WO2015125987A1 - Seringue avec aiguille filtrante intégrée, dispositif de prévention de reflux sanguin et cathéter veineux pourvu d'un dispositif de prévention de reflux sanguin - Google Patents

Seringue avec aiguille filtrante intégrée, dispositif de prévention de reflux sanguin et cathéter veineux pourvu d'un dispositif de prévention de reflux sanguin Download PDF

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Publication number
WO2015125987A1
WO2015125987A1 PCT/KR2014/001407 KR2014001407W WO2015125987A1 WO 2015125987 A1 WO2015125987 A1 WO 2015125987A1 KR 2014001407 W KR2014001407 W KR 2014001407W WO 2015125987 A1 WO2015125987 A1 WO 2015125987A1
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WO
WIPO (PCT)
Prior art keywords
needle
chemical liquid
filter
housing
filter needle
Prior art date
Application number
PCT/KR2014/001407
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English (en)
Korean (ko)
Inventor
이영희
강성식
Original Assignee
엘케이메디칼(주)
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Filing date
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Application filed by 엘케이메디칼(주) filed Critical 엘케이메디칼(주)
Priority to PCT/KR2014/001407 priority Critical patent/WO2015125987A1/fr
Publication of WO2015125987A1 publication Critical patent/WO2015125987A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3293—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles characterised by features of the needle hub
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/3145—Filters incorporated in syringes

Definitions

  • the present invention relates to an intravenous catheter equipped with a filter needle integrated syringe, a blood flow preventing device and a blood flow preventing device, and more particularly, a syringe having an integrated filter needle with a filter installed therein, and using the same, It relates to a venous catheter equipped with a blood backflow prevention device that can prevent the backflow of blood in the injected syringe.
  • injections are stored in glass ampoules or vials, mostly in liquid or powder form.
  • glass ampoules have a problem of being easily broken compared to vials, but they are widely used because of the advantages of storing chemicals stably. Vials are not broken and easy to move. There is a problem of this eluting. Therefore, in consideration of the safety of the storage, the injection is generally stored and distributed in the glass ampoule.
  • FIG. 1 shows an example of a conventional syringe 2a, 2b for sucking an injection liquid from a glass ampoule 1.
  • the glass ampoule 1 breaks open the neck portion in use, and then, as shown in FIG. 1, in the ecology in which the injection needle 3 of the syringes 2a and 2b is inserted into the glass ampoule 1.
  • the injection liquid is sucked into the syringes 2a and 2b.
  • reference numeral 2a of FIG. 1 denotes a cylinder constituting the syringes 2a and 2b
  • reference numeral 2b denotes a piston for inflow of the injection liquid.
  • the neck part is broken and used, and thus, fine glass fragments generated when the glass ampoule 1 is broken may flow into the glass ampoule 1.
  • the glass debris introduced into the glass ampoule 1 may be sucked into the syringes 2a and 2b together with the injection liquid when the injection liquid is sucked into the syringes 2a and 2b, and into the corresponding syringes 2a and 2b.
  • Injecting the injection solution into the human body has a serious problem of use in which the glass fragments are finally injected into the human body.
  • glass debris once injected into the body is not discharged again, but it moves around the blood vessels and becomes stuck in organs such as the lungs, which impedes the flow of blood, and because it is a foreign body itself, it mixes with various human tissues and forms a kind of blood clot. Grabbing will cause fatal side effects on the patient's health.
  • the filter needle when injecting an injection solution to a person, the filter needle is attached to the syringe to suck the injection solution from the glass ampoule into the syringe, the filter needle is removed from the syringe, and another needle is attached to the syringe. Injecting the injection liquid to the human, there is an inconvenience to repeat the mounting and removal alternately the filter needle and the other needle.
  • the infusion set is used for intravenous injection
  • the conventional infusion set of the conventional type is composed of a chamber coupled to the pharmaceutical container, the regulator, the hub chamber coupled to the venous catheter and the tube for connecting the hub.
  • Infusion of the infusion by the infusion set is also performed by inserting the intravenous catheter into the blood vessel and connecting the hub of the intravenous catheter with the infusion set.
  • Conventional venous catheter uses a flexible material for the protection of blood vessels, and is used in one unit with a metal guide needle to facilitate the entry of blood vessels.
  • the guide needle and the venous catheter are configured as a unit, the guide needle penetrates the skin to guide the vascular ingress of the venous catheter, and then separates and discards the venous catheter. By connecting the fluid set to supply the fluid into the blood vessels.
  • Korean Patent Laid-Open Publication No. 2003-0065450 discloses a blood leakage and backflow prevention needle hub for an infusion set.
  • the blood leakage and backflow prevention needle hub for the infusion set uses a cylindrical body 10, a conical backflow control valve 20, and a fixing ring 30 for fixing it. do.
