Syringe assembly having a telescoping plunger rod
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United States of America Patent
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Sep 27, 2022
Grant Date -
Mar 21, 2019
app pub date -
Nov 15, 2018
filing date -
Sep 30, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A syringe assembly including a syringe barrel having a first end, a second end, and a sidewall extending therebetween defining a chamber is disclosed. The syringe assembly includes a stopper disposed within the chamber of the syringe barrel and a plunger rod having an inner member engaged with the stopper and an outer member adapted for telescopic movement with respect to the inner member. The plunger rod is transitionable from a collapsed position, in which a portion of the inner member is nested within the outer member, to an extended position, in which the same portion of the inner member extends outside the outer member. The syringe assembly also includes a stop member configured for cooperation with a portion of the syringe barrel, upon relative movement of the outer member with respect to the inner member, to limit the outward travel of the plunger rod from the syringe barrel.
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