KR102124576B1 - 3way type intravascular catheter - Google Patents

Abstract

The present invention relates to a vascular 3-way catheter device which is inserted into a blood vessel of a human body to allow a catheter tube for extracting blood or forming an injection path of a drug to be stably inserted into the blood vessel. According to the present invention, a needle plug provided on a catheter body allows the movement of a needle and blocks a withdrawal path of the needle after the needle is separated from the catheter body. Thus, in a process of removing the needle, blood can be prevented from being leaked to the outside of the catheter body. Through the structure of a needle ejector, a needle hub constituting a needle member moves the catheter body forward in the blood vessel direction by a user′s pressure and moves the needle in the opposite direction. Thus, while the catheter tube can be stably inserted into the blood vessel, the needle can be separated from the blood vessel and the catheter body.

Description

Vascular 3WAY catheter device{3WAY TYPE INTRAVASCULAR CATHETER}

The present invention relates to a 3WAY catheter device for blood vessels, and more specifically, a 3WAY catheter device for blood vessels that can be inserted into a blood vessel of a human body to more safely insert a catheter tube forming a blood injection or drug injection path into a blood vessel. It is about.

In general, when a fluid such as Ringer's fluid is injected into the human body for medical purposes, a fluid tube is connected while the injection needle is inserted into the blood vessel of the human body, and fluid is injected into the human body through the fluid tube and the injection needle Is done.

At this time, since the needle is metallic and has high strength and is very sharp, there is a problem in that the blood vessel is damaged or the patient feels pain when the patient moves incorrectly while the needle is inserted into the blood vessel.

To solve this problem, a socket in which a soft injection tube is installed, such as Korean Patent Publication No. 10-2004-0007850 (2004.01.28.), Korean Patent Registration No. 10-0843163 (2008.06.26.) A set of vascular catheters for injecting fluid through a member has been developed.

In this case, a guide member provided with a rigid guide needle is usually used to insert a soft tube into a blood vessel.

That is, after inserting the guide needle into the soft tube and inserting the soft tube along the guide needle into the blood vessel while being inserted into the blood vessel, the guide member is separated and removed from the socket member.

In this way, only the soft injection tube remains inserted into the patient's blood vessel, and when the fluid tube is connected to this, the fluid can be safely and conveniently injected into the patient.

However, the conventional blood vessel catheter as described above has a problem in that the patient's blood flows back through the socket member in the process of inserting the soft needle and the guide needle together into the blood vessel of the patient and then separating the guide needle from the socket member. .

In addition, the conventional blood vessel catheter is a configuration in which the guide needle is inserted into the blood vessel while the soft needle is inserted into the blood vessel while the guide needle is inserted into the blood vessel, and the guide needle is retracted and discharged from the blood vessel and the socket member.

That is, the conventional vascular catheter is configured to press the guide needle and the soft tube in opposite directions to each other, so there is a problem in that the guide needle is not stably separated and injuries due to excessive force of the user in this process.

In particular, since the guide needle is contaminated by the blood of the patient, an inadvertent accident of fatal infection may occur when the operator is stabbed by the guide needle in the process of separating the guide needle from the socket member.

Therefore, there is a need for a technology capable of solving the above problems.

Korean Patent Publication No. 10-2004-0007850 (2004.01.28.) Domestic registered patent No. 10-0843163 (2008.06.26.)

The present invention was created to improve the problems of the prior art as described above, and when the catheter tube is inserted into a blood vessel of the human body and forms a blood injection or drug injection path into a blood vessel and the needle is removed, blood flows backward. It is an object to provide a 3WAY catheter device for blood vessels that can be prevented from flowing out.

In addition, the present invention is to provide a 3WAY catheter device for blood vessels that can be separated from the catheter body by reversing the needle member while stably advancing the catheter body in the process of inserting the needle into the blood vessel and then inserting the catheter tube into the blood vessel. Purpose.

In addition, an object of the present invention is to provide a 3WAY catheter device for blood vessels that can confirm whether a needle is inserted into a blood vessel in the process of inserting the needle into a blood vessel.

The technical problems that can be obtained in the disclosed embodiments are not limited to the above-mentioned effects, and another technical problem that is not mentioned is a person having ordinary knowledge in the technical field to which the embodiments disclosed from the following description belong. Will be clearly understood.

