Side hole needle capable of balancing air pressure

Abstract

The utility model relates to a side hole needle capable of balancing air pressure, and relates to the technical field of medical instruments. Comprising a needle point body and a waterproof breathable film, and the needle point body is inserted into a penicillin bottle; a liquid flow channel and an air flow channel are formed in the needle point body; one end of the liquid flow channel extends into the penicillin bottle, and the other end is positioned outside the penicillin bottle; one end of the air flow channel extends into the penicillin bottle, and the other end is located outside the penicillin bottle. The water-permeable membrane is arranged at one end, extending into the penicillin bottle, of the airflow channel. The injection and extraction process of the side hole needle does not need to repeatedly push a side hole needle body to extract or inject air into a penicillin bottle for balancing air pressure, the working efficiency is improved, and the problems that when an existing side hole needle carries out injection and extraction work into the penicillin bottle, the steps are tedious, and the working efficiency is affected are solved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a side-hole needle that can balance air pressure. Background Technology

[0002] The process of mixing medication in vials includes two steps: injection and extraction. In the injection step, medical staff use a side-hole needle to extract the solvent and inject it into the vial. After the injection is completed, the needle is withdrawn to the mouth of the vial and air is drawn back to equalize the air pressure.

[0003] During the aspiration step, the solvent needs to be extracted from the vial, which will cause a drop in the air pressure inside the vial and affect subsequent extractions. Therefore, it is necessary to inject air into the vial in advance to balance the air pressure.

[0004] Therefore, it can be seen that the traditional side-hole needle is cumbersome and affects work efficiency when injecting and extracting into the vial.

[0005] Regarding the aforementioned technologies, the existing side-hole needles have the problem of being cumbersome and affecting work efficiency when performing injection and extraction operations into vials. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a side-hole needle that can balance air pressure, in order to solve the problem that the existing side-hole needles are cumbersome and affect work efficiency when injecting and extracting into vials.

[0007] The side-hole needle for balancing air pressure provided in this application adopts the following technical solution: A side-hole needle for balancing air pressure includes:

[0008] A needle tip body is inserted into the vial; a liquid flow channel and an air flow channel are formed within the needle tip body; one end of the liquid flow channel extends into the vial, and the other end is located outside the vial; one end of the air flow channel extends into the vial, and the other end is located outside the vial.

[0009] A waterproof and breathable membrane is provided at one end of the airflow channel that extends into the vial.

[0010] Optionally, the needle tip body is provided with an inlet hole and an outlet hole;

[0011] The liquid inlet is located at one end of the needle tip body, and the liquid inlet is connected to the liquid flow channel. The liquid inlet is used to extend into the vial.

[0012] The liquid outlet is located at one end of the liquid flow channel away from the liquid inlet, and the liquid outlet is connected to the liquid flow channel;

[0013] The needle tip body is provided with a first air hole and a second air hole;

[0014] The first vent is located at one end of the needle tip body, close to the liquid inlet, and communicates with the airflow channel. The first vent is used to extend into the vial.

[0015] The second vent is located near the liquid outlet, and the second vent is connected to the airflow channel. The second vent is used to be located on the outside of the vial.

[0016] The waterproof and breathable membrane is disposed on the first air hole.

[0017] Optionally, the needle tip body includes a needle tip and a needle shaft, one end of the needle shaft is connected to the needle tip, and the liquid inlet, the liquid outlet, the first air hole and the second air hole are all disposed on the needle shaft;

[0018] The liquid inlet and the first air hole are positioned close to the needle tip;

[0019] The liquid outlet and the second air hole are positioned away from the needle tip.

[0020] Optionally, the liquid outlet is located at the end of the needle bar opposite to the needle tip.