  • the lower portion of the main body is formed with a needle injection portion 12 for injection of blood vessels having a slight taper, and a chemical liquid passage 13 continuous from the top to the bottom is formed therein.
  • the chemical liquid passage is divided into four steps (13a) (13b) (13c) and (13d) from the upper part to the lower part, and the inner diameter of the first end 13a of the upper part is the largest, the second end 13b, and the third end 13c.
  • the lower stage (13d) is configured to be slightly larger than the third stage after the configuration to be gradually reduced to) was configured to easily install the backflow control valve (20).
  • the first stage (13a) is inserted into the fixing ring 30 for the fixing of the backflow control valve, and forms a tube coupling portion 31 into the fixing ring, the lower end of the fixed ring in the form of reverse cone flow control
  • the valve contact surface 32 is formed.
  • the third stage is configured as a cone-shaped stage so that the vacancy 14 into which the counter flow control valve can be inserted is formed at the second stage between the fixed ring and the third stage.
  • the reverse flow control valve 20 has a conical contact surface 21 formed on the upper portion of the circumference and a reverse conical contact surface 22 having a gap formed on the lower portion thereof.
  • the counter flow control valve of the above structure has a clearance of about 4-5 mm between the contact surface 32 formed on the fixed ring and the contact surface formed on the third stage, and is coupled in a state capable of flowing in the vacancy along the direction of pressure. do.
  • the non-return needle needle hub according to the prior art described above should be composed of a plurality of stages of the chemical liquid passage, and should be provided with a fixing ring, a tube coupling portion, a blood vessel injection needle inserting portion, etc. There was a problem that this was expensive, and there was a problem that it was inconvenient to use.
  • the blood leakage and backflow prevention needle hub for the chemical solution set is installed between the needle and the ringer tube, it has a structure formed integrally with the ringer, it was difficult to apply to disposable venous catheter.
  • the present invention has been made to solve the above problems, while providing a filter needle-integrated syringe that can be easily used and more easily inject the injection while blocking the inflow of foreign substances such as glass fragments into the syringe.
  • the purpose is.
  • an object of the present invention is to provide a venous catheter provided with a blood backflow prevention device and a blood backflow prevention device which can be directly installed on the injection needle and can easily prevent the backflow of blood in the Ringer drug solution.
  • Needle integrated syringe an injection needle portion having a needle hub which is fastened to the syringe cylinder, and a needle fastened to the needle hub;
  • a filter needle having a filter needle hub in which the needle hub is fastened to the inside, a filter needle in communication with the filter needle hub and having an injection space into which the needle is inserted, and a filter installed in the injection space of the filter needle It is achieved by a filter needle integrated syringe, characterized in that it comprises a portion.
  • the blood backflow prevention device of the present invention one end is connected to the drug solution set connected to the drug solution set, the other end in the blood backflow prevention device installed in the venous catheter provided with a body portion connected to the catheter needle, the other end, A housing having a chemical liquid storage space in contact with an inner circumferential surface of the main body portion and inserted into the main body portion so that the other end thereof is positioned adjacent to the catheter needle, and storing a chemical liquid supplied through the chemical liquid set connecting portion; And an incision formed on one side of the housing to allow the chemical to pass through and to prevent the chemical between the body and the housing from entering the chemical storage space.
  • the chemical liquid in the chemical storage space is passed through the incision into the space provided between the housing and the main body portion is provided to the blood vessels of the human body via the catheter injection needle, between the body portion and the housing
  • the drug solution is characterized in that the inflow into the drug solution storage space is blocked by the incision to prevent the back flow of blood to the drug solution set connection portion.
  • the filter needle portion blocks the inflow of foreign substances such as glass fragments into the syringe while the filter needle portion is injected into the patient after the injection of the injection liquid is completed. Since the part can be easily separated from the injection needle and injected, the filter needle part can be simply separated and used without having to perform injection liquid suction and injection while replacing the injection needle and the filter needle with each other in the syringe cylinder as in the prior art. It is possible to provide a filter needle-integrated syringe which is simple to use, prevents accidents that may occur when replacing the filter needle, and which can easily inject the injection liquid.
  • the blood backflow prevention device according to the present invention can be simply fastened to an existing needle or infusion set, so that it is easy to use, and the blood backflow prevention device can be easily installed in the venous catheter. It is easy to use, and it can be easily prevented by the simple structure of blood backflow when dosing Ringer.
  • the present invention has a structure that is fitted to the needle before the needle is inserted into the human body, it can be easily installed in the disposable venous catheter as well as the ringer needle, except when taking the blood from the human body It can be used in any case to prevent blood flow back to the human body.
