WO2019017129A1 - Indwelling needle assembly - Google Patents

Indwelling needle assembly Download PDF

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Publication number
WO2019017129A1
WO2019017129A1 PCT/JP2018/023127 JP2018023127W WO2019017129A1 WO 2019017129 A1 WO2019017129 A1 WO 2019017129A1 JP 2018023127 W JP2018023127 W JP 2018023127W WO 2019017129 A1 WO2019017129 A1 WO 2019017129A1
Authority
WO
WIPO (PCT)
Prior art keywords
outer needle
opening
slit
portion
needle base
Prior art date
Application number
PCT/JP2018/023127
Other languages
French (fr)
Japanese (ja)
Inventor
大輔 中川
一成 河内
Original Assignee
株式会社トップ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to JP2017142274A priority Critical patent/JP2019022544A/en
Priority to JP2017-142274 priority
Application filed by 株式会社トップ filed Critical 株式会社トップ
Publication of WO2019017129A1 publication Critical patent/WO2019017129A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02Access sites
    • A61M39/04Access sites having pierceable self-sealing members
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02Access sites
    • A61M39/06Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22Valves or arrangement of valves
    • A61M39/26Valves closing automatically on disconnecting the line and opening on reconnection thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body

Abstract

Provided is an indwelling needle assembly that makes it possible to completely evacuate blood remaining inside of an outer needle base in a short amount of time. The indwelling needle assembly 1 is provided with an outer needle 2, an outer needle base 3, a hemostatic valve 4, a ventilation filter 44, and a connection member 5. The connection member 5 is provided with: a fitting section 51 fitted to the tip of the outer needle base 3; an insertion section 52 that is inserted in a slit 45; a first opening 54 that opens on the rear end surface of the fitting section 51 and that communicates with a through hole 53; and a second opening 55 that opens on a side surface of the insertion section 52 on a side symmetrical with the first opening 54 with respect to the axis, and that communicates with the through hole 53.

Description

Indwelling needle assembly

The present invention relates to an indwelling needle assembly.

Conventionally, an outer needle base provided with a luer taper portion capable of supporting an outer needle at a tip end portion and capable of connecting a luer terminal to a rear end portion, a breathable hemostatic valve disposed inside the outer needle base, and the hemostatic valve There is known an indwelling needle assembly provided with a connection member for opening and closing the opening (see, for example, Patent Document 1).

In the indwelling needle assembly, the hemostatic valve comprises a hollow bottomed cylindrical body and is provided with an openable / closable slit at the bottom of the hollow bottomed cylindrical body. On the other hand, the connection member is formed of a hollow cylindrical body integrally formed at the tip of the inside of the outer needle base. The hollow cylindrical body forming the connection member is tapered toward the slit of the hemostatic valve, and is inserted into the slit to open the hemostatic valve.

In the indwelling needle assembly, the inner needle is inserted into the outer needle from the rear end through the inside of the hemostatic valve, and the sharp tip of the inner needle is protruded from the tip of the outer needle In the condition, puncture the blood vessel of the vein. At this time, the inner needle is provided with an opening that opens into the outer needle base between the hemostatic valve and the connection member, and when a blood vessel is punctured, blood is introduced into the inside of the outer needle base from the opening. Flow out. Therefore, it is possible to confirm that the inner needle has been punctured in the blood vessel by configuring the outer needle base with a transparent or translucent material and visually recognizing the blood flowing out from the opening.

Once the inner needle is punctured into the blood vessel, the outer needle is advanced along the inner needle to puncture the blood vessel. Then, by removing the inner needle while the outer needle is in a state of being punctured in the blood vessel, the outer needle is indwelled in a state of being punctured in the blood vessel.

In the indwelling needle assembly, the hemostatic valve is pushed by the luer terminal when the luer terminal provided at the distal end of the infusion device or the like is inserted into the rear end in a state where the outer needle is punctured by the blood vessel. As a result, the connection member is inserted into the slit of the hemostatic valve to open the hemostatic valve. As a result, a drug solution or the like supplied from the infusion device is fed into the blood vessel through the outer needle.

However, if the blood that has flowed out to the inside of the outer needle group is retained as it is, there is a problem that it becomes a breeding source of bacteria or a thrombus source.

In order to solve the above problem, the connection member is disposed on the rear end side of the hemostatic valve, and the connection member is pushed toward the tip end by the luer terminal and inserted into the slit. There has been proposed an indwelling needle assembly having an opening on the side surface of the tip of the connection member (see, for example, Patent Document 2).

