发明名称 |
One-use retracting syringe with positive needle retention |
摘要 |
A retracting syringe of one use has a plunger comprising a handle portion and a needle retention portion forward of the handle portion. A positive locking structure in the syringe barrel ensures the syringe is not reused. In one embodiment, the positive locking structure is a stop in the syringe barrel. The handle portion separates after one use and is removed from the syringe. In a second embodiment, the handle portion has a plurality of stepped serrations and the positive locking structure is a clip which is movable with respect to both the handle portion and the barrel. In a third embodiment, the positive locking structure is a clip fixed in an enlarged back opening of the barrel with springing points which are protected from a plurality of stepped serrations on the handle portion by a sliding collar. This one use feature can be applied to a nonretracting syringe.
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申请公布号 |
US6494863(B1) |
申请公布日期 |
2002.12.17 |
申请号 |
US20010978906 |
申请日期 |
2001.10.15 |
申请人 |
RETRACTABLE TECHNOLOGIES, INC. |
发明人 |
SHAW THOMAS J.;ZHU JUDY |
分类号 |
A61M5/32;A61M5/00;A61M5/158;A61M5/50;(IPC1-7):A61M5/00 |
主分类号 |
A61M5/32 |
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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