JP3643150B2 - Interior material for shielding containers for storing radioactive chemical containers - Google Patents

Interior material for shielding containers for storing radioactive chemical containers Download PDF

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JP3643150B2
JP3643150B2 JP23915795A JP23915795A JP3643150B2 JP 3643150 B2 JP3643150 B2 JP 3643150B2 JP 23915795 A JP23915795 A JP 23915795A JP 23915795 A JP23915795 A JP 23915795A JP 3643150 B2 JP3643150 B2 JP 3643150B2
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container
chemical solution
radioactive
solution container
shielding
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JPH0961588A (en
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修 櫻井
幸子 森
雅人 大屋
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Nihon Medi Physics Co Ltd
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Nihon Medi Physics Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、数mlから数10mlの放射性薬液の入った放射性薬液容器を安全に収納し、運搬、保管するための遮蔽容器の内装材、および、該内装材を備えた遮蔽容器、さらには、該遮蔽容器に放射性薬液の入った放射性薬液容器を収納した放射性薬液収納遮蔽容器に関する。
【0002】
【従来の技術】
数mlから数10mlの放射性薬液を封入したバイアル、プレフィルドシリンジ、アンプル等の放射性薬液容器を収納し、運搬、保管するための遮蔽容器は、従来、放射線の遮蔽および放射性薬液容器の破損時の安全性を考慮して設計されるものがほとんどであった。
【0003】
例えば、放射性薬液容器の胴部の周囲を、薬液吸収能を有する吸収紙で包囲し、放射性薬液容器と遮蔽容器との隙間を埋めることにより放射性薬液容器の固定を行うものが一般的に知られている。
しかし、放射性薬液容器や遮蔽容器は、その成形時に寸法誤差が生じることがあるため、該吸収紙のみでは、遮蔽容器内への放射性薬液容器の固定が不十分なものとなったり、放射性薬液容器の破損防止のための緩衝作用も不十分なものとなっている場合がある。
【0004】
上記のものにおいて、緩衝作用を確保するためには放射性薬液容器と遮蔽容器との隙間を空けないように吸収紙で埋める必要があるが、そのように、遮蔽容器の中に放射性薬液容器と吸収紙を挿入するといった細かい作業を機械で行うことは困難である。
【0005】
また、使用に際して放射性薬液容器から薬液を注射器等で抜き取るときは、放射性薬液容器を傾斜させたり転倒させたりすると抜き取り易くなるが、その際は、放射性薬液容器と遮蔽容器との固定が不十分であるために、遮蔽容器に収納したまま放射性薬液容器を安全に傾斜させることは難しく、まして、転倒させることはできない。放射性薬液容器を遮蔽容器から取り出して作業をすれば、薬液容器を傾斜させたり転倒させたりすることが可能であるが、その場合は、放射線被曝による危険性が増すため不適切である。
【0006】
近年、図8ないし図11に示すようなゴム製の内装材(19)を有する遮蔽容器が開発されている。
これは、バイアル型の放射性薬液容器(21)をその首部において固定するもので、放射性薬液容器と遮蔽容器とを一緒に傾斜させたり転倒させることができ、しかも、放射性薬液容器を遮蔽容器から少し引き出すことができ、放射性薬液容器からの薬液の抜き取りを容易にすることができる。
【0007】
しかし、上記内装材は、放射性薬液容器の首部のみと接しているため、薬液容器胴部の下方部における固定は不十分であり、薬液容器胴部と遮蔽容器との間は外部からの衝撃により動揺し、放射性薬液容器が破損する危険性を有している。もちろん、薬液容器胴部と遮蔽容器との間には吸収紙(22)を配置するが、それだけでは緩衝作用はやはり不十分で、放射性薬液容器が破損しやすいという点は解消されていない。
また、放射性薬液容器を遮蔽容器から少し引き出すとき、図11のごとく、長さ(M)以上(薬液容器肩部によって上方に持ち上げられた内装材の内面(19a) が薬液容器胴部に接触する位置以上)引き出さないと保持されない。
【0008】
【発明が解決しようとする課題】
本発明は、▲1▼放射性薬液容器を遮蔽容器内に確実に固定するとともに外部からの衝撃を緩衝することにより、放射性薬液容器の破損を防止すること、▲2▼放射性薬液容器を遮蔽容器と一緒に傾斜させたり転倒させたり、放射性薬液容器を遮蔽容器から少し引き出したりすることができるようにして、放射性薬液容器から注射器等への薬液の抜き取りを容易にすること、ならびに、▲3▼放射性薬液の入った放射性薬液容器を遮蔽容器に収納する作業を容易にして収納作業を機械化可能とすること、を目的とする。
【0009】
【課題を解決するための手段】
上記課題を解決するため、検討を重ねた結果、以下のような構成を有する内装材を遮蔽容器に備えることにより、上記課題を解決することができることを見いだし、本発明を完成した。
【0010】
すなわち、円筒状の胴部を有する放射性薬液の入った放射性薬液容器を収納する遮蔽容器の内装材であって、容器本体の開口部に係合する遮蔽容器係合部と、該遮蔽容器係合部に隣接し、放射性薬液容器の胴径とほぼ等しいが該胴径より大きい内径を有する薬液容器挿入部と、該薬液容器挿入部から下方に向かって略円錐台状に形成され、その下端縁より複数個の拡開用切込みにより設けられた薬液容器固定片よりなる薬液容器固定部を有し、該薬液容器固定部の長さ(L)は放射性薬液容器の胴長の1/2ないし1の長さであり、該薬液容器固定部は、放射性薬液容器を挿入したときに、放射性薬液容器の胴径と同じ内径にまで拡開することを特徴とする内装材である。該内装材は、薬液容器固定部が、3ないし12個の薬液容器固定片を有することが好ましく、特に好ましくは、6ないし8個である。また、薬液容器固定部の外周に伸縮性リングを着けたり、薬液容器固定部の内表面に滑り止め加工を施してもよい。該内装材を備えた遮蔽容器、および、該遮蔽容器に放射性薬液の入った放射性薬液容器を収納した放射性薬液収納遮蔽容器は、上記課題を解決するものとして好適に使用される。