According to the indwelling needle assembly described in the patent document 2, the blood remaining in the outer needle group is washed away by flowing out the liquid medicine or the like supplied from the infusion device through the opening and flows into the blood vessel. It is supposed to be able to

Japanese Patent Publication No. 2016-506855 Publication Patent No. 5651597

However, in the indwelling needle assembly described in Patent Document 2, since the drug solution etc. flows out from the opening provided on the side surface of the connecting member tip projecting to the tip side of the slit of the hemostatic valve, the outer needle base There is a disadvantage that it may take a long time to discharge blood remaining in the region far from the opening of the connecting member tip, or the discharge may be incomplete.

An object of the present invention is to provide an indwelling needle assembly capable of eliminating such a disadvantage and completely draining blood staying inside the outer needle base in a short time.

In order to achieve the above object, the indwelling needle assembly according to the present invention comprises an outer needle formed of a hollow cylindrical body and held in a state of being punctured by a blood vessel, and a hollow cylindrical body formed of the outer needle An outer needle base having a luer tapered portion capable of connecting a luer terminal at its rear end while supporting, and a hemostatic valve provided with an outer needle base which can see through the inside, and an openable and closable slit on a surface orthogonal to the axial direction of the outer needle base A gap between an inner peripheral surface of the outer needle base and an outer peripheral surface of the hemostatic valve, and a gas passing filter while blocking a liquid, and a hollow cylindrical body, the inside of the outer needle base An indwelling needle assembly including: a connection member disposed at a tip end of the head, the rear end being inserted into the slit when the hemostatic valve is pushed in the distal direction by the luer terminal, and communicating the front and back of the slit; And the connection member is fitted to the tip inside the outer needle base And an insertion portion having a diameter smaller than that of the fitting portion which is connected to the rear end side of the fitting portion and inserted into the slit, and at least a rear end surface of the fitting portion opens to communicate with the hollow cylindrical interior A first opening, and a second opening opening on the side of the insertion portion on the side symmetrical to the first opening with respect to the axis and communicating with the inside of the hollow cylindrical shape. I assume.

In the indwelling needle assembly according to the present invention, as in the conventional indwelling needle assembly, the inner needle is inserted from the rear end into the inside of the outer needle through the inside of the hemostasis valve to sharpen the inner needle. The tip is punctured into the blood vessel of the vein, and blood is allowed to flow out of the opening of the inner needle into the outer needle base. At this time, air is present inside the outer needle base. However, in the indwelling needle assembly according to the present invention, since the ventilation filter is externally fitted to the hemostatic valve, the air is exhausted through the ventilation filter, and the inside of the outer needle base is smoothly filled with the blood. It is filled. At this time, since the outer needle group can see through the inside, it is possible to confirm that the inner needle has been punctured by the blood vessel by visually observing the blood flowing out from the opening from the outside.

When the inner needle is punctured into the blood vessel, the outer needle is advanced along the inner needle to puncture the blood vessel, and the outer needle is punctured into the blood vessel by removing the inner needle. It can be detained.

Next, in a state where the outer needle is punctured into the blood vessel, when the luer terminal provided at the tip of the infusion device or the like is inserted into the rear end of the indwelling needle assembly, the hemostatic valve is moved by the luer terminal. By being pushed, it abuts on the connection member. Then, the insertion portion of the connection member is inserted into the slit of the hemostasis valve to open the hemostasis valve so that the slit communicates with each other. As a result, a drug solution or the like supplied from the infusion device is fed into the blood vessel through the outer needle.

In the indwelling needle assembly according to the present invention, a drug solution or the like supplied from the infusion device flows into the outer needle through the hollow cylindrical portion of the connection member. At this time, a part of the drug solution or the like flows out from the second opening of the connection member into the inside of the outer needle base, and is filled inside the outer needle base through the periphery of the insertion portion of the connection member. Blood is flushed through the first opening to the outer needle. Therefore, according to the indwelling needle assembly of the present invention, the blood staying inside the outer needle base can be completely drained in a short time and returned from the first opening into the blood vessel through the outer needle. it can.

By the way, although it is desirable that the slit of the hemostatic valve is formed at the center of the bottom of the hollow bottomed cylindrical body forming the hemostatic valve, it may be formed off the center of the bottom depending on processing accuracy. However, it may be difficult to insert the connection member into the slit.

