WO2018093147A1

WO2018093147A1 - Infusion set having function of preventing blood leakage and backflow

Info

Publication number: WO2018093147A1
Application number: PCT/KR2017/012946
Authority: WO
Inventors: 최근욱
Original assignee: 최근욱
Priority date: 2016-11-16
Filing date: 2017-11-15
Publication date: 2018-05-24
Also published as: KR20180055095A

Abstract

The present invention relates to an infusion set having a blood leakage and backflow prevention function. More particularly, the present invention relates to an infusion set having a blood leakage and backflow prevention function comprising: a catheter having a needle film which is inserted into a blood vessel of a patient by means of an infusion injection needle unit and has an injection hole therein, an expansion portion provided at a rear end of the needle film, a check valve unit installed inside the expansion portion to prevent blood leakage; an adapter having an insertion end passing through the check valve unit when installed, an mounting end fixedly inserted into the expansion portion, and a hollow hole formed therein; and a supply tube having one side connected to the adapter and the other side connected to an infusion solution container to supply the infusion solution to the blood vessel.

Description

Infusion set with blood leakage and backflow prevention function

The present invention relates to an infusion set having a function of preventing blood leakage and reflux.

In general, patients who are unable to adequately receive essential nutrients by mouth can maintain fluids, electrolytes, vitamins, proteins, fats and calories, maintain proper blood components, or take medication quickly in an emergency. In order to supply, the hospital administers fluids or drugs in the vein of the patient through a syringe or the like.

In order to administer intravenous fluids or drugs in the vein of the patient through the infusion syringe, a vascular injection catheter is first injected into the blood vessel of the patient, and then the fluid supply tube is connected to the hose connector of the catheter.

1A illustrates a cross-sectional view of a conventional IV needle unit for injecting a catheter into a patient's blood vessel. 1B shows a front view of a conventional infusion needle unit with the cover removed. In addition, FIG. 1C shows a state diagram schematically illustrating a state in which an infusion syringe unit is injected into a patient and only a catheter is detached.

As shown in FIG. 1A, a typical infusion needle unit 1 includes a cover 2, a catheter 10, a needle 4, a body unit 3, a needle body 5, and a support 6. It can be seen that including the configuration. Before the catheter 10 is injected, the cover 2 is mounted on the top of the body unit 3.

Then, as shown in FIG. 1B, the cover 2 is detached to inject the catheter 10, and as shown in FIG. 1C, the needle 4 and the catheter 10 are integrated into the blood vessel of the patient. Will be injected. And, leaving only the catheter 10 in the blood vessel, it can be seen that the infusion injection needle (4), needle body (5), body unit (3), support portion (6) to be pulled out integrally.

After the catheter 10 is introduced into the blood vessel, the supply tube 30 is mounted to the expansion part 12 of the catheter 10. 1D shows a state diagram in which the supply tube 30 is mounted on the catheter 10. 1E shows the configuration of the infusion set equipped with the supply tube 30. As shown in Figure 1e, a typical infusion set is a vessel in which the sap is stored, the support vessel (8) on which the infusion container (7) is mounted, the infusion vessel (8) and the catheter 10 by connecting the vessel Supply tube 30 for supplying the sap, the dropping container (9) provided at the bottom of the infusion container (8), the flow control unit 40 for adjusting the flow rate of the supplied sap provided on one side of the supply tube (30) It may be configured to include.

However, after the catheter 10 is introduced into the blood vessel, the blood of the human body may leak or leak to the outside of the catheter 10 until the supply tube 30 is mounted. In addition, by pressing the catheter introduced into the blood vessel and the blood vessel located in front of the catheter in order to prevent leakage and leakage of blood to the outside of the catheter 10, the patient may feel pain as well as the catheter may be distorted. FIG. 1f shows a state diagram of a situation where blood leaks to the outside of the catheter 10 before mounting the supply tube 30.

Therefore, after introducing the syringe into the blood vessel, a needle was required to develop a fluid set to prevent the leakage of blood in the process of detaching the needle and connecting the catheter and the supply tube.

Therefore, the present invention has been made to solve the conventional problems as described above, according to an embodiment of the present invention, the check valve unit is installed inside the expansion pipe to prevent the external leakage of blood before the adapter is mounted The purpose is to provide a set of infusions.

