JP7110295B2 - 無駄の少ない注射器及び針集合体 - Google Patents
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Description
Claims (32)
- 無駄の少ない注射器であって、
中空体であって、内径、内壁、及び前記中空体の前方端で前記中空体を閉鎖する端壁を有するとともに、開放された後端を有してチャンバを画定する中空体と、
前記中空体の端壁に取り付けられた注射器先端部と、
針組立体と
を含み、
前記注射器先端部は、長手方向軸に沿って前記注射器の前記中空体から離れるように延びる周方向壁を有し、
前記周方向壁の内部表面が、前記注射器先端部の第1端と第2端との間に延びる実質的に円錐台状の形状を有する内部空洞を画定し、
前記中空体の端壁には、前記内部空洞を前記中空体のチャンバとの密閉流体連通状態とする開口が画定され、
前記注射器先端部の第1端は前記中空体の端壁に結合されるように構成され、
前記注射器先端部の第2端は、前記端壁から所定距離に位置決めされ、
前記注射器先端部の第1端は、第1直径を有する開口部を画定し、
前記注射器先端部の第2端は、前記第1直径よりも大きな第2直径を有する開口部を画定し、
前記注射器先端部の第2端はさらに、前記注射器先端部の第2端から径方向に離れるように突出するべく構成された少なくとも一つのフランジを含み、
前記針組立体は、細長い針と、前記注射器先端部の前記少なくとも一つのフランジに選択的に嵌合するべく構成された針ハブとを含み、
前記針ハブは針基部及び円錐台状部材を含み、
前記円錐台状部材は、前記針基部の端壁に結合された遠位端と、前記針基部の端壁から所定距離だけ長手方向外方に延びる近位端とを有し、
前記針ハブの針基部は、前記注射器先端部の前記少なくとも一つのフランジに係合するべく構成された少なくとも一つのねじを有するとともに、前記針基部の端壁及び前記円錐台状部材を貫通する中心ボアを画定し、
前記細長い針は前記中心ボアに位置決めされ、
前記針基部のねじと前記少なくとも一つのフランジとの動作による係合を介して前記針ハブを前記注射器先端部に係合するときに、前記針ハブの円錐台状部材の外側表面が、前記注射器先端部の内側表面と前記中空体の開口の少なくとも一部分とに摺動的に係合するべく構成される結果、前記針ハブの円錐台状部材が前記注射器先端部の内部空洞に取り付けられて流体密封シールを形成し、前記無駄の少ない注射器における死空間を最小限にする、無駄の少ない注射器。 - 前記注射器の中空体は、7.0cm未満の長さを有する、請求項1の無駄の少ない注射器。
- 前記注射器の中空体は、10.0cm超過の長さを有する、請求項1の無駄の少ない注射器。
- 前記注射器の中空体は、7.0cm~10.0cmの長さを有する、請求項1の無駄の少ない注射器。
- 前記注射器の中空体の外径が0.25cm未満である、請求項1の無駄の少ない注射器。
- 前記注射器の中空体の外径が2.0cm超過である、請求項1の無駄の少ない注射器。
- 前記注射器の中空体の外径が0.25cm~2.0cmである、請求項1の無駄の少ない注射器。
- 前記注射器の中空体の外径が実質的に一定である、請求項1の無駄の少ない注射器。
- 前記注射器の中空体の内径が前記中空体のチャンバの容積容量を変化させる、請求項1の無駄の少ない注射器。
- 前記チャンバに包含された流体の量を示すために前記中空体の外壁に位置付けられた複数の長手方向に延びるハッシュマークをさらに含む、請求項1の無駄の少ない注射器。
- 前記ハッシュマークは前記注射器のチャンバに包含される流体の濃度を示す、請求項10の無駄の少ない注射器。
- 前記ハッシュマークは希釈剤の容積当たりの薬剤の容積を示す、請求項10の無駄の少ない注射器。
- 前記ハッシュマークは希釈剤の容積当たりの薬剤の相対単位を示す、請求項10の無駄の少ない注射器。
- 前記ハッシュマークは希釈剤の容積当たりの神経毒の相対単位を示す、請求項10の無駄の少ない注射器。
- 前記針組立体は、少なくとも一つの交換可能な針組立体を含む、請求項1の無駄の少ない注射器。
- 前記注射器先端部は実質的に円柱状の外表面形状を有する、請求項1の無駄の少ない注射器。
- 流体を選択的に包含するべく構成されるチャンバを画定するように前記中空体の内壁と往復密閉係合するピストンキャップを有するピストン手段をさらに含む、請求項1の無駄の少ない注射器。
- 前記ピストン手段はさらに、前記ピストンキャップに結合されたプランジャを含む、請求項17の無駄の少ない注射器。
- 前記ピストンキャップの遠位端は、前記注射器の中空体の端壁に相補的に係合するべく構成される、請求項18の無駄の少ない注射器。
- 前記ピストンキャップの遠位端は、前記ピストンキャップの遠位端が前記端壁に接触する押し込み位置において、前記ピストンキャップの端壁と遠位端との間に実質的にいかなる隙間も形成されないようなサイズ及び形状とされる、請求項19の無駄の少ない注射器。
- 前記針基部は円柱状の中空形状を有し、前記円錐台状部材は、前記針ハブの針基部に形成される、請求項1の無駄の少ない注射器。
- 前記針ハブの円錐台状部材の近位端が、前記針基部を超えて長手方向外方に延びる、請求項1の無駄の少ない注射器。
- 前記チャンバには事前に薬剤が充填される、請求項1の無駄の少ない注射器。
