JP3743875B2 - Plastic double-ended needle - Google Patents

Plastic double-ended needle Download PDF

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Publication number
JP3743875B2
JP3743875B2 JP09055397A JP9055397A JP3743875B2 JP 3743875 B2 JP3743875 B2 JP 3743875B2 JP 09055397 A JP09055397 A JP 09055397A JP 9055397 A JP9055397 A JP 9055397A JP 3743875 B2 JP3743875 B2 JP 3743875B2
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Japan
Prior art keywords
double
ended needle
insertion port
container
container containing
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JPH1024089A (en
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英克 庄司
義樹 前崎
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Otsuka Pharmaceutical Co Ltd
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Otsuka Pharmaceutical Co Ltd
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Description

【０００１】
【発明の属する技術分野】
本発明は、溶解液入り容器と薬剤入り容器とを内部連通状態に結合し、後者容器内での薬剤溶解と、薬剤溶解液の前者容器内への移動を行うための両頭針に関する。
【０００２】
【従来の技術】
図１４は従来の両頭針Ａ′の一使用状況を示し、両頭針Ａ′は溶解液入り容器ａと、ビタミン剤、抗生剤などの薬剤入り容器ｂとを内部連通状態に結合している。この結合状態のもとに薬剤入り容器ｂ内での所定の薬剤溶解操作と、薬剤溶解液の溶解液入り容器ａ側への移動操作が行われ、薬剤溶解液の移動を終えた後は、両容器の結合が解かれる。
【０００３】
従来提供されている両頭針Ａ′には、針抜け順序を規制する手段は特になにも備えられていないので、両容器の結合を解くときに、両頭針Ａ′が溶解液入り容器ａ側に残る場合と薬剤入り容器ｂ側に残る場合とがあり、図１５に示すように前者容器ａ側に残る場合には、該容器ａ内が両頭針Ａ′を通じ外気に連通し容器内部が汚染される恐れがあった。
【０００４】
【発明が解決しようとする課題】
本出願人は先に、両頭針に係止突部を備え、該係止突部を薬剤入り容器の口部後端の凹段部に係止せしめることにより、薬剤入り容器側の針抜け抵抗を溶解液入り容器側より高くなるようになし、もって両頭針の針抜けを常に溶解液入り容器側で起こさせるという、針抜け順序規制の提案（例えば実開平７−１２１４１号公報参照）をなし、一応の成果を上げている。
【０００５】
ところが、両頭針はプラスチックから一体成形され、係止突部の下端の係止部には型抜きの必要性からどうしても角度を持たせることが必要になり、係止突部の適用だけでは係止力不足となり針抜け順序の規制が不安定となり、より一層の改善が望まれていた。
【０００６】
本発明はこのような要望に鑑みなされたものである。
【０００７】
【課題を解決するための手段】
本発明は、 溶解液入り容器の密閉口部に刺入可能な一方針部と、一方針部に接続していて薬剤入り容器の密閉口部に刺入可能な他方針部と、他方針部と同心状に一体に形成されていて上記薬剤入り容器の密閉口部を挿入できる実質的に筒状の差込口とを備え、差込口には、該差込口内に薬剤入り容器の密閉口部を挿入し他方針部を該密閉口部に刺入貫通した状態に於いて、該密閉口部の後端の凹段部に保有弾性に抗し係止する係止突部と、該密閉口部の周側部により差込口の内周面に向けて保有弾性に抗し強制的に伏倒されるリブ片とが備えられ、リブ片は、薬剤入り容器の密封口部の挿入方向において係止突部よりも後方に設けられ、かつ、差込口の内周面の円周方向に向けて傾斜し、リブ片の肉厚は、係止突部の最大突出高さよりも小さくなるように設定されていることを特徴とするプラスチック製両頭針に係る。
【０００８】
【発明の実施の形態】
以下に、本発明の一実施形態を添付図面に基づき説明すると次の通りである。
【０００９】
