JP2004222795A - Instrument for mixed injection of medicine and method for manufacturing the same - Google Patents

Instrument for mixed injection of medicine and method for manufacturing the same Download PDF

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Publication number
JP2004222795A
JP2004222795A JP2003011339A JP2003011339A JP2004222795A JP 2004222795 A JP2004222795 A JP 2004222795A JP 2003011339 A JP2003011339 A JP 2003011339A JP 2003011339 A JP2003011339 A JP 2003011339A JP 2004222795 A JP2004222795 A JP 2004222795A
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Japan
Prior art keywords
ended needle
hollow double
cap
drug
infusion device
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Pending
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JP2003011339A
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Japanese (ja)
Inventor
Tomoyasu Yamashita
知康 山下
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Naigai Kasei Co Ltd
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Naigai Kasei Co Ltd
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Priority to JP2003011339A priority Critical patent/JP2004222795A/en
Publication of JP2004222795A publication Critical patent/JP2004222795A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an instrument for mixed injection of medicine which enables a double ended needle to be surely inserted to a medicine container and a transfusion container and is free from the leakage of transfusion, and to provide a method for manufacturing the instrument. <P>SOLUTION: The instrument 1 for mixed injection of medicine is provided with: a cylinder part 4 including a bottom part 2 and a cap part 3; a hollow double ended needle part 5; and a supporting part 6 which supports the needle part 5 vertically movably inside the cylinder part 4. A supporting part 6 is a bellow-like film expanding from the needle part 5 toward the inner periphery of the cylinder part 4, and the outer periphery of the film is integrated with the cylinder part 4. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、医療用容器内に薬剤を混合注入する薬剤混注用器具及びその製造方法に関する。
【0002】
【従来の技術】
生理食塩水やブドウ糖液などの輸液が分注されている輸液容器内に抗生物質(液体又は粉末)などの薬剤を混合注入し拡散溶解させた、薬剤を点滴することがある。抗生物質などの薬剤混注の際、雑菌等の混入を防止するため、ハーフキットと呼ばれる薬剤混注用器具が使用される。薬剤混注用器具の筒部内部に上下移動可能に挿嵌された中空両頭針が、薬剤容器(バイアル瓶)及び輸液容器を開封し、両者が連通され、薬剤が輸液容器内に混注される。例えば、特許文献1に開示された薬剤混注用器具がある。
【0003】
【特許文献1】
特開平7−213587号公報(第2〜3頁、第1図)。
【0004】
【発明が解決しようとする課題】
しかしながら、かかる薬剤混注用器具においては、筒部内に中空両頭針が挿嵌されているのみであるので、挿嵌状態により針の位置がずれ薬剤容器又は輸液容器開封ができないという問題があった。また、薬剤混注時又は点滴時に輸液が外に漏れ出すおそれもあった。また、中空両頭針が嵌合のみで保持されているため、嵌合の隙間から雑菌の混入の恐れもあった。
【0005】
本発明の目的は、確実に中空両頭針が薬剤容器及び輸液容器に挿入でき、しかも輸液漏れのない薬剤混注用器具及びその製造方法を提供することにある。
【0006】
【課題を解決するための手段】
上記目的を達成するために鋭意検討した結果、本発明は、キャップ部と底部を含む筒部と、中空両頭針部と、前記中空両頭針部を前記筒部内部に上下移動可能に支持する支持部とを備えたことを特徴とする薬剤混注用器具を採用した。
【0007】
支持部により中空両頭針部を筒部内部に上下移動可能に支持されているので、針の位置ずれがなく、薬剤容器及び輸液容器を確実に開封することができる。
【0008】
前記支持部は前記中空両頭針部から前記筒部の内周に向かって拡がる膜体であり、該膜体の外周が前記筒部に一体化された薬剤混注用器具とすることができる。
【0009】
前記中空両頭針部から前記筒部の内周に拡がる膜体が外周において前記筒部に一体化されているので、薬剤混入時又は点滴時に膜体の輸液容器側から輸液が外に漏れ出すことがない。なお、一体化する方法として、膜体である支持部の外周が底部とキャップ部と挟まれ、該底部及び該キャップ部と共に一体成形する方法、あるいは、該外周を底部又はキャップ部に溶着やシール成形した後該底部と該キャップ部とを一体成形する方法などがある。
