WO2022220331A1

WO2022220331A1 - Intravenous tube catheter having blood backflow-prevention device installed in hub

Info

Publication number: WO2022220331A1
Application number: PCT/KR2021/007236
Authority: WO
Inventors: 주재욱; 주진환
Original assignee: 주재욱; 주진환
Priority date: 2021-04-12
Filing date: 2021-06-10
Publication date: 2022-10-20
Also published as: KR102257215B1

Abstract

The present invention relates to an intravenous tube catheter having a blood backflow-prevention device installed in a hub, wherein the catheter is designed to protect a surgeon and an operator from infection from viruses or other diseases due to the backflow of blood while inserted in a patient's body, and can be kept in place for three days. The intravenous tube catheter comprises: a catheter tube which guides the movement of a needle of a needle unit penetrating the skin, and is inserted into the skin penetrated by the needle; a catheter hub for supporting the catheter tube; a backflow-prevention unit which is installed inside the catheter hub so as to prevent the blood flowing into the catheter hub through the catheter tube from flowing back outside the catheter hub when the needle is separated from the catheter tube; and a magnetic valve unit which is formed of a magnetic material and installed on the catheter hub while facing the backflow-prevention unit, and opens and closes the backflow-prevention unit to prevent the blood from moving through the backflow-prevention unit.

Description

Intravenous tube catheter with blood backflow prevention device installed in the hub

The present invention relates to an intravenous tube catheter in which a blood backflow prevention device is installed in a hub, and more particularly, it can protect operators and practitioners from infection with viruses or other diseases caused by reflux of blood in a state of being injected or syringe inserted into a patient's body. It relates to an intravenous tube catheter with a blood backflow prevention device installed in a hub designed to protect and maintain intravenous infusion for 3 days.

According to a 2014 WHO survey, the re-use of general syringes is frequently occurring mainly in low-income countries such as poor countries and poor small and medium-sized countries.

Due to this, the fatal disease of patients is spreading, such as 33,800 people infected with HIV, 1.7 million people with hepatitis B virus, and 315,000 people with hepatitis C virus due to reuse of general syringes, and the risk is serious.

Furthermore, in the case of the Ebola virus, which is transmitted through blood contact, there is a fatal risk to the infected, such as a mortality rate of 50 to 90% during Ebola infection.

In addition, in the case of operators and practitioners who are exposed to various diseases, infection or prevalence is high due to needle needle (needle) of a syringe, and special attention is required because they are always exposed to the risk of infection by blood.

In the case of a conventional intravenous tube catheter, as shown in FIG. 1 1) a catheter 600 having a soft needle (610, also called 'zelco') and a hard stainless steel needle (510, aka medical perforation) After inserting the pre-lubricated needle with attached luer 500 with a needle (also referred to as a 'stylet') into the patient's venous blood vessel in a coupled state (FIG. 1 (a)), 2) Pre-lubricated needle - Separates only the lubricated needle with attached luer 500 from the catheter 600, 3) the ISO standard connector 710 and the rubber connector 720 connected to the IV set as shown in FIG. The combined structure is coupled to the catheter 600 to inject the treatment solution into the patient's vein.

However, when the pre-lubricated needle with attached luer 500 is separated from the catheter 600 , the patient's blood leaks through the catheter 600 , and an operator such as a doctor or nurse comes into contact with the leaked blood and infection occurs. There are problems that could be

On the other hand, the above-mentioned background art is technical information that the inventor possessed for the derivation of the present invention or acquired in the process of derivation of the present invention, and it cannot be said that it is necessarily a known technique disclosed to the general public before the filing of the present invention. .

One aspect of the present invention is to protect the operator and operator from infection of viruses or other diseases due to the reflux of blood in a state where the syringe and catheter are inserted into the patient's body, and at the same time to enable keeping for 3 days during intravenous injection. It is a basic task to provide an intravenous tube catheter with a blood backflow prevention device installed in a designed hub.

In addition, when injecting into a patient, operator or operator, the operator or operator does not need to remove the stylet in a hurry, so the possibility of being stabbed by a needle is fundamentally eliminated, so that it is another task to provide a safe needle (safety needle).