[0021] Optionally, the needle bar includes an outer part of the bottle, an inner part of the bottle, and a transition section;

[0022] The outer part of the bottle, the transition section, and the inner part of the bottle are connected in sequence, and the end of the inner part of the bottle opposite to the transition section is connected to the needle tip;

[0023] The liquid outlet is located on the outside of the bottle at one end away from the transition section;

[0024] The second vent is located on the outside of the bottle;

[0025] When the needle bar is inserted into the vial, the outside of the vial is located outside the vial, the inside of the vial is located inside the vial, part of the transition portion is located outside the vial, and another part of the transition portion is located inside the vial.

[0026] Optionally, the transition portion is provided with a protrusion for abutting against the bottle opening.

[0027] Optionally, the distance from the protrusion to the end of the needle tip away from the needle bar is less than or equal to the height of the vial.

[0028] Optionally, the distance from the protrusion to the end of the needle tip away from the needle bar is greater than or equal to 0.5 cm, and the distance from the protrusion to the end of the needle tip away from the needle bar is less than or equal to 1 cm.

[0029] Optionally, the pressure-balancing side-hole needle includes a needle plug, which is disposed at the end of the needle shaft away from the needle tip. The needle plug has an installation channel that communicates with the liquid outlet. The needle plug is used to install the pressure-balancing side-hole needle to the syringe tip.

[0030] Optionally, the waterproof and breathable membrane is an expanded polytetrafluoroethylene membrane or a polyurethane membrane.

[0031] Compared with the prior art, the embodiments of this utility model have the following advantages:

[0032] The side-hole needle is first inserted into the vial, with one end of both the liquid flow channel and the gas flow channel entering the vial, while the other ends of both channels are exposed to the outside. The solvent can be injected into the vial under the guidance of the liquid flow channel. During the injection process, as the solvent enters, air inside the vial can enter the gas flow channel and eventually be expelled to the outside, thus balancing the air pressure inside the vial.

[0033] The presence of the waterproof and breathable membrane isolates the solvent from the airflow channel, preventing the solvent from entering the airflow channel.

[0034] Next, the vial is shaken to mix the solvent inside.

[0035] Finally, the solvent in the vial is extracted. At this time, the end of the liquid flow channel that enters the vial is withdrawn to the mouth of the vial to extract the solvent. During the extraction process, outside air enters the vial from the outside through the air flow channel, thereby achieving a balance between the air pressure inside the vial and the outside air pressure, so that the side needle can smoothly extract the solvent from the vial.

[0036] The entire process of solvent injection and extraction no longer requires repeatedly pushing the side-hole needle body to extract or inject air into the vial in order to balance the air pressure, which improves work efficiency, reduces the fatigue of workers, and solves the problem that the existing side-hole needle is cumbersome and affects work efficiency when injecting and extracting into the vial. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the overall structure of the side-hole needle that can balance air pressure in the embodiment of this application;

[0039] Figure 2 This is a schematic diagram of the overall structure of the side hole needle that can balance air pressure at different angles in the embodiments of this application;

[0040] Figure 3 This is a schematic diagram of the overall structure of the side hole needle that can balance air pressure at different angles in the embodiments of this application;

[0041] Figure 4 yes Figure 3 Enlarged view of section A;

[0042] Figure 5 This is a cross-sectional view of the side-hole needle that can balance air pressure in the embodiment of this application.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Needle tip body; 11. Liquid flow channel; 12. Air flow channel; 13. Needle tip; 14. Needle shaft; 141. Bottle exterior; 142. Bottle interior; 143. Transition section; 1431. Protrusion; 2. Liquid inlet; 3. Liquid outlet; 4. First vent; 41. Waterproof and breathable membrane; 5. Second vent; 6. Needle plug; 61. Installation channel. Detailed Implementation

[0045] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] The present application will be further described in detail below with reference to the accompanying drawings.

[0047] This application discloses a side-hole needle that can balance air pressure.

