公开(公告)号：US4795444A

公开(公告)日：1989-01-03

申请号：US41488

申请日：1987-04-23

申请人： Kenji Hasegawa ,  Kyaji Matsui ,  Seiji Kita ,  Seiichiro Kubo ,  Seiichi Iida

发明人： Kenji Hasegawa ,  Kyaji Matsui ,  Seiji Kita ,  Seiichiro Kubo ,  Seiichi Iida

IPC分类号： A61C5/04 ,  A61M3/00 ,  A61M5/178 ,  A61M5/31 ,  A61M5/315 ,  A61M5/32 ,  A61M5/34

CPC分类号： A61M3/00 ,  A61M5/3129 ,  A61M2005/3123 ,  A61M2005/341 ,  A61M5/31511 ,  A61M5/32 ,  A61M5/3286

摘要： A syringe having a barrel fitted with a plunger and a nozzle in which the barrel comprisesa hollow cylindrical portion and a tubular portion which is thinner than the cylindrical portion and connected to one end of the cylindrical portion,the other end of said cylindrical portion is an open end, andat least a part of the cylindrical portion adjacent to the open end has a diameter larger than that of one end of the plunger to be inserted in the barrel so that air present between the end of the plunger and the top surface of a medicament in the barrel can vent through the enlarged diameter part when the plunger is pushed into the barrel.