A 3WAY catheter device for blood vessels according to an embodiment of the present invention for achieving the above object is formed in a tubular body and provides a catheter body that provides at least one route for blood collection or drug injection; A catheter tube extending in one direction of the catheter body in a state fixed to the catheter body and inserted into a blood vessel of the human body; While being detachably inserted into the catheter body, it protrudes to the distal end of the catheter tube, guides the catheter tube to be inserted into the blood vessel by being inserted into the blood vessel by the user, and then is separated from the catheter body by the user Needle member; A needle plug provided on the catheter body to shield the withdrawal path of the needle member while allowing the needle member to be withdrawn from the catheter body; An extension tube that is communicatively connected to the catheter body in a branched state from the withdrawal path of the needle member to form a movement path of blood or drugs; A 3WAY connection socket coupled to the end of the extension tube and provided with a plurality of connection ports for connecting a plurality of syringes to the end of the extension tube, respectively; A needleless connector detachably coupled to each of the connection ports of the 3WAY connection socket to allow the injection of a syringe without a needle, while allowing drug injection or blood collection by the syringe; And a socket protection cap selectively coupled to the needleless connector to each of the connection ports of the 3WAY connection socket to shield each of the connection ports of the 3WAY connection socket, wherein the needle member includes a tip end inside the catheter tube. Needle that is inserted into the blood vessel while protruding to; A needle hub coupled to the catheter body in a state fixed to the rear end of the needle and separated from the catheter body while linearly moving the catheter body through pressure by the user while providing a gripping portion for the user to press; And an insertion notification unit provided on the needle to inform the needle that the needle is being inserted into the blood vessel, wherein the needle hub includes a fitting unit fitted into the catheter body while being fixed to the needle; A gripping portion formed on one side of the fitting portion to provide a gripping portion of the user in a state protruding outward of the catheter body; And a needle ejector provided in the gripping part to discharge the fitting part from the catheter body while moving the catheter body in the blood vessel direction by a user's pressure. The needle ejector includes the fitting part and the gripping part. An inclined groove formed in a groove shape along the periphery of the boundary portion and having an inclined surface such that the width gradually narrows toward the center of the fitting portion; A pressing lever which is pressed by the user while the other end forms a free end in a state where one end is fixed to the gripping part; And it is formed on the other end of the pressing lever while forming a wedge shape corresponding to the inclined groove, is inserted along the inclined surface of the inclined groove by the user's pressure while opening the catheter body while opening between the catheter body and the fitting portion It may include a pressing wedge to move.

delete

In addition, the insertion notification unit may include at least one blood identification hole that is formed on the side of the needle and discharges a portion of blood drawn from the blood vessel to the side of the needle when the needle is inserted into the blood vessel.

delete

delete

In the 3WAY catheter device for blood vessels according to an embodiment of the present invention, the needle plug provided in the catheter body allows the needle to move while the needle is separated from the catheter body and then shields the needle withdrawal path, thereby removing the needle. Blood can be prevented from flowing out of the catheter body.

In addition, the present invention, the needle hub constituting the needle member advances the catheter body in the blood vessel direction by the user's pressure through the configuration of the needle ejector, while retracting the needle in the opposite direction, the catheter tube is stably inserted into the blood vessel while the needle blood vessel And it can be separated from the catheter body.

In addition, since the present invention is provided with a blood confirmation hole constituting the insertion notification portion in the needle to discharge a portion of the blood, it can be visually confirmed that the needle is inserted into the blood vessel.

The effects obtained in the disclosed embodiments are not limited to the above-mentioned effects, and other effects not mentioned are obvious to those skilled in the art to which the embodiments disclosed from the following description belong. Can be understood.

1 is a configuration diagram showing the configuration of a blood vessel 3WAY catheter device according to an embodiment of the present invention.
2 is a configuration diagram showing a state in which the needle member constituting the blood vessel 3WAY catheter device according to an embodiment of the present invention is separated.
3 is an enlarged view showing another embodiment of a needle hub constituting the needle member of the present invention.
4 is a configuration diagram showing the operating state of the needle hub constituting the needle member of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In describing the present invention, detailed descriptions of related well-known general-purpose functions or configurations will be omitted.

Embodiments according to the concept of the present invention can be applied to various changes and may have various forms, and thus, specific embodiments will be illustrated in the drawings and described in detail in the present specification or application. However, this is not intended to limit the embodiment according to the concept of the present invention to a specific disclosure form, and it should be understood to include all modifications, equivalents, or substitutes included in the spirit and scope of the present invention.

When an element is said to be "connected" or "connected" to another component, it is understood that other components may be directly connected to or connected to the other component, but there may be other components in between. It should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that no other component exists in the middle. Other expressions that describe the relationship between the components, such as "between" and "immediately between" or "neighboring" and "directly neighboring to" should be interpreted as well.

