Needle unit
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United States of America Patent
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-
N/A
Issued Date -
Nov 24, 2005
app pub date -
Mar 22, 2005
filing date -
Sep 25, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A syringe comprising a barrel (10), a plunger (11) and a needle unit (12). The needle unit (12) has a needle (30) which is biased inwardly of the barrel (10) but whose inward movement is blocked by a stop element (34). The needle (30) is released from the stop element (34) in response to the plunger (11) reaching the final part of, or the conclusion of, its delivery stroke to allow retraction of the needle (30). The barrel (10) of the syringe is provided with a seal (38) which contacts an outer peripheral surface of the stop element (34).
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