本発明両頭針の一実施形態が図１〜２に示され、該両頭針Ａはプラスチック例えばポリエチレン、ポリプロピレン等から例えば射出成形手段を適用して全体が同時一体成形される。
【００１０】
両頭針Ａは溶解液入り容器ａの密封口部ａ1に刺入可能な一方針部１と、該一方針部１に接続していて、薬剤入り容器ｂの密封口部ｂ1に刺入可能な他方針部２とを備え、これら針部１、２は円板状乃至これと類似する形状例えば正多角形状の針ホルダー３の中心部に貫通状態に保持されている。
【００１１】
両頭針Ａの各構成要素の内、上記針部１、２を除く部分は全てプラスチック製であり、針部１、２はプラスチック製及び金属製のいずれでもよい。後者の場合はインサート成形手段を適用し、他のプラスチック構成部分と同時一体成形することができる。
【００１２】
針ホルダー３は、他方針部２側の面に該針部２と同心の実質的に筒状の差込口４を一体に備えている。
【００１３】
筒状差込口４は薬剤入り容器ｂの密閉口部ｂ1の挿入をガイドするためのものであり、該口部ｂ1の外径と略々等しいか或いはこれより若干大きい内径を有し、その上部４ａは等間隔配置の複数個例えば４個のスリット５により４つの円弧状部４ａ1に分割され、下部４ｂは３６０°の全範囲に亘って連続している。
【００１４】
筒状差込口４の円弧状部４ａ1には、それぞれ上端寄りの部分に内方突出の係止突部６が形成されている。
【００１５】
係止突部６は、図１に示すように、円弧状部４ａ1の両端部を除く中央領域に、円弧上の２点を弦６ａ（図２参照）で結ぶような平面形状に形成されており、弦６ａの中点が最も突出高さが大きく、これより両端に至るに従い漸進的に突出高さを減ずるような構成になっている。
【００１６】
係止突部６は内型を抜くときにアンダーカット部となるので、平面積が小さいほど型を抜きやすくなる。上記平面形状はこの点を配慮したものである。また、筒状差込口４の上部４ａを先に述べたようにスリット５により円弧状部４ａ1に分割しておけば、該円弧状部４ａ1は外方へ撓み変形することが可能になるので、これもまた型抜き対策の１つとなる。
【００１７】
係止突部６の下端係止部６ｂには型を抜きやすくするために、図１に示すように、傾斜が与えられている。
【００１８】
また、上部６ｃには、薬剤入り容器ｂの密封口部ｂ1の挿入をガイドするために、傾斜を与えることができる。
【００１９】
筒状差込口４の内周面には、該差込口４内に薬剤入り容器ｂの密封口部ｂ1を差込嵌合した時、該口部ｂ1の周側部により保有弾性に抗し接線方向に向け押圧変形され図４に示すように伏倒状態となるリブ片７が形成される。該リブ片７には接線方向への押圧変形をひいては伏倒をスムーズに行わせるために、図３に示すように、予め接線方向（円周方向）に向け傾斜が与えられている。図３には直径線Ｌを基準に略々６０°傾斜させた場合が示されているが、傾斜角度は１０〜８０°好ましくは４５〜７０°程度の範囲から適宜選択決定すればよい。
【００２０】
リブ片７は 図４に示すように押圧変形ひいては伏倒状態に於いて上記差込口４の内周面と密封口部ｂ1の外周面との間に挟持され、これらの間に隙間８を発生させるので、その分、係止突部６の有効突出高さを減少させることになる。従って、リブ片７の肉厚は、係止突部６の最大突出高さよりも小さいことが必要であり、通常は最大突出高さの１／２以下、好ましくは１／５〜１／３程度の範囲内に設定される。
【００２１】
本実施形態に於いては、リブ片７は差込口４の下部４ｂ、即ち３６０°連続している部分に例えば９０°の間隔で４箇所に形成されている。この場合図示のようにスリット５の位置と一致させておけば、内型の型抜きが容易となり好ましい。
【００２２】
両頭針Ａの針ホルダー３の周縁には、下記に述べるサポートリング内への嵌装設置状態での安定化を図るために振れ止め部９が形成されている。振れ止め部９として図には筒状のものが示されているが、平面円弧状に分割されているような形状のものであってもよい。
【００２３】
図５〜６に本発明の他の実施形態が示されている。本実施形態によれば係止突部６１が延出角度範囲の全体に亘って略々同一高さに形成されている点及びリブ片７１が係止突部６１の下方に位置するように形成されている点を除いて図１〜２の実施形態のものと実質的に異なるところがない。尚、リブ片７１の上端は係止突部７１の近くまで延出している。
【００２４】
図１〜２に示す本発明一実施形態の両頭針Ａの一使用状況が図７〜９に示され、
該両頭針Ａは溶解液入り容器ａと薬剤入り容器ｂとの結合操作に便ならしめるために、図７に示すように、予め溶解液入り容器ａ側に備え付けられている。
【００２５】
両頭針Ａの備え付けのために、溶解液入り容器ａの密閉口部ａ1には、該口部ａ1より上方へ同心状に突出するプラスチック製のサポートリング１０が例えば密閉口部ａ1の下端外周部に設けたねじ結合部１１の箇所で適宜取り外しできるように取り付け固定されている。
