CN110812226A - syringe needle - Google Patents

Abstract

The invention discloses a syringe needle, comprising: a needle shaft, the inside of the needle shaft includes a liquid channel running through the length direction of the needle shaft, the top of the needle shaft is provided with a needle tip, and the inside of the needle shaft is further provided There is a first gas channel spaced apart from the liquid channel, and the needle bar is provided with a gas outlet that communicates with the first gas channel; a needle seat, the needle bar is connected to the needle seat, and the needle seat There is a second gas channel on it, the second gas channel is communicated with the first gas channel, and the needle seat is provided with a gas inlet communicated with the second gas channel; an air filter, the air filter The air filter element is provided at the gas inlet and communicated with the gas inlet port; a blocking cover is provided on the air filter element, and the blocking cover can open and close the air filter element. According to the syringe needle of the embodiment of the present invention, the operation hygiene of the syringe needle can be improved, and the application range of the syringe needle can be expanded.

Description

syringe needle

technical field

The invention relates to the technical field of medical instruments, in particular to a syringe needle.

Background technique

Syringes are instruments commonly used to extract medicinal liquids in clinical practice. It is clinically required that the medicinal liquid be in a sterile state, for this reason, the container containing the medicinal liquid is mostly in a closed state when the syringe extracts the medicinal liquid. In the process of extracting the liquid medicine from the airtight container, since no air enters the airtight container to fill the space for extracting the liquid medicine when the liquid medicine is extracted, a negative pressure will be generated. The process of liquid medicine not only delays time, but also easily causes hand fatigue, which is not conducive to subsequent clinical and nursing operations, especially when there is a race against time for rescue.

Some clinical powder medicines are stored in vacuum containers. When the powder medicine needs to be dissolved, the medicine liquid is drawn with a syringe, and the liquid is sucked into the vacuum container through the vacuum negative pressure of the container itself. During this process, it is also necessary to protect the hygiene of the medicinal solution.

However, in the related art, it is difficult for the syringe needle to be suitable for extracting medicinal liquid in various environments of airtight, vacuum and open under the premise of protecting the hygiene of the medicine.

SUMMARY OF THE INVENTION

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention proposes a syringe needle, so as to improve the operation sanitation of the syringe needle and expand the application range of the syringe needle.

A syringe needle according to an embodiment of the present invention includes: a needle shaft, the interior of the needle shaft includes a liquid channel running through the length direction of the needle shaft, the top of the needle shaft is provided with a needle tip, and the inside of the needle shaft is further provided There is a first gas channel spaced apart from the liquid channel, and the needle bar is provided with a gas outlet that communicates with the first gas channel; a needle seat, the needle bar is connected to the needle seat, and the needle seat There is a second gas channel on it, the second gas channel is communicated with the first gas channel, and the needle seat is provided with a gas inlet communicated with the second gas channel; an air filter, the air filter The air filter element is provided at the gas inlet and communicated with the gas inlet port; a blocking cover is provided on the air filter element, and the blocking cover can open and close the air filter element.

According to the syringe needle according to the embodiment of the present invention, the application scope of the syringe needle can be expanded by the arrangement of the air filter and the blocking member. For example, the syringe needle can be suitable for extracting liquid in a sealed condition, thereby improving the working hygiene of the syringe needle and improving the performance of the syringe needle. User's work efficiency. Syringe needles can also be used for mixing powder and liquid medicine under vacuum conditions, so as to protect the hygiene of medicines. Of course, it can also be used in general situations, such as normal pressure containers, open containers, etc.

In some embodiments, the gas inlet is formed on a sidewall of the needle hub and the gas outlet is formed on a sidewall of the needle shaft.

Specifically, the gas inlet and the gas outlet are located on the same side of the needle seat and the needle shaft, respectively.

In some embodiments, the air filter element includes: a raised portion disposed at the gas inlet, a cavity connected to the gas inlet and external air is arranged in the raised portion, and the blocking cover provided on the protruding part to open and close the cavity; filtering material, the filtering material is provided in the cavity.

