CN221286319U - Puncture needle, puncture device and liquid outlet device for liquid bottle - Google Patents

Abstract

The application relates to the technical field of infusion apparatuses, and discloses a puncture needle for a liquid bottle, which comprises an outer layer needle, a plugging piece and an inner tube, wherein the outer layer needle is sequentially provided with a liquid inlet and a gas outlet from the tail end to the tip end; the plugging piece is arranged in the outer layer needle and is positioned between the liquid inlet and the air outlet along the extending direction of the outer layer needle; the inner tube is arranged in the outer layer needle, the first end of the inner tube penetrates through the blocking piece, an air supply channel communicated with the air outlet is defined in the inner tube, and a liquid feeding channel communicated with the liquid inlet is defined between the outer wall of the inner tube and the inner wall of the outer layer needle. The puncture needle disclosed by the application can reduce the phenomenon that air enters a liquid channel of the puncture outfit. The application also discloses a puncture outfit and a liquid outlet device for the liquid bottle.

Description

Puncture needle, puncture device and liquid outlet device for liquid bottle

Technical Field

The application relates to the technical field of infusion apparatuses, in particular to a puncture needle, a puncture device and a liquid outlet device for a liquid bottle.

Background

When the puncture outfit with the double channels is used, the puncture outfit needs to be penetrated into the air inlet needle head and the liquid feeding needle head respectively, and the operation is complex and the use is inconvenient.

In order to reduce the puncture frequency of the puncture outfit, a single steel needle double-channel puncture outfit is disclosed in the related art, and comprises an outer needle, an inner needle, an upper needle seat, a needle seat, an air filter cover and an air plug, wherein the lateral wall of the outer needle is provided with a liquid inlet, the air filter cover and the air plug are arranged at the lateral direction of the needle seat, the needle point of the outer needle is in an open shape, an inward concave arc-shaped inclined plane is arranged at the bottom of the needle point, and the bottom of the needle point is a blunt opening. The inner needle is communicated with the air inlet channel of the needle seat, and the interlayer between the outer needle and the inner needle is communicated with the liquid inlet channel of the needle seat. The liquid channel and the gas channel which are communicated with the inside of the liquid bottle can be formed by one-time puncture in the form of nesting of the outer needle and the inner needle.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

Under the condition of high air inlet pressure, a part of air flowing through the inner needle can enter the liquid medicine from the gap between the inner needle and the outer needle, so that the use of a user is affected.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of utility model

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a puncture needle, a puncture outfit and a liquid outlet device for a liquid bottle, so as to reduce the phenomenon that air enters a liquid channel of the puncture outfit.

In some embodiments, the puncture needle for the liquid bottle comprises an outer layer needle, a blocking piece and an inner tube, wherein the outer layer needle is sequentially provided with a liquid inlet and a gas outlet from the tail end to the tip end; the plugging piece is arranged in the outer layer needle and is positioned between the liquid inlet and the air outlet along the extending direction of the outer layer needle; the inner tube is arranged in the outer layer needle, the first end of the inner tube penetrates through the blocking piece, an air supply channel communicated with the air outlet is defined in the inner tube, and a liquid feeding channel communicated with the liquid inlet is defined between the outer wall of the inner tube and the inner wall of the outer layer needle.

In some embodiments, the inner tube is an inner layer needle, and the first end of the inner tube is a tip of the inner layer needle.

In some embodiments, the second end of the inner tube passes out of the trailing end of the outer layer needle.

In some embodiments, the air outlet is open at a sidewall of the outer needle.

In some embodiments, the air outlet is open at the tip of the outer needle.

In some embodiments, the air outlet extends beyond the first end of the inner tube in a direction in which the outer needle extends.

In some embodiments, the outer layer needle is provided with a plurality of liquid inlets along the circumferential direction.

In some embodiments, the outer layer needle is circumferentially provided with a plurality of air outlets.

In some embodiments, the outer layer needle is provided with a glue injection hole, and the glue injection hole is located between the liquid inlet and the air outlet.

In some embodiments, the puncture outfit comprises the puncture needle and the needle seat, wherein the needle seat is provided with an outer needle fixing groove, the tail end of the outer needle is embedded into the outer needle fixing groove, and the second end of the inner tube penetrates out of the outer needle fixing groove.

In some embodiments, the hub is further provided with an inner tube securing slot through which the second end of the inner tube passes.

In some embodiments, the tail end of the outer layer needle is provided with a liquid outlet, and the needle seat is provided with a connecting channel which is communicated with the liquid outlet of the outer layer needle.

