JP3544697B2 - Chemical injection device - Google Patents

Chemical injection device Download PDF

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Publication number
JP3544697B2
JP3544697B2 JP05596094A JP5596094A JP3544697B2 JP 3544697 B2 JP3544697 B2 JP 3544697B2 JP 05596094 A JP05596094 A JP 05596094A JP 5596094 A JP5596094 A JP 5596094A JP 3544697 B2 JP3544697 B2 JP 3544697B2
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Japan
Prior art keywords
needle
tip
collar
drug solution
container
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JP05596094A
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Japanese (ja)
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JPH07255846A (en
Inventor
盛皓 須藤
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Daikyo Seiko Ltd
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Daikyo Seiko Ltd
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Description

【0001】
【産業上の利用分野】
本発明は薬液を人体に投与する注入器具に関して、簡便な樹脂針を具有することにより薬液を保存容器から間接的に又は直接人体に注入し得る注入器具に関する。
【0002】
【従来の技術】
薬液を人体に注入する方法には、皮内注射、筋肉注射、静脈内注射、点滴静脈注射、高カロリー輸液方法等があり、該方法に適用している器具としては注射器にて、直接、間接、単独又は複用の際に使用してきた。そのうち先端に針管を具有する針ハブと注射筒先端の針リブ構造とを組み合わせて使用することを特徴とする針管−針リブ組立体型注射器が米国特許第3,402,713号明細書として知られている。
また、上記米国特許の注射器の先端部分組立体は製造上困難な点があったのでこれを改良し、さらに針ハブと針リブの結合性、螺合性を向上した技術として、特開昭58−141155号、同59−11869号公報が提案されている。
【0003】
【発明が解決しようとする課題】
薬液を人体に投与する器具としては注射器による率が極めて大きい。このような注射器針としてはステンレス製が多用されているが、ステンレス鋼板から製造されるため、製造工程上、薬液投与の際、使用後、廃棄処分時等における危害が大きく問題視されている。
本発明はこのような問題点を解消した取扱いが容易で安全、かつ衛生性に優れた薬液注入器具を提供しようとするものである。
【0004】
【課題を解決するための手段】
上記課題を解決する手段として本発明は、先端に金属針を固定し他端がテーパ状に広がる針ハブを、薬液を保持する容器であってその一方の端部に突出したカラーと該カラー内に同軸に設けられ容器内部と連通したチップを有し、該チップが該針ハブ内部の空間に嵌合し且つ該カラーの内周面のリブが該針ハブのフランジと螺合できるようにされてなる容器、と組み合わせることにより該容器内の薬液を金属針に導通できるようにした薬液注入器具において、該チップがカラー端部より突出し鋭刃な針先の側面に針口を有する針管に形成され、さらに該針管のキャップを有してなり、(1)該チップ単独で薬液を注入する場合及び(2)該針ハブを該カラーに結合して該チップと針ハブの双方で薬液を注入する場合の2つの用途に使い分け可能としたことを特徴とする薬液注入器具を提供する。
本発明の特に好ましい実施態様として、上記容器が注射筒又は輸液バックである薬液注入器具が挙げられる。
本発明において上記針管が外周部に溝を有し、該溝部で切断可能に構成されてなるものは、そのままで金属針ハブ等と組み合わせて使用するほかに、溝部で切断すると従来タイプの針リブ組立体の形式でも使用できるので、好都合である。
本発明においては、上記針管の外径は上記溝より上記カラー側において1.5〜8mm、長さが該カラー先端から5〜30mm突出する長さであるものが特に好ましい。
また、本発明においては上記容器本体、カラー、チップ、針管が一体に合成樹脂で成形されてなるものは、金属針が不要となる場合もあるので、取扱上の簡便性と安全性、廃棄処理の面で特に好ましい。
【0005】
【作用】
以下、本発明を図面に基づき説明する。図1は本発明の薬液注入器具の一実施態様である注射器の各部分を(a) 〜(c) に示した概略説明図である。