【００２６】
両頭針Ａは上記サポートリング１０内に嵌装状態に設置され、この設置状態に於いて、図７に示す上動限界位置と図８に示す下動限界位置との間を摺動移動出来るようになっている。サポートリング１０の上端には両頭針Ａを内部に収容するような形態で保護キャップ１２が適宜取り外しできるように取り付けられている。図７に於いて、１３は両頭針Ａを所定位置に仮止めするための凹凸嵌合部である。
【００２７】
図８は両頭針Ａを介し、溶解液入り容器ａと薬剤入り容器ｂとを内部連通状態に結合した状態を示している。この結合状態は、図７に示す状態から保護キャップ１２を取り外し、次いで、下向きにした薬剤入り容器ｂの密閉口部ｂ1と両頭針Ａの差込口４とを位置あわせした状態で、該容器ｂの密閉口部ｂ1を差込口４内に強く押し込み、この押し込みにつれて両頭針Ａを下動限界位置まで一気に移動させることにより得られる。
【００２８】
図８に示す結合状態に於いては、両頭針Ａの一方針部１が溶解液入り容器ａの密閉口部ａ1を刺入貫通し、又他方針部２が薬剤入り容器ｂの密閉口部ｂ1を刺入貫通し、もって両容器ａ、ｂ内は両頭針Ａを介し連通される。また、薬剤入り容器ｂの密閉口部ｂ1の後端の凹段部ｂ2に差込口４に設けた係止突部６が係止することに加え該密閉口部ｂ1の周側部には、図３に示すように、保有弾性に抗し強制的に伏倒されたリブ片７が強く圧接しこの部分に摩擦係合力が生じ、これら係止力及び摩擦係合力により他方針部２側の針抜け抵抗が高められる。
【００２９】
図８に示す状態で常法に従い所定の薬剤溶解操作と薬剤溶解液の溶解液入り容器側への移動操作が行われ、その後に、両容器ａ、ｂの結合が解かれる。
【００３０】
この際、薬剤入り容器ｂ側に於いては、係止突部６の係止力と、リブ片７の圧接ひいては摩擦係合力とにより針抜け抵抗が高められているので、図９に示すように、針抜けは溶解液入り容器側で起こり、針抜け順序が規制される。
【００３１】
本発明に於いて、リブ片７を図１、２に示すように筒状差込口４の下部４ｂ即ち３６０°連続している部分に形成するようにすれば、この部分は押圧力を受けても撓み変形することがないので、リブ片７の摩擦係合力を最大限に活用できる。
【００３２】
本発明においては、両頭針の振れ止め部９とサポートリング１０とは、図７に示すように、直接接するような構成になっていてもよし、或いは図１０〜１２に示すように、振れ止め部９の外周面に形成した縦方向延出リブ１４、又は、図１３に示すように、サポートリング１０の内周面に形成した縦方向延出リブ１５を介し接するような構成になっていてもよい。
【００３３】
【発明の効果】
本発明によれば、針抜け順序の規制を係止突部による係止力とリブ片圧接による摩擦係合力との働きで行うような構成にしたので、係止力単独に見られる不安定さを解消でき、針抜け順序の規制強化が可能になる。
【図面の簡単な説明】
【図１】 本発明の一実施形態を示す縦断面図である。
【図２】 図１の平面図である。
【図３】 リブ片の形成状況を示す部分拡大図である。
【図４】 リブ片の伏倒状況を示す部分拡大図である。
【図５】 本発明の他の実施形態を示す縦断面図である。
【図６】 図５の平面図である
【図７】 図１〜２に示す本発明両頭針を予め溶解液入り容器に備え付けた状況を示す縦断面図である。
【図８】 同、両頭針を介し２つの容器を内部連通状態に結合した状況を示す縦断面図である。
【図９】 ２つの容器の連結を解いた状態を示す縦断面図である。
【図１０】 両頭針の変更例を示す縦断面図である。
【図１１】 図１０の平面図である。
【図１２】 図１０に示す両頭針をサポートリングに組み合わせた状況を示す縦断面図である。
【図１３】 サポートリングの変更例を示す縦断面図である。
【図１４】 従来の両頭針を適用して２つの容器を結合した状況を示す縦断面図である。
【図１５】同、２つの容器の結合を解いた状況を示す縦断面図である。
【符号の説明】
１ 一方針部
２ 他方針部
３ 針ホルダー
４ 筒状差込口
５ スリット
６ 係止突部
７ リブ片
８ 隙間
９ 振れ止め部
１０ サポートリング
１１ ねじ結合部
１２ 保護キャップ
１３ 凹凸嵌合部
１４ 縦方向延出リブ
１５ 縦方向延出リブ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a double-ended needle for coupling a solution-containing container and a drug-containing container in an internal communication state, and performing drug dissolution in the latter container and movement of the drug solution into the former container.