In addition, another task is to fundamentally block the possibility of secondary infection through the patient's blood even if there is a wound on the operator or the operator's body.

In addition, another task is to inject an intravenous fluid to the patient while the catheter is inserted into the patient's vein or to provide only the antibiotic for intravenous injection several times without the fluid injection.

In addition, while the catheter is inserted into the patient, it is another task to remove the fluid such as Ringer connected to the catheter and to provide it to go out.

In addition, it is another task to reduce the repeated operation time of the operator or the operator during the intravenous injection treatment in the hospital, and to reduce the material cost.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

The intravenous tube catheter in which the blood backflow prevention device is installed in the hub according to an embodiment of the present invention guides the movement of the needle, which is a stylet penetrating the skin, and at the same time, the catheter tube is inserted into the skin penetrated by the needle. ; a catheter hub supporting the catheter tube; a backflow prevention unit installed inside the catheter hub to prevent the blood flowing into the catheter hub through the catheter tube from flowing backward to the outside of the catheter hub when the needle is separated from the catheter tube; and a magnetic valve formed of a magnetic material and installed on the catheter hub while facing the backflow preventing part, and preventing the blood from moving through the backflow preventing part by opening and closing the backflow preventing part.

In one embodiment, the backflow prevention unit, the tube body is formed in a cylindrical shape corresponding to the shape of the inner space of the catheter hub is installed inside the catheter hub; a tube head gradually extending in a ladder shape from the front end of the tube body; And it may include a rigid adapter is inserted into the tube body.

In one embodiment, the inner diameter of the tube body may be formed to match the outer diameter of the connector for injection of the treatment fluid inserted into the length and width of the tube head in the shape of the ladder.

In one embodiment, the inner diameter of the tube body may be formed smaller than the outer diameter of the connector inserted into the inside.

In an embodiment, the tube body and the tube head may be formed of a rubber material having soft-melting elasticity.

In one embodiment, the magnetic valve unit, the first magnetic material is formed of a magnetic material forming a magnetic body facing the tube head and installed on one side of the catheter hub; and forming a symmetrical structure with the first magnetic body, and being installed on the other side of the catheter hub while facing the first magnetic body with the tube head interposed therebetween, the surface opposite to the first magnetic body is the first magnetic body It may include;

In one embodiment, the magnetic valve unit is in close contact with the first magnetic body and the second magnetic body with the tube head interposed therebetween by the attractive force formed between the first magnetic body and the second magnetic body, the inner side of the tube head Close the passage, overcome the attractive force formed between the first magnetic material and the second magnetic material, and the connector is inserted through the inner passage of the tube head. As the gap between the first magnetic material and the second magnetic material increases, the The tube head can be opened.

In one embodiment, the first magnetic body, a first magnet formed in the form of a disc and seated on one side of the catheter hub; and a second magnet formed in a disk shape having a smaller diameter than the first magnet and installed on one surface of the first magnet facing the tube head.

In an embodiment, the first magnet may be formed to have a diameter of 4 mm and a thickness of 0.5 mm.

In an embodiment, the second magnet may be formed to have a diameter of 3 mm and a thickness of 0.5 mm, and the first and second mounting holes may be formed to be slightly larger than a diameter of the first magnet.

In an embodiment, the first magnet and the second magnet may be formed of a permanent magnet.

In an embodiment, the first magnet may be installed such that 2/3 of the diameter faces the tube head, and the remaining 1/3 of the diameter is exposed to the front end of the tube head.

In one embodiment, the first magnetic body and the second magnetic body are in close contact with each other when closing the inner passage of the tube head to close the front inlet of the tube head, and then the tube head of each first magnet Each shear can be rotated to be closer to each other by 1/3 of the diameter exposed to the shear.

In an embodiment, the first magnetic material is a first installed around the first magnet and the second magnet in order to prevent rust from occurring in the first magnet and the second magnet by the moisture contained in the blood. It may further include an adhesive drape (Adhesive Drape).

