KR102257215B1 - Intravenous tube catheter equipped with a blood reflux preventing - Google Patents

Abstract

The present invention relates to an intravenous tube catheter equipped with a blood backflow prevention device in a hub, which is designed to protect an operator and an implementer from infection with viruses or other diseases due to the backflow of blood while being inserted into a patient's body and to be kept for three days. The intravenous tube catheter comprises: a catheter tube inserted into the skin penetrated by a needle while guiding the movement of the needle of a 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 unit formed of a material that forms magnetism and installed on the catheter hub while facing the backflow prevention unit, and opening and closing the backflow prevention unit to prevent the blood from moving through the backflow prevention unit.

Description

Intravenous tube catheter equipped with a blood reflux prevention device in the hub {INTRAVENOUS TUBE CATHETER EQUIPPED WITH A BLOOD REFLUX PREVENTING}

The present invention relates to an intravenous tube catheter equipped with a blood reflux prevention device in a hub, and more particularly, to a practitioner and a practitioner from infection of a virus or other disease caused by the backflow of blood in a state in which an injection or syringe is inserted into the body of a patient. It relates to an intravenous tube catheter equipped with a blood reflux prevention device in a hub designed to protect and maintain intravenous injection for 3 days.

According to a 2014 WHO survey, general injectors are frequently reused in low-income people, such as poor countries and small and medium-sized countries.

Due to this, a fatal disease of patients is spreading, and the risk is in a serious state, including 33,800 HIV infection, 1.7 million hepatitis B virus, and 315,000 hepatitis C virus infection due to reuse of general syringes.

Moreover, in the case of the Ebola virus, which is infected through blood contact, there is a fatal risk to the infected person, such as 50-90% mortality when infected with Ebola.

In addition, in the case of practitioners and practitioners who are exposed to various diseases, the infection or prevalence rate is high due to being punctured by the 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 referred to as'zelco') and a hard stainless steel needle 510 (aka medical perforation) A pre-lubricated needle with attached luer 500 equipped with an acupuncture needle (also referred to as'stylet') is inserted into the patient's venous blood vessel in an attached state (Fig. 1 (a)), and 2) Pre -Separating only the lubricated needle with attached luer 500 from the catheter 600, and 3) an ISO standard connector 710 and a rubber connector 720 connected to the infusion solution set as shown in FIG. 1(b) 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 is leaked through the catheter 600, so that an implementer such as a doctor or nurse comes into contact with the leaked blood, causing infection. It has a problem that can be.

On the other hand, the above-described background technology is technical information that the inventor possessed for derivation of the present invention or acquired during the derivation process of the present invention, and is not necessarily known to be known to the general public prior to filing the present invention. .

Korean Patent Registration No. 10-2178102

One aspect of the present invention is to protect the operator and the operator from infection of viruses or other diseases caused by backflow of blood while 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. The basic task is to provide an intravenous tube catheter equipped with a blood reflux prevention device in the designed hub.

In addition, in the case of injection to a patient, a practitioner, or a practitioner, the practitioner or practitioner does not need to urgently remove the stylet, so the possibility of being stabbed by the needle is fundamentally eliminated, making it another task to provide a safety needle.

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

In addition, another task is to provide an intravenous injection of antibiotics several times without injecting fluid to the patient or without intravenous infusion while a catheter is inserted into the patient's vein.

In addition, it is another object to provide a patient with a catheter inserted in a state in which fluids such as Ringer or the like connected to the catheter can be removed and allowed to go out.

In addition, in the case of intravenous treatment in a hospital, it is another task to shorten the repetitive treatment time of the operator or implementer, and to reduce material costs.

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

A tube catheter for veins equipped with a blood reflux prevention device in a hub according to an embodiment of the present invention guides the movement of a needle, which is a stylet penetrating the skin, and at the same time, a catheter tube inserted into the skin penetrated by the needle. ; A catheter hub supporting the catheter tube; When the needle is separated from the catheter tube, a backflow prevention part installed inside the catheter hub to prevent the blood flowing into the catheter hub through the catheter tube from flowing back to the outside of the catheter hub; And a magnetic valve part formed of a material forming magnetism and installed on the catheter hub while facing the backflow prevention part, and opening and closing the backflow prevention part to prevent blood from moving through the backflow prevention part.