  • the present invention unlike the blood leakage and backflow prevention needle hub for the chemical solution set which is installed integrally with the syringe in the prior art, it is easy to use because it can be detachably and simply fastened to the connector of the chemical solution set.
  • FIG. 1 is a diagram showing an example of a conventional syringe for sucking an injection liquid from a glass ampoule.
  • FIG. 2 is a schematic cross-sectional view of a blood leakage and backflow prevention needle hub for a chemical solution set according to the prior art.
  • FIG. 3 is an exploded perspective view of a filter needle integrated syringe according to an embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of the filter needle-integrated syringe according to an embodiment of the present invention
  • FIG. 5 is an enlarged view of area A of FIG. 4,
  • FIG. 6 is a cross-sectional view of the filter needle-integrated syringe according to another embodiment of the present invention.
  • FIG. 7 is an enlarged view of region B of FIG. 6.
  • FIG. 8 is a view showing an example of a chemical liquid set connecting portion of the present invention.
  • FIG. 9 is a view schematically showing a state in which the blood backflow prevention device of the present invention is installed in the main body;
  • FIG. 10 is a view illustrating the insertion of the guide needle into the venous catheter of the present invention.
  • Figure 11 schematically shows a state in which the blood backflow prevention device according to another embodiment of the present invention is installed in the body portion.
  • FIG. 12 is a schematic diagram illustrating the flow of the chemical liquid and the position of the chemical liquid injection unit when the blood backflow prevention device according to another embodiment of the present invention is installed in the main body portion and when a force is applied to the chemical liquid.
  • An embodiment of the filter needle integrated syringe of the present invention includes an injection needle portion having a needle hub fastened to a syringe cylinder, and a needle fastened to the needle hub;
  • a filter needle having a filter needle hub in which the needle hub is fastened to the inside, a filter needle in communication with the filter needle hub and having an injection space into which the needle is inserted, and a filter installed in the injection space of the filter needle It is preferable to include a part.
  • one end is connected to a chemical solution set connecting portion connected to the chemical liquid set, and the other end in the blood flow preventing apparatus installed in the venous catheter provided with a body portion connected to the catheter needle, the one end is the main body A housing having a chemical liquid storage space in contact with an inner circumferential surface of the portion and inserted into the main body portion such that the other end thereof is positioned adjacent to the catheter needle, and storing the chemical liquid supplied through the chemical liquid set connecting portion; And an incision formed on one side of the housing to allow the chemical to pass through and to prevent the chemical between the body and the housing from entering the chemical storage space.
  • the chemical liquid in the chemical storage space When applied, the chemical liquid in the chemical storage space is passed through the incision into the space provided between the housing and the main body portion is provided to the blood vessels of the human body via the catheter injection needle, between the body portion and the housing The chemical liquid is blocked by the incision into the chemical storage space to prevent the back flow of blood to the chemical liquid set connecting portion.
  • the drug solution set connection portion is stored in the drug solution;
  • a main body having one end connected to the chemical liquid set connecting part and a catheter injection needle provided at the other end;
  • the housing And an incision formed on one side of the housing to allow the chemical to pass through and to prevent the chemical between the body and the housing from entering the chemical storage space.
  • the chemical liquid in the chemical storage space is passed through the incision into the space provided between the housing and the main body portion is provided to the blood vessels of the human body via the catheter injection needle, between the body portion and the housing
  • the drug solution is characterized in that the inlet to the drug solution storage space is blocked by the incision to prevent the back flow of blood to the drug solution set connecting portion.
  • FIG. 3 is an exploded perspective view of a filter needle integrated syringe according to an embodiment of the present invention
  • FIG. 4 is a cross-sectional view of the filter needle integrated syringe according to an embodiment of the present invention.
  • the filter needle integrated syringe according to the present invention includes an injection needle part 103 fastened to the syringe cylinder, and a filter needle part 330 detachably fastened to the injection needle part. It includes.
  • the filter needle integrated needle according to the present invention is installed at the inlet side of the syringe 100, the filter needle portion 330 is used to suck the injection liquid stored in the glass ampoule into the cylinder 101 of the syringe 100,
  • the injection needle part 103 is used to inject the injection liquid sucked into the cylinder 101 of the syringe 100 to the human body.
  • the filter needle unit 330 may include a filter needle hub 331, a filter needle 332, and a filter 333.
  • the filter needle hub 331 is coupled to the needle hub 104 to be described later of the injection needle unit 103, the other side is connected to the filter needle 332.
  • the filter needle 332 is formed with an injection space 332a in communication with the filter needle hub 331.
  • the filter 333 is installed inside the injection space 332a of the filter needle 332, and when the injection liquid flowing through the filter needle 332 passes, it filters out foreign substances such as glass fragments contained in the injection liquid Foreign matter such as debris is blocked from entering the syringe 100 from the glass ampoule.
