CN205867203U - Infusion of separation membrance needleless connects - Google Patents

Abstract

The utility model relates to a needle-free transfusion joint with a separation membrane, the first connecting part of which is used for connecting with an external needle-free transfusion joint. The first connecting part is provided with a first diaphragm, and the second connecting part is provided with a second diaphragm, and when the first connecting part is inserted into the second connecting part, the first diaphragm and the second diaphragm can cooperate to completely close the partition. Diaphragm The diaphragm of the infusion pipeline of the needle-free infusion joint, so that at the end of the infusion, the operator only needs to use the flushing solution routinely and pull out the external needle-free infusion joint, and then insert the first connection part into the second connection part, Make the first diaphragm and the second diaphragm cooperate to completely seal the infusion pipeline, and a positive pressure will be automatically generated in the needle-free infusion connector of the septum. The negative pressure generated when the external needle-free infusion connector is pulled out will form an effective positive pressure in the infusion pipeline. The septum-membrane needleless infusion joint has a simple structure and is easy to operate.

Description

Separator Needleless Infusion Connector

technical field

The utility model relates to the field of medical equipment, in particular to a needle-free infusion joint with a separation membrane.

Background technique

When the traditional septum-needle-free closed infusion connector is in use, it is necessary to seal the tube with a positive pressure of the tube sealing fluid, and at the same time, it is necessary to clamp the hemostatic clip, so as to effectively prevent the indwelling needle lumen and the puncture of the blood vessel cavity caused by the infusion connector being unscrewed. The negative pressure (the volume occupied when the infusion connector is fully screwed in is about 0.3ml) can effectively prevent the occurrence of blood backflow or tube blockage of the venous indwelling needle. However, two auxiliary steps are required during operation, that is, sealing the tube with positive pressure and closing the hemostatic clip, and the operation is cumbersome. Clinically, the compliance of nurses is poor, and the omission of any of these steps may lead to the occurrence of indwelling needle blockage.

Utility model content

Based on this, it is necessary to provide a septum-membrane needle-free infusion connector with simple structure and easy operation.

A septum-membrane needle-free infusion connector, comprising a first connection part and a second connection part with an infusion pipeline inside; one end of the first connection part is nestedly connected with one end of the second connection part, and the The other end of the first connecting part is an external terminal for connecting with an external needle-free infusion connector, and the other end of the second connecting part is an indwelling needle connecting end for connecting with an indwelling needle tube; the first connecting part A first diaphragm is arranged in the infusion pipeline of the first connection part, and a second diaphragm is arranged in the infusion pipeline of the second connection part, and the second diaphragm part is separated from the infusion pipeline of the first connection part. Separate the infusion pipeline of the second connection part, when the first connection part is inserted into the second connection part, the first diaphragm and the second diaphragm can cooperate to completely seal the infusion pipeline diaphragm.

In one of the embodiments, the septum-membrane needle-free infusion connector further includes sleeves sleeved on the first connection part and the second connection part, and the two ends are respectively connected to the first connection part and the second connection part. A sealing sleeve for the sealing connection of the connecting portion, and the sealing sleeve can wrap the first connecting portion and the second connecting portion when the first connecting portion is inserted into or removed from the second connecting portion Parts of the body for mutual mating connection.

In one of the embodiments, the first connecting part is screwed to the second connecting part, and when the first connecting part and the second connecting part are screwed tightly, the first diaphragm and the the second septum is capable of cooperating to form a septum that completely encloses said infusion line;

When the first connecting part and the second connecting part are screwed tightly or unscrewed, the sealing sleeve can wrap the first connecting part and the second connecting part for mutual mating connection. part.

In one embodiment, the first connecting part has an internal thread, the second connecting part has an external thread, and the internal thread of the first connecting part is threadedly connected with the external thread of the second connecting part .

In one of the embodiments, the part of the first connecting part provided with the internal thread is in sealing connection with one end of the sealing sleeve at the end close to the external end; the second connecting part is provided with the The part of the external thread is sealingly connected with the other end of the sealing sleeve at the end close to the connecting end of the indwelling needle.

In one of the embodiments, the part of the first connecting part provided with the internal thread is provided with the first diaphragm near the end of the external end; the part of the second connecting part provided with the external thread A part is provided with the second septum at the end away from the connecting end of the indwelling needle.

In one embodiment, the shapes of the first diaphragm and the second diaphragm are complementary, and the first diaphragm and the second diaphragm can cooperate to form a shape consistent with the cross-sectional shape of the infusion tube.

In one of the embodiments, the first diaphragm includes two 1/4 circular diaphragms arranged symmetrically in the infusion pipeline, and the second diaphragm also includes two 1/4 circular diaphragms arranged symmetrically in the infusion pipeline. /4 round diaphragm.

