JP2007275293A - Deaerator of syringe - Google Patents

Deaerator of syringe Download PDF

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JP2007275293A
JP2007275293A JP2006105430A JP2006105430A JP2007275293A JP 2007275293 A JP2007275293 A JP 2007275293A JP 2006105430 A JP2006105430 A JP 2006105430A JP 2006105430 A JP2006105430 A JP 2006105430A JP 2007275293 A JP2007275293 A JP 2007275293A
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container
syringe
air
barrel
liquid
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JP4199778B2 (en
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Toshiro Furukawa
稔郎 古川
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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
    • A61M5/3146—Priming, e.g. purging, reducing backlash or clearance

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deaerator of a syringe which prevents a liquid medicine in the syringe from getting splashed against sealing at the time when the syringe is deaerated. <P>SOLUTION: The deaerator of a syringe has a vessel 1, one end of which is opened and the other end of which is blocked, an elastic cap 5 fluid-tightly provided in the opening of the vessel and permitting the insertion of an injection needle 4 connected to the barrel 3 of the syringe 2 and a filter device 11 structured so as to pass gasses and cut off liquids, and communicatingly provided in the internal space of the vessel and permitting the discharge of gasses in the vessel. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

この発明はバイアルから注射器によって薬液を吸引した後、注射器内に薬液とともに流入する空気を排出するための注射器の空気抜き装置に関する。   The present invention relates to an air venting device for a syringe for discharging air flowing into the syringe together with the liquid medicine after the liquid medicine is sucked from the vial by the syringe.

注射器に薬液をバイアルから吸引する場合、注射器のバレルに接続された注射針を上記バイアルの弾性キャップに穿刺する。そして、上記バレルに挿入されたプランジャを引くことで、上記バイアル内の薬液をバレル内に吸引するようにしている。   When the drug solution is aspirated from the vial into the syringe, an injection needle connected to the barrel of the syringe is punctured into the elastic cap of the vial. And the chemical | medical solution in the said vial is attracted | sucked in a barrel by pulling the plunger inserted in the said barrel.

上記バレル内には薬液とともに空気が吸引されることがある。その場合、バレルを押し込んでバレル内の空気を注射針から吐出させるようにしている。バレル内の空気を吐出させる際、その空気とともに薬液が霧化して噴射されることがある。   Air may be sucked into the barrel together with the chemical solution. In that case, the barrel is pushed in and the air in the barrel is discharged from the injection needle. When the air in the barrel is discharged, the chemical liquid may be atomized and injected together with the air.

薬液がたとえば抗癌剤の場合、制癌作用がある反面、細胞毒性、変異原生或いは発癌性を有するものが多い。そのため、医師や看護師などの作業者が抗癌剤を取り扱う場合には、抗癌剤に接触しないよう、細心の注意が必要となる。   In the case where the drug solution is, for example, an anticancer agent, it has an anticancer effect, but many have cytotoxicity, mutagenesis or carcinogenicity. Therefore, when an operator such as a doctor or nurse handles an anticancer agent, it is necessary to pay close attention not to contact the anticancer agent.

特許文献１には薬液容器兼用注射器が示されている。この特許文献１に示された薬液容器兼用注射器薬液は、内部に薬液を充填して密封された筒状のカートリッジ（バレル）を有し、このカートリッジに注射針を螺着する。それによって、この注射針が上記カートリッジの一端を密封した密封部材を穿刺するから、上記カートリッジの他端を密封した栓にプランジャを接続することで、内部に薬液が収容された注射器となる。
特開平７−３１３５９７号公報 Patent Document 1 discloses a syringe that is also used as a chemical solution container. The drug solution container / syringe drug solution shown in Patent Document 1 has a cylindrical cartridge (barrel) sealed with a drug solution inside, and an injection needle is screwed onto the cartridge. As a result, the injection needle punctures a sealing member that seals one end of the cartridge. Therefore, the plunger is connected to a stopper that seals the other end of the cartridge, whereby a syringe containing a medical solution is obtained.
JP 7-313597 A

特許文献１に示された薬液兼用注射器を用いれば、注射器のバレル内に空気が入り込むことを防ぐことは可能である。しかしながら、通常は上述したように薬液はバイアルに収容されて取り扱われることが多い。   If the syringe for use with a drug solution disclosed in Patent Document 1 is used, it is possible to prevent air from entering the barrel of the syringe. However, usually, as described above, the drug solution is often handled in a vial.