【0011】
【発明の実施の形態】
本発明において、放射性薬液容器は、数mlから数10mlの放射性薬液を封入した容器で、円筒状の胴部を有するガラス製、合成樹脂製等の容器(例えば、バイアル、プレフィルドシリンジ、アンプル等)を示す。
【0012】
遮蔽容器は、容器本体および蓋からなり、容器本体は、放射性薬液容器の収納部を有する有底のもので、その内径は、収納する放射性薬液容器の胴径よりやや大きいものである。該容器本体は、放射線遮蔽部材製の容器体にプラスチック製の外装容器を施したものである。また、蓋は、放射線遮蔽部材製の蓋体にプラスチック製の外装容器を施したものである。放射線遮蔽部材としては、鉛、タングステン、鉛とタングステンを組み合わせたもの等、放射線遮蔽部材を1種或いは複数組み合わせて使用することが可能である。
【0013】
内装材は、遮蔽容器係合部、薬液容器挿入部、および薬液容器固定部によって構成される。
遮蔽容器係合部は、内装材自身を遮蔽容器に固定するための部分で、該遮蔽容器の容器本体の開口部にしっかり固定するように部分的あるいは全体的に係合させる。固定の方法は、外装容器に溝を作ってそこに内装材を嵌合させたり、凹凸の嵌合部を外装容器や容器本体と遮蔽容器係合部との間で設けたり、ネジ式にしたり、あるいは、容器本体の開口部に内装材を接着させる等、様々な方法が採用される。
薬液容器挿入部は、該遮蔽容器係合部に隣接し、放射性薬液容器の胴径とほぼ等しいが、胴径より大きい内径を有する。内径は、薬液容器の挿入が容易であればよく、通常は薬液容器よりやや大きい内径が選ばれる。
薬液容器固定部は、該薬液容器挿入部から下方に向かって略円錐台状に形成し、その下端縁より複数個の拡開用切込みにより設けられた薬液容器固定片よりなるものであり、その長さ(L)は、収納する放射性薬液容器の胴長の1/2ないし1の長さを有する。
また、これら内装材の各部分(遮蔽容器係合部、薬液容器挿入部、および薬液容器固定部)は、互いに独立したものではなく、境目がない1つの部材で製することが望ましい。
【0014】
放射性薬液容器を遮蔽容器に収納するとき、内装材の薬液容器固定部は、放射性薬液容器の胴径と同じ内径にまで拡開すると同時に、放射性薬液容器の胴部をその中心に向かって挟圧することによって放射性薬液容器を固定する。このため、薬液容器固定部は曲げ能力と曲げに対する復元力を有することが必要である。具体的には、プラスチックや薄い金属、特殊な加工を施した紙等が使用されるが、特に、ポリプロピレン、ポリエチレン、ポリ塩化ビニル、ナイロン等のプラスチックが好適である。
【0015】
ここで、薬液容器固定部に設ける拡開用切込みの数や大きさは、内装材の材質や形状、収納する放射性薬液容器の大きさ等に応じて、適宜決定されるが、拡開用切込みの数が少ない場合は、曲げ能力が小さく復元力が大きくなる。反対に、数を多くすると、曲げ能力は大きくなるが復元力は小さくなる。
また、拡開用切込みの幅が小さい場合は、曲げ能力が小さく復元力が大きくなる。反対に、幅を大きくすると、曲げ能力は大きくなるが復元力は小さくなる。これらを考慮にいれ、3ないし12個から選ばれる適当な数の拡開用切込みを設けることによりそれと同数の薬液容器固定片を形成することが好ましく、特に、6ないし8個の薬液容器固定片を形成することが好ましい。
【0016】
さらに、薬液容器固定部の曲げ能力と曲げに対する復元力を補強するために、ゴム等の伸縮性のある部材で製した伸縮性リングを薬液容器固定部の外周に着けてもよい。
また、放射性薬液容器の固定、保持をさらに確実なものにするために、薬液容器固定部の内表面に滑り止め加工を施してもよい。さらに、収納容器と内装材の間に、薬液吸収用の吸収材を配してもよい。
【0017】
内装材の薬液容器挿入部は、放射性薬液容器の胴径とほぼ等しいが胴径よりは少し大きい内径を有するため、放射性薬液容器が挿入しやすくなっている。該内装材を備えた遮蔽容器に放射性薬液容器を挿入(収納)するとき、薬液容器固定部に設けられた拡開用切込みによって薬液容器固定部が放射性薬液容器の胴径と同じ内径になるまで拡開すると同時に、薬液容器固定部がそれ自身の有する復元力によって元の狭い径に戻ろうとし、放射性薬液容器の胴部を中心に向かって挟圧するため、該胴部は挿入した底部側から順次、薬液容器固定部に保持され、確実に固定される。
また、放射性薬液容器を引き出すときも、薬液容器固定部によって任意の位置で放射性薬液容器を保持することができる。
しかも、放射性薬液容器を収納するとき、薬液容器固定部が放射性薬液容器を遮蔽容器の中心に向かって案内するため、放射性薬液容器や遮蔽容器の多少の寸法誤差に影響されることなく、円滑に放射性薬液容器を収納することができる。さらに、遮蔽容器と内装材の間に配置した吸収紙は、薬液容器固定部によって外側に押し拡げられるため、放射性薬液容器収納の妨げになることはない。よって、放射性薬液容器の収納作業を機械化することも可能となる。
【0018】
【実施例】
本発明について、一実施例をあげて図面を参照しながら、以下に説明する。
図1ないし図3には本発明の一態様である内装材(1) 、図4には該内装材(1) を備えた遮蔽容器(7) 、図5には該遮蔽容器(7) に放射性薬液の入った放射性薬液容器(16)を収納した放射性薬液収納遮蔽容器(15)を示す。
図4に示す遮蔽容器(7) は、容器本体(10)と蓋(13)より成り、容器本体の開口部に後述の内装材(1) を備えたものである。
【0019】
容器本体(10)は、放射性薬液容器の収納部(14)を有する有底の略円筒状の鉛製の容器体(8) にプラスチック製の外装容器(9) を施したものである。
また、蓋(13)は、鉛製の蓋体(11)にプラスチック製の外装容器(12)を施したものである。容器本体(10)と蓋(13)の嵌合部は、放射線遮蔽部材の内側と外側に段差(8a,11a)を設け、その噛み合わせによって、内装材を備えることによって生ずる隙間からの放射線の漏洩を防いでいる。また、容器本体の外装容器(9) には、内装材を嵌合するための環状の溝(9a)を設ける。
【0020】
内装材(1) は、遮蔽容器係合部(2) 、薬液容器挿入部(3) および薬液容器固定部(4) から構成される。
遮蔽容器係合部(2) は、遮蔽容器の容器本体の開口部に設けられた段差(8a)に係合した形状で、その周端を外装容器に設けられた溝(9a)に嵌合させることによって遮蔽容器本体の開口部に密着・固定している。
このとき、内装材の固定に接着剤等は使用していないため、廃棄の際は、遮蔽容器から内装材の薬液容器固定片を引っ張るだけで簡単に取り外すことができ、放射線遮蔽部材で製した容器体(8) と、プラスチックで製した外装容器(9) を簡単に分離することができる。なお、容器体(8) は再利用が可能である。
薬液容器挿入部(3) は、遮蔽容器係合部に隣接し、放射性薬液容器の胴径とほぼ等しいが、胴径よりは少し大きい内径を有する。
薬液容器固定部(4) は、薬液容器挿入部から下方に向かって略円錐台に延在し、その下端縁より6個の拡開用切込み(5) によって、6個の薬液容器固定片(6) を形成し、薬液容器固定部の長さ(L)は、収納する放射性薬液容器の胴長とほぼ同一の長さである。
