JPH0928796A - Transport liquid tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To exclude infection in hospital, etc., by permitting liquid to flow to and be stored in a chamber via an upstream side housing, a disinfection filter and a downstream side housing and after that, permitting it to arrive at an injection needle when a communication means communicates with a medical container. SOLUTION: A conduit 26 is closed with forceps 28, and the communication needle part 10 of the upstream side housing 12 is pierced through the rubber cock of a transport liquid container. After a dripping cylinder 22 is depressed and the air in the inside is discharged by contraction the chamber 20, the chamber 20 is restored. In this way, dripping liquid 19 is stored in the chamber 20. A syringe 40 is mounted on a callus tube 36, and the conduit 22 is relaxed with the forceps 28. Therefore, the arrival of the dripping liquid at the tip of the injection needle 40 is confirmed, then, the injection needle is pierced through a blood vessel. In this way, the disinfection of a medicine vial is performed by making it pass the disinfection filter 14 even when it is contaminated by a bacterium. Therefore, the bacterium is prevented from intruding into a patient.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an infusion device used for drip injection and the like, and more specifically, it is set at the outlet of a medical container and is hospitalized with drip solution during drip administration to a patient. Regarding infusion device that eliminates the fear of.

[0002]

2. Description of the Related Art A bag for infusions or the like, which is generally used for infusion injection, or a medical container such as a container is provided with a discharge port or discharge port sealed with a rubber stopper. At the time of instillation to the patient, the communicating needle of the infusion set (or infusion device) is pierced by the rubber stopper body of the discharge port to actually start the infusion.
As shown in FIG. 4, the conventional infusion set 71 has a communication needle 73,
It is composed of a drip tube 75, a conduit 77, a clamp 78, an octopus tube 79, and an injection needle 81. The communication needle 73 is communicatively connected to the drip tube 75 via the flange portion 83, and the outflow port 85 of the communication needle 73 is arranged in the chamber 87 of the drip tube 75. The conduit 77 is communicatively connected to the drip tube 75, and also has an octopus tube 79.
Connected to A hump 89 is formed in the octopus tube 79, and a small amount of air in the drip solution is stored in the hump 89 to prevent air from the injection needle 81 from entering the body.
The clamp 78 can adjust the flow rate and shut off the conduit 77. Then, the infusion set 71 is sterilized by gas such as ethylene oxide or γ-ray sterilization, and is maintained aseptically until use.

In such a conventional infusion set 71, the conduit 77 is closed by the clamp 78 of the infusion set 71 with the outlet of the medical container facing upward, and the communication needle 73 is pierced. After the infusion set 71 is connected, the medical container is suspended and half or more of the drip solution is stored in the drip tube 75. Next, after removing the protector or the like of the injection needle 81, the clamp 78 is loosened, and it is confirmed that the drip solution reaches the tip of the injection needle 81. The conduit 77 is closed again at the clamp 78, and the injection needle 81 is inserted into the blood vessel. Then, the clamp 78 is loosened and the drip is performed while adjusting the flow rate.

[0004]

However, the conventional infusion system using the infusion set 71 has the following problems. In a medical container to which a drug vial is connected, the drug in the vial is aseptically filled with a lyophilized product, and complete sterilization is not always guaranteed. For this reason, if an infusion is performed by simply connecting the communication needle of the infusion set to the conventional outlet, an infection may occur. Also, in the case of mixed injection of mixed injections, there is a great risk of contaminating the mixed injection drug while setting it in the syringe.In such a state, the injection needle is pierced into the rubber stopper of the injection port or discharge port of the medical container. When mixed injection is performed, the inside of the container body is contaminated,
If drip is continued as it is, it may cause nosocomial infection.

Therefore, an object of the present invention is to provide an infusion device which is free from the risk of infectious diseases at medical sites, particularly nosocomial infections.

[0006]

DISCLOSURE OF THE INVENTION The present invention is directed to a communication means communicating with an infusion container, a transparent drip tube having a chamber connected to the communication means for confirming the drop of the drip solution, and the drip tube. In an infusion device consisting of an injection needle communicatively connected to, a sterilizing filter is arranged between the communicating means and the drip tube, and both sides of the sterilizing filter are connected to the upstream side communicating with the communicating means. A housing or an upstream housing integrally formed with the communication means and a downstream housing communicated with the drip tube are provided, and a liquid outlet of the downstream housing is in the chamber. The above object is achieved by providing an infusion device.