そのため、バイアルの薬液を注射器に吸入するには、バイアルに注射針を刺して薬液を注射器によって吸引することになるから、その注射器のバレル内にバイアル内の空気が薬液とともに吸引されることになる。   Therefore, in order to inhale the drug solution from the vial into the syringe, the needle is inserted into the vial and the drug solution is sucked by the syringe. Therefore, the air in the vial is sucked together with the drug solution into the barrel of the syringe. .

とくに、バイアルから注射針を抜く際にバイアルから薬液が飛散するのを防止するため、注射器で薬液を吸引後、バイアル内の空気を注射器でわざわざ吸引してバイアル内部を負圧にしてから注射針を抜くことで、バイアルから薬液が飛散するのを防止するということが行われる。   In particular, in order to prevent the drug solution from splashing out of the vial when the syringe needle is removed from the vial, the syringe solution is sucked with a syringe and then the air inside the vial is bothed with a syringe to create a negative pressure inside the vial. By removing the, the chemical solution is prevented from scattering from the vial.

したがって、薬液を注射器に吸引した後、バレル内に薬液とともに吸引された空気を抜かなければならない。しかしながら、バレル内の空気抜きを行う際、バレル内の薬液が霧化して空気とともに噴射するということがあるから、作業者が薬液を吸引したり、身体に付着するという問題があった。   Therefore, after a chemical | medical solution is attracted | sucked to a syringe, the air aspirated with the chemical | medical solution must be extracted in a barrel. However, when the air in the barrel is vented, the chemical solution in the barrel may be atomized and sprayed together with air, so that there is a problem that the operator sucks the chemical solution or adheres to the body.

この発明は、注射器に薬液を吸引した後、その注射器から空気を抜く際、薬液が空気とともに霧化して周囲に飛散するのを防止できるようにした注射器の空気抜き装置を提供することにある。   An object of the present invention is to provide an air venting device for a syringe that can prevent the medicinal solution from being atomized together with the air and scattered around when the medicinal solution is sucked into the syringe and then the air is removed from the syringe.

この発明は、注射器のバレル内に薬液を吸引する際、このバレル内に流入した空気を抜くための空気抜き装置であって、
一端が開口し他端が閉塞された容器と、
この容器の開口に液密に設けられ上記バレルに接続される注射針が刺通可能な弾性キャップと、
気体を通し液体を遮断する構造であって、上記容器の他端部にこの容器の内部空間に連通して設けられ上記容器内の気体だけを排出可能とするフィルタ装置と
を具備したことを特徴とする注射器の空気抜き装置にある。 This invention is an air venting device for venting air that has flowed into the barrel when a drug solution is sucked into the barrel of the syringe,
A container with one end open and the other end closed;
An elastic cap that is liquid-tightly provided at the opening of the container and through which an injection needle connected to the barrel can be pierced;
A structure for blocking gas through and comprising a filter device provided at the other end of the container in communication with the internal space of the container and capable of discharging only the gas in the container. It is in the air venting device of the syringe.

上記容器の他端部には、上記フィルタ装置に連通するとともに、上記容器内に空気とともに排出された薬液が上記フィルタ装置に直接流れるのを阻止する液溜め管が内部に突出して設けられていることが好ましい。   At the other end of the container, there is provided a liquid reservoir tube that protrudes into the container and communicates with the filter device and prevents the chemical solution discharged together with air from flowing directly into the filter device. It is preferable.

