JP3875346B2 - Fixing and cushioning - Google Patents

Fixing and cushioning Download PDF

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JP3875346B2
JP3875346B2 JP08675097A JP8675097A JP3875346B2 JP 3875346 B2 JP3875346 B2 JP 3875346B2 JP 08675097 A JP08675097 A JP 08675097A JP 8675097 A JP8675097 A JP 8675097A JP 3875346 B2 JP3875346 B2 JP 3875346B2
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radiation shield
injection
syringe body
fixing
shield cylinder
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JP08675097A
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JPH10277152A (en
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幸治 関口
正太郎 勝田
俊博 宮永
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株式会社第一ラジオアイソトープ研究所
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【0001】
【発明の属する技術分野】
本発明は、固定・緩衝具、更に詳細には放射性溶液を封入した注射用シリンジ体を放射線シールド筒体に収納するに際し、当該注射用シリンジ体の先部外周部と当該放射線シールド筒体の先部内周部との間隙に介在使用するための固定・緩衝具に関する。
【0002】
【従来の技術】
放射性医薬品には、例えば心臓疾患の診断に用いられる塩化タリウム注射液や悪性腫瘍・炎症性病変等の診断に用いられるクエン酸ガリウム注射液等がある。これらの放射性注射液は、その投与時において投与者ができるだけ放射線被爆を受けずに、しかも患者に対しても安全確実に投与が行われる必要がある。
【0003】
従来、このような放射性注射液の投与に用いられる注射器としては、例えば特開平2−95380号公報に開示する技術が知られている。
この種の放射性溶液用注射器は、ガラス、プラスチック等からなる注射用シリンジ体と、この注射用シリンジ体を収納する鉛ガラス製透視窓付きの放射線シールド筒体を備え、注射用シリンジ体内には、該注射用シリンジ体内に嵌合するガスケットと注射用シリンジ体の先部に装着したパッキン部材により放射性溶液を封止状態に充填する。そして、ガスケットには、使用時において注射用シリンジ体の後端から挿入されるプランジャーロッドの一端が結合され、また放射線シールド筒体の先部開口部から外方に突出するパッキン部材の先部には両切針が挿着される構成になっている。
放射線シールド筒体は鉛、タングステン合金等の筒体からなり、この筒体は、注射用シリンジ体が容易に抜き差しできるように注射用シリンジ体の外径より僅かに大きい内径に形成されているとともに、その側周壁には、注射用シリンジ体内の放射性溶液の残存量や血管確保の状態を視認するための鉛ガラス製透視窓が筒体の軸方向に形成されている。また、注射用シリンジ体を放射線シールド筒体に挿入した状態の放射線シールド筒体の後端には、注射用シリンジ体の後端を放射線シールド筒体に保持するためのフランジキャップが着脱可能に取り付けられている。
【0004】
【発明が解決しようとする課題】
上記のような放射性溶液用注射器の注射用シリンジ体及び放射線シールド筒体には、長さや径等の寸法に加工上のばらつきがあるため、これらのばらつきを吸収し、かつ放射線シールド筒体に対して注射用シリンジ体を挿脱する際に互いに干渉しないようにするために、放射線シールド筒体の内面と注射用シリンジ体の外面間、及びパッキン部材の外周面と該パッキン部材が挿通される放射線シールド筒体の先部開口部間に必要最小限の隙間を形成しておく必要がある。このため、フランジキャップを放射線シールド筒体の後端に装着して注射用シリンジ体の後端を放射線シールド筒体に保持しても、注射用シリンジ体の先部部分は放射線シールド筒体に対して自由に揺動できる状態におかれている。その結果、輸送時の振動や落下時の衝撃等により、注射用シリンジ体の揺動端が放射線シールド筒体の内面に強く衝突するなどして、変形したり破損したりするおそれがあるほか、破損した場合には放射性溶液が漏出するおそれがあった。
また、放射線シールド筒体に対する注射用シリンジ体先部部分の支持が不安定であるため、医者等の投与者が放射線シールド筒体を手に持って放射性溶液を患者に注射する際、患者の細い血管等の薬剤注入部位に注射針の先部を導入位置決めしようとしても、薬剤注入部位に対する注射針の先部がふらついてしまい、刺針時の導入位置決めを困難にする問題があった。
本発明は、上記のような点に鑑みなされたもので、注射用シリンジ体を放射線シールド筒体にふらつきなく安定に、かつ確実に保持できるとともに刺針時の導入位置決めを容易にすることのできる固定・緩衝具を提供することを目的とする。
【0005】
【課題を解決するための手段】
本発明は、放射性溶液を封入した注射用シリンジ体の放射線シールド筒体への挿入側先部と該先部に対向する放射線シールド筒体の先部内周面に係合し、前記注射用シリンジ体の挿入方向の押圧力により該挿入方向に圧縮変形するとともに径方向に変形して前記注射用シリンジ体の先部を前記放射線シールド筒体に対して支持する固定・緩衝具であって、当該固定・緩衝具が、前記放射線シールド筒体の先部内周面に係合する短尺筒状で厚肉の支持基部と、前記支持基部の一端から前記注射用シリンジ体の先部方向に同軸に延在し、該注射用シリンジ体の先部周縁部に係合する弾性変形可能な短尺筒状で薄肉の弾性支持部とから構成されていると共に、放射線シールド筒体の鉛ガラス製透視窓と対向する前記弾性支持部及び支持基部に切欠きが形成され、かつ前記弾性支持部及び支持基部の少なくとも一方に軸線方向に伸びるスリットが形成されていることを特徴とする固定・緩衝具により上記目的を達成したものである。
斯かる構成においては、注射用シリンジ体が放射線シールド筒体内にセットされ、フランジキャップが被冠されると、固定・緩衝具が注射用シリンジ体の挿入方向の押圧力により圧縮変形、特に好ましくは軸方向に圧縮変形するとともに径方向に変形して注射用シリンジ体の先部を放射線シールド筒体に保持する。よって、注射用シリンジ体を放射線シールド筒体にふらつきなく安定に、かつ確実に支持し得る。
【0006】
更に、固定・緩衝具の弾性支持部の先部が、放射線シールド筒体の先部内周壁に係合した支持基部を介して注射用シリンジ体の先部を保持するから、注射用シリンジ体を放射線シールド筒体にふらつきなく安定に、かつ確実に支持できる。
【0007】
更にまた、固定・緩衝具の切欠きを鉛ガラス製透視窓の先部側に合わせることにより、固定・緩衝具が鉛ガラス製透視窓の先部側の視界が確保でき、注射用シリンジ体内の放射性溶液の残量を最後まで鉛ガラス製透視窓を通して視認し得るほか、スリットにより支持基部の径方向の弾性変形を容易にし、支持基部を放射線シールド筒体の先部内周壁にフイットできる。
【0008】
また本発明は、前記固定・緩衝具が合成樹脂材から成形されるものである。
斯かる構成においては、放射線シールド筒体からの注射用シリンジ体の分離が容易になり、固定・緩衝具の放射線シールド筒体からの分離も容易になし得る。
【0009】
【発明の実施の形態】
(実施の形態1)
図1〜図6により、本発明にかかる固定・緩衝具の実施の形態について説明する。図1は本発明の実施の形態1における固定・緩衝具を装着した放射性溶液用注射器の全体の構成を示す分解斜視図、図2は放射性溶液用注射器を組み立てた状態の断面図である。