In addition, according to one embodiment of the present invention, the end of the adapter is provided with a tapered insertion end which is gradually reduced in outer diameter in one direction. Thus, when only the check valve unit made of silicon or rubber is installed in the existing catheter, the insertion end penetrates the backflow prevention membrane of the check valve unit when the adapter is connected to the catheter. The purpose of this invention is to provide a set of fluids that can prevent backflow after connecting the adapter, and to prevent leakage of fluid or blood between the adapters when the catheter is exchanged to supply another fluid. have.

In addition, according to one embodiment of the present invention, by having a mounting end on the outside of the adapter, the supply tube can be bent, bent into a U-shape, and then fixed to the adapter. It is an object of the present invention to provide a set of sap that can drastically reduce the number of tapings for fixing the supply tube to the human body.

On the other hand, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned are clearly to those skilled in the art from the following description. It can be understood.

An object of the present invention, in the infusion set, the needle film is introduced into the blood vessels of the patient by the infusion injection needle unit and having an injection hole therein, an expansion tube provided at the rear end of the needle film, and inside the expansion tube A catheter having a check valve unit installed to prevent leakage of blood; An adapter having a hollow hole formed therein and having an insertion end penetrating through the check valve unit and a mounting end inserted into the expansion pipe and fixedly mounted therein; And one side is connected to the adapter, the other side is connected to the fluid container can be achieved as a set of fluids having a blood leakage, backflow prevention function comprising a; supplying fluid to the vessel.

In addition, before the needle film is injected into the blood vessel and the adapter is mounted on the catheter, the check valve unit prevents leakage of blood, and an insertion end of the adapter passes through the check valve unit so that the adapter is connected to the catheter. When mounted in the fluid may be supplied to the blood vessels.

The check valve unit is made of silicon or rubber material, and has a hollow body part fixedly installed in the expansion pipe, and seals the inside of the body part before insertion of the insertion end, and the insertion end when the catheter is mounted. It may be characterized in that it comprises a backflow prevention film is penetrated.

In addition, the adapter is connected to the other end of the front end and the front end connected to the other end of the front connection end, and the outer end is configured to be larger than the front connection end and the other end of the protruding end is connected to the outside Including a rear connection end is inserted, the supply tube is inserted, the insertion end of the adapter may be characterized in that it has a tapered shape that the outer diameter is gradually reduced to one side.

And, it may be characterized in that it further comprises a mounting unit which is provided on one side of the adapter outer surface to mount one side of the supply tube.

According to one embodiment of the present invention, the check valve unit is installed inside the expansion pipe and has an effect of preventing external leakage of blood before the adapter is mounted.

And, according to one embodiment of the present invention, if only the check valve unit of silicon or rubber material is installed in the existing applied catheter, the insertion end when the adapter is connected to the catheter penetrates the backflow prevention membrane of the check valve unit. Therefore, backflow can be prevented after connecting the adapter. When the catheter is exchanged to supply another fluid, it has an effect of preventing leakage of the fluid or blood even when the adapter is removed and then remounted.

In addition, according to one embodiment of the present invention, by having a mounting end on the outside of the adapter, the supply tube can be bent, bent into a U-shape, and then fixed to the adapter. Therefore, there is an effect that can significantly reduce the number of taping for fixing the supply tube to the human body.

On the other hand, the effect obtained in the present invention is not limited to the above-mentioned effects, other effects that are not mentioned will be clearly understood by those skilled in the art from the following description. Could be.

The following drawings, which are attached to this specification, illustrate one preferred embodiment of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be construed as limited.

1A is a front view of a conventional infusion needle unit;

1B is a front view of a conventional infusion needle unit with the cover removed;

1C is a diagram schematically illustrating a state in which an infusion needle unit is injected to a patient, and only a needle film is detached.