【0010】
また、前記支持部は、前記中空両頭針部から前記筒部内部の内周に向かって拡がる蛇腹状膜体である薬剤混注用器具とすることもできる。
【0011】
膜体が蛇腹状膜体であれば、中空両頭針部の上下移動があっても膜体が伸縮するので、中空両頭針部を良好に支持でき、膜体自体の亀裂等の破損も防止できる。
【0012】
前記支持部の材質は、アクリロニトリルブタジエンスチレン(ABS)系、アクリロニトリルスチレン(AS)系、ポリプロピレン(PP)系、ポリエチレン(PE)系のいずれか又は2種以上混合の樹脂又はエラストマーである薬剤混注用器具とすることができる。
【0013】
特に、支持部がこれらのエラストマーであれば、中空両頭針部の上下移動があっても前記支持部が伸縮するので、同様に中空両頭針部を良好に支持することができる。
【0014】
前記中空両頭針部の材質がポリスチレン系樹脂である薬剤混注用器具とすることもできる。
【0015】
中空両頭針部の材質がアクリル系樹脂であれば、比較的硬度が高いので薬剤容器及び輸液容器を容易に開封できるが、支持部(膜体)と中空両頭針部との柔軟性を欠き、ヒンジ効果が劣る。そのため、ポリスチレン系樹脂が好適に使用できる。なお、ポリスチレン系樹脂には、汎用ポリスチレン樹脂(GPPS)、アクリロニトリルスチレン樹脂(AS)、メタクリル酸メチルスチレン樹脂(MS)、アクリロニトリルブタジエンスチレン樹脂(ABS)、スチレンブタジエンブロック重合体樹脂(SBS)等が例示できる。
【0016】
前記キャップ部がプルトップ構造により封止された薬剤混注用器具とすることもできる。
【0017】
キャップ部開封後、点滴等に使用する際、プルトップリングを吊り具として利用できる。
【0018】
また、上記のいずれかの薬剤混注用器具が、熱溶着、超音波溶着、インサート成形、螺着のいずれかより取り付けられた医療用容器も採用できる。
【0019】
すなわち、本発明の薬剤混注用器具は、医療用容器(輸液容器)に取り付けられて使用されるが、熱溶着、超音波溶着、インサート成形、螺着のいずれかより取り付けられた医療用容器が好適に使用できる。
【0020】
本発明の薬剤混注用器具は、中空両頭針部及び支持部を第1の金型で、キャップ部及び底部を第2の金型で、それぞれ1次成形し、成形された前記キャップ部を前記第2の金型の一方に残し、成形された前記底部を前記第2の金型の他方に残し、成形された前記中空両頭針部及び前記支持部を前記キャップ部又は前記底部のいずれか一方にインサートし、前記キャップ部及び前記底部を第2の金型で2次成形する薬剤混注用器具の製造方法で製造することができる。
【0021】
また、中空両頭針部及び支持部を第1の金型で、キャップ部又は底部のいずれか一方を第2の金型で、キャップ部又は底部のいずれか他方を第3の金型で、それぞれ1次成形し、成形された前記中空両頭針部及び前記支持部を第3の金型で成形されたキャップ部又は底部のいずれか他方にインサートし、前記キャップ部及び前記底部を第3の金型で2次成形する薬剤混注用器具の製造方法で製造することができる。
【0022】
上記いずれの方法においても、中空両頭針部及び支持部がインサートされ、キャップ部及び底部の成形が行われるので、支持部が筒部に確実に成形される。
【0023】
【発明の実施の形態】
以下、図面を用いて本発明に係る薬剤混注用器具について説明する。図1は、本発明に係る薬剤混注用器具を示す概略断面図である。図1において、1は薬剤混注用器具、2は底部、3はキャップ部、4は筒部、5は中空両頭針部、6は支持部である。
【0024】
中空両頭針部5の長手方向略中央部には、支持部6が取り付けられている。支持部6は中空両頭針部5から筒部4の内周に向かって拡がる膜体となっている。そして、膜体である支持部6の外周6cは筒部4に一体化されている。また、膜体は図示したように蛇腹状膜体であると、薬剤混注用時や点滴時の中空両頭針部5の上下移動に追従して伸縮可能が容易となる。前記伸縮に伴う亀裂等を防止する観点から、支持部6が中空両頭針部5及び筒部4の内周から略垂直に延びるように、取付部6a、6bを設けてもよい。
【0025】
底部2、キャップ部3により筒部4が構成されるが、底部2及びキャップ部3の縁部により支持部6の外周6bを挟み、熱や超音波によりシール成形されている。また、底部2、キャップ部3は、それぞれ封止部2a、3aにより封止されている。したがって、筒部4の内部を無菌状態に維持することができる。なお、キャップ部3の封止部3aをリング状のプルトップ構造とすることで、薬剤注入時に開封され残ったリング部を吊り具として点滴時に利用することができる。
【0026】
図2は、本発明の薬剤混注用器具の使用状態を示し、薬剤容器が開封された様子を示す。通常、生理食塩水やブドウ糖液等が充填された輸液容器20の口元部21のフランジ部21と底部2の底面部2cとが溶着等により取り付けられている。そして、薬剤注入時において、キャップ部3の封止部3aが開封され、中空両頭針部5の針部5aが露出する。薬剤容器7の封止部7aが針部5aにより開封され、薬剤(図示せず)が中空両頭針部5の中空部を通って下方(輸液容器20側)に移動する。
【0027】
図3に示すように、さらに薬剤容器7を下方に移動させると、中空両頭針部5が押され下方に移動し、針部5bが封止部2aを破り、さらに輸液容器の封止部22を破る。その結果、薬剤が中空両頭針部5の中空部を通って輸液容器に注入される。一連の中空両頭針部5の移動に際し、支持部6により均等に支持されているので、中空両頭針部5の針部5bは位置ずれすることなく、封止部2a及び輸液容器20の封止部22を破ることができる。また、針部5bが沿うガイド部2bを設けることもできる。
【0028】
なお、支持部6は中空両頭針部5から放射状に筒部4の内周に延びる複数の線体や片体であってもよいが、輸液漏れ防止の観点から膜体であることが好ましい。膜体であれば、中空両頭針部5と封止部2aとの間隙から輸液が漏れても、膜体により外部への輸液漏れを防ぐことができる。
【0029】
薬剤混注用器具1は、合成樹脂により成形されることが好ましい。特に、底部2及びキャップ部3はポリプロピレン系樹脂、ポリエチレン系樹脂、エラストマーにより好適に成形され、中空両頭針部5は、ポリプロピレン系樹脂、ポリエチレン系樹脂、ポリスチレン系樹脂により好適に成形される。また、支持部6は、アクリロニトリルブタジエンスチレン(ABS)系、アクリロニトリルスチレン(AS)系、ポリプロピレン(PP)系、ポリエチレン(PE)系のいずれか又は2種以上混合の樹脂又はエラストマーより好適に成形され、特にエラストマーであれば、蛇腹状としなくても容易に伸縮可能となる。なお、中空両頭針部5と支持部6とが異なる材質であっても2色成形により成形可能である。
【0030】