In one embodiment, the catheter hub, the hub body is formed in a cylindrical shape and the backflow prevention part is installed on the inside; a first seating hole penetrating through one side of the hub body so that the first magnetic body can be seated; a second seating hole penetrating through the other side of the hub body so that the second magnetic body can be seated; and a catheter flange protruding outward along the outside of the rear end of the hub body.

In one embodiment, the catheter hub, a second adhesive drape (Adhesive Drape) installed to surround the outer surface of the hub body; may further include. A surface on which the second adhesive drape adheres to the first magnetic body may be configured to have no adhesiveness between the magnetic body and the second drape.

In one embodiment, the catheter hub is a magnet shielding foil installed around the outer surface of the second adhesive drape to block a magnetic field formed from the magnetic valve part (Magnet Shield, aka 'magnetic field shielding foil') '); may further include.

In an embodiment, the magnet shielding foil may wrap the outer surface of the second adhesive drape in one or two layers.

In an embodiment, the diameter of the first seating hole may be the same as the diameter of the first magnet or about greater than the diameter of the first magnet.

In one embodiment, the adapter is inserted and mounted in the catheter hub with an interference fit, and the front end diameter of the adapter is tapered smaller than the rear end diameter, or an angle of 6 degrees from the rear end diameter of the adapter to the front end diameter It may be configured to be tapered.

In one embodiment, the catheter flange may be configured to be equipped with a non-return cap or a heparin cap, and the non-return cap or the heparin cap is mounted on the catheter flange by rotating it at an angle of 90 degrees or 180 degrees forward and reverse for sealing. It can be configured to

In one embodiment, the backflow prevention cap may be configured to further include a rubber ring in the backflow prevention cap.

In one embodiment, the inner shape and inner size of the tube body and the adapter are formed to be the same as the outer shape and outer size of the connector, but the outer diameter of the connect and the tube body and the adapter are in close contact with each other so that the connector is detachable The adapter may be configured to be fixedly inserted within the catheter hub.

According to one aspect of the present invention described above, the catheter is not only prevented from leaking the patient's blood while the catheter is inserted into the patient's body, but also the catheter can be kept for 3 days, so that the operator, patient, beneficiary, etc. are all from various viruses and diseases. It has the effect of improving health by improving the stability of

In addition, it not only has the effect of fundamentally blocking the unknown wounds of the operator or bloodborne infectious diseases that can be spread by being pierced by a needle in the market, but also reduces the pain caused by the recovery of the syringe because it is unnecessary to retrieve the previously inserted syringe. and has a stress-reducing effect between the patient and the operator.

In addition, as it is manufactured in the same standard as the existing general commercial catheter, there is no difficulty in training, and it shortens the time required for intravenous injection and in various fields such as urology patients, joint patients, spinal patients, and chest patients. It can be used in hospitals, and it can provide effects such as reduction of manpower at the hospital site.

In addition, when injecting into a patient, operator, or operator, there is no need for the operator or operator to urgently remove the stylet, so there is no possibility of being stabbed by a needle, thereby providing a safe needle (safety needle).

In addition, there is an effect of injecting an intravenous fluid to the patient while the catheter is inserted into the patient's vein or injecting only the antibiotic several times intravenously without the fluid injection.

In addition, while the catheter is inserted into the patient, there is an effect of removing the fluid such as Ringer connected to the catheter and going out.

In addition, there is an effect of shortening the repeated operation time of the operator or the operator during intravenous injection treatment in the hospital, and reducing material costs.

The effects of the present invention are not limited to the above-mentioned effects, and various effects may be included within the range apparent to those skilled in the art from the description below.

1 is a view showing a method of using a conventional catheter.

FIG. 2 is a diagram showing a schematic configuration of an intravenous tube catheter in which a blood backflow prevention device is installed in a hub according to an embodiment of the present invention.

3 is a view showing a connection relationship between the catheter hub and the magnetic valve of FIG. 2 .

4 is a view showing the opening and closing of the backflow prevention unit by the magnetic valve unit of FIG. 2 .