[0002]
[Prior art]
FIG. 14 shows a state of use of a conventional double-ended needle A ′. The double-ended needle A ′ combines a solution-containing container “a” and a container “b” containing drugs such as vitamins and antibiotics in an internal communication state. After the predetermined drug dissolution operation in the drug-containing container b and the movement operation of the drug solution to the solution-containing container a side are performed under this combined state, Both containers are uncoupled.
[0003]
Since the conventional double-ended needle A ′ is not provided with any means for regulating the needle removal order, the double-ended needle A ′ is disposed on the side of the solution containing container a when the two containers are uncoupled. 15 and the medicine container b side, and when the former container a side remains as shown in FIG. 15, the inside of the container a communicates with the outside air through the double-headed needle A ′ and the inside of the container is contaminated. There was a fear.
[0004]
[Problems to be solved by the invention]
The applicant previously provided a locking projection on the double-ended needle, and locked the locking projection on the concave step at the rear end of the mouth of the drug-containing container. Proposal of the needle removal order regulation (see, for example, Japanese Utility Model Laid-Open No. 7-12141) in which the needles of the double-ended needles are always raised on the side of the container containing the dissolution liquid. , For the time being.
[0005]
However, the double-ended needle is integrally molded from plastic, and the locking portion at the lower end of the locking projection must have an angle due to the necessity of punching. There was a lack of force, the regulation of the needle removal order became unstable, and further improvements were desired.
[0006]
The present invention has been made in view of such a demand.
[0007]
[Means for Solving the Problems]
The present invention includes a policy portion that can be inserted into a sealed mouth portion of a container containing a solution, another policy portion that is connected to the policy portion and can be inserted into a sealed mouth portion of a container containing a drug, and another policy portion. And a substantially cylindrical insertion port into which the sealing port of the drug-containing container can be inserted, and the insertion port has a drug-containing container sealed in the insertion port. In a state where the mouth portion is inserted and the other policy portion is inserted and penetrated into the sealed mouth portion, a locking projection that locks against the retained elasticity to the concave step portion at the rear end of the sealed mouth portion, and A rib piece forcibly lying down against the retained elasticity toward the inner peripheral surface of the insertion port by the peripheral side portion of the sealing port portion , and the rib piece is the insertion direction of the sealing port portion of the drug-containing container And is inclined toward the circumferential direction of the inner peripheral surface of the insertion port, and the thickness of the rib piece is smaller than the maximum protruding height of the locking protrusion. The present invention relates to a plastic double-ended needle characterized by being set to become.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
[0009]
One embodiment of the double-ended needle of the present invention is shown in FIGS. 1 and 2, and the double-ended needle A is integrally formed as a whole from plastic, for example, polyethylene, polypropylene, etc. by applying, for example, injection molding means.
[0010]
The double-ended needle A is connected to the one policy part 1 that can be inserted into the sealing port a 1 of the solution-containing container a, and is inserted into the sealing port b 1 of the drug-containing container b. Other needle portions 2 are provided, and these needle portions 1 and 2 are held in a penetrating state at the center of a needle holder 3 having a disk shape or a similar shape, for example, a regular polygon shape.
[0011]
Of the constituent elements of the double-ended needle A, the portions except the needle portions 1 and 2 are all made of plastic, and the needle portions 1 and 2 may be made of plastic or metal. In the latter case, an insert molding means can be applied to simultaneously and integrally mold with other plastic components.
[0012]
The needle holder 3 is integrally provided with a substantially cylindrical insertion port 4 concentric with the needle part 2 on the surface on the other policy part 2 side.
[0013]
Tubular outlet 4 is for guiding the insertion of the sealing opening b 1 of the medicated vessel b, it has an outer diameter and approximately equal to or than this inner diameter slightly larger of the mouth portion b 1 , the upper part 4a is divided by a plurality for example, four slits 5 of equally spaced four arcuate portion 4a 1, the lower part 4b are continuous over the entire range of 360 °.
[0014]
The arcuate portion 4a 1 of the cylindrical insertion port 4 is formed with an inwardly projecting locking projection 6 at a portion near the upper end.
