Abstract: The present invention provides a syringe including a tubular barrel. The tubular barrel has an open proximal end, a distal end with a fluid expelling passage defined therein, and a barrel chamber. A seal is disposed within the barrel chamber a predetermined distance away from the open proximal end in fluid-tight and axially-sliding engagement with the barrel chamber, so that fluid held in the barrel chamber between the fluid expelling passage and the seal can be expelled from the barrel chamber to the outside via the fluid expelling passage by sliding the seal towards the fluid expelling passage.
Type:
Grant
Filed:
July 12, 2000
Date of Patent:
July 30, 2002
Assignees:
Maeda Sangyo Co., Ltd., Taisei Kako Co., Ltd.
Abstract: The present invention provides a syringe including a tubular barrel. The tubular barrel has an open proximal end, a distal end with a fluid expelling passage defined therein, and a barrel chamber. A seal is disposed within the barrel chamber a predetermined distance away from the open proximal end in fluid-tight and axially-sliding engagement with the barrel chamber, so that fluid held in the barrel chamber between the fluid expelling passage and the seal can be expelled from the barrel chamber to the outside via the fluid expelling passage by sliding the seal towards the fluid expelling passage.
Type:
Grant
Filed:
April 22, 1999
Date of Patent:
December 19, 2000
Assignees:
Maeda Sangyo Co., Ltd., Taisei Kako Co., Ltd.