CN110897884A

CN110897884A - Liquid medicine transfer device

Info

Publication number: CN110897884A
Application number: CN201911333012.5A
Authority: CN
Inventors: 李思进; 刘海燕
Original assignee: Shanxi Medical University
Current assignee: Shanxi Medical University
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-03-24
Anticipated expiration: 2039-12-20
Also published as: CN110897884B

Abstract

The application provides a liquid medicine transfer device, belongs to liquid medicine transfer technical field. The liquid medicine transfer device comprises a base, a puncture needle and a one-way valve. The base is used for butting with a penicillin bottle. The puncture needle is connected with the base and is provided with an air inlet, a liquid pumping port and an outlet, the air inlet is communicated with the outlet to form a first flow passage, and the liquid pumping port is communicated with the outlet to form a second flow passage; when the puncture needle is inserted into the penicillin bottle, the outlet is positioned in the penicillin bottle, and the air inlet and the liquid extraction port are both positioned outside the penicillin bottle. The check valve is located in the first flow passage and is used for preventing liquid in the penicillin bottle from flowing from the outlet to the air inlet and allowing air to flow from the air inlet to the outlet. In the process of extracting the liquid medicine in the penicillin bottle, the one-way valve is in an open state, and along with the extraction of the liquid medicine in the penicillin bottle, external air enters the penicillin bottle through the first flow channel to balance the pressure in the penicillin bottle, so that the liquid medicine in the penicillin bottle is easier to extract.

Description

Liquid medicine transfer device

Technical Field

The application relates to the technical field of liquid medicine transfer, in particular to a liquid medicine transfer device.

Background

When the medicine powder in the penicillin bottle is taken out, the reagent is firstly injected into the penicillin bottle through the syringe, the medicine powder and the reagent are fully mixed, and then the medicine liquid in the penicillin bottle is extracted through the syringe. When the liquid medicine in the penicillin bottle is extracted, the penicillin bottle is gradually in a negative pressure state, so that the liquid medicine is difficult to extract.

Disclosure of Invention

The embodiment of the application provides a liquid medicine transfer device to improve the problem of liquid medicine difficulty in extracting xiLin bottles.

The embodiment of the application provides a liquid medicine transfer device, including base, pjncture needle and check valve:

the base is used for being in butt joint with a penicillin bottle;

the puncture needle is connected with the base and is provided with an air inlet, a liquid pumping port and an outlet, the air inlet is communicated with the outlet to form a first flow channel, and the liquid pumping port is communicated with the outlet to form a second flow channel; when the puncture needle is inserted into the penicillin bottle, the outlet is positioned in the penicillin bottle, and the air inlet and the liquid extraction port are both positioned outside the penicillin bottle;

the check valve is located in the first flow channel and is used for preventing liquid in a penicillin bottle from flowing from the outlet to the air inlet and allowing gas to flow from the air inlet to the outlet.

Among the above-mentioned technical scheme, when the in-service use, base and xiLin bottle butt joint, and the pjncture needle pierces the rubber buffer of xiLin bottle bottleneck and gets into xiLin bottle for air inlet and drawing liquid mouth are located xiLin bottle outside, and the export is located xiLin bottle. In this case, when the reagent needs to be injected into the vial, the needle of the syringe is inserted into the liquid extraction port, and the piston rod of the syringe is pushed, so that the reagent in the syringe enters the vial from the outlet through the second flow channel. Because the base is in butt joint with the penicillin bottle, after the syringe needle is pulled out, the penicillin bottle and the base can be shaken together, so that the reagent and the medicinal powder in the penicillin bottle are fully mixed to form a liquid medicine. In this case, when the liquid medicine in the penicillin bottle needs to be extracted, the needle head of the syringe can be inserted into the liquid extraction port again, and the piston rod of the syringe is pulled, so that the liquid medicine in the penicillin bottle enters the syringe. In the process of injecting reagent into the west forest bottle, the check valve is in the closed state, and reagent can not flow out from the air inlet, avoids the waste of reagent. In the process of extracting the liquid medicine in the penicillin bottle, the one-way valve is in an open state, and along with the extraction of the liquid medicine in the penicillin bottle, external air enters the penicillin bottle through the first flow channel to balance the pressure in the penicillin bottle, so that the liquid medicine in the penicillin bottle is easier to extract.

In addition, the chemical liquid transfer device according to the embodiment of the present application has the following additional technical features:

in some embodiments of the present application, the needle tip of the needle is blind and the outlet is disposed in the circumferential wall of the needle.