The terms used herein are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as “include” or “have” are intended to indicate that a feature, number, step, action, component, part, or combination thereof described is present, and one or more other features or numbers. It should be understood that it does not preclude the presence or addition possibilities of, steps, actions, components, parts or combinations thereof.

1 is a configuration diagram showing the configuration of a blood vessel 3WAY catheter device according to an embodiment of the present invention, Figure 2 is a needle member constituting the blood vessel 3WAY catheter device according to an embodiment of the present invention is a separated state It is a structure diagram shown. In addition, Figure 3 is a schematic view showing another embodiment of a needle hub constituting the needle member of the present invention, Figure 4 is a configuration diagram showing the operating state of the needle hub constituting the needle member of the present invention.

3WAY catheter device for blood vessels according to an embodiment of the present invention, as shown in Figures 1 and 2, the catheter body 100, catheter tube 200, needle member 300, needle plug 400, extension tube It may be configured to include a 500, 3WAY connection socket 600, a needleless connector 700 and a socket protection cap 800.

The catheter body 100 is a component that provides at least one path for injecting a drug or blood into a blood vessel.

Specifically, the catheter body 100 is formed in a tubular shape and branched in plural to provide a path for blood or drugs, and the catheter tube 200 and the needle member 300 and the extension tube 500 described later are combined. Can be.

The catheter tube 200 is a component that is used for blood collection, blood pressure monitoring, injection of drugs and angiographic agents, etc., while being inserted into a blood vessel of a human body for a predetermined period of time.

Specifically, the catheter tube 200 is formed of a soft tube and extends in one direction of the catheter body 100 in a state where one end in the longitudinal direction is fixed to the catheter body 100 to be communicatively connected to the catheter body 100. Can be.

The needle member 300 is a component that guides the catheter tube 200 to be inserted into the blood vessel while being inserted into the blood vessel. After the catheter body 200 is inserted into the blood vessel, the blood vessel and the catheter body 100 are inserted by the user. ).

Specifically, while the needle member 300 is detachably inserted into the catheter body 200 and protrudes to the distal end of the catheter tube 200, the needle member 300 is first inserted into the blood vessel by the user to guide the blood vessel insertion of the catheter tube 200. have.

2, the needle member 300 may include a needle 310, a needle hub 320, and an insertion notification unit 330 as shown in FIG. 2.

The needle 310 is inserted into the inside of the catheter tube 200 and protrudes to the distal end, and is inserted into a blood vessel. Unlike the catheter tube 200, it may be formed to be harder than the length of the catheter tube 200. .

The needle hub 320 is a component that provides a gripping portion for pressurization of the user in order to move the needle 310 back and forth by linear motion.

The needle hub 320 is detachably coupled to the rear end of the catheter body 100 in a state fixed to the rear end of the needle 310 while moving with the catheter body 100 to insert the needle 310 into the blood vessel It can be separated from the catheter body 100 through the reverse by the pressure of the user.

As shown in FIG. 2, the gripper 320a is attached to the needle hub 320 to provide a gripping portion by the user.

The insertion notification unit 330 is a component that enables confirmation of the above-described needle 310 inserted into the blood vessel.

That is, the insertion notification unit 330 may allow the user to visually check whether the needle 310 is correctly inserted into the blood vessel.

Specifically, the insertion notification unit 330 is formed on the side of the tee 310, as enlarged and extracted from FIG. 2, when the needle 310 is inserted into the blood vessel, a portion of the blood drawn from the blood vessel is needle 310 It may be configured to include a blood identification hole to discharge to the side.

That is, when the needle 310 is inserted into the blood vessel, the blood of the blood vessel is discharged to the needle 310 and a part of the blood is discharged into the blood confirmation hole constituting the insertion notification unit 330, so that the user can visually confirm.

The needle plug 400 allows the withdrawal of the needle 310 constituting the needle member 300 while shielding the withdrawal path of the catheter body 100 when the needle member 300 is separated from the catheter body 100 It is a component that prevents blood or drugs from leaking out of the catheter body 100.

The needle plug 400 is formed of a cushion material having elasticity, and may be inserted and disposed inside the catheter body 100, penetrated by the needle 310 constituting the needle member 300, and the needle 310 Can allow forward and backward movement.

In addition, the needle plug 400 can prevent the drug or blood inside the catheter body 100 from flowing out of the catheter body 100 by shielding the catheter body 100 after the needle 310 is withdrawn. have.