また、図4に示すように、薬剤混注用器具1は、熱溶着、超音波溶着、インサート成形、螺着のいずれの方法によっても輸液容器20に取り付けることが可能である。図4(a)は、輸液容器20の口元部21がフランジ21aを有し、フランジ21aと薬剤混注用器具1の底部の底面部2cとが熱溶着により取り付けられた様子を示す。図4(b)は、輸液容器20の口元部21が底部2を覆うように広げられフランジ21bを有し、フランジ21bと薬剤混注用器具1の筒部4から延びたフランジ4aとが超音波着により取り付けられた様子を示す。図4(c)は、輸液容器20の口元部21が底部2を覆うように広げられ、フランジ21bと薬剤混注用器具1の筒部4に設けられた突条4bとがインサート成形により取り付けられた様子を示す。図4(d)は、輸液容器20の口元部21が螺刻部21cを有し、薬剤混注用器具1の底部2から螺刻部筒部2dが延び、螺刻部21cと螺刻部筒部2dとが螺着により取り付けられた様子を示す。
【0031】
本発明に係る薬剤混注用器具の製造方法について説明する。図5(a)において、第1の金型10a、10bにより中空両頭針部5及び支持部6が成形される。このとき、中空両頭針部5と支持部6とが異なる材質であれば、2色成形により成形してもよい。第2の金型11a、11bは、底部2及びキャップ部3が同時に成形されるように2種の型を有し、底部2及びキャップ部3が同時に成形される(1次成形)。
【0032】
次に、図5(b)において、底部2が金型11bに、キャップ部3が金型11aに残留するように第2の金型11a、11bを型開きする(もちろん逆であってもよい)。そして、成形された中空両頭針部5及び支持部6をキャップ部3(又は底部2)にインサートする。そして、金型11a、11bを相対的にスライドさせる。そして、図5(c)において、各金型11a及び11bに残留した底部2及びキャップ部3が合わさるように、再び金型11a、11bを閉じ、筒部4(底部2及びキャップ部3)をシール成形する。このとき、支持部6が底部2とキャップ部3と挟まれているので、底部2及びキャップ部3と一体成形される(2次成形)。
【0033】
図6は、他の製造方法を示す概略断面図である。図6(a)において、第1の金型10a、10bにより中空両頭針部5及び支持部6が成形される。図6(b)において、第2の金型11a、11bにより底部2が成形される。図6(c)において、第3の金型12a、12bは、キャップ部3及び筒部4を成形する型を有し、まず、キャップ部3が成形される(1次成形)。
【0034】
次に、図6(d)において、第3の金型12a、12bが型開きされ、キャップ部3が筒部4を成形する型12cの12a側に移動され、さらに、成形された中空両頭針部5及び支持部6がインサートされる。また、成形された底部2は、筒部4を成形する型12cの12b側に移動される。そして、図6(e)において、底部2及びキャップ部3が合わさるように、再び金型12a、12bを閉じ、筒部4(底部2及びキャップ部3)をシール成形する。支持部6が底部2とキャップ部3と挟まれているので、底部2及びキャップ部3と一体成形される(2次成形)。なお、底部2とキャップ部3とが入れ替わっても同様に成形可能である。
【0035】
【発明の効果】
本発明によれば、薬剤混注用器具において、キャップ部と底部を含む筒部と、中空両頭針部と、前記中空両頭針部を前記筒部内部に上下移動可能に支持する支持部とを備えた構造としたので、使用時において針の位置ずれを防止することができる。また、前記支持部は前記中空両頭針部から前記筒部の内周に向かって拡がる(蛇腹状)膜体であり、該(蛇腹状)膜体の外周が前記筒部に一体化された構造とすることにより、薬剤混注用時や点滴時における輸液漏れを防止することができる。
【図面の簡単な説明】
【図1】本発明に係る薬剤混注用器具を示す概略断面図である。
【図2】本発明に係る薬剤混注用器具の使用状態を示す概略断面図である。
【図3】本発明に係る薬剤混注用器具の使用状態を示す概略断面図である。
【図4】本発明に係る薬剤混注用器具が輸液容器に取り付けられた様子を示す概略断面図で、(a)は熱溶着、(b)は超音波溶着、(c)はインサート成形、(d)は螺着により取り付けられた図である。
【図5】本発明に係る薬剤混注用器具の製造方法を示す概略断面図である。
【図6】本発明に係る薬剤混注用器具の製造方法を示す概略断面図である。
【符号の説明】
1 薬剤混注用器具
2 底部
3 キャップ部
4 筒部
5 中空両頭針部
6 支持部
20 輸液容器
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a drug co-infusion device for mixing and injecting a drug into a medical container, and a method for manufacturing the same.
[0002]
[Prior art]
In some cases, a drug such as an antibiotic (liquid or powder) is mixed and injected into an infusion container into which an infusion such as a physiological saline solution or a glucose solution is dispensed, and the drug is diffused and dissolved. At the time of drug co-injection of antibiotics and the like, a drug co-infusion device called a half kit is used in order to prevent contamination of bacteria and the like. A hollow double-ended needle inserted vertically into the cylindrical portion of the medicine co-infusion device opens the medicine container (vial bottle) and the infusion container, the two are communicated, and the medicine is co-injected into the infusion container. For example, there is a medicine co-infusion device disclosed in Patent Document 1.
[0003]
[Patent Document 1]
JP-A-7-213587 (pages 2-3, FIG. 1).
[0004]
[Problems to be solved by the invention]