According to the technical scheme, the needle tip of the puncture needle is a blind end, the outlet is formed in the peripheral wall of the puncture needle, and the structure can effectively prevent rubber particles from entering the puncture needle to cause blockage when the needle tip of the puncture needle punctures the rubber plug at the bottle opening of the penicillin bottle.

In some embodiments of the present application, the first flow path comprises a first channel and a second channel in communication at the needle tip and arranged in the direction of extension of the puncture needle;

the first channel is parallel to the second channel, the air inlet is communicated with the first channel, the outlet is communicated with the second channel, and the one-way valve is arranged in the second channel.

Among the above-mentioned technical scheme, first passageway and second passageway are in the most advanced intercommunication of needle, and first passageway and second passageway are parallel and all arrange along the extending direction of pjncture needle, provide good structural basis for the setting of check valve. The one-way valve is arranged in the second channel, so that the residual quantity of the liquid medicine in the puncture needle is reduced.

In some embodiments of the present application, the introducer needle includes a needle body and a first separator;

the first separating body is fixed in the needle body, and the first channel and the second channel are respectively positioned at two sides of the first separating body.

Among the above-mentioned technical scheme, pjncture needle includes needle body and first separator, and first passageway and second passageway are located the both sides of first separator respectively, have simplified the inner structure of pjncture needle, are convenient for make by shaping.

In some embodiments of the present application, the needle further comprises a second separator connected between the first separator and an inner wall of the needle;

the second separator separates the first flow passage from the second flow passage;

the outlet includes a first outlet in communication with the first flow passage and a second outlet in communication with the second flow passage.

In the above technical solution, the first flow channel and the second flow channel are separated by the second separator, that is, the first flow channel and the second flow channel are both separate flow channels. First export and first flow channel intercommunication, second export and second flow channel intercommunication, when the liquid medicine in the extraction xiLin bottle, external air will get into xiLin bottle from first export, and the liquid medicine will flow out xiLin bottle from the second export, has reduced the interference between the gas in the first flow channel and the liquid in the second flow channel for liquid medicine in the xiLin bottle can enter into to the second flow channel more fast.

In some embodiments of the present application, the first outlet and the second outlet are spaced apart in a circumferential direction of the needle body;

the first outlet and the second outlet are arranged at intervals in the axial direction of the needle body.

In the technical scheme, the first outlet and the second outlet are arranged at intervals in the circumferential direction of the needle body and in the axial direction of the needle body, so that the interference between the gas in the first flow channel and the liquid in the second flow channel is further reduced.

In some embodiments of the present application, the one-way valve is proximate to the outlet.

Among the above-mentioned technical scheme, the check valve is close to the export for the region between export and check valve is less in first runner, has reduced the liquid medicine volume that gets into in the first runner.

In some embodiments of the present application, the one-way valve is a float one-way valve.

In the technical scheme, the penicillin bottle is in an inverted state in the process of injecting the reagent into the west forest bottle, when the liquid level of the reagent entering the penicillin bottle is lower than a floating ball of a floating ball one-way valve, air in the penicillin bottle can be discharged from an air inlet through the floating ball one-way valve, and in the process, the pressure inside and outside the bottle is in a balanced state; along with the liquid level in the penicillin bottle rises gradually, the ball float valve rises under the action of buoyancy, and finally the one-way valve is closed to prevent the liquid in the penicillin bottle from flowing out of the air inlet.

In some embodiments of the present application, the base is provided with an air inlet hole penetrating through a peripheral wall thereof, and the air inlet hole is communicated with the air inlet hole;

the liquid medicine transfer device further comprises a rubber ring, the rubber ring is sleeved on the outer side of the base, and the rubber ring is used for blocking one end of the air inlet hole penetrating through the peripheral wall of the base.

Among the above-mentioned technical scheme, when need not to use liquid medicine transfer device, accessible rubber ring is with the inlet port shutoff, avoids in external gas or the liquid enters into first flow channel, prevents that the pjncture needle is inside to be polluted.

In some embodiments of the present application, the medical fluid transfer device further comprises a rubber stopper and a shutter cap;

the rubber plug is plugged in the liquid extraction port, and the shielding cover is in threaded connection with the base so as to limit the rubber plug between the shielding cover and the base;

the blocking cover is provided with a hole for a needle of an injector to pierce the rubber plug and enter the second flow channel from the liquid extraction port.

