CN208372148U - A kind of leak-proof configuration syringe needle - Google Patents

Abstract

The utility model relates to the technical field of medical equipment, and more particularly, to a leak-proof configuration needle; the extraction needle and a ventilation assembly in the leak-proof configuration needle are respectively communicated with a medicine bottle, and the ventilation assembly includes a needle, a ventilation tube, The connecting piece and the stopper, one end of the needle is communicated with the medicine bottle, and the other end is communicated with the ventilation pipe. The ventilation pipe and the connecting piece are both slidably connected with the extraction needle. The ventilation tube is connected, and the ventilation tube can be communicated with the through hole through the syringe to realize the communication between the needle and the atmosphere. The stopper is arranged on the needle and is slidably connected with the extraction needle. The through hole can be blocked by the stopper, and the connecting piece is provided with a connecting hole. . The utility model has the advantages of simple structure and convenient operation, and can avoid the situation that the liquid is ejected or cannot be drawn out due to pressure.

Description

A leak-proof configuration needle

technical field

The utility model relates to the technical field of medical equipment, in particular to a leak-proof configuration needle.

Background technique

SPECT imaging drugs are generally lyophilized powder, packed in 10ml vials. Before use, it needs to be dissolved and configured with freshly rinsed 99mTc solution. After the configuration is completed, quality inspection is carried out. After passing the inspection, several empty syringes are used to extract an appropriate amount, which is injected into the patient intravenously, and then imaged.

Under normal circumstances, first use an empty syringe to extract 5-7ml of fresh 99mTc solution, puncture the rubber cap above the bottle, and push it into the bottle. After the bolus is complete, pull out the syringe. Existing problems: Due to the negative pressure in the medicine bottle, when the staff pulls out the syringe, sometimes the liquid may be sprayed out when the needle is pulled out, which will easily contaminate the staff's hands and the operating table.

Shake or stand still to fully dissolve the lyophilized powder. Then use an empty syringe, puncture the rubber cap, and extract a small amount of drug for quality testing. After the test is qualified, according to the characteristics of the drug or the number of patients who need to be imaged, the radiopharmaceuticals are extracted with several other empty syringes and prepared for use. Problems: Extracting liquids, usually by turning the vial upside down. When taking the medicine for the first time, it may be difficult to absorb the medicine due to the negative pressure in the medicine bottle. In the back extraction, due to the repeated use of the needle to puncture the rubber cap, it is possible that the liquid leaks through the front needle eye, contaminating the staff's hands and the table.

In addition, intravenous and drip medications, most in dry powder form, come in vials. For example, penicillin used on weekdays needs to be dissolved in physiological saline before use. Each IV infusion requires 2-4 vials of penicillin depending on the unit of penicillin dry powder contained in each vial. When configuring, first use a 10ml syringe to extract an appropriate amount of physiological saline, then use the needle on the syringe to puncture the rubber cap on the bottle, and then use the negative pressure in the bottle to inhale 2-3ml of physiological saline, pull out the syringe and needle, For the next medicine bottle of physiological saline, shake it by hand and let it stand for a certain period of time, so that the penicillin dry powder is fully dissolved. Then use another new syringe to draw and inject the liquid that needs to be instilled. There are problems: Although there is no radioactive contamination, there may also be spraying and not easy extraction and leakage.

What needs to be improved: It does not need to puncture the rubber cap multiple times, and it can avoid the occurrence of liquid spraying or inability to extract due to pressure. Once the rubber cap is punctured, normal saline and 99mTc solution can be injected smoothly, and the prepared medicine can be extracted. to use.

Utility model content

In order to overcome the deficiencies in the prior art, the present invention provides a leak-proof configuration needle, which avoids the occurrence of liquid spraying or failure to be drawn out due to pressure.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the present utility model is:

A leak-proof configuration needle comprises an extraction needle and a ventilation assembly, the ventilation assembly is arranged in the extraction needle, the extraction needle and the ventilation assembly are respectively communicated with a medicine bottle, the ventilation assembly is detachably connected with a syringe, The vent assembly can be controlled to be connected or disconnected from the atmosphere, and the syringe communicates with the vial through the withdrawal needle.