However, in such a medicine co-infusion device, since the hollow double-ended needle is only inserted into the cylindrical portion, the position of the needle is shifted depending on the inserted state, and there is a problem that the medicine container or the infusion container cannot be opened. In addition, there is also a risk that the infusion may leak out during the co-injection or infusion. In addition, since the hollow double-ended needle is held only by fitting, there is a possibility that various bacteria may be mixed in from the gap of the fitting.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide a drug co-injection device which allows a hollow double-ended needle to be reliably inserted into a drug container and an infusion container and has no infusion leakage, and a method of manufacturing the same.
[0006]
[Means for Solving the Problems]
As a result of intensive studies to achieve the above object, the present invention provides a cylindrical portion including a cap portion and a bottom portion, a hollow double-ended needle portion, and a support for vertically supporting the hollow double-ended needle portion inside the cylindrical portion. And a drug co-injection device characterized by comprising:
[0007]
Since the hollow double-ended needle portion is vertically movably supported in the cylindrical portion by the support portion, there is no displacement of the needle, and the medicine container and the infusion container can be reliably opened.
[0008]
The support portion is a membrane extending from the hollow double-ended needle portion toward the inner periphery of the cylindrical portion, and the outer periphery of the membrane can be a drug co-infusion device integrated with the cylindrical portion.
[0009]
Since the membrane extending from the hollow double-ended needle to the inner periphery of the cylinder is integrated with the cylinder at the outer periphery, infusion may leak out from the transfusion container side of the membrane during drug mixing or drip. There is no. In addition, as a method of integrating, the outer periphery of the supporting portion, which is a film body, is sandwiched between the bottom and the cap portion, and is integrally molded with the bottom and the cap portion, or the outer periphery is welded or sealed to the bottom or the cap portion. After molding, there is a method of integrally molding the bottom portion and the cap portion.
[0010]
Further, the support portion may be a drug co-injection device that is a bellows-like membrane that extends from the hollow double-ended needle portion toward the inner periphery inside the cylindrical portion.
[0011]
If the film body is a bellows-like film body, the film body expands and contracts even if the hollow double-ended needle part moves up and down, so that the hollow double-ended needle part can be favorably supported and breakage of the film body itself such as cracks can be prevented. .
[0012]
The material of the support portion is acrylonitrile butadiene styrene (ABS), acrylonitrile styrene (AS), polypropylene (PP), polyethylene (PE) or a mixture of two or more resins or elastomers. It can be a device.
[0013]
In particular, when the support portion is made of these elastomers, the support portion expands and contracts even when the hollow double-ended needle portion moves up and down, so that the hollow double-ended needle portion can be similarly favorably supported.