The infusion device according to the present invention is characterized in that the downstream housing and the drip tube are integrally formed. In the infusion device according to the present invention, the sterilization filter has a pore size of 0.60 μm or less. In the infusion device according to the present invention, the drip cylinder is characterized in that the wall portion thereof is made of a resin molded product that is transparent and flexible and that can contract and restore the chamber.

[0008]

In the above infusion device, when the communication means communicates with the medical container via the outlet, the drip solution in the container flows into the upstream housing through the communication means. The infusion solution that has flowed in passes through the sterilization filter, flows into the downstream housing, passes through the outlet of the downstream housing, and drops in the chamber of the infusion tube. Then, the drip solution is once stored in the chamber and then reaches the injection needle through the conduit. As a result, the drip solution can be administered to the patient.

In this case, even if the drug vial is contaminated with bacteria, the drip solution from the medical container is sterilized by a sterilization filter, and has a diameter of 0.60 μm, for example.
If the filter is m, particularly 0.45 μm or less, the sterilization is sufficiently performed, and the bacterium does not enter the patient. Also,
Even if the inside of the medical container is contaminated by the mixed injection liquid, the sterilization filter performs almost complete sterilization, and in this case also, contamination at the time of infusion is prevented. Therefore, even in a drug kit, a mixed injection system, etc., it effectively acts to prevent infectious diseases. Further, since the outlet of the downstream housing of the sterilization filter is inside the chamber of the drip filter, the velocity of the drip solution that permeates from the sterilization filter can be accurately determined by observing the inside of the drip cylinder. For this reason, it becomes easy to adjust the liquid amount by the cleansing, it is possible to prevent the flow of the sterilization filter from being the rate-determining step as much as possible, and safe infusion becomes possible. Therefore, by adding the structure combining the infusion device of the present invention to the discharge port or the like, it becomes possible to prevent in-hospital contamination, which has been regarded as a problem in the past.

[0010]

The preferred embodiments of the infusion device according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a partial cross-sectional view of a first embodiment of an infusion device according to the present invention, and FIG. 2 is a main-part cross-sectional view of the infusion device in the first embodiment.

As shown in FIGS. 1 and 2, an infusion device 1 of this embodiment has an upstream housing 12 having a communicating needle portion 10 communicating with an infusion container, and an upstream housing 12 with a downstream housing 16 interposed therebetween. Transparent drip tube 22 having a chamber 20 for confirming the drop of the drip solution, and an injection needle 40 communicatively connected to the drip tube 22 via a conduit 26.
Consists of In the infusion solution 1, the sterilization filter 14 is arranged between the communication needle 10 and the drip tube 22, and the upstream housing 12 integrally formed with the communication needle 10 is provided on both sides of the sterilization filter 14. , A downstream housing 16 that is connected to the drip tube 22 for communication, and the downstream housing 16 is provided.
The liquid outlet 18 is located in the chamber 20.

The infusion device 1 according to this embodiment will be described in more detail. The upstream housing 12 and the downstream housing 16 that support the sterilization filter 14 and have the communicating portion 10 as a communicating means at the tip thereof are made of propylene resin. It consists of a molded product.
The housings 12 and 16 do not have to be resin molded products, but resin molded products are preferable for incineration in the single-infusion infusion device 1. Further, the resin molded product is not limited to propylene resin, and any other general-purpose resin molded product may be used as long as it is a molded product capable of forming the communicating needle portion 10 capable of being pierced in the rubber stopper body of the discharge port such as an infusion container. . However, since the drip solution comes into contact with the molded product, an olefin resin molded product having a small amount of eluate such as polypropylene is desirable.

The sterilization filter 14 is liquid-tightly supported at its periphery by the housings 12 and 16, and although not shown in FIG. 1, support nets are provided on both sides of the sterilization filter 14. The sterilization filter 14 is a membrane filter, but a general screen type, depth type, anisotropic type general filter or the like can also be used.
The pore diameter of the membrane of the filter 9 is 0.6 μm or less, preferably 0.45 μm or less, more preferably 0.22 μm or less. If the pore size is within the above range, the passage of bacteria is almost completely prevented, and if 0.45 μm or less, toxic components such as bacterial debris can be removed, and if 0.22 μm or less, most toxic components such as debris are removed. You can.