FIG. 5 is a view showing a backflow preventing unit of FIG. 2 .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0014] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0016] Reference is made to the accompanying drawings, which show by way of illustration specific embodiments in which the present invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein with respect to one embodiment may be implemented in other embodiments without departing from the spirit and scope of the invention. In addition, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the present invention. Accordingly, the detailed description set forth below is not intended to be taken in a limiting sense, and the scope of the present invention, if properly described, is limited only by the appended claims, along with all scope equivalents to those claimed. Like reference numerals in the drawings refer to the same or similar functions throughout the various aspects.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.

Referring to FIG. 2 , the intravenous tube catheter 10 in which the blood backflow prevention device is installed in the hub according to an embodiment of the present invention includes a gelcoin catheter tube 100 , a catheter hub 200 , and a backflow prevention unit 300 . ) and a magnetic valve unit 400 .

The catheter tube 100 is formed in the form of a gelcoin soft (軟質, Soft-Melting) tube, and is a stylet of the needle unit 500, which is an ISO standard perforating needle that penetrates the skin through the inner space 110. While guiding the movement of the needle 510 (refer to FIG. 1), it is inserted into the skin penetrated by the needle 510, which is a stylet, and guides the treatment solution injected into the patient's vein into the vein, and the catheter hub 200 ) is supported by

The catheter hub 200 supports the catheter tube 100 and the backflow prevention part 300 is installed on the inside, so that the connector 710 of the infusion set of the ISO standard can be inserted. can

In one embodiment, the catheter hub 200 may include a hub body 210 , a first mounting hole 220 , a second mounting hole 230 , and a catheter flange 240 .

The hub body 210 is formed in an ISO standard cylindrical shape, the backflow prevention part 300 is installed in the inner space, and the first seating hole 220 and the second seating hole 230 on one side and the other side. this is formed

The first seating hole 220 is formed to pass through one side of the hub body 210 so that the first magnetic body 410 can be seated while facing the second seating hole 230 .

The second seating hole 230 is formed to pass through the other side of the hub body 210 so that the second magnetic body 420 can be seated while facing the first seating hole 220 .

The catheter flange 240 is formed to protrude outward along the outside of the rear end of the hub body 210 to prevent the connector 710 from being inserted to a certain depth or more.

The catheter hub 200 having the configuration as described above may further include a second adhesive drape 250 (Adhesive Drape) and a magnet shield 260 (Magnet Shield).

The second adhesive drape 250 is installed to surround the outer surface of the hub body 210 .

The magnetic shielding foil 260 (Magnet Shielding foil) blocks the magnetic field formed from the magnetic valve unit 400 so as to minimize or eliminate the influence of the magnetic field on medical equipment affected by the magnetic field, such as MRI. In order to do this, the second adhesive drape 250 is installed and wrapped around the outer surface.

In this case, the magnet shield 260 may wrap the outer surface of the second adhesive drape 250 in one or two layers.

The backflow preventing unit 300 may be configured to include a hard adapter 330 , and the adapter 330 may be inserted into the backflow preventing unit 300 made of an elastic rubber material. .

One end of the adapter 330 is configured to form a taper (in one embodiment, an angle of 6 degrees) at an angle corresponding to the inner diameter of the backflow prevention part 300 of the elastic rubber, and the other end of the adapter is the backflow prevention part It may be configured to form the adapter flange portion 340 identical to the outer diameter of 300 .

One end of the adapter 330 is configured to form a taper (in one embodiment, an angle of 6 degrees) at a predetermined angle corresponding to the inner diameter of the backflow prevention part 300 of the elastic rubber, and the other end of the adapter is the backflow prevention part 300 It may be configured to form the adapter flange portion 340 identical to the outer diameter of 300 .

The adapter 330 may be configured to be mounted with an interference fit into the catheter hub 200 . Due to this, the adapter 320 is not artificially separated from the catheter hub 200 .

Backflow prevention unit 300, when the gel coin needle 610 is separated from the catheter tube 100, the blood flowing into the catheter hub 200 through the catheter tube 100 backflow to the outside of the catheter hub 200 It is installed inside the catheter hub 200 to prevent leakage, and the inlet formed at the front end of the backflow prevention part 300 is opened and closed by the magnetic valve part 400 to be described later.