上記容器内の中途部には、この容器の内部を２つの空間部に隔別する隔壁部材が液密に設けられ、この隔壁部材には、一端が上記容器の他端部側の空間部に向かって所定の長さで突出し他端が隔壁部材の板面から突出しない位置で開口して上記２つの空間部を連通する連通管が設けられていることが好ましい。   A partition member that separates the interior of the container into two spaces is provided in a liquid-tight manner in the middle of the container, and one end of the partition member is provided in the space on the other end side of the container. It is preferable that a communication pipe that opens at a position that protrudes by a predetermined length and that the other end does not protrude from the plate surface of the partition wall member and communicates the two space portions is provided.

この発明によれば、容器に設けられた弾性キャップに注射器のバレルに接続された注射針を刺し、上記バレル内を加圧して空気を抜けば、バレルから吐出される空気はフィルタ装置から容器の外部に逃げるから、バレル内から空気を抜くことができ、その際、バレルから空気とともに霧化して吐出する薬液はフィルタ装置を通過することがないから、外部に飛散するのを防止できる。   According to the present invention, when the injection needle connected to the barrel of the syringe is inserted into the elastic cap provided in the container and the inside of the barrel is pressurized to release air, the air discharged from the barrel is discharged from the filter device to the container. Since it escapes to the outside, the air can be extracted from the barrel. At that time, the chemical liquid atomized from the barrel together with the air does not pass through the filter device, so that it can be prevented from scattering to the outside.

以下、この発明の一実施の形態を図面を参照して説明する。
図１はこの発明の空気抜き装置を示し、この空気抜き装置は容器１を備えている。この容器１は一端が開口し、他端が閉塞された筒状をなしていて、その開口は弾性キャップ５によって液密に閉塞されている。この弾性キャップ５には、図２に示す注射器２のバレル３の先端に設けられた接続部３ａに接続された注射針４を穿刺することができる。なお、バレル３にはプランジャ６が液密な状態で摺動可能に収容されている。 An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 shows an air venting device according to the present invention, which is provided with a container 1. The container 1 has a cylindrical shape with one end opened and the other end closed, and the opening is liquid-tightly closed by an elastic cap 5. The elastic cap 5 can be pierced with an injection needle 4 connected to a connection portion 3a provided at the tip of the barrel 3 of the syringe 2 shown in FIG. A plunger 6 is accommodated in the barrel 3 so as to be slidable in a liquid-tight state.

上記容器１の閉塞された他端の外面には、容器１の内部に連通する接続管体７が外部に向かって突設されている。この接続管体７には、外径寸法が接続管体７の内径寸法とほぼ同じに設定された液溜め管８が挿通されている。この液溜め管８は一端部を上記容器１内に所定寸法突出させて設けられている。
なお、液溜め管８は接続管体７と別体とせず、接続管体７を容器１内に突出させてその突出部分を液溜め管８としてもよい。 On the outer surface of the other end of the container 1 that is closed, a connecting tube body 7 that communicates with the inside of the container 1 is provided so as to project outward. A liquid storage tube 8 whose outer diameter is set to be substantially the same as the inner diameter of the connection tube 7 is inserted into the connection tube 7. The liquid storage tube 8 is provided with one end projecting into the container 1 by a predetermined dimension.
The liquid storage tube 8 may not be separated from the connection tube 7, and the connection tube 7 may protrude into the container 1 and the protruding portion may be used as the liquid storage tube 8.

上記接続管体７にはフィルタ装置１１が接続される。このフィルタ装置１１は樹脂によって外径寸法が上記容器１の外径寸法と略同じに形成された中空円盤部１２を有する。この中空円盤部１２の一側面には上記接続管体７に気密に接続可能な筒状の接続部１３が設けられ、他側面には中空円盤部１２を介して上記接続管体７に連通する筒状の排気部１４が設けられている。   A filter device 11 is connected to the connecting pipe body 7. The filter device 11 has a hollow disk portion 12 that is formed of resin with an outer diameter dimension substantially the same as the outer diameter dimension of the container 1. A cylindrical connection portion 13 that can be airtightly connected to the connection tube body 7 is provided on one side surface of the hollow disk portion 12, and communicates with the connection tube body 7 via the hollow disk portion 12 on the other side surface. A cylindrical exhaust part 14 is provided.