[0048] like Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, a pressure-balancing side-hole needle includes a needle tip body 1 and a waterproof and breathable membrane 41. The needle tip body 1 is inserted into a vial. A liquid flow channel 11 and an air flow channel 12 are formed inside the needle tip body 1. One end of the liquid flow channel 11 extends into the vial, and the other end is located outside the vial. One end of the air flow channel 12 extends into the vial, and the other end is located outside the vial. The waterproof and breathable membrane is disposed at the end of the air flow channel 12 that extends into the vial.

[0049] The side-hole needle is first inserted into the vial. One end of both the liquid flow channel 11 and the gas flow channel 12 enters the vial, while the other ends of both channels are located outside. The solvent can be injected into the vial under the guidance of the liquid flow channel 11. During the injection process, as the solvent enters, air inside the vial can enter the gas flow channel 12 and eventually be discharged to the outside, thereby balancing the air pressure inside the vial.

[0050] The presence of the waterproof and breathable membrane 41 isolates the solvent from the airflow channel 12, preventing the solvent from entering the airflow channel 12.

[0051] Next, the vial is shaken to mix the solvent inside.

[0052] Finally, the solvent in the vial is extracted. At this time, the end of the liquid flow channel 11 that enters the vial is withdrawn to the mouth of the vial to extract the solvent. During the extraction process, outside air enters the vial from the outside through the air flow channel 12, thereby achieving a balance between the air pressure inside the vial and the outside air pressure, so that the side needle can smoothly extract the solvent from the vial.

[0053] The entire process of solvent injection and extraction no longer requires repeatedly pushing the side-hole needle body to extract or inject air into the vial in order to balance the air pressure, which improves work efficiency, reduces the fatigue of workers, and solves the problem that the existing side-hole needle is cumbersome and affects work efficiency when injecting and extracting into the vial.

[0054] like Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the needle tip body 1 is provided with an inlet hole 2 and an outlet hole 3. The inlet hole 2 is located at one end of the needle tip body 1 and is connected to the liquid flow channel 11. The inlet hole 2 is used to extend into the vial. The outlet hole 3 is located at the end of the liquid flow channel 11 away from the inlet hole 2 and is connected to the liquid flow channel 11. The needle tip body 1 is provided with a first vent 4 and a second vent 5. The first vent 4 is located at one end of the needle tip body 1, close to the inlet hole 2, and is connected to the air flow channel 12. The first vent 4 is used to extend into the vial. The second vent 5 is located close to the outlet hole 3 and is connected to the air flow channel 12. The second vent 5 is used to be placed outside the vial. A waterproof and breathable membrane 41 is provided on the first vent 4.

[0055] Specifically, the side-hole needle is first inserted into the vial, and both the inlet hole 2 and the first vent hole 4 enter the vial. The second vent hole 5 is located to the outside. The solvent flows out of the inlet hole 2 through the outlet hole 3 and is injected into the vial under the guidance of the liquid flow channel 11. During the injection process, as the solvent enters, the air inside the vial can pass through the first vent hole 4 into the air flow channel 12 and finally be discharged to the outside through the second vent hole 5, thereby balancing the air pressure inside the vial.

[0056] The presence of the waterproof and breathable membrane 41 isolates the solvent from the airflow channel 12, preventing the solvent from entering the airflow channel 12.

[0057] Next, the vial is shaken to mix the solvent inside.

[0058] Finally, the solvent in the vial is extracted. At this time, the inlet hole 2 is withdrawn to the mouth of the vial to extract the solvent. During the extraction process, outside air enters through the second vent hole 5 and is introduced into the vial through the first vent hole 4, thereby achieving a balance between the air pressure inside the vial and the outside air pressure, so that the side needle can smoothly extract the solvent from the vial.

[0059] The entire solvent injection and extraction process eliminates the need for repeatedly pushing the side-hole needle to extract or inject air into the vial to balance the pressure, improving work efficiency, reducing worker fatigue, and solving the problem of cumbersome steps and reduced efficiency associated with existing side-hole needle injection and extraction procedures. Furthermore, it avoids multiple punctures of the vial stopper, preventing the formation of foreign objects in the stopper.