Among the above-mentioned technical scheme, shelter from the effect of lid and be firm in drawing liquid mouth department with the rubber buffer to with drawing liquid mouth shutoff. When reagent needs to be injected into the penicillin bottle or liquid medicine in the penicillin bottle needs to be pumped out, the needle head of the injector pierces the rubber plug from the position of the pore passage of the shielding cover to enter the second flow passage.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a liquid medicine transfer device according to an embodiment of the present application;

FIG. 2 is a schematic view of the medical fluid transfer device shown in FIG. 1;

FIG. 3 is a schematic view of a check valve according to another embodiment of the present disclosure;

FIG. 4 is a schematic view of a medical fluid transfer device according to some embodiments of the present application, shown from a first perspective;

FIG. 5 is a schematic view of a medical fluid transfer device according to some embodiments of the present application, shown from a second perspective;

fig. 6 is a schematic view of the structure of the puncture needle shown in fig. 4.

Icon: 100-a liquid medicine transfer device; 10-a base; 11-a docking hole; 12-positioning holes; 13-mounting holes; 14-an air intake; 15-an annular groove; 20-puncture needle; 21-an air inlet; 22-a liquid extraction port; 23-an outlet; 231 — a first outlet; 232-a second outlet; 24-a first flow channel; 241-a first channel; 242 — a second channel; 243-communication port; 25-a second flow channel; 26-a needle body; 27-a first separator; 271-a first connection plate; 272-a second connecting plate; 28-a second separator; 30-a one-way valve; 31-a valve body; 32-sphere; 33-a spring; 40-rubber plug; 50-a shutter cover; 51-a pore channel; 60-a rubber ring; 200-penicillin bottles.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first" and "second" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Examples

The embodiment of the application provides a liquid medicine transfer device 100, which can transfer liquid medicine in a penicillin bottle 200 into a syringe, and after the liquid medicine transfer device 100 is connected between the syringe and the penicillin bottle 200, the liquid medicine in the penicillin bottle 200 can be easily drawn out through the syringe. The structure of the medical fluid transfer device 100 will be described in detail below with reference to fig. 1 to 5.

Fig. 1 is a schematic structural diagram of a medical fluid transfer device 100 according to an embodiment of the present application; FIG. 2 is a schematic diagram of the medical fluid transfer device 100 shown in FIG. 1; FIG. 3 is a schematic structural view of a check valve 30 according to another embodiment of the present application; FIG. 4 is a schematic view of the medical fluid transfer device 100 according to some embodiments of the present application, shown from a first perspective; FIG. 5 is a schematic view of the medical fluid transfer device 100 according to some embodiments of the present application, shown in a second view; fig. 6 is a schematic view of the structure of the puncture needle 20 shown in fig. 4.

As shown in FIG. 1, the medical fluid transfer device 100 comprises a base 10, a puncture needle 20, and a check valve 30. Base 10 is adapted to interface with vial 200. The puncture needle 20 is connected with the base 10, the puncture needle 20 is provided with an air inlet 21, a liquid extracting port 22 and an outlet 23, the air inlet 21 is communicated with the outlet 23 to form a first flow passage 24, and the liquid extracting port 22 is communicated with the outlet 23 to form a second flow passage 25; when the puncture needle 20 is inserted into the penicillin bottle 200, the outlet 23 is positioned inside the penicillin bottle 200, and the air inlet 21 and the liquid extraction port 22 are both positioned outside the penicillin bottle 200. A one-way valve 30 is located in the first flow passage 24, and the one-way valve 30 is used for preventing the liquid in the penicillin bottle 200 from flowing from the outlet 23 to the air inlet 21 and allowing the gas to flow from the air inlet 21 to the outlet 23.