  • the filter needle and the filter needle hub is preferably formed of a plastic material.
  • the filter needle and the filter needle hub made of a plastic material, not only the filter needle can be easily formed to have a somewhat larger diameter, but also the inner diameter of the filter needle can be easily manufactured to an appropriate diameter as necessary. Accordingly, the filter inserted into the filter needle may be easily installed.
  • the injection needle portion 103 includes an injection needle 105 and a needle hub 104.
  • the injection needle 105 is a portion that is inserted into the human body when the injection liquid is injected into the human body of the filter needle 332 from the filter needle hub 331 when the needle hub 104 is coupled with the filter needle hub 331. It is inserted into the injection space 332a.
  • the injection needle 105 is inserted into the injection space 332a of the filter needle 332, it is inserted up to the front end of the filter 333 installed inside the injection space 332a, as shown in FIG. . Accordingly, the injection liquid sucked from the glass ampoule through the filter needle 332 is introduced into the cylinder 101 of the syringe 100 through the filter 333, such as glass fragments that may be included in the injection liquid in the glass ampoule. The foreign matter is introduced into the cylinder 101 of the syringe 100 in a filtered state by the filter 333.
  • the needle hub 104 is inserted into the filter needle hub 331 is fastened.
  • the needle hub 104 is then coupled to the outlet side of the cylinder of the syringe 100.
  • the needle hub 104 is fastened in the state inserted into the filter needle hub 331, the injection needle 105 is accommodated inside the filter needle 332
  • the filter needle portion 330 is integrally formed with the injection needle portion 103 to constitute the filter needle integrated syringe according to the present invention.
  • the filter needle-integrated syringe according to the present invention is manufactured and used in a state in which the injection needle in the state where the filter needle is fastened is fastened to the cylinder of the syringe.
  • the glass ampoule is opened by breaking the tip of the glass ampoule, and then the filter needle 332 of the filter needle part 330 is inserted into the glass ampoule to retract the piston of the syringe 100.
  • the injection liquid in the ampoule flows into the filter needle 332 through the filter needle 332 of the filter needle part 330.
  • the injection liquid introduced into the filter needle 332 is introduced into the cylinder 101 of the syringe 100 after the foreign matter such as glass fragments contained in the injection liquid is filtered while passing through the filter 333.
  • the injection needle 105 of the injection needle part 103 is separated by separating the filter needle part 330 from the injection needle part 103. Exposed to the outside.
  • the operator inserts the injection needle 105 exposed to the outside of the human body to introduce the injection liquid into the human body through the injection needle 105.
  • the filter needle part can be easily separated and injected from the injection needle, the filter needle part can be simply separated and used without having to perform injection liquid suction and injection while replacing the injection needle and the filter needle with each other in the syringe cylinder as in the prior art. Since it is easy to use, it is possible to prevent a safety accident that may occur when replacing the filter needle, it is possible to provide a filter needle-integrated syringe that can easily inject the injection.
  • FIG. 5 is an enlarged view of region A of FIG. 4.
  • the outer diameter of the needle hub 104 according to the present invention is formed with a fastening protrusion 106 protruding toward the inner diameter side of the filter needle hub 331.
  • a fastening groove 335 may be formed at an inner diameter of the filter needle hub 331 to engage the fastening protrusion 106 when the needle hub 104 is fastened to the filter needle hub 331.
  • the fastening protrusion 106 formed at the outer diameter of the needle hub 104 is formed at the inner diameter of the filter needle hub 331.
  • the needle hub 104 and the filter needle hub 331 are coupled to each other.
  • the force of the fastening protrusion 106 is pushed out to the fastening groove 335, so that the two members can be separated.
  • the fastening protrusion 106 and the fastening groove 335 is an example formed along the circumferential direction in the outer diameter of the needle hub 104 and the inner diameter of the filter needle hub 331. That is, as shown in FIG. 4, the fastening protrusion 106 is formed along the circumferential direction at the outer diameter of the needle hub 104, and correspondingly, the fastening groove 335 also has the inner diameter of the filter needle hub 331. For example, it is formed along the circumferential direction.
  • the fastening protrusion 106 is formed in the outer diameter of the needle hub 104
  • the fastening groove 335 is formed in the inner diameter of the filter needle hub 331 as an example
  • the fastening protrusion 106 may be formed in the inner diameter of the fastening groove 335
  • the fastening groove 335 may be configured to be formed in the outer diameter of the needle hub 104.
  • the coupling between the filter needle hub 331 and the needle hub 104 is implemented by coupling between the fastening protrusion 106 and the fastening groove 335, the filter needle hub 331
  • the internal thread and the external thread of the needle hub 104 can be fastened to each other is formed to be coupled to each other in a screw coupling structure, of course.