[0060] like Figure 1 , Figure 3 and Figure 4 As shown, the waterproof and breathable membrane 41 is an expanded polytetrafluoroethylene (ePTFE) membrane or a polyurethane (TPU) membrane.

[0061] ePTFE membranes have excellent waterproof performance, effectively preventing the passage of liquid water while allowing water vapor molecules to pass through smoothly. They also have good mechanical strength and flexibility, making them resistant to damage. In this embodiment, the waterproof and breathable membrane 41 is an ePTFE membrane.

[0062] The liquid inlet hole 2 is one of a circular hole, an elliptical hole, or an elongated hole.

[0063] In this embodiment, the liquid inlet hole 2 is an elongated hole.

[0064] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the needle tip body 1 includes a needle tip 13 and a needle bar 14. One end of the needle bar 14 is connected to the needle tip 13, and the needle tip 13 facilitates the operation of inserting the side-hole needle into the vial.

[0065] The liquid inlet 2, liquid outlet 3, first air hole 4 and second air hole 5 are all provided on the needle rod 14; the liquid inlet 2 and the first air hole 4 are located close to the needle tip 13; the liquid outlet 3 and the second air hole 5 are located away from the needle tip 13.

[0066] Specifically, both the liquid flow channel 11 and the air flow channel 12 are direct flow channels, and both the liquid flow channel 11 and the air flow channel 12 are located inside the needle bar 14, and the liquid flow channel 11 and the air flow channel 12 are arranged in parallel.

[0067] To facilitate the full absorption of the solvent in the vial, both the liquid inlet 2 and the first vent 4 are positioned close to the needle tip 13.

[0068] The outlet hole 3 is located at the end of the needle bar 14 away from the needle tip 13, so that the solvent can be drawn into the syringe or other container through the outlet hole 3.

[0069] To prevent the second vent 5 from being inserted into the vial during use, the second vent 5 is positioned near the end of the needle bar 14 away from the needle tip 13.

[0070] Furthermore, the distance from the second pore 5 to the needle tip 13 is greater than the height of the vial.

[0071] like Figure 1 and Figure 2As shown, the needle bar 14 includes an outer bottle 141, an inner bottle 142, and a transition section 143. The outer bottle 141, transition section 143, and inner bottle 142 are connected sequentially, with the end of the inner bottle 142 facing away from the transition section 143 connected to the needle tip 13. An outlet hole 3 is located at the end of the outer bottle 141 facing away from the transition section 143. A second vent hole 5 is located on the outer bottle 141. When the needle bar 14 is inserted into the vial, the outer bottle 141 is located outside the vial, the inner bottle 142 is located inside the vial, part of the transition section 143 is located outside the vial 141, and another part of the transition section 143 is located inside the vial 142.

[0072] Specifically, the use of vials involves two steps: injection and extraction. The injection step involves injecting the solvent into the vial, and the extraction step involves removing the solvent from the vial.

[0073] The medical staff use different techniques for these two steps.

[0074] For the injection procedure, the vial is positioned with the bottom facing down and the opening facing up. Medical personnel inject the solvent into the vial. At this time, the needle tip 13 should be slightly inserted into the vial, close to the bottom.

[0075] After the solvent in the vial is replenished and shaken, the extraction step begins. To extract the solvent from the vial to the maximum extent, the medical staff should place the vial with the bottom facing up and the mouth facing down, and slightly move the side needle body so that the inlet hole 2 is closer to the mouth of the vial.

[0076] Regardless of the injection and extraction steps of the vial, the inside 142 of the vial is always inside the vial, and the outside 141 of the vial is always outside the vial. Only the transition part 143 switches between inside and outside the vial as the side needle body moves.

[0077] like Figure 1 and Figure 2 As shown, a protrusion 1431 is provided on the transition portion 143, and the protrusion 1431 is used to abut against the bottle mouth.