図1及び図2において、放射性溶液用注射器は、注射用シリンジ体10、放射線シールド筒体20、固定・緩衝具30及びフランジキャップ40を備える。
注射用シリンジ体10は、ガラス、プラスチック等の所定径の透明筒状体から成形されていると共に、その先部には注射用シリンジ体10の径より十分に小さい径の筒状をなす針取付部101が同軸に形成され、後端には径方向に伸びる保持用鍔部102が形成されている。また、注射用シリンジ体10の先端に針取付部101を形成し、放射性溶液を封止するパッキン部材103が装着され、注射用シリンジ体10内にはガスケット104が注射用シリンジ体10の長手方向にスライド可能に嵌合されている。ガスケット104には、注射用シリンジ体10の後端開口から挿入されるプランジャーロッド105の一端が螺合等の手段により結合されている。また、ガスケット104とパッキン部材103により区画される注射用シリンジ体10内には放射性溶液が封止状態に充填される。
【0010】
放射線シールド筒体20は、放射性溶液を充填した注射用シリンジ体10を収納するもので、両端が開口する鉛、タングステン合金等の筒体から成形される。この放射線シールド筒体20の内径は、注射用シリンジ体10が容易に抜き差しできるように注射用シリンジ体10の外径より僅かに大きい径に形成されていると共に、その側周壁には、注射用シリンジ体10内の放射性溶液の残存量や血管確保の状態を視認するための鉛ガラス製の細長い透視窓201が放射線シールド筒体20の先部近傍から後方に向かい軸方向に沿って形成されている。
なお、放射線シールド筒体20の先部開口部から外方に突出するパッキン部材103の先部には、図示省略した両切針が挿着される構成になっている。
また、放射線シールド筒体20の後端部外周には合成樹脂製のフランジ筒部202が嵌着されている。このフランジ筒部202の側壁には、注射操作の際に指が引っ掛けられる一対の指止め部202Aが周方向に180度の間隔をおいて径方向に突出して形成され、また、放射線シールド筒体20の後端側の端面には、注射用シリンジ体10を放射線シールド筒体20に挿着した時に、その保持用鍔部102が係合する切欠き202Bが形成され、さらに、フランジ筒部202の側壁には、フランジキャップ40が係止する係止部202Cが複数突設されている。
【0011】
フランジキャップ40は、放射線シールド筒体20に挿着された注射用シリンジ体10の後端を放射線シールド筒体20に保持するためのもので、その天板の中央部分には、プランジャーロッド105が挿通される穴401が形成されており、さらに、フランジキャップ40の側壁には、フランジ筒部202の両突部202Cに係止する係止片402が形成されている。
【0012】
固定・緩衝具30は、放射線シールド筒体20内に挿入された注射用シリンジ体10の挿入先部を支持するもので、注射用シリンジ体10の挿入先部と該先部に対向する放射線シールド筒体20の先部内周面間に介在され、注射用シリンジ体10の挿入方向の押圧力により該挿入方向に圧縮変形するとともに径方向に変形することにより、注射用シリンジ体10の先部を放射線シールド筒体20に対し支持できる構成になっている。
このために固定・緩衝具30は、図3〜図5及び図6に示すように、放射線シールド筒体20の先部内周面に係合する短尺筒状で厚肉の支持基部301と、この支持基部301の後端から注射用シリンジ体10の先部方向に同軸に延在し、該注射用シリンジ体10の先部周縁部に係合する弾性変形可能な短尺筒状で薄肉の弾性支持部302とから構成される。そして、放射線シールド筒体20の鉛ガラス製透視窓201の先部側と対向する固定・緩衝具30の弾性支持部302及び支持基部301には切欠き303が形成され、さらに支持基部301(または弾性支持部302)には軸線方向に伸びるスリット304が形成されている。
【0013】
なお、上記実施の形態における固定・緩衝具30の各部の寸法は、例えば、図5に示すように設定され、そして、固定・緩衝具30の外径(弾性支持部302の先部外径)を放射線シールド筒体20の内径より僅かに小さくすることにより、固定・緩衝具30の放射線シールド筒体20への挿脱を容易にする。また、固定・緩衝具30はポリエチレン、ポリプロピレン、ポリ塩化ビニル、ポリカーボネイト、ポリスチレン、エチレンビニルアルコール、PET等の合成樹脂材から成形され、これにより、放射線シールド筒体20の内周面との滑動性を確保して、固定・緩衝具30の放射線シールド筒体20への挿脱を更に容易にしている。
【0014】
上記のように構成された放射性溶液用注射器において、注射用シリンジ体10を放射線シールド筒体20内にセットする場合は、まず、固定・緩衝具30を注射用シリンジ体10の先部に装着したパッキン部材103に係合した状態で、注射用シリンジ体10をパッキン部材103側から放射線シールド筒体20の後端部開口から放射線シールド筒体20内に挿入する。その後、放射線シールド筒体20内の先部に達した固定・緩衝具30を円周方向に回して、その切欠き303を鉛ガラス製透視窓201と一致するように調整し、鉛ガラス製透視窓201の先部側が固定・緩衝具30により視界が妨げられないようにする。
次いで、注射用シリンジ体10の保持用鍔部102をフランジ筒部202の切欠き202Bに係合した後、フランジキャップ40をフランジ筒部202に被冠して、その係止片402をフランジ筒部202の係止部202Cに弾発的に係止させる。これにより、フランジキャップ40は放射線シールド筒体20の後端部に装着されるとともに、注射用シリンジ体10の後端部を放射線シールド筒体20に固定保持する。
この時、注射用シリンジ体10はフランジキャップ40により放射線シールド筒体20への差し込み方向に押圧されるため、固定・緩衝具30の支持基部301の挿入先部は、図6(A)に示すように、放射線シールド筒体20の先部内周に形成された段部20Aに押し当てられ、かつ先部外周は放射線シールド筒体20の先部内周に係合する。そして、フランジキャップ40が放射線シールド筒体20の後端部に装着された状態では、固定・緩衝具30の弾性支持部302の拡開先部縁が注射用シリンジ体10の先部周縁部に当接することにより、該弾性支持部302が軸方向に圧縮されるとともに、その拡開先部縁部が図6(B)に示すように、注射用シリンジ体10の先部周縁部の外径形状にならって拡径方向の弾性変形される。これにより、弾性支持部302の拡開先部は、図6(B)に示すように、放射線シールド筒体20の段部20A及び先部内周壁に係合する支持基部301を介して注射用シリンジ体10の先部を放射線シールド筒体20の中心に位置させた状態で安定に支持することになる。
【0015】
このように注射用シリンジ体10の先部は放射線シールド筒体20の内周壁に固定・緩衝具30により、ふらつきなく安定に保持することができるとともに、注射用シリンジ体10及び放射線シールド筒体20に長さや径等の寸法に加工上のばらつきがあっても、これらのばらつきを固定・緩衝具30の弾性支持部302で吸収でき、しかも輸送時の振動や落下時の衝撃等が放射性溶液用注射器に加わっても、これらの振動や衝撃から注射用シリンジ体10を保護でき、注射用シリンジ体10の変形や破損を未然に防止できる。
また、注射用シリンジ体10の先部部分は固定・緩衝具30により放射線シールド筒体20にふらつきなく安定に保持されるため、医者等の投与者が放射線シールド筒体20を手に持って放射性溶液を患者に注射する際、患者の細い血管等の薬剤注入部位への刺針時における注射針先部の導入位置決めが安定し、薬剤注入操作を容易にする。
【0016】
