CN213284936U - Remaining needle - Google Patents

Abstract

The application relates to the field of medical instruments for infusion, in particular to an indwelling needle which comprises a needle tube component, an extension tube, an infusion component, a flow stopping clamp and a liquid bag tube; the needle tube assembly is connected with the infusion assembly through the extension tube; the extension tube is communicated with the liquid bag tube, the liquid bag tube is an elastic hollow part, and the volume of the liquid bag tube expands when liquid is filled in the liquid bag tube; the flow stopping clamp is arranged on the extension tube and is positioned on one side of the liquid bag tube close to the needle tube assembly. This application intercommunication has the expandable liquid bag pipe of elasticity on the extension pipe, and the expanded liquid bag pipe of liquid filling can contract gradually under the elastic action for liquid in the liquid bag pipe can press from both sides the small clearance of centre gripping through the stagnant flow and continuously carry out the malleation infusion to needle tubing assembly one side, has the effectual advantage that prevents to block up, and the condition of the stifled pipe of needle is kept somewhere to the significantly reduced, solves the poor technical problem of effect that exists to prevent to block up among the prior art effectively.

Description

Remaining needle

Technical Field

The application relates to the field of medical instruments for infusion, in particular to an indwelling needle.

Background

When the indwelling needle is not used for transfusion, blood of a patient easily flows back into the indwelling needle, so that the indwelling needle is easily blocked. In addition, blood remaining in the indwelling needle is easily coagulated, and thus the coagulated blood is easily introduced into a blood vessel to form a thrombus at the time of the next infusion, thereby harming the health of the human body. Keep somewhere needle at present generally all adopts the positive pressure to connect and produce an instantaneous positive pressure at the tube sealing in-process and reduce the condition of keeping somewhere needle stifled pipe, but can not continuously produce a positive pressure effect for keeping somewhere the needle, prevent that the effect of jam is poor, keep somewhere the needle and still can appear the condition of blockking up.

SUMMERY OF THE UTILITY MODEL

In view of this, an object of the present application is to provide an indwelling needle, wherein an elastically expandable sac tube is communicated with an extension tube, and the liquid-filled expandable sac tube gradually contracts under the action of elasticity, so that liquid in the sac tube can continuously perform positive pressure infusion on one side of a needle tube assembly through a small gap clamped by a flow stopping clip, and the indwelling needle has the advantage of good effect of preventing blockage, thereby greatly reducing the situation of blockage of the indwelling needle, and effectively solving the technical problem of poor effect of preventing blockage in the prior art.

In order to achieve the purpose, the application provides the following technical scheme:

an indwelling needle comprises a needle tube component, an extension tube, a transfusion component, a flow stopping clamp and a liquid bag tube; the needle tube assembly is connected with the infusion assembly through the extension tube; the extension tube is communicated with the liquid bag tube, the liquid bag tube is an elastic hollow part, and the volume of the liquid bag tube expands when liquid is filled in the liquid bag tube; the flow stopping clamp is arranged on the extension tube and is positioned on one side of the liquid bag tube close to the needle tube assembly.

Preferably, in the above-described indwelling needle, the balloon tube has two first connecting ports, and the balloon tube is connected to the extension tube through the two first connecting ports.

Preferably, in the above-mentioned indwelling needle, the sac tube is one or more.

Preferably, in the above-mentioned indwelling needle, a plurality of the sac tubes are serially connected into the extension tube.

Preferably, in the above-mentioned indwelling needle, the shape and size of each of the balloon tubes are the same.

Preferably, in the above-described indwelling needle, the sac tube has a second connection port, and the sac tube communicates with the extension tube through the second connection port.

Preferably, in the above-mentioned indwelling needle, the flow stopping clip is provided with an anti-slip projection.

Preferably, in the above indwelling needle, the infusion set includes an infusion connector, an end cap and a heparin cap, a first end of the infusion connector is connected to the extension tube, a second end of the infusion connector is connected to the heparin cap, and the end cap is connected to a side wall of the infusion connector.

Preferably, in the above-described indwelling needle, a filtering membrane is provided inside the extension tube or the sac tube.

Preferably, in the above-mentioned indwelling needle, the balloon tube is sealingly detachably connected to the extension tube.