Specifically, the length of the protruding portion is greater than the length of the gas inlet.

In some embodiments, a concave portion is formed on the side wall of the needle shaft, and the syringe needle further includes a stopper piece, and the stopper piece is arranged around a part of the concave portion to define the first gas aisle.

In some embodiments, the syringe needle further includes a blocking member, the blocking member is provided on the bottom of the needle hub, the blocking member is configured to normally block the liquid channel, and when the blocking member is triggered When the plug is blocked, the liquid channel can be connected.

Specifically, the blocking member is formed as an elastic member.

Further, the blocking member includes a plurality of elastically deformable elastic sheets, the plurality of elastic sheets are arranged around the center of the needle seat, and the plurality of elastic sheets are in contact with each other end to end to block the liquid channel.

Specifically, the inner wall of the needle seat is provided with a plurality of grooves that can accommodate a plurality of the elastic sheets one by one.

Additional aspects and advantages of the present invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

Fig. 1 is the structural representation of the syringe needle in the embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a blocking member in an embodiment of the present invention.

Reference number:

Syringe needle 100,

Needle bar 1, needle tip 12, liquid channel 13, first gas channel 14, gas outlet 15, concave portion 16,

Needle seat 2, second gas channel 21, gas inlet 22, groove 23, cavity 24,

Gas filter 3, convex part 31, filter substance 32,

Blocking cover 4.

Blocking member 5, elastic sheet 51,

stopper 6.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "center", "length", "upper", "lower", "top", "bottom", "inner", "outer" etc. refer to the orientation or position The relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore It should not be construed as a limitation of the present invention. Also, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

A syringe needle 100 according to an embodiment of the present invention is described below with reference to FIGS. 1-2 .

The syringe needle 100 according to the embodiment of the present invention, as shown in FIG. 1 , includes: a needle shaft 1 , a needle base 2 , an air filter 3 and a blocking cover 4 . The inside of the needle bar 1 includes a liquid channel 13 running through the length of the needle bar 1. The top of the needle bar 1 is provided with a needle tip 12, and the needle bar 1 is also provided with a first gas channel 14 spaced from the liquid channel 13. The needle bar 1 is provided with a gas outlet 15 which communicates with the first gas channel 14 . The needle bar 1 is connected with the needle seat 2, the needle seat 2 is provided with a second gas channel 21, the second gas channel 21 is communicated with the first gas channel 14, and the needle seat 2 is provided with a gas inlet communicated with the second gas channel 21 22; the air filter element 3 is arranged at the gas inlet 22 and communicated with the gas inlet 22. The blocking cover 4 is arranged on the air filter element 3 , and the blocking cover 4 can open and close the air filter element 3 .

It can be understood that the syringe can be suitable for the cooperation of the syringe needle 100, the blocking cover 4 is opened, and the air filtered by the air filter 3 can fill the space of the withdrawn medicinal liquid while the medicinal liquid is extracted, thereby reducing the generation of negative pressure, which can be highly efficient. , Hygienic and labor-saving extraction of liquid medicine. In addition, the potential contamination risk associated with drawing outside air to fill the space can be reduced. When the blocking member 4 is closed, the liquid medicine can suck the liquid in the syringe into the container through the negative pressure existing in the vacuum container itself, which minimizes the utilization of air and reduces the risk of contamination.

In actual use, when the liquid from the airtight container needs to be extracted, the syringe is matched with the needle seat 2, where the needle seat 2 can limit and fix the needle rod 1, which can improve the operation stability of the syringe needle 100. During the process of liquid extraction, negative pressure is generated in the container. At this time, the blocking cover 4 can be opened, and the air will enter the second gas channel 21 and the first gas channel 14 in turn through the gas inlet 22 through the air filter element 3, and then pass through the gas outlet. 15 places into the container, which can balance the negative pressure generated when the liquid is drawn, reduce the fatigue of the user due to the need to overcome the negative pressure, and also reduce the risk of contaminating the drug by drawing air into the container to balance the air pressure, which can improve the syringe. The work sanitation of the needle 100 improves the work efficiency of the user.