[0078] Specifically, the protrusion 1431 is positioned close to the outer surface 141 of the vial. The distance from the protrusion 1431 to the end of the needle tip 13 away from the needle bar 14 is less than or equal to the height of the vial. This prevents the needle tip 13 from extending excessively into the bottom of the vial and avoids the needle tip 13 from breaking off due to contact with the bottom of the vial, which could affect the injection and extraction of the solvent.

[0079] Furthermore, the distance from the protrusion 1431 to the end of the needle tip 13 away from the needle bar 14 is greater than or equal to 0.5 cm, and the distance from the protrusion 1431 to the end of the needle tip 13 away from the needle bar 14 is less than or equal to 1 cm.

[0080] like Figure 1 , Figure 2 and Figure 5 As shown, the pressure-balancing side-hole needle includes a needle plug 6, which is located at the end of the needle shaft 14 away from the needle tip 13. The needle plug 6 has an installation channel 61 that communicates with the liquid outlet 3. The needle plug 6 is used to install the pressure-balancing side-hole needle to the syringe tip.

[0081] Specifically, the needle plug 6 is generally shaped like a frustum. The installation channel 61 runs through the needle plug 6 along its axis. The end of the installation channel 61 at the bottom of the needle plug 6 is installed to the syringe tip. The opening of the syringe tip is connected to the installation channel 61. The end of the installation channel 61 at the top of the needle plug 6 is connected to the end of the bottle exterior 141 away from the transition part 143. The liquid outlet 3 is connected to the installation channel 61. The solvent can be injected into the vial or drawn into the syringe through the installation channel 61.

[0082] In summary, a pressure-balancing side-hole needle includes a needle tip body 1, a liquid inlet 2, a liquid outlet 3, a first vent 4, a second vent 5, and a waterproof and breathable membrane 41. The needle tip body 1 has a liquid flow channel 11 and an air flow channel 12 formed within it. The liquid inlet 2 is located at one end of the needle tip body 1, communicating with the liquid flow channel 11, and is used to extend into a bottle. The liquid outlet 3 is located at the end of the liquid flow channel 11 opposite to the liquid inlet 2, and is communicated with the liquid flow channel 11. The first vent 4 is located at one end of the needle tip body 1, close to the liquid inlet 2, communicating with the air flow channel 12, and is used to extend into a bottle. The second vent 5 is located close to the liquid outlet 3, communicating with the air flow channel 12, and is used to be positioned outside the bottle. The waterproof and breathable membrane 41 is disposed on the first vent 4.

[0083] The side-hole needle is first inserted into the vial, and both the inlet hole 2 and the first vent hole 4 enter the vial. The second vent hole 5 is located to the outside. The solvent flows out of the inlet hole 2 through the outlet hole 3 and is injected into the vial under the guidance of the liquid flow channel 11. During the injection process, as the solvent enters, the air inside the vial can pass through the first vent hole 4 into the air flow channel 12 and finally be discharged to the outside through the second vent hole 5, thereby balancing the air pressure inside the vial.

[0084] The presence of the waterproof and breathable membrane 41 isolates the solvent from the airflow channel 12, preventing the solvent from entering the airflow channel 12.

[0085] Next, the vial is shaken to mix the solvent inside.

[0086] Finally, the solvent in the vial is extracted. At this time, the inlet hole 2 is withdrawn to the mouth of the vial to extract the solvent. During the extraction process, outside air enters through the second vent and is introduced into the vial through the first vent hole 4, thereby achieving a balance between the air pressure inside the vial and the outside air pressure, so that the side needle can successfully extract the solvent from the vial.

[0087] The entire solvent injection and extraction process eliminates the need for repeatedly pushing the side-hole needle to extract or inject air into the vial to balance the pressure, improving work efficiency, reducing worker fatigue, and solving the problem of cumbersome steps and reduced efficiency associated with existing side-hole needle injection and extraction procedures. Furthermore, it avoids multiple punctures of the vial stopper, preventing the formation of foreign objects in the stopper.