In actual use, as shown in fig. 2, the penicillin bottle 200 is in an inverted state, the base 10 is abutted with the penicillin bottle 200, and the puncture needle 20 punctures the rubber plug 40 at the opening of the penicillin bottle 200 and enters the penicillin bottle 200, so that the air inlet 21 and the liquid extraction port 22 are located outside the penicillin bottle 200, and the outlet 23 is located inside the penicillin bottle 200. In this case, when it is necessary to inject the reagent into the vial 200, the needle of the syringe is inserted into the drawing port 22, and the piston rod of the syringe is pushed, so that the reagent in the syringe enters the vial 200 from the outlet 23 through the second flow channel 25. Because the base 10 is in butt joint with the penicillin bottle 200, after the syringe needle is pulled out, the penicillin bottle 200 and the base 10 can be shaken together, so that the reagent and the medicinal powder in the penicillin bottle 200 are fully mixed to form a liquid medicine. In this case, when the liquid medicine in the vial 200 needs to be extracted, the needle of the syringe is inserted into the liquid extraction port 22 again, and the piston rod of the syringe is pulled to introduce the liquid medicine in the vial 200 into the syringe. In the process of injecting the reagent into the west forest bottle 200, the one-way valve 30 is in a closed state, and the reagent does not flow out from the air inlet 21, so that the waste of the reagent is avoided. In the process of extracting the liquid medicine in the penicillin bottle 200, the check valve 30 is in the open state, and along with the extraction of the liquid medicine in the penicillin bottle 200, the external air enters the penicillin bottle 200 through the first flow channel 24 to balance the pressure in the penicillin bottle 200, so that the liquid medicine in the penicillin bottle 200 can be extracted more easily.

Wherein, the base 10 is used for docking with the penicillin bottle 200, and the base 10 can be in various structures. Illustratively, with continued reference to fig. 1, the base 10 is a cylindrical structure, one axial end of the base 10 is provided with a docking hole 11, and a positioning hole 12 is provided on a bottom wall of the docking hole 11 and is coaxial with the docking hole 11.

One end of the puncture needle 20 far away from the needle tip is inserted into the positioning hole 12 of the base 10 to realize the connection of the puncture needle 20 and the base 10. The needle tip of the puncture needle 20 penetrates out of the docking hole 11 and is positioned outside the base 10. It should be noted that the puncture needle 20 and the base 10 can be fixed together in various ways, such as the puncture needle 20 and the base 10 are fixed together by adhesion, and the puncture needle 20 and the positioning hole 12 are fixed together by interference fit.

With continued reference to fig. 2, when the base 10 is butted with the vial 200, the needle tip of the puncture needle 20 pierces the rubber plug 40 at the mouth of the vial 200 and enters the vial 200, the mouth end of the vial 200 is inserted into the butting hole 11 of the base 10, and the vial 200 and the base 10 form a relatively tight fit.

In this embodiment, with reference to fig. 1, the tip of the puncture needle 20 is a blind end, and the outlet 23 is disposed on the peripheral wall of the puncture needle 20, which can effectively prevent rubber particles from entering the puncture needle 20 to cause blockage when the tip of the puncture needle 20 punctures the rubber stopper 40 at the opening of the vial 200.

The outlet 23 is located in the docking hole 11 of the base 10, and the outlet 23 is spaced from the bottom wall of the docking hole 11.

In this embodiment, the first flow channel 24 and the second flow channel 25 share the same outlet 23, that is, when the liquid medicine in the vial 200 is extracted, the external air enters the vial 200 from the outlet 23 through the first flow channel 24, and the liquid medicine in the vial 200 simultaneously flows into the second flow channel 25 from the outlet 23.

The inlet port 21 is also provided in the peripheral wall of the puncture needle 20, and the inlet port 21 is located farther from the needlepoint of the puncture needle 20 than the outlet port 23 in the axial direction of the puncture needle 20.

Further, the first flow path 24 includes a first path 241 and a second path 242, the first path 241 communicates with the second path 242 at the needle tip of the puncture needle 20, the first path 241 and the second path 242 are both arranged along the extending direction of the puncture needle 20, the first path 241 is disposed in parallel with the second path 242, the air inlet 21 communicates with the first path 241, the outlet 23 communicates with the second path 242, and the check valve 30 is disposed in the second path 242.

The above structure in which the first channel 241 communicates with the second channel 242 at the needle tip and the first channel 241 and the second channel 242 are parallel and are arranged in the extending direction of the puncture needle 20 provides a good structural basis for the provision of the check valve 30. The check valve 30 is disposed in the second passage 242 to reduce the amount of residual medical fluid in the puncture needle 20.

Optionally, the needle 20 includes a needle body 26 and a first separator 27. The first separator 27 is fixed in the needle body 26, and the first channel 241 and the second channel 242 are respectively located at both sides of the first separator 27. This simplifies the internal structure of the needle 20 and facilitates manufacturing.

The needle body 26 is hollow cylindrical, and the tip of the needle body 26 is the needle tip of the puncture needle 20. It will be appreciated that the air inlet 21 and outlet 23 are both provided in the peripheral wall of the needle body 26 and the drawing port 22 is provided at the end of the needle body 26 remote from the tip.