Compared with the prior art, the beneficial effects of this application are:

the application provides an indwelling needle which comprises a needle tube component, an extension tube, a transfusion component, a flow stopping clamp and a liquid bag tube; the needle tube assembly is connected with the infusion assembly through the extension tube; the extension tube is communicated with the liquid bag tube, the liquid bag tube is an elastic hollow part, and the volume of the liquid bag tube expands when liquid is filled in the liquid bag tube; the flow stopping clamp is arranged on the extension tube and is positioned on one side of the liquid bag tube close to the needle tube assembly. This application intercommunication has the expandable liquid bag pipe of elasticity on the extension pipe, the tight flow stopping clamp of clamp after the envelope of pipe is finished in the infusion, then continue to pour into liquid to the extension pipe, because the envelope leads to the liquid in the extension pipe can't continue to carry in the needle tubing subassembly, the liquid of transport can make the liquid bag pipe inflation volume grow in the intraductal amasss of liquid bag, treat that the liquid bag pipe expands to after the certain degree, stop the envelope, the liquid bag pipe of filling expansion can contract gradually under the elastic action, make the liquid in the liquid bag pipe can continuously carry out the malleation infusion to needle tubing subassembly one side through the small clearance of flow stopping clamp centre gripping, the effectual advantage of keeping somewhere of effect that has the jam, the condition of the stifled pipe of the needle that significantly reduces, solve effectively and have the poor technical problem of effect that prevents the jam among.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural view of a first indwelling needle provided in an embodiment of the present application;

FIG. 2 is a schematic structural view of a balloon tube provided in accordance with an embodiment of the present disclosure during inflation;

FIG. 3 is an enlarged view of a flow stop clip provided in accordance with an embodiment of the present application;

FIG. 4 is a schematic diagram of a second fluid bag tube according to an embodiment of the present disclosure;

fig. 5 is a schematic connection diagram of a third liquid bag tube provided in the embodiment of the present application.

In the figure:

1 is a needle tube component, 2 is an extension tube, 3 is a transfusion component, 31 is a transfusion connector, 32 is an end cap, 33 is a heparin cap, 4 is a flow stopping clip, 41 is an anti-skid bulge, 42 is a micro gap, and 5 is a sac tube.

Detailed Description

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 only a part of the embodiments of the present application, and not all of the embodiments. 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.

In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

When the indwelling needle is not used for transfusion, blood of a patient easily flows back into the indwelling needle, so that the indwelling needle is easily blocked. In addition, blood remaining in the indwelling needle is easily coagulated, and thus the coagulated blood is easily introduced into a blood vessel to form a thrombus at the time of the next infusion, thereby harming the health of the human body. Keep somewhere needle at present generally all adopts the positive pressure to connect and produce an instantaneous positive pressure at the tube sealing in-process and reduce the condition of keeping somewhere needle stifled pipe, but can not continuously produce a positive pressure effect for keeping somewhere the needle, prevent that the effect of jam is poor, keep somewhere the needle and still can appear the condition of blockking up. The application provides a keep somewhere needle, the intercommunication has the expandable liquid bag pipe of elasticity on the extension pipe, the expanded liquid bag pipe of topping up can contract gradually under the elastic action for liquid in the liquid bag pipe can press from both sides the tiny clearance of centre gripping through the stagnant flow and continuously carry out the malleation infusion to needle tubing assembly one side, has the effectual advantage that prevents to block up, and the condition of the stifled pipe of needle is kept somewhere to the significantly reduced, solves effectively to have among the prior art and prevents the poor technical problem of effect that blocks up.

Referring to fig. 1-5, the present application provides an indwelling needle comprising a needle tube assembly 1, an extension tube 2, a transfusion assembly 3, a flow stopping clip 4 and a sac tube 5; the needle tube component 1 is connected with the transfusion component 3 through the extension tube 2; the extension tube 2 is communicated with a liquid bag tube 5, the liquid bag tube 5 is an elastic hollow part, and the volume of the liquid bag tube 5 expands when liquid is filled in the liquid bag tube; the flow stop clip 4 is mounted on the extension tube 2, and the flow stop clip 4 is located on the side of the liquid bag tube 5 close to the needle cannula assembly 1.

More specifically, the needle tube assembly 1 comprises an indwelling needle catheter, a needle seat and a needle wing, wherein the indwelling needle catheter is connected with the extension tube 2; before infusion, air in the indwelling needle catheter, the extension tube 2 and the liquid sac tube 5 needs to be exhausted completely; the engaging portion of the flow stop clip 4 is engaged under the corresponding portion, so that the extension tube 2 is held at the minute gap 42 between the first holding portion and the second holding portion of the flow stop clip 4, to allow the extension tube 2 to continue the transfusion to the indwelling needle catheter with a very small amount of liquid at a time.