また、本実施の形態における固定・緩衝具30の外径(弾性支持部302の先部外径)は放射線シールド筒体20の内径より僅かに小さくし、かつ固定・緩衝具30は合成樹脂材から成形されているため、注射用シリンジ体10を放射線シールド筒体20から分離するに際し、フランジキャップ40を放射線シールド筒体20から取り外して、固定・緩衝具30への押圧力を取り去れば、固定・緩衝具30は直ちに元の形状に復帰する。従って、使用済みの注射用シリンジ体10を廃棄し、放射線シールド筒体20をリサイクルするに際し、フランジキャップ40を放射線シールド筒体20から取り外して放射線シールド筒体20を逆さにすれば、ゴムパッキンのように接着保持されることなく、注射用シリンジ体10を自重で自動的に分離することができ、かつ、元の形状に復帰した固定・緩衝具30も放射線シールド筒体20内から容易に分離でき、廃棄することができる。また、固定・緩衝具30に形成した切欠き303を鉛ガラス製透視窓201の先部側に合わせることにより、固定・緩衝具30が鉛ガラス製透視窓201の先部側の視界が確保でき、注射用シリンジ体10内の放射性溶液の残量を最後まで鉛ガラス製透視窓201を通して視認することができる。
【0017】
因に、注射用シリンジ体10に充填されている放射性溶液を患者等に注射する場合は、フランジキャップ40の穴401を通して挿入されるプランジャーロッド105の挿入端を注射用シリンジ体10内のガスケット104に結合し、かつ、パッキン部材103に図示省略の両切針の一方を差し込み、両切針の他方を患者の血管に刺し込んだ状態で、プランジャーロッド105を差し抜き方向に移動すれば、注射用シリンジ体10内の放射性溶液を注射することが可能になる。
【0018】
(実施の形態2)
図7〜図10により本発明にかかる固定・緩衝具の実施の形態2について説明する。
この実施の形態2における固定・緩衝具50は、図1に示す放射線シールド筒体より径の大きい放射線シールド筒体20に適用されるもので、この固定・緩衝具50の短尺筒状で厚肉の支持基部501は、固定・緩衝具30の場合より放射線シールド筒体20の内径が大きくなった分だけ厚く形成され、そして、この支持基部501の外周には、放射線シールド筒体20の先部内壁のテーパ面20Bに一致するように、先部に行くに従い径が小さくなるテーパ面に形成されている。また、支持基部501の後端には、その内周縁から注射用シリンジ体10の先部方向に同軸に延在し、該注射用シリンジ体10の先部周縁部に係合する弾性変形可能な薄肉でホーン状の弾性支持部502が形成されている。
また、図1に示す放射線シールド筒体20の鉛ガラス製透視窓201の先部側と対向する固定・緩衝具50の弾性支持部502及び支持基部501には切欠き503が形成され、さらに支持基部501(または弾性支持部502)には軸線方向に伸びるスリット504が形成されている。
【0019】
このように構成された固定・緩衝具50を用いて注射用シリンジ体10を放射線シールド筒体20内にセットした場合、図10に示すように、固定・緩衝具50の弾性支持部502は注射用シリンジ体10の先部外周縁の外径形状に拡径方向及び圧縮方向に弾性変形される。これにより、弾性支持部502の拡開先部は、放射線シールド筒体20の先部内壁のテーパ面20B及び先部内周壁に係合する固定・緩衝具50の支持基部501を介して注射用シリンジ体10の先部を放射線シールド筒体20の中心に位置させた状態で安定に支持することになる。
こような実施の形態2においても、上記実施の形態1と同様な作用効果が得られる。
【0020】
(実施の形態3)
図11により本発明にかかる固定・緩衝具の実施の形態3について説明する。
この実施の形態3においては、放射線シールド筒体20内にセットされた注射用シリンジ体10の先部を支持する固定・緩衝具60を、一端601が放射線シールド筒体20の先部内周面に係合し、他端602が注射用シリンジ体10の先部周縁部に係合する合成樹脂製の蛇腹体603から構成したものである。
このような実施の形態3においても、上記実施の形態1と同様な作用効果が得られる。
【0021】
(実施の形態4)
図12により本発明にかかる固定・緩衝具の実施の形態4について説明する。
この実施の形態4においては、放射線シールド筒体20内にセットされた注射用シリンジ体10の先部を支持する固定・緩衝具70を、一端に注射用シリンジ体10の先部周縁部に係合する係合面701を有し、他端に放射線シールド筒体20の先部内周面に係合する係合面702を有する合成樹脂製の筒体703から成形され、この筒体703には該筒体703の全長に亘り伸びるスリット704を形成することにより、筒体703を径方向に弾性変形できるようしたものである。
このような実施の形態4においても、上記実施の形態1とほぼ同様な作用効果が得られる。
【0022】
(実施の形態5)
図13により本発明にかかる固定・緩衝具の実施の形態5について説明する。
この実施の形態5においては、放射線シールド筒体20内にセットされた注射用シリンジ体10の先部を支持する固定・緩衝具80を、一端に注射用シリンジ体10の先部周縁部に係合する係合面801を有し、他端に放射線シールド筒体20の先部内周面に係合する係合面802を有する合成樹脂製の筒体803から成形され、この筒体803には該筒体803の係合面801及び802から長手方向の中間に伸びるスリット804を円周方向に所定の間隔離して複数形成することにより、筒体803を径方向に弾性変形できるようにしたものである。
このような実施の形態5においても、上記実施の形態1とほぼ同様な作用効果が得られる。
【0023】
(実施の形態6)
図14により本発明にかかる固定・緩衝具の実施の形態6について説明する。
この実施の形態6においては、放射線シールド筒体20内にセットされた注射用シリンジ体10の先部を支持する固定・緩衝具90を、一端に注射用シリンジ体10の先部周縁部に係合する係合面901を有し、他端に放射線シールド筒体20の先部内周面に係合する係合面902を有する合成樹脂製の筒体903から成形され、この筒体903に該筒体903の係合面901及び902から円周方向に斜めに伸びるスリット904を円周方向に所定の間隔離して複数形成することにより、筒体903を径方向に弾性変形できるようにしたものである。
このような実施の形態6においても、上記実施の形態1とほぼ同様な作用効果が得られる。
【0024】
なお、上記実施の形態1及び実施の形態2では、固定・緩衝具30及び50の弾性支持部302及び502の注射用シリンジ体10と係合する先部縁部を拡径する方向に弾性変形する場合について説明したが、本発明はこれに限定されない。例えば、固定・緩衝具30及び50の弾性支持部302及び502の注射用シリンジ体10と係合する先部縁部を上記と逆に内方に弾性変形する構造にしてもよい。因に、外方に弾性変形する場合には、投与後注射用シリンジ体10を放射線シールド筒体20から引き抜くと本発明固定・緩衝具が放射線シールド筒体20内側に嵌着残存し、他方内方に弾性変形する場合には、注射用シリンジ体外周面に嵌着された状態にて放射線シールド筒体20から引き抜かれることになる。また、上記実施の形態3〜6では、固定・緩衝具に鉛ガラス製透視窓201の先部側が遮蔽されないようにするための切欠きを省略した場合について説明したが、この実施の形態3〜6においても切欠きを形成するようにしてもよい。
【0025】
【発明の効果】
以上の説明から明らかなように本発明によれば、注射用シリンジ体が放射線シールド筒体内にセットされ、フランジキャップが被冠されると、固定・緩衝具が注射用シリンジ体の挿入方向の押圧力により軸方向に圧縮変形するとともに径方向に変形して注射用シリンジ体の先部を放射線シールド筒体に保持するから、注射用シリンジ体を放射線シールド筒体にふらつきなく安定に、かつ確実に支持できるとともに、注射用シリンジ体及び放射線シールド筒体の寸法に加工上のばらつきがあっても、これらのばらつきを固定・緩衝具の弾性支持部で吸収でき、しかも輸送時の振動や落下時の衝撃等が放射性溶液用注射器に加わっても、これらの振動や衝撃から注射用シリンジ体を保護して注射用シリンジ体の変形や破損を未然に防止できる。
また、注射用シリンジ体の先部部分は固定・緩衝具によりふらつきなく安定に保持されるため、患者の細い血管等の薬剤注入部位への刺針時における注射針先部の導入位置決めが安定し、薬剤注入操作を容易に行うことができる。
【0026】
また本発明によれば、固定・緩衝具の弾性支持部の先部が、放射線シールド筒体の先部内周壁に係合した支持基部を介して注射用シリンジ体の先部を保持するから、注射用シリンジ体を放射線シールド筒体にふらつきなく安定に、かつ確実に支持できる。
