CN210812595U - Powder extraction element that intravenous medicine allocated was used - Google Patents

Abstract

The utility model discloses a powder extraction device for intravenous drug preparation, which comprises a penicillin bottle, a needle tube, a connector and an injector, one side of the connector, which is far away from one end of the needle tube connector, is fixedly connected with an injection extraction tube through welding, the pressure balance tube is fixedly arranged at one side of the connector, which is far away from the needle tube connector, and is far away from the injection extraction tube by welding, the injection extraction tube, the pressure balance tube and the connector are arranged, when the powder injection produced by the freeze-drying process is extracted, the pressure inside the bottle is consistent with the pressure outside the bottle through the pressure relief of the pressure balancing pipe, the problem of drug pollution caused by the pressure relief of the separation of the injector and the needle head is avoided, the ceftazidime for injection and the like contain cosolvent sodium bicarbonate, the gas generated when the product is dissolved is discharged through the pressure balance pipe, so that the internal pressure and the external pressure of the bottle are the same, and the bottle is convenient to extract.

Description

A powder extraction device for intravenous drug dispensing

technical field

The utility model relates to the technical field of medical devices, in particular to a powder extraction device for dispensing and taking intravenous drugs.

Background technique

With the development of modern medical technology, the treatment mode of intravenous infusion of liquid drugs has changed from open semi-open to fully closed infusion mode. Intravenous drugs are generally combined with two or more drugs to enhance the efficacy. Intravenous drug preparation is required. In order to ensure that the drug is not contaminated and the clinical efficacy of the drug is generally prepared by full-time technicians in a 10,000-level clean and airtight environment, and a local 100-level clean operating table, the intravenous When the drug is prepared, the injection is made of water for injection as the preparation solvent, and a small part is made of non-aqueous solvent. Glucose solution is diluted for injection, and the injection can be diluted according to the dosage and can be directly injected, and used after it is completely dissolved.

However, there are some disadvantages in the use of the traditional powder extraction device for intravenous drug dispensing, such as:

1. In traditional intravenous drug preparation powder extraction, water for injection is generally drawn through a syringe into the vial where the powder injection is stored. After the powder drug in the vial is completely dissolved, the syringe is used to extract the powder for injection. The powder injection produced by the freeze-drying process There is often negative pressure in the vial. When dissolving medicines clinically, the phenomenon that the liquid medicine cannot be easily sucked out after dissolution occurs due to the negative pressure. The existing solution is often to separate the syringe needle from the syringe nipple to relieve the pressure. The process of reinstallation increases the risk of drug contamination.

2. When extracting powders for traditional intravenous drug preparation and dispensing, some powders for injection will generate gas after being dissolved during the extraction process. For example, ceftazidime for injection contains sodium bicarbonate as a co-solvent. When dissolving such products, sodium bicarbonate meets the When the solvent produces carbon dioxide gas, the pressure inside the bottle is higher than the pressure outside the bottle, making it difficult to extract the liquid.

Utility model content

The purpose of the present utility model is to provide a powder extraction device for the preparation and extraction of intravenous drugs, so as to solve the problems raised in the above-mentioned background technology.

In order to achieve the above purpose, the present utility model provides the following technical scheme: a powder extraction device for intravenous drug preparation and extraction, comprising a vial, a needle tube, a connector and a syringe, wherein the vial is movably connected with a needle tube by plugging, so the One end of the needle tube away from the vial is fixedly connected with a needle tube connector by welding, one end of the needle tube connector away from the needle tube is fixedly connected with a connector by welding, and one end of the connector away from the needle tube connector is fixedly connected with an injection extraction by welding. Tube, one end of the injection extraction tube away from the connector is fixedly connected with a syringe connector by welding, and a syringe is movably connected in the syringe connector by plugging, and the end of the connector away from the needle tube connector is away from the injection extraction tube. A pressure balance pipe is fixedly installed by welding, and an air filter is movably installed at one end of the pressure balance pipe away from the connector through plug connection.

Further, a sealing cap is installed at one end of the air filter away from the pressure equalization tube by snap connection, so as to prevent the solvent from leaking out of the pressure equalization tube when the syringe injects the solvent into the vial.

Further, the inside of the connector communicates with the injection extraction tube, the pressure balance tube and the needle tube, so as to balance the pressure in the vial.

Further, the inner contour of the syringe connector matches the outer contour of the injection end of the syringe, so that the syringe and the injection extraction tube are connected together through the syringe connector.

Further, the injection extraction pipe and the pressure balance pipe are both made of PVC.

Further, the air filter is plugged with an air filter membrane for filtering fine dust in the air.

Compared with the prior art, the beneficial effects of the present utility model are:

1. The present utility model realizes that the pressure inside the bottle is consistent with the pressure outside the bottle through the pressure relief of the pressure balance tube when extracting the powder injection produced by the freeze-drying process through the provided injection extraction tube, pressure balance tube and connector, so as to avoid It solves the problem of drug contamination caused by the separation of the syringe and the needle for pressure relief.

2. The present utility model realizes that the gas generated when dissolving this type of product is discharged through the pressure balance tube when the ceftazidime for injection and the like contain the cosolvent sodium bicarbonate through the provided injection extraction tube, the pressure balance tube and the connector, so that the The same pressure inside and outside the bottle facilitates extraction.