  • the needle hub 104 is connected to the needle hub 104 by the coupling between the thread 107 formed at the inner diameter of the needle hub 104 and the thread 102 formed at the outlet side of the syringe 100. It can be implemented by configuring to correspond to the configuration coupled to the outlet side of the syringe (100).
  • the filter needle integrated syringe according to the present invention may further include a filter needle protection cap 350.
  • the filter needle protection cap 350 has an accommodation space 350a in which the filter needle part 330 is accommodated.
  • the filter needle protection cap 350 is formed to be coupled to the filter needle hub 331 in a state where the filter needle part 330 is accommodated in the accommodation space 350a to surround the filter needle part 330.
  • the inner diameter of the coupling groove 351 is engaged with the engaging projection 334 is formed may be provided so that the filter needle protective cap 350 is coupled to the filter needle hub 331.
  • the formation position of the coupling protrusion 334 and the coupling groove 351 may of course be changed.
  • the filter needle 330 which is in direct contact with the injection liquid can be covered from the outside, and at the same time, the filter needle 332 of the rather sharp filter needle 330 can be prevented from being exposed to the outside.
  • FIGS. 6 and 7 a filter needle integrated syringe according to another embodiment of the present invention will be described with reference to FIGS. 6 and 7.
  • the same reference numerals are used for the components corresponding to the above-described embodiment described with reference to FIGS. 3 to 5 and the description thereof may be omitted. It will be described mainly in the configuration that differentiates.
  • the filter needle part 330 of the filter needle integrated syringe may further include an inner protective cap 370.
  • the inner protective cap is installed between the filter needle protective cap and the filter needle hub.
  • the inner protective cap 370 has an exposure hole 372 is formed on one side, the other side is coupled to the filter needle hub 331.
  • the other side of the filter needle hub 331 is coupled to the filter needle hub 331 so that the edge region of the filter needle 332 is exposed or discharged to the outside through the exposure hole 372.
  • the filter needle 332 exposed through the exposure hole 372 is inserted into the glass ampoule.
  • the injection liquid inside the glass ampoule may be introduced into the syringe 100.
  • the filter needle integrated syringe may further include a filter needle protection cap 350 as in the above-described embodiment.
  • the filter needle protection cap 350 has an accommodating space 350a in which the filter needle part 330 is accommodated and the filter needle part 330 is accommodated in the accommodating space 350a.
  • 330 which is illustrated in FIG. 7, the filter needle protective cap 350 is coupled to the inner protective cap 370.
  • the outer diameter of the inner protective cap 370 as shown in Figure 7, the engaging projection 371 protruding toward the filter needle protective cap 350 is formed, the inner diameter of the filter needle protective cap 350
  • a coupling groove 351 may be formed to engage the coupling protrusion 371 so that the filter needle protection cap 350 may be coupled to the inner protection cap 370.
  • the formation position of the coupling protrusion 371 and the coupling groove 351 can be changed.
  • the filter needle 332 of the rather sharp filter needle portion 330 is prevented from being exposed to the outside. It becomes possible.
  • Intravenous catheters provided with a blood backflow prevention device and a blood backflow prevention device according to an embodiment of the present invention, when the needle is inserted into a blood vessel of the human body, to prevent the blood flowing through the blood vessel flows back into the drug set connection portion It is a tool.
  • the blood backflow prevention device may be used by removing the filter needle from the needle body injecting the medicine liquid by the aforementioned filter needle-integrated syringe and attaching the blood backflow prevention device. Of course you can.
  • the venous catheter 110 As shown in Figure 8 to 10, the venous catheter 110 according to an embodiment of the present invention is provided with a chemical liquid set connecting portion 111 and the main body 115.
  • the chemical liquid set connecting portion 111 may be an example of a chemical liquid set connector having a 3-way stopcock invented by the inventor of the present application, but is not necessarily limited thereto, It may also comprise a connecting device provided at the end of the connecting hose of the fluid set.
  • a fluid or a chemical solution stored in a ring or a disposable syringe is supplied through the chemical liquid set connecting portion 111, and a thread 111a is formed on the outer circumferential surface of the chemical liquid set connecting portion 111 for fastening with the venous catheter.
  • one end of the main body 115 of the venous catheter is connected to the drug supply set connecting portion 111 and the other end is provided with a catheter injection needle (117).
  • the size of the main body 115 and the catheter needle 117 is not particularly limited.
  • the main body 115 preferably has a thread 115a on the inner circumferential surface of the main body 115 as shown in the enlarged portion B of FIG. 9.
