JP6882597B2 - 捻られた圧縮ばねと複数の部分を含む環状部材とが一体化された受動式注射針安全システム - Google Patents
捻られた圧縮ばねと複数の部分を含む環状部材とが一体化された受動式注射針安全システム Download PDFInfo
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Description
Claims (20)
- 注射器用の針安全システムであって、
注射器の針の一部を囲むように構成されたスリーブと、
前記スリーブの中に形成された案内路と、
前記スリーブの中に配置された環状部材と、
ばねと
を備え、
前記環状部材は、
注射器のハブに固定されるように構成された内側環状部材と、
前記内側環状部材に回転可能に取り付けられた外側環状部材と、
前記外側環状部材から径方向において外側へ伸びている少なくとも1本の案内ピンと
を含み、
前記内側環状部材は、全体を通して中空である実質的に筒状の基体を含み、
前記外側環状部材は一体構造であり、径方向において伸縮可能な少なくとも1つのアコーディオン領域を含み、前記外側環状部材は更に中空部に、径方向において内側へ広がっている環を含み、
前記案内ピンは、前記案内路の中を摺動するように構成されており、
前記案内路は、第1留め部を始端とする第1部分と、前記第1部分に隣接しており、第2留め部を終端とする第2部分とを含み、
前記内側環状部材が前記注射器のハブに取り付けられ、前記案内ピンが前記第1留め部に配置されたとき、前記針安全システムは注入前の位置にあり、
前記案内ピンが前記第1留め部から出て前記案内路の第1部分の先端へ移動したとき、前記針安全システムは、前記注射器の針を露出させる全入位置にあり、
前記案内ピンが前記案内路の第2部分に沿って前記第2留め部へ移動したとき、前記針安全システムは、前記注射器の針の全体がスリーブに囲まれる位置にあり、
前記ばねは前記外側環状部材と前記スリーブとの間を伸びており、前記スリーブに先端方向へ力を加え、
前記ばねの力により、前記案内ピンが前記案内路の第2部分に沿って前記第2留め部へ移動するように、前記スリーブの軸方向に対して傾いた部分を前記案内路の第2部分が含み、
前記案内ピンが前記第2留め部へ移動したとき、前記ばねの力により、前記案内ピンが前記第2留め部の中にロックされ、
前記内側環状部材には、前記外側環状部材の環を中に入れて回転自在に保持するように構成された円形通路が区画されている
ことを特徴とする針安全システム。 - 前記内側環状部材は、
前記基体の先端に位置し、径方向において外側に広がっており、先端方向に向いている環状面と、
径方向においては揃っており、周方向においては間隔を空けており、前記環状面から先端方向へ突出している複数の柔らかい屈曲可能な部材と、
径方向においては揃っており、周方向においては間隔を空けており、基端方向へ突出している複数の脚と
を有し、
前記複数の屈曲可能な部材はそれぞれ、注射器のハブの先端を前記内側環状部材の中空部に通すことが可能であるように、かつ、径方向において内側に向かう力を、径方向において外側に向いている前記注射器のハブの先端面に加えることによって、前記内側環状部材を前記先端面に固定するように構成されており、
前記内側環状部材が前記注射器のハブに固定された場合、前記複数の屈曲可能な部材はそれぞれの先端が、前記注射器のハブの先端に位置する基端方向に向いている環状の肩に隣接し、前記複数の脚はそれぞれの基端が前記注射器のシリンダの肩に隣接する、
請求項1に記載の針安全システム。 - 前記複数の脚の間には少なくとも1つの切れ込みが設けられており、注射器のシリンダの中身を見ることができる、請求項2に記載の針安全システム。
- 前記複数の屈曲可能な部材はそれぞれの先端の径方向において内側に向いている面が、径方向において外側に向いている注射器のハブの先端面に対応して先細りになっている、請求項3に記載の針安全システム。
- 前記外側環状部材の中空部には、径方向において内側へ広がっている環があり、
前記複数の屈曲可能な部材のそれぞれの先端に形成された通路が集まって1つの円形通路を、径方向において外側に向いている前記内側環状部材の面に形成しており、
前記円形通路の中には前記外側環状部材の環が入って、回転自在に保持されている、
請求項2に記載の針安全システム。 - 前記外側環状部材は、その中空部に前記複数の屈曲可能な部材を通すのに、前記円形通路に前記外側環状部材の環を入れるのに、かつ、前記内側環状部材に対して1自由度にのみ回転自在である元の形へ戻るのに、十分な柔らかさ、および寸法を持つ、請求項5に記載の針安全システム。
- 前記ばねの先端には、前記スリーブの先端に位置する受け部に配置された、先端方向へ伸びている脚があり、前記ばねの基端には、前記外側環状部材に位置する受け部に配置された、基端方向へ伸びている脚がある、請求項1に記載の針安全システム。
- 前記内側環状部材の基体の先端には環状面が形成されており、前記環状面は、径方向において外側へ広がって、先端方向に向いており、
前記内側環状部材は複数の屈曲可能な部材を含み、前記複数の屈曲可能な部材は前記環状面から先端方向へ突出しており、径方向においては揃っており、周方向においては間隔を空けており、