In some embodiments, the outer layer needle is adhesively sealed to the outer layer needle retaining groove.

In some embodiments, the inner tube is adhesively sealed to the inner tube securing groove.

In some embodiments, the liquid outlet device for the liquid bottle comprises the puncture outfit and the air pump, wherein the air delivery end of the air pump is communicated with the air supply channel of the inner tube.

In some embodiments, the liquid outlet device further comprises a nozzle, and a liquid inlet end of the nozzle is communicated with the liquid feeding channel.

The embodiment of the disclosure provides a pjncture needle, puncture ware, play liquid device for liquid bottle, can realize following technical effect:

the blocking piece is arranged to isolate the communication between the air inlet channel and the liquid feeding channel, and air entering the puncture outfit through the air inlet channel can only enter the liquid bottle through the air outlet of the outer layer needle, so that the barrier of the blocking piece can not be broken through to enter the liquid channel. Therefore, the phenomenon that air enters the liquid channel can be reduced, and the air and bubbles dissolved in the liquid medicine flowing out through the puncture outfit are reduced, so that the use of a user is facilitated.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

FIG. 1 is a schematic view of the structure of a puncture needle according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a puncture outfit according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of another embodiment of the present disclosure;

Fig. 4 is a schematic structural diagram of a liquid outlet device according to an embodiment of the disclosure.

Reference numerals:

10: a puncture needle; 100: an outer layer needle; 101: a liquid inlet; 102: an air outlet; 103: a liquid outlet; 200: a blocking member; 300: an inner tube; 400: a needle stand; 401: an outer layer needle fixing groove; 402: an inner tube fixing groove; 403: a connection channel; 510: an air pump; 520: a spray head.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged where appropriate. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

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

When the puncture outfit with the double channels is used, the puncture outfit needs to be penetrated into the air inlet needle head and the liquid feeding needle head respectively, and the operation is complex and the use is inconvenient. In order to reduce the puncture frequency of the puncture outfit, a single steel needle double-channel puncture outfit is disclosed in the related art, and comprises an outer needle, an inner needle, an upper needle seat, a needle seat, an air filter cover and an air plug, wherein the lateral wall of the outer needle is provided with a liquid inlet, the air filter cover and the air plug are arranged at the lateral direction of the needle seat, the needle point of the outer needle is in an open shape, an inward concave arc-shaped inclined plane is arranged at the bottom of the needle point, and the bottom of the needle point is a blunt opening. The inner needle is communicated with the air inlet channel of the needle seat, and the interlayer between the outer needle and the inner needle is communicated with the liquid inlet channel of the needle seat. The liquid channel and the gas channel which are communicated with the inside of the liquid bottle can be formed by one-time puncture in the form of nesting of the outer needle and the inner needle. The related art has a problem in that, in case of a large intake pressure, a part of air flowing through the inner needle may enter the medicine liquid from a gap between the inner needle and the outer needle, affecting the use of the user.

In order to alleviate the phenomenon that air enters the liquid channel of the puncture outfit, referring to fig. 1-4, an embodiment of the disclosure provides a puncture needle 10 for a liquid bottle, which comprises an outer layer needle 100, a blocking piece 200 and an inner tube 300, wherein the outer layer needle 100 is sequentially provided with a liquid inlet 101 and an air outlet 102 from the tail end to the tip end; the blocking piece 200 is arranged in the outer layer needle 100 and is positioned between the liquid inlet 101 and the air outlet 102 along the extending direction of the outer layer needle 100; the inner tube 300 is disposed in the outer needle 100, and the first end passes through the blocking member 200, the inner tube 300 defines an air supply channel communicating with the air outlet 102, and a liquid supply channel communicating with the liquid inlet 101 is defined between the outer wall of the inner tube 300 and the inner wall of the outer needle 100.

In the disclosed embodiment, the outer layer needle 100 has a hollow inner cavity, and the outer layer needle 100 has a tip end and a tail end at both ends, respectively. The tip of the outer needle 100 is used for puncturing the bottle stopper of the liquid bottle, and the tail end of the outer needle 100 is directly or indirectly communicated with other connecting pipelines.

The occluding member 200 is disposed within the outer layer needle 100 separating the hollow interior cavity of the outer layer needle 100 into a first portion near the tip and a second portion near the tail. The outer layer needle 100 is provided with a liquid inlet 101 and an air outlet 102, the liquid inlet 101 is communicated with the second part of the hollow inner cavity of the outer layer needle 100, and the air outlet 102 is communicated with the first part of the hollow inner cavity.