The magnetic valve unit 400 is formed of a material that forms magnetism (eg, a permanent magnet, etc.) and is installed in the catheter hub 200 while facing the backflow prevention part 300 , and the backflow prevention part 300 is installed in the catheter hub 200 . It opens and closes to prevent backflow of blood to the outside through the backflow prevention unit 300 .

In an embodiment, the magnetic valve unit 400 may include a first magnetic body 410 and a second magnetic body 420 .

The first magnetic body 410 forms a symmetrical structure with the second magnetic body 420, is formed of a magnetic material, and faces the tube head 320 (see FIG. 5) while facing one side of the catheter hub 200, That is, it is mounted and installed in the first mounting hole 220 .

The second magnetic body 420 forms a symmetrical structure with the first magnetic body 410 and faces the first magnetic body 410 with the tube head 320 interposed therebetween and the other side of the catheter hub 200, that is, the second 2 is seated and installed in the mounting hole 230 , and a surface opposite to the first magnetic material 410 is formed of a material that forms a magnetism having a polarity opposite to that of the opposite surface of the first magnetic material 410 .

On the other hand, a heparin cap (reference numeral not shown) is inserted into the catheter flange 240 formed at the rear end of the catheter hub 200 by 90 degrees to 180 degrees forward and reverse rotation so that the heparin cap can be detachably configured. For this reason, antibiotics, cell lines, etc. injections can be injected into the patient's body into the heparin cap (not shown) mounted on the catheter flange 240 .

A method of using the intravenous tube catheter 10 in which the blood backflow prevention device is installed in the hub according to an embodiment of the present invention having the configuration as described above is as follows.

1) First, a Pre-lubricated needle with attached luer 500 having a hard stainless steel needle 510 is inserted into the venous blood vessel of the patient while the catheter tube 100 and the catheter hub 200 are coupled, 2 ) The pre-lubricated needle with attached luer only separates the 500, 3) At this time, the tube head 320 of the backflow prevention unit 300 is blocked by the magnetic valve unit 400 so that blood flows into the catheter hub 200 The leakage to the outside is blocked, 4) the structure in which the ISO standard connector 710 and the rubber connector 720 are combined is inserted to the end of the backflow prevention part 300, 5) the connector 710 is inserted The treatment liquid is injected into the patient's vein using the Again, the backflow prevention unit 300 is blocked by the magnetic valve unit 400 to prevent the blood from leaking to the outside of the catheter hub 200 8) Next, a connector 710 and a rubber of another ISO standard Another treatment fluid is injected into the patient's vein using the connector 720 coupled structure. 9) In general, heparin cap or anti-reflux cap (not shown) is used when only antibiotics are given without an infusion prescription, or when all the prescribed fluids are received today, or when the patient goes out. For example, by inserting a heparin cap into the catheter flange 240, it is possible to double prevent the patient's blood from refluxing and leaking. can Here, when a heparin cap is used, a rubber sealing member (not shown) may be further included to prevent blood leakage inside the catheter hub.

As a result, the flow of blood is blocked by the connector 710 and the magnetic valve unit 400 that functions as a check valve.

The intravenous tube catheter 10 in which the blood backflow prevention device is installed in the hub according to an embodiment of the present invention having the configuration as described above can be kept for 3 days while being inserted into the patient's body, so that various viruses and It can improve health by improving the safety of all operators, patients, and beneficiaries from disease, and prevent infection due to blood leakage by preventing blood leakage from the catheter. There is no difficulty in using training, and it shortens the time required for intravenous injection and can be used in various fields, so it can provide effects such as reduction of operator and operator's work stress and reduction of manpower in the workplace.

Referring to FIG. 3 , the first magnetic body 410 includes a first magnet 411 and a second magnet 412 .

Here, the second magnetic body 420 is a configuration that forms a symmetrical structure with the first magnetic body 410, which will be described later, and includes the first magnet 411 and the second magnet 412 of the first magnetic body 410. As can be equally applied, the description will be omitted to avoid duplication of description.

The first magnet 411 is formed in the form of a disk and is installed on one side of the catheter hub 200 , that is, the first seating hole 220 , and the second magnet 412 is installed on one surface.

In this case, the first and second seating holes may be formed to be slightly larger than the diameter of the first magnet, and the first magnet may be configured to be larger than the diameter of the second magnet.