前記複数の屈曲可能な部材はそれぞれが、注射器のハブの先端を前記内側環状部材の中空部に通すのに、かつ、径方向において外側に向いている注射器のハブの先端面に対して前記複数の屈曲可能な部材のそれぞれが加える径方向において内側に向いている力により、前記内側環状部材を径方向において外側に向いている注射器のハブの先端面に固定するのに十分な柔らかさを持ち、
前記複数の屈曲可能な部材それぞれの先端が集まって前記円形通路を形成している、
請求項1に記載の針安全システム。 - 前記少なくとも1本の案内ピンは、
前記外側環状部材から径方向において外側へ伸びており、前記外側環状部材と一体に形成されている第1案内ピン
を含み、
前記第1案内ピンは、前記スリーブの中に形成された第1案内路の中を摺動するように構成されており、
前記第1案内ピンは径方向へ、前記スリーブの基端の開口部の内径を超えて伸びている、
請求項1に記載の針安全システム。 - 前記少なくとも1本の案内ピンは、
前記外側環状部材から径方向において外側へ、前記スリーブの基端の開口部の内径を超えて伸びており、前記外側環状部材と一体に形成されている第2案内ピン
を含み、
前記第2案内ピンは、前記スリーブの中に形成された第2案内路と摺動可能に結合している、
請求項9に記載の針安全システム。 - 前記第1案内ピンが径方向において内側へ、前記スリーブの基端の開口部の内径を超えては伸びない位置まで移動する程度に、前記アコーディオン領域が径方向において圧縮可能である、請求項9に記載の針安全システム。
- 前記アコーディオン領域が径方向において伸長可能であるので、注射器のハブの先端が前記内側環状部材の中空部を通ることができる一方、前記外側環状部材が前記内側環状部材に回転可能に取り付けられる、請求項8に記載の針安全システム。
- 前記少なくとも1本の案内ピンは、
前記外側環状部材から径方向において外側へ伸びている、前記外側環状部材と一体に形成された第1案内ピン
を含み、
前記第1案内ピンは、前記スリーブの中に形成された第1案内路と摺動可能に結合しており、
前記第1案内ピンは径方向へ、前記スリーブの基端の開口部の内径を超えて伸びている、
請求項12に記載の針安全システム。 - 前記少なくとも1本の案内ピンは、
前記外側環状部材から径方向において外側へ、前記スリーブの基端の開口部の内径を超えて伸びている、前記外側環状部材と一体に形成された第2案内ピン
を含み、
前記第2案内ピンは、前記スリーブの中に形成された第2案内路と摺動可能に結合している、
請求項13に記載の針安全システム。 - 前記第1案内ピンが径方向において内側へ、前記スリーブの基端の開口部の内径を超えては伸びない位置まで移動する程度に、前記アコーディオン領域が径方向において圧縮可能である、請求項13に記載の針安全システム。
- 請求項1に記載の針安全システムを組み立てる方法であって、
前記外側環状部材を前記スリーブの中に挿入して、前記外側環状部材を前記スリーブに取り付けるステップと、
前記内側環状部材を前記外側環状部材の中に挿入するステップと、
前記内側環状部材を前記注射器のハブの先端に挿入して固定するステップと
を備え、
前記内側環状部材を前記外側環状部材の中に挿入するステップにより、前記円形通路はその中に前記外側環状部材の環を回転自在に保持するようになり、
前記内側環状部材を前記注射器のハブの先端に挿入して固定するステップでは、前記内側環状部材の前記円形通路の中に前記外側環状部材の環が保持されている
ことを特徴とする方法。 - 前記外側環状部材を前記スリーブに取り付けるステップは、
前記アコーディオン領域を径方向において圧縮して、前記案内ピンを前記案内路の中に挿入するステップ
を含み、
前記案内ピンは前記外側環状部材から径方向において外側へ伸びており、前記外側環状部材と一体に形成され、
前記アコーディオン領域が圧縮される前は、前記案内ピンが径方向へ、前記スリーブの基端の開口部の内径を超えて伸びている、
請求項16に記載の方法。 - 前記内側環状部材の基体の先端には環状面が形成されており、前記環状面は、径方向において外側へ広がって、先端方向に向いており、
前記内側環状部材は、前記環状面から先端方向へ突出している複数の屈曲可能な部材を含み、
前記複数の屈曲可能な部材は、径方向においては揃っており、周方向においては間隔を空けており、
前記内側環状部材を注射器のハブの先端に挿入して固定するステップは、前記内側環状部材が、前記外側環状部材の径方向において内側へ広がっている環を中に保持している状態で、注射器のハブの先端に挿入される間に、前記アコーディオン領域と前記屈曲可能な部材とを共に径方向において伸長させるステップを含む、
請求項16に記載の方法。 - 請求項1に記載の針安全システムと注射器とを備えた注射器構造体。
- 請求項19に記載の注射器構造体に中身を詰める方法であって、
トレイの中に保持された注射器に、注入可能な薬剤を詰めるステップと、
棒を含むプランジャーを前記注射器の中に挿入するステップと
を備えた方法。
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