In use, after the transfusion is finished, the tube sealing operation is carried out, then the flow stopping clamp 4 is clamped, then the liquid (usually physiological saline) is continuously injected into the extension tube 2, because the liquid in the extension tube 2 can not be continuously conveyed into the needle tube component 1 due to tube sealing, the conveyed liquid can be accumulated in the liquid bag tube 5 to enlarge the expansion volume of the liquid bag tube 5, after the liquid bag tube 5 is expanded to a certain degree, stopping transfusion to the extension tube 2, sealing the transfusion component 3, releasing the tube sealing, gradually contracting the liquid bag tube 5 inflated by the liquid under the action of elasticity, the liquid in the liquid bag tube 5 can continuously carry out positive pressure transfusion on one side of the needle tube component 1 through the tiny gap 42 clamped by the flow stopping clamp 4, the positive pressure transfusion device has the advantage of good effect of preventing blockage, the condition that the remaining needle blocks the tube is greatly reduced, and the technical problem that the effect of preventing blockage is poor in the prior art is effectively solved.

Furthermore, the anti-slip clips 4 are provided with anti-slip protrusions 41, and the anti-slip protrusions 41 may be semi-spherical, elliptical or serrated. The anti-slip protrusions 41 can effectively increase the friction force between the liquid-stopping clip and the human hand, so that the user can better hold the liquid-stopping clip. The hemispherical or oval anti-slip protrusions 41 can increase the friction force appropriately and effectively protect the fingers from being scratched. The serrated cleats 41 provide greater friction between the human hand and the fluid retaining clip than the semi-spherical cleats 41.

Further, the infusion set 3 comprises an infusion connector 31, an end cap 32 and a heparin cap 33, wherein a first end of the infusion connector 31 is connected with the extension tube 2, a second end of the infusion connector 31 is connected with the heparin cap 33, and the end cap 32 is connected with the side wall of the infusion connector 31. After the puncture needle is pulled out, liquid can be supplied to the indwelling needle catheter through the infusion component 3, and infusion for a patient is realized.

Furthermore, one or more layers of filtering membranes are arranged inside the extension tube 2 or the liquid sac tube 5, and in the infusion process, generated gas bubbles flow through the extension tube 2 or the liquid sac tube 5 and are intercepted and filtered through the filtering membranes, so that no bubbles exist on a pipeline between the extension tube 2 and the indwelling needle catheter, air bubbles are prevented from entering blood vessels of a human body, and the infusion safety of a patient is guaranteed.

Further, liquid bag pipe 5 can with extension pipe 2 through mode fixed connection such as gluing, hot pressing, have the advantage that processing is simple, liquid bag pipe 5 also can be sealed can dismantle with extension pipe 2 and be connected, convenient follow-up cleaning and disinfection recycle to liquid bag pipe 5, 5 surface thickness of liquid bag pipe are often thinner in addition, if find liquid bag pipe 5 surface damage, can follow extension pipe 2 and dismantle liquid bag pipe 5 that liquid bag pipe 5 more renewed. No matter the connection is fixed connection or sealed detachable connection, the liquid bag tube 5 can participate in the infusion passage of the extension tube 2 under the premise of no leakage of liquid, so that the liquid can be accumulated in the liquid bag tube 5 to expand and become larger when the subsequent tube sealing operation and the liquid stopping clamp are clamped conveniently.

The present application provides a first embodiment, please refer to fig. 1, which provides an indwelling needle, comprising a needle tube assembly 1, an extension tube 2, a transfusion assembly 3, a flow stopping clip 4 and a sac tube 5; the needle tube component 1 is connected with the transfusion component 3 through the extension tube 2; the liquid bag tube 5 is an elastic hollow part, the volume of the liquid bag tube 5 expands when liquid is filled in the liquid bag tube, the extension tube 2 is communicated with the liquid bag tube 5, the liquid bag tube 5 is provided with two first connecting ports, and the liquid bag tube 5 is connected into the extension tube 2 through the two first connecting ports; the flow stop clip 4 is mounted on the extension tube 2, and the flow stop clip 4 is located on the side of the liquid bag tube 5 close to the needle cannula assembly 1.