[0014]
A drug co-infusion device in which the material of the hollow double-ended needle portion is a polystyrene resin can also be provided.
[0015]
If the material of the hollow double-ended needle portion is an acrylic resin, the drug container and the infusion container can be easily opened because of relatively high hardness, but lacks flexibility between the support portion (membrane) and the hollow double-ended needle portion, Poor hinge effect. Therefore, a polystyrene resin can be suitably used. The polystyrene resin includes general-purpose polystyrene resin (GPPS), acrylonitrile styrene resin (AS), methyl styrene methacrylate resin (MS), acrylonitrile butadiene styrene resin (ABS), styrene butadiene block polymer resin (SBS), and the like. Can be illustrated.
[0016]
A medicine co-infusion device in which the cap portion is sealed by a pull-top structure can also be provided.
[0017]
After opening the cap portion, the pull-top ring can be used as a hanging tool when used for infusion or the like.
[0018]
In addition, a medical container to which any of the above-mentioned instruments for drug co-infusion is attached by any one of heat welding, ultrasonic welding, insert molding, and screwing can be adopted.
[0019]
That is, the drug co-infusion device of the present invention is used by being attached to a medical container (infusion container). However, a medical container attached by any of heat welding, ultrasonic welding, insert molding, and screwing is used. It can be suitably used.
[0020]
In the medicine co-infusion device of the present invention, the hollow double-ended needle portion and the support portion are first-molded by the first mold, and the cap portion and the bottom portion are primarily molded by the second mold. Leaving one of the second molds, leaving the molded bottom part on the other of the second mold, and forming the hollow double-ended needle part and the support part into either the cap part or the bottom part. And the cap portion and the bottom portion are secondarily molded with a second mold.
[0021]
Further, the hollow double-ended needle portion and the support portion are formed by a first mold, one of the cap portion and the bottom portion is formed by a second mold, and the other of the cap portion and the bottom portion is formed by a third mold. The hollow double-ended needle portion and the support portion formed by primary molding are inserted into either the cap portion or the bottom portion formed by a third mold, and the cap portion and the bottom portion are inserted into the third metal. It can be manufactured by a method of manufacturing a drug co-injection device that is secondarily molded with a mold.
[0022]
In any of the above methods, the hollow double-ended needle portion and the support portion are inserted, and the cap portion and the bottom portion are formed, so that the support portion is reliably formed in the cylindrical portion.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the drug co-infusion device according to the present invention will be described with reference to the drawings. FIG. 1 is a schematic cross-sectional view showing a medicine co-infusion device according to the present invention. In FIG. 1, 1 is a drug co-infusion device, 2 is a bottom portion, 3 is a cap portion, 4 is a cylinder portion, 5 is a hollow double-ended needle portion, and 6 is a support portion.
[0024]
A support portion 6 is attached to a substantially central portion in the longitudinal direction of the hollow double-ended needle portion 5. The support portion 6 is a film that extends from the hollow double-ended needle portion 5 toward the inner periphery of the cylindrical portion 4. The outer periphery 6 c of the support 6, which is a film, is integrated with the cylindrical portion 4. When the membrane is a bellows-shaped membrane as shown in the figure, it becomes easy to expand and contract by following the up-and-down movement of the hollow double-ended needle part 5 during co-injection of a medicine or drip infusion. From the viewpoint of preventing cracks and the like due to the expansion and contraction, the attachment portions 6a and 6b may be provided so that the support portion 6 extends substantially perpendicularly from the inner periphery of the hollow double-ended needle portion 5 and the cylindrical portion 4.
[0025]
The cylindrical part 4 is constituted by the bottom part 2 and the cap part 3, and the outer periphery 6 b of the support part 6 is sandwiched by the edges of the bottom part 2 and the cap part 3, and is sealed by heat or ultrasonic waves. Further, the bottom portion 2 and the cap portion 3 are sealed by sealing portions 2a and 3a, respectively. Therefore, the inside of the cylindrical portion 4 can be maintained in an aseptic state. In addition, by making the sealing part 3a of the cap part 3 into a ring-shaped pull-top structure, the ring part which is opened at the time of injecting the medicine and the remaining ring part can be used as a hanging tool at the time of infusion.
[0026]
FIG. 2 shows a use state of the medicine co-infusion device of the present invention, and shows a state where the medicine container is opened. Usually, the flange portion 21 of the mouth portion 21 of the infusion container 20 filled with physiological saline, glucose solution, or the like, and the bottom portion 2c of the bottom portion 2 are attached by welding or the like. Then, at the time of drug injection, the sealing portion 3a of the cap portion 3 is opened, and the needle portion 5a of the hollow double-ended needle portion 5 is exposed. The sealing portion 7a of the drug container 7 is opened by the needle portion 5a, and the drug (not shown) moves downward (toward the infusion container 20) through the hollow portion of the hollow double-ended needle portion 5.