1d is a state in which the feed tube is mounted on the catheter,

Figure 1e is a configuration diagram of the infusion set equipped with a supply tube,

Figure 1f is a state diagram of the situation where the blood leakage to the outside of the catheter before mounting the supply tube,

Figure 2 is an exploded perspective view of the catheter and adapter of the infusion set according to an embodiment of the present invention,

3A is a perspective view of a catheter according to an embodiment of the present invention;

Figure 3b is an exploded perspective view of the catheter according to an embodiment of the present invention,

Figure 3c is a cross-sectional view of the catheter according to an embodiment of the present invention,

Figure 4a is a perspective view of a check valve unit built in the catheter in accordance with an embodiment of the present invention,

Figure 4b is a cross-sectional view of the check valve unit built in the catheter in accordance with an embodiment of the present invention,

5A is a perspective view of an adapter according to an embodiment of the present invention;

5b is a side view of an adapter according to an embodiment of the present invention;

Figure 5c is a cross-sectional view of the adapter according to an embodiment of the present invention,

Figure 5d is a perspective view of the adapter having a mounting unit according to an embodiment of the present invention,

6A is a perspective view and a partially enlarged view of a state in which a needle film of a catheter is injected into a human body according to one embodiment of the present invention;

6B is a perspective view and a partially enlarged view of a state in which an adapter is mounted to a catheter according to an embodiment of the present invention;

Figure 6c is a perspective view of a state in which the supply tube is mounted on the mounting unit according to an embodiment of the present invention,

6D is a perspective view and a partially enlarged view of a state in which the adapter is detached from FIG. 6B;

6E illustrates a perspective view and a partially enlarged view of a state in which the adapter is mounted on the catheter again according to an embodiment of the present invention.

Objects, other objects, features and advantages of the present invention will be readily understood through the following preferred embodiments associated with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure may be made thorough and complete, and to fully convey the spirit of the invention to those skilled in the art.

In the present specification, when a component is mentioned to be on another component, it means that it may be formed directly on the other component or a third component may be interposed therebetween. In addition, in the drawings, the thickness of the components are exaggerated for the effective description of the technical content.

Embodiments described herein will be described with reference to cross-sectional and / or plan views, which are ideal exemplary views of the present invention. In the drawings, the thicknesses of films and regions are exaggerated for effective explanation of technical content. Therefore, the shape of the exemplary diagram may be modified by manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention are not limited to the specific forms shown, but also include changes in forms generated according to manufacturing processes. For example, the region shown at right angles may be rounded or have a predetermined curvature. Thus, the regions illustrated in the figures have properties, and the shape of the regions illustrated in the figures is intended to illustrate a particular form of region of the device and is not intended to limit the scope of the invention. Although terms such as first and second are used to describe various components in various embodiments of the present specification, these components should not be limited by such terms. These terms are only used to distinguish one component from another. The embodiments described and illustrated herein also include complementary embodiments thereof.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, the words 'comprises' and / or 'comprising' do not exclude the presence or addition of one or more other components.

In describing the specific embodiments below, various specific details are set forth in order to explain the invention more specifically and to help understand. However, those skilled in the art can understand that the present invention can be used without these various specific details. In some cases, it is mentioned in advance that parts of the invention which are commonly known in the description of the invention and which are not highly related to the invention are not described in order to prevent confusion in explaining the invention without cause.

Hereinafter will be described the configuration and function of the fluid set 100 having a blood leakage, backflow prevention function according to an embodiment of the present invention. 2 is an exploded perspective view of the catheter 10 and the adapter 20 of the infusion set 100 according to an embodiment of the present invention. As shown in FIG. 2, the fluid set 100 having a blood leakage and backflow prevention function according to an embodiment of the present invention includes a catheter 10, an adapter 20, a flexible connection part 31, and a supply tube 30. It can be seen that it can be configured to include).

The catheter 10 according to an embodiment of the present invention, the needle film 11 is introduced into the blood vessel of the patient by the infusion injection needle unit 1 and has an injection hole therein, and the rear end of the needle film 11 It is configured to include an expansion tube 12 provided, and a check valve unit 14 installed in the expansion tube 12 to prevent leakage of blood.

3A illustrates a perspective view of a catheter 10 in accordance with one embodiment of the present invention. 3B illustrates an exploded perspective view of the catheter 10 according to an embodiment of the present invention, and FIG. 3C illustrates a cross-sectional view of the catheter 10 according to an embodiment of the present invention.

As shown in Figure 3a to 3c, the catheter 10 according to an embodiment of the present invention is a conventional catheter, the needle film 11 is introduced into the blood vessels of the patient, of the needle film 11 It has an expansion pipe part 12 to which the adapter 20 is mounted in the rear end. It can be seen that the needle film 11 includes an expansion end 12 and a fitting end 13 for mounting the needle film 11.

As a feature of the invention, the check valve unit 14 is installed inside the expansion tube 12 to prevent external leakage of blood before the adapter 20 is mounted or after the adapter 20 is removed. When feeding the sap prevents the backflow of the sap.