More specifically, i.e. the bag tube 5 participates in the normal infusion line of the extension tube; during normal transfusion, the transfusion line is a transfusion component 3-a liquid sac tube 5-an extension tube 2-a needle tube component 1-a blood vessel, the liquid sac tube 5 is filled with liquid, after the transfusion is finished, the tube sealing operation is carried out, and a flow stopping clamp 4 is clamped, namely, the liquid can not be led to the line at one side of the flow stopping clamp 4 close to the needle tube component 1, the transfusion efficiency of the liquid led to the extension tube 2 is that the transfusion efficiency is that the transfusion component 3-the liquid sac tube 5-a part of the extension tube 2 at one side close to the liquid sac tube 5, at the moment, the liquid can be gradually accumulated and expanded in the liquid sac tube 5, the tube sealing is stopped after the liquid sac tube 5 is expanded to a certain degree, the liquid filled and expanded liquid sac tube 5 can be gradually contracted under the elastic action, so that the liquid in the liquid sac tube 5 can continuously carry out positive pressure transfusion to one side of the needle tube component 1 through a micro gap 42 clamped by the flow stopping clamp 4, at the moment, the transfusion line is the liquid, can continuously inject micro liquid into the blood vessel of a patient, avoids the occurrence of blood backflow and coagulation in the indwelling needle catheter, and thereby reduces the risk of thrombosis in the indwelling needle catheter.

Referring to fig. 4, the present embodiment provides an indwelling needle comprising a needle tube assembly 1, an extension tube 2, a transfusion assembly 3, a flow stopping clip 4 and a sac tube 5; the needle tube component 1 is connected with the transfusion component 3 through the extension tube 2; the liquid bag tube 5 is an elastic hollow part, the volume of the liquid bag tube 5 is expanded when liquid is filled in the liquid bag tube 5, the extension tube 2 is communicated with a plurality of liquid bag tubes 5, each liquid bag tube 5 is provided with two first connecting ports, the liquid bag tube 5 is connected into the extension tube 2 through the two first connecting ports, and the liquid bag tubes 5 are connected into the extension tube 2 in series; the flow stop clip 4 is mounted on the extension tube 2, and the flow stop clip 4 is located on the side of the liquid bag tube 5 close to the needle cannula assembly 1.

More specifically, during normal infusion, the infusion line is the infusion set 3, each liquid bag tube 5, the extension tube 2, the needle tube set 1, the blood vessel, the liquid bag tube 5 is filled with liquid, after the infusion is finished, the tube sealing operation is performed, and the flow stopping clip 4 is clamped tightly, namely, the liquid cannot be led to the line on one side of the flow stopping clip 4 close to the needle tube set 1, the infusion efficiency of the liquid further led to the extension tube 2 is that the infusion set 3, each liquid bag tube 5, the extension tube 2 on one side close to the liquid bag tube 5, at this time, the liquid gradually accumulates and expands greatly in each liquid bag tube 5, after the liquid bag tube 5 expands to a certain degree, the infusion to the extension tube 2 is stopped, the infusion set 3 is sealed, the tube sealing is stopped, the liquid bag tube 5 which is inflated by filling liquid gradually contracts under the elastic action, so that the liquid in the liquid bag tube 5 can continuously perform positive pressure infusion on one side of the needle tube set 1 through the tiny gap 42 clamped by the flow stopping clip, at this time, the transfusion line comprises each liquid bag tube 5-extension tube 2-needle tube component 1-blood vessel, and micro liquid can be continuously injected into the blood vessel of a patient, so that the phenomena of blood backflow and coagulation in the indwelling needle catheter are avoided, and the risk of thrombosis in the indwelling needle catheter is reduced.

Further, in the present embodiment, the shape and size of each of the bag tubes 5 are the same, and the material is the same. After the tube sealing operation, because the pressure received by the liquid bag tube 5 closer to the flow stopping clip 4 is also large, at this time, the liquid bag tube 5 closer to the flow stopping clip 4 will expand first, that is, each liquid bag tube 5 along the direction from the flow stopping clip 4 to the infusion set 3 expands the accumulated liquid in sequence, and then the tube sealing is released, and the duration of the liquid bag tube 5 performing positive pressure infusion on one side of the needle tube assembly 1 through the tiny gap 42 clamped by the flow stopping clip 4 is related to the liquid accumulated by the liquid bag tube 5, so that a user can select the amount of the liquid required to be accumulated by the liquid bag tube 5 according to the next time required for the patient to perform infusion again, that is, select the amount of the liquid bag tubes 5 to expand and become large. Through the same liquid bag pipe 5 of a plurality of series connections can be convenient for medical personnel control liquid bag pipe 5 through the minute clearance 42 of the 4 centre grippings of flow stopping clamp carry out the duration of malleation infusion to needle tubing assembly 1 one side, and then can control and last the volume that is suitable to patient's vascular infusion well, avoid the infusion volume too big influence patient's healthy.