[0027]
As shown in FIG. 3, when the medicine container 7 is further moved downward, the hollow double-ended needle portion 5 is pushed and moves downward, the needle portion 5b breaks the sealing portion 2a, and further, the sealing portion 22 of the infusion container. break. As a result, the medicine is injected into the infusion container through the hollow portion of the hollow double-ended needle portion 5. During the series of movements of the hollow double-ended needle section 5, the needle section 5b of the hollow double-ended needle section 5 is not displaced and is sealed with the sealing section 2a and the infusion container 20 without being displaced. The part 22 can be broken. Further, a guide portion 2b along which the needle portion 5b extends can be provided.
[0028]
In addition, the support part 6 may be a plurality of linear bodies or pieces extending radially from the hollow double-ended needle part 5 to the inner periphery of the cylindrical part 4, but is preferably a membrane from the viewpoint of preventing infusion leakage. In the case of a membrane, even if an infusion leaks from the gap between the hollow double-ended needle portion 5 and the sealing portion 2a, the infusion can be prevented from leaking to the outside by the membrane.
[0029]
It is preferable that the medicine co-infusion device 1 is formed of a synthetic resin. In particular, the bottom portion 2 and the cap portion 3 are preferably formed of a polypropylene resin, a polyethylene resin, or an elastomer, and the hollow double-ended needle portion 5 is preferably formed of a polypropylene resin, a polyethylene resin, or a polystyrene resin. Further, the support portion 6 is preferably formed of any one of acrylonitrile butadiene styrene (ABS), acrylonitrile styrene (AS), polypropylene (PP), polyethylene (PE), or a mixture of two or more resins or elastomers. In particular, if it is an elastomer, it can be easily expanded and contracted without forming a bellows shape. In addition, even if the hollow double-ended needle part 5 and the support part 6 are made of different materials, they can be formed by two-color molding.
[0030]
Further, as shown in FIG. 4, the medicine co-infusion device 1 can be attached to the infusion container 20 by any method of heat welding, ultrasonic welding, insert molding, and screwing. FIG. 4A shows a state in which the mouth 21 of the infusion container 20 has a flange 21a, and the flange 21a and the bottom surface 2c at the bottom of the medicine co-infusion device 1 are attached by heat welding. FIG. 4 (b) shows that the mouth 21 of the infusion container 20 is extended so as to cover the bottom 2, has a flange 21 b, and the flange 21 b and the flange 4 a extending from the cylindrical portion 4 of the medicine co-infusion device 1 are connected by ultrasonic waves. Shows how it is attached by wearing. FIG. 4C shows that the mouth 21 of the infusion container 20 is expanded so as to cover the bottom 2, and the flange 21 b and the ridge 4 b provided on the tube 4 of the medicine co-infusion device 1 are attached by insert molding. It shows the appearance. FIG. 4D shows that the mouth portion 21 of the infusion container 20 has a threaded portion 21c, the threaded portion tube portion 2d extends from the bottom portion 2 of the medicine co-infusion device 1, and the threaded portion 21c and the threaded portion tube. 2 shows a state in which the portion 2d is attached by screwing.
[0031]
A method for manufacturing the drug co-infusion device according to the present invention will be described. In FIG. 5A, the hollow double-ended needle part 5 and the support part 6 are formed by the first molds 10a and 10b. At this time, if the hollow double-ended needle part 5 and the support part 6 are made of different materials, they may be formed by two-color molding. The second molds 11a and 11b have two types of molds so that the bottom 2 and the cap 3 are molded simultaneously, and the bottom 2 and the cap 3 are molded simultaneously (primary molding).
[0032]
Next, in FIG. 5B, the second molds 11a and 11b are opened so that the bottom portion 2 remains in the mold 11b and the cap portion 3 remains in the mold 11a (of course, the order may be reversed). ). Then, the formed hollow double-ended needle part 5 and the support part 6 are inserted into the cap part 3 (or the bottom part 2). Then, the molds 11a and 11b are relatively slid. Then, in FIG. 5 (c), the dies 11a and 11b are closed again so that the bottom 2 and the cap 3 remaining in the dies 11a and 11b fit together, and the cylinder 4 (the bottom 2 and the cap 3) is closed. Seal molding. At this time, since the support portion 6 is sandwiched between the bottom portion 2 and the cap portion 3, the support portion 6 is integrally formed with the bottom portion 2 and the cap portion 3 (secondary molding).
[0033]
FIG. 6 is a schematic sectional view showing another manufacturing method. In FIG. 6A, the hollow double-ended needle part 5 and the support part 6 are formed by the first molds 10a and 10b. In FIG. 6B, the bottom 2 is formed by the second molds 11a and 11b. In FIG. 6C, the third molds 12a and 12b have a mold for molding the cap portion 3 and the cylindrical portion 4. First, the cap portion 3 is molded (primary molding).