Therefore, in the indwelling needle assembly according to the present invention, it is preferable that the fitting portion of the connection member be loosely fitted to the tip inside the outer needle base. The connection member is capable of inclining the insertion portion at an arbitrary angle with respect to the axis of the outer needle base because the fitting portion is loosely fitted to the inside tip end portion of the outer needle base. .

As a result, in the indwelling needle assembly according to the present invention, when the insertion portion inclined with respect to the axis of the outer needle base points the slit of the hemostatic valve, the insertion portion can be inserted into the slit . Therefore, it can respond also when the said slit is formed out of the center of the bottom part of a hollow bottomed cylindrical body.

Explanatory sectional drawing which shows the structure of the indwelling needle assembly of this invention. The perspective view which shows the structure of the connection member of the indwelling needle assembly of this invention shown in FIG. FIG. 2 is an explanatory cross-sectional view showing the operation of the indwelling needle assembly of the present invention shown in FIG. 1; IV-IV sectional view taken on the line of FIG. FIG. 7 is an explanatory cross-sectional view showing another operation of the indwelling needle assembly of the present invention shown in FIG. 1;

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

As shown in FIG. 1, the indwelling needle assembly 1 according to the present embodiment includes an outer needle 2 formed of a hollow cylindrical body, an outer needle base 3 supporting the outer needle 2 at its tip, and an outer needle base 3. The hemostatic valve 4 is provided, and the connection member 5 disposed between the outer needle 2 in the outer needle base 3 and the hemostatic valve 4 is provided.

The outer needle base 3 is a hollow cylindrical body made of a transparent or translucent resin, and has a small diameter support portion 31 for supporting the outer needle 2 formed at the tip end, and gradually from the support portion 31 toward the rear end portion A diameter-increasing enlarged diameter portion 32, a first straight body portion 33 connected to the rear end portion of the large diameter portion 32, a circumferential convex portion 34 connected to the rear end portion of the straight barrel portion 33 and a circumferential convex portion And a luer tapered portion 36 connected to the rear end of the straight body 35 and gradually expanding in diameter from the straight body 35 toward the rear end. ing.

The hemostatic valve 4 is a hollow bottomed cylindrical body made of a soft resin, and a bottom portion 41 forming a surface orthogonal to the axial direction of the outer needle base 3, and a trunk portion 42 extending in the rear end direction from the bottom portion 41 And a flange 43 formed at the rear end of the body 42. A cylindrical ventilation filter 44 is externally fitted to the body portion 42, and the ventilation filter 44 seals a gap between the inner peripheral surface of the outer needle base 3 and the outer peripheral surface of the body portion 42 of the hemostatic valve 4. There is. The ventilation filter 44 is a porous body made of a hydrophobic resin, and allows passage of gas such as air while blocking passage of liquid such as blood.

The hemostatic valve 4 is disposed from the second straight body portion 35 of the outer needle base 3 to the luer taper portion 36 with the bottom portion 41 facing the tip side, and the second straight body portion via the ventilation filter 44. It is made slidable along the inner circumferential surface of 35. Further, the hemostatic valve 4 is provided with an openable / closable slit 45 substantially at the center of the bottom portion 41, and the outer peripheral surface of the flange portion 43 is provided with a gap with the inner peripheral surface of the luer tapered portion 36.

The connection member 5 is a hollow cylindrical body made of a hard resin, and is accommodated between the enlarged diameter portion 32 and the circumferential convex portion 34 inside the outer needle base 3. The connecting member 5 is, as shown in an enlarged manner in FIG. 2, a fitting portion 51 loosely fitted to the enlarged diameter portion 32 located at the tip of the inside of the outer needle base 3, and the rear end side of the fitting portion 51 And an insertion portion 52 connected to the slit 45 and inserted into the slit 45. The insertion portion 52 is smaller in diameter than the fitting portion 51, and is formed so as to gradually decrease in diameter toward the rear end.

Further, the connection member 5 includes a through hole 53 penetrating the fitting portion 51 and the insertion portion 52, and a first opening 54 opened from the rear end surface to the side surface of the fitting portion 51 and communicating with the through hole 53 A second opening 55 opened in the side surface of the insertion portion 52 and communicating with the through hole 53 on the side symmetrical to the first opening 54 with respect to the axis is provided. Furthermore, the connection member 5 is provided with a flat portion 56 on the side symmetrical to the second opening 55 with respect to the axis of the insertion portion 52. The first opening 54 may be open at least on the rear end surface of the fitting portion 51 and in communication with the through hole 53.

Next, the operation of the indwelling needle assembly 1 of the present embodiment will be described.