上記中空円盤部１２にはフィルタシート１５が周縁部を挟持されて収容保持されている。このフィルタシート１５は、気体は通すが、液体を通過させることのない疎水性のものが用いられている。疎水性のフィルタシート１５の孔径は、たとえば０．２μｍである。   A filter sheet 15 is held and held in the hollow disk portion 12 with a peripheral edge portion interposed therebetween. The filter sheet 15 is made of a hydrophobic material that allows gas to pass but does not allow liquid to pass through. The pore size of the hydrophobic filter sheet 15 is, for example, 0.2 μm.

上記容器１内の中途部には、この容器１内を開放端側の第１の空間部１７と閉塞端側の第２の空間部１８に隔別する隔壁部材１９が装着されている。この隔壁部材１９はゴムなどの弾性材によって形成され、上記容器１内に圧入保持されて上記第１の空間部１７と第２の空間部１８を液密に隔別している。   A partition wall member 19 that separates the inside of the container 1 into a first space part 17 on the open end side and a second space part 18 on the closed end side is mounted in the middle part of the container 1. The partition member 19 is formed of an elastic material such as rubber, and is press-fitted and held in the container 1 to separate the first space portion 17 and the second space portion 18 in a liquid-tight manner.

上記隔壁部材１９には中心部からずれた位置、つまり上記液溜め管８に対して軸線を径方向に所定寸法ずらした位置に連通管２１が厚さ方向に貫通して設けられている。この連通管２１は上記容器１の閉塞端側に位置する一端が上記隔壁部材１９の一方の板面から上記第２の空間部１８へ所定寸法突出し、上記容器１の開口端側に位置する他端は上記隔壁部材１９の他側面とほぼ面一に開口している。   The partition wall member 19 is provided with a communicating pipe 21 penetrating in the thickness direction at a position shifted from the central portion, that is, at a position where the axis line is shifted by a predetermined dimension in the radial direction with respect to the liquid storage pipe 8. One end of the communication pipe 21 located on the closed end side of the container 1 protrudes from the one plate surface of the partition wall member 19 to the second space portion 18 by a predetermined dimension, and the other is located on the opening end side of the container 1. The end opens substantially flush with the other side of the partition member 19.

上記容器１の他端部の外周面には円筒状のスタンド部材２３が着脱可能に外嵌される。それによって、容器１はフィルタ装置１１が設けられた他端部を下にして立てて設置することができるようになっている。さらに、容器１の一端部には周方向に１８０度間隔で一対の鍔３４が径方向外方に向かって突設されている。容器１を倒して置いたときに、上記鍔３４によって容器１が回転するのが防止される。   A cylindrical stand member 23 is detachably fitted on the outer peripheral surface of the other end of the container 1. Thereby, the container 1 can be installed upright with the other end provided with the filter device 11 facing down. Further, a pair of ridges 34 project outwardly in the radial direction at one end of the container 1 at intervals of 180 degrees in the circumferential direction. When the container 1 is placed down, the container 1 is prevented from rotating by the hook 34.

上記注射器２によって図示しないバイアルから薬液を吸引したならば、この注射器２のバレル３に吸引された空気を上記構成の空気抜き装置を用いて排出する。すなわち、注射器２のバレル３から空気抜きを行うには、図３に示すように注射針４を容器１の開口端に設けられた弾性キャップ５に穿刺する。   When the drug solution is sucked from a vial (not shown) by the syringe 2, the air sucked into the barrel 3 of the syringe 2 is discharged using the air vent device having the above-described configuration. That is, in order to vent the air from the barrel 3 of the syringe 2, the injection needle 4 is punctured into the elastic cap 5 provided at the open end of the container 1 as shown in FIG.