[0034]
Next, in FIG. 6D, the third molds 12a and 12b are opened, the cap portion 3 is moved to the side 12a of the mold 12c for forming the cylindrical portion 4, and the formed hollow double-ended needle is further moved. The part 5 and the support part 6 are inserted. Further, the formed bottom portion 2 is moved to the side 12b of the mold 12c for forming the cylindrical portion 4. Then, in FIG. 6E, the dies 12a and 12b are closed again so that the bottom 2 and the cap 3 fit together, and the cylinder 4 (the bottom 2 and the cap 3) is formed by sealing. Since the support part 6 is sandwiched between the bottom part 2 and the cap part 3, it is integrally formed with the bottom part 2 and the cap part 3 (secondary molding). In addition, even if the bottom part 2 and the cap part 3 are exchanged, it can be molded similarly.
[0035]
【The invention's effect】
According to the present invention, in a medicine co-infusion device, a tube portion including a cap portion and a bottom portion, a hollow double-ended needle portion, and a support portion for vertically supporting the hollow double-ended needle portion inside the cylindrical portion are provided. Because of this structure, it is possible to prevent the needle from shifting during use. Further, the support portion is a (bellows-shaped) film body extending from the hollow double-ended needle portion toward the inner periphery of the cylindrical portion, and the outer periphery of the (bellows-shaped) film body is integrated with the cylindrical portion. By doing so, it is possible to prevent the infusion from leaking at the time of co-infusion of a medicine or at the time of infusion.
[Brief description of the drawings]
FIG. 1 is a schematic sectional view showing a drug co-infusion device according to the present invention.
FIG. 2 is a schematic sectional view showing a use state of the drug co-infusion device according to the present invention.
FIG. 3 is a schematic sectional view showing a use state of the medicine co-infusion device according to the present invention.
FIG. 4 is a schematic cross-sectional view showing a state in which the drug co-infusion device according to the present invention is attached to an infusion container, (a) is heat welding, (b) is ultrasonic welding, (c) is insert molding, d) is a view attached by screwing.
FIG. 5 is a schematic cross-sectional view showing a method of manufacturing the drug co-infusion device according to the present invention.
FIG. 6 is a schematic cross-sectional view showing a method of manufacturing the drug co-infusion device according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Drug injection | pouring apparatus 2 Bottom part 3 Cap part 4 Tube part 5 Hollow double-ended needle part 6 Support part 20 Infusion container

Claims (9)

キャップ部と底部を含む筒部と、中空両頭針部と、前記中空両頭針部を前記筒部内部に上下移動可能に支持する支持部とを備えたことを特徴とする薬剤混注用器具。A drug co-infusion device comprising: a cylindrical portion including a cap portion and a bottom portion; a hollow double-ended needle portion; and a support portion for vertically supporting the hollow double-ended needle portion inside the cylindrical portion. 前記支持部は前記中空両頭針部から前記筒部の内周に向かって拡がる膜体であり、該膜体の外周が前記筒部に一体化された請求項1に記載の薬剤混注用器具。The drug co-infusion device according to claim 1, wherein the support portion is a membrane extending from the hollow double-ended needle portion toward the inner periphery of the cylindrical portion, and the outer periphery of the membrane is integrated with the cylindrical portion. 前記支持部は、前記中空両頭針部から前記筒部内部の内周に向かって拡がる蛇腹状膜体である請求項1に記載の薬剤混注用器具。2. The medicine co-infusion device according to claim 1, wherein the support portion is a bellows-like membrane extending from the hollow double-ended needle portion toward the inner periphery of the inside of the cylindrical portion. 3. 前記支持部の材質は、アクリロニトリルブタジエンスチレン(ABS)系、アクリロニトリルスチレン(AS)系、ポリプロピレン(PP)系、ポリエチレン(PE)系のいずれか又は2種以上混合の樹脂又はエラストマーである請求項1乃至3のいずれかに記載の薬剤混注用器具。The material of the support portion is any one of acrylonitrile butadiene styrene (ABS), acrylonitrile styrene (AS), polypropylene (PP), polyethylene (PE), or a mixture of two or more resins or elastomers. 4. The drug co-infusion device according to any one of claims 1 to 3. 前記中空両頭針部の材質がポリスチレン系樹脂である請求項1乃至4のいずれかに記載の薬剤混注用器具。The drug co-infusion device according to any one of claims 1 to 4, wherein a material of the hollow double-ended needle portion is a polystyrene resin. 前記底部がプルトップ構造により封止された請求項1乃至5のいずれかに記載の薬剤混注用器具。