Clinically, some powdered drugs are stored in vacuum containers. When the powder medicine needs to be dissolved, after a syringe is used to extract the medicinal liquid, the syringe is suitable for the needle base 2 to be installed, and the liquid can be sucked into the vacuum container through the vacuum negative pressure of the container itself. At this time, the blocking cover 4 is in the state of closing the gas inlet 22 , which can reduce the situation of air entering the container due to the effect of negative pressure, and further improve the work hygiene of the syringe needle 100 . In addition, it should be noted that the reason why the blocking cover 4 closes the gas inlet 22 is also because if the blocking cover 4 is opened, the air will enter the container through the air filter 3, which will affect the passive inhalation of the medicinal liquid.

That is, the syringe needle 100 of the present invention is a multifunctional syringe needle 100, which can be used for extracting liquid under airtight conditions, and can also be used for mixing powder and liquid medicine under vacuum conditions, both of which can protect the sanitation of the medicine in the container. , reduce the pollution of drugs, of course, it can also be applied to general situations, such as the operation of atmospheric containers and open containers.

According to the syringe needle 100 according to the embodiment of the present invention, the application range of the syringe needle 100 can be expanded by the arrangement of the air filter 3 and the blocking member 5. For example, the syringe needle 100 can be suitable for extracting liquid in a sealed condition, thereby improving the syringe needle 100. improve the work sanitation and improve the user's work efficiency. The syringe needle 100 can also be used for mixing powder and liquid medicine under vacuum conditions, so as to protect the sanitation of the medicine. Of course, it can also be used in general situations, such as normal pressure containers, open containers, and the like.

In some embodiments, as shown in FIG. 1 , the gas inlet 22 is formed on the side wall of the needle hub 2 , and the gas outlet 15 is formed on the side wall of the needle shaft 1 . This facilitates processing and facilitates the flow of gas.

Specifically, as shown in FIG. 1 , the gas inlet 22 and the gas outlet 15 are located on the same side of the needle seat 2 and the needle bar 1 , respectively. This can reduce airflow loss and further improve the gas circulation efficiency.

In some embodiments, as shown in FIG. 1 , the air filter 3 includes: a raised portion 31 and a filter substance 32 disposed at the gas inlet 22 . The bulge portion 31 is provided with a cavity that communicates with the gas inlet 22 and external air, and a blocking cover 4 is provided on the bulge portion 31 to open and close the cavity. The filter substance 32 is arranged in the cavity. It can be understood that, on the one hand, the raised portion 31 can define a cavity that communicates with the gas inlet 22 and the outside air, which can reduce the contact area between the gas in the gas cavity and the outside air, and further improve the operational hygiene of the syringe needle 100. . On the other hand, the raised portion 31 can also provide an installation position for the blocking cover 4 to improve the installation stability of the blocking cover 4 . In addition, the cavity can limit the filter material 32 , improve the stability of the air filter 3 , reduce the contact area between the filter material 32 and the outside air, and improve the service life of the air filter 3 .

Specifically, as shown in FIG. 1 , the length of the raised portion 31 is greater than the length of the gas inlet 22 . It can be understood that the length of the raised portion 31 is greater than the length of the gas inlet 22 , so that the raised portion 31 can completely act on the gas inlet 22 and protect the cleanliness of the air at the gas inlet 22 .

In some embodiments, as shown in FIG. 1 , a concave portion 16 is provided on the side wall of the needle shaft 1, and the syringe needle 100 further includes a stopper piece 6, and the stopper piece 6 is arranged around a part of the concave portion 16 to define a first A gas channel 14 . It can be understood that the arrangement of the stopper 6 and the concave portion 16 can guide the flow of the gas, so that the gas flows along the first gas channel 14, which can improve the fluidity of the gas and reduce the first gas flow. The contact between the gas in the channel 14 and the outside air improves the cleanliness of the gas in the first gas channel 14 .