なお、詳細は図示しないが、弾性キャップ５は消毒された状態でシートによって覆われている。したがって、弾性キャップ５に注射針４を穿刺するには、シートを剥がして行う。それによって、空気抜きを行うことで、注射針４が汚染されるのが防止される。また、容器１も弾性キャップ５と同様、消毒されている。   Although not shown in detail, the elastic cap 5 is covered with a sheet in a sterilized state. Therefore, to puncture the elastic cap 5 with the injection needle 4, the sheet is peeled off. As a result, the needle 4 is prevented from being contaminated by venting. Further, the container 1 is also sterilized like the elastic cap 5.

注射針４を弾性キャップ５に穿刺したならば、容器１とともに注射器２の注射針４を上に向けてバレル３内に入り込んだ空気をバレル３内の上端部、つまり接続部３ａ側に上昇させてからプランジャ６を押し込んで、バレル３内の空気を容器１内に噴出させる。   If the injection needle 4 is punctured into the elastic cap 5, the air that has entered the barrel 3 with the container 1 and the injection needle 4 of the syringe 2 facing upward is raised to the upper end of the barrel 3, that is, the connecting portion 3a side. After that, the plunger 6 is pushed in, and the air in the barrel 3 is ejected into the container 1.

バレル３から空気を噴出させることで容器１内の圧力が上昇するとともに、空気とともに薬液が霧化して噴出する。容器１内に噴出された空気と薬液のうち、空気は第１の空間部１７から連通管２１を通って第２の空間部１８に入り、そこから液溜め管８を通って接続管体７に接続されたフィルタ装置１１に流入する。フィルタ装置１１のフィルタシート１５は、液体は通さないが気体は通すから、容器１内に噴出された空気はフィルタシート１５を通って外部に流出する。   By ejecting air from the barrel 3, the pressure in the container 1 increases, and the chemical liquid is atomized and ejected together with the air. Of the air and the chemical liquid ejected into the container 1, the air enters the second space portion 18 from the first space portion 17 through the communication pipe 21, and from there through the liquid storage tube 8 to the connection pipe body 7. Flows into the filter device 11 connected to. Since the filter sheet 15 of the filter device 11 does not allow liquid to pass but allows gas to pass, the air ejected into the container 1 flows out through the filter sheet 15.

一方、注射器２から噴出された空気中に含まれる霧化した薬液は、フィルタ装置１１のフィルタシート１５によって外部に流出するのが阻止される。したがって、注射器２から噴射された薬液は容器１内に捕捉され、この容器１の外部に飛散することがないから、医師や看護士などの作業者が霧化した薬液を吸引したり、身体に付着させたりすることなく、注射器２内の空気を抜くことができる。   On the other hand, the atomized chemical liquid contained in the air ejected from the syringe 2 is prevented from flowing out by the filter sheet 15 of the filter device 11. Therefore, since the chemical liquid ejected from the syringe 2 is captured in the container 1 and does not scatter outside the container 1, an operator such as a doctor or a nurse can aspirate the atomized chemical liquid, The air in the syringe 2 can be extracted without being attached.

容器１内に噴射された薬液は、この容器１をフィルタ装置１１が設けられた他端端側を下に向けることで、第１の空間部１７から隔壁部材１９に設けられた連通管２１を通って第２の空間部１８に滴下される。   The chemical solution injected into the container 1 has the communication pipe 21 provided from the first space portion 17 to the partition wall member 19 through the other end of the container 1 provided with the filter device 11 downward. It passes through and drops into the second space 18.

同じ種類の薬液を１つもしくは複数のバイアルから複数本の注射器２に順次吸引させる場合、１つの容器１を用いて複数本の注射器２の空気抜きを行う。その場合、各注射器２から空気を抜く毎に、容器１の他端側を下に向ける。容器１の他端側、つまり第１の空間部１７側を下に向ければ、第１の空間部１７に噴射された薬液は、隔壁部材１９の板面に開口した連通管２１の他端開口から、この連通管２１を通って第２の空間部１８に滴下する。その際、連通管２１は液溜め管８に対して径方向にずれているから、連通管２１から滴下した薬液が液溜め管８内に入り込むのが防止できる。   When the same type of drug solution is sequentially aspirated from one or a plurality of vials to a plurality of syringes 2, the plurality of syringes 2 are vented using one container 1. In that case, every time air is extracted from each syringe 2, the other end side of the container 1 is directed downward. If the other end side of the container 1, that is, the first space portion 17 side is directed downward, the chemical liquid injected into the first space portion 17 is opened at the other end of the communication pipe 21 that is opened on the plate surface of the partition wall member 19. Then, it is dropped into the second space 18 through the communication pipe 21. At that time, since the communication pipe 21 is displaced in the radial direction with respect to the liquid storage pipe 8, it is possible to prevent the chemical liquid dropped from the communication pipe 21 from entering the liquid storage pipe 8.