[0015]
As shown in FIG. 1, the locking projection 6 is formed in a planar shape that connects two points on the arc with a string 6 a (see FIG. 2) in a central region excluding both ends of the arc-shaped portion 4 a 1 . The middle point of the string 6a has the largest projecting height, and the projecting height is gradually reduced as it reaches both ends.
[0016]
Since the locking projection 6 becomes an undercut portion when the inner mold is pulled out, the mold becomes easier to pull out as the plane area is smaller. The above planar shape takes this point into consideration. Further, the slits 5 as mentioned upper 4a of the tubular outlet 4 above if divided into arcuate portion 4a 1, the circular arc portion 4a 1 has to be capable of resiliently deformed outward Therefore, this is also one of countermeasures against die cutting.
[0017]
In order to make it easier to remove the mold, the lower end locking portion 6b of the locking projection 6 is inclined as shown in FIG.
[0018]
Further, the upper 6c, for guiding the insertion of the sealing gate portion b 1 of the medicated vessel b, can be given a slope.
[0019]
The inner peripheral surface of the cylindrical spigot 4, when fitted insertion of sealing gate portion b 1 of the medicated vessel b to the difference plug mouth 4, carried by the peripheral side the mouth portion b 1 elastic The rib piece 7 which is pressed and deformed in the tangential direction and is in a prone state as shown in FIG. 4 is formed. The rib pieces 7 are inclined in advance in the tangential direction (circumferential direction) as shown in FIG. 3 in order to smoothly push down and deform in the tangential direction. FIG. 3 shows a case in which the diameter line L is inclined approximately 60 ° with reference to the diameter line L, but the inclination angle may be appropriately selected and determined from a range of about 10 to 80 °, preferably about 45 to 70 °.
[0020]
As shown in FIG. 4, the rib piece 7 is sandwiched between the inner peripheral surface of the insertion port 4 and the outer peripheral surface of the sealing port b 1 in the state of being pressed and deformed and lying down. Therefore, the effective protrusion height of the locking protrusion 6 is reduced by that amount. Therefore, the thickness of the rib piece 7 needs to be smaller than the maximum protrusion height of the locking protrusion 6, and is usually 1/2 or less, preferably about 1/5 to 1/3 of the maximum protrusion height. Is set within the range.
[0021]
In the present embodiment, the rib pieces 7 are formed at four positions, for example, at 90 ° intervals in the lower portion 4b of the insertion port 4, that is, at a portion that continues 360 °. In this case, it is preferable to match the position of the slit 5 as shown in the drawing because the inner mold can be easily removed.
[0022]
On the periphery of the needle holder 3 of the double-headed needle A, an anti-sway portion 9 is formed in order to stabilize in a state where it is fitted and installed in the support ring described below. Although the cylindrical shape is shown as the steady rest 9 in the drawing, it may be shaped like a plane arc.
[0023]
Another embodiment of the present invention is shown in FIGS. According to the present embodiment, the locking projection 61 is formed so as to have substantially the same height over the entire extension angle range, and the rib piece 71 is formed below the locking projection 61. Except for this point, there is no substantial difference from the embodiment of FIGS. The upper end of the rib piece 71 extends to the vicinity of the locking projection 71.
[0024]
One use situation of the double-ended needle A of the embodiment of the present invention shown in FIGS. 1-2 is shown in FIGS.
The double-ended needle A is provided in advance on the side of the solution-containing container a as shown in FIG. 7 in order to facilitate the coupling operation between the solution-containing container a and the drug-containing container b.
[0025]
For built-in double-ended needle A, the solution container containing a a sealed opening a 1 is, the mouth portion a 1 than concentrically plastic support ring 10 is, for example, sealed opening a 1 protruding upward It is attached and fixed so that it can be removed as appropriate at the position of the screw coupling portion 11 provided on the outer periphery of the lower end.
[0026]
The double-ended needle A is installed in the support ring 10 so that it can slide between the upper movement limit position shown in FIG. 7 and the lower movement limit position shown in FIG. It has become. A protective cap 12 is attached to the upper end of the support ring 10 so that the double-ended needle A is accommodated therein so that it can be removed as appropriate. In FIG. 7, reference numeral 13 denotes an uneven fitting portion for temporarily fixing the double-ended needle A at a predetermined position.
[0027]
FIG. 8 shows a state where the solution-containing container “a” and the medicine-containing container “b” are coupled to each other via the double-ended needle A in an internal communication state. In this combined state, the protective cap 12 is removed from the state shown in FIG. 7, and then the sealing port b 1 of the medicine-containing container b turned downward and the insertion port 4 of the double-ended needle A are aligned, The container b is obtained by pressing the sealing port b 1 of the container b into the insertion port 4 and moving the double-ended needle A to the lower limit position as it is pressed.