Referring to fig. 5, the present embodiment provides an indwelling needle comprising a needle tube assembly 1, an extension tube 2, a transfusion assembly 3, a flow stopping clip 4 and a sac tube 5; the needle tube component 1 is connected with the transfusion component 3 through the extension tube 2; the liquid bag tube 5 is an elastic hollow part, the volume of the liquid bag tube 5 expands when liquid is filled in the liquid bag tube 5, the extension tube 2 is communicated with the liquid bag tube 5, the liquid bag tube 5 is provided with a second connecting port, and the liquid bag tube 5 is communicated with the extension tube 2 through the second connecting port; the flow stop clip 4 is mounted on the extension tube 2, and the flow stop clip 4 is located on the side of the liquid bag tube 5 close to the needle cannula assembly 1.

More specifically, the liquid bag tube 5 is filled with liquid, during normal infusion, the infusion line is an infusion assembly 3-an extension tube 2-a needle tube assembly 1-a blood vessel, after the infusion is finished, a tube sealing operation is performed, and the flow stopping clip 4 is clamped, namely, liquid cannot be fed to the line on one side of the flow stopping clip 4 close to the needle tube assembly 1, the infusion efficiency of the liquid fed to the extension tube 2 is that the infusion assembly 3-a part of the extension tube 2 close to one side of the liquid bag tube 5-the liquid bag tube 5, at this time, the liquid gradually accumulates and expands in each liquid bag tube 5 to increase, after the liquid bag tube 5 expands to a certain degree, the infusion to the extension tube 2 is stopped, the infusion assembly 3 is sealed, the tube sealing is stopped, the liquid bag tube 5 which is inflated by filling liquid gradually contracts under the elastic action, so that the liquid in the liquid bag tube 5 can continuously perform positive pressure infusion to one side of the needle tube assembly 1 through a small gap 42 clamped by the flow stopping clip, at this time, the transfusion line comprises each liquid bag tube 5-extension tube 2-needle tube component 1-blood vessel, and micro liquid can be continuously injected into the blood vessel of a patient, so that the phenomena of blood backflow and coagulation in the indwelling needle catheter are avoided, and the risk of thrombosis in the indwelling needle catheter is reduced.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. An indwelling needle is characterized by comprising a needle tube component, an extension tube, a transfusion component, a flow stopping clamp and a liquid bag tube;

the needle tube assembly is connected with the infusion assembly through the extension tube;

the extension tube is communicated with the liquid bag tube, the liquid bag tube is an elastic hollow part, and the volume of the liquid bag tube expands when liquid is filled in the liquid bag tube;

the flow stopping clamp is arranged on the extension tube and is positioned on one side of the liquid bag tube close to the needle tube assembly;

and a filtering membrane is arranged inside the extension tube or the liquid bag tube.

2. The indwelling needle according to claim 1, wherein the balloon tube has two first connectors through which the balloon tube is accessed into the extension tube.

3. The indwelling needle according to claim 2, wherein the balloon tube is one or more.

4. The indwelling needle according to claim 3, wherein a plurality of the balloon tubes are serially connected into the elongate tube.

5. The indwelling needle according to claim 4, wherein each of the balloon tubes is identical in shape and size.

6. The indwelling needle according to claim 1, wherein the sac tube has a second connection port through which the sac tube communicates with the extension tube.

7. The indwelling needle according to claim 1, wherein the flow stopping clip is provided with anti-slip projections.

8. The indwelling needle of claim 1, wherein the infusion set comprises an infusion connector, an end cap and a heparin cap, wherein a first end of the infusion connector is connected to the extension tube, a second end of the infusion connector is connected to the heparin cap, and the end cap is connected to a side wall of the infusion connector.

9. The indwelling needle according to any of claims 1 to 8, wherein the balloon tube is sealingly detachable connected to the elongate tube.

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