図1の(a) に示すように注射筒1の先端部2に注射筒1の開口部3に続いて軸線方向に突出するチップ6があり、該チップ6は、図1の(c) 示す金属針13の針基部分である針ハブ12の空間15内に嵌着できるようにしてある。チップ6の径方向外方にはチップ6と同心円的にカラー5を設けてあり、該カラー5の内周面には周方向に互いに等間隔をなして螺旋線状リブ7が径方向斜内方に向けて形成してある。チップ6内部は注射筒1の開口部3と連通しているが、カラー5は注射筒1内部とは連通していない。リブ7の傾斜内に針ハブ12のフランジ14を螺旋状に配置して針ハブ12を嵌着することにより、ロック機構4内に金属針13が固定できる。このロック機構は従来と同様である。
本発明においては、チップ6が軸線方向においてカラー5の端部24より前方に突出しており、該チップ6の突出部を針管10、先鋭な鋭刃の針先8を有する針口9にしてあり、該針管10内は注射筒1内と導通している。針先8、針口9、針管10はキャップ16にて被うことにより安全性が確保され、かつ衛生的に取り扱える。
【0006】
本発明において各部分の寸法は特に限定されるものではないが、実用されているこの種の器具、針ハブ、輸液器具との組み合わせの点から、例えば該針管10の太さは該溝よりカラー側で外径1.5〜8mmが適し、長さはカラー先端24から5〜30mm突出する程度、好ましくは8〜25mm突出する程度が好適である。
また、針口9は側口とすることが好ましい。この理由は貫通の際に生じるゴム片をなくしたいためである。
注射筒1には筒1内に筒内面を摺動可能なピストン19を設け、ピストン19の外部にはキャップ20を設けてある。薬液投与時にはキャップ20をはずし、図1の(b) に示すようなピストン19の後部の溝22に係合する先端を有する押棒21により該ピストン19を筒先端側に押し込めるようにしてある。
【0007】
図2は本発明の注入器具のロック機構の一例を示す概略断面図である。図2の注入器具においては、図2の(a) に示すように針管10の外周に溝11を設け、図2の(b) に示すような該溝11に係合できる突起17を設けたゴム栓18で包み被い、針口9、針先8を密封することによって、図3に示すように注射筒1内に薬液23を充填することができる。密封性が良いこと、小面積の針口9でのみ薬液とキャップが接触するので薬液23の変質を防ぎ高品質に保存できる。
【0008】
以上に説明したように本発明の注入器具は緊急時の使用に適した多種類の薬液に応用し得る注射器となる。また本発明の注入器具を輸液バックに適用する場合には混注口を設け、例えばタコ管、Y字管、ト型管などカテーテルに接続して投与できる。危険な注射針を使用しなくてよいので、器具の取扱は容易で、針による危害もなく、廃棄物は一般的な樹脂製品の処理方法に準じればよい。
【0009】
図4に本発明の薬液注入器具の一実施態様である輸液バックの概略説明図を示す。輸液バック25の薬液26としては、例えば食塩水、ブドウ糖注射液、注射用蒸留水などである。輸液バック25の本体は、例えばエチレン−酢酸ビニル共重合物、ポリエチレン、エチレン−プロピレン共重合体、ポリカーボネートなどの可撓性シート状物をフィルムに成形して、例えば高周波融着法、超高周波融着法などにより融着部27を熱融着することにより形成できる。その他、輸液バックには混注口28、ハンガー29、補助懸垂孔30を設けてある。
本発明の薬液注入器具は輸液バック25と一体に成形された円筒形にしたチップ6先端をさらに細く突出させて、針管10、針口9、鋭刃な針先8を形成してある。針管10は輸液装置に組み立てられたタコ管、Y字管、ト型管又はカテーテルに直接連結することにより予めバック内に充填しておいた輸液の薬液26を投与することができる。すなわち、この場合、本発明は金属製針を使用しない装置である。
また、本発明の注入器具を適用した輸液バックは、針管に設けた外周溝11に係合する突起17を有するゴム栓18にて密封されているので、投与時まで薬液を高品質に保持できる。
【0010】
なお、本発明の注入器は針管6、針先9がチップ先端に突出したまま、針ハブ−金属針13を組み立てることもできる。すなわち、針ハブ12の空間15内部にに針管10を入れてロックする機構である。
図5は本発明の薬液注入器具の一実施態様である輸液バックに、従来の針ハブ12のついた金属針13を使用している例の部分拡大断面図である。輸液バックのカラー5とチップ6の間に針ハブ12をねじ込みフランジ部分をカラー5の内周面のリブ7と螺合させてロックし、針ハブ12の空間15内部には輸液バッグの針管10、針口9が位置し、樹脂針の外部に金属針をつけた状態で薬液を投与し得ることを示す。
また、本発明の注入器具は針管10の外周溝11にてチップ先端より切断して、従来どおり環状リブ7の間に金属針のフランジ14をねじ込みロックして使用することもできる。
【0011】
本発明の薬液注入器具に使用する樹脂の素材としては、この種の技術分野で一般に使用されている素材を用いることができる。すなわち、オレフィン系化合物を重合してなる樹脂、またオレフィン系化合物を重合体の主成分とする樹脂、あるいはこれらと合成ゴムの混合物、さらに合成樹脂体を有機過酸化物、電子線などにて一部架橋したものを用いてもよい。さらに上記の樹脂組成物に対し、エチレンン・ビニルアルコール、エチレン−酢酸ビニル共重合体又は該重合体のケン化物、ナイロンおよびアモルファスナイロンなどの一層以上を積層したものも好ましい実施態様である。
特に、オレフィン系化合物として環状オレフィン系化合物あるいは架橋多環式炭化水素化合物を重合体成分とする樹脂は本発明に好適な素材であり、さらに該樹脂体を有機過酸化物、電子線で架橋したものは耐熱性が向上するので好ましい。