  • the main body 115 is a screw thread 115a of the main body 115 is screwed with the screw thread 111a provided in the chemical liquid set connecting portion 111 is closely coupled to the chemical liquid set connecting portion 111 to prevent leakage of the chemical liquid. You can prevent it.
  • the blood backflow prevention device 120 is installed inside the main body 115.
  • Blood backflow prevention device 120 is composed of a housing 121 and the cutout 125 provided in the housing 121.
  • the housing 121 is made of silicone or rubber material. Therefore, when the blood backflow prevention device 120 is installed in the body portion 115, the blood flow backflow prevention device 120 can be easily inserted into the body portion 115 due to the specificity of the material, and at the same time, the body portion easily detached from the main body portion 115 by the frictional force by the contact with the 115 can be prevented.
  • the housing 121 has a main body 115 such that one end 121a is in contact with the inner circumferential surface of the main body 115 and the other end 121b is positioned adjacent to the catheter needle 117. It is inserted inside of.
  • the housing 121 has a conical shape as the inner diameter decreases from one end 121a of the housing to the other end 121b of the housing, and has a conical shape, and the chemical liquid storage space in which the chemical liquid provided by the chemical liquid set connection 111 is temporarily stored. It is preferable to have a structure in which one end is opened and the other end is closed so that the 122 is provided.
  • the cutout 125 is provided on the outer circumferential surface of the housing 121 according to the embodiment of the present invention.
  • the cutout 125 cuts a part of the outer circumferential surface of the housing 121 in one shape from one end 121a of the housing toward the other end 121b of the housing or along the circumferential direction of the housing. As it is formed while, as shown in the enlarged view of Figure 9 the width of the incision toward the outer side from the inner side of the housing 121 is formed to become narrow (v) shape.
  • the cutout portion 125 is configured to narrow the cutout width from the inside of the housing to the outward direction, as described above, the chemical liquid supplied through the chemical liquid set connecting portion 111 is disposed in the housing 121. It is easily opened by the force of pressurizing the chemical liquid after being accommodated in the chemical storage space 122 of, but when the blood flows back, the pressure of the flowing back blood is easily opened by applying a reverse pressure by the shape of the incision described above. It is to prevent the inflow of the chemical liquid between the main body 115 and the housing 121 to the chemical liquid storage space 122 serves to act as a valve ( ⁇ ).
  • the force for pressurizing the chemical liquid is the gravity applied to the chemical liquid when the chemical liquid is provided from a high place to a low place when the chemical liquid is accommodated in a ringer type bottle, and when the chemical liquid is applied to the disposable syringe type, the chemical liquid set connection part ( The force applied to the piston provided at 111 is a force for pressing the chemical liquid.
  • the chemical liquid in the chemical storage space 122 when a force is applied to the chemical liquid contained in the chemical storage space 122, the chemical liquid in the chemical storage space 122 is along the direction of the arrow as shown in the enlarged portion A of FIG. After passing through the cutout 125, the inflow into the space provided between the housing 121 and the main body 115 is provided to the catheter injection needle 117.
  • the catheter needle 117 When the catheter needle 117 is installed in the blood vessel of the human body, the chemical liquid provided to the catheter needle 117 is provided to the blood vessel of the human body.
  • the incision 125 serves as a valve in the housing 121 to flow back through the needle 117
  • the incision 125 serves as a valve in the housing 121 to flow back through the needle 117
  • Intravenous catheter of the present invention having the configuration as described above, as shown in Figure 10, using a conventional guide needle (2) is injected into the blood vessels of the human body of the patient with the venous catheter of the present invention, and then After removing the guide needle, the other end of the venous catheter is screwed and fastened by connecting the chemical solution set connector, and is configured to supply the chemical liquid from a chemical supply source such as Ringer, it is easy to use.
  • a chemical supply source such as Ringer
  • FIG. 11 a vein catheter 210 having a blood backflow prevention device 220 and a blood backflow prevention device 220 according to a second embodiment of the present invention will be described.
  • the shapes of the main body part 215 and the housing 221 provided with the chemical liquid set connection part 211, the catheter injection needle 217, and the housing 221 are the same as those of the first embodiment. Repetitive description of the material of 221 will be omitted.
  • the cutout 225 different from the above-described first embodiment will be described.
  • the cutout 225 is formed by cutting a portion of the outer circumferential surface of the housing 221 in a p-shape, and the chemical liquid in the chemical liquid set connection part 211 is formed in the housing 221.
  • the chemical storage space 222 After being accommodated in the chemical storage space 222 is opened by a force for pressing the chemical liquid, and serves to prevent the inflow of the chemical liquid between the body portion 215 and the housing 221 into the chemical liquid storage space 222 ( ⁇ ) To do.
