AUTOMATIC INJECTION DEVICE

PROBLEM TO BE SOLVED: To provide a syringe plunger formed of a polymeric material.SOLUTION: A syringe plunger includes: a pressurizer 754 disposed at a proximal end; and a distal end bifurcated into a first plunger arm 788a' having a first conical surface and a second conical surface, and a sec...

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Bibliographische Detailangaben
Hauptverfasser:	SHERWIN S SHANG, MARC M PLEW, ESRA OZDARYAL, WILLIAM P SZECHINSKI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a syringe plunger formed of a polymeric material.SOLUTION: A syringe plunger includes: a pressurizer 754 disposed at a proximal end; and a distal end bifurcated into a first plunger arm 788a' having a first conical surface and a second conical surface, and a second plunger arm 788b' having a first conical surface and a second conical surface. The distal end includes a first contact surface defined by the first conical surface of the first plunger arm and the first conical surface of the second plunger arm, the first contact surface configured to initially contact a firing engagement mechanism, the first contact surface disposed at a first angle of between about 40° and about 80° relative to a longitudinal axis of the syringe plunger. 【課題】高分子材料から形成されるシリンジプランジャを提供する。【解決手段】シリンジプランジャは、近位端に配置される加圧器７５４と、第１の円錐面および第２の円錐面を有する第１のプランジャアーム７８８ａ'、ならびに第１の円錐面および第２の円錐面を有する第２のプランジャアーム７８８ｂ'に二またに分けられる遠位端とを含む。遠位端は、最初に始動係合機構と接触するように構成され、シリンジプランジャの縦軸に対して約４０?から約８０?までの間の第１の角度で配置される、第１のプランジャアームの第１の円錐面および第２のプランジャアームの第１の円錐面により規定される第１の接触面を含む。【選択図】図８