The ventilation assembly includes a needle, a ventilation tube, a connector and a stopper. One end of the needle is communicated with the medicine bottle, and the other end is communicated with the ventilation tube. Both the ventilation tube and the connector are slidably connected with the extraction needle. The needle is provided with a through hole that communicates with the atmosphere, and the syringe is connected with the ventilation tube through a connector, and the ventilation tube can be communicated with the through hole through the syringe to realize the communication between the needle and the atmosphere; the stopper is arranged on the needle and is connected with the extraction needle. For sliding connection, the through hole can be blocked by the block; the connecting piece is provided with a connecting hole, and the syringe is communicated with the extraction needle through the connecting hole, so as to realize the communication between the syringe and the medicine bottle.

The syringe is plugged with the connector.

The extraction needle is provided with a limit protrusion, which can prevent the ventilation component from being taken out from the extraction needle.

The connecting piece is provided with a sealing layer, which can prevent the liquid from flowing out through the gap between the connecting piece and the extraction needle.

The sealing layer is a rubber layer.

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

The syringe extracts the liquid in the vial through the extraction needle and the connector. When the air pressure in the vial increases, the gas will enter the atmosphere from the through hole through the needle and the ventilation tube; The limiting protrusion can prevent the ventilation component from being taken out from the extraction needle, and the connecting piece is provided with a sealing layer, which can prevent the liquid from flowing out through the gap between the connecting piece and the extraction needle. The utility model can avoid the inconvenience of liquid spraying or pumping due to pressure.

Description of drawings

Fig. 1 is the use state diagram of the present utility model;

Fig. 2 is the structural representation of the present utility model;

Fig. 3 is the internal structure schematic diagram of the present utility model;

Figure 4 is a schematic view of the coupling hole of the present invention;

Fig. 5 is the bottom view of the present utility model;

6 is a schematic diagram of the needle structure of the present utility model;

Fig. 7 is the schematic diagram of liquid gas circulation in the internal structure when the utility model is in use;

Among them: 1 is the extraction needle, 2 is the medicine bottle, 3 is the needle, 4 is the vent tube, 5 is the connecting piece, 6 is the stopper, 7 is the through hole, 8 is the connecting hole, 9 is the limit protrusion, and 10 is the sealing layer.

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.

As shown in Figures 1-7: A leak-proof configuration needle includes extraction needle 1, medicine bottle 2, needle 3, ventilation tube 4, connector 5, stopper 6, through hole 7, coupling hole 8, limit Protrusion 9, sealing layer 10.

The extraction needle 1 is provided with a ventilation assembly, the extraction needle 1 and the ventilation assembly are respectively communicated with the medicine bottle 2, the ventilation assembly and the syringe are detachably connected, and the communication or disconnection between the ventilation assembly and the atmosphere can be controlled through the syringe, and the syringe is connected with the medicine through the extraction needle 1. Bottle 2 is connected.

The ventilation assembly includes a needle 3, a ventilation tube 4, a connector 5 and a stopper 6. One end of the needle 3 is communicated with the medicine bottle 2, and the other end is communicated with the ventilation tube 4. Both the ventilation tube 4 and the connector 5 are slidably connected with the extraction needle 1. , the extraction needle 1 is provided with a through hole 7 that communicates with the atmosphere, the syringe is connected with the vent tube 4 through the connector 5, and the vent tube 4 can be communicated with the through hole 7 through the syringe to realize the communication between the needle 3 and the atmosphere, and the stopper 6 It is arranged on the needle 3 and is slidably connected with the extraction needle 1. The through hole 7 can be blocked by the stopper 6. The connecting member 5 is provided with a connecting hole 8. of connectivity.

The extraction needle 1 is provided with a limiting protrusion 9 , through which the ventilation component can be prevented from being removed from the extraction needle 1 .