  • the chemical liquid in the chemical storage space 222 is cut along the direction of the arrow as shown in part A enlarged view of FIG. After passing through 225, the liquid is introduced into the space provided between the housing 221 and the main body 215, and then flows down along the inner circumferential surface of the main body 215 to be provided to the catheter needle 217.
  • the chemical liquid provided to the catheter needle 217 is provided to the blood vessel of the human body.
  • the incision 225 serves as a valve in the housing 221 to flow back through the catheter needle 217 By blocking the introduced blood into the chemical storage space 222, blood of the blood vessel can be prevented from flowing back to the chemical liquid set connection portion 211.
  • FIG. 12 a vein catheter 310 provided with a blood backflow prevention device 320 and a blood backflow prevention device 320 according to a third embodiment of the present invention will be described.
  • the repeated description of the main body part 315 provided with the same chemical solution set connection part 311 and the catheter injection needle 317 will be omitted. do.
  • the first embodiment and the blood backflow prevention device 320 will be described.
  • the blood backflow prevention device 320 is preferably made of a housing 321, the incision 325 and the chemical injection portion 327.
  • the housing 321 according to the present embodiment is made of silicon or rubber material.
  • the housing 321 preferably has a shape and structure that are inserted into the main body 315 such that the outer circumferential surface is in close contact with the inner circumferential surface of the main body 315.
  • the inner diameter of the housing 321 decreases from one end of the housing 321 to the other end of the housing 321 so that the chemical liquid storage space 322 for storing the chemical liquid provided by the chemical liquid set connecting portion 311 is provided. It is preferred to have a conical shape.
  • the inner circumferential surface of the housing 321 is spaced apart from the first protrusion 321a protruding toward the accommodation storage space, and the second protrusion protruding toward the accommodation storage space at a predetermined distance from the first protrusion 321a. 321b) is provided. And, the other end of the housing 321 according to an embodiment of the present invention is provided with a cutout 325.
  • the chemical injection portion 327 is installed inside the housing 321.
  • the chemical injection portion 327 is one end 327a is installed to be movable in the space provided between the first protrusion 321a and the second protrusion 321b, the other end 327b facing the incision 325 It is preferable that the inside of the housing 321 is installed.
  • the chemical liquid injection part 327 according to the present embodiment preferably has a funnel type shape in which an inner diameter decreases from one end 327a toward the other end 327b.
  • the internal diameter of the chemical liquid injection part 327 is a housing. It is preferable to be smaller than the inner diameter of 321.
  • the chemical liquid injection part 327 has a structure in which one end 327a and the other end 327b are opened, and the other end 327b of the chemical liquid injection part 327 penetrates the cutout 325. It is desirable to have a diameter that can be.
  • the chemical liquid injection portion 327 is a chemical liquid injection portion 327 as shown in Figure 12 (a) One end 327a is positioned to contact the first protrusion 321a, and at this time, the other end 327b of the chemical liquid injection part 327 is spaced apart from the cutout 325 by a predetermined interval of the housing 321. It is located inside.
  • the chemical liquid injection portion 327 is one end of the chemical liquid injection portion 327 as shown in (b) of FIG. 327a is positioned to contact the second protrusion 321b, and the other end 327b of the chemical injection portion 327 is positioned at the other end of the housing 321 through the cutout 325.
  • the chemical liquid of the chemical liquid set connecting portion 311 is introduced into the space between the housing 321 and the main body portion 315 via the chemical liquid injection portion 327 in the direction of the arrow is supplied to the catheter needle 317 Has a structure.
  • the supply of the chemical solution is stopped so that blood in the blood vessel flows back through the catheter needle 317.
  • the chemical liquid injection portion 327 is moved as shown in (a) of FIG. 12 in the state (b) of FIG. 12, wherein the incision 325 is moved from the housing 321 to the valve. It serves to block the backflow of the blood flow back through the catheter needle 317 to the chemical solution storage space 322, it is possible to prevent the blood of the blood vessel to flow back to the drug solution set connection portion 311.
  • the present invention relates to an intravenous catheter and a filter needle-integrated syringe equipped with a blood backflow prevention device and a blood backflow prevention device, and can be used as a device used to inject a medicine solution into the body to treat a patient.