In this case, the diameter of the first mounting hole 220 may be the same as the diameter of the first magnet 411 so that the first magnet 411 can be seated.

In an embodiment, the first magnet 411 may be formed to have a diameter of 4 mm and a thickness of 0.5 mm.

The second magnet 412 is formed in a disk shape having a smaller diameter than the first magnet 411 and is installed on one surface of the first magnet 411 facing the tube head 320 .

In an embodiment, the second magnet 412 may be formed to have a diameter of 3 mm, which is smaller than that of the first magnet 411 , and a thickness of 0.5 mm.

In an embodiment, the first magnet 411 and the second magnet 412 may be formed of a permanent magnet.

In one embodiment, the front end of the tube head 320 may be configured to remain normally closed.

Here, the first magnet 411 may be installed such that 2/3 of the diameter faces the tube head 320 , and the remaining 1/3 of the diameter is exposed to the front end of the tube head 320 .

Accordingly, in the state in which the inner passage of the tube head 320 is closed, the first magnetic body 410 and the second magnetic body 420 are in close contact with each other to further strengthen the state in which the front end inlet of the tube head 320 is closed. Prevents the front end of the tube head 320 from being opened due to the pressure increase of Each front end can be rotated to be close to each other by 3 (in the case of (b) of FIG. 4).

The first magnetic material 410 having the above-described configuration may further include a first adhesive drape 413 (Adhesive Drape).

The first adhesive drape 413 (Adhesive Drape) is separated from the first seating hole 220 while preventing rust from occurring in the first magnet 411 and the second magnet 412 due to moisture contained in blood. The first magnet 411 and the second magnet 412 are wrapped around and installed in order to prevent it from happening.

The magnetic valve unit 400 having the configuration as described above, the first magnetic body 410 and the second magnetic body 420 by the attractive force formed between the first magnetic body 410 and the second magnetic body 420 is a tube Close the inner passage of the tube head 320 with the head 320 interposed therebetween (FIG. 4 (b)), overcome the attractive force formed between the first magnetic body 410 and the second magnetic body 420, and As the connector 710 is inserted through the inner passage of the tube head 320 and the gap between the first magnetic body 410 and the second magnetic body 420 is widened, the tube head 320 may be opened (FIG. 4). of (a)).

FIG. 5 is a view showing a backflow preventing unit of FIG. 2 .

Referring to FIG. 5 , the backflow prevention unit 300 includes a tube body 310 , a tube head 320 and an adapter 330 , and the rear end of the adapter 330 may constitute an adapter flange 340 . have. Here, the backflow prevention unit 300 may be inserted and mounted with an interference fit in the catheter hub 200, and the backflow prevention unit 300 may be configured to be artificially difficult to attach and detach from the catheter hub 200. Also, the adapter ( The ISO standard connector 710 may be inserted into the 330 .

The adapter may be tapered at an angle of 6 degrees from the rear end diameter to the front end diameter of the adapter, the catheter flange may be configured to be equipped with a backflow prevention cap or a heparin cap, and the backflow prevention cap or the heparin cap may be the catheter flange It is configured to be mounted and sealed by rotating forward and reverse at an angle of 90 degrees or 180 degrees, and the anti-return cap further includes a rubber ring in the anti-return cap.

In addition, the inner shape and inner size of the tube body and the adapter are formed to be the same as the outer shape and outer size of the connector. The adapter may be configured to be fixedly inserted within.

The tube body 310 is formed in a cylindrical shape corresponding to the shape of the inner space of the catheter hub 200 and is installed inside the catheter hub 200, and the tube head 320 is formed at the front end.

The tube head 320 is formed to extend from the front end of the tube body 310 in the form of a ladder.

In one embodiment, the inner diameter of the tube body 310 may be formed to be the same as the outer diameter of the connector 710 for injection of the treatment liquid of the tube head (320).

In one embodiment, the inner diameter of the tube body 310 may be formed to be smaller than the outer diameter of the connector 710 inserted inwardly so that the connector 710 inserted therein can be inserted in close contact.

In an embodiment, the tube body 310 and the tube head 320 may be formed of a rubber material having soft-melting elasticity.

