Syringe needle isolation device

Details Syringe needle isolation device Syringe needle isolation device

1997-03-20

1999-04-13

Buiz, Michael Powell

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604232, 604236, A61M 550

Patent

active

058938427

ABSTRACT:
A syringe assembly having needle isolation features includes an elongate barrel having an open proximal end, a chamber for retaining fluid and a tip portion extending from a distal end of the barrel having a passageway therethrough include communication with the chamber. A valve housing extends outwardly from the tip portion of the barrel having a conduit therethrough in communication with the passageway. A needle cannula having a proximal end, a distal end and a lumen therethrough is provided. The proximal end of the needle is connected to the housing so that the lumen is in fluid communication with the conduit. The housing includes internal valve for allowing liquid under pressure in the chamber to flow distally through the conduit and the lumen while preventing unpressurized liquid in the chamber from flowing through the aperture. The internal valve includes a one-way valve structure for preventing liquid flow through the conduit in a proximal direction toward the chamber.

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English language abstract for FR 2 639544A1.

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