Syringe needle

Abstract

The application discloses an injector needle, which comprises a needle rod, a needle tip arranged on the top of the needle rod, a liquid channel arranged in the needle rod, a first gas channel arranged in the needle rod and spaced from the liquid channel, a gas outlet arranged on the needle rod and connected with the first gas channel, a needle seat connected with the needle rod, a second gas channel arranged on the needle seat and connected with the first gas channel, a gas inlet arranged on the needle seat and connected with the second gas channel, and an air filter arranged on the gas inlet and connected with the gas inlet. The injector needle can improve the operation hygiene of the injector needle and expand the application range of the injector needle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an injector needle. BACKGROUND

[0002] An injector is a device commonly used in clinical practice to extract liquid medicine. Clinical requirements require that the liquid medicine be in a sterile state, so the container holding the liquid medicine is usually in a closed state when the injector extracts the liquid medicine. During the extraction of liquid medicine from a sealed container, no air enters the sealed container to fill the space left by the extracted liquid medicine, resulting in negative pressure. Clinicians and nurses need to use more force to extract the liquid medicine. The process of extracting the liquid medicine not only wastes time but also easily causes hand fatigue, which is not conducive to subsequent clinical and nursing operations, especially in time-saving rescue.

[0003] Some powder medicines are stored in vacuum containers in clinical practice. When the powder medicine needs to be dissolved, the injector extracts the liquid medicine, and the liquid is sucked into the vacuum container through the vacuum negative pressure of the container itself. In this process, the hygiene of the liquid medicine needs to be protected.

[0004] However, in the related art, the injector needle is difficult to protect the hygiene of the medicine while being suitable for extracting liquid medicine in closed, vacuum, and open environments. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes an injector needle to improve the operation hygiene of the injector needle and expand the application range of the injector needle.

[0006] The injector needle according to an embodiment of the present application comprises: a needle shaft, the inside of the needle shaft comprising a liquid passage extending through the length direction of the needle shaft, the top of the needle shaft being provided with a needle tip, the needle shaft further comprising a first gas passage spaced apart from the liquid passage, the needle shaft being provided with a gas outlet communicating with the first gas passage; a needle seat, the needle shaft being connected to the needle seat, the needle seat being provided with a second gas passage, the second gas passage being in communication with the first gas passage, the needle seat being provided with a gas inlet communicating with the second gas passage; an air filter, the air filter being arranged at the gas inlet and in communication with the gas inlet; a blocking cover, the blocking cover being arranged on the air filter, the blocking cover being capable of opening and closing the air filter.

[0007] The syringe needle according to the embodiment of the present application can be applied to extract liquid in a sealed condition, thereby improving the operation hygiene and the operation efficiency of the user. The syringe needle can also be applied to mix powder and liquid medicine in a vacuum condition, thereby protecting the hygiene of the medicine, and can also be applied to a general condition, such as an atmospheric pressure container or an open container.

[0008] In some embodiments, the gas inlet is formed on a sidewall of the needle seat, and the gas outlet is formed on a sidewall of the needle rod.

[0009] Specifically, the gas inlet and the gas outlet are located on the same side of the needle seat and the needle rod, respectively.

[0010] In some embodiments, the air filter includes a protruding portion provided at the gas inlet, a cavity communicating with the gas inlet and external air is provided in the protruding portion, and the sealing cover is provided on the protruding portion to open and close the cavity; and a filter material is provided in the cavity.

[0011] Specifically, the length of the protruding portion is greater than the length of the gas inlet.

[0012] In some embodiments, a recessed portion is provided on the sidewall of the needle rod, and the syringe needle further includes a stop sheet, which is arranged around a part of the recessed portion to define the first gas channel.

[0013] In some embodiments, the syringe needle further includes a sealing member provided at the bottom of the needle seat, which is configured to normally seal the liquid channel and to open the liquid channel when the sealing member is triggered.

[0014] Specifically, the sealing member is formed as an elastic member.

[0015] Further, the sealing member includes a plurality of elastically deformable elastic sheets, which are arranged around the center of the needle seat and contact each other to seal the liquid channel.

[0016] Specifically, the inner wall of the needle seat is provided with a plurality of grooves for accommodating the plurality of elastic sheets one by one.

[0017] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings of which:

[0019] Figure 1 Structure diagram of the syringe needle in the embodiment of the present application;

[0020] Figure 2 Structure diagram of the plugging member in the embodiment of the present application.