In one embodiment, 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 gradually extending in a ladder shape from a front end of the tube body; And a hard adapter inserted into the tube body.

In one embodiment, the inner diameter of the tube body may be formed in accordance with the length and width of the ladder-shaped tube head and the outer diameter of the connector for injection of the treatment fluid inserted inward.

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

In one 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 includes: a first magnetic body formed of a material forming magnetism and installed on one side of the catheter hub while facing the tube head; And a symmetrical structure with the first magnetic body, and installed on the other side of the catheter hub while facing the first magnetic body with the tube head interposed therebetween, and a surface facing the first magnetic body is It may include; a second magnetic material formed of a material that forms magnetism having a polarity opposite to that of the opposite surface.

In one embodiment, the magnetic valve unit is in close contact with the first magnetic body and the second magnetic body through the tube head by an attractive force formed between the first magnetic body and the second magnetic body, so that the inner side of the tube head Closing the passage, overcoming the attractive force formed between the first magnetic body and the second magnetic body, and the connector is inserted through the inner passage of the tube head to increase the gap between the first magnetic body and the second magnetic body. The tube head can be opened.

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

In one embodiment, the first magnet may have a diameter of 4 mm and a thickness of 0.5 mm.

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

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

In one 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 end inlet of the tube head, and then the tube head of each of the first magnets Each shear can be rotated to get closer to each other by 1/3 of the diameter exposed by the shear.

In one embodiment, the first magnetic body is installed to surround the first magnet and the second magnet to prevent rust from being generated in the first magnet and the second magnet by moisture contained in blood. It may further include an adhesive drape;

In an embodiment, the catheter hub includes: a hub body formed in a cylindrical shape and in which the backflow prevention part is installed; A first seating hole formed through one side of the hub body so that the first magnetic body can be seated; A second seating hole formed through the other side of the hub body so that the second magnetic body can be seated; And a catheter flange protruding outwardly along the rear end of the hub body.

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

In one embodiment, the catheter hub is a magnetic shielding foil (Magnet Shield, also known as'magnetic field shielding foil) that is installed by wrapping the outer surface of the second adhesive drape to block a magnetic field formed from the magnetic valve portion. Also referred to as'); may further include.

In one embodiment, the magnet shielding foil may wrap one or two outer surfaces of the second adhesive drape.

In one embodiment, a diameter of the first mounting hole may be formed equal to or larger than a diameter of the first magnet.

In one embodiment, the adapter is formed by being inserted into the catheter hub by force fit, and the shear diameter of the adapter is tapered smaller than the rear end diameter or at an angle of 6 degrees from the rear end diameter of the adapter to the shear diameter. It may be configured to be tapered.

In one embodiment, 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 is mounted to the catheter flange by rotating it forward and backward at an angle of 90 degrees or 180 degrees to seal Can be configured.

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 the outer size of the connector, but the connector is attached and detached in close contact between the outer diameter of the connector and the tube body and the adapter. It may be configured such that the adapter is fixedly inserted in the catheter hub.

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

In addition, it has the effect of fundamentally blocking the operator's unknown wounds or bloodborne infectious diseases that can be transmitted by being pierced by a needle on the market, as well as reducing the pain caused by the collection of syringes because the collection of previously inserted syringes is unnecessary. It has the effect of reducing stress 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 using it, and it shortens the time required for the procedure for intravenous injection, and in various fields such as urinary urine patients, joint patients, spinal patients, and thoracic patients. It can be used for, and can provide effects such as reduction of manpower at the hospital site.

In addition, when injecting to a patient, a practitioner, or a practitioner, the practitioner or practitioner does not need to remove the stylet in a hurry, so there is no possibility of being stabbed by a needle, thus providing a safe needle.

In addition, there is an effect of injecting fluid into the patient while the catheter is inserted into the patient's vein or injecting antibiotics alone several times intravenously without infusion.