The extension tube 500 forms a movement path of blood or drugs after the catheter tube 200 is inserted into a blood vessel, and is capable of communicating with the catheter body 100 in a branched state from the withdrawal path of the needle member 300. Can be connected.

The extension tube 500 is made of a soft tube and can be extended to a predetermined length, and a clamp 500a is coupled to a portion to control the injection amount of the drug.

The 3WAY connection socket 600 is a component for providing a plurality of connection ports for connecting a plurality of syringes to the ends of the extension tube 500, respectively.

The 3WAY connection socket 600 is formed in a tubular form so as to connect a plurality of syringes, and one end of the both ends in the longitudinal direction can be coupled to the end of the extension tube 300, and a plurality of other ends of the both ends in the longitudinal direction. Branched conduits may be formed to provide a connection port of the syringe to each conduit.

The needleless connector 700 is selectively coupled to each of a plurality of connection ports of a 3WAY connection socket 600 together with a socket protection cap 800, which will be described later, to allow connection of a syringe without a needle, thereby injecting drugs by syringe. It is a component that enables blood collection.

The needleless connector 700 may be configured such that the cylinder of the syringe can be directly connected or disconnected, and a built-in check valve (not shown) prevents the chemical liquid or blood from being discharged while flowing backwards after the syringe is separated. Can be.

The socket protection cap 800 may be coupled to each of the connection ports of the needleless connector 700 and the optional 3WAY connection socket 600 as shown in FIG. 2 to shield the 3WAY connection socket 600.

The socket protection cap 800 may protect the 3WAY connection socket 600 from external contamination while being coupled to each of the connection ports of the 3WAY connection socket 600 by screwing or fitting.

On the other hand, the needle hub 320 constituting the above-described needle member 300 is configured to include a fitting portion 321, a gripping portion 322 and a needle ejector 323 as shown in Figures 3 and 4 Can be.

The fitting portion 321 is a component that forms a coupling portion with the catheter body 100, and is formed in a cross section corresponding to the inner circumferential surface of the catheter body 100 in a state fixed to the needle 310, of the catheter body 100 It can be fitted at the end.

In addition, the fitting portion 321 may be separated from the catheter body 321 while linearly moving in the opposite direction of the catheter body 321 by the user's pressure through the gripping portion 322 and the pressing portion 323, which will be described later. .

The gripping portion 322 is a component that provides a user's gripping portion, and is formed on one side of the fitting portion 321 to provide a user's gripping portion protruding outward of the catheter body 100.

Accordingly, the user can separate the fitting portion 321 from the catheter body 321 by pulling the gripping portion 322 outward of the catheter body 321 in a gripped state.

The needle ejector 323 moves the catheter tube 200 in the blood vessel direction by moving the fitting portion 321 in the blood vessel direction through the pressure of the user without pulling the gripping portion 322, and at the same time moves the fitting portion 321 into the catheter. It is a component that can be discharged from the body 100.

Specifically, the needle ejector 323 may be configured to include an inclined groove 323a, a pressure lever 323b, and a pressure wedge 323c as shown in FIGS. 3 and 4.

The inclined groove 323a is a component for moving the fitting portion 321 in a direction away from the catheter body 100 while being pressed by a pressing wedge 323c, which will be described later.

The inclined groove 323a may be formed in a groove shape along the periphery of the boundary between the fitting portion 321 and the gripping portion 322, as shown in FIG. 3, and toward the center of the fitting portion 321 Inclined surfaces may be provided to gradually narrow the width.

The pressing lever 323b is a component providing a pressing portion by a user, and having a predetermined length and one end in the longitudinal direction is fixed to the gripping portion 322, the other end can form a free end, and the free end When the other end constituting the moving in the direction of the inclined groove (323a) by the user's pressure or when the user's pressure is released may be separated from the inclined groove (323a).

The pressure wedge 323c is a component that moves the catheter body 100 in the blood vessel direction through the user's pressure, thereby moving the fitting portion 321 in the opposite direction of the catheter body 100.

Specifically, the pressing wedge 323c is formed at the other end of the pressing lever 323b while forming a wedge shape corresponding to the inclined groove 323a, and as shown in FIG. 4, the inclined groove 323a is pressed by the user. As it is inserted along the inclined surface of the catheter body 100 and the fitting portion 321, the catheter body 100 can be moved by opening the gap.

That is, while the pressing wedge 323c is pressed by the user, the user does not pull the fitting portion 321 by moving the fitting portion 321 in the opposite direction of the catheter body 100 while moving the catheter body 100 in the blood vessel direction. It can be stably separated from the catheter body 100 without.