【0021】
該内装材の各部分は互いに境目がなく、曲げ能力と曲げに対する復元力を有する一つの部材 (例えば、ポリプロピレン等のプラスチック) で製する。
図5において、放射性薬液容器(16)は、ガラス製の薬液容器型のものを示している。また、遮蔽容器内には、万一に備えて、放射性薬液容器に封入した薬液を吸収することができる吸収紙(17)を該放射性薬液容器との間に配置する。
図4に示す遮蔽容器(7) に、放射性薬液容器(16)を収納したとき、図5に示すように、内装材の薬液容器固定部は、放射性薬液容器の胴径と同じ内径になるまで拡開すると同時に、薬液容器固定部がそれ自身の有する復元力によって元の狭い径に戻ろうとし、放射性薬液容器の胴部を中心に向かって挟圧し、確実に固定する。また、放射性薬液容器を引き出すときには、任意の位置で放射性薬液容器を保持することができる。さらに、放射性薬液容器を完全に引き出した時、薬液容器固定部は再び元の状態に戻る。
【0022】
図6および図7は、本発明の内装材の別の態様で、8個の薬液容器固定片(6) を有する内装材に、薬液容器固定部の曲げ能力と曲げに対する復元力を補強するために、ゴム等の伸縮性のある部材で製した伸縮性リング(18)を薬液容器固定部の外周に着けたものである。
なお、これらの内装材には、放射性薬液容器の固定、保持をさらに確実なものにするために、薬液容器固定部の内表面に滑り止め加工を施してもよい。
【0023】
【実験例】
図5のとおり作成した、本発明の放射性薬液収納遮蔽容器について、具体的な数値とともに実験結果を示す。
5ml用の薬液容器 (胴径20mm: 胴長30mm) を収納するために、容器体および蓋体を鉛で製し、その内径を24mm、厚みを 9mmとし、開口部の段差の部分は xを 4mm、 yを 4mm、z を 3mmとした遮蔽容器を用意した。
内装材は、ポリプロピレン製とし、その厚みは0.8mm とした。また、薬液容器固定部は容器体の段差に係合させ、周端を外装容器に設けられた溝(9a)に嵌合させることができるようにした。さらに、薬液容器固定部の長さ(L)を22mmとし、幅0.5mm 、深さ18mmの拡開用切込みを6個設けた。
これに、上記の薬液容器を収納したとき、拡開用切込みによって薬液容器固定部が薬液容器の胴径と同じ内径にまで拡開した状態になり、その状態でゆすったり振動を与えたりしても、薬液容器が遮蔽容器に接触する等、薬液容器の把持が不安定になることはなく、薬液容器が確実に固定されていることが確認された。また、薬液容器を 5mm、10mm、15mm引き出したときにも、それぞれの位置で薬液容器は保持され、傾斜させたり転倒させたりしても薬液容器が飛び出すことはなかった。薬液容器を完全に引き出したときには、内装材は薬液容器挿入前の状態に戻った。
【0024】
【発明の効果】
本発明の内装材によれば、放射性薬液容器を遮蔽容器内に安全に収納し、運搬、保管することができる。すなわち、放射性薬液容器を遮蔽容器内に確実に固定するとともに衝撃に対する緩衝作用を有するため、放射性薬液容器の破損を防止することができ、製造者、運搬者および使用者の安全性を高めることができる。しかも、放射性薬液収納遮蔽容器を(放射性薬液の入った放射性薬液容器と遮蔽容器を一緒に)傾斜させたり転倒させたり、放射性薬液容器を遮蔽容器から少し引き出すこともできるため、放射性薬液容器からの薬液の抜き取りが容易になるため、使用者の使い勝手を良くするとともに安全性を高めることが可能となる。
また、放射性薬液容器の遮蔽容器への収納を機械化することができるため、作業効率を高めることも可能である。
【図面の簡単な説明】
【図1】 本発明の一態様である内装材の斜視図。
【図2】 図1の内装材を真横から見た図。
【図3】 図1の内装材を真上から見た図。
【図4】 図1の内装材を備えた遮蔽容器の横断面図。
【図5】 図4の遮蔽容器に、放射性薬液の入った放射性薬液容器を収納した放射性薬液収納遮蔽容器の横断面図。
【図6】 本発明の別の態様である、伸縮性リングを着けた内装材の斜視図。
【図7】 図6の内装材を真横から見た図。
【図8】 従来技術であるゴム製の内装材の斜視図。
【図9】 図8のゴム製の内装材を真上から中心線に沿って切断した時の斜視図。
【図10】 図8のゴム製の内装材を備えた放射性薬液収納遮蔽容器の横断面図。
【図11】 図10の遮蔽容器から放射性薬液容器を引き出した時の横断面図。
【符号の説明】
1:内装材
2:遮蔽容器係合部
3:薬液容器挿入部
4:薬液容器固定部
5:拡開用切込み
6:薬液容器固定片
7:内装材を備えた遮蔽容器
8:容器体
8a:段差
9:外装容器
9a:環状の溝
10:容器本体
11:蓋体
11a :段差
12:外装容器
13:蓋
14:放射性薬液容器の収納部
15:放射性薬液収納遮蔽容器
16:放射性薬液容器
17:吸収紙
18:伸縮性リング
19:ゴム製の内装材
19a :内装材の内面
20:放射線遮蔽部材
21:薬液容器
22:吸収紙
[0001]
BACKGROUND OF THE INVENTION
The present invention safely stores, transports and stores a radioactive chemical solution container containing several to several tens of ml of a radioactive chemical solution, and a shielding container including the interior material, and a shielding container including the interior material, The present invention relates to a radioactive chemical solution storage shielding container in which a radioactive chemical solution container containing a radioactive chemical solution is accommodated in the shielding container.
[0002]
[Prior art]
Shielding containers for storing, transporting, and storing radioactive chemical containers such as vials, prefilled syringes, ampoules, etc. that contain several to several tens of ml of radioactive chemical liquid have been used in the past. Most of them were designed in consideration of the characteristics.