[0028]
In the combined state shown in FIG. 8, one policy part 1 of the double-ended needle A penetrates the sealing port a 1 of the solution-containing container a, and the other policy part 2 is the sealing port of the drug-containing container b. The part b 1 is inserted and penetrated, so that the containers a and b are communicated with each other through a double-ended needle A. Further, the circumferential side of said seal closed portion b 1 In addition to the locking projection 6 provided on the outlet 4 to the recessed step b 2 of the rear end of the sealing opening b 1 of the medicated vessel b is engaged As shown in FIG. 3, the rib piece 7 which is forcibly overturned against the retained elasticity is strongly pressed against the portion, and a frictional engagement force is generated in this portion. The needle drop resistance on the part 2 side is increased.
[0029]
In a state shown in FIG. 8, a predetermined drug dissolving operation and a moving operation of the drug dissolving solution to the solution containing container side are performed according to a conventional method, and then the coupling between the containers a and b is released.
[0030]
At this time, in the medicine-containing container b side, the needle pull-out resistance is enhanced by the locking force of the locking protrusion 6 and the pressure contact of the rib piece 7 and thus the frictional engagement force, as shown in FIG. Furthermore, needle removal occurs on the side of the solution-containing container, and the needle removal order is regulated.
[0031]
In the present invention, if the rib piece 7 is formed in the lower part 4b of the cylindrical insertion port 4, as shown in FIGS. However, since it does not bend and deform, the frictional engagement force of the rib piece 7 can be utilized to the maximum.
[0032]
In the present invention, the steadying portion 9 and the support ring 10 of the double-ended needle may be configured so as to be in direct contact as shown in FIG. 7, or as shown in FIGS. The longitudinally extending ribs 14 formed on the outer peripheral surface of the portion 9 or the longitudinally extending ribs 15 formed on the inner peripheral surface of the support ring 10 as shown in FIG. Also good.
[0033]
【The invention's effect】
According to the present invention, the regulation of the needle removal order is performed by the action of the locking force by the locking protrusion and the frictional engagement force by the rib piece press contact, so that the instability seen in the locking force alone is achieved. This makes it possible to reinforce regulation of the needle removal order.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention.
FIG. 2 is a plan view of FIG.
FIG. 3 is a partially enlarged view showing a formation state of rib pieces.
FIG. 4 is a partially enlarged view showing a rib piece lying down.
FIG. 5 is a longitudinal sectional view showing another embodiment of the present invention.
6 is a plan view of FIG. 5. FIG. 7 is a longitudinal sectional view showing a state in which the double-ended needle of the present invention shown in FIGS.
FIG. 8 is a longitudinal sectional view showing a state in which two containers are coupled in an internal communication state via a double-ended needle.
FIG. 9 is a longitudinal sectional view showing a state where two containers are uncoupled.
FIG. 10 is a longitudinal sectional view showing a modified example of a double-ended needle.
FIG. 11 is a plan view of FIG. 10;
12 is a longitudinal sectional view showing a situation in which the double-ended needle shown in FIG. 10 is combined with a support ring.
FIG. 13 is a longitudinal sectional view showing a modified example of the support ring.
FIG. 14 is a longitudinal sectional view showing a state in which two containers are combined by applying a conventional double-ended needle.