When the indwelling needle assembly 1 is used, first, in the state shown in FIG. 1, the inner needle (not shown) is inserted from the rear end of the luer tapered portion 36 through the hemostasis valve 4 and the inside of the connection member 5 The blood vessel of the vein is punctured in a state where the sharp tip of the inner needle is projected from the tip of the outer needle 3. At this time, the inner needle has an opening between the hemostasis valve 4 and the connection member 5 and the second straight body 35 of the outer needle base 3, and when the blood vessel is punctured, the inner needle The blood flows into the inside of the second straight body 35.

At this time, although air is present inside the second straight body portion 35, the air is disposed on the outer periphery of the flange portion 43 through the ventilation filter 44 externally fitted to the body portion 42 of the hemostatic valve 4. The air is exhausted to the gap between the surface and the inner circumferential surface of the luer tapered portion 36. Therefore, the inside of the second straight body 35 is smoothly filled with the blood.

At this time, since the outer needle base 3 is made of a transparent or translucent resin, the inside of the second straight body portion 35 can be seen through from the outside, and the blood inside the second straight body portion 35 is visually recognized By doing this, it can be confirmed that the inner needle has been punctured in the blood vessel.

Next, when the inner needle is punctured into the blood vessel, the outer needle 3 is advanced along the inner needle to puncture the blood vessel. Then, by removing the inner needle while the outer needle 3 is in the state of being punctured by the blood vessel, the outer needle 3 can be indwelled in the state of being punctured by the blood vessel. At this time, since the hemostatic valve 4 is made of a soft resin, when the inner needle is removed, the slit 45 is closed by its own elasticity, which can prevent backflow of blood.

Next, in the indwelling needle assembly 1, as shown in FIG. 3, the luer terminal 6 provided at the tip of the infusion device or the like is inserted into the luer taper portion 36, and the hemostatic valve 4 is pushed to the tip side by the luer terminal 6. Be moved. Then, the insertion portion 52 of the connection member 5 is inserted into the slit 45 formed in the bottom 41 of the hemostatic valve 4 to open the hemostatic valve 4. As a result, the slit 45 is communicated with the front and rear of the slit 45 by the connection member 5, and the drug solution or the like supplied from the infusion device is sent from inside the hemostasis valve 4 and the connection member 5 into the blood vessel through the outer needle 2.

At this time, as shown in FIG. 4, the main flow S 1 of the chemical solution or the like flows into the inside of the outer needle 2 through the through hole 53 of the connection member 5. since comprises two openings 55, tributary S 2 part of the drug solution or the like flows out of the second opening 55 is formed. By inserting portion 52 of the connecting member 5 is inserted into the slit 45, the second opening 55 is in a state extending over the front and rear of the slit 45, the distal end surface of the tributaries S 2 of the liquid medicine or the like is slit 45 Spill out along the

Tributaries S 2, such as the chemical solution, formed after flowing out of the second opening 55, it flows in the circumferential direction along the outer periphery of the insertion portion 52, on the side serving as the second opening 55 and symmetrical with respect to the axis The flat portion 56 flows from the flat portion 56 into the first opening 54 formed on the side symmetrical to the second opening 55 with respect to the axis and opening at the rear end surface of the fitting portion 51. Since the first opening 54 communicates with the through hole 53, a tributary S 2 that has flowed into the first opening 54 flows into the through hole 53 from the first opening 54, joins the main flow S 1 .

As a result, sweeping away the blood that is accumulated on the periphery of the insertion portion 52 inside the outer needle hub 3 by branch S 2, it can be made to flow from the periphery of the insertion portion 52 into the interior of the outer needle 2, short the blood The inside of the outer needle group 3 can be completely drained in time.

Further, the slit 45 of the hemostatic valve 4 may be formed out of the center of the bottom portion 41 depending on processing accuracy. However, in the indwelling needle assembly 1 of the present embodiment, as shown in FIG. 1, the fitting portion 51 of the connection member 5 is loosely fitted to the enlarged diameter portion 32 of the outer needle base 3, and the fitting portion There is a gap between the outer peripheral surface of 51 and the inner peripheral surfaces of the enlarged diameter portion 32 and the first straight body portion 33.

Therefore, as shown in FIG. 5, the connecting member 5 can be inclined at an arbitrary angle with respect to the axis O of the outer needle base 3, and the slit 45 is formed out of the center of the bottom 41 of the hemostatic valve 4. When the insertion portion 52 inclined with respect to the axis O of the outer needle base 3 points the slit 45, the insertion portion 52 can be inserted into the slit 45.