The inner tube 300 is disposed within the outer layer needle 100, i.e., the inner tube 300 and the outer layer needle 100 are in a nested form. The inner tube 300 extends through the occluding member 200 with a first end positioned within a first portion of the hollow interior of the outer layer needle 100 and a second end positioned within a second portion of the hollow interior or extending from the trailing end of the outer layer needle 100.

The inner tube 300 defines a gas supply passage therein. Air enters the air supply channel from the second end of the inner tube 300, then flows along the air supply channel to the first portion of the hollow interior cavity of the outer layer needle 100, and then flows out through the air outlet 102 opened at the outer layer needle 100.

A liquid feeding passage is defined between the outer wall of the inner tube 300 and the inner wall of the outer needle 100, and the liquid medicine enters the liquid feeding passage from the liquid inlet 101 of the outer needle 100 and is then discharged from the trailing end of the outer needle 100 along the liquid feeding passage.

As described in connection with fig. 2, the piercing needle 10 for a liquid bottle provided in the embodiment of the present disclosure is applied to an inverted liquid bottle, and the piercing needle 10 passes through a stopper of the liquid bottle from the bottom up. The liquid inlet 101 of the outer needle 100 is lower than the air outlet 102.

Under the condition that the air inlet channel is not communicated with an external air source, the liquid medicine in the liquid bottle enters the liquid inlet 101 under the action of gravity and flows out through the liquid feeding channel. With the outflow of the liquid medicine, a sub-atmospheric negative pressure environment is formed in the liquid bottle. Air enters the liquid bottle through the air supply channel by the pressure difference between the inside and outside of the liquid bottle and the air outlet 102, and is positioned at the upper part of the liquid bottle under the buoyancy effect. The liquid medicine in the liquid bottle continuously flows out and air is continuously supplemented, so that the liquid medicine is sent out.

Under the condition that the air inlet channel is communicated with an external air source, air enters the liquid bottle through the air inlet channel, so that the pressure in the bottle is increased. The liquid medicine in the liquid bottle enters the liquid inlet 101 under the action of air pressure and self gravity and flows out through the liquid feeding channel.

The blocking member 200 is disposed inside the outer needle 100 and outside the inner needle, and the liquid medicine entering the liquid feeding passage cannot enter the air feeding passage under the blocking of the blocking member 200, and the air entering the first cavity of the outer needle 100 from the air feeding passage cannot enter the liquid discharging passage under the blocking of the blocking member 200. Through the arrangement mode, the possibility that the liquid medicine enters the air supply channel or air enters the liquid supply channel can be reduced, and the safety of liquid medicine infusion is improved.

It should be noted that, in some cases, the functions of the liquid supply channel and the gas supply channel may be interchanged. That is, in the state of use of the puncture needle 10, air enters the liquid bottle from the liquid feeding passage, and the chemical liquid flows out through the air supply passage. Illustratively, as shown in connection with fig. 3, the liquid bottle mouth is up and the piercing needle 10 penetrates the liquid bottle from top to bottom. At this time, the liquid inlet 101 of the outer layer needle 100 is higher than the air outlet 102. To connect the lancet 10 to an external air source, air is pumped from the fluid supply channel of the lancet 10 into the fluid bottle, thereby increasing the pressure within the bottle. The pressure in the liquid bottle enters the air supply channel from the lower air outlet under the action of the internal and external pressure difference, and then flows out through the air supply channel. In this manner of use, the occluding component 200 may still isolate the fluid delivery passageway from the air supply passageway within the outer needle 100, thereby preventing air from entering the medical fluid.

By using the puncture needle 10 for a liquid bottle provided by the embodiment of the present disclosure, the outer layer needle 100 and the inner tube 300 are in a nested form, and two channels can be formed by one puncture, so that the puncture times are reduced; the sealing piece 200 can isolate the communication between the air inlet channel and the liquid feeding channel, and the air entering the puncture outfit through the air inlet channel can only enter the liquid bottle through the air outlet 102 of the outer layer needle 100, so that the air can not enter the liquid channel by breaking through the barrier of the sealing piece 200. Therefore, the phenomenon that air enters the liquid channel can be reduced, and the air and bubbles dissolved in the liquid medicine flowing out through the puncture outfit are reduced, so that the use of a user is facilitated.

Alternatively, the inner tube 300 is an inner needle and the first end of the inner tube 300 is the tip of the inner needle.

