube to prevent air from flowing into the lower conduit). The liquid is stored in the drip tube. Therefore, especially in the case of a drip tube made of a solid material, it takes time and effort to store the liquid in the drip tube, and this has been a considerable problem for medical staff who perform such operations every time. Also,
If a large amount of liquid is stored in the drip tube, there is a drawback that it is difficult to see the dripping state of the liquid.

Accordingly, it is an object of the present invention to firstly provide a drip tube having a means for indicating an appropriate storage amount in a drip tube, and secondly, to quickly provide the above-mentioned proper storage amount in a drip tube. The purpose of the present invention is to provide a drip tube capable of flowing into a drip tube.
Another object of the present invention is to provide a medical infusion device such as an infusion / blood transfusion set provided with the above-mentioned drip tube.

[0007]

According to the present invention, there is provided a transparent cylinder having an inlet for discharging liquid and an outlet for liquid, and an appropriate storage amount in the drip cylinder is indicated at a predetermined position of the cylinder. By a drip tube characterized by forming a display means,
An appropriate amount of liquid can be stored in the drip tube, and the above problem has been solved. The display means is formed along a peripheral surface of the drip tube perpendicular to the direction in which the liquid is dropped. Therefore, it is easy to confirm an accurate appropriate amount of the liquid level in the drip tube. Further, if the position of the peripheral surface on which the display means is formed is within the range of 1/2 to 1/4 of the liquid storage area in the drip tube, air may flow into the lower conduit, or the liquid in the drip tube may be inflated. Can be operated without making it difficult to see the dripping of water.

Alternatively, the position where the display means is formed may be determined by an appropriate storage amount in the drip tube. For example, the infusion rate used in an infusion set is usually 1 to 500 ml / mi.
n, and the inner diameter of the drip tube is 10 to 20 mm,
Considering the safety factor so that air does not flow into the lower conduit, the appropriate storage amount is 0.7 ml or more. Conversely, if the storage amount is too large, as described above, time and labor are required for pumping, and it becomes difficult to see the dripping state in the drip tube. The length L of the storage area of the drip tube shown in FIG. 1 is usually 40 to 60 mm.
Therefore, the appropriate storage amount is 10 ml or less. Then, the range of the general appropriate storage volume of the infusion set is 0.7
In the case of a normal cylindrical drip tube, the position of the display means is determined by the inner diameter of the drip tube. In addition, the display means may indicate the range of the appropriate storage amount by displaying
One may be formed, or may be formed at an approximate middle position in the range of the appropriate storage amount.

In the present invention, a reduced-diameter portion having a predetermined length may be provided at the lower portion of the inner wall of the drip tube, and the upper end of the reduced-diameter portion may be substituted for the display means. By providing the reduced diameter portion at the lower portion of the inner wall of the drip tube, a smaller amount of liquid can be realized with respect to the height of the liquid surface, and the priming time can be reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a drip tube provided with two display means. The drip tube 1 of the present embodiment mainly includes an inlet (inlet) 2 provided at an upper portion and an outlet (outlet) at a lower portion.
3 and a transparent cylinder 4 having an appropriate elasticity. Outlet 3 is connected to lower conduit 6. A drip port 7 extending from the inflow port 2 is formed above the inside of the cylindrical body 4. Two annular lines (display means) 5 are formed along the peripheral surface at the center of the cylinder 4 and perpendicular to the direction in which the liquid is dropped from the drip port 7. The annular line 5 may be formed on the entire circumference, or may be partially formed on the circumference. The display means is not particularly limited to a line, but may be a rib or a groove. If L shown in FIG. 1 is a liquid storage possible area,
Both the upper annular line 5a and the lower annular line 5b are formed within the range of L / 4 to L / 2 from the lower end of the liquid storage.

FIG. 2 shows a different embodiment of the present invention. FIG.
As in the example of FIG. 1, the drip tube 1 is composed of an inlet 2, an outlet 3, a cylinder 4, a drip port 7, and the like. Reduced diameter portion 8 formed at lower part
Is the upper end 8a. As a result, even in the case of a drip tube having a large inner diameter, it is possible to maintain an appropriate storage amount without positioning the stored liquid level below, thereby reducing the labor and time of pumping.

As in the previous embodiment, assuming that L in FIG. 2 is a liquid storage possible area, the position of the upper end 8a of the reduced diameter portion is formed within the range of L / 3 to L / 2 from the lower end of the liquid storage. It is desirable. The appropriate storage amount is the same as the value described in the previous embodiment, and in this embodiment, when the same liquid amount is stored in the drip tube, the liquid level is higher.

[0013]

According to the drip tube of the present invention, it is not necessary to store extra liquid in the drip tube, so that the operator's labor and time required for pumping can be saved. In addition, since the storage amount in the drip tube is small, air flows into the lower conduit, and conversely, since the storage amount is too large, it is possible to perform the injection operation without making it difficult to see the liquid dripping.

[Brief description of the drawings]

FIG. 1 is a schematic view showing one embodiment of a drip tube according to the present invention.

FIG. 2 is a schematic view showing another embodiment of the present invention.

[Explanation of symbols]

 1. Infusion tube 2. Inlet 3. Outlet 4. Cylindrical body 5. Annular line 5a. Upper annular line 5b. Lower annular line 6. Lower conduit 7. 7. Infusion port Reduced diameter portion 8a. Upper end of reduced diameter portion L. Storage area

Claims (5)

[Claims] 1. A transparent cylinder having an inlet for discharging a liquid and an outlet for a liquid, and a display means for indicating an appropriate storage amount in the drip tube at a predetermined position of the cylinder. Drip tube. 2. The drip tube according to claim 1, wherein said display means is formed along a peripheral surface perpendicular to a direction in which the liquid in the drip tube is dropped. 3. The drip tube according to claim 2, wherein the position of the peripheral surface on which the display means is formed is 1/2 to 1/4 of the liquid storable area in the drip tube. 4. The infusion tube according to claim 1, wherein the appropriate storage amount is 0.7 to 10 ml. 5. The drip tube according to claim 1, wherein the display means is an upper end of a reduced diameter portion formed at a lower portion of an inner wall of the drip tube.