In addition, it has the effect of removing fluids such as Ringer connected to the catheter and going out while the catheter is inserted into the patient.

In addition, there is an effect of shortening the repetitive treatment time of the operator or implementer during intravenous treatment in a 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 a range that is apparent to a person skilled in the art from the contents to be described below.

1 is a diagram showing a method of using a conventional catheter.
2 is a view showing a schematic configuration of a tube catheter for veins in which a blood reflux 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 of FIG. 2 and the magnetic valve unit.
4 is a view showing the opening and closing of the backflow prevention part by the magnetic valve part of FIG. 2.
5 is a view showing the backflow prevention unit of FIG. 2.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The detailed description of the present invention described below refers to the accompanying drawings, which illustrate specific embodiments in which the present invention may be practiced. These embodiments are described in detail sufficient to enable a person skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different from each other, but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the present invention in connection with one embodiment. 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 to be described below is not intended to be taken in a limiting sense, and the scope of the present invention, if appropriately described, is limited only by the appended claims, along with all ranges equivalent to those claimed by the claims. Like reference numerals in the drawings refer to the same or similar functions over several aspects.

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

2 is a view showing a schematic configuration of a tube catheter for veins in which a blood reflux prevention device is installed in a hub according to an embodiment of the present invention.

Referring to Figure 2, the tube catheter 10 for veins in which the blood reflux prevention device is installed in the hub according to an embodiment of the present invention, a gel coin catheter tube 100, a catheter hub 200, a reflux prevention unit 300 ) And a magnetic valve part 400.

The catheter tube 100 is formed in the form of a gel coin soft-melting tube, and is a stylet of the needle unit 500, which is an ISO standard perforation 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 liquid into the vein of the patient into the vein, and the catheter hub 200 ) Supported by

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

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

The hub body 210 is formed in a cylindrical shape of an ISO standard and has a backflow prevention part 300 installed in the inner space, and a first seating hole 220 and a second seating hole 230 on one side and the other side. 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 may be seated while facing the first seating hole 220.

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

The catheter hub 200 having the above-described configuration may further include a second adhesive drape 250 and a magnet shield 260.

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

The magnet shielding foil 260 blocks the magnetic field formed from the magnetic valve part 400 so that the influence of the magnetic field on medical equipment affected by magnetic fields such as MRI can be minimized or extinguished. To do this, it is installed to surround the outer surface of the second adhesive drape 250.

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 prevention part 300 may be configured to include a hard adapter 330, and the adapter 330 may be inserted into the backflow prevention part 300 made of a rubber material having elasticity. .

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

The adapter 330 may be configured to be forcibly fitted into the catheter hub 200. Due to this, the adapter 320 is not artificially separated from the catheter hub 200.

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

The magnetic valve part 400 is formed of a material that forms magnetism (eg, a permanent magnet, etc.) and is installed on the catheter hub 200 while facing the backflow prevention part 300, and the backflow prevention part 300 Opening and closing prevents the blood from flowing back to the outside through the backflow prevention unit 300.

In one 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 material that forms magnetism, and faces the tube head 320 (see FIG. 5) while facing one side of the catheter hub 200, That is, it is seated and installed in the first seating 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, while the other side of the catheter hub 200, that is, the first 2 Doedoe installed in the mounting hole 230, the surface facing the first magnetic body 410 is formed of a material that forms a magnetism having a polarity opposite to that of the first magnetic body 410.

On the other hand, the heparin cap (not shown in the drawing) is inserted into the catheter flange 240 formed at the rear end of the catheter hub 200 by inserting the heparin cap (not shown in the drawing) into a 90 degree to 180 degree forward/reverse seeker, so that the heparin cap can be detached. For this reason, the heparin cap (not shown) mounted on the catheter flange 240 can be injected into the patient's body such as antibiotics and cell lines.

