JPS61257654A - Drug injector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is a drug solution transfer device used when injecting a solution into a vial containing a powdered drug or collecting a drug solution from a vial. Regarding.

[Conventional technology]

In recent years, various drugs have been used for treatment and diagnosis, and these drugs are stored in vials in the form of freeze-dried powder. Before use, the solution is injected into a vial to dissolve it, and a certain amount is collected and administered parenterally using an infusion set or the like. Conventionally, to perform such operations, a syringe with a nail has been used, or a device called a double-ended needle with communicating hollow needles attached at both ends has been used.

Insert the needle into the rubber stopper of the vial and inject the solution. Then, shake the vial to dissolve it, insert the needle into the rubber stopper again, collect a certain amount into a syringe, inject this into an infusion bottle containing glucose solution or physiological saline, and use an infusion device. The drug was administered intravenously. When using a double-ended needle, insert one needle into the rubber stopper of the vial containing the drug, and insert the other needle into the rubber stopper of the vial containing the solution. The solution is then transferred to a bottle containing the drug and dissolved. After dissolving the drug, a certain amount was collected using a syringe and administered intravenously in the same manner as above.

[Problem that the invention seeks to solve]

When dissolving and collecting drugs using a syringe, the vial is sealed, so the pressure inside the vial increases or decreases from normal pressure each time a liquid is injected or collected. As a result, liquid often spouted or oozed from the needle insertion portion of the rubber stopper. This phenomenon results in drug loss, which is not only economically undesirable in the case of expensive drugs, but also poses safety issues as some drugs are harmful if inhaled for a long period of time or come into contact with the skin. there were.

Furthermore, when a double-ended needle is used, it is necessary to use a separate syringe to collect the drug solution, which increases the number of types of instruments used, which poses problems in terms of operability and economy.

An object of the present invention is to provide a liquid medicine transfer tool that is free from the risk of spouting or leaching of liquid medicine. Another object of the present invention is to provide an instrument capable of both injecting and collecting a medicinal solution.

[Means for solving problems]

The present invention solves the above-mentioned problems by attaching a needle with a specific structure to a syringe.

That is, the present invention provides a drug liquid transfer device comprising a syringe, a first hollow needle communicating with the syringe, and a second hollow needle provided in parallel to the first hollow needle. The liquid medicine transfer device is characterized in that the second hollow needle is configured such that its base end communicates with the outside when inserted into the opening of the liquid medicine bottle.

[Effect]

When the two hollow needles of the drug solution transfer device of the present invention are inserted into a vial and the syringe is aspirated, the drug solution is inhaled from the first hollow needle communicating with the syringe, and at the same time, the second hollow needle Since air flows into the vial through the tube, the inside of the vial is maintained at normal pressure. In addition, when injecting the medicinal solution inhaled into the syringe into a vial bottle or infusion bottle, when the piston of the syringe is pressed, the medicinal solution is injected into the bottle from the first hollow needle, and the air inside the bottle is forced into the second hollow needle. The pressure inside the bottle is maintained at normal pressure as it is discharged into the atmosphere through the needle.

〔Example〕

FIG. 1 is a partial sectional view of one embodiment of the liquid drug transfer device of the present invention, showing a syringe 1, a first hollow needle 3, a second hollow needle 4, a needle base 5, and a sterilization filter 6. The needle part 2 is configured as follows. The syringe 1 and the first hollow needle 3 are in communication with each other, and when the piston of the syringe is operated, the syringe is inserted or discharged through the hollow needle 8. Furthermore, although the proximal end of the hollow needle 4 is open via the filter 6, it may be directly connected to the outside air without providing a filter.

FIG. 2 is a front view showing a state in which a solution is being injected into a vial bottle 7 containing a drug 8 using the liquid drug transfer device of the present invention. When two hollow needles are inserted into the rubber stopper at the mouth of the vial and then the piston 9 of the syringe is pushed, the dissolved solution drawn into the syringe is injected into the vial through the first hollow needle. . Since the inside of the vial and the outside of the vial are communicated through the second hollow needle, the air inside the vial is released into the atmosphere through the second hollow needle in response to injection of the solution, and the inside of the vial is constantly maintained. kept under pressure.

FIG. 3 is a front view showing a state in which a dissolved drug is being collected into the drug solution transfer device of the present invention. syringe piston 9
When pulled, the medicinal solution is inhaled through the first hollow needle, and at the same time, air flows into the vial through the second hollow needle, thereby maintaining the inside of the vial at normal pressure. If a sterilization filter 6 (see FIG. 1) is provided at this time, it is safer because there is no risk of bacteria entering the vial from the outside. The medicinal solution collected in this manner is again injected into an infusion bottle as shown in FIG. 2 and administered parenterally.

In the above embodiment, the first hollow needle and the second hollow needle are provided in a joined state, but they may be provided in a separated state. Further, the direction of the blade surfaces of the two hollow needles is not particularly limited, but if they are oriented in the same direction as shown in FIG. 1, the needles can be inserted into the rubber plug. ! (This is preferred because it is easy.

〔Effect of the invention〕

By using the drug liquid transfer device of the present invention, the inside of the drug liquid bottle is always maintained at normal pressure, so the liquid inside does not leak from the inserted part of the rubber stopper, and the drug solution can be transferred safely. Can be done.

[Brief explanation of drawings]

FIG. 1 is a partially sectional front view of the liquid drug transfer device of the present invention. Moreover, FIG. 2 is a front view showing a state in which a solution is being injected into a vial using the drug liquid transfer device of the present invention,
FIG. 3 is a front view showing a state in which a medical solution is being collected from the inside of the vial. 1. Syringe 8, first hollow needle 4, second hollow needle 5, needle base 6, sterilization filter

Claims (5)

[Claims] (1) A drug liquid transfer device comprising a syringe, a first hollow needle communicating with the syringe, and a second hollow needle provided in parallel to the first hollow needle, A drug liquid transfer device, characterized in that the second hollow needle is configured such that its base end communicates with the outside when inserted into the mouth of a drug liquid bottle. (2) The liquid drug transfer device according to claim 1, wherein the first hollow needle and the second hollow needle are connected to each other. (3) The liquid drug transfer device according to claim 1, wherein the first hollow needle and the second hollow needle are provided apart from each other. (4) The liquid drug transfer device according to any one of claims 1 to 3, wherein the blade surfaces of the first hollow needle and the second hollow needle face in the same direction. (5) The drug solution transfer device according to any one of claims 1 to 4, wherein the second hollow needle communicates with the outside via a sterilization filter.