[0003]
For example, it is generally known that a radioactive chemical solution container is fixed by surrounding the body portion of the radioactive chemical solution container with an absorbent paper having a chemical solution absorption capability and filling a gap between the radioactive chemical solution container and the shielding container. ing.
However, since the radioactive chemical solution container and the shielding container may cause a dimensional error at the time of molding, the absorbent paper alone may not be sufficient to fix the radioactive chemical solution container in the shielding container, or the radioactive chemical solution container In some cases, the buffering action for preventing breakage of the sheet is insufficient.
[0004]
In the above, in order to secure the buffering action, it is necessary to fill the gap between the radioactive liquid chemical container and the shielding container with absorbent paper, but as such, the radioactive chemical liquid container and the absorption container are absorbed in the shielding container. It is difficult to perform detailed operations such as inserting paper with a machine.
[0005]
In addition, when extracting the chemical solution from the radioactive chemical solution container with a syringe or the like in use, it is easy to extract it by tilting or overturning the radioactive chemical solution container, but in that case, the fixation between the radioactive chemical solution container and the shielding container is insufficient. For this reason, it is difficult to safely tilt the radioactive chemical solution container while it is housed in the shielding container, and it cannot be overturned. If the radioactive chemical container is taken out from the shielding container and operated, the chemical container can be tilted or overturned. However, in that case, the risk of radiation exposure increases, which is inappropriate.
[0006]
In recent years, a shielding container having a rubber interior material (19) as shown in FIGS. 8 to 11 has been developed.
This is to fix the vial-type radioactive chemical container (21) at its neck, and the radioactive chemical container and the shielding container can be tilted or overturned together, and the radioactive chemical container is slightly removed from the shielding container. It can be pulled out and the extraction of the chemical solution from the radioactive chemical solution container can be facilitated.
[0007]
However, since the interior material is in contact with only the neck of the radioactive liquid chemical container, the lower part of the chemical liquid container body is not sufficiently fixed, and the chemical liquid container body and the shielding container are affected by an external impact. There is a risk of shaking and damaging the radioactive chemical container. Of course, the absorbent paper (22) is arranged between the chemical container body and the shielding container, but the buffering action is not sufficient by itself, and the point that the radioactive chemical container is easily damaged has not been solved.