In one embodiment, the distance between the first connecting part and the second connecting part is 5mm.

In one of the embodiments, the external end of the first connecting part has an external thread for connecting with the external needle-free infusion connector, and the indwelling needle connecting end of the second connecting part has an external thread for connecting with the indwelling needle tube. Connected internal thread.

The first connecting part of the above-mentioned septum needleless infusion connector is provided with a first diaphragm, and the second connecting part is provided with a second diaphragm, and when the first connecting part is inserted into the second connecting part, the first diaphragm and the second The diaphragm can cooperate with the diaphragm of the infusion pipeline that completely seals the septum needle-free infusion connector, so that at the end of the infusion, the operator only needs to pull out the external needle-free infusion connector after routine use of flushing fluid, and then connect the first connecting part Put it into the second connecting part, so that the first diaphragm and the second diaphragm cooperate to completely seal the infusion pipeline. At this time, a positive pressure will be automatically generated in the needle-free infusion connector of the septum, and the source of the positive pressure is the direction from the first connecting part The positive pressure generated by extruding the liquid when the second connecting part is inserted, no need to use positive pressure sealing liquid and hemostatic clip at this time, which can effectively eliminate the negative pressure generated when the external needle-free infusion connector is pulled out, And form an effective positive pressure in the infusion pipeline. The septum-membrane needle-free infusion joint has a simple structure and is easy to operate, and can effectively prevent the phenomenon of indwelling needles from clogging tubes.

Description of drawings

Fig. 1 is a schematic structural view of a septum-membrane needle-free infusion connector of an embodiment;

Fig. 2 is a sectional view along line A-A in Fig. 1;

Fig. 3 is a sectional view along line B-B in Fig. 1;

Fig. 4 is a sectional view along line C-C in Fig. 1 .

detailed description

In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. Preferred embodiments of the utility model are provided in the accompanying drawings. However, the invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present utility model more thorough and comprehensive.

It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of this invention. The terminology used in the description of the utility model herein is only for the purpose of describing specific embodiments, and is not intended to limit the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , the septum needle-free infusion connector 100 according to an embodiment includes a first connection part 110 , a second connection part 120 and a sealing sleeve 130 .

Infusion tubes are disposed inside the first connecting portion 110 and the second connecting portion 120 . One end of the first connecting part 110 is mated and nestedly connected with one end of the second connecting part 120 . Specifically, in this embodiment, the first connection part 110 and the second connection part 120 are screwed together. Wherein, one end of the first connecting part 110 has an internal thread, and one end of the second connecting part 120 has an external thread. The first connecting part 110 is threadedly connected with the outer thread of the second connecting part 120 through its inner thread.

It can be understood that, in other embodiments, the connection between the first connection part 110 and the second connection part 120 is not limited to threaded connection, and other nested connection methods can also be used, such as the first connection part 110 is nested in the second connection On the part 120, the first connecting part 110 is provided with a guide groove and a limit groove on the inner wall of the infusion pipeline (the guide groove and the limit groove do not penetrate the pipeline wall of the infusion pipeline), and the guide groove is arranged along the axial direction of the infusion pipeline, and the limit The grooves are arranged at both ends of the guide groove respectively to form a limit and communicate vertically with the guide groove. The second connecting part 120 is provided with a limit protrusion that matches the guide groove and the limit groove. The guide groove and the limit groove cooperate to realize the insertion of the first connecting part 110 and the second connecting part 120 (that is, the first connecting part 110 is close to the second connecting part 120), and the setting is separated (that is, the first connecting part 110 is relatively close to the second connecting part 120). The two connecting parts 120 are separated from) and/or clamped.

The other end of the first connecting part 110 is an external terminal for needle-free connection with an external needle-free infusion connector. The external end is preferably designed with an external thread, that is, the first connecting portion 110 is threadedly connected with the internal thread of the external needle-free infusion connector through the external thread. The other end of the second connecting part 120 is an indwelling needle connection end for connecting with an indwelling needle tube. The indwelling needle connection end has an internal thread for connecting with the indwelling needle tube.

A first septum 112 is disposed in the infusion tube of the first connection part 110 . The first septum 112 partially separates the infusion tube of the first connection part 110 . A second septum 122 is disposed in the infusion tube of the second connection part 120 . The second septum 122 partially separates the infusion tube of the second connection part 120 . When the first connecting part 110 is inserted into the second connecting part 120, the first diaphragm 112 and the second diaphragm 122 can cooperate to form a diaphragm that completely seals the infusion pipeline.