Landscapes

  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

La présente invention concerne une seringue avec une aiguille filtrante intégrée comprenant une partie d'aiguille filtrante qui comporte les éléments suivants : un raccord d'aiguille filtrante auquel un raccord d'aiguille de seringue est couplé ; une aiguille filtrante communiquant avec le raccord d'aiguille filtrante et ayant un espace d'injection dans lequel une aiguille de seringue est insérée ; et un filtre prévu dans l'espace d'injection de l'aiguille filtrante. Ladite seringue est simple d'utilisation, grâce à la séparation aisée de la partie d'aiguille filtrante lorsqu'un fluide d'injection est injecté dans un patient une fois l'aspiration du fluide d'injection achevée. Elle permet le bloquer l'entrée de substances étrangères dans la seringue, et d'empêcher un accident susceptible de se produire lors du remplacement de l'aiguille filtrante. En outre, un dispositif de prévention de reflux sanguin de la présente invention comprend les éléments suivants : un boîtier comportant un espace de stockage de médicament liquide pour stocker un médicament liquide fourni par le biais d'une partie de raccordement d'ensemble de médicament liquide ; et une partie découpée formée par découpe au niveau d'un côté du boîtier de telle sorte que le médicament liquide passe au travers, empêchant le médicament liquide qui se trouve entre une partie de corps principal et le boîtier de s'écouler dans l'espace de stockage de médicament liquide, ce qui empêche facilement un reflux sanguin avec une structure simple, lorsqu'une solution de Ringer est perfusée.
PCT/KR2014/001407 2014-02-21 2014-02-21 Seringue avec aiguille filtrante intégrée, dispositif de prévention de reflux sanguin et cathéter veineux pourvu d'un dispositif de prévention de reflux sanguin WO2015125987A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/KR2014/001407 WO2015125987A1 (fr) 2014-02-21 2014-02-21 Seringue avec aiguille filtrante intégrée, dispositif de prévention de reflux sanguin et cathéter veineux pourvu d'un dispositif de prévention de reflux sanguin

Applications Claiming Priority (1)

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PCT/KR2014/001407 WO2015125987A1 (fr) 2014-02-21 2014-02-21 Seringue avec aiguille filtrante intégrée, dispositif de prévention de reflux sanguin et cathéter veineux pourvu d'un dispositif de prévention de reflux sanguin

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN110353991A (zh) * 2019-07-25 2019-10-22 江苏苏云医疗器材有限公司 一种注射用精密过滤装置及其过滤方法
CN110812229A (zh) * 2019-12-09 2020-02-21 湖南平安医械科技有限公司 一种带空气过滤功能的配药针
CN112915013A (zh) * 2020-09-10 2021-06-08 美蓝(杭州)医药科技有限公司 一体式配药注射器及其使用方法

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US4316462A (en) * 1980-05-21 1982-02-23 Siloam, Inc. Filtering device for an injection device
JPH07303697A (ja) * 1993-04-08 1995-11-21 Fresenius Ag ポートカニューレ装置
KR200377289Y1 (ko) * 2004-12-06 2005-03-10 박성례 주사수액 역류방지 장치
JP2005214406A (ja) * 2004-02-02 2005-08-11 Hanako Medical Kk 逆止弁及びそれを収納した逆止弁ハウジング
KR20110051562A (ko) * 2009-11-10 2011-05-18 백우인 일회용 주사기
KR20140061653A (ko) * 2012-11-14 2014-05-22 엘케이메디칼(주) 혈액역류방지장치 및 혈액역류방지장치가 구비된 정맥카테터
KR20140065137A (ko) * 2012-11-21 2014-05-29 엘케이메디칼(주) 필터 니들 일체형 주사기

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Publication number Priority date Publication date Assignee Title
US4316462A (en) * 1980-05-21 1982-02-23 Siloam, Inc. Filtering device for an injection device
JPH07303697A (ja) * 1993-04-08 1995-11-21 Fresenius Ag ポートカニューレ装置
JP2005214406A (ja) * 2004-02-02 2005-08-11 Hanako Medical Kk 逆止弁及びそれを収納した逆止弁ハウジング
KR200377289Y1 (ko) * 2004-12-06 2005-03-10 박성례 주사수액 역류방지 장치
KR20110051562A (ko) * 2009-11-10 2011-05-18 백우인 일회용 주사기
KR20140061653A (ko) * 2012-11-14 2014-05-22 엘케이메디칼(주) 혈액역류방지장치 및 혈액역류방지장치가 구비된 정맥카테터
KR20140065137A (ko) * 2012-11-21 2014-05-29 엘케이메디칼(주) 필터 니들 일체형 주사기

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110353991A (zh) * 2019-07-25 2019-10-22 江苏苏云医疗器材有限公司 一种注射用精密过滤装置及其过滤方法
CN110353991B (zh) * 2019-07-25 2024-05-14 江苏苏云医疗器材有限公司 一种注射用精密过滤装置及其过滤方法
CN110812229A (zh) * 2019-12-09 2020-02-21 湖南平安医械科技有限公司 一种带空气过滤功能的配药针
CN112915013A (zh) * 2020-09-10 2021-06-08 美蓝(杭州)医药科技有限公司 一体式配药注射器及其使用方法

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