Further, when the radioactive chemical container is pulled out from the shielding container, as shown in FIG. 11, it is longer than length (M) (the inner surface (19a) of the interior material lifted upward by the shoulder of the chemical container contacts the barrel of the chemical container. It will not be held unless it is pulled out.
[0008]
[Problems to be solved by the invention]
According to the present invention, (1) the radioactive chemical solution container is securely fixed in the shielding container and the impact from the outside is buffered to prevent the radioactive chemical solution container from being damaged, and (2) the radioactive chemical solution container is used as the shielding container. To make it easy to withdraw the drug solution from the radioactive drug solution container to the syringe, etc., by tilting and overturning together, or by slightly pulling out the radioactive drug solution container from the shielding container, and (3) radioactive It is an object of the present invention to facilitate the work of storing a radioactive chemical solution container containing a chemical solution in a shielding container so that the storage operation can be mechanized.
[0009]
[Means for Solving the Problems]
As a result of repeated studies to solve the above problems, it was found that the above problems can be solved by providing the shielding container with an interior material having the following configuration, and the present invention has been completed.
[0010]
That is, it is an interior material of a shielding container that contains a radioactive chemical liquid container containing a radioactive chemical liquid having a cylindrical body, and includes a shielding container engaging portion that engages with an opening of the container body, and the shielding container engagement adjacent to the part, the body diameter of the radioactive solution container and approximately equal but drug solution container insertion portion having an inner diameter larger than the body diameter, is formed in a substantially truncated cone shape from the liquid chemical container insertion portion downward, its lower end edge A chemical solution container fixing portion comprising a plurality of chemical solution container fixing pieces provided by a plurality of expanding cuts, and the length (L) of the chemical solution container fixing portion is 1/2 to 1 of the trunk length of the radioactive chemical solution container length der of is, the drug solution container fixing portion, upon insertion of the radioactive solution container, a interior material characterized by expansion to Rukoto to the same inner diameter as the barrel diameter of the radioactive solution container. In the interior material, the chemical liquid container fixing part preferably has 3 to 12 chemical liquid container fixing pieces, particularly preferably 6 to 8. Further, an elastic ring may be attached to the outer periphery of the chemical solution container fixing portion, or an anti-slip process may be applied to the inner surface of the chemical solution container fixing portion. The shielding container provided with the interior material and the radioactive chemical solution storage shielding container in which the radioactive chemical solution container containing the radioactive chemical solution is accommodated in the shielding container are preferably used as a solution to the above problems.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, the radioactive drug container is a container filled with several to several tens of ml of a radioactive drug solution, and is made of a glass or synthetic resin container (eg, vial, prefilled syringe, ampoule, etc.) having a cylindrical body. Indicates.
[0012]
The shielding container includes a container main body and a lid, and the container main body has a bottom having a storage part for the radioactive chemical liquid container, and the inner diameter thereof is slightly larger than the trunk diameter of the radioactive chemical liquid container to be stored. The container body is obtained by applying a plastic outer container to a container body made of a radiation shielding member. The lid is obtained by applying a plastic outer container to a lid made of a radiation shielding member. As the radiation shielding member, it is possible to use one or a plurality of radiation shielding members, such as lead, tungsten, or a combination of lead and tungsten.
[0013]
The interior material includes a shielding container engaging part, a chemical liquid container insertion part, and a chemical liquid container fixing part.
The shielding container engaging portion is a portion for fixing the interior material itself to the shielding container, and is partially or totally engaged so as to be firmly fixed to the opening of the container body of the shielding container. The fixing method is to make a groove in the outer container and fit the interior material there, or to provide an uneven fitting part between the outer container or the container body and the shielding container engaging part, or to make it a screw type Alternatively, various methods such as bonding an interior material to the opening of the container body are adopted.
The chemical liquid container insertion portion is adjacent to the shielding container engaging portion and has an inner diameter larger than the trunk diameter, but is substantially equal to the trunk diameter of the radioactive chemical liquid container. The inner diameter is not limited as long as the chemical container can be easily inserted, and an inner diameter slightly larger than that of the chemical container is usually selected.
The medicinal solution container fixing portion is formed in a substantially truncated cone shape downward from the medicinal solution container insertion portion, and is composed of medicinal solution container fixing pieces provided by a plurality of expanding cuts from the lower end edge thereof, The length (L) has a length of ½ to 1 of the trunk length of the radioactive chemical container to be stored.
In addition, it is desirable that each part of the interior material (the shielding container engaging part, the chemical liquid container inserting part, and the chemical liquid container fixing part) is not independent of each other and is made of a single member having no boundary.
[0014]
When storing the radioactive liquid chemical container in the shielding container, the chemical liquid container fixing portion of the interior material expands to the same inner diameter as the trunk diameter of the radioactive chemical liquid container, and at the same time, sandwiches the body of the radioactive chemical liquid container toward the center. To fix the radioactive chemical container. For this reason, the chemical solution container fixing portion needs to have a bending ability and a restoring force against bending. Specifically, plastic, thin metal, specially processed paper, or the like is used, and plastics such as polypropylene, polyethylene, polyvinyl chloride, and nylon are particularly preferable.