【0012】
本発明の薬液注入器具の各部分の成形加工方法については特に問題なく、公知の樹脂成形技術を適用して、射出成形、フィルム状樹脂の積層、パリソンのブロー成形等を組み合わせて行い、成形後に各部分を組み立てる。
【0013】
【発明の効果】
本発明は薬液注入器具において、ロック機構付きの薬液注入筒に合成樹脂製注入針をチップ先端に設けることにより、下記の効果を奏している。
(1)輸液又は輸血セットに組み入れるタコ管、Y字管、ト型管又はカテーテル等の器具を組み入れる作業を簡便に行なうことができる。
(2)金属製針の使用、使用頻度、使用量が減少できるので、針による危害、廃棄物処理等における安全性が向上する。
(3)注射筒あるいは輸液バックとして予め薬液を充填、保存する場合、密封性が高く、かつ薬液を高品質に保存できる。
【図面の簡単な説明】
【図1】は本発明の薬液注入器具の一実施態様の各部分を示した概略説明図である。
【図2】は本発明の薬液注入器具の一実施態様におけるロック機構を説明する概略断面図である。
【図3】は本発明の薬液注入器具の一実施態様において薬液を充填した状態を示す断面図である。
【図4】は本発明の薬液注入器具を輸液バックに適用した一実施態様を示す概略説明図である。
【図5】は本発明の薬液注入器具の一具体例において、金属針を先端に有する針ハブを取り付けた例を示す概略断面図である。
【符号の説明】
1 注射筒、 2 先端部、 3 開口部、
4 ロック機構、 5 カラー、 6 チップ、
7 リブ、 8 針先、 9 針口、
10 針管、 11 溝、 12 針ハブ、
13 金属針、 14 フランジ、 15 空間、
16 針キャップ 17 環状突起、 18 ゴム栓、
19 ピストン、 20 キャップ、 21 押棒、
22 ピストン嵌合部、 23 薬液、 24 カラー端部、
25 輸液バック、 26 薬液、 27 溶着部、
28 混注口、 29 ハンガー、 30 補助懸垂孔。
[0001]
[Industrial applications]
TECHNICAL FIELD The present invention relates to an injection device for administering a drug solution to a human body, which has a simple resin needle and can inject a drug solution into a human body indirectly or directly from a storage container.
[0002]
[Prior art]
Methods for injecting a drug solution into the human body include intradermal injection, intramuscular injection, intravenous injection, intravenous drip injection, and high calorie infusion method, and the like. , Used alone or in combination. A needle tube-needle rib assembly type syringe is disclosed in U.S. Pat. No. 3,402,713, wherein a needle hub having a needle tube at the distal end and a needle rib structure at the distal end of a syringe barrel are used in combination. ing.
Also, the tip subassembly of the syringe disclosed in the above-mentioned U.S. Pat. JP-A-141155 and JP-A-59-11869 have been proposed.
[0003]
[Problems to be solved by the invention]
As a device for administering a drug solution to the human body, the rate by a syringe is extremely large. Stainless steel needles are often used for such syringe needles, but since they are manufactured from a stainless steel plate, harm during the administration of a chemical solution, after use, at the time of disposal, etc., is a serious problem in the manufacturing process.
An object of the present invention is to provide a drug solution injection device which solves such problems and is easy to handle, safe and excellent in hygiene.