In the related art, after the negative pressure is generated by extracting the medicinal liquid clinically, when the medicinal liquid is extracted next time, it is necessary to draw air through a syringe and inject it into the container to eliminate the negative pressure. If the needle is left on the container, dirty air will enter the container through the syringe needle and fill the space created by the withdrawal of the liquid. However, the method of drawing air into the container to eliminate the negative pressure will also cause some contamination to the medicine.

In some embodiments, as shown in FIG. 1 , the syringe needle 100 further includes a blocking member 5 , the blocking member 5 is provided at the bottom of the needle base 2 , and the blocking member 5 is configured to normally block the liquid channel 13 , and is When the blocking member 5 is triggered, the liquid channel 13 can be opened. It can be understood that, in actual use, when the syringe needle 100 extracts the solution in the closed container, it may be suitable for the needle seat 2 to be installed to trigger the blocking member 5 to conduct the liquid channel 13 to realize the extraction of the medicinal liquid. After the extraction is completed, if the syringe needle 100 needs to be indwelled on the container, the syringe is withdrawn, and the blocking member 5 can block the liquid channel 13. At this time, the blocking cover 4 also closes the gas inlet 22, which can minimize the contact with the outside air. , to improve the work hygiene of the syringe needle 100 . Due to the existence of the blocking cover 4, the air filter 3 and the blocking member 5, the container is in a relatively airtight state, and the situation of air pollution is reduced as much as possible.

Specifically, the blocking member 5 is formed as an elastic member. It can be understood that the elastic member can be deformed when the force is applied, and can be restored to its original shape when the external force is removed. The transition of this movement state can be repeated and has high reliability, which is conducive to improving the operation stability of the blocking member 5. sex.

Further, as shown in FIG. 1 and FIG. 2 , the blocking member 5 includes a plurality of elastically deformable elastic pieces 51 , the plurality of elastic pieces 51 are arranged around the center of the needle hub 2 , and the plurality of elastic pieces 51 are in contact with each other end to end to The liquid passage 13 is blocked. It can be understood that, in actual use, the syringe can act on the center of the blocking member 5, and at this time, the plurality of elastic sheets 51 are deformed by force, so that the liquid channel 13 can be connected. When the syringe leaves the blocking member 5, the The plurality of elastic pieces 51 are restored and deformed to contact each other end to end, so that the liquid channel 13 can be blocked.

Furthermore, as shown in FIG. 1 and FIG. 2 , the inner wall of the needle holder 2 is provided with a plurality of grooves 23 that can accommodate a plurality of elastic pieces 51 one by one. It can be understood that the arrangement of the grooves 23 can provide a working space for the elastic sheet 51 and improve the operation stability of the elastic sheet 51 .

Optionally, the needle base 2 has a cavity 24 that can accommodate the medicinal liquid, at least a part of the needle shaft 1 extends into the cavity 24 , and the cavity 24 communicates with the liquid channel 13 . In this way, the blocking member 5 can seal the liquid channel 13 by blocking the cavity 24, thereby protecting the hygiene of the medicine.

The syringe needle 100 in one embodiment of the present invention is described below with reference to FIGS. 1-2 .

The syringe needle 100 according to the embodiment of the present invention includes: a needle shaft 1 , a needle seat 2 , an air filter 3 , a blocking cover 4 , a blocking member 5 and a stopper 6 .

The inside of the needle bar 1 includes a liquid channel 13 running through the length of the needle bar 1. The top of the needle bar 1 is provided with a needle tip 12, and the needle bar 1 is also provided with a first gas channel 14 spaced from the liquid channel 13. The needle bar 1 is provided with a gas outlet 15 which communicates with the first gas channel 14 .