したがって、２回目以降にバイアルに注射針４を刺し、図３に示すように容器１を逆さまにして空気抜きを行う際、隔壁部材１９に設けられた連通管２１の一端部が第２の空間部１８に所定寸法突出しているため、図３に示すように第２の空間部１８に溜まった薬液Ｌが隔壁部材１９の上面に溜まり、連通管２１の一端開口を通って第１の空間部１７に戻ることがない。   Therefore, when the injection needle 4 is inserted into the vial after the second time and the container 1 is turned upside down as shown in FIG. 3, one end of the communication pipe 21 provided in the partition wall member 19 is the second space portion. 18, the chemical solution L accumulated in the second space 18 accumulates on the upper surface of the partition wall member 19, passes through one end opening of the communication pipe 21, and passes through the first space 17. Will never return.

第１の空間部１７の開口を閉塞した弾性キャップ５は、注射針４が繰り返して穿刺されることで、その穿刺跡によって液密性が損なわれることがある。
一方、注射器２内に薬液を吸引した後、薬液とともに吸引された気泡を注射器２の注射針４が接続された接続部３ａ側に集めるために、容器１を逆さまにして注射針４を弾性キャップ５に穿刺するということがある。
このような理由によって容器１を逆さにすると、容器１内の薬液が上記弾性キャップ５の内面に溜まり、この弾性キャップ５に形成された穿刺跡から薬液が漏れ出る虞がある。 The elastic cap 5 that closes the opening of the first space portion 17 may be impaired in liquid-tightness due to the puncture trace, as the injection needle 4 is repeatedly punctured.
On the other hand, after the drug solution is sucked into the syringe 2, the container 1 is turned upside down so that the bubbles sucked together with the drug solution are collected on the connection part 3 a side to which the syringe needle 4 of the syringe 2 is connected. 5 may be punctured.
If the container 1 is turned upside down for such a reason, the chemical solution in the container 1 may accumulate on the inner surface of the elastic cap 5, and the chemical solution may leak from the puncture mark formed on the elastic cap 5.

しかしながら、この実施の形態では、上述したように隔壁部材１９には連通管２１の一端部を第２の空間部１８に突出させて設けている。そのため、弾性キャップ５に注射針４を刺して容器１を逆さにしても、隔壁部材１９の上面に溜まる薬液Ｌの高さが上記連通管２１の突出長さ以上とならなければ、薬液が第１の空間部１７に戻ることがない。   However, in this embodiment, as described above, the partition wall member 19 is provided with one end portion of the communication pipe 21 protruding from the second space portion 18. Therefore, even if the injection cap 4 is inserted into the elastic cap 5 and the container 1 is turned upside down, if the height of the drug solution L accumulated on the upper surface of the partition wall member 19 does not exceed the projecting length of the communication tube 21, the drug solution is There is no return to the first space portion 17.

したがって、１つの容器１を用いて複数本の注射器２の空気抜きを行うとき、容器１を逆さまにしても、弾性キャップ５の穿刺跡から薬液が滲み出て医師や看護師などの作業者に付着するのを防止することができる。   Therefore, when a plurality of syringes 2 are vented using a single container 1, even if the container 1 is turned upside down, the drug solution oozes out from the puncture mark of the elastic cap 5 and adheres to an operator such as a doctor or a nurse. Can be prevented.