[0088] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0089] It should be noted that this utility model uses a side-hole needle that can balance air pressure as an example to introduce the specific structure and working principle of this utility model. However, the application of this utility model is not limited to a side-hole needle that can balance air pressure, and it can also be applied to the production and use of other similar workpieces.

[0090] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

[0091] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressure-balancing side-hole needle for use in vials; characterized in that, include: A needle tip body is inserted into the vial; a liquid flow channel and an air flow channel are formed within the needle tip body; one end of the liquid flow channel extends into the vial, and the other end is located outside the vial; one end of the air flow channel extends into the vial, and the other end is located outside the vial. A waterproof and breathable membrane is provided at one end of the airflow channel that extends into the vial.

2. The side-hole needle capable of balancing air pressure according to claim 1, characterized in that, The needle tip body is provided with a liquid inlet hole and a liquid outlet hole; The liquid inlet is located at one end of the needle tip body, and the liquid inlet is connected to the liquid flow channel. The liquid inlet is used to extend into the vial. The liquid outlet is located at one end of the liquid flow channel away from the liquid inlet, and the liquid outlet is connected to the liquid flow channel; The needle tip body is provided with a first air hole and a second air hole; The first vent is located at one end of the needle tip body, close to the liquid inlet, and communicates with the airflow channel. The first vent is used to extend into the vial. The second vent is located near the liquid outlet, and the second vent is connected to the airflow channel. The second vent is used to be located on the outside of the vial. The waterproof and breathable membrane is disposed on the first air hole.

3. The side-hole needle capable of balancing air pressure according to claim 2, characterized in that, The needle tip body includes a needle tip and a needle shaft, one end of the needle shaft is connected to the needle tip, and the liquid inlet, the liquid outlet, the first air hole and the second air hole are all provided on the needle shaft; The liquid inlet and the first air hole are positioned close to the needle tip; The liquid outlet and the second air hole are positioned away from the needle tip.

4. The pressure-balancing side-hole needle according to claim 3, characterized in that, The liquid outlet is located at the end of the needle shaft opposite to the needle tip.

5. The side-hole needle capable of balancing air pressure according to claim 4, characterized in that, The needle bar includes the bottle exterior, the bottle interior, and a transition section; The outer part of the bottle, the transition section, and the inner part of the bottle are connected in sequence, and the end of the inner part of the bottle opposite to the transition section is connected to the needle tip; The liquid outlet is located on the outside of the bottle at one end away from the transition section; The second vent is located on the outside of the bottle; When the needle bar is inserted into the vial, the outside of the vial is located outside the vial, the inside of the vial is located inside the vial, part of the transition portion is located outside the vial, and another part of the transition portion is located inside the vial.

6. The side-hole needle capable of balancing air pressure according to claim 5, characterized in that, The transition portion is provided with a protrusion, which is used to abut against the bottle mouth.

7. The pressure-balancing side-hole needle according to claim 6, characterized in that, The distance from the protrusion to the end of the needle tip away from the needle shaft is less than or equal to the height of the vial.

8. The pressure-balancing side-hole needle according to claim 7, characterized in that, The distance from the protrusion to the end of the needle tip away from the needle rod is greater than or equal to 0.5 cm, and the distance from the protrusion to the end of the needle tip away from the needle rod is less than or equal to 1 cm.

9. The pressure-balancing side-hole needle according to claim 4, characterized in that, The pressure-balancing side-hole needle includes a needle plug, which is disposed at the end of the needle shaft away from the needle tip. The needle plug has an installation channel that communicates with the liquid outlet. The needle plug is used to install the pressure-balancing side-hole needle to the syringe nipple.

10. The pressure-balancing side-hole needle according to claim 1, characterized in that, The waterproof and breathable membrane is an expanded polytetrafluoroethylene membrane or a polyurethane membrane.

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