A method of using the intravenous tube catheter 10 in which the blood reflux 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 attached to the catheter tube 100 and the catheter hub 200, and is inserted into the venous blood vessel of the patient, 2 ) Only the pre-lubricated needle with attached luer 500 is separated, and 3) At this time, the tube head 320 of the backflow prevention part 300 is blocked by the magnetic valve part 400 so that blood is transferred to the catheter hub 200 Leakage to the outside is blocked, and 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, and 5) the connector 710 is inserted. The treatment solution is injected into the patient's vein by using, 6) When the injection of the treatment solution is completed, the structure in which the connector 710 and the rubber connector 720 are combined is separated from the catheter hub 200, 7) The backflow prevention part 300 is again blocked by the magnetic valve part 400 to prevent blood from leaking to the outside of the catheter hub 200. 8) Next, another ISO standard connector 710 and rubber Another treatment solution is injected into the patient's vein by using the structure to which the connector 720 is coupled. 9) In general, a heparin cap or a reflux cap (not shown in the drawing) is used when only antibiotics are taken without an infusion prescription, or when all of the fluids prescribed today are finished, or when the patient goes out, other implementations of the present invention For example, by inserting and installing a heparin cap on the catheter flange 240, it is possible to double prevent leakage of the patient's blood due to reflux, and also to inject antibiotics or treatment solutions such as cell lines several times into the rear end of the heparin cap. I can. Here, when the heparin cap is used, a rubber sealing member (not shown) may be further included to prevent leakage of blood 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 equipped with a blood reflux prevention device 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 is possible to improve health by improving the safety of all operators, patients, beneficiaries, etc. from diseases, and to prevent infection due to blood leakage by preventing blood leakage from the catheter, and as it is manufactured in the same standard as the existing general commercial catheter. Not only does it have no difficulty in use training, it shortens the time required for intravenous injections and can be used in various fields, thereby providing effects such as reduction of work stress of operators and implementers and reduction of manpower at work sites.

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

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 to be described later, and configurations such as the first magnet 411 and the second magnet 412 of the first magnetic body 410 The description will be omitted in order to avoid duplication of description as it can be applied equally.

The first magnet 411 is formed in the shape of a disk and is mounted on one side of the catheter hub 200, that is, the first mounting 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.

At this time, the diameter of the first seating hole 220 may be formed equal to the diameter of the first magnet 411 so that the first magnet 411 can be seated.

In one embodiment, the first magnet 411 may be formed in a standard having a diameter of 4 mm and a thickness of 0.5 mm.

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

In one embodiment, the second magnet 412 may be formed in a standard having a diameter of 3 mm, which is smaller than the first magnet 411, and a thickness of 0.5 mm.

In one 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 be in a normally closed state.

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, when 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 entrance of the tube head 320 is closed. The front end of the tube head 320 is prevented from being opened due to an increase in pressure of 1/ of the diameter exposed to the front end of the tube head 320 of each of the first magnets 411 as shown in FIG. 4. By 3, each of the shears can be rotated to be close to each other (in the case of (b) of FIG. 4).

The first magnetic body 410 having the above-described configuration may further include a first adhesive drape 413.

The first adhesive drape 413 prevents rust from being generated in the first magnet 411 and the second magnet 412 by moisture contained in the blood, while being separated from the first seating hole 220 In order to prevent this, the first magnet 411 and the second magnet 412 are wrapped and installed.

In the magnetic valve unit 400 having the configuration as described above, the first magnetic body 410 and the second magnetic body 420 are connected to the tube by an attractive force formed between the first magnetic body 410 and the second magnetic body 420. Close contact between the head 320 and the inner passage of the tube head 320 (Fig. 4 (b)), overcome the attraction formed between the first magnetic body 410 and the second magnetic body 420 The connector 710 is inserted through the inner passage of the tube head 320 to open the tube head 320 as the gap between the first magnetic body 410 and the second magnetic body 420 is widened (Fig. 4). Of (a)).

5 is a view showing the backflow prevention unit of FIG. 2.

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 part 300 may be inserted and mounted by force fit into the catheter hub 200, and the backflow prevention part 300 may be configured to be artificially difficult to attach and detach from the catheter hub 200, and also the adapter ( It may be configured to insert an ISO standard connector 710 into the inside of the 330).