FIG. 15 is a longitudinal sectional view showing a situation where the coupling of the two containers is released.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 One needle part 2 Other policy part 3 Needle holder 4 Cylindrical insertion slot 5 Slit 6 Locking projection part 7 Rib piece 8 Gap 9 Stabilizing part 10 Support ring 11 Screw coupling part 12 Protective cap 13 Concave / concave fitting part 14 Vertical Directional extension rib 15 Longitudinal extension rib

Claims (14)

溶解液入り容器の密閉口部に刺入可能な一方針部と、一方針部に接続していて薬剤入り容器の密閉口部に刺入可能な他方針部と、他方針部と同心状に一体に形成されていて上記薬剤入り容器の密閉口部を挿入できる実質的に筒状の差込口とを備え、差込口には、該差込口内に薬剤入り容器の密閉口部を挿入し他方針部を該密閉口部に刺入貫通した状態に於いて、該密閉口部の後端の凹段部に保有弾性に抗し係止する係止突部と、該密閉口部の周側部により差込口の内周面に向けて保有弾性に抗し強制的に伏倒されるリブ片とが備えられ、
リブ片は、薬剤入り容器の密封口部の挿入方向において係止突部よりも後方に設けられ、かつ、差込口の内周面の円周方向に向けて傾斜し、リブ片の肉厚は、係止突部の最大突出高さよりも小さくなるように設定されていることを特徴とするプラスチック製両頭針。One policy part that can be inserted into the sealed mouth of the container containing the solution, another policy part that can be inserted into the sealed mouth of the container containing the drug and concentrically with the other policy part A substantially cylindrical insertion port that is integrally formed and into which the sealed opening of the container containing the drug can be inserted, and the closed opening of the container containing the drug is inserted into the insertion port. In the state where the other policy portion is inserted and penetrated into the sealing mouth portion, a locking projection that is locked against the retained elasticity to the concave step portion at the rear end of the sealing mouth portion, and the sealing mouth portion A rib piece that is forced to fall against the retained elasticity toward the inner peripheral surface of the insertion port by the peripheral side part ,
The rib piece is provided behind the locking projection in the insertion direction of the sealing port portion of the medicine-containing container, and is inclined toward the circumferential direction of the inner peripheral surface of the insertion port. Is a plastic double-ended needle that is set to be smaller than the maximum protruding height of the locking protrusion . 溶解液入り容器の密閉口部に刺入可能な一方針部と、一方針部に接続していて薬剤入り容器の密閉口部に刺入可能な他方針部と、他方針部と同心状に一体に形成されていて上記薬剤入り容器の密閉口部を挿入できる実質的に筒状の差込口とを備え、差込口には、該差込口内に薬剤入り容器の密閉口部を挿入し他方針部を該密閉口部に刺入貫通した状態に於いて、該密閉口部の後端の凹段部に保有弾性に抗し係止する係止突部と、該密閉口部の周側部により差込口の内周面に向けて保有弾性に抗し強制的に伏倒されるリブ片とが備えられ、上記差込口の上部がスリットにより複数の平面円弧状部に分割され、下部は３６０°の全範囲に亘って連続し、平面円弧状部に係止突部が、又少なくとも下部の３６０°連続部分にリブ片が、それぞれ形成されていることを特徴とする両頭針。 One policy part that can be inserted into the sealed mouth of the container containing the solution, another policy part that can be inserted into the sealed mouth of the container containing the drug and concentrically with the other policy part A substantially cylindrical insertion port that is integrally formed and into which the sealed opening of the container containing the drug can be inserted, and the closed opening of the container containing the drug is inserted into the insertion port. In the state where the other policy portion is inserted and penetrated into the sealing mouth portion, a locking projection that is locked against the retained elasticity to the concave step portion at the rear end of the sealing mouth portion, and the sealing mouth portion A rib piece that is forced down against the holding elasticity toward the inner peripheral surface of the insertion port is provided by the peripheral side portion, and the upper portion of the insertion port is divided into a plurality of planar arcuate portions by slits. The lower part is continuous over the entire 360 ° range, and the locking projection is formed on the planar arcuate part, and the rib piece is formed on at least the lower 360 ° continuous part. A double-ended needle characterized by 係止突部が平面円弧状部の弧に沿って所定角度範囲に亘り延出するように形成されていることを特徴とする請求項２記載の両頭針。 3. The double-ended needle according to claim 2, wherein the locking projection is formed so as to extend over a predetermined angular range along the arc of the planar arc-shaped portion. 係止突部の突出高さは延出角度範囲の中間点が最も大きく、両端に至るに従い漸進的に減少していることを特徴とする請求項３記載の両頭針。 4. The double-ended needle according to claim 3, wherein the protrusion height of the locking protrusion is the largest at the midpoint of the extension angle range and gradually decreases as it reaches both ends. 係止突部の突出高さが、延出角度範囲の全体に亘って略々同一であることを特徴とする請求項３記載の両頭針。 4. The double-ended needle according to claim 3, wherein the protrusion height of the locking protrusion is substantially the same over the entire extension angle range. 