また本発明によれば、固定・緩衝具の切欠きを鉛ガラス製透視窓の先部側に合わせることにより、固定・緩衝具が鉛ガラス製透視窓の先部側を遮蔽するのを防止でき、注射用シリンジ体内の放射性溶液の残量を最後まで鉛ガラス製透視窓を通して視認できるほか、スリットにより支持基部の径方向の弾性変形を容易にし、支持基部を放射線シールド筒体の先部内周壁にフイットできる。
また本発明によれば、固定・緩衝具を合成樹脂材から成形することにより投与後に於て、放射線シールド筒体からの注射用シリンジ体の分離が容易になり、固定・緩衝具の放射線シールド筒体又は注射用シリンジ体からの分離も容易になし得るという効果がある。
【図面の簡単な説明】
【図1】本発明の実施の形態1における固定・緩衝具を装着した放射性溶液用注射器の全体の構成を示す分解斜視図である。
【図2】本発明の実施の形態1における固定・緩衝具を装着した放射性溶液用注射器を組み立てた状態の断面図である。
【図3】本発明の実施の形態1における固定・緩衝具の側面図である。
【図4】図3の平面図である。
【図5】図3の縦断側面図である。
【図6】(A)、(B)は本発明の実施の形態1における固定・緩衝具と放射線シールド筒体及び注射用シリンジ体との関係を示す断面図である。
【図7】本発明の実施の形態2における固定・緩衝具の側面図である。
【図8】図7の平面図である。
【図9】図7の縦断側面図である。
【図10】本発明の実施の形態2における固定・緩衝具と放射線シールド筒体及び注射用シリンジ体との関係を示す断面図である。
【図11】本発明の実施の形態3における固定・緩衝具の斜視図である。
【図12】本発明の実施の形態4における固定・緩衝具の斜視図である。
【図13】本発明の実施の形態5における固定・緩衝具の斜視図である。
【図14】本発明の実施の形態6における固定・緩衝具の斜視図である。
【符号の説明】
10:注射用シリンジ体
101:針取付部
103:パッキン部材
104:ガスケット
105:プランジャーロッド
20:放射線シールド筒体
201:鉛ガラス製透視窓
30:固定・緩衝具
301:支持基部
302:弾性支持部
40:フランジキャップ
50:固定・緩衝具
501:支持基部
502:弾性支持部
60:固定・緩衝具
603:蛇腹体
70:固定・緩衝具
703:筒体
704:スリット
80:固定・緩衝具
803:筒体
804:スリット
90:固定・緩衝具
903:筒体
904:スリット
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fixing / buffering device, and more specifically, when a syringe body for injection filled with a radioactive solution is housed in a radiation shield cylinder, the outer periphery of the tip of the syringe body for injection and the tip of the radiation shield cylinder The present invention relates to a fixing / cushioning tool for intervening use in a gap with the inner periphery of the part.
[0002]
[Prior art]
Radiopharmaceuticals include, for example, thallium chloride injection used for diagnosis of heart disease and gallium citrate injection used for diagnosis of malignant tumors / inflammatory lesions. These radioactive injection solutions need to be administered safely and reliably to the patient without being exposed to radiation as much as possible at the time of administration.
[0003]
Conventionally, for example, a technique disclosed in Japanese Patent Application Laid-Open No. 2-95380 is known as a syringe used for administration of such a radioactive injection solution.
This type of radioactive solution syringe includes an injection syringe body made of glass, plastic, and the like, and a radiation shield cylinder with a lead glass transparent window that houses the injection syringe body. The radioactive solution is filled in a sealed state by a gasket fitted in the syringe body and a packing member attached to the tip of the syringe body. The gasket is coupled with one end of a plunger rod that is inserted from the rear end of the syringe body for injection during use, and the front end of the packing member that protrudes outward from the front end opening of the radiation shield cylinder Both cutting needles are configured to be inserted.
The radiation shield cylinder is made of lead, tungsten alloy or the like, and the cylinder is formed with an inner diameter slightly larger than the outer diameter of the injection syringe body so that the injection syringe body can be easily inserted and removed. The side peripheral wall is formed with a lead glass see-through window in the axial direction of the cylinder for visually confirming the remaining amount of the radioactive solution in the syringe body for injection and the state of securing the blood vessel. A flange cap for holding the rear end of the syringe for injection on the radiation shield cylinder is detachably attached to the rear end of the radiation shield cylinder with the injection syringe body inserted into the radiation shield cylinder. It has been.