[0004]
[Means for Solving the Problems]
As a means for solving the above problems, the present invention provides a container holding a chemical solution, a metal hub fixed to the tip and a tapered hub extending at the other end, and a collar protruding from one end of the container. A tip that is coaxial with and communicates with the interior of the container so that the tip fits into the interior space of the needle hub and the ribs on the inner peripheral surface of the collar are threadably engageable with the flange of the needle hub. In a drug solution injection device which is capable of conducting a drug solution in the container to a metal needle by combining with the container, the tip is formed into a needle tube having a needle port on a side surface of a sharp needle tip protruding from a collar end. And a cap for the needle tube, and (1) a case where the tip alone is used to inject a drug solution; and (2) a case where the needle hub is connected to the collar to inject a drug solution with both the tip and the needle hub. Can be used for two purposes Providing drug solution injector, characterized in that the the.
As a particularly preferred embodiment of the present invention, a drug solution injection device in which the container is a syringe or an infusion bag is mentioned.
In the present invention, the needle tube having a groove in the outer peripheral portion and configured to be cut in the groove portion is used in combination with a metal needle hub or the like as it is, or a conventional type needle rib when cut in the groove portion. Advantageously, it can also be used in the form of an assembly.
In the present invention, it is particularly preferable that the outer diameter of the needle tube is 1.5 to 8 mm on the collar side from the groove, and the length projects from the tip of the collar to 5 to 30 mm.
In the present invention, the container body, the collar, the tip, and the needle tube are integrally formed of a synthetic resin, so that the metal needle may not be required in some cases. It is particularly preferred in terms of
[0005]
[Action]
Hereinafter, the present invention will be described with reference to the drawings. FIG. 1 is a schematic explanatory view showing each part of a syringe, which is one embodiment of the drug solution injection device of the present invention, in (a) to (c).
There is a chip 6 which projects following the opening 3 of the syringe barrel 1 in the axial direction in the distal end portion 2 of the syringe 1, as shown in (a) of FIG. 1, the chip 6, in (c) of FIG. 1 It can be fitted in the space 15 of the needle hub 12 which is the needle base of the metal needle 13 shown. A collar 5 is provided concentrically with the tip 6 radially outward of the tip 6, and helical linear ribs 7 are formed on the inner peripheral surface of the collar 5 at equal intervals in the circumferential direction in the radially oblique direction. It is formed toward. The inside of the tip 6 communicates with the opening 3 of the syringe barrel 1, but the collar 5 does not communicate with the inside of the syringe barrel 1. The metal needle 13 can be fixed in the lock mechanism 4 by fitting the needle hub 12 by spirally disposing the flange 14 of the needle hub 12 within the inclination of the rib 7. This lock mechanism is the same as the conventional one.
In the present invention, the tip 6 protrudes forward from the end 24 of the collar 5 in the axial direction, and the protruding portion of the tip 6 is a needle tube 10 and a needle port 9 having a sharp pointed needle tip 8. The inside of the needle tube 10 is electrically connected to the inside of the syringe barrel 1. The needle tip 8, the needle port 9, and the needle tube 10 are covered with the cap 16, so that safety is ensured and the needle can be handled hygienically.
[0006]
In the present invention, the dimensions of each part are not particularly limited. However, in view of the combination with a device of this kind, a needle hub, and an infusion device which are in practical use, for example, the thickness of the needle tube 10 is larger than that of the groove by the collar. The outer diameter of 1.5 to 8 mm is suitable on the side, and the length is about 5 to 30 mm protruding from the collar tip 24, and preferably about 8 to 25 mm protruding.
The needle port 9 is preferably a side port. The reason for this is that it is desired to eliminate a rubber piece generated at the time of penetration.
The injection cylinder 1 is provided with a piston 19 that can slide on the inner surface of the cylinder inside the cylinder 1, and a cap 20 is provided outside the piston 19. At the time of administration of the chemical solution, the cap 20 is removed, and the piston 19 is pushed toward the tip of the cylinder by a push rod 21 having a tip engaged with a groove 22 at the rear part of the piston 19 as shown in FIG.
[0007]
FIG. 2 is a schematic sectional view showing an example of the lock mechanism of the injection device of the present invention. In the injection device of FIG. 2, a groove 11 is provided on the outer periphery of the needle tube 10 as shown in FIG. 2A, and a projection 17 which can be engaged with the groove 11 as shown in FIG. 2B. By wrapping and covering the needle port 9 and the needle tip 8 with the rubber stopper 18, the drug solution 23 can be filled in the syringe barrel 1 as shown in FIG. 3. Since the liquid medicine and the cap come into contact only with the needle port 9 having a good sealing property and a small area, deterioration of the liquid medicine 23 can be prevented and high quality can be stored.