[0021] Reference signs:

[0022] syringe needle 100,

[0023] needle shaft 1, needle tip 12, liquid passage 13, first gas passage 14, gas outlet 15, recess 16,

[0024] needle seat 2, second gas passage 21, gas inlet 22, groove 23, cavity 24,

[0025] gas filter 3, protrusion 31, filter material 32,

[0026] plugging cover 4,

[0027] plugging member 5, elastic sheet 51,

[0028] stop sheet 6. DETAILED DESCRIPTION

[0029] The embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below are exemplary only, and are not intended to be limiting of the present application. Rather, the present application is to be understood by what is described and defined in the appended claims. Such embodiments of the present application as can have been described and illustrated herein are not necessarily the only embodiments of the application. Indeed, various embodiments of the application can be devised without departing from the spirit or scope of the present application.

[0030] In the description of the present application, it is to be understood that the terms "center", "length", "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, in the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] The following is for reference. Figures 1-2 A syringe needle 100 according to an embodiment of the present invention is described.

[0033] The syringe needle 100 according to an embodiment of the present invention, such as Figure 1 As shown, the device includes: a needle rod 1, a needle holder 2, an air filter 3, and a sealing cap 4. The needle rod 1 has a liquid channel 13 extending along its length. A needle tip 12 is located at the top of the needle rod 1. A first gas channel 14, spaced apart from the liquid channel 13, is also located inside the needle rod 1. A gas outlet 15, connected to the first gas channel 14, is located on the needle rod 1. The needle rod 1 is connected to the needle holder 2. The needle holder 2 has a second gas channel 21, which communicates with the first gas channel 14. A gas inlet 22, also connected to the second gas channel 21, is located on the needle holder 22 and communicates with it. The sealing cap 4 is located on the air filter 3 and can open and close the air filter 3.

[0034] Understandably, the syringe is compatible with the syringe needle 100. When the sealing cap 4 is opened, the air filtered by the air filter 3 fills the space occupied by the extracted medication, reducing negative pressure and enabling efficient, hygienic, and labor-saving medication extraction. Furthermore, it reduces the potential contamination risk associated with drawing in external air to fill the space. When the sealing cap 4 is closed, the medication is drawn into the container by the negative pressure inherent in the vacuum container itself, minimizing air utilization and reducing the risk of contamination.

[0035] In actual use, when the liquid in the sealed container needs to be extracted, the syringe is fitted to the needle seat 2, which can limit and fix the needle rod 1, thereby improving the operation stability of the syringe needle 100. During the extraction of the liquid, a negative pressure is generated in the container, at which time the blocking cover 4 can be opened, and air can enter the second gas passage 21, the first gas passage 14, and the container from the gas inlet 22 in sequence through the air filter 3 and the gas outlet 15, thereby balancing the negative pressure generated during the extraction of the liquid, reducing the fatigue of the user due to the need to overcome the negative pressure, reducing the risk of contamination of the drug caused by the injection of air into the container to balance the gas pressure, improving the operation hygiene of the syringe needle 100, and improving the operation efficiency of the user.

[0036] In clinical practice, some powdered drugs are stored in vacuum containers. When the powdered drug needs to be dissolved, the syringe is fitted to the needle seat 2 after the drug liquid is extracted, and the liquid can be sucked into the vacuum container through the negative pressure of the container itself. At this time, the blocking cover 4 is in a state of closing the gas inlet 22, which can reduce the entry of air into the container due to the action of negative pressure, thereby further improving the operation hygiene of the syringe needle 100. In addition, it should be noted that the blocking cover 4 closes the gas inlet 22 because if the blocking cover 4 is opened, air will enter the container through the air filter 3, which will affect the passive suction of the drug liquid.

[0037] That is, the syringe needle 100 of the present application is a multifunctional syringe needle 100 that can be used to extract liquid in a sealed condition and can be used to mix powder and drug liquid in a vacuum condition, both of which can protect the hygiene of the drug in the container and reduce the contamination of the drug. Of course, it can also be used in general conditions, such as in normal pressure containers and open containers.

[0038] According to the syringe needle 100 of the embodiment of the present application, the air filter 3 and the blocking member 5 are arranged, which can expand the application range of the syringe needle 100, for example, the syringe needle 100 can be used to extract liquid in a sealed condition, thereby improving the operation hygiene of the syringe needle 100 and improving the operation efficiency of the user. The syringe needle 100 can also be used for mixing powder and drug liquid in a vacuum condition, thereby protecting the hygiene of the drug, and of course it can also be used in general conditions, such as in normal pressure containers and open containers.

[0039] In some embodiments, as shown in Figure 1 The gas inlet 22 is formed on the side wall of the needle seat 2, and the gas outlet 15 is formed on the side wall of the needle rod 1. This facilitates processing and is conducive to the flow of gas.