[0015]
Here, the number and size of the incisions for expanding provided in the chemical solution container fixing portion are appropriately determined according to the material and shape of the interior material, the size of the radioactive chemical solution container to be stored, etc. When the number is small, the bending ability is small and the restoring force is large. On the contrary, when the number is increased, the bending ability is increased, but the restoring force is decreased.
Moreover, when the width | variety of the cutting for expansion is small, a bending ability is small and a restoring force becomes large. On the contrary, when the width is increased, the bending ability is increased, but the restoring force is decreased. Taking these into consideration, it is preferable to form the same number of chemical liquid container fixing pieces by providing an appropriate number of expansion notches selected from 3 to 12, particularly 6 to 8 chemical liquid container fixing pieces. Is preferably formed.
[0016]
Furthermore, in order to reinforce the bending capacity and the restoring force against bending of the chemical solution container fixing portion, an elastic ring made of a stretchable member such as rubber may be attached to the outer periphery of the chemical solution container fixing portion.
In order to further secure and hold the radioactive chemical solution container, the inner surface of the chemical solution container fixing portion may be subjected to anti-slip processing. Furthermore, you may arrange | position the absorption material for chemical | medical solution absorption between a storage container and interior material.
[0017]
The chemical liquid container insertion portion of the interior material has an inner diameter that is substantially equal to the trunk diameter of the radioactive chemical liquid container but slightly larger than the trunk diameter, so that the radioactive chemical liquid container can be easily inserted. When inserting (accommodating) the radioactive chemical container into the shielding container provided with the interior material, until the chemical liquid container fixing part has the same inner diameter as the trunk diameter of the radioactive chemical liquid container by the expanding cut provided in the chemical liquid container fixing part Simultaneously with the expansion, the chemical container fixing part tries to return to its original narrow diameter by its own restoring force, and the body part of the radioactive chemical container is clamped toward the center. Sequentially, it is held in the chemical solution container fixing part and securely fixed.
Also, when the radioactive chemical solution container is pulled out, the radioactive chemical solution container can be held at an arbitrary position by the chemical solution container fixing portion.
Moreover, when storing the radioactive liquid chemical container, the chemical liquid container fixing portion guides the radioactive chemical liquid container toward the center of the shielding container, so that it is smoothly affected without being affected by some dimensional errors of the radioactive chemical liquid container and the shielding container. A radioactive liquid container can be stored. Furthermore, since the absorbent paper disposed between the shielding container and the interior material is spread outward by the chemical liquid container fixing portion, it does not hinder the storage of the radioactive chemical liquid container. Therefore, it is possible to mechanize the storing operation of the radioactive chemical container.
[0018]
【Example】
The present invention will be described below with reference to the drawings with an example.
1 to 3 show an interior material (1) according to an embodiment of the present invention, FIG. 4 shows a shielding container (7) provided with the interior material (1), and FIG. 5 shows the shielding container (7). The radioactive chemical solution storage shielding container (15) containing the radioactive chemical solution container (16) containing the radioactive chemical solution is shown.
The shielding container (7) shown in FIG. 4 is composed of a container body (10) and a lid (13), and is provided with an interior material (1) to be described later at the opening of the container body.
[0019]
The container body (10) is obtained by applying a plastic outer container (9) to a bottomed substantially cylindrical lead container body (8) having a storage part (14) for a radioactive chemical solution container.
The lid (13) is obtained by applying a plastic outer container (12) to a lead lid (11). The fitting portion between the container body (10) and the lid (13) is provided with a step (8a, 11a) on the inside and outside of the radiation shielding member, and the engagement of the radiation from the gap generated by providing the interior material Prevents leakage. In addition, the outer container (9) of the container body is provided with an annular groove (9a) for fitting the inner material.
[0020]
The interior material (1) includes a shielding container engaging part (2), a chemical liquid container insertion part (3), and a chemical liquid container fixing part (4).
The shielding container engaging part (2) has a shape engaged with the step (8a) provided in the opening of the container body of the shielding container, and its peripheral end is fitted into the groove (9a) provided in the outer container. By doing so, it is closely attached and fixed to the opening of the shielding container main body.
At this time, since no adhesive or the like is used to fix the interior material, it can be easily removed simply by pulling the liquid chemical container fixing piece of the interior material from the shielding container, and made of a radiation shielding member. The container body (8) and the outer container (9) made of plastic can be easily separated. The container body (8) can be reused.
The chemical liquid container insertion portion (3) is adjacent to the shielding container engaging portion and has an inner diameter that is substantially equal to the trunk diameter of the radioactive chemical liquid container but slightly larger than the trunk diameter.
The medicinal solution container fixing portion (4) extends substantially downwardly from the medicinal solution container insertion portion into a truncated cone, and has six medicinal solution container fixing pieces ( 6) and the length (L) of the chemical solution container fixing portion is substantially the same as the trunk length of the radioactive chemical solution container to be stored.
[0021]
Each part of the interior material is made of one member (for example, plastic such as polypropylene) that has no boundary between each other and has a bending ability and a restoring force against bending.
In FIG. 5, the radioactive chemical solution container (16) is a glass chemical solution container type. Further, in case of an emergency, an absorbent paper (17) capable of absorbing the chemical liquid sealed in the radioactive chemical liquid container is disposed in the shielding container between the radioactive chemical liquid container.
When the radioactive chemical solution container (16) is accommodated in the shielding container (7) shown in FIG. 4, as shown in FIG. 5, the chemical solution container fixing portion of the interior material has the same inner diameter as the trunk diameter of the radioactive chemical solution container. Simultaneously with the expansion, the chemical solution container fixing portion tries to return to the original narrow diameter by its own restoring force, and the body portion of the radioactive chemical solution container is squeezed toward the center to be securely fixed. Moreover, when pulling out the radioactive chemical solution container, the radioactive chemical solution container can be held at an arbitrary position. Furthermore, when the radioactive chemical solution container is completely pulled out, the chemical solution container fixing portion returns to the original state again.
