CN219022722U

CN219022722U - Syringe needle

Info

Publication number: CN219022722U
Application number: CN202222301678.6U
Authority: CN
Inventors: 刘杨洁; 楼新江; 严孟君; 马杨莹; 赵琼
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2023-05-16
Anticipated expiration: 2032-08-30

Abstract

The utility model discloses an injector needle head, which comprises a main needle (2) arranged at the bottom of an injector (1) and communicated with the main needle, wherein an auxiliary needle (3) with the same injection direction as the main needle (2) is arranged at the side part of the main needle (2), a lower through hole (4) is arranged at the tail end of the auxiliary needle (3), an exhaust hole (5) is arranged at the side surface of the upper part of the auxiliary needle (3), and the exhaust hole (5) is connected with the lower through hole (4) through the inner cavity of the auxiliary needle (3); a filter membrane (6) is arranged on the exhaust hole (5); the utility model can promote the smoothness of the injection and suction processes of the injector when the intravenous medicine is configured, and has good practicability and use reliability.

Description

Syringe needle

Technical Field

The utility model relates to the field of medical appliances, in particular to a syringe needle for intravenous drug allocation.

Background

The syringe is a static medical appliance, when intravenous medicine is configured, gas or liquid is mainly extracted or injected by a needle, the existing syringe needle generally only comprises a single needle body, when the syringe is used for sucking, negative pressure is easily generated on a container at the sucked side, so that the liquid is difficult to extract, and when the syringe is used for injecting, the container at the injected side is difficult to inject due to the fact that the volume of the liquid is increased, the gas space is compressed to generate pressure, and therefore the syringe is difficult to use and has poor convenience.

Disclosure of Invention

The utility model aims to provide a syringe needle. The utility model can promote the smoothness of the injection and suction processes of the injector when the intravenous medicine is configured, and has good practicability and use reliability.

The technical scheme of the utility model is as follows: the needle head of the injector comprises a main needle which is arranged at the bottom of the injector and communicated with the main needle, an auxiliary needle which has the same injection direction as the main needle is arranged at the side part of the main needle, a lower through hole is arranged at the tail end of the auxiliary needle, an exhaust hole is arranged at the side surface of the upper part of the auxiliary needle, and the exhaust hole is connected with the lower through hole through the inner cavity of the auxiliary needle; and a filter membrane is arranged on the exhaust hole.

In the above-mentioned syringe needle, the upper portion of vice needle is equipped with the exhaust down pipe that sets up, the exhaust hole sets up in exhaust down pipe outer end, and exhaust down pipe inner chamber is linked together with lower opening through vice needle inner chamber, and has the stock solution inner chamber between end and the vice needle inner chamber top in the exhaust down pipe.

In the syringe needle, the clamping block is in a right triangle shape, and the diameter of the inner cavity of the exhaust inverted tube is smaller than that of the inner cavity of the auxiliary needle.

In one of the aforementioned syringe needles, the filter is a semipermeable membrane for blocking bacteria and particulates.

In the syringe needle, the side surfaces of the tail ends of the main needle and the auxiliary needle are respectively provided with a side hole communicated with the inner cavity of the main needle and the auxiliary needle.

In the aforementioned syringe needle, the openings of the two side holes face opposite directions.

In the aforementioned syringe needle, the lower outlet of the main needle and the lower port of the sub-needle are opened in opposite directions.

In the aforementioned syringe needle, the diameter of the inner cavity of the main needle is larger than the diameter of the inner cavity of the auxiliary needle.

In one of the above syringe needles, the main needle and the sub-needle are connected to the syringe via the needle.