The medicine co-infusion device according to any one of claims 1 to 5, wherein the bottom is sealed by a pull-top structure. 請求項1乃至6のいずれかに記載の薬剤混注用器具が、熱溶着、超音波溶着、インサート成形、螺着のいずれかより取り付けられた医療用容器。A medical container to which the drug co-infusion device according to any one of claims 1 to 6 is attached by any one of heat welding, ultrasonic welding, insert molding, and screwing. 中空両頭針部及び支持部を第1の金型で、キャップ部及び底部を第2の金型で、それぞれ1次成形し、成形された前記キャップ部を前記第2の金型の一方に残し、成形された前記底部を前記第2の金型の他方に残し、成形された前記中空両頭針部及び前記支持部を前記キャップ部又は前記底部のいずれか一方にインサートし、前記キャップ部及び前記底部を第2の金型で2次成形する薬剤混注用器具の製造方法。The hollow double-ended needle portion and the support portion are first-molded with a first mold, and the cap portion and the bottom portion are primarily molded with a second mold, and the formed cap portion is left in one of the second molds. Leaving the molded bottom portion on the other side of the second mold, inserting the molded hollow double-ended needle portion and the support portion into one of the cap portion or the bottom portion, A method for producing a drug co-infusion device, wherein the bottom is secondarily molded with a second mold. 中空両頭針部及び支持部を第1の金型で、キャップ部又は底部のいずれか一方を第2の金型で、キャップ部又は底部のいずれか他方を第3の金型で、それぞれ1次成形し、成形された前記中空両頭針部及び前記支持部を第3の金型で成形されたキャップ部又は底部のいずれか他方にインサートし、前記キャップ部及び前記底部を第3の金型で2次成形する薬剤混注用器具の製造方法。The hollow double-ended needle part and the support part are primary molds, one of the cap part and the bottom part is the second mold, and the other one of the cap part and the bottom part is the third mold. The hollow double-ended needle portion and the support portion formed and inserted into the other of the cap portion or the bottom portion formed by the third mold, and the cap portion and the bottom portion are inserted by the third mold. A method for producing a drug co-infusion device to be subjected to secondary molding.
JP2003011339A 2003-01-20 2003-01-20 Instrument for mixed injection of medicine and method for manufacturing the same Pending JP2004222795A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007117276A (en) * 2005-10-26 2007-05-17 Nipro Corp Liquid transfer filler
WO2010130055A1 (en) * 2009-05-14 2010-11-18 Dna Genotek Inc. Closure, containing apparatus, and method of using same
JP2011523605A (en) * 2008-05-28 2011-08-18 ジーヴイエス ソシエタ ペル アチオニ Apparatus and associated method for molding and assembling chamber units for biomedical use
WO2013185382A1 (en) * 2012-06-14 2013-12-19 甘肃成纪生物药业有限公司 Sterile medicine dissolver
CN105997508A (en) * 2016-05-09 2016-10-12 苏州创扬医药科技股份有限公司 An attaching film type combination lid with a pressure pad
EP2313049B1 (en) 2008-07-18 2017-04-12 Allpure Technologies, Inc. Fluid transfer device
US11002646B2 (en) 2011-06-19 2021-05-11 DNA Genotek, Inc. Devices, solutions and methods for sample collection
US11572581B2 (en) 2002-06-07 2023-02-07 DNA Genotek, Inc. Compositions and methods for obtaining nucleic acids from sputum

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11572581B2 (en) 2002-06-07 2023-02-07 DNA Genotek, Inc. Compositions and methods for obtaining nucleic acids from sputum
JP2007117276A (en) * 2005-10-26 2007-05-17 Nipro Corp Liquid transfer filler
JP4572804B2 (en) * 2005-10-26 2010-11-04 ニプロ株式会社 Liquid transfer tool
JP2011523605A (en) * 2008-05-28 2011-08-18 ジーヴイエス ソシエタ ペル アチオニ Apparatus and associated method for molding and assembling chamber units for biomedical use
EP2313049B1 (en) 2008-07-18 2017-04-12 Allpure Technologies, Inc. Fluid transfer device
US8728414B2 (en) 2009-05-14 2014-05-20 Dna Genotek Inc. Closure, containing apparatus, and method of using same
CN102713555A (en) * 2009-05-14 2012-10-03 Dna吉诺特克股份有限公司 Closure, containing apparatus, and method of using same
WO2010130055A1 (en) * 2009-05-14 2010-11-18 Dna Genotek Inc. Closure, containing apparatus, and method of using same
US11002646B2 (en) 2011-06-19 2021-05-11 DNA Genotek, Inc. Devices, solutions and methods for sample collection
US11536632B2 (en) 2011-06-19 2022-12-27 DNA Genotek, Inc. Biological collection system
US11549870B2 (en) 2011-06-19 2023-01-10 DNA Genotek, Inc. Cell preserving solution
US11592368B2 (en) 2011-06-19 2023-02-28 DNA Genotek, Inc. Method for collecting and preserving a biological sample
WO2013185382A1 (en) * 2012-06-14 2013-12-19 甘肃成纪生物药业有限公司 Sterile medicine dissolver
CN105997508A (en) * 2016-05-09 2016-10-12 苏州创扬医药科技股份有限公司 An attaching film type combination lid with a pressure pad

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