[0008]
As described above, the injection device of the present invention is a syringe applicable to various kinds of medical solutions suitable for emergency use. When the injection device of the present invention is applied to an infusion bag, a co-injection port is provided, and the injection device can be connected to a catheter such as an octopus tube, a Y-shaped tube, and a D-shaped tube for administration. Since dangerous needles do not have to be used, the handling of the instruments is easy, there is no harm from the needles, and the waste can be in accordance with the general method for treating resin products.
[0009]
FIG. 4 is a schematic explanatory view of an infusion bag which is one embodiment of the drug solution injection device of the present invention. The liquid medicine 26 of the infusion bag 25 is, for example, saline, dextrose injection, or distilled water for injection. The main body of the infusion bag 25 is formed by forming a flexible sheet material such as an ethylene-vinyl acetate copolymer, polyethylene, ethylene-propylene copolymer, or polycarbonate into a film, for example, using a high-frequency fusion method, an ultra-high-frequency fusion method. It can be formed by thermally fusing the fusion portion 27 by a fusion method or the like. In addition, a co-infusion port 28, a hanger 29, and an auxiliary suspension hole 30 are provided in the infusion bag.
In the drug solution injector of the present invention, the tip of a cylindrical tip 6 formed integrally with the infusion bag 25 is made to protrude further thinly to form a needle tube 10, a needle port 9, and a sharp needle tip 8. The needle tube 10 can administer the infusion drug solution 26 previously filled in the bag by directly connecting to an octopus tube, a Y-shaped tube, a G tube, or a catheter assembled in the infusion device. That is, in this case, the present invention is an apparatus that does not use a metal needle.
Further, the infusion bag to which the infusion device of the present invention is applied is sealed with a rubber stopper 18 having a projection 17 which engages with the outer peripheral groove 11 provided in the needle tube, so that the drug solution can be held with high quality until administration. .
[0010]
In the injector of the present invention, the needle hub and the metal needle 13 can be assembled with the needle tube 6 and the needle tip 9 protruding from the tip of the tip. That is, it is a mechanism for locking the needle tube 10 by inserting it into the space 15 of the needle hub 12.
FIG. 5 is a partially enlarged sectional view of an example in which a metal needle 13 having a conventional needle hub 12 is used for an infusion bag which is one embodiment of the drug solution injection device of the present invention. The needle hub 12 is screwed between the collar 5 and the tip 6 of the infusion bag, and the flange portion is screwed and locked with the rib 7 on the inner peripheral surface of the collar 5. , The needle port 9 is located, and it is possible to administer the drug solution with the metal needle attached to the outside of the resin needle.
Further, the injection device of the present invention can be used by cutting the tip of the tip at the outer circumferential groove 11 of the needle tube 10 and screwing and locking the flange 14 of the metal needle between the annular ribs 7 as in the past.
[0011]
As a material of the resin used for the drug solution injector of the present invention, a material generally used in this kind of technical field can be used. That is, a resin obtained by polymerizing an olefin-based compound, a resin containing an olefin-based compound as a main component of a polymer, or a mixture of these and a synthetic rubber. A partially crosslinked material may be used. Further, a preferred embodiment is obtained by laminating one or more layers of the above resin composition such as ethylene vinyl alcohol, ethylene-vinyl acetate copolymer or a saponified product of the polymer, nylon and amorphous nylon.
In particular, a resin containing, as the olefinic compound, a cyclic olefinic compound or a crosslinked polycyclic hydrocarbon compound as a polymer component is a suitable material for the present invention, and the resinous material is further crosslinked with an organic peroxide and an electron beam. Those are preferred because they improve heat resistance.
[0012]
There is no particular problem about the molding method of each part of the drug solution injection device of the present invention, applying a known resin molding technique, performing injection molding, lamination of a film-like resin, blow molding of a parison, and the like, and after molding. Assemble each part.
[0013]
【The invention's effect】
The present invention provides the following effects by providing a synthetic resin injection needle at the tip of a tip in a chemical injection tube with a lock mechanism in a chemical injection device.
(1) The work of incorporating an instrument such as an octopus tube, a Y-shaped tube, a T-shaped tube, or a catheter to be incorporated into an infusion or blood transfusion set can be easily performed.
(2) Since the use, frequency and amount of use of the metal needle can be reduced, the safety in harm caused by the needle, waste disposal, and the like is improved.
(3) When a medicinal solution is previously filled and stored as a syringe or an infusion bag, the hermeticity is high and the medicinal solution can be stored with high quality.
[Brief description of the drawings]
FIG. 1 is a schematic explanatory view showing each part of an embodiment of a drug solution injector according to the present invention.