Accordingly, the needle 310 can be separated from the blood vessel while stably moving in the opposite direction of the catheter body 100 with the needle hub 320 by the user's pressure through the pressure wedge 323c, and the catheter tube ( 200) can be inserted into the blood vessel while stably moving along the catheter body 100 in the blood vessel direction.

As described above, in the 3WAY catheter device for blood vessels according to an embodiment, the needle 310 allows the movement of the needle 310 while the needle plug 400 provided in the catheter body 100 allows the needle 310 to move to the catheter body 100 ) After being separated from the shielding path of the needle 310, the blood can be prevented from flowing out of the catheter body 100 in the process of removing the needle 310, and the needle hub 320 is needled. The catheter tube 200 is stably inserted into the blood vessel as the catheter tube 200 is stably inserted into the blood vessel while the catheter body 100 is advanced in the blood vessel direction by the user's pressure through the configuration of the ejector 323. It can be separated from the blood vessel and catheter body 100.

The above-described embodiments are for illustration only, and those having ordinary knowledge in the technical field to which the above-described embodiments belong can easily be modified into other specific forms without changing the technical idea or essential features of the above-described embodiments. You will understand. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope to be protected through the present specification is indicated by the claims, which will be described later, rather than the detailed description, and should be interpreted to include all modified or modified forms derived from the meaning and scope of the claims and equivalent concepts thereof. .

100: catheter body
200: catheter tube
300: needle member
310: Needle
320: Needle Hub
321: fitting part
322: gripping part
323: Needle ejector
323a: Inclined groove
323b: Pressurized lever
323c: press wedge
330: Insertion notification unit
400: Needle plug
500: extension tube
600: 3WAY connection socket
700: Needleless connector
800: socket protection cap

Claims (5)

A catheter body formed in a tubular form and providing at least one route for blood collection or drug injection;
A catheter tube extending in one direction of the catheter body in a state fixed to the catheter body and inserted into a blood vessel of the human body;
While being detachably inserted into the catheter body, it protrudes to the distal end of the catheter tube, guides the catheter tube to be inserted into the blood vessel by being inserted into the blood vessel by the user, and is then separated from the catheter body by the user. Needle member;
A needle plug provided on the catheter body to shield the withdrawal path of the needle member while allowing the needle member to be withdrawn from the catheter body;
An extension tube that is communicatively connected to the catheter body in a branched state from the withdrawal path of the needle member to form a movement path of blood or drugs;
A 3WAY connection socket coupled to the end of the extension tube and provided with a plurality of connection ports for connecting a plurality of syringes to the end of the extension tube, respectively;
A needleless connector detachably coupled to each of the connection ports of the 3WAY connection socket to allow the injection of blood or blood by the syringe while allowing connection of a syringe without a needle; And
It includes; a socket protection cap selectively coupled to the needleless connector to each of the connection ports of the 3WAY connection socket to shield each connection port of the 3WAY connection socket;
The needle member,
A needle inserted into a blood vessel while protruding toward the distal end of the catheter tube;
A needle hub coupled to the catheter body in a state fixed to the rear end of the needle and separated from the catheter body while linearly moving the catheter body through pressure by the user while providing a gripping portion for the user to press; And
Included in the needle is provided on the needle to inform the needle is inserted into the blood vessel; includes,
The needle hub,
A fitting part fitted into and coupled to the inside of the catheter body while being fixed to the needle;
A gripping portion formed on one side of the fitting portion to provide a gripping portion of the user in a state protruding outward of the catheter body; And
It includes a needle ejector provided in the gripping portion to discharge the fitting portion from the catheter body while moving the catheter body in the blood vessel direction by the user's pressure;
The needle ejector,
An inclined groove formed in a groove shape along the periphery of the boundary between the fitting portion and the gripping portion, and having an inclined surface such that the width gradually narrows toward the center of the fitting portion;
A pressing lever which is pressed by the user while the other end forms a free end while one end is fixed to the gripping part; And
It is formed on the other end of the pressing lever while forming a wedge shape corresponding to the inclined groove, and is inserted along the inclined surface of the inclined groove by the user's pressure to move the catheter body while opening the gap between the catheter body and the fitting portion. A 3WAY catheter device for blood vessels including a press wedge.
delete According to claim 1,
The insertion notification unit,
A 3WAY catheter device for blood vessels including at least one blood identification hole that is formed on the side of the needle and discharges a portion of blood drawn from the blood vessel to the side of the needle when the needle is inserted into the blood vessel.
delete delete

Images