The needle seat 2 is connected with the needle rod 1, the needle seat 2 is provided with a second gas channel 21, the second gas channel 21 is communicated with the first gas channel 14, and the needle seat 2 is provided with a gas inlet communicated with the second gas channel 21 twenty two. The gas inlet 22 is formed on the side wall of the needle base 2, the gas outlet 15 is formed on the side wall of the needle bar 1, and the gas inlet 22 and the gas outlet 15 are located on the same side.

The air filter 3 includes: a raised portion 31 and a filter substance 32 disposed at the gas inlet 22 . The bulge portion 31 defines a cavity that communicates with the gas inlet 22 and external air, and a blocking cover 4 is provided on the bulge portion 31 to open and close the cavity. The filter substance 32 is arranged in the cavity. The length of the raised portion 31 is greater than the length of the gas inlet 22 .

A concave portion 16 is provided on the side wall of the needle bar 1 , and the stopper piece 6 is disposed around a part of the concave portion 16 to define the first gas passage 14 .

The blocking member 5 is arranged on the bottom of the needle seat 2 . The blocking member 5 includes a plurality of elastically deformable elastic sheets 51 . The plurality of elastic sheets 51 are arranged around the center of the needle hub 2 , and the plurality of elastic sheets 51 are in contact with each other end to end to block the liquid channel 13 . The inner wall of the needle seat 2 is provided with a plurality of grooves 23 which can accommodate a plurality of elastic pieces 51 one by one.

In the description of this specification, description with reference to the terms "embodiment," "example," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention . In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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

Claims (10)

1. a syringe needle, is characterized in that, comprises: A needle bar, the interior of the needle bar includes a liquid channel running through the length direction of the needle bar, the top of the needle bar is provided with a needle tip, and the needle bar is also provided with a first spaced apart from the liquid channel. a gas channel, the needle bar is provided with a gas outlet communicating with the first gas channel; A needle seat, the needle rod is connected to the needle seat, the needle seat is provided with a second gas channel, the second gas channel is communicated with the first gas channel, and the needle seat is provided with a connection to the needle seat. the gas inlet communicated with the second gas passage; an air filter, the air filter is arranged at the gas inlet and communicated with the gas inlet; A blocking cover is provided on the air filter element, and the blocking cover can open and close the air filter element. 2 . The syringe needle according to claim 1 , wherein the gas inlet is formed on the side wall of the needle seat, and the gas outlet is formed on the side wall of the needle shaft. 3 . 3. The syringe needle of claim 2, wherein the gas inlet and the gas outlet are located on the same side of the needle seat and the needle shaft, respectively. 4. The syringe needle according to claim 1, wherein the air filter comprises: The bulge part is arranged at the gas inlet, the bulge is provided with a cavity that communicates with the gas inlet and the outside air, and the blocking cover is arranged on the bulge to open and close the gas inlet. said cavity; Filter material, the filter material is arranged in the cavity. 5. The syringe needle of claim 4, wherein the length of the raised portion is greater than the length of the gas inlet. 6 . The syringe needle according to claim 1 , wherein a concave portion is provided on the side wall of the needle rod, and the syringe needle further comprises a stopper piece, and the stopper piece surrounds the recessed portion. 7 . A portion is positioned to define the first gas passage. 7. The syringe needle according to claim 1, further comprising a blocking member, the blocking member is provided on the bottom of the needle base, and the blocking member is configured to normally block the liquid channel, and when the blocking member is triggered, the liquid channel can be opened. 8. The syringe needle of claim 7, wherein the blocking member is formed as a resilient member. 9 . The syringe needle according to claim 8 , wherein the blocking member comprises a plurality of elastically deformable elastic pieces, the plurality of elastic pieces are arranged around the center of the needle base, and the plurality of elastic pieces end with each other. 10 . contact with each other to block the liquid passage. 10 . The syringe needle according to claim 9 , wherein the inner wall of the needle seat is provided with a plurality of grooves that can accommodate a plurality of the elastic pieces one by one. 11 .

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