係止突部の下端係止部に、型抜きのための傾斜が付されていることを特徴とする請求項１〜５のいずれかに記載の両頭針。 The double-ended needle according to any one of claims 1 to 5, wherein the lower end locking portion of the locking projection is provided with an inclination for punching. リブ片がスリットの位置と一致するように差込口の下部の３６０°連続する部分に形成されていることを特徴とする請求項２記載の両頭針。 3. The double-ended needle according to claim 2, wherein the rib piece is formed at a 360.degree. Continuous portion at the lower part of the insertion port so as to coincide with the position of the slit. リブ片がスリットと不一致の位置に形成され、該リブ片は差込口下部の３６０°連続する部分を超えて係止突部の近くまで延出していることを特徴とする請求項２記載の両頭針。 3. The rib piece according to claim 2, wherein the rib piece is formed at a position that does not coincide with the slit, and the rib piece extends to a position close to a locking projection beyond a 360 ° continuous portion at the bottom of the insertion port. Double-headed needle. リブ片が平面形状に於いて、接線方向に傾斜して設けられていることを特徴とする請求項１、２、７又は８に記載の両頭針。 The double-ended needle according to claim 1, 2, 7, or 8, wherein the rib pieces are provided in a plane shape and inclined in a tangential direction. リブ片の厚みが、係止突部の最大突出高さよりも小さいことを特徴とする請求項１、２、７、８又は９に記載の両頭針。 The double-headed needle according to claim 1, 2, 7, 8, or 9, wherein the thickness of the rib piece is smaller than the maximum protruding height of the locking protrusion. 溶解液入り容器の上端の密閉口部に、該口部から上方へ同心状に突出するようにサポートリングが取り外し可能に接続固定され、該サポートリング内に請求項１〜１０のいずれかに記載の両頭針が、上記密閉口部への刺入前の上動限界位置と密閉口部に刺入貫通可能な下動限界位置との間を摺動移動可能に嵌装されていることを特徴とする両頭針付き溶解液入り容器。 The support ring is detachably connected and fixed to the sealed mouth portion at the upper end of the container containing the dissolved solution so as to protrude concentrically upward from the mouth portion, and the support ring is provided in any one of claims 1 to 10. The double-ended needle is fitted so as to be slidable between an upper movement limit position before insertion into the sealing mouth portion and a lower movement limit position where insertion can be inserted into the sealing mouth portion. A container with a solution with a double-ended needle. 両頭針が、サポートリング内での振れを防止するための振れ止め部を備えていることを特徴とする請求項１１記載の溶解液入り容器。 12. The solution-containing container according to claim 11, wherein the double-ended needle is provided with an anti-sway portion for preventing shake within the support ring. 両頭針の振れ止め部とサポートリングとが、上記振れ止め部の外周面に形成の縦方向延出リブを介し接する構成になっていることを特徴とする請求項１２記載の溶解液入り容器。The container containing a dissolution liquid according to claim 12, wherein the steady-state portion and the support ring of the double-ended needle are in contact with the outer peripheral surface of the steady-state portion via a longitudinally extending rib. 両頭針の振れ止め部とサポートリングとが、該サポートリングの内周面に形成の縦方向延出リブを介し接する構成になっていることを特徴とする請求項１２記載の溶解液入り容器。The container with a dissolution liquid according to claim 12, wherein the steady-state portion of the double-ended needle and the support ring are in contact with an inner peripheral surface of the support ring via a longitudinally extending rib.
JP09055397A 1996-04-17 1997-04-09 Plastic double-ended needle Expired - Lifetime JP3743875B2 (en)

Priority Applications (1)

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JP8-95260 1996-04-17
JP9526096 1996-04-17
JP09055397A JP3743875B2 (en) 1996-04-17 1997-04-09 Plastic double-ended needle

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US6022339A (en) * 1998-09-15 2000-02-08 Baxter International Inc. Sliding reconstitution device for a diluent container
JP5390276B2 (en) * 2009-06-23 2014-01-15 テルモ株式会社 Medical tool set

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US4759756A (en) * 1984-09-14 1988-07-26 Baxter Travenol Laboratories, Inc. Reconstitution device
US4675020A (en) * 1985-10-09 1987-06-23 Kendall Mcgaw Laboratories, Inc. Connector
US5304163A (en) * 1990-01-29 1994-04-19 Baxter International Inc. Integral reconstitution device
JP2605345Y2 (en) * 1992-05-01 2000-07-10 株式会社大塚製薬工場 Drug container
JPH05317383A (en) * 1992-05-19 1993-12-03 Nissho Corp Solution container equipped with means for communicating with chemical container
JP2581226Y2 (en) * 1993-08-02 1998-09-21 株式会社大塚製薬工場 Double-ended needle
JP3016573U (en) * 1994-12-08 1995-10-03 株式会社大塚製薬工場 Double-ended needle
JP3415714B2 (en) * 1996-02-01 2003-06-09 テルモ株式会社 Chemical transfer device and chemical transfer system
JP3947984B2 (en) * 1997-04-09 2007-07-25 株式会社大塚製薬工場 Plastic double-ended needle

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