The first separator 27 has an L-shaped structure including a first connecting plate 271 and a second connecting plate 272, the first connecting plate 271 being connected to the inner wall of the needle body 26, the first connecting plate 271 being arranged along the extending direction of the needle body 26; the second connecting plate 272 is connected to the inner wall of the needle body 26 and is connected to one end of the first connecting plate 271, the second connecting plate 272 is perpendicular to the first connecting plate 271, and the second connecting plate 272 is farther from the needle tip of the puncture needle 20 than the air inlet 21. An end of the first connecting plate 271 remote from the second connecting plate 272 and the inner wall of the needle tip of the puncture needle 20 form a communication port 243 for communicating the first channel 241 and the second channel 242.

It should be noted that, in other embodiments, the puncture needle 20 may have other structures, for example, the puncture needle 20 is a solid cylinder structure as a whole, two holes are opened in the puncture needle 20, and the two holes converge at the outlet 23, and the two holes are the first flow channel 24 and the second flow channel 25, respectively.

Further, the one-way valve 30 is located close to the outlet 23, and this structure makes the area of the first flow path 24 between the outlet 23 and the one-way valve 30 smaller, thereby reducing the amount of the liquid medicine entering the first flow path 24.

The one-way valve 30 may be of various configurations. Illustratively, the check valve 30 is a float check valve 30.

In the process of injecting the reagent into the Xilin bottle 200, the Xilin bottle 200 is in an inverted state, a floating ball of the floating ball one-way valve 30 opens the floating ball one-way valve 30 under the action of gravity, when the liquid level of the reagent entering the Xilin bottle 200 is lower than the floating ball of the floating ball one-way valve 30, the air in the Xilin bottle 200 can be discharged from the air inlet 21 through the floating ball one-way valve 30, and in the process, the pressure inside and outside the bottle is in a balanced state; as the liquid level in the penicillin bottle 200 gradually rises, the ball float valve rises under the action of the buoyancy force, and finally the one-way valve 30 is closed to prevent the liquid in the penicillin bottle 200 from flowing out of the air inlet 21.

In other embodiments, the check valve 30 may be constructed, for example, as shown in fig. 3, the check valve 30 includes a valve body 31, a ball 32, and a spring 33. The hole wall of the central hole in the valve body 31 has a conical surface, the ball 32 and the spring 33 are both arranged in the valve body 31, the ball 32 is contacted with the conical surface under the action of the spring 33, and the check valve 30 is in a closed state. In the process of extracting the liquid medicine in the penicillin bottle 200, under the action of the gas, the ball 32 compresses the spring 33, and the ball 32 is separated from the conical surface, so that the check valve 30 is opened, and the external gas can enter the penicillin bottle 200.

Further, as shown in FIG. 1, the liquid medicine transferring device 100 further comprises a rubber stopper 40 and a shutter cap 50. The rubber plug 40 is blocked at the liquid extraction port 22, and the shielding cover 50 is screwed on the base 10 to limit the rubber plug 40 between the shielding cover 50 and the base 10; the cover 50 is provided with a hole 51 through which the needle of the syringe can penetrate the rubber stopper 40 and enter the secondary flow passage 25 from the liquid extraction port 22.

The shielding cap 50 functions to secure the rubber stopper 40 at the access port 22 to block the access port 22. When a reagent needs to be injected into the vial 200 or a medical liquid in the vial 200 needs to be extracted, the needle of the syringe pierces the rubber plug 40 from the position of the hole 51 of the shielding cover 50 into the second flow channel 25.

Wherein, the one end that base 10 kept away from the butt joint trompil is equipped with mounting hole 13, and mounting hole 13 passes through locating hole 12 with butt joint hole 11 and communicates, and the aperture of mounting hole 13 and the aperture of butt joint hole 11 all are greater than the aperture of locating hole 12. The rubber plug 40 is placed in the mounting hole 13 and forms a relatively tight fit, one end of the puncture needle 20 away from the needle point is pressed against the rubber plug 40, and the shielding cover 50 limits the rubber plug 40 in the mounting hole 13.

The hole 51 is provided at the center of the cover 50, and the hole 51 is aligned with the liquid drawing port 22 and separated by the rubber stopper 40. An external thread is arranged on the base 10, and an internal thread matched with the external thread on the base 10 is arranged on the shielding cover 50. The internal thread of the shielding cover 50 is matched with the external thread on the base 10, and the structure can facilitate the detachment of the shielding cover 50 and the replacement of the rubber plug 40.

