A - Human Necessities
61
M
83/10
A61M 3/00 (2006.01) A61M 5/31 (2006.01) A61M 5/315 (2006.01) A61M 5/32 (2006.01) A61M 5/34 (2006.01)
Patent
CA 1283307
Abstract: The present invention relates to a syringe having a barrel fitted with a plunger and a nozzle. The barrel is comprised of a hollow cylindrical portion and a tubular portion which is narrower than the cylindrical portion and which is connected at one end to one end of the cylindrical portion. The other end of the cylindrical portion is an open end. At 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. As a result, air present between the end of the plunger and the top surface of a drug in the barrel can vent through the enlarged diameter part when the plunger is pushed into the barrel.
536015
Hasegawa Kenji
Iida Seiichi
Kita Seiji
Kubo Seiichiro
Matsui Kyoji
Kirby Eades Gale Baker
Sunstar Kabushiki Kaisha
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