[0004]
[Problems to be solved by the invention]
The injection syringe body and radiation shield cylinder of the syringe for radioactive solution as described above have processing variations in dimensions such as length and diameter, so these variations are absorbed, and the radiation shield cylinder In order not to interfere with each other when inserting and removing the syringe body for injection, radiation between the inner surface of the radiation shield cylinder and the outer surface of the syringe body for injection and the outer peripheral surface of the packing member and the packing member is inserted. It is necessary to form a necessary minimum gap between the opening portions of the shield cylinder. For this reason, even if the flange cap is attached to the rear end of the radiation shield cylinder and the rear end of the syringe body for injection is held in the radiation shield cylinder, the front portion of the syringe body for injection remains against the radiation shield cylinder. And can swing freely. As a result, there is a risk that the oscillating end of the syringe body for injection will strongly collide with the inner surface of the radiation shield cylinder due to vibration during transportation or impact when dropped, etc. In the case of damage, the radioactive solution may leak out.
In addition, since the support of the injection syringe body tip portion with respect to the radiation shield cylinder is unstable, when the administrator such as a doctor holds the radiation shield cylinder in his hand and injects the radioactive solution into the patient, the patient's thin Even if it is attempted to introduce and position the tip of the injection needle at a drug injection site such as a blood vessel, the tip of the injection needle fluctuates with respect to the drug injection site, which makes it difficult to position the injection at the time of puncture.
The present invention has been made in view of the above points, and can fix the injection syringe body to the radiation shield cylinder stably and surely without wobbling and facilitate the introduction positioning at the time of puncture.・ To provide shock absorbers.
[0005]
[Means for Solving the Problems]
The present invention relates to a syringe body for injection which is engaged with a distal end portion on the side of insertion of a syringe body for injection enclosing a radioactive solution into a radiation shield cylinder body and an inner peripheral surface of the front portion of the radiation shield cylinder body facing the front section. Due to the pressing force in the insertion direction Compressively deform in the insertion direction and deform in the radial direction Supports the tip of the syringe body for injection against the radiation shield cylinder A fixing and buffering device, wherein the fixing and buffering device is a short cylindrical and thick support base that engages with the inner peripheral surface of the front portion of the radiation shield cylindrical body, and one end of the support base for the injection. Consisting of a thin elastic support portion that is elastically deformable and has a thin wall that extends coaxially in the direction of the tip of the syringe body and engages the peripheral edge of the tip of the syringe body for injection, and a radiation shield A notch is formed in the elastic support portion and the support base facing the lead glass transparent window of the cylindrical body, and a slit extending in the axial direction is formed in at least one of the elastic support portion and the support base. The above-mentioned object is achieved by a fixing / buffer device characterized by the above.
In such a configuration, when the syringe body for injection is set in the radiation shield cylinder and the flange cap is covered, the fixing / buffer is compressed and deformed by the pressing force in the insertion direction of the syringe body for injection, particularly preferably The tip part of the syringe body for injection is held in the radiation shield cylinder by being compressed and deformed in the axial direction and deformed in the radial direction. Therefore, the syringe body for injection can be supported stably and reliably without wobbling on the radiation shield cylinder.
[0006]
More Since the tip of the elastic support portion of the fixing / buffering device holds the tip of the syringe body for injection via the support base engaged with the inner wall of the tip of the radiation shield cylinder, the syringe body for injection is shielded from radiation. The cylinder can be supported stably and reliably without wobbling.
[0007]
Furthermore By aligning the notch of the fixing / buffer to the front side of the lead glass viewing window, the fixing / buffer can secure the field of view of the front side of the lead glass viewing window, and the radioactive solution in the syringe body for injection In addition to being able to visually recognize the remaining amount through the lead glass transparent window, the support base can be easily elastically deformed in the radial direction by the slit, and the support base can be fitted to the inner peripheral wall of the front portion of the radiation shield cylinder.
[0008]
In the present invention, the fixing / buffering device is molded from a synthetic resin material.
In such a configuration, the syringe body for injection can be easily separated from the radiation shield cylinder, and the fixing / buffer can be easily separated from the radiation shield cylinder.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
(Embodiment 1)
1 to 6, an embodiment of a fixing / buffering device according to the present invention will be described. FIG. 1 is an exploded perspective view showing an overall configuration of a radioactive solution syringe equipped with a fixing / buffer device according to Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view of the assembled radioactive solution syringe.
1 and 2, the radioactive solution syringe includes an injection syringe body 10, a radiation shield cylinder 20, a fixing / buffer 30, and a flange cap 40.
The syringe body 10 for injection is formed from a transparent cylindrical body having a predetermined diameter such as glass or plastic, and a needle having a cylindrical shape sufficiently smaller than the diameter of the syringe body 10 for injection is attached to the tip thereof. The portion 101 is formed coaxially, and a holding collar portion 102 extending in the radial direction is formed at the rear end. Further, a needle mounting portion 101 is formed at the tip of the syringe body 10 for injection, and a packing member 103 that seals the radioactive solution is attached. A gasket 104 is placed in the syringe body 10 in the longitudinal direction of the syringe body 10 for injection. It is slidably fitted to. One end of a plunger rod 105 inserted from the rear end opening of the syringe body 10 for injection is coupled to the gasket 104 by means such as screwing. Moreover, the radioactive solution is filled in a sealed state in the syringe body 10 for injection partitioned by the gasket 104 and the packing member 103.
[0010]
The radiation shield cylinder 20 houses the syringe body 10 for injection filled with a radioactive solution, and is formed from a cylinder of lead, tungsten alloy or the like that is open at both ends. The inner diameter of the radiation shield cylinder 20 is formed to be slightly larger than the outer diameter of the syringe body 10 for injection so that the syringe body 10 can be easily inserted and removed. An elongated see-through window 201 made of lead glass for visually recognizing the remaining amount of radioactive solution in the syringe body 10 and the state of blood vessel securing is formed along the axial direction from the vicinity of the front portion of the radiation shield cylinder 20 to the rear. Yes.
It should be noted that both cutting needles (not shown) are inserted into the tip of the packing member 103 that protrudes outward from the tip opening of the radiation shield cylinder 20.
Further, a flange cylinder 202 made of synthetic resin is fitted on the outer periphery of the rear end of the radiation shield cylinder 20. A pair of finger stoppers 202A on which a finger is hooked during an injection operation are formed on the side wall of the flange cylinder 202 so as to protrude in the radial direction with an interval of 180 degrees in the circumferential direction, and the radiation shield cylinder 20 is formed with a notch 202B that engages with the holding collar 102 when the syringe body 10 for injection is inserted into the radiation shield cylinder 20, and further, the flange cylinder 202 A plurality of locking portions 202C for locking the flange cap 40 are provided on the side wall.
[0011]
The flange cap 40 is for holding the rear end of the syringe body 10 for injection inserted into the radiation shield cylinder 20 to the radiation shield cylinder 20. A plunger rod 105 is provided at the center of the top plate. Is inserted, and a locking piece 402 is formed on the side wall of the flange cap 40 to be locked to both protrusions 202C of the flange cylinder 202.
[0012]
The fixing / buffer 30 supports an insertion destination part of the syringe body 10 for injection inserted into the radiation shield cylinder 20, and a radiation shield facing the insertion destination part of the syringe body 10 and the tip part. The tip of the syringe body 10 for injection is interposed between the inner peripheral surfaces of the tip of the cylindrical body 20 and is compressed and deformed in the insertion direction and deformed in the radial direction by the pressing force in the insertion direction of the syringe body 10 for injection. The radiation shield cylinder 20 can be supported.