The sterilization filter 14 is hydrophilic, and in this embodiment, polyvinylidene fluoride that has been hydrophilized is used to prevent the solute from adhering to the drip solution.
The sterilization filter 14 is not limited to that of this embodiment,
For example, cellulose acetate, cellulose ester, cellulose nitrate, regenerated cellulose, and other cellulose-based membranes, nylon-based polyamide-based membranes, Teflon-based membranes made of fluorinated ethylene resin in powder or dispersion medium, polystyrene Examples thereof include a vinyl film made of phthalic acid and the like, a polyolefin film obtained by melt extrusion of crystalline polypropylene and the like and rapid stretching, an acrylic film, a polycarbonate film, a vinylidene chloride film and the like.

A large-diameter opening base end 23 of the drip tube 22 is liquid-tightly fixed to the outer peripheral surface of the downstream housing 18, and the outlet 18 of the downstream housing 16 is the chamber 2 of the drip tube 22.
It is placed within 0. Further, the drip tube 22 is made of an injection molded product obtained by blending polypropylene with polypropylene elastomer, and the side wall 23 has flexibility and transparency. Therefore, it is possible to confirm the drop of the drip solution 19 from the outflow port 18 during the drip by the transparent drip tube 22.
Moreover, the chamber 20 can be contracted and restored by the flexible drip tube 22, and a constant drip solution 19 can be stored in the chamber 20. The drip tube 22 does not have to be a resin molded product, but a resin molded product is preferable for incineration in the single-use infusion solution 1. Further, the resin molded product is not limited to propylene resin and the like, and the drip solution 19
Other general-purpose resin molded products may be used as long as they are transparent and have a flexibility capable of shrinking and restoring the chamber 20 to some extent. However, since the drip solution comes into contact with the olefin resin and the elastomer molded product, it is desirable that the amount of eluate such as polypropylene is small.

One end 24 of a conduit 26 is communicatively connected to the proximal end of the small diameter opening of the drip tube 22, and the other end thereof is a proximal end 34 of a tacho tube 36.
Connected to The conduit 26 is made of a flexible tube, and a clamp 28 is provided in the middle thereof. The clamp 28 is a roller clamp including a base 30 and a roller 32, and the roller 32 moves in the direction of the arrow in FIG. 1, whereby the inner diameter of the conduit 26 is narrowed and the flow rate of the drip solution 19 is adjusted. A storage hump 38 is formed in the octopus tube 36, and the outflow air in the drip is stored in the storage hump 38. Octopus tube 3
A needle attachment portion 39 is formed in a tapered shape at the tip of 6, and an injection needle 40 is attached to the attachment portion 39 during use. The infusion solution 1 is packaged and gas sterilized with ethylene oxide. Sterilization is not limited to gas sterilization, and may be irradiation sterilization with γ-rays, high-pressure steam sterilization, or the like.

When the infusion device 1 having such a structure is used, the conduit 26 is closed by the clamp 28, and the communicating needle portion 10 of the upstream housing 12 is pierced into the rubber stopper of the outlet of the infusion container (not shown). To be done. Infusion container is hung and drip tube 2
2 is crushed by a finger, the chamber 20 is contracted, and the internal air is pushed out. The drip barrel 22 is restored by releasing the finger, and the drip liquid 19 is stored in the chamber 20 in a predetermined amount. An injection needle 40 is attached to the tip 39 of the tacho tube 36, and the conduit 22 is loosened at the clamp 28. And the drip solution 1
9 is confirmed to reach the tip of the needle 40, and the needle 40
Is punctured into the patient's blood vessel. The clamp 28 is gradually loosened, and the drip liquid 19 at the outlet 18 of the downstream housing 16 is observed. The clamp 28 is adjusted while observing, and the adjustment of the clamp 28 is completed by taking care so that the sterilization filter 14 does not reach the rate-determining step of the drip rate.