Specifically, in this embodiment, the part of the first connecting part 110 provided with an internal thread is provided with a first diaphragm 112 at an end close to the external end. The part of the second connecting part 120 provided with an external thread is provided with a second septum 122 at the end away from the connecting end of the indwelling needle. When the first connecting part 110 and the second connecting part 120 are screwed tightly, the first diaphragm 112 and the second diaphragm 122 can cooperate to abut and form a diaphragm that completely seals the infusion pipeline; when the first connecting part 110 and the second connecting part When the thread 120 is unscrewed, the first septum 112 is separated from the second septum 122 to make the infusion pipeline open.

In this embodiment, the shapes of the first membrane 112 and the second membrane 122 are complementary. The first diaphragm 112 and the second diaphragm 122 can cooperate to form a shape consistent with the cross-sectional shape of the infusion tube. For example, the first diaphragm 112 may include but not limited to two 1/4 circular diaphragms symmetrically arranged in the infusion pipeline, and the second diaphragm 122 may also include but not limited to two 1/4 circular diaphragms symmetrically arranged in the infusion pipeline diaphragm.

It can be understood that, in other embodiments, the shapes of the first diaphragm 112 and the second diaphragm 122 are not limited to complement each other. After the first diaphragm 112 and the second diaphragm 122 are mated and abutted, the two may also partially overlap. It has a sealing and isolation effect.

Furthermore, in this embodiment, the first connection part 110 and the second connection part 120 may be combined with but not limited to 5mm under normal conditions, so as to ensure the cylindrical appearance of the septum needle-free infusion connector 100 . When conventional tube sealing or infusion is required, the distance between the first connecting part 110 and the second connecting part 120 can be but not limited to 5 mm, that is, after the infusion, the first connecting part 110 can be moved to the The second connecting part 120 is inserted into 5mm. At this time, the first diaphragm 112 and the second diaphragm 122 abut and fully cooperate to form a diaphragm that seals the infusion pipeline. When infusion is required, the first connecting part 110 can be connected to the second diaphragm. The part 120 is set apart by 5mm to separate the first diaphragm 112 from the second diaphragm 122, and the infusion pipeline is connected, so that the infusion can be performed normally.

The sealing film 130 is sleeved on the first connecting portion 110 and the second connecting portion 120 . Two ends of the sealing sleeve 130 are sealed and connected to the first connecting portion 110 and the second connecting portion 120 respectively. The sealing sleeve 130 can enclose the parts of the first connecting part 110 and the second connecting part 120 that are used for mating connection when the first connecting part 110 is inserted into or separated from the second connecting part 120 .

Specifically, in this embodiment, the part of the first connecting part 110 provided with an internal thread is in sealing connection with one end of the sealing sleeve film 130 at the end close to the external end, and the part of the second connecting part 120 provided with an external thread is close to the indwelling end. The end of the needle connection end is sealed and connected with the other end of the sealing sleeve 130, so that the sealing sleeve 130 can wrap the first connecting portion 110 when the first connecting portion 110 and the second connecting portion 120 are screwed tightly or unscrewed. The part used for mutual mating connection with the second connecting part 120 .

The sealing sleeve film 130 preferably adopts a PVC soft sleeve with a thickness of 0.2mm. The sealing sleeve film 130 loosely wraps the first connecting part 110 and the second connecting part 120 to ensure that the parts of the first connecting part 110 and the second connecting part 120 that are used to cooperate with each other are always in a closed aseptic space to prevent the pollute. The sealing sleeve 130 is preferably capable of forming a cylindrical structure with a maximum diameter of 15 mm and a length of 18 mm, compared to the maximum outer diameter of 9.2 mm and inner diameter of 8.4 mm and the first connection part 110 and the second connection part 110 of the present embodiment. The maximum pitch between the internal and external threads of the connecting part 120 is 15 mm, which can ensure that the sealing sleeve film 130 always covers the interconnected parts of the first connecting part 110 and the second connecting part 120 .

It can be understood that, in other embodiments, the septum-membrane needle-free infusion connector 100 may not contain the sealing sleeve 130 , and the corresponding septum-membrane needle-free infusion connector 100 can be applied in a sterile and ultra-clean medical environment.