For this purpose, as shown in FIGS. 3 to 5 and 6, the fixing / buffer 30 includes a short cylindrical and thick support base 301 that engages with the inner peripheral surface of the front portion of the radiation shield cylindrical body 20, An elastically deformable short cylindrical thin-walled elastic support that extends coaxially from the rear end of the support base 301 toward the tip of the syringe body 10 for injection and engages with the peripheral edge of the tip of the syringe body 10 for injection. Part 302. A notch 303 is formed in the elastic support portion 302 and the support base portion 301 of the fixing / buffer 30 facing the front side of the lead glass see-through window 201 of the radiation shield cylinder 20, and the support base portion 301 (or The elastic support 302) is formed with a slit 304 extending in the axial direction.
[0013]
In addition, the dimension of each part of the fixing / buffer 30 in the above embodiment is set as shown in FIG. 5, for example, and the outer diameter of the fixing / buffer 30 (the outer diameter of the tip of the elastic support portion 302). Is made slightly smaller than the inner diameter of the radiation shield cylinder 20 to facilitate insertion / removal of the fixing / buffer 30 to the radiation shield cylinder 20. Further, the fixing / buffer 30 is formed from a synthetic resin material such as polyethylene, polypropylene, polyvinyl chloride, polycarbonate, polystyrene, ethylene vinyl alcohol, PET, etc., and thereby slidable with the inner peripheral surface of the radiation shield cylinder 20. Is secured, and the insertion / removal of the fixing / buffer 30 to the radiation shield cylinder 20 is further facilitated.
[0014]
In the radioactive solution syringe configured as described above, when the syringe body 10 for injection is set in the radiation shield cylinder 20, first, the fixing / buffer 30 is attached to the tip of the syringe body 10 for injection. The syringe body 10 for injection is inserted into the radiation shield cylinder 20 from the opening of the rear end portion of the radiation shield cylinder 20 from the packing member 103 side while being engaged with the packing member 103. Thereafter, the fixing / buffer 30 that has reached the tip in the radiation shield cylinder 20 is rotated in the circumferential direction, and the notch 303 is adjusted so as to coincide with the lead glass see-through window 201, and lead glass see-through The front side of the window 201 is prevented from being blocked by the fixing / buffer 30.
Next, after engaging the holding collar 102 of the syringe body 10 for injection with the notch 202B of the flange cylinder 202, the flange cap 40 is crowned on the flange cylinder 202, and the locking piece 402 is attached to the flange cylinder. The locking portion 202C of the portion 202 is elastically locked. As a result, the flange cap 40 is attached to the rear end portion of the radiation shield cylinder 20, and the rear end portion of the syringe body 10 for injection is fixedly held on the radiation shield cylinder 20.
At this time, since the syringe body 10 for injection is pressed in the insertion direction into the radiation shield cylinder 20 by the flange cap 40, the insertion destination portion of the support base 301 of the fixing / buffer 30 is shown in FIG. As described above, it is pressed against the step portion 20 </ b> A formed on the inner periphery of the tip portion of the radiation shield cylinder 20, and the outer periphery of the tip portion engages with the inner periphery of the tip portion of the radiation shield cylinder 20. In the state where the flange cap 40 is attached to the rear end portion of the radiation shield cylindrical body 20, the expanded tip end edge of the elastic support portion 302 of the fixing / buffer 30 is located at the front peripheral portion of the syringe body 10 for injection. By abutting, the elastic support portion 302 is compressed in the axial direction, and the edge of the expanded tip portion is the outer diameter of the peripheral portion of the tip portion of the syringe body 10 for injection as shown in FIG. According to the shape, it is elastically deformed in the diameter expansion direction. As a result, as shown in FIG. 6 (B), the expansion destination portion of the elastic support portion 302 is injected through the support base portion 301 that engages with the step portion 20A of the radiation shield cylinder 20 and the inner peripheral wall of the tip portion. The tip of the body 10 is stably supported in a state where it is positioned at the center of the radiation shield cylinder 20.
[0015]
Thus, the tip of the syringe body 10 for injection can be stably held without wobbling by the fixing / buffer 30 on the inner peripheral wall of the radiation shield cylinder 20, and the syringe body 10 for injection and the radiation shield cylinder 20. Even if there are variations in processing such as length and diameter, these variations can be absorbed by the elastic support portion 302 of the fixing / buffer 30, and vibrations during transportation, impacts during dropping, etc. are for the radioactive solution. Even if it joins a syringe, the syringe body 10 for injection can be protected from these vibrations and impacts, and deformation and breakage of the syringe body 10 can be prevented beforehand.
In addition, since the tip portion of the syringe body 10 for injection is stably held by the fixing / buffer 30 on the radiation shield cylinder 20 without wobbling, the administration person such as a doctor holds the radiation shield cylinder 20 in his hand and emits radiation. When injecting a solution into a patient, the introduction and positioning of the injection needle tip at the time of puncture to a drug injection site such as a thin blood vessel of the patient is stabilized, and the drug injection operation is facilitated.
[0016]
Further, the outer diameter of the fixing / buffer 30 (the outer diameter of the tip of the elastic support portion 302) in the present embodiment is slightly smaller than the inner diameter of the radiation shield cylinder 20, and the fixing / buffer 30 is a synthetic resin material. Therefore, when separating the injection syringe body 10 from the radiation shield cylinder 20, the flange cap 40 is removed from the radiation shield cylinder 20 and the pressing force to the fixing / buffer 30 is removed. The fixing / buffer 30 immediately returns to its original shape. Therefore, when the used syringe body 10 is discarded and the radiation shield cylinder 20 is recycled, if the flange cap 40 is removed from the radiation shield cylinder 20 and the radiation shield cylinder 20 is turned upside down, the rubber packing In this way, the syringe body 10 for injection can be automatically separated by its own weight without being adhered and the fixing / buffer 30 that has been restored to its original shape is also easily separated from the radiation shield cylinder 20. Can be discarded. Further, by aligning the notch 303 formed in the fixing / buffer 30 with the front side of the lead glass see-through window 201, the fixing / buffer 30 can secure a field of view on the front side of the lead glass see-through window 201. The remaining amount of the radioactive solution in the syringe body 10 for injection can be visually confirmed through the lead glass transparent window 201 to the end.
[0017]
Incidentally, when the radioactive solution filled in the syringe body 10 for injection is injected into a patient or the like, the insertion end of the plunger rod 105 inserted through the hole 401 of the flange cap 40 is used as a gasket in the syringe body 10 for injection. If the plunger rod 105 is moved in the insertion direction with one of the two cutting needles (not shown) inserted into the packing member 103 and the other of the both cutting needles inserted into the blood vessel of the patient. It becomes possible to inject the radioactive solution in the syringe body 10 for injection.
[0018]
(Embodiment 2)
A second embodiment of the fixing / buffering device according to the present invention will be described with reference to FIGS.