In manufacturing the needle 10, the tip of the inner needle may be used to pierce through the occluding member 200 such that the first end of the inner needle is positioned within a first portion of the hollow interior of the outer needle 100. With this arrangement, the puncture needle 10 can be easily formed.

Optionally, the outer layer needle 100 is provided with a glue injection hole, and the glue injection hole is located between the liquid inlet and the air outlet, and glue is injected through the glue injection hole to form the plugging piece 200.

The outer needle 100 has a smaller diameter and it is difficult to place the molded closure 200 inside the outer needle 100. The outer layer needle 100 is provided with a glue injection hole, which is beneficial to the processing and forming of the puncture needle 10. As one embodiment, when assembling the puncture needle 10, the inner tube 300 is inserted into the outer layer needle 100, and then fluid glue is injected through the glue injection hole. The glue has a certain fluidity, wets the inner wall of the outer needle 100 and the outer wall of the inner needle, and forms the closure 200 after solidification. As another embodiment, when the puncture needle 10 is assembled, fluid glue is injected through the glue injection hole, and the glue is solidified and is called as a closure member 200. After which the inner tube 300 is threaded and the inner tube 300 is threaded through the closure 200 to form the needle 10. With such an arrangement, the production and assembly of the lancet 10 is facilitated.

Optionally, the second end of the inner tube 300 is threaded out from the trailing end of the outer layer needle 100.

The second end of the inner tube 300, i.e. the tail end of the inner needle, is penetrated out from the tail end of the outer needle 100, which is beneficial to not only connecting the air supply channel of the inner tube 300 with the accessory arrangement such as the air pipe, but also isolating the air supply channel from the liquid discharge channel. In addition, in manufacturing the puncture needle 10, since the second end of the inner tube 300 is protruded outwardly beyond the rear end of the outer layer needle 100, the second end of the inner tube 300 serves as a clamping portion to facilitate manual or clamping of the inner tube 300, thereby penetrating the inner tube 300 into the outer layer needle 100. With such an arrangement, the production and assembly of the puncture needle 10 is facilitated.

Optionally, the air outlet 102 is provided in a side wall of the outer needle 100.

The air outlet 102 is formed on the side wall of the outer layer needle 100, and when the puncture needle 10 is used for penetrating through the bottle stopper, scraps are not easy to enter into the outer layer needle 100 through the air outlet 102. With such an arrangement, the air passage of the puncture needle 10 is advantageously kept open.

Optionally, the air outlet 102 opens at the tip of the outer needle 100.

The tip of the outer needle 100 has an inclined guide surface, and the air outlet 102 is opened to the guide surface of the tip of the outer needle 100. With the arrangement, dead angles can be avoided in the outer layer needle 100, and the outer layer needle 100 is beneficial to processing, forming and cleaning and flushing.

Alternatively, air outlet 102 extends beyond the first end of inner tube 300 in the direction in which outer needle 100 extends.

The air outlet 102 of the outer needle 100 is opened corresponding to the first part of the hollow cavity, and the air entering the first part of the hollow cavity of the outer needle 100 enters the liquid bottle through the air outlet 102 under the action of the internal and external pressure difference. The air outlet 102 is higher than the first end of the inner tube 300, and the air path is smooth when the air flows.

Optionally, the first end of the inner tube 300 exceeds the closure 200 by a predetermined distance.

During penetration using the needle 10, medical fluid may enter a first portion of the hollow interior of the outer layer needle 100 through the air outlet 102 of the outer layer needle 100. The first end of the inner tube 300 extends beyond the stopper 200 by a predetermined distance, and forms a region for temporarily storing the medical fluid in the first portion of the hollow body of the outer needle 100. The liquid medicine is not easy to enter the inner layer needle against the air supply channel. By adopting the arrangement mode, the possibility that the liquid medicine enters the inner layer needle can be reduced, and the air path cleanliness of the puncture needle 10 is improved.

Optionally, the outer layer needle 100 is provided with a plurality of liquid inlets 101 in the circumferential direction.

The outer layer needle 100 is provided with a plurality of liquid inlets 101 along the circumferential direction, which can increase the liquid inlet speed of the liquid feeding channel, thereby increasing the liquid outlet speed of the puncture needle 10. In addition, in the case that one of the liquid inlets 101 is blocked, the liquid medicine can be supplied to the liquid feeding channel through the other liquid inlets, so that the use reliability of the puncture needle 10 is improved.

Optionally, the outer needle 100 is provided with a plurality of air outlets 102 in the circumferential direction.