Description of drawings

1 is a schematic cross-sectional view of the overall front view structure of the present utility model;

Figure 2 is a schematic cross-sectional view of the overall left-view structure of the present utility model;

Fig. 3 is the overall top view structure schematic diagram of the utility model;

FIG. 4 is an enlarged schematic view of a partial structure of the present invention.

In Figure 1-4: 1-vial; 2-needle; 3-connector; 4-syringe; 5-syringe connector; 6-injection extraction tube; 7-pressure balance tube; 8-air filter; 9- Needle connector.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to Figures 1-4, the present utility model provides a technical solution: a powder extraction device for intravenous drug preparation and extraction, comprising a vial 1, a needle tube 2, a connector 3 and a syringe 4, and the vial 1 is inserted through a A needle tube 2 is movably connected, which is used to pass through the rubber cap of the vial 1, the needle tube 2 is fixedly connected with a needle tube connector 9 at one end away from the vial 1 by welding, and the needle tube connector 9 is connected with a connector by welding at one end away from the needle tube 2. 3. It is used to connect the injection extraction tube 6, the pressure balance tube 7 and the needle tube 2 to realize the pressure balance in the vial 1. One side of the connector 3 away from the needle tube connector 9 is fixedly connected with the injection extraction tube 6 by welding. One end of the tube 6 away from the connector 3 is fixedly connected with a syringe connector 5 by welding, and a syringe 4 is movably connected in the syringe connector 5 by plugging, and is used for injecting the solvent into the vial 1 through the syringe 4 to make the powder injection and the solvent completely. At the same time, it is used to extract the fused powder injection. One end of the connector 3 away from the needle tube connector 9 is away from the injection extraction tube 6 and one side is fixedly installed with a pressure balance tube 7 by welding, and the pressure balance tube 7 is away from the connector 3. An air filter 8 is installed movably for air filtration of fine dust in the air.

One end of the air filter 8 away from the pressure balance tube 7 is installed with a sealing cap through a snap connection to prevent the solvent from leaking out of the pressure balance tube 7 when the syringe 4 injects the solvent into the vial 1. The inside of the connector 3 is connected to the injection extraction tube 6 , the pressure balance tube 7 and the needle tube 2 are connected to each other and are used to balance the pressure in the vial 1. The inner contour of the syringe connector 5 is consistent with the outer contour of the injection end of the syringe 4, which is convenient for injection. 4 and the injection extraction tube 6 pass through The syringe connectors 5 are connected together, the injection extraction tube 6 and the pressure balance tube 7 are made of PVC, and the air filter 8 is plugged with an air filter membrane for filtering fine dust in the air.

Working principle: When extracting the powder injection produced by the freeze-drying process, tear open the aluminum-plastic on the vial 1, insert the needle tube into the vial 1, and open the sealing cap on the air filter 8 to make the vial. The pressure in 1 is kept in balance with the outside world, a certain amount of solvent corresponding to the powder injection is extracted through the syringe 4, the sealing cap on the air filter 8 is installed and fastened, the syringe 4 is connected with the injection extraction tube 6 through the syringe connector 5, and the The solvent in the syringe 4 is pressed into the injection extraction tube 6, and flows into the vial 1 through the connector 3 and the needle tube 2 to be fused with the powder injection. After the fusion is completed, the fused drug is extracted through the syringe 4. The medicament is poured into the drip bottle for use.

Since ceftazidime for injection contains sodium bicarbonate as a cosolvent, the process of injecting the solvent in the early stage is the same as the above steps when dissolving this type of product. After the solvent is injected, open the sealing cap of the air filter 8 for a period of time, so that the The gas is discharged to keep the pressure in the vial 1 in balance with the outside world, which is convenient for extraction, and then the sealing cap of the air filter 8 is closed to extract the fused medicament.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. The utility model provides a powder extraction element that intravenous medicine batched and was used, includes xiLin bottle (1), needle tubing (2), connector (3) and syringe (4), there is needle tubing (2) through grafting swing joint in xiLin bottle (1), xiLin bottle (1) one end is kept away from in needle tubing (2) through butt fusion fixedly connected with needle tubing connector (9), its characterized in that: needle tubing connector (9) are kept away from needle tubing (2) one end and are passed through butt fusion fixedly connected with connector (3), needle tubing connector (9) one end is kept away from in connector (3) wherein one side through butt fusion fixedly connected with injection extraction tube (6), injection extraction tube (6) are kept away from connector (3) one end and are passed through butt fusion fixedly connected with syringe connector (5), there are syringe (4) through grafting swing joint in syringe connector (5), needle tubing connector (9) one end is kept away from in connector (3) one end and is kept away from injection extraction tube (6) one side and have pressure balance pipe (7) through butt fusion fixed mounting, pressure balance pipe (7) are kept away from connector (3) one end and have air cleaner (8) through grafting swing joint.

2. The device of claim 1, wherein the device further comprises: one end of the air filter (8), which is far away from the pressure balance pipe (7), is movably provided with a sealing cap through clamping.

3. The device of claim 1, wherein the device further comprises: the interior of the connector (3) is communicated with the injection extraction tube (6), the pressure balance tube (7) and the needle tube (2).

4. The device of claim 1, wherein the device further comprises: the inner contour of the syringe connector (5) is matched with the outer contour of the injection end part of the syringe (4).

5. The device of claim 1, wherein the device further comprises: the injection extraction pipe (6) and the pressure balance pipe (7) are both made of PVC materials.

6. The device of claim 1, wherein the device further comprises: an air filter membrane is plugged in the air filter (8).

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