FIG. 2 is a schematic cross-sectional view illustrating a lock mechanism in one embodiment of the drug solution injector according to the present invention.
FIG. 3 is a cross-sectional view showing a state in which a drug solution is filled in one embodiment of the drug solution injector according to the present invention.
FIG. 4 is a schematic explanatory view showing one embodiment in which the drug solution injection device of the present invention is applied to an infusion bag.
FIG. 5 is a schematic cross-sectional view showing an example in which a needle hub having a metal needle at its tip is attached to a specific example of the drug solution injector of the present invention.
[Explanation of symbols]
1 syringe barrel, 2 tip, 3 opening,
4 lock mechanism, 5 colors, 6 chips,
7 ribs, 8 stitches, 9 stitches,
10 needle tube, 11 groove, 12 needle hub,
13 metal needle, 14 flange, 15 space,
16 needle cap 17 annular projection, 18 rubber stopper,
19 piston, 20 cap, 21 push rod,
22 Piston fitting part, 23 Chemical solution, 24 Collar end part,
25 infusion bag, 26 chemical solution, 27 welding part,
28 mixed spout, 29 hanger, 30 auxiliary suspension hole.

Claims (5)

先端に金属針を固定し他端がテーパ状に広がる針ハブを、薬液を保持する容器であってその一方の端部に突出したカラーと該カラー内に同軸に設けられ容器内部と連通したチップを有し、該チップが該針ハブ内部の空間に嵌合し且つ該カラーの内周面のリブが該針ハブのフランジと螺合できるようにされてなる容器、と組み合わせることにより該容器内の薬液を金属針に導通できるようにした薬液注入器具において、該チップがカラー端部より突出し鋭刃な針先の側面に針口を有する針管に形成され、さらに該針管のキャップを有してなり、(1)該チップ単独で薬液を注入する場合及び(2)該針ハブを該カラーに結合して該チップと針ハブの双方で薬液を注入する場合の2つの用途に使い分け可能としたことを特徴とする薬液注入器具。A needle hub having a metal needle fixed at the tip and the other end expanding in a tapered shape, a container for holding a chemical solution, a collar protruding at one end thereof, and a tip coaxially provided in the collar and communicating with the inside of the container. A container in which the tip fits into the space inside the needle hub and a rib on the inner peripheral surface of the collar can be screwed with a flange of the needle hub. In a drug solution injector which is capable of conducting the drug solution to the metal needle, the tip is formed in a needle tube having a needle port protruding from the end of the collar and having a needle port on a side surface of a sharp-edged needle tip , and further having a cap for the needle tube. In other words, (1) the tip alone can be used to inject a drug solution, and (2) the needle hub can be connected to the collar to inject the drug solution into both the tip and the needle hub. A drug solution injection device characterized by the above-mentioned. 上記容器が注射筒又は輸液バックであることを特徴とする請求項1記載の薬液注入器具。The drug solution injection device according to claim 1, wherein the container is a syringe or an infusion bag. 上記針管が外周部に溝を有し、該溝部で切断可能に構成されてなる請求項2又は請求項3記載の薬液注入器具。4. The liquid injector according to claim 2, wherein the needle tube has a groove in an outer peripheral portion, and is configured to be cuttable by the groove. 上記針管の外径が上記溝より上記カラー側において1.5〜8mm、長さが該カラー先端から5〜30mm突出する長さであることを特徴とする請求項1ないし請求項3記載の薬液注入器具。4. The chemical solution according to claim 1, wherein the outer diameter of the needle tube is 1.5 to 8 mm on the side of the collar from the groove, and the length is a length protruding from the tip of the collar by 5 to 30 mm. Infusion device. 上記容器本体、カラー、チップとその突出した針管が合成樹脂で一体に成形されてなることを特徴とする請求項1ないし請求項4のいずれかに記載の薬液注入器具。5. The liquid injector according to claim 1, wherein the container body, the collar, the tip and the protruding needle tube are integrally formed of synthetic resin.
JP05596094A 1994-03-25 1994-03-25 Chemical injection device Expired - Lifetime JP3544697B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP05596094A JP3544697B2 (en) 1994-03-25 1994-03-25 Chemical injection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP05596094A JP3544697B2 (en) 1994-03-25 1994-03-25 Chemical injection device

Publications (2)

Publication Number Publication Date
JPH07255846A JPH07255846A (en) 1995-10-09
JP3544697B2 true JP3544697B2 (en) 2004-07-21

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