发明名称 |
APPARATUS AND METHODS FOR FLUID PRESSURIZING UNITS OF INJECTION SYSTEMS |
摘要 |
An injection system includes a syringe and a plunger. A wiper sidewall of the plunger defines a cavity, into which a plunger shaft of the system is inserted, for moving the plunger, within the syringe, for fluid injection. The plunger includes a feature for engaging the shaft, and the sidewall preferably includes an expandable-contractible portion, in which the feature is formed. When the plunger is initially mounted within a first length of the syringe, the expandable-contractible portion of the sidewall is expanded and the feature of the plunger does not operably engage the inserted shaft. When the shaft moves the plunger into a second length of the syringe, the expandable-contractible portion of the sidewall contracts and the feature operably engages the shaft. An optional deformable end wall of the plunger may be spaced apart from a distal terminal end of the inserted shaft. |
申请公布号 |
CA2744693(A1) |
申请公布日期 |
2010.06.03 |
申请号 |
CA20092744693 |
申请日期 |
2009.11.16 |
申请人 |
ACIST MEDICAL SYSTEMS, INC. |
发明人 |
HIEB, MARTIN G.;HAJICEK, DAVID J.;NYSTROM, SIDNEY D. |
分类号 |
A61M5/145;A61M5/00;A61M5/315;A61M5/50 |
主分类号 |
A61M5/145 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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