The adapter is formed to be tapered at an angle of 6 degrees from the rear end diameter of the adapter to the shear diameter, 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 is the catheter flange It is configured to be mounted and sealed by rotating at an angle of 90 degrees or 180 degrees, and the backflow prevention cap further includes a rubber ring in the backflow prevention 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 the outer size of the connector, but the catheter hub is in close contact between the outer diameter of the connector and the tube body and the adapter. 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 inward so that the connector 710 inserted into the inner side can be closely inserted and inserted.

In one 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 illustrative purposes only, and those of ordinary skill in the art to which the above-described embodiments belong can easily transform into other specific forms without changing the technical idea or essential features of the above-described embodiments. You can understand. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as being distributed may also be implemented in a combined form.

The scope to be protected through the present specification is indicated by the claims to be described later rather than the detailed description, and should be interpreted as including all changes or modified forms derived from the meaning and scope of the claims and the concept of equivalents thereof. .

10: Intravenous tube catheter equipped with a blood reflux prevention device in the hub
100: catheter tube 200: catheter hub
210: hub body 220: first seating hole
230: second seating hole 240: catheter flange
250: second adhesive drape 260: magnet shield
300: backflow prevention unit 310: tube body
320: tube head 400: magnetic valve part
410: first magnetic body 411: first magnet
412: second magnet 413: first adhesive drape
420: second magnetic body

Claims (27)