In other embodiments, the shielding cap 50 may not be provided, and the rubber plug 40 and the base 10 may be directly bonded together.

In addition, the base 10 is provided with an air inlet 14 penetrating through the peripheral wall thereof, the air inlet 14 is communicated with the air inlet 21, and the outside air can enter the first flow passage 24 through the air inlet 14.

Illustratively, the air intake holes 14 are arranged in a radial direction of the base 10.

Optionally, the medical fluid transferring device 100 further includes a rubber ring 60, the rubber ring 60 is sleeved outside the base 10, and the rubber ring 60 is used for blocking one end of the air inlet 14 penetrating through the peripheral wall of the base 10.

When the medical fluid transferring device 100 is not needed, the air inlet hole 14 can be blocked by the rubber ring 60, so that external air or liquid is prevented from entering the first flow passage 24, and the inside of the puncture needle 20 is prevented from being polluted.

Further, an annular groove 15 is formed on the peripheral wall of the base 10, and one end of the air inlet hole 14 away from the air inlet 21 is communicated with the annular groove 15. When the rubber ring 60 is clamped in the annular groove 15, the rubber ring 60 seals one end of the air inlet hole 14 far away from the air inlet 21.

In addition, in some embodiments of the present application, as shown in fig. 4 and 5, the needle 20 further includes a second separator 28 connected between the first separator 27 and the inner wall of the needle 20. The second separator 28 isolates the first flow passage 24 from the second flow passage 25. The outlet 23 includes a first outlet 231 and a second outlet 232, the first outlet 231 communicating with the first flow passage 24, and the second outlet 232 communicating with the second flow passage 25.

The first flow passage 24 and the second flow passage 25 are each a separate flow passage. First export 231 and first flow path 24 intercommunication, second export 232 and second flow path 25 intercommunication, when extracting the liquid medicine in xiLin bottle 200, external air will get into xiLin bottle 200 from first export 231, and the liquid medicine will flow out xiLin bottle 200 from second export 232, has reduced the interference between the gas in the first flow path 24 and the liquid in the second flow path 25 for the liquid medicine in xiLin bottle 200 can get into to the second flow path 25 more fast.

Further, as shown in fig. 6, the first outlet 231 and the second outlet 232 are arranged at intervals in the circumferential direction of the needle body 26. The first outlet 231 is spaced apart from the second outlet 232 in the axial direction of the needle 26. This configuration further reduces interference between the gas in the first flow channel 24 and the liquid in the second flow channel 25.

Wherein the first outlet 231 is closer to the needle tip of the puncture needle 20 than the second outlet 232 is in the axial direction of the needle body 26.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A medical fluid transfer device, comprising:

a base for docking with a vial;

the puncture needle is connected to the base and provided with an air inlet, a liquid pumping port and an outlet, the air inlet is communicated with the outlet to form a first flow channel, and the liquid pumping port is communicated with the outlet to form a second flow channel; when the puncture needle is inserted into the penicillin bottle, the outlet is positioned in the penicillin bottle, and the air inlet and the liquid extraction port are both positioned outside the penicillin bottle; and

a one-way valve in the first flow passage for preventing liquid in a vial from flowing from the outlet to the inlet and allowing gas to flow from the inlet to the outlet.

2. The medical fluid transfer device according to claim 1, wherein the needle tip of said puncture needle is a blind end, and said outlet is provided on a peripheral wall of said puncture needle.

3. The medical liquid transfer device according to claim 2, wherein the first flow passage includes a first passage and a second passage communicating at the needle tip and arranged in the extending direction of the puncture needle;

4. The medical fluid transfer device according to claim 3, wherein said puncture needle comprises a needle body and a first separator;

5. The medical liquid transfer device according to claim 4, wherein said puncture needle further comprises a second partition body connected between said first partition body and an inner wall of said puncture needle;

6. The medical fluid transfer device according to claim 5, wherein the first outlet and the second outlet are arranged at a spacing in a circumferential direction of the needle body;

7. Medical liquid transfer device according to claim 1, wherein said one-way valve is close to said outlet.

8. The medical liquid transfer device according to claim 1, wherein the check valve is a float check valve.

9. The medical liquid transfer device according to claim 1, wherein said base is provided with an air inlet hole penetrating a peripheral wall thereof, said air inlet hole communicating with said air inlet hole;

10. The medical liquid transfer device according to claim 1, further comprising a rubber stopper and a shutter cap;