Figure 4a shows a perspective view of the check valve unit 14 built in the catheter 10 in accordance with an embodiment of the present invention. And, Figure 4b shows a cross-sectional view of the check valve unit 14 embedded in the catheter 10 according to an embodiment of the present invention.

Before the needle film 11 is injected into the blood vessel and the adapter 20 is mounted on the catheter 10, the check valve unit 14 prevents leakage of blood. When the insertion end 21 of the adapter 20 passes through the check valve unit 14 and the adapter 20 is mounted to the catheter 10, the fluid is supplied to the blood vessel and the back flow of the fluid is prevented.

The check valve unit 14 may be made of a silicon or rubber material, as shown in Figure 4a and 4b, in one embodiment of the present invention includes a body portion 15 and the backflow prevention film (16) Can be configured. The body portion 15 is hollow and fixedly installed in the expansion pipe portion 12, and the backflow prevention film 16 seals the inside of the body portion 15 before insertion of the insertion end 21 so that the adapter 20 is mounted. It can prevent the leakage of whole blood. When the adapter 20 is mounted on the catheter 10, the insertion end 21 penetrates the backflow prevention film 16.

Adapter 20 according to an embodiment of the present invention is configured to include the insertion end 21 and the mounting end (22). 5A shows a perspective view of an adapter 20 according to one embodiment of the invention. And, Figure 5b shows a side view of the adapter 20 according to an embodiment of the present invention, Figure 5c shows a cross-sectional view of the adapter 20 according to an embodiment of the present invention.

The adapter 20 has a hollow hole that penetrates from one side to the other side as a whole. The insertion end 21 of the adapter 20 is penetrated by the check valve unit 14 when mounted to the catheter 10, the mounting end 22 is inserted into the expansion tube 12 is fixedly mounted.

As shown in Figure 5a to 5c, the adapter 20 according to an embodiment of the present invention, the front connection end 23 is connected to the other end of the mounting end 22. The outer diameter of the front connection end 23 is provided to be larger than the outer diameter of the mounting end 22 to form a longitudinal projection to the outside. Therefore, when the adapter 20 is mounted, the mounting end 22 is fitted into the expansion tube 12 and the front connecting end 23 serves as a locking step.

The adapter 20 is connected to the other end of the front connecting end 23, the outer end is configured to be larger than the front connecting end (23) and the other end of the protruding end 24 and is supplied to the outside The tube 30 is configured to include a rear connection end 25 is inserted and mounted.

One side of the supply tube 30 is connected to the rear connection end 25 of the adapter 20, the other side is connected to the fluid container to supply the fluid to the blood vessel in which the needle film 11 is introduced.

In addition, the insertion end 21 of the adapter 20 has a tapered shape in which the outer diameter is gradually reduced to one side.

5d shows a perspective view of an adapter 20 having a mounting unit 26 according to one embodiment of the invention. As shown in Figure 5d, it can be seen that the adapter 20 is provided on one side of the outer surface may further comprise a mounting unit 26 that can be mounted to one side of the supply tube (30).

That is, the adapter 20 according to an embodiment of the present invention, as shown in Figure 5d, is provided with a mounting unit 26 for fixing one side of the supply tube 30, the rear feed tube 30 After connecting to the connection terminal 25, the supply tube 30 can be coupled through the mounting unit 26 in a state in which the supply tube 30 is bent in a U-shape. In a specific embodiment of the present invention, the mounting unit 26 has a form in which the supply tube 30 can be coupled and fixed in an interference fit manner. However, as long as it is a member which can attach / detach the supply tube 30, the specific structure and form are not restrict | limited.

Therefore, by having the mounting unit 26 on the outside of the protruding end 24 of the adapter 20 according to an embodiment of the present invention, after bending and bending the supply tube 30 in a U-shape, the adapter 20 Can be fixed at As a result, the number of taping for fixing the supply tube 30 to the human body can be significantly reduced.