[0040] Specifically, as shown in Figure 1As shown, the gas inlet 22 and the gas outlet 15 are located at the same side of the needle seat 2 and the needle rod 1 respectively. In this way, the gas flow loss can be reduced, and the gas flow efficiency can be further improved.

[0041] In some embodiments, as shown in Figure 1 The air filter 3 includes a protruding part 31 and a filter material 32, which are arranged at the gas inlet 22. The protruding part 31 is provided with a cavity for connecting the gas inlet 22 and the external air, and the sealing cover 4 is arranged on the protruding part 31 to open and close the cavity. The filter material 32 is arranged in the cavity. It can be understood that, on the one hand, the protruding part 31 can define the cavity for connecting the gas inlet 22 and the external air, so as to reduce the contact area between the gas in the cavity and the external air, and further improve the operation hygiene of the syringe needle 100. On the other hand, the protruding part 31 can also provide a mounting position for the sealing cover 4, thereby improving the mounting stability of the sealing cover 4. In addition, the cavity can limit the filter material 32, thereby improving the action stability of the air filter 3, reducing the contact area between the filter material 32 and the external air, and improving the service life of the air filter 3.

[0042] Specifically, as shown in Figure 1 The length of the protruding part 31 is greater than the length of the gas inlet 22. It can be understood that, by making the length of the protruding part 31 greater than the length of the gas inlet 22, the protruding part 31 can fully act on the gas inlet 22, thereby protecting the cleanliness of the air at the gas inlet 22.

[0043] In some embodiments, as shown in Figure 1 The side wall of the needle rod 1 is provided with a recessed part 16, and the syringe needle 100 further includes a stop sheet 6, which is arranged around a part of the recessed part 16 to define the first gas channel 14. It can be understood that, by arranging the stop sheet 6 and the recessed part 16, the flow of the gas can be guided, so that the gas flow along the first gas channel 14, the flow of the gas can be improved, and the contact between the gas in the first gas channel 14 and the external air can be reduced, thereby improving the cleanliness of the gas in the first gas channel 14.

[0044] In the related art, after the negative pressure is generated when the drug liquid is extracted in the clinic, the air is extracted by the syringe to be injected into the container to eliminate the negative pressure when the drug liquid is extracted next time. If the needle is left on the container, unclean air will enter the container through the syringe needle to fill the space generated after the drug liquid is extracted. However, the method of extracting air to be injected into the container to eliminate the negative pressure will also pollute the medicine to a certain extent.

[0045] In some embodiments, as shown in Figure 1As shown, the syringe needle 100 further comprises a blocking member 5 arranged at the bottom of the needle seat 2, which is configured to normally block the liquid channel 13 and to open the liquid channel 13 when the blocking member 5 is triggered. It can be understood that, in actual use, when the syringe needle 100 extracts the solution in the closed container, the needle seat 2 can be fitted to trigger the blocking member 5, thereby opening the liquid channel 13 to achieve the extraction of the liquid medicine. After the extraction is completed, if it is necessary to leave the syringe needle 100 on the container, the syringe is withdrawn, the blocking member 5 can block the liquid channel 13, and at this time the blocking cover 4 also closes the gas inlet 22, which can minimize the contact with the external air and improve the operation hygiene of the syringe needle 100. Due to the presence of the blocking cover 4, the air filter 3 and the blocking member 5, the container is in a relatively closed state, which can minimize the air pollution.

[0046] Specifically, the blocking member 5 is formed as an elastic member. It can be understood that the elastic member can deform when subjected to force, and can restore its original shape after the external force is removed. This change in motion state can be repeated and has high reliability, thereby being beneficial to improve the operation stability of the blocking member 5.

[0047] Further, as shown in Figure 1 and Figure 2 , the blocking member 5 comprises a plurality of elastically deformable elastic pieces 51, which are arranged around the center of the needle seat 2 and contact each other at their ends to block the liquid channel 13. It can be understood that, in actual use, the syringe can act on the center of the blocking member 5, at which time the plurality of elastic pieces 51 are deformed under force, thereby opening the liquid channel 13. When the syringe leaves the blocking member 5, the plurality of elastic pieces 51 restore the deformation to contact each other at their ends, thereby blocking the liquid channel 13.

[0048] Further, as shown in Figure 1 and Figure 2 , the inner wall of the needle seat 2 is provided with a plurality of grooves 23 which can accommodate the plurality of elastic pieces 51 one by one. It can be understood that the provision of the grooves 23 can provide operation space for the elastic pieces 51 and improve the operation stability of the elastic pieces 51.