The connector 5 is provided with a sealing layer 10 to prevent liquid from flowing out through the gap between the connector 5 and the extraction needle 1 , wherein the sealing layer 10 can be a rubber layer.

When in use, firstly, the leak-proof configuration needle punctures the rubber cap of the medicine bottle and makes it enter the empty medicine bottle 2 , and the extraction needle 1 and the needle 3 communicate with the medicine bottle 2 respectively. Then insert the outlet (injection end) of the syringe into the connector 5. When the outlet of the syringe is connected with the connector 5, it will push the connector 5, so that the vent tube 4 moves and communicates with the through hole 7, and pushes the push rod on the syringe , the liquid in the syringe flows from the extraction needle 1 into the vial 2 through the coupling hole 8 on the connector 5 (the liquid will not flow out from the through hole 7), and as the liquid is injected into the vial 2, at this time When the pressure in the vial 2 increases, the air flows from the needle 3 into the vent tube 4 and then flows into the atmosphere through the through hole 7 .

After the liquid is injected into the vial 2 , the outlet of the syringe is separated from the connector 5 . Since the air in the vial 2 has been expelled from the through hole 7 through the needle 3 , it is possible to avoid the situation where the liquid is ejected due to the pressure in the vial 2 .

When the outlet of the syringe is separated from the connector 5, the syringe drives the vent tube 4 and the stopper 6 to move along the inner wall of the extraction needle 1 through the connector 5, so that the stopper 6 blocks the through hole 7, and the vent tube 4 is drawn from the inner wall of the needle 1. seal.

Only the preferred embodiments of the present utility model have been described in detail above, but the present utility model is not limited to the above-mentioned embodiments, and within the scope of knowledge possessed by those of ordinary skill in the art, it is also possible to do so without departing from the purpose of the present utility model. Various changes are made below, and all changes should be included within the protection scope of the present invention.

Claims (6)

1. A leak-proof configuration needle, characterized in that it comprises an extraction needle (1) and a ventilation assembly, the ventilation assembly is arranged in the extraction needle (1), and the extraction needle (1) and the ventilation assembly are respectively connected with the medicine The bottle (2) is communicated, the ventilation assembly is detachably connected with the syringe, the communication or disconnection between the ventilation assembly and the atmosphere can be controlled by the syringe, and the syringe communicates with the medicine bottle (2) through the extraction needle (1). 2. A leak-proof configuration needle according to claim 1, characterized in that: the ventilation assembly comprises a needle (3), a ventilation tube (4), a connecting piece (5) and a stopper (6), so One end of the needle (3) is communicated with the medicine bottle (2), and the other end is communicated with the ventilation pipe (4), and the ventilation pipe (4) and the connecting piece (5) are both slidably connected with the extraction needle (1). The extraction needle (1) is provided with a through hole (7) that communicates with the atmosphere, the syringe is connected with the ventilation pipe (4) through the connecting piece (5), and the ventilation pipe (4) can be communicated with the through hole (7) through the syringe, The communication between the needle (3) and the atmosphere is realized; the stopper (6) is arranged on the needle (3) and is slidably coupled with the extraction needle (1), and the through hole (7) can be blocked by the stopper (6); the The connecting piece (5) is provided with a coupling hole (8), and the syringe communicates with the extraction needle (1) through the coupling hole (8), so as to realize the communication between the syringe and the medicine bottle (2). 3 . The leak-proof configuration needle according to claim 2 , wherein the syringe is plugged with the connector ( 5 ). 4 . 4. A leak-proof configuration needle according to claim 2, characterized in that: the extraction needle (1) is provided with a limit protrusion (9), and the ventilation assembly can be prevented by the limit protrusion (9). Remove from the withdrawal needle. 5. A leak-proof configuration needle according to claim 2, characterized in that: the connecting piece (5) is provided with a sealing layer (10), which can prevent liquid from passing through the connecting piece (5) and the extraction needle ( 1) out of the gap between. 6 . The leak-proof configuration needle according to claim 5 , wherein the sealing layer ( 10 ) is a rubber layer. 7 .