DESCRIPTION OF SYMBOLS 1 ... Indwelling needle assembly, 2 ... outer needle, 3 ... outer needle base, 4 ... hemostatic valve, 5 ... connection member, 6 ... luer terminal, 36 .. luer taper part, 44. venting filter, 45. slit, 51 .. Mating part, 52 ... insertion part, 54 ... first opening, 55 ... second opening.

Claims (2)

  1. An outer needle made of a hollow cylindrical body and indwelled in a state of being punctured by a blood vessel;
    An outer needle base having a hollow cylindrical body and supporting the outer needle at its tip end, and having a luer tapered portion at its rear end to which a luer terminal can be connected;
    A hemostasis valve provided with an openable / closable slit on a surface orthogonal to the axial direction of the outer needle base;
    A ventilation filter for sealing a gap between an inner circumferential surface of the outer needle base and an outer circumferential surface of the hemostatic valve to pass gas while blocking liquid;
    The hollow cylindrical body is disposed at the distal end of the inside of the outer needle base, and when the hemostatic valve is pushed in the distal direction by the luer terminal, the rear end is inserted into the slit and the front and rear of the slit An indwelling needle assembly comprising:
    The connecting member is a fitting portion to be fitted to the inner front end portion of the outer needle base, and a smaller diameter insertion than the fitting portion connected to the rear end side of the fitting portion and inserted into the slit. Part, a first opening which is open at least at the rear end face of the fitting part and which communicates with the hollow cylindrical interior, and a side face of the insertion part on the side symmetrical to the first opening with respect to the axis And a second opening communicating with the hollow cylindrical interior.
  2. The indwelling needle assembly according to claim 1, wherein the fitting portion of the connection member is loosely fitted to an inner tip of the outer needle base.
PCT/JP2018/023127 2017-07-21 2018-06-18 Indwelling needle assembly WO2019017129A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2017142274A JP2019022544A (en) 2017-07-21 2017-07-21 Indwelling needle assembly
JP2017-142274 2017-07-21

Publications (1)

Publication Number Publication Date
WO2019017129A1 true WO2019017129A1 (en) 2019-01-24

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Application Number Title Priority Date Filing Date
PCT/JP2018/023127 WO2019017129A1 (en) 2017-07-21 2018-06-18 Indwelling needle assembly

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JP (1) JP2019022544A (en)
TW (1) TW201907974A (en)
WO (1) WO2019017129A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0392600A (en) * 1989-09-04 1991-04-17 Kiyoshi Kasugai Vane pump
JP2002263197A (en) * 2001-03-12 2002-09-17 Medikit Kk Indwelling catheter
JP2012517327A (en) * 2009-02-11 2012-08-02 ベクトン・ディキンソン・アンド・カンパニーBecton, Dickinson And Company System and method for providing a flow control valve for a medical device
JP2014515627A (en) * 2011-03-07 2014-07-03 ベクトン・ディキンソン・アンド・カンパニーBecton, Dickinson And Company System and method for providing a catheter assembly
JP5651597B2 (en) * 2009-10-16 2015-01-14 テルモ株式会社 Indwelling needle and indwelling needle assembly
JP2015080707A (en) * 2013-10-24 2015-04-27 株式会社トップ Indwelling needle
WO2015133279A1 (en) * 2014-03-05 2015-09-11 テルモ株式会社 Catheter assembly

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0392600A (en) * 1989-09-04 1991-04-17 Kiyoshi Kasugai Vane pump
JP2002263197A (en) * 2001-03-12 2002-09-17 Medikit Kk Indwelling catheter
JP2012517327A (en) * 2009-02-11 2012-08-02 ベクトン・ディキンソン・アンド・カンパニーBecton, Dickinson And Company System and method for providing a flow control valve for a medical device
JP5651597B2 (en) * 2009-10-16 2015-01-14 テルモ株式会社 Indwelling needle and indwelling needle assembly
JP2014515627A (en) * 2011-03-07 2014-07-03 ベクトン・ディキンソン・アンド・カンパニーBecton, Dickinson And Company System and method for providing a catheter assembly
JP2015080707A (en) * 2013-10-24 2015-04-27 株式会社トップ Indwelling needle
WO2015133279A1 (en) * 2014-03-05 2015-09-11 テルモ株式会社 Catheter assembly

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JP2019022544A (en) 2019-02-14
TW201907974A (en) 2019-03-01

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