The fixing / buffer tool 50 in the second embodiment is applied to the radiation shield cylinder 20 having a larger diameter than the radiation shield cylinder shown in FIG. The support base 501 is formed thicker than the case of the fixing / buffer 30 so that the inner diameter of the radiation shield cylinder 20 is larger, and the front end of the radiation shield cylinder 20 is formed on the outer periphery of the support base 501. It is formed in the taper surface where a diameter becomes small as it goes to the front part so that it may correspond to taper surface 20B of an inner wall. The rear end of the support base 501 extends from the inner periphery of the support base 501 coaxially in the direction of the tip of the syringe body 10 for injection, and is elastically deformable to engage with the tip edge of the syringe body 10 for injection. A thin horn-like elastic support portion 502 is formed.
Further, a notch 503 is formed in the elastic support portion 502 and the support base portion 501 of the fixing / buffering device 50 facing the front side of the lead glass see-through window 201 of the radiation shield cylindrical body 20 shown in FIG. A slit 504 extending in the axial direction is formed in the base portion 501 (or the elastic support portion 502).
[0019]
When the syringe body 10 for injection is set in the radiation shield cylinder 20 using the thus configured fixing / buffering tool 50, the elastic support portion 502 of the fixing / buffering tool 50 is injected as shown in FIG. The syringe body 10 is elastically deformed in the diameter expansion direction and the compression direction into the outer diameter shape of the outer periphery of the front portion. Thus, the expansion support portion of the elastic support portion 502 is a syringe for injection via the taper surface 20B of the front inner wall of the radiation shield cylinder 20 and the support base portion 501 of the fixing / buffer 50 that engages the front inner peripheral wall. The tip of the body 10 is stably supported in a state where it is positioned at the center of the radiation shield cylinder 20.
Also in the second embodiment, the same effect as that of the first embodiment can be obtained.
[0020]
(Embodiment 3)
A third embodiment of the fixing / buffering device according to the present invention will be described with reference to FIG.
In the third embodiment, the fixing / buffering tool 60 that supports the tip of the syringe body 10 for injection set in the radiation shield cylinder 20 has one end 601 on the inner peripheral surface of the tip of the radiation shield cylinder 20. The synthetic resin bellows 603 is engaged and the other end 602 engages with the peripheral edge of the tip of the syringe body 10 for injection.
Also in the third embodiment, the same effect as that of the first embodiment can be obtained.
[0021]
(Embodiment 4)
Embodiment 4 of the fixing / buffering device according to the present invention will be described with reference to FIG.
In the fourth embodiment, a fixing / buffer 70 that supports the tip of the syringe body 10 for injection set in the radiation shield cylinder 20 is engaged with the peripheral edge of the tip of the syringe body 10 at one end. It is formed from a synthetic resin cylinder 703 having an engagement surface 701 for mating, and an engagement surface 702 for engaging the front inner peripheral surface of the radiation shield cylinder 20 at the other end. By forming a slit 704 extending over the entire length of the cylindrical body 703, the cylindrical body 703 can be elastically deformed in the radial direction.
In Embodiment 4 as described above, substantially the same effect as in Embodiment 1 can be obtained.
[0022]
(Embodiment 5)
Embodiment 5 of the fixing / buffering device according to the present invention will be described with reference to FIG.
In the fifth embodiment, a fixing / buffer 80 that supports the tip of the syringe body 10 for injection set in the radiation shield cylinder 20 is engaged with the peripheral edge of the tip of the syringe body 10 at one end. The cylinder 803 is formed from a synthetic resin cylinder 803 having an engagement surface 801 to be engaged and an engagement surface 802 to be engaged with the inner peripheral surface of the front portion of the radiation shield cylinder 20 at the other end. The cylindrical body 803 can be elastically deformed in the radial direction by forming a plurality of slits 804 extending in the middle of the longitudinal direction from the engagement surfaces 801 and 802 of the cylindrical body 803, separated by a predetermined distance in the circumferential direction. It is.
In the fifth embodiment as well, substantially the same function and effect as in the first embodiment can be obtained.
[0023]
(Embodiment 6)
Embodiment 6 of the fixing / buffering device according to the present invention will be described with reference to FIG.
In the sixth embodiment, a fixing / buffer 90 that supports the tip of the syringe body 10 for injection set in the radiation shield cylinder 20 is engaged with the peripheral edge of the tip of the syringe body 10 at one end. The cylindrical body 903 is formed from a synthetic resin cylinder 903 having an engagement surface 901 for mating, and an engagement surface 902 for engagement with the inner peripheral surface of the tip of the radiation shield cylinder 20 at the other end. The cylindrical body 903 can be elastically deformed in the radial direction by forming a plurality of slits 904 obliquely extending in the circumferential direction from the engaging surfaces 901 and 902 of the cylindrical body 903, separated by a predetermined interval in the circumferential direction. It is.
Also in the sixth embodiment, substantially the same operational effects as in the first embodiment can be obtained.
[0024]
In the first embodiment and the second embodiment, the elastic support portions 302 and 50 of the fixing / buffering devices 30 and 50 are elastically deformed in the direction of expanding the diameter of the front edge portion engaged with the syringe body 10 for injection. However, the present invention is not limited to this. For example, the front edge of the elastic support portions 302 and 502 of the fixing / buffering devices 30 and 50 engaged with the syringe body 10 for injection may be elastically deformed inward in the opposite direction. In the case of elastic deformation outward, when the injection syringe body 10 is pulled out from the radiation shield cylinder 20 after administration, the fixing / buffer device of the present invention remains fitted inside the radiation shield cylinder 20, and the other inside When it is elastically deformed in the direction, it is pulled out from the radiation shield cylinder 20 in a state of being fitted on the outer peripheral surface of the syringe body for injection. Moreover, although the said Embodiment 3-6 demonstrated the case where the notch for preventing the front side of the see-through window 201 made of lead glass from being shielded by the fixing / buffer is described, this Embodiment 3 6 may be formed with notches.
[0025]
【The invention's effect】
As is apparent from the above description, according to the present invention, when the syringe body for injection is set in the radiation shield cylinder and the flange cap is covered, the fixing / buffer is pushed in the insertion direction of the syringe body for injection. Because it compresses and deforms in the axial direction due to pressure and deforms in the radial direction to hold the tip of the syringe body for injection in the radiation shield cylinder, the syringe body for injection is stably and reliably without wobbling the radiation shield cylinder. It can be supported, and even if there are variations in the dimensions of the syringe body for injection and the radiation shield cylinder, these variations can be absorbed by the elastic support part of the fixing and shock absorbers. Even if an impact or the like is applied to the syringe for radioactive solution, the syringe body for injection can be protected from these vibrations and shocks, and deformation and breakage of the syringe body for injection can be prevented.
In addition, since the tip portion of the syringe body for injection is stably held without wobbling by the fixing / buffering device, the introduction positioning of the needle tip portion at the time of puncturing the drug injection site such as a thin blood vessel of the patient is stable, The medicine injection operation can be easily performed.