Compared with the prior art, the utility model has the following beneficial effects:

1. the utility model comprises a main needle which is arranged at the bottom of an injector and communicated with the main needle, wherein the side part of the main needle is provided with an auxiliary needle with the same injection direction as the main needle, the tail end of the auxiliary needle is provided with a lower through hole, the side surface of the upper part of the auxiliary needle is provided with an exhaust hole, and the exhaust hole is connected with the lower through hole through the inner cavity of the auxiliary needle; when sucking liquid, the tail ends of the main needle and the auxiliary needle are inserted into a sucked liquid bottle or a liquid bag, the main needle is used for sucking, the gas space is increased along with the increase of the amount of the sucked liquid, so that negative pressure is generated, at the moment, the external gas is sucked through the exhaust hole of the auxiliary needle and enters the sucked side container from the lower through hole, so that normal air pressure can be maintained in the container, and the liquid is ensured to be smoothly sucked; when liquid is injected, the main needle is used for injecting, the gas space is reduced along with the increase of the quantity of the injected liquid, so that the pressure is increased, and at the moment, the internal gas is discharged to the outside from the exhaust hole through the lower through hole of the auxiliary needle, so that the normal air pressure can be maintained in the air, the liquid is ensured to be injected smoothly, and the air injection device is good in practicability and use reliability.

2. The filter membrane is arranged on the exhaust hole, so that bacteria and particles in the gas can be adsorbed and filtered, the circulated air in the injection and suction processes is sufficiently pure, the pollution caused by the air entering the liquid is prevented, and the use reliability is further improved.

3. The upper part of the auxiliary needle is provided with a downward exhaust inverted pipe, the exhaust hole is arranged at the outer end of the exhaust inverted pipe, the inner cavity of the exhaust inverted pipe is communicated with the lower through hole through the inner cavity of the auxiliary needle, and a liquid storage inner cavity is arranged between the inner end part of the exhaust inverted pipe and the top end of the inner cavity of the auxiliary needle; when the injector is inverted, liquid can flow into the inner cavity of the auxiliary needle through the lower through hole, and the liquid storage inner cavity and the downward exhaust inverted pipe can store the liquid when the injector is inverted, so that liquid leakage is prevented, and the use reliability is good.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the structure of the liquid storage cavity of the utility model.

The marks in the drawings are: 1-a syringe; 2-a main needle; 3-auxiliary needle; 4-a lower through port; 5-exhaust holes; 6-filtering membrane; 7-exhausting a reverse pipe; 8-a liquid storage cavity; 9-side holes; 10-needle.

Detailed Description

The utility model is further illustrated by the following figures and examples, which are not intended to be limiting.

Examples: an injector needle is shown in figure 1, and comprises a main needle 2 which is arranged at the bottom of an injector 1 and communicated with the main needle, an auxiliary needle 3 which has the same injection direction as the main needle 2 is arranged at the side part of the main needle 2, a lower through hole 4 is arranged at the tail end of the auxiliary needle 3, an exhaust hole 5 is arranged at the side surface of the upper part of the auxiliary needle 3, and the exhaust hole 5 is connected with the lower through hole 4 through the inner cavity of the auxiliary needle 3; a filter membrane 6 is arranged on the exhaust hole 5; as shown in fig. 2, the upper part of the auxiliary needle 3 is provided with a downward exhaust pouring pipe 7, the exhaust hole 5 is arranged at the outer end of the exhaust pouring pipe 7, the inner cavity of the exhaust pouring pipe 7 is communicated with the lower through hole 4 through the inner cavity of the auxiliary needle 3, a liquid storage inner cavity 8 is arranged between the inner end part of the exhaust pouring pipe 7 and the top end of the inner cavity of the auxiliary needle 3, and the diameter of the inner cavity of the exhaust pouring pipe 7 is smaller than that of the inner cavity of the auxiliary needle 3, so that liquid is prevented from being quickly poured in; the filter membrane 6 is a semipermeable membrane for blocking bacteria and particles, can make air permeate but liquid medicine does not permeate, has a filtering effect and further prevents liquid leakage, and is a technical means well known and mastered by those skilled in the art, and is not described herein; the side surfaces of the tail ends of the main needle 2 and the auxiliary needle 3 are respectively provided with a side hole 9 communicated with the inner cavity of the main needle, the openings of the two side holes 9 face opposite directions, and bottle plug falling objects after the bottle plug is pierced can fall out of the side holes, so that the bottle plug falling objects are prevented from entering the medicine bottle, and the use reliability is improved; the openings of the lower outlet of the main needle 2 and the lower through opening 4 of the auxiliary needle are opposite in direction, so that the interference of liquid and gas flow between the two is prevented; the diameter of the inner cavity of the main needle 2 is larger than that of the inner cavity of the auxiliary needle 3; the main needle 2 and the auxiliary needle 3 are connected with the injector 1 through the needle head 1, so that the convenience of installation is improved.

