Stephen E Ewing

US Patent:

20100034705, Feb 11, 2010

Filed:

Aug 8, 2008

Appl. No.:

12/228002

Inventors:

Jason B. Mundt - Sparks NV, US
Stephen E. Ewing - Reno NV, US

International Classification:

B01L 3/02

US Classification:

422100, 422103

Abstract:

A negative dead volume syringe comprising a body defining a chamber, a syringe tip disposed at a distal end of the chamber and having a tip passageway therethrough in open communication with the chamber, a rod extending from a first end within the chamber to a second end coupleable to a motor to produce bidirectional motion of the rod, and a plunger tip having a proximal portion coupled to the first end of the rod, a medial portion distally extending from said proximal portion and shaped to complement the tip passageway, and a tip extension distally extending from said medial portion and shaped to be received within a dead volume defined by a passageway of a valve coupleable to the syringe tip wherein the plunger tip ensures evacuation of fluid and air from the chamber, syringe tip, and dead volume of the valve upon distal displacement of the rod.