The above-described embodiments are for illustration, and those of ordinary skill in the art to which the above-described embodiments pertain can easily transform 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 dispersed form, and likewise components described as distributed may be implemented in a combined form.

The scope to be protected through this specification is indicated by the claims described below rather than the above detailed description, and should be construed to include all changes or modifications derived from the meaning and scope of the claims and their equivalents. .

The present invention not only prevents the blood leakage of the patient while the catheter is inserted into the patient's body, but also provides the safety of the operator and the patient from various viruses and diseases by keeping the catheter for 3 days. It is an invention that has industrial applicability because it has sufficient commercial and commercial potential in the market applied to catheters with syringes in general hospitals in a new way that goes beyond that and can be practically and clearly implemented.

Claims

a catheter tube inserted into the skin penetrated by the needle while guiding the movement of the needle of the needle unit penetrating the skin;

a catheter hub supporting the catheter tube;

a backflow prevention unit installed inside the catheter hub to prevent the blood flowing into the catheter hub through the catheter tube from flowing backward to the outside of the catheter hub when the needle is separated from the catheter tube; and

A magnetic valve formed of a material that forms magnetism and is installed on the catheter hub while facing the backflow prevention part, and opens and closes the backflow prevention part to prevent blood from moving through the backflow prevention part; Intravenous tube catheter with anti-reflux device.
The method of claim 1, wherein the backflow prevention unit,

a tube body formed in a cylindrical shape corresponding to the shape of the inner space of the catheter hub and installed inside the catheter hub;

a tube head formed in a ladder shape from the front end of the tube body; and an intravenous tube catheter having a blood backflow prevention device installed in the hub, in which a hard adapter is inserted into the tube body.
According to claim 2, wherein the inner diameter of the tube body,

An intravenous tube catheter in which a blood backflow prevention device is installed in a hub, which is formed in close contact with or the same as the outer diameter of a connector for injection of a treatment solution inserted into the length and width of the tube head.
According to claim 2, wherein the inner diameter of the adapter inserted into the tube body,

An intravenous tube catheter in which a blood backflow prevention device is installed in the hub, which is formed to be smaller than or equal to the outer diameter of the connector inserted into the inside.
According to claim 2, wherein the tube body and the tube head,

An intravenous tube catheter with a blood backflow prevention device installed in the hub, formed of a soft-melting rubber material.
The method of claim 2, wherein the magnetic valve unit,

a first magnetic material formed of a material forming a magnet and installed on one side of the catheter hub while facing the tube head; and

It forms a symmetrical structure with the first magnetic body, and is installed on the other side of the catheter hub while facing the first magnetic body with the tube head interposed therebetween, wherein the surface opposite to the first magnetic body faces the first magnetic body A second magnetic material formed of a material that forms a magnetic polarity opposite to that of the surface; including, a blood backflow prevention device installed in a hub, an intravenous tube catheter.
The method of claim 6, wherein the magnetic valve unit,

The first magnetic body and the second magnetic body are in close contact with the tube head interposed therebetween by the attractive force formed between the first magnetic body and the second magnetic body to close the inner passage of the tube head, and the first magnetic body and the first magnetic body and the second magnetic body Overcoming the attractive force formed between the second magnetic body and the connector is inserted through the inner passage of the adapter of the tube head to open the tube head as the gap between the first magnetic body and the second magnetic body is widened, in the hub Intravenous tube catheter with anti-reflux device.
According to claim 6, The first magnetic body,

a first magnet formed in a disk shape and seated on one side of the catheter hub; and

A second magnet formed in the form of a disk having a smaller diameter than the first magnet and installed on one side of the first magnet opposite to the tube head; Containing, a blood backflow prevention device installed in a hub for intravenous tube catheter.
The method of claim 6, wherein the first and second magnet diameters of the first magnetic body and the second magnetic body are formed so that the diameter of the first magnet is larger than the diameter of the second magnet.