In this case, even if the drug vial is contaminated with bacteria, the drip solution from the medical container is sterilized by the sterilization filter 14, and has a diameter of, for example, 0.6.
If the filter is 0 μm, particularly 0.45 μm or less, the bacteria are sufficiently removed and bacteria are not introduced into the patient. In addition, even if the inside of the medical container is contaminated by the mixed injection liquid,
The sterilization filter 14 performs almost complete sterilization, and in this case also, contamination during infusion is prevented. Therefore, even in a drug kit, a mixed injection system, etc., it effectively acts to prevent infectious diseases. Furthermore, the downstream housing 1 of the sterilization filter 14
Since the outflow port 18 of 6 is in the chamber 20 of the drip tube 22, the velocity of the drip solution 19 permeating from the sterilization filter 14 can be accurately determined by observing the inside of the drip tube 22. Therefore, the flow rate can be easily adjusted by the clamp 28, the permeation rate of the sterilization filter 14 can be prevented as much as possible from the rate-determining step, and safe infusion can be performed. Therefore, by adding the structure combining the infusion device of the present invention to the discharge port or the like, it becomes possible to prevent in-hospital contamination, which has been regarded as a problem in the past.

In the above embodiment, the communicating needle portion 10 which is the communicating means is formed integrally with the upstream housing 12.
The communication needle portion 10 and the housing 12 may be formed separately, and the communication means and the housing 12 may be separated. Further, in the above embodiment, the communication needle is used as the communication means, but when the discharge port of the infusion container or the like is the communication needle, the communication means may be a rubber stopper. In the above embodiment, the large-diameter open end 23 of the drip tube 22 is formed to have substantially the same size as the diameter of the downstream housing 16, but the open end is made smaller than the diameter and the drip tube is liquid-tight to the downstream housing. You may stick to. Further, as shown in FIG. 3, the downstream housing 16 and the drip tube 2
2 may be an integrally molded product 42, the sterilization filter 14 may be supported by a support net 44, etc., and the drip outflow destination part 46 of the drip solution 19 falling along the net 44 may be used as the outlet 18 provided in the chamber 20. . Therefore, the outflow port does not need to have a normal mouth shape, and may be any outflow portion where the drip solution 19 falls.

[0020]

As described above, the infusion device of the present invention is
A sterilization filter is arranged between the communication means and the drip tube, on both sides of the sterilization filter, an upstream housing communicating with the communication means or an upstream housing integrally formed with the communication means, Since the downstream housing that is connected to the drip tube is provided and the liquid outflow portion of the downstream housing is in the chamber, there is no risk of infectious diseases at the medical site, particularly hospital-acquired infections.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of an infusion device according to a first embodiment.

FIG. 2 is an enlarged cross-sectional view of a main part of the infusion device according to the first embodiment.

FIG. 3 is an enlarged sectional view of an essential part showing a modified example of the first embodiment.

FIG. 4 is a partial cross-sectional view of a conventional infusion device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Infusion device 10 Communication needle part 12 Upstream housing 14 Sterilization filter 16 Downstream housing 18 Outflow port 19 Drip solution 20 Chamber 22 Drip tube 23 Large diameter open end 24 Conduit tip 26 Conduit 28 Clemme 36 Tacho tube 40 Injection needle 42 Support Net 44 Outflow Destination

Claims (4)

[Claims] 1. A communication means communicating with an infusion container, a transparent drip tube having a chamber connected to the communication means for confirming the drop of the drip solution, and an injection needle connected to the drip tube. In the infusion device consisting of, a sterilization filter is arranged between the communication means and the drip tube, and an upstream housing communicating with the communication means or the communication means is integrally formed on both sides of the sterilization filter. And a downstream housing connected to the drip tube so as to communicate with each other. The liquid outflow portion of the downstream housing is in the chamber. 2. The infusion device according to claim 1, wherein the downstream housing and the drip tube are integrally formed. 3. The sterilization filter has a pore size of 0.60.
The infusion device according to claim 1 or 2, wherein the infusion device has a thickness of not more than μm. 4. The drip tube according to claim 1, wherein a wall of the drip tube is transparent and flexible, and the drip tube is made of a resin molding capable of contracting and restoring the chamber. Infusion device.