- 前記針基部のねじと前記少なくとも一つのフランジとの動作による係合を介して前記針ハブを前記注射器先端部に係合するときに、前記針ハブの円錐台状部材の外側表面が、前記注射器先端部の内側表面と摺動的に係合するべく構成される結果、前記円錐台状部材の近位端が前記中空体の開口に近接して位置決めされて前記針ハブの円錐台状部材の外側表面と前記注射器の内側表面とが流体密封シールを形成し、前記無駄の少ない注射器における死空間を最小限にする、請求項1の無駄の少ない注射器。
- 前記細長い針が前記中心ボアに位置決めされる結果、前記針の近位端が、前記円錐台状部材の近位端に近接して取り付けられる、請求項1の無駄の少ない注射器。
- 無駄の少ない注射器であって、
中空体であって、内径、内壁、及び前記中空体の前方端で前記中空体を閉鎖する端壁を有するとともに、開放された後端を有してチャンバを画定する中空体と、
前記中空体の端壁に取り付けられた注射器先端部と、
針組立体と
を含み、
前記注射器先端部は、長手方向軸に沿って前記注射器の前記中空体から離れるように延びる周方向壁を有し、
前記周方向壁の内部表面が、前記注射器先端部の第1端と第2端との間に延びる実質的に円錐台状の形状を有する内部空洞を画定し、
前記中空体の端壁には、前記注射器先端部の内部空洞を前記中空体のチャンバとの密閉流体連通状態とする開口が画定され、
前記注射器先端部の第1端は、第1直径を有する開口部を画定し、
前記注射器先端部の第2端は、前記第1直径よりも大きな第2直径を有する開口部を画定し、
前記注射器先端部の中に画定された内部表面が、前記注射器先端部の第1端と第2端との間に延びる実質的に円錐台形状の空洞を画定し、
前記注射器先端部の第2端はさらに、対向するように位置決めされた一対のフランジであって、各フランジが前記注射器先端部の第2端から径方向に離れるように突出するべく構成された一対のフランジを含み、
前記針組立体は、細長い針と、前記注射器先端部の前記一対のフランジに選択的に嵌合するべく構成された針ハブとを含み、前記針ハブは針基部及び円錐台状部材を含み、前記円錐台状部材は、前記針基部の端壁に結合された遠位端と、前記針基部の端壁から所定距離だけ長手方向外方に延びる近位端とを有し、
前記針ハブの針基部は、前記注射器先端部の前記一対のフランジに係合するべく構成された少なくとも一つのねじを有するとともに、前記針基部の端壁及び前記円錐台状部材を貫通する中心ボアを画定し、
前記細長い針が前記中心ボアの中に位置決めされ、
前記針基部のねじと前記一対のフランジとの動作による係合を介して前記針ハブを前記注射器先端部に係合するときに、前記針ハブの円錐台状部材の外側表面全体が、前記注射器先端部の内側表面と前記中空体の開口とに摺動的に係合するべく構成される結果、前記針ハブの円錐台状部材が前記注射器先端部の内部空洞と前記中空体の開口の少なくとも一部分とを埋めて流体密封シールを形成し、前記無駄の少ない注射器における死空間を最小限にする、無駄の少ない注射器。 - 流体を選択的に包含するべく構成されるチャンバを画定するように前記中空体の内壁と往復密閉係合するピストンキャップを有するピストン手段をさらに含む、請求項26の無駄の少ない注射器。
- 前記ピストン手段はさらに、前記ピストンキャップに結合されたプランジャを含む、請求項27の無駄の少ない注射器。
- 前記ピストンキャップの遠位端は、前記注射器の中空体の端壁に相補的に係合するべく構成される、請求項28の無駄の少ない注射器。
- 前記ピストンキャップの遠位端は、前記ピストンキャップの遠位端が前記端壁に接触する押し込み位置において、前記ピストンキャップの端壁と遠位端との間に実質的にいかなる隙間も形成されないようなサイズ及び形状とされる、請求項29の無駄の少ない注射器。
- 前記注射器先端部の第1端は前記中空体の端壁に結合されるように構成され、
前記注射器先端部の第2端は、前記端壁から所定距離に位置決めされる、請求項26の無駄の少ない注射器。 - 前記細長い針が前記中心ボアに位置決めされる結果、前記針の近位端が、前記円錐台状部材の近位端に実質的に整列して取り付けられる、請求項26の無駄の少ない注射器。
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NL2021294B1 (en) | 2018-07-12 | 2020-01-20 | Sjj Solutions B V | Needle hub and syringe arrangement |
DE202018105835U1 (de) * | 2018-10-11 | 2018-11-09 | Schott Schweiz Ag | Spritzenkörper |
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FR3100457B1 (fr) | 2019-09-05 | 2021-09-17 | Maison Hendricks | seringue destinée à injecter un liquide additionnel dans un robinet multivoies |
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