[0049] Optionally, the needle seat 2 has a cavity 24 which can accommodate the liquid medicine, and at least a portion of the needle rod 1 extends into the cavity 24, which is in communication with the liquid channel 13. In this way, the blocking member 5 can block the cavity 24 to achieve the closure of the liquid channel 13, thereby protecting the hygiene of the medicine.

[0050] The syringe needle 100 in one specific embodiment of the present application will be described below with reference to Figures 1-2 .

[0051] The syringe needle 100 according to the embodiment of the present application comprises a needle rod 1, a needle seat 2, an air filter 3, a blocking cover 4, a blocking member 5 and a stopper 6.

[0052] The needle rod 1 comprises a liquid channel 13 extending through the length of the needle rod 1, a needle tip 12 at the top of the needle rod 1, a first gas channel 14 in the needle rod 1 spaced from the liquid channel 13, and a gas outlet 15 on the needle rod 1 communicating with the first gas channel 14.

[0053] The needle seat 2 is connected to the needle rod 1, and comprises a second gas channel 21 on the needle seat 2 communicating with the first gas channel 14, and a gas inlet 22 on the needle seat 2 communicating with the second gas channel 21. The gas inlet 22 is formed on the side wall of the needle seat 2, and the gas outlet 15 is formed on the side wall of the needle rod 1, and the gas inlet 22 and the gas outlet 15 are located on the same side.

[0054] The air filter 3 comprises a protrusion 31 at the gas inlet 22 and a filter material 32. The protrusion 31 defines a cavity communicating with the gas inlet 22 and the outside air, and the blocking cover 4 is arranged on the protrusion 31 to open and close the cavity. The filter material 32 is arranged in the cavity. The length of the protrusion 31 is greater than the length of the gas inlet 22.

[0055] The side wall of the needle rod 1 comprises a recess 16, and the stopper 6 is arranged around a portion of the recess 16 to define the first gas channel 14.

[0056] The blocking member 5 is arranged at the bottom of the needle seat 2. The blocking member 5 comprises a plurality of elastically deformable elastic pieces 51 arranged around the center of the needle seat 2, and the plurality of elastic pieces 51 contact each other to block the liquid channel 13. The inner wall of the needle seat 2 comprises a plurality of grooves 23 arranged to accommodate the plurality of elastic pieces 51 one by one.

[0057] In the description of the present specification, the description referring to the terms "embodiment", "example", and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A syringe needle, characterized in that The injection needle comprises: a needle rod, an inner portion of the needle rod comprising a liquid channel extending through a length of the needle rod, a top portion of the needle rod comprising a needle tip, the needle rod further comprising a first gas channel spaced apart from the liquid channel, the needle rod further comprising a gas outlet in communication with the first gas channel; a needle base, the needle rod being connected to the needle base, the needle base comprising a second gas channel in communication with the first gas channel, the needle base further comprising a gas inlet in communication with the second gas channel; an air filter, the air filter being disposed at and in communication with the gas inlet; a blocking cap, the blocking cap being disposed on the air filter, the blocking cap being operable to open and close the air filter; the gas inlet being formed on a sidewall of the needle base, the gas outlet being formed on a sidewall of the needle rod; the sidewall of the needle rod comprising a recess, the injection needle further comprising a stopper, the stopper being disposed around a portion of the recess to define the first gas channel; the air filter comprising: a protrusion disposed at the gas inlet, the protrusion comprising a cavity in communication with the gas inlet and an external air, the blocking cap being disposed on the protrusion to open and close the cavity; a filter material, the filter material being disposed in the cavity; a blocking member, the blocking member being disposed at a bottom portion of the needle base, the blocking member being configured to normally block the liquid channel, the blocking member being operable to unblock the liquid channel upon actuation of the blocking member.

2. The syringe needle of claim 1, wherein the gas inlet and the gas outlet are located on the same side of the needle base and the needle rod, respectively.

3. The syringe needle of claim 1, wherein a length of the protrusion is greater than a length of the gas inlet.

4. The syringe needle of claim 3, wherein the blocking member is formed as an elastic member.

5. The syringe needle of claim 4, wherein, the blocking member comprises a plurality of elastic pieces, the plurality of elastic pieces being disposed around a center of the needle base, the plurality of elastic pieces being in contact with each other to block the liquid channel.

6. The syringe needle of claim 5, wherein, an inner wall of the needle base comprises a plurality of grooves configured to receive the plurality of elastic pieces, respectively. the plurality of elastic pieces are disposed around the center of the needle base.

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