[0026]
Further, according to the present invention, the tip of the elastic support portion of the fixing / buffering device holds the tip of the syringe body for injection via the support base engaged with the inner peripheral wall of the tip of the radiation shield cylinder. The syringe body can be stably and reliably supported without wobbling on the radiation shield cylinder.
Further, according to the present invention, it is possible to prevent the fixing / buffer from shielding the front side of the lead glass viewing window by aligning the notch of the fixing / buffering device with the front side of the lead glass viewing window. The remaining amount of radioactive solution in the syringe for injection can be visually confirmed through the lead glass transparent window to the end, and the elastic deformation of the support base in the radial direction is facilitated by the slit, and the support base is attached to the inner peripheral wall of the radiation shield cylindrical body. You can fit.
Further, according to the present invention, the injection / syringe body can be easily separated from the radiation shield cylinder after administration by molding the fixation / buffer from a synthetic resin material, and the radiation shield cylinder of the fixation / buffer is provided. There is an effect that it can be easily separated from the body or the syringe body for injection.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing the overall configuration of a radioactive solution syringe equipped with a fixing / buffer device in Embodiment 1 of the present invention.
FIG. 2 is a cross-sectional view of a state in which the radioactive solution syringe equipped with the fixing / buffering device according to the first embodiment of the present invention is assembled.
FIG. 3 is a side view of the fixing / buffering device according to Embodiment 1 of the present invention.
4 is a plan view of FIG. 3;
FIG. 5 is a vertical side view of FIG. 3;
6A and 6B are cross-sectional views showing the relationship between the fixing / buffering device, the radiation shield cylinder, and the syringe body for injection in Embodiment 1 of the present invention.
FIG. 7 is a side view of a fixing / buffering device according to Embodiment 2 of the present invention.
8 is a plan view of FIG. 7. FIG.
9 is a longitudinal side view of FIG. 7. FIG.
FIG. 10 is a cross-sectional view showing a relationship between a fixing / buffer device, a radiation shield cylinder, and an injection syringe body according to Embodiment 2 of the present invention.
FIG. 11 is a perspective view of a fixing / buffer device according to Embodiment 3 of the present invention.
FIG. 12 is a perspective view of a fixing / buffering device according to Embodiment 4 of the present invention.
FIG. 13 is a perspective view of a fixing / buffer device according to a fifth embodiment of the present invention.
FIG. 14 is a perspective view of a fixing / buffering device according to Embodiment 6 of the present invention.
[Explanation of symbols]
10: Syringe body for injection
101: Needle mounting part
103: Packing member
104: Gasket
105: Plunger rod
20: Radiation shield cylinder
201: Lead glass see-through window
30: Fixing and shock absorber
301: Support base
302: Elastic support part
40: Flange cap
50: Fixing / buffer
501: Support base
502: Elastic support
60: fixing / buffer
603: bellows body
70: Fixing / buffer
703: cylinder
704: Slit
80: fixing / buffer
803: cylinder
804: Slit
90: Fixing / buffer
903: Tube
904: Slit

Claims (3)

放射性溶液を封入した注射用シリンジ体の放射線シールド筒体への挿入側先部と該先部に対向する放射線シールド筒体の先部内周面に係合し、前記注射用シリンジ体の挿入方向の押圧力により該挿入方向に圧縮変形するとともに径方向に変形して前記注射用シリンジ体の先部を前記放射線シールド筒体に対して支持する固定・緩衝具であって、当該固定・緩衝具が、前記放射線シールド筒体の先部内周面に係合する短尺筒状で厚肉の支持基部と、前記支持基部の一端から前記注射用シリンジ体の先部方向に同軸に延在し、該注射用シリンジ体の先部周縁部に係合する弾性変形可能な短尺筒状で薄肉の弾性支持部とから構成されていると共に、放射線シールド筒体の鉛ガラス製透視窓と対向する前記弾性支持部及び支持基部に切欠きが形成され、かつ前記弾性支持部及び支持基部の少なくとも一方に軸線方向に伸びるスリットが形成されていることを特徴とする固定・緩衝具。The injection syringe body enclosing the radioactive solution is engaged with the insertion side front part of the radiation shield cylinder and the front inner peripheral surface of the radiation shield cylinder opposite to the front part, and the injection syringe body is inserted in the insertion direction. A fixing / buffering device that compresses and deforms in the insertion direction by a pressing force and deforms in the radial direction to support the tip portion of the syringe body for injection with respect to the radiation shield cylinder, A short cylindrical and thick support base that engages with the inner peripheral surface of the distal end of the radiation shield cylindrical body, and extends coaxially from one end of the support base toward the distal end of the syringe body for injection. The elastic support portion is formed of an elastically deformable short cylindrical thin-walled elastic support portion that engages with the peripheral edge of the tip portion of the syringe body, and is opposed to the lead glass see-through window of the radiation shield cylindrical body And a notch is formed in the support base. And fixed-bumper, characterized in that the slits extending in the axial direction in at least one of the elastic supporting portion and the support base is formed. 固定・緩衝具が、蛇腹体から構成されるものである請求項1記載の固定・緩衝具。The fixing / buffering device according to claim 1 , wherein the fixing / buffering device comprises a bellows body. 固定・緩衝具が、一端に前記放射用シリンジ体の先部周縁部に係合する係合面を有し、他端に前記放射線シールド筒体の先部内周面に係合する係合面を有する筒体から成形され、この筒体に該筒体を径方向及び軸方向の少なくとも一方に弾性変形させるための1つ以上のスリットを形成したことを特徴とする請求項1又は2記載の固定・緩衝具。The fixing / buffering device has an engagement surface that engages with the front peripheral edge of the radiation syringe body at one end, and an engagement surface that engages with the front inner peripheral surface of the radiation shield cylinder at the other end. 3. The fixing according to claim 1 , wherein the cylindrical body is formed with one or more slits for elastically deforming the cylindrical body in at least one of a radial direction and an axial direction. -Shock absorber.
JP08675097A 1997-04-04 1997-04-04 Fixing and cushioning Expired - Fee Related JP3875346B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP08675097A JP3875346B2 (en) 1997-04-04 1997-04-04 Fixing and cushioning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP08675097A JP3875346B2 (en) 1997-04-04 1997-04-04 Fixing and cushioning

Publications (2)

Publication Number Publication Date
JPH10277152A JPH10277152A (en) 1998-10-20
JP3875346B2 true JP3875346B2 (en) 2007-01-31

Family

ID=13895454

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
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Publication number Priority date Publication date Assignee Title
JP4818292B2 (en) * 2001-03-09 2011-11-16 バイエル ファーマ アクチエンゲゼルシャフト Radioactive syringe assembly
JP4905763B2 (en) * 2005-11-04 2012-03-28 味の素株式会社 Syringe damage prevention cap
EP2442856B1 (en) * 2009-06-17 2024-02-07 SHL Medical AG Medicament container holder arrangement
FR3043563B1 (en) * 2015-11-13 2022-01-21 Aptar France Sas AUTOINJECTOR.
KR102610512B1 (en) * 2021-12-16 2023-12-07 (의) 삼성의료재단 Disposable radioactive isotope syringe cover and assembly method thereof

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