Syringe for infusion
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Sep 26, 2000
Issued Date -
N/A
app pub date -
Aug 25, 1997
filing date -
May 17, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A syringe is modified to permit gradual administration of its contents with reduced problems due to seizing or stiction of its piston by dividing its piston axially into two parts, a front detached part and rear part which is the only part having provision for attachment to a syringe actuator. The rear part has a passage through which fluid can be gradually introduced from an actuator into a chamber between the parts so as to force the front part forward while the rear part is restrained against rearward movement. The passage may be initially closed by a septum which is penetrated by a cannula on the actuator. If the syringe actuator is a plunger, the syringe can be used conventionally.
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