The outer layer needle 100 is provided with a plurality of air outlets 102 along the circumferential direction, which can increase the air flow rate of the air supply channel, thereby increasing the liquid outlet speed of the puncture needle 10.

Referring to fig. 1-4, an embodiment of the present disclosure provides a puncture outfit for a liquid bottle, the puncture outfit including the puncture needle 10 and the needle holder 400, wherein the needle holder 400 is provided with an outer needle fixing groove 401, the tail end of the outer needle 100 is inserted into the outer needle fixing groove 401, and the second end of the inner tube 300 is penetrated out of the outer needle fixing groove 401.

In the presently disclosed embodiment, the penetrator includes the above-described needle 10. The needle holder 400 is used to fix at least the outer layer needle 100 of the puncture needle 10. The needle holder 400 is provided with an outer needle fixing groove 401, and the tail end of the outer needle 100 is embedded into the needle holder 400 fixing groove. When the puncture outfit is used, the needle seat 400 is used as a holding part to facilitate the puncture outfit to penetrate the bottle stopper; during the puncturing process, the needle holder 400 also serves as a limiting portion to control the puncturing depth. The second end of the inner tube 300 extends beyond the trailing end of the outer needle 100 and out of the outer needle fixing groove 401, which may facilitate attachment of an accessory such as a trachea for the inner tube 300.

Optionally, the hub 400 is further provided with an inner tube fixing groove 402, and the second end of the inner tube 300 passes through the inner tube fixing groove 402.

The needle stand 400 is provided with an inner tube fixing groove 402, the inner tube fixing groove 402 is arranged at the bottom end of the outer layer needle fixing groove 401, and the extending direction is the same as the direction of the outer layer needle fixing groove 401. The needle holder 400 may fix the outer needle 100 and the inner tube 300 at the same time, so that the outer needle 100 and the inner tube 300 may be maintained at a preset relative position. The second end of the inner tube 300 passes through the inner tube fixing groove 402, that is, the second end of the inner tube 300 is protruded downwardly beyond the needle holder 400 in the state of use of the puncture instrument. This further facilitates the connection of the air tube to the inner tube 300.

Optionally, the tail end of the outer layer needle 100 is provided with a liquid outlet 103, and the needle seat 400 is provided with a connecting channel 403, and the connecting channel 403 is communicated with the liquid outlet 103 of the outer layer needle 100.

The needle holder 400 is configured with a communication passage, and the chemical solution introduced into the liquid feeding passage is guided out through the connection passage 403. As an embodiment, the connecting channel 403 extends laterally with the outer needle 100 disposed vertically. This facilitates separation of the air supply channel and the connecting channel 403 of the inner needle. The needle stand 400 is provided with a connecting channel 403, and the infusion tube connected to the medicine application position can be communicated with the liquid feeding channel of the puncture outfit only by being connected with the connecting channel 403, thereby being convenient for the use of the puncture outfit.

Optionally, outer needle 100 is adhesively sealed to outer needle attachment groove 401.

With such arrangement, the fixing effect between the outer needle 100 and the needle holder 400 can be improved, and the sealing effect between the outer needle 100 and the outer needle fixing groove 401 can be improved.

Optionally, the inner tube 300 is adhesively sealed with the inner tube securing groove 402.

With such arrangement, the fixing effect between the inner tube 300 and the needle holder 400 can be improved on the one hand, and the sealing effect between the inner tube 300 and the inner tube fixing groove 402 can be improved on the other hand.

Referring to fig. 1-4, an embodiment of the disclosure provides a liquid outlet device for a liquid bottle, which includes the puncture outfit and the air pump 510, wherein the air delivery end of the air pump 510 is connected to the air supply channel of the inner tube 300.

In an embodiment of the disclosure, the liquid outlet device is used for discharging the liquid medicine in the liquid bottle. Specifically, the liquid outlet device includes the puncture outfit and the air pump 510, and the air delivery end of the air pump 510 is directly or indirectly connected to the air supply channel of the inner tube 300.

As a way of use, the spike 10 of the spike passes through the stopper of the liquid bottle. The air pump 510 is connected to the second end of the air supply channel, and the air pump 510 pumps air into the liquid bottle through the air supply channel when in operation. The pressure in the liquid bottle rises, the liquid medicine in the bottle enters the liquid feeding channel through the liquid inlet 101 of the outer layer needle 100 under the action of the pressure, and the liquid medicine flows out through the liquid feeding channel.