第２の空間部１８には液溜め管８が容器１の内方へ突出して設けられている。そのため、第２の空間部１８に薬液が溜まっても、その薬液の水面が上記液溜め管８の突出高さ以下であれば、薬液は接続管体７を通ってフィルタ装置１１に流れることがない。   In the second space 18, a liquid storage tube 8 is provided so as to protrude inward of the container 1. Therefore, even if the chemical solution is accumulated in the second space portion 18, the chemical solution may flow through the connecting tube body 7 to the filter device 11 as long as the water level of the chemical solution is equal to or lower than the protruding height of the liquid reservoir tube 8. Absent.

フィルタ装置１１のフィルタシート１５は、空気は通すが液体は通すことのない疎水性である。そのため、薬液がフィルタ装置１１に流れてフィルタシート１５上に溜まると、フィルタシート１５の通気性が損なわれて注射器４から噴射された空気が容器１から抜け出ないことになる。それによって、空気抜き時に容器１内の圧力が上昇し、注射器２の空気抜きを円滑かつ確実に行えなくなる虞がある。   The filter sheet 15 of the filter device 11 is hydrophobic so that air can pass but liquid cannot pass. Therefore, when the chemical solution flows into the filter device 11 and accumulates on the filter sheet 15, the air permeability of the filter sheet 15 is impaired and the air injected from the syringe 4 does not escape from the container 1. As a result, the pressure in the container 1 rises when the air is vented, and there is a possibility that the syringe 2 cannot be vented smoothly and reliably.

しかしながら、上記液溜め管８によって薬液がフィルタ装置１１に流れるのが阻止されることで、このフィルタ装置１１の通気性が損なわれることがないから、注射器２の空気抜きを円滑かつ確実に行うことができる。   However, since the chemical reservoir is prevented from flowing into the filter device 11 by the liquid storage tube 8, the air permeability of the filter device 11 is not impaired. it can.

このように、この実施の形態の注射器２の空気抜き装置によれば、上述したように、注射器２の空気を抜くときに、空気とともに流出する薬液は、容器１内に確実に捕捉され、外部に飛散するということがないから、安全性を向上させることができる。   Thus, according to the air venting device of the syringe 2 of this embodiment, as described above, when the air of the syringe 2 is vented, the drug solution that flows out together with the air is reliably captured in the container 1 and externally discharged. Since it is not scattered, safety can be improved.

注射器２の空気を抜く際、容器１を逆さにしても、容器１内の隔壁部材１９に設けられた連通管２１によって、容器１内に捕捉された薬液が第２の空間部１８から第１の空間部１７に流れて容器１の開口を閉塞した弾性キャップ５の内面に溜まるということがない。そのため、弾性キャップ５に注射針４の穿刺跡があっても、その穿刺跡から薬液が滲み出るのを確実に防止することができる。   Even when the container 1 is turned upside down when the syringe 2 is evacuated, the drug solution captured in the container 1 by the communication pipe 21 provided in the partition wall member 19 in the container 1 is supplied from the second space portion 18 to the first space portion 18. It does not flow into the space portion 17 and accumulate on the inner surface of the elastic cap 5 that closes the opening of the container 1. Therefore, even if there is a puncture mark of the injection needle 4 on the elastic cap 5, it is possible to reliably prevent the drug solution from seeping out from the puncture mark.

容器１内の第２の空間部１８にはフィルタ装置１１が接続された接続管体７に連通する液溜め管８が容器１の内部に突出して設けられている。そのため、第２の空間部１８に滴下した薬液が接続管体７からフィルタ装置１１に流れるのが阻止されるから、フィルタ装置１１のフィルタシート１５に薬液が溜まって、その通気性が損なわれるのを防止することができる。   In the second space 18 in the container 1, a liquid reservoir pipe 8 communicating with the connecting pipe body 7 to which the filter device 11 is connected is provided so as to protrude into the container 1. Therefore, the chemical liquid dropped into the second space 18 is prevented from flowing from the connecting pipe body 7 to the filter device 11, so that the chemical liquid is accumulated in the filter sheet 15 of the filter device 11 and its air permeability is impaired. Can be prevented.