[0022]
6 and 7 show another embodiment of the interior material according to the present invention, in order to reinforce the bending capacity of the chemical liquid container fixing portion and the restoring force against bending in the internal material having eight chemical liquid container fixing pieces (6). In addition, a stretchable ring (18) made of a stretchable member such as rubber is attached to the outer periphery of the chemical solution container fixing portion.
These interior materials may be subjected to anti-slip processing on the inner surface of the chemical solution container fixing portion in order to further secure and hold the radioactive chemical solution container.
[0023]
[Experimental example]
About a radioactive chemical | medical solution storage shielding container of this invention created as FIG. 5, an experimental result is shown with a specific numerical value.
In order to store a 5 ml chemical container (bore diameter 20 mm: trunk length 30 mm), the container body and lid are made of lead, the inner diameter is 24 mm, the thickness is 9 mm, and the stepped portion of the opening is x. A shielded container with 4 mm, 4 mm y and 3 mm z was prepared.
The interior material was made of polypropylene and its thickness was 0.8 mm. Further, the chemical solution container fixing portion is engaged with the step of the container body so that the peripheral end can be fitted into the groove (9a) provided in the outer container. Furthermore, the length (L) of the chemical solution container fixing portion was 22 mm, and six widening cuts with a width of 0.5 mm and a depth of 18 mm were provided.
When the above chemical solution container is stored, the chemical solution container fixing part is expanded to the same inner diameter as the body diameter of the chemical solution container by the cutting for expansion, and the state is shaken or given vibration in that state. However, it was confirmed that the chemical solution container was securely fixed without the gripping of the chemical solution container being unstable, such as the chemical solution container coming into contact with the shielding container. Also, when the chemical container was pulled out 5 mm, 10 mm, and 15 mm, the chemical container was held at each position, and the chemical container did not pop out even if it was tilted or overturned. When the chemical container was completely pulled out, the interior material returned to the state before the chemical container was inserted.
[0024]
【The invention's effect】
According to the interior material of the present invention, the radioactive chemical container can be safely stored, transported and stored in the shielding container. That is, since the radioactive chemical solution container is securely fixed in the shielding container and has a shock absorbing function, the radioactive chemical solution container can be prevented from being damaged, and the safety of the manufacturer, transporter and user can be improved. it can. In addition, the radioactive chemical solution storage shielding container can be tilted or overturned (together with the radioactive chemical solution container containing the radioactive chemical solution and the shielding container), or the radioactive chemical solution container can be slightly pulled out of the shielding container. Since it becomes easy to remove the chemical solution, it is possible to improve the user-friendliness and enhance the safety.
Further, since the storage of the radioactive chemical solution container in the shielding container can be mechanized, the work efficiency can be improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of an interior material that is one embodiment of the present invention.
FIG. 2 is a view of the interior material of FIG. 1 viewed from the side.
FIG. 3 is a view of the interior material of FIG. 1 as viewed from directly above.
4 is a transverse cross-sectional view of a shielding container provided with the interior material of FIG. 1;
5 is a cross-sectional view of a radioactive chemical solution storage shielding container in which a radioactive chemical solution container containing a radioactive chemical solution is accommodated in the shielding container of FIG. 4;
FIG. 6 is a perspective view of an interior material with a stretchable ring according to another embodiment of the present invention.
7 is a view of the interior material of FIG. 6 as viewed from the side.
FIG. 8 is a perspective view of a conventional rubber interior material.
9 is a perspective view when the rubber interior material of FIG. 8 is cut along the center line from directly above.
10 is a cross-sectional view of a radioactive chemical solution storage shielding container provided with the rubber interior material of FIG.
11 is a cross-sectional view when the radioactive chemical solution container is pulled out from the shielding container of FIG.