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; When the needle is separated from the catheter tube, a backflow prevention part installed inside the catheter hub to prevent the blood flowing into the catheter hub through the catheter tube from flowing back to the outside of the catheter hub;
The backflow prevention part is formed in a cylindrical shape corresponding to the shape of the inner space of the catheter hub, the tube body installed inside the catheter hub, the tube head shaped like a ladder from the front end of the tube body, and the tube body is rigid The adapter of is inserted,
A magnetic valve part formed of a material that forms magnetism and installed on the catheter hub while facing the backflow prevention part, and opening and closing the backflow prevention part to prevent blood from moving through the backflow prevention part;
The magnetic valve part is installed on the other side of the catheter hub while forming a symmetrical structure with the first magnetic body and the first magnetic body installed on one side of the catheter hub and facing the first magnetic body with the tube head interposed therebetween, A second magnetic body in which a surface facing the first magnetic body is formed of a material that forms magnetism having a polarity opposite to that of the first magnetic body.
delete The vein of claim 1, wherein the inner diameter of the tube body is formed in close contact with or identical to the outer diameter of the connector for injecting the treatment fluid inserted into the length and width of the tube head, and the blood reflux prevention device is installed in the hub. Tube catheter. According to claim 1, wherein the inner diameter of the adapter inserted into the tube body is formed to be smaller than or equal to the outer diameter of the connector inserted into the inside, the tube catheter for veins installed in the hub for preventing blood reflux. The intravenous tube catheter according to claim 1, wherein the tube body and the tube head are formed of a soft-melting rubber material.
delete The method of claim 1, wherein the magnetic valve unit is in close contact with the first magnetic body and the second magnetic body through the tube head by an attractive force formed between the first magnetic body and the second magnetic body. The inner passage is closed, the attraction formed between the first magnetic body and the second magnetic body is overcome, and the connector is inserted through the inner passage of the adapter of the tube head, so that the gap between the first magnetic body and the second magnetic body is widened. The tube catheter for veins with a blood reflux prevention device installed in the hub to open the tube head according to. The method of claim 7, wherein the first magnetic body is formed in a disk shape and is seated on one side of the catheter hub; And a second magnet formed in the shape of a disk having a diameter smaller than that of the first magnet and installed on one surface of the first magnet facing the tube head,
The second magnetic body is formed in a disk shape, the first magnet seated on one side of the catheter hub; And a second magnet formed in the shape of a disk having a diameter smaller than that of the first magnet and installed on one surface of the first magnet facing the tube head; further comprising, a tube catheter for veins with a blood reflux prevention device installed in the hub . The tube catheter according to claim 8, wherein the first and second magnet diameters of the first magnetic body and the second magnetic body are formed in which the diameter of the first magnet is larger than the diameter of the second magnet. . The method of claim 8, wherein the first magnet,
Intravenous tube catheter with a blood reflux prevention device installed in the hub, formed with a diameter of 4 mm and a thickness of 0.5 mm.
The method of claim 8, wherein the second magnet,
Intravenous tube catheter with a blood reflux prevention device installed in the hub, which is 3mm in diameter and 0.5mm in thickness.
The method of claim 8, wherein the first magnet and the second magnet,
A tube catheter for veins with a blood reflux prevention device installed in the hub, formed of a permanent magnet.
The method of claim 8, wherein the first magnet,
2/3 of the diameter is opposite to the tube head, and the remaining 1/3 of the diameter is installed so as to be exposed to the front end of the tube head, a tube catheter for veins with a blood reflux prevention device installed in the hub.
The method of claim 13, wherein the first magnetic body and the second magnetic body,
In the case of closing the inner passage of the tube head, after being in close contact with each other to close the front end inlet of the tube head, each of the front ends is mutually increased by 1/3 of the diameter exposed to the front end of the tube head of each first magnet. An intravenous tube catheter with a blood reflux prevention device installed in the hub that rotates to get closer.
The method of claim 8, wherein the first magnetic body,
In order to prevent rust from being generated in the first magnet and the second magnet by moisture contained in blood, a first adhesive drape wrapped around the first magnet and the second magnet and installed thereon; further comprising: , Intravenous tube catheter equipped with a blood reflux prevention device in the hub.
The method of claim 15, wherein the catheter hub,
A hub body formed in a cylindrical shape and in which the backflow prevention part is installed;
A first seating hole formed through one side of the hub body so that the first magnetic body can be seated;
A second seating hole formed through the other side of the hub body so that the second magnetic body can be seated; And
A catheter flange protruding outwardly along the rear end of the hub body, including, a tube catheter for veins in which a blood reflux prevention device is installed in the hub.
The method of claim 16, wherein the catheter hub,
A second adhesive drape that surrounds the outer surface of the hub body and is installed; further comprising, a tube catheter for veins with a blood reflux prevention device installed in the hub.
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 is installed surrounding and installed on the outer surface of the second adhesive drape; further comprising, for veins in which a blood backflow prevention device is installed in the hub. Tube catheter.
The method of claim 18, wherein the magnet shield,
A tube catheter for veins with a blood reflux prevention device installed in the hub, which surrounds the outer surface of the second adhesive drape with one or two layers.
The method of claim 16, wherein the diameter of the first mounting hole,
Vein tube catheter with a blood reflux prevention device installed in the hub, which is formed equal to the diameter of the first magnet.
According to claim 1, The adapter, The catheter tube catheter for venous with a blood reflux prevention device is installed in the hub is formed by inserting and fitting into the catheter hub. The tube catheter of claim 21, wherein the adapter is tapered to have a front end diameter smaller than a rear end diameter of the adapter. The method of claim 22, wherein the adapter,
A tube catheter for veins with a blood reflux prevention device installed in the hub, formed to be tapered at an angle of 6 degrees from the rear end diameter of the adapter to the shear diameter.
The method of claim 16, wherein the catheter flange,
Intravenous tube catheter with anti-return cap or heparin cap installed in the hub.
The method of claim 24, wherein the backflow prevention cap or the heparin cap,
Vein tube catheter with a blood reflux prevention device installed in the hub, which is mounted and sealed at an angle of 90 degrees to 180 degrees on the catheter flange.
The method of claim 25, wherein the backflow prevention cap,
Vein tube catheter with a blood reflux prevention device installed in the hub, further comprising a rubber ring in the reflux prevention cap.
The connector according to claim 3, wherein the inner shape and the inner size of the tube body and the adapter are formed to be the same as the outer shape and the outer size of the connector, but are in close contact between the outer diameter of the connector and the tube body and the adapter. Intravenous tube catheter in which the adapter is fixedly inserted in the catheter hub, and the blood reflux prevention device is installed in the hub.

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