Working principle: when sucking liquid, the tail ends of the main needle and the auxiliary needle are inserted into a sucked liquid bottle or a liquid bag, the main needle is used for sucking, the gas space is increased along with the increase of the amount of the sucked liquid, so that negative pressure is generated, at the moment, the external gas is sucked through the exhaust hole of the auxiliary needle and enters the sucked side container from the lower through hole, so that normal air pressure can be maintained in the container, and the liquid is ensured to be smoothly sucked; when the liquid is injected, the main needle is used for injecting, the gas space is reduced along with the increase of the quantity of the injected liquid, so that the pressure is increased, and at the moment, the internal gas is discharged to the outside from the exhaust hole through the lower through hole of the auxiliary needle, so that the normal air pressure can be maintained in the air, the liquid is ensured to be injected smoothly, and the practicability and the use reliability are good; the filter membrane can adsorb and filter bacteria and particles in the gas, so that circulating air in the injection and suction processes is sufficiently pure, the air is prevented from entering liquid to cause pollution, and the use reliability is further improved.

Claims

1. A syringe needle, characterized in that: the device comprises a main needle (2) arranged at the bottom of an injector (1) and communicated with the main needle, an auxiliary needle (3) with the same injection direction as the main needle (2) is arranged at the side part of the main needle (2), a lower through hole (4) is arranged at the tail end of the auxiliary needle (3), an exhaust hole (5) is arranged at the side surface of the upper part of the auxiliary needle (3), and the exhaust hole (5) is connected with the lower through hole (4) through the inner cavity of the auxiliary needle (3); and a filter membrane (6) is arranged on the exhaust hole (5).

2. A syringe needle according to claim 1, wherein: the upper portion of vice needle (3) is equipped with exhaust down pipe (7) that set up, exhaust hole (5) set up in exhaust down pipe (7) outer end, exhaust down pipe (7) inner chamber are linked together with lower opening (4) through vice needle (3) inner chamber, and have stock solution inner chamber (8) between tip and vice needle (3) inner chamber top in exhaust down pipe (7).

3. A syringe needle according to claim 2, wherein: the diameter of the inner cavity of the exhaust inverted pipe (7) is smaller than that of the inner cavity of the auxiliary needle (3).

4. A syringe needle according to claim 1, wherein: the filter membrane (6) is a semipermeable membrane for blocking bacteria and particles.

5. A syringe needle according to claim 1, wherein: side holes (9) communicated with the inner cavities of the main needle (2) and the auxiliary needle (3) are arranged on the side surfaces of the tail ends of the main needle and the auxiliary needle.

6. A syringe needle according to claim 5, wherein: the openings of the two side holes (9) are opposite.

7. A syringe needle according to claim 1, wherein: the lower outlet of the main needle (2) and the lower through opening (4) of the auxiliary needle (3) are opposite in opening direction.

8. A syringe needle according to claim 1, wherein: the diameter of the inner cavity of the main needle (2) is larger than that of the inner cavity of the auxiliary needle (3).

9. A syringe needle according to claim 1, wherein: the main needle (2) and the auxiliary needle (3) are connected with the injector (1) through the needle head (10).