[Explanation of symbols]
1: Interior material 2: Shielding container engaging part 3: Chemical liquid container insertion part 4: Chemical liquid container fixing part 5: Expansion cut 6: Chemical liquid container fixing piece 7: Shielding container 8 provided with internal material: Container body
8a: Step 9: Exterior container
9a: Annular groove
10: Container body
11: Lid
11a: Step
12: Exterior container
13: Lid
14: Radiopharmaceutical container storage
15: Radioactive chemical storage shielding container
16: Radioactive chemical container
17: Absorbent paper
18: Elastic ring
19: Rubber interior material
19a: inner surface of interior material
20: Radiation shielding member
21: Chemical container
22: Absorbent paper

Claims (8)

円筒状の胴部を有する放射性薬液の入った放射性薬液容器を収納する遮蔽容器の内装材であって、容器本体の開口部に係合する遮蔽容器係合部と、該遮蔽容器係合部に隣接し、放射性薬液容器の胴径とほぼ等しいが該胴径より大きい内径を有する薬液容器挿入部と、該薬液容器挿入部から下方に向かって略円錐台状に形成され、その下端縁より複数個の拡開用切込みにより設けられた薬液容器固定片よりなる薬液容器固定部を有し、該薬液容器固定部の長さ(L)は放射性薬液容器の胴長の1/2ないし1の長さであり、該薬液容器固定部は、放射性薬液容器を挿入したときに、放射性薬液容器の胴径と同じ内径にまで拡開することを特徴とする内装材。  An interior material of a shielding container for housing a radioactive chemical liquid container containing a radioactive chemical liquid having a cylindrical body, the shielding container engaging part engaging with the opening of the container body, and the shielding container engaging part A chemical solution container insertion portion that is adjacent and substantially equal to the trunk diameter of the radioactive chemical solution container but has an inner diameter larger than the trunk diameter, and is formed in a substantially truncated cone shape downward from the chemical solution container insertion portion, and a plurality of them are formed from the lower end edge. It has a chemical solution container fixing part made up of a chemical solution container fixing piece provided by a notch for expansion, and the length (L) of the chemical solution container fixing part is 1/2 to 1 length of the trunk length of the radioactive chemical solution container The interior material is characterized in that the chemical liquid container fixing part expands to the same inner diameter as the body diameter of the radioactive chemical liquid container when the radioactive chemical liquid container is inserted. 薬液容器固定部が、3ないし12個の薬液容器固定片によって構成されることを特徴とする請求項1記載の内装材。  The interior material according to claim 1, wherein the chemical solution container fixing portion is composed of 3 to 12 chemical solution container fixing pieces. 薬液容器固定部が、6ないし8個の薬液容器固定片によって構成されることを特徴とする請求項1記載の内装材。  The interior material according to claim 1, wherein the chemical solution container fixing portion is constituted by 6 to 8 chemical solution container fixing pieces. 請求項1ないし請求項3記載のいずれかに記載の内装材であって、プラスチックで製したことを特徴とする内装材。  The interior material according to any one of claims 1 to 3, wherein the interior material is made of plastic. 放射性薬液の入った放射性薬液容器を収納する遮蔽容器の内装材であって、容器本体の開口部に係合する遮蔽容器係合部と、該遮蔽容器係合部に隣接し、放射性薬液容器の胴径より大きい内径を有する薬液容器挿入部と、該薬液容器挿入部から下方に向かって略円錐台状に形成され、その下端縁より複数個の拡開用切込みにより設けられた薬液容器固定片よりなる薬液容器固定部を有し、該薬液容器固定部の長さ(L)は放射性薬液容器の胴長の1/2ないし1の長さであるとともに、薬液容器固定部の外周に伸縮性リングを着けたことを特徴とする内装材。A interior material of the shielding container for storing a radioactive solution container of radioactive solution, a shielding container engaging portion engaged with the opening of the container body, adjacent the shielding container engaging portion, the radioactive solution container A chemical solution container insertion portion having an inner diameter larger than the body diameter, and a chemical solution container fixing piece formed in a substantially truncated cone shape downward from the chemical solution container insertion portion and provided by a plurality of expanding cuts from the lower end edge thereof And a length (L) of the chemical solution container fixing portion is 1/2 to 1 of the trunk length of the radioactive chemical solution container, and is stretchable on the outer periphery of the chemical solution container fixing portion. Interior material characterized by wearing a ring. 放射性薬液の入った放射性薬液容器を収納する遮蔽容器の内装材であって、容器本体の開口部に係合する遮蔽容器係合部と、該遮蔽容器係合部に隣接し、放射性薬液容器の胴径より大きい内径を有する薬液容器挿入部と、該薬液容器挿入部から下方に向かって略円錐台状に形成され、その下端縁より複数個の拡開用切込みにより設けられた薬液容器固定片よりなる薬液容器固定部を有し、該薬液容器固定部の長さ(L)は放射性薬液容器の胴長の1/2ないし1の長さであるとともに、薬液容器固定部の内表面に滑り止め加工を施したことを特徴とする内装材。  An interior material of a shielding container for housing a radioactive chemical solution container containing a radioactive chemical solution, a shielding container engaging portion engaging with an opening of the container main body, and adjacent to the shielding container engaging portion, A chemical solution container insertion portion having an inner diameter larger than the body diameter, and a chemical solution container fixing piece formed in a substantially truncated cone shape downward from the chemical solution container insertion portion and provided by a plurality of expanding cuts from the lower end edge thereof And a length (L) of the chemical solution container fixing portion is ½ to 1 of the trunk length of the radioactive chemical solution container and slips on the inner surface of the chemical solution container fixing portion. An interior material characterized by a stop. 請求項1ないし請求項6のいずれかに記載の内装材を備えた遮蔽容器。  The shielding container provided with the interior material in any one of Claims 1 thru | or 6. 請求項7記載の遮蔽容器に、放射性薬液の入った放射性薬液容器を収納した放射性薬液収納遮蔽容器。  The radioactive chemical | medical solution storage shielding container which accommodated the radioactive chemical | medical solution container which contained the radioactive chemical | medical solution in the shielding container of Claim 7.
JP23915795A 1995-08-24 1995-08-24 Interior material for shielding containers for storing radioactive chemical containers Expired - Lifetime JP3643150B2 (en)

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JP23915795A JP3643150B2 (en) 1995-08-24 1995-08-24 Interior material for shielding containers for storing radioactive chemical containers

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JP23915795A JP3643150B2 (en) 1995-08-24 1995-08-24 Interior material for shielding containers for storing radioactive chemical containers

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JP3643150B2 true JP3643150B2 (en) 2005-04-27

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EP1930913A1 (en) * 2006-12-08 2008-06-11 Ion Beam Applications S.A. Shielding for ionizing radiation
JP4796613B2 (en) * 2008-11-04 2011-10-19 日本メジフィジックス株式会社 Interior material of shielding container for storing radioactive chemical container

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