JPH0225392Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention involves injecting a medicinal solution into one of the bottles through a transfer needle inserted into the rubber stopper of two medicinal liquid bottles, and then discharging the medicinal liquid from inside the bottle. This invention relates to a liquid medicine inhalation needle for taking out medicine into a syringe.

[Background of the idea]

Pharmaceutical solutions for injections are sometimes prepared by adding sterile distilled water to a freeze-dried drug to dissolve it, or by mixing two types of drug solutions. In this case, one drug solution or distilled water is transferred into the other bottle, but usually a transfer needle is inserted into the rubber stopper of the bottle containing each drug solution, and both bottles are joined vertically. to cause the liquid in the upper bottle to flow into the lower bottle. The transfer needle used to transfer this drug solution is thick and has two parallel channels, one for flowing the drug solution from the top to the bottom and the other for moving the air inside the bottle from the bottom to the top. , a large puncture hole will remain in the rubber stopper of the bottle after the transfer needle is removed. Therefore, in order to take out the medicinal solution mixed in the lower bottle into the syringe as described above, when a thin injection needle is inserted into the hole in the rubber stopper, the bottle is turned upside down and the syringe is sucked. , the drug solution will leak out from the large penetration hole of the above-mentioned transfer needle.
Such leakage of medical solutions is not only undesirable, but also poses a serious problem in medical practice because there is a risk that impurities floating in the air may enter the medical solution.

[Purpose of invention]

This invention is intended to solve the above-mentioned problems, and aims to provide a drug solution inhalation needle that can eliminate drug solution leakage, suppress the intrusion of airborne impurities, and is easy to operate.

[Structure of the idea]

In order to achieve the above purpose, this invention includes an adapter having an inner hole that can fit the tip of a syringe on one end of a cylindrical body, and a puncture needle with two flow channels on the other end. a first flow path of the penetration needle is communicated with the cylindrical body, a curved plate-shaped water permeable filter is loaded in the internal space between the communication hole and the adapter, and a second flow path is communicated with the outside air. A water-blocking filter is provided near the suction hole, so that the medicinal solution can be sucked into the syringe without leaking while supplying clean air.

〔Example〕

This invention will be explained below with reference to embodiments shown in the accompanying drawings.

In the figure, 1 is an adapter provided on one end side of the cylindrical body 2, and 3 is a puncture needle provided on the other end side of the cylindrical body 2.

The adapter 1 has a tapered inner hole 4 that fits into the barrel tip 102 of the syringe 101 in a fluid-tight manner.

The cylindrical body 2 has a space 5 communicating with the inner hole 4 of the adapter 1, and a filter 6 for removing foreign matter etc. can be loaded into the space 5. This filter 6 has a curved plate shape,
This is to increase the filtration area.

The puncture needle 3 has an outer diameter that is approximately the same as that of a transfusion needle (not shown) used in normal use, and is provided with two parallel channels 8 and 9. ing. The first channel 8 serves as a drug solution channel, and communicates the tip of the puncture needle 3 with the space 5 of the cylindrical body 2. Further, the second flow path 9 serves as an air flow path, and communicates the tip of the puncture needle 3 with the suction hole 10 provided near its base.

Reference numeral 11 denotes a water-blocking filter that covers the outer end of the intake hole 10, and the water-blocking filter 11 has an average passing hole diameter of about 0.2 μm and prevents bacteria in the air from entering the second flow path 9.
This prevents the chemical liquid from entering the inside of the tank and also prevents the chemical liquid from leaking out from the intake hole 10 through the second flow path 9.

Next, the function of the drug solution inhalation needle shown in the above embodiment will be described based on FIG. First, the barrel tip 102 of the syringe 101 is fitted into the inner hole 4 of the adapter 1, and the puncture needle 3 is inserted into the puncture hole of the transfer needle left in the rubber stopper 104 of the medicine bottle 103. In this case, the puncture needle 3
Since the outer diameter of the drug liquid bottle 10 is approximately the same diameter as that of the injection needle, the puncture hole will be in close contact with the puncture needle.
Even if 3 is turned upside down as shown, no liquid leakage occurs.
Next, when you pull the piston 101' of the syringe 101,
The medicinal liquid in the medicinal liquid bottle 103 is sucked into the first channel 8 and enters the cylindrical body 2, passes through the water-permeable filter 6, passes through the inner hole 4 of the adapter 2, and is housed in the syringe of the syringe 101. At this time, air is replenished into the drug solution bottle 103 through the second channel 9, but the air passes through a water-blocking filter 11 provided to cover the outer end of the intake hole 10 and is purified. be done. Further, this water-blocking filter 11 is connected to the puncture needle 3.
This prevents leakage of the medicinal liquid in the medicinal liquid bottle 103, which may flow back when inserted into the penetration hole of the transfer needle left in the rubber stopper 104 of the medicinal liquid bottle 103.

Note that in the above embodiment, the water-blocking filter 11 is provided so as to cover the outer end of the intake hole 10;
It goes without saying that it may be provided in the middle of the second flow path 9.

[Effect of idea]

As explained above, this invention provides an adapter having an inner hole that can be fitted with the tip of a syringe on one end of a cylindrical body, and a puncture needle with two flow paths on the other end. A first flow path of the penetration needle is communicated with the cylindrical body, a curved plate-shaped water permeable filter is loaded in the internal space between the communication hole and the adapter, and a second flow path is communicated with the outside air; Since it is characterized by a water-blocking filter installed near the intake hole, it is connected to a syringe via an adapter, and the puncture needle is inserted into the puncture hole of the transfer needle left in the rubber stopper of the medicine bottle. Since the perforation holes are in close contact with each other, liquid will not leak even if the drug bottle is turned upside down, and clean air can be supplied through the water-blocking filter while being sucked in, so there is no risk of contamination of the drug solution. and suction is performed smoothly. Therefore, the complexity of suctioning the injected drug solution is significantly reduced, which brings about various excellent effects such as simplifying medical practice and improving safety.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the drug solution inhalation needle of this invention, Figure 2
The figure shows the state of use. 1... Adapter, 2... Cylindrical body, 3... Penetration needle, 4... Inner hole, 5... Space, 6... Filter,
8...First flow path, 9...Second flow path, 10...Intake hole, 11...Waterproof filter, 101...Syringe, 102...Tip tip, 103...Medicine liquid bottle, 104
……Rubber stopper.

Claims (1)

[Scope of utility model registration request] An adapter having an inner hole that can be fitted with the tip of a syringe is provided on one end of the cylindrical body, and a puncture needle having two channels is provided on the other end, and the first passage of the puncture needle is A curved plate-shaped water-permeable filter is connected to the cylindrical body and installed in the internal space between the communication hole and the adapter, and the second flow path is connected to the outside air, and a water-blocking filter is installed near the intake hole. A drug solution inhalation needle characterized by being provided with a drug solution inhalation needle.