The first connecting part 110 of the above-mentioned septum-needle-free infusion connector 100 is provided with a first diaphragm 112, and the second connecting part 120 is provided with a second diaphragm 122, and when the first connecting part 110 is inserted into the second connecting part 120 , the first diaphragm 112 and the second diaphragm 122 can cooperate to form a diaphragm that completely seals the infusion pipeline of the septum needle-free infusion connector 100, so that at the end of the infusion, the operator only needs to routinely use normal saline or heparin and other flushing solutions. Pull out the external needle-free infusion connector, and then insert the first connecting part 110 into the second connecting part 120, such as 5mm, so that the first diaphragm 112 cooperates with the second diaphragm 122 to completely seal the infusion pipeline. Positive pressure can be automatically generated in the septum needle-free infusion connector 100, and the source of the positive pressure is the positive pressure generated by extruding the liquid when the first connecting part 110 is inserted into the second connecting part 120 (the size of the pressure is 5 mm in length and 5 mm in diameter. 8.4mm cylinder volume positive pressure), at this time, it is no longer necessary to use positive pressure sealing fluid and hemostatic clips, which can effectively eliminate the negative pressure generated when the external needle-free infusion connector is pulled out, and the infusion An effective positive pressure is established in the pipeline. When infusion is required, the operator only needs to sleeve the first connecting part 110 away from the second connecting part 120, such as 5 mm, so that the first diaphragm 112 is separated from the second diaphragm 122, and the infusion pipeline is connected. The same amount of negative pressure will be formed in the pipeline (the pressure is the negative pressure of the volume of a cylinder with a length of 5mm and a diameter of 8.4mm). ). The generation of "blood return" can clearly indicate to the operator that the indwelling needle tube is still in the blood vessel, so that the operator does not need to draw back blood or prefill normal saline to determine whether the indwelling needle tube is in the blood vessel, which can effectively reduce the number of operators. The tedious monitoring can effectively improve work efficiency and reduce the waste of consumables.

The septum-membrane needle-free infusion connector 100 is simple in structure and easy to operate, and can effectively prevent the phenomenon of indwelling needles from clogging tubes.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the utility model, and the description thereof is relatively specific and detailed, but it should not be understood as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (9)

1. A septum-membrane needle-free infusion connector, characterized in that it includes a first connection part and a second connection part with an infusion pipeline inside; one end of the first connection part is matched with one end of the second connection part Nested connection, the other end of the first connection part is an external end for connecting with an external needle-free infusion connector, and the external end of the first connection part has a function for connecting with the external needle-free infusion connector the external thread of the second connecting part, the other end of the second connecting part is the connecting end of the indwelling needle for connecting with the indwelling needle tube; the infusion pipeline of the first connecting part is provided with a first septum, and the first septum part separates The infusion pipeline of the first connection part, the infusion pipeline of the second connection part is provided with a second diaphragm, and the second diaphragm part separates the infusion pipeline of the second connection part, when the first connection When the part is inserted into the second connecting part, the first diaphragm and the second diaphragm can cooperate to form a diaphragm that completely seals the infusion pipeline; The septum needle-free infusion connector further includes a sealing sleeve sleeved on the first connecting part and the second connecting part, and the two ends are respectively sealed and connected to the first connecting part and the second connecting part When the first connecting part is inserted into or separated from the second connecting part, the sealing sleeve can wrap the first connecting part and the second connecting part for mutual mating connection. part. 2. The septum-membrane needle-free infusion connector according to claim 1, wherein the first connection part is screwed to the second connection part, when the first connection part is connected to the second connection part When the thread is tightened, the first diaphragm and the second diaphragm can cooperate to form a diaphragm that completely seals the infusion pipeline; When the first connecting part and the second connecting part are screwed tightly or unscrewed, the sealing sleeve can wrap the first connecting part and the second connecting part for mutual mating connection. part. 3. The septum needle-free infusion connector according to claim 2, wherein the first connecting part has an internal thread, the second connecting part has an external thread, and the first connecting part has an internal thread through its internal thread. It is threadedly connected with the external thread of the second connecting part. 4. The septum-membrane needle-free infusion connector according to claim 3, characterized in that, the part of the first connecting part provided with the internal thread is between the end near the outer end and one end of the sealing sleeve. Sealed connection; the part of the second connecting part provided with the external thread is in sealing connection with the other end of the sealing sleeve at the end close to the connecting end of the indwelling needle. 5. The septum-membrane needle-free infusion connector according to claim 3, characterized in that, the part of the first connecting part provided with the internal thread is provided with the first septum at the end close to the external end; The part of the second connecting part provided with the external thread is provided with the second septum at the end away from the connecting end of the indwelling needle. 6. The septum-needle-free infusion connector according to any one of claims 1-5, characterized in that, the shapes of the first septum and the second septum are complementary, and the shapes of the first septum and the second septum are complementary. The two diaphragms can cooperate to form a shape consistent with the cross-sectional shape of the infusion pipeline. 7. The diaphragm-needle-free infusion connector according to claim 6, wherein the first diaphragm comprises two 1/4 circular diaphragms arranged symmetrically in the infusion pipeline, and the second diaphragm is also It includes two 1/4 circular diaphragms arranged symmetrically in the infusion pipeline. 8. The septum-membrane needle-free infusion connector according to any one of claims 1 to 5, wherein the stroke of inserting or separating the first connecting part and the second connecting part is 5 mm . 9. The septum-membrane needle-free infusion connector according to any one of claims 1-5, characterized in that, the indwelling needle connection end of the second connection part has an internal thread for connecting with the indwelling needle tube.