By using the liquid outlet device provided by the embodiment of the disclosure, the puncture needle 10 of the puncture outfit is in a nested form, and two channels can be formed through one puncture, so that the puncture times are reduced; the blocking member 200 is provided to isolate the communication between the air inlet passage and the liquid feeding passage, and air entering the puncture outfit through the air inlet passage can only enter the liquid bottle through the air outlet 102 of the outer needle 100, and cannot enter the liquid passage through the barrier of the blocking member 200. Therefore, the phenomenon that air enters the liquid channel can be reduced, and the air and bubbles dissolved in the liquid medicine flowing out through the puncture outfit are reduced, so that the use of a user is facilitated. The air pump 510 can be arranged to increase the pressure in the liquid bottle so as to enable the liquid medicine to flow out, and the liquid outlet speed can be controlled due to the fact that the liquid outlet pressure is large.

Optionally, the liquid outlet device further includes a nozzle 520, and a liquid inlet end of the nozzle 520 is communicated with the liquid feeding channel.

The spray head 520 has a plurality of small holes, and the liquid medicine sprayed from the spray head 520 is atomized into small liquid drops under the acceleration of the throttling of the small holes, so that the liquid medicine is sprayed to the medicine application position. Under the condition that the liquid medicine in the liquid bottle is a sterilizing medicine, the liquid outlet device can be used for conveniently sterilizing the environment. When the medicine in the liquid bottle is atomized therapeutic medicine, the liquid medicine in the liquid bottle can be called atomized liquid drops through the liquid outlet device, so that the atomized therapeutic effect is realized. The liquid outlet flow rate of the liquid outlet device can be conveniently adjusted by adjusting the air outlet pressure of the air pump 510, so that the use is convenient for users.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (13)

1. A lancet for a fluid vial, comprising:

an outer layer needle is provided with a liquid inlet and an air outlet from the tail end to the tip end in sequence;

The blocking piece is arranged in the outer layer needle and is positioned between the liquid inlet and the air outlet along the extending direction of the outer layer needle;

The inner tube is arranged in the outer layer needle, the first end of the inner tube penetrates through the plugging piece, an air supply channel communicated with the air outlet is defined in the inner tube, and a liquid feeding channel communicated with the liquid inlet is defined between the outer wall of the inner tube and the inner wall of the outer layer needle.

2. A puncture needle according to claim 1, characterized in that,

The inner tube is an inner layer needle, and the first end of the inner tube is the tip of the inner layer needle.

3. A lancet according to claim 1 or 2, wherein,

The second end of the inner tube passes out from the tail end of the outer layer needle.

4. A lancet according to claim 1 or 2, wherein,

The air outlet is formed in the side wall of the outer layer needle; and/or the number of the groups of groups,

The air outlet is arranged at the tip end of the outer layer needle.

5. A lancet according to claim 1 or 2, wherein,

The air outlet extends beyond the first end of the inner tube in the direction in which the outer needle extends.

6. A lancet according to claim 1 or 2, wherein,

The outer layer needle is provided with a plurality of liquid inlets along the circumferential direction; and/or the number of the groups of groups,

The outer layer needle is provided with a plurality of air outlets along the circumferential direction.

7. A lancet according to claim 1 or 2, wherein,

The outer layer needle is provided with a glue injection hole, and the glue injection hole is positioned between the liquid inlet and the air outlet.

8. A puncture outfit, comprising:

the puncture needle according to any one of claims 1 to 7; and, a step of, in the first embodiment,

The needle stand is provided with an outer needle fixing groove, the tail end of the outer needle is embedded into the outer needle fixing groove, and the second end of the inner tube penetrates out of the outer needle fixing groove.

9. The puncture device according to claim 8, wherein,

The needle seat is also provided with an inner tube fixing groove, and the second end of the inner tube penetrates through the inner tube fixing groove.

10. The puncture device according to claim 9, wherein,

The tail end of the outer layer needle is provided with a liquid outlet, the needle seat is provided with a connecting channel, and the connecting channel is communicated with the liquid outlet of the outer layer needle.

11. The puncture device according to claim 9, wherein,

The outer layer needle is sealed with the outer layer needle fixing groove by adhesive; and/or the number of the groups of groups,

The inner tube is sealed with the inner tube fixing groove by adhesive.

12. A tapping device for a liquid bottle, comprising:

the puncture instrument according to any one of claims 8 to 11; and, a step of, in the first embodiment,

The air pump, the air supply end is connected with the air supply channel of the inner tube.

13. The tapping device according to claim 12, further comprising:

The liquid inlet end of the spray head is communicated with the liquid feeding channel.