An intravenous tube catheter with a blood backflow prevention device installed in the hub.
The method of claim 8, wherein the first magnet,

An intravenous tube catheter with a diameter of 4 mm and a thickness of 0.5 mm with a blood backflow prevention device installed in the hub.
The method of claim 8, wherein the second magnet,

An intravenous tube catheter with a blood backflow prevention device installed in the hub, which is formed with a diameter of 3 mm and a thickness of 0.5 mm.
The method of claim 8, wherein the first magnet and the second magnet,

An intravenous tube catheter with a blood backflow prevention device installed in the hub, formed of a permanent magnet.
The method of claim 8, wherein the first magnet,

An intravenous tube catheter in which a blood backflow prevention device is installed in the hub, wherein 2/3 of the diameter is opposite to the tube head, and the remaining 1/3 of the diameter is exposed to the front end of the tube head.
The method of claim 13, wherein the first magnetic body and the second magnetic body,

When the inner passage of the tube head is closed, the front ends of each first magnet are in close contact with each other to close the front end entrance of the tube head, and then the front ends of each first magnet are exposed to each other by 1/3 of the diameter exposed to the front end of the tube head. An intravenous tube catheter with a blood backflow prevention device installed in the hub, which is rotated closer.
According to claim 8, wherein the first magnetic body,

A first adhesive drape installed around the first magnet and the second magnet to prevent rust from occurring in the first magnet and the second magnet by the moisture contained in the blood (Adhesive Drape) further comprising; , An intravenous tube catheter with a blood backflow prevention device installed in the hub.
16. The method of claim 15, wherein the catheter hub,

a hub body formed in a cylindrical shape and having the backflow prevention part installed therein;

a first seating hole penetrating through one side of the hub body so that the first magnetic body can be seated;

a second seating hole penetrating through the other side of the hub body so that the second magnetic body can be seated; and

A catheter for vein tube in which a blood backflow prevention device is installed in the hub, including; a catheter flange protruding outward along the rear end of the hub body.
17. The method of claim 16, wherein the catheter hub,

A second adhesive drape (Adhesive Drape) installed to surround the outer surface of the hub body; further comprising, a blood backflow prevention device installed in the hub catheter for veins.
18. The method of claim 17, wherein the catheter hub,

In order to block a magnetic field formed from the magnetic valve part, a magnet shield installed to surround the outer surface of the second adhesive drape and installed; tube catheter.
19. The method of claim 18, wherein the magnetic shield,

An intravenous tube catheter with a blood backflow prevention device installed in the hub, which wraps the outer surface of the second adhesive drape in one or two layers.
The method of claim 16, wherein the diameter of the first seating hole is,

An intravenous tube catheter in which a blood backflow prevention device is installed in the hub, which is formed to be the same as the diameter of the first magnet.
According to claim 2, wherein the adapter,

An intravenous tube catheter in which a blood backflow prevention device is installed in the hub, which is formed by being inserted and mounted in the catheter hub by an interference fit.
The method of claim 21, wherein the adapter,

The adapter is, The front-end diameter of the adapter is formed to be tapered smaller than the rear-end diameter, a blood backflow prevention device is installed in the hub for an intravenous tube catheter.
23. The method of claim 22, wherein the adapter,

An intravenous tube catheter in which a blood backflow prevention device is installed in the hub, which is formed to be tapered at an angle of 6 degrees from the diameter of the front end to the diameter of the rear end of the adapter.
17. The method of claim 16, wherein the catheter flange,

An intravenous tube catheter with an anti-reflux device in the hub fitted with a non-reflux cap or a heparin cap.
The method of claim 24, wherein the non-return cap or the heparin cap comprises:

An intravenous tube catheter with a blood backflow prevention device installed in a hub, which is mounted and sealed by rotating the catheter flange at an angle of 90 to 180 degrees.
The method of claim 25, wherein the non-return cap comprises:

An intravenous tube catheter in which a blood backflow prevention device is installed in the hub, further comprising a rubber ring in the non-return cap.
The method according to claim 3, wherein the inner shape and inner size of the tube body and the adapter are:

The external shape and the external size of the connector are the same, but the external diameter of the connector and the tube body and the adapter are closely adhered to each other so that the adapter is fixedly inserted in the catheter hub when the connector is detached. Intravenous tube catheter with anti-reflux device.