Hereinafter, a description will be given of a method of using the infusion set 100 having a blood leakage and backflow prevention function according to an embodiment of the present invention mentioned above. FIG. 6A illustrates a perspective view and a partially enlarged view of a state in which the needle film 11 of the catheter 10 is injected into a human body according to an embodiment of the present invention. As shown in FIG. 6A, the needle film 11 of the catheter 10 is introduced into the blood vessels of the human body using the IV injection needle unit 1, and the IV injection unit 1 except for the catheter 10 is inserted. It can be seen that the desorption. Before removing the fluid injection needle unit 1 and mounting the adapter 20, the check valve unit 14 as described above in the expansion portion 12 of the catheter 10 according to the embodiment of the present invention. ) To prevent blood from leaking outside the catheter 10.

Figure 6b shows a perspective view and a partially enlarged view of the adapter 20 is mounted on the catheter 10 according to an embodiment of the present invention. As shown in FIG. 6B with the adapter 20 mounted to the catheter 10, the insertion end 21 of the adapter 20 is inserted through the check valve unit 14 and the adapter 20 is mounted. It can be seen that the adapter 20 is mounted to the catheter 10 while the end 22 is fitted to the expansion tube 12. As mentioned above, by adopting a structure in which the insertion end 21 of the adapter 20 penetrates the check valve unit 14, it is possible to prevent backflow of the sap.

Figure 6c is a perspective view of a state in which the supply tube 30 is mounted to the mounting unit 26 in accordance with an embodiment of the present invention. The adapter 20 is provided with a mounting unit 26 that can secure one side of the supply tube (30). Therefore, after connecting the supply tube 30, the supply tube 30 can be coupled through the mounting unit 26 in a state in which the supply tube 30 is bent in a U-shape.

FIG. 6D illustrates a perspective view and a partially enlarged view of the adapter 20 in FIG. 6B in a detached state. 6E illustrates a perspective view and a partially enlarged view of the adapter 20 according to an embodiment of the present invention mounted on the catheter 10 again.

As shown in FIG. 6D, when the supply of the sap is stopped or another sap is to be supplied, the needle film 11 is detached from the blood vessel, and the new needle film 11 does not need to be re-introduced. Since the backflow of the sap and blood is prevented, after removing the adapter 20 only, another adapter 20 can be mounted and used.

That is, as shown in FIG. 6D, even when the adapter 20 is detached after supplying the fluid, the check valve unit 14 prevents the backflow and leakage of the fluid. In this state, as shown in Figure 6e, it can be seen that it is possible to supply the fluid by mounting the adapter 20 again without having to replace the needle film (11).

In addition, the above-described apparatus and method may not be limitedly applied to the configuration and method of the above-described embodiments, but the embodiments may be selectively combined in whole or in part in each of the embodiments so that various modifications may be made. It may be configured.

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Claims

In the infusion set,

A needle film introduced into a patient's blood vessel by a fluid injection needle unit and having an injection hole therein, an expansion pipe provided at the rear end of the needle film, and a check valve unit installed inside the expansion pipe to prevent leakage of blood. Catheter having;

An adapter having a hollow hole formed therein and having an insertion end penetrating through the check valve unit and a mounting end inserted into the expansion pipe and fixedly mounted therein; And

One side is connected to the adapter, the other side is connected to the fluid container, the supply tube for supplying the fluid to the vessel; characterized in that the blood leakage, the fluid set having a backflow prevention function.
The method of claim 1,

Before the needle film is injected into the blood vessel and the adapter is mounted on the catheter, the check valve unit prevents leakage of blood, and an insertion end of the adapter passes through the check valve unit so that the adapter is mounted on the catheter. When the fluid is supplied to the blood vessels, characterized in that the blood leakage, fluid set having a backflow prevention function.
The method of claim 2,

The check valve unit is made of silicon or rubber,

A blood leak characterized in that it comprises a hollow body portion fixed to the expansion pipe portion, and the back flow prevention membrane to seal the inside of the body portion before insertion of the insertion end and the insertion end is penetrated when the catheter is mounted , Infusion set with backflow prevention function.
The method of claim 3, wherein

The adapter includes a front connection end connected to the other end of the mounting end, a projection end connected to the other end of the front connection end and having an outer diameter larger than the front connection end, and connected to the other end of the protrusion and outwardly. A rear connection end into which the feed tube is inserted and mounted,

The insertion end of the adapter has a tapered shape of which the outer diameter is gradually reduced to one side, the blood leakage, the fluid set having a backflow prevention function.
The method of claim 4, wherein

The fluid set having a blood leakage, backflow prevention function further comprises a mounting unit which is provided on one side of the adapter outer surface to mount one side of the supply tube.