以上のことにより、注射器２からの空気抜きを安全に、しかも確実に行うことが可能となる。   With the above, it is possible to vent the air from the syringe 2 safely and reliably.

なお、上記一実施の形態では容器１に接続管体７を設け、この接続管体７にフィルタ装置１１を接続したが、容器１に接続管体７を設けず、容器１とフィルタ装置１１を一体成形してもよい。   In the above embodiment, the connecting tube 7 is provided in the container 1 and the filter device 11 is connected to the connecting tube 7. However, the container 1 and the filter device 11 are not provided in the container 1. You may form integrally.

この発明の一実施の形態を示す空気抜き装置の概略的構成を示す断面図。Sectional drawing which shows schematic structure of the air venting apparatus which shows one embodiment of this invention. 注射器の側面図。Side view of a syringe. 薬液を吸引した注射器の空気抜きを行うときの説明図。Explanatory drawing when performing air bleeding of the syringe which attracted | sucked the chemical | medical solution.

符号の説明Explanation of symbols

１…容器、２…注射器、３…バレル、４…注射針、７…接続管体、８…液溜め管、１１…フィルタ装置、１５…フィルタシート、１７…第１の空間部、１８…第２の空間部１９…隔壁部材、２１…連通管。   DESCRIPTION OF SYMBOLS 1 ... Container, 2 ... Syringe, 3 ... Barrel, 4 ... Injection needle, 7 ... Connection pipe body, 8 ... Liquid reservoir, 11 ... Filter apparatus, 15 ... Filter sheet, 17 ... 1st space part, 18 ... 1st 2 space part 19 ... partition member, 21 ... communication pipe.

Claims (3)

注射器のバレル内に薬液を吸引する際、このバレル内に流入した空気を抜くための空気抜き装置であって、
一端が開口し他端が閉塞された容器と、
この容器の開口に液密に設けられ上記バレルに接続される注射針が刺通可能な弾性キャップと、
気体を通し液体を遮断する構造であって、上記容器の他端部にこの容器の内部空間に連通して設けられ上記容器内の気体だけを排出可能とするフィルタ装置と
を具備したことを特徴とする注射器の空気抜き装置。 An air venting device for venting air that has flowed into the barrel when a liquid medicine is sucked into the barrel of the syringe,
A container with one end open and the other end closed;
An elastic cap that is liquid-tightly provided at the opening of the container and through which an injection needle connected to the barrel can be pierced;
A structure for blocking gas through and comprising a filter device provided at the other end of the container in communication with the internal space of the container and capable of discharging only the gas in the container. Syringe air venting device. 上記容器の他端部には、上記フィルタ装置に連通するとともに、上記容器内に空気とともに排出された薬液が上記フィルタ装置に直接流れるのを阻止する液溜め管が内部に突出して設けられていることを特徴とする請求項１記載の注射器の空気抜き装置。   At the other end of the container, there is provided a liquid reservoir tube that protrudes into the container and communicates with the filter device and prevents the chemical solution discharged together with air from flowing directly into the filter device. The air venting device for a syringe according to claim 1. 上記容器内の中途部には、この容器の内部を２つの空間部に隔別する隔壁部材が液密に設けられ、この隔壁部材には、一端が上記容器の他端部側の空間部に向かって所定の長さで突出し他端が隔壁部材の板面から突出しない位置で開口して上記２つの空間部を連通する連通管が設けられていることを特徴とする請求項１又は請求項２記載の注射器の空気抜き装置。   A partition member that separates the interior of the container into two spaces is provided in a liquid-tight manner in the middle of the container, and one end of the partition member is provided in the space on the other end side of the container. 2. A communication pipe is provided which projects at a predetermined length toward the end and opens at a position where the other end does not project from the plate surface of the partition wall member and communicates the two space portions. 3. The air venting device for a syringe according to 2.
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CN111407954A (en) * 2019-12-31 2020-07-14 张雪莉 PICC thrombolysis nursing method and device
CN111407954B (en) * 2019-12-31 2024-04-12 张雪莉 PICC thrombolysis nursing method and device
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