VALVE SYRINGE

WIPO Patent Application WO2004093709

A3

Valve syringes of the invention include a syringe barrel (12) and an applicator valve (30) adapted to rotate relative to the barrel (12) between closed and open positions. In the open position, one or more slots in the applicator valve (30) align with one or more holes (34) in a discharge end of the syringe barrel (12) in order to allow fluid material to flow therethrough. In a closed position, the contact surface of the applicator valve (30) occludes the holes (34) in the barrel in order to seal them and prevent flow of fluid material therethrough. The valve syringe may include structure that increases the sealing engagement between the syringe barrel (12) and applicator valve (30) when rotated toward at least one of the open or closed positions. The applicator valve (30) may include an applicator tip that is either integrally or detachably connected to the applicator valve (30). The valve syringe may also include a plunger (20) adapted to expel fluid material contained in the syringe barrel (20) through the discharge end and into the applicator valve (30).

JP4182692	Syringe type drug capsule
WO/2003/028871	MIXING CAPSULE AND METHOD FOR ACTIVATING THE SAME
WO/2005/104981	DENTAL INJECTION DEVICE

BILLS DAN J
FISCHER DAN E
MCLEAN BRUCE S

PCT/US2004/008409

June 09, 2005

March 19, 2004

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ULTRADENT PRODUCTS INC (US)

A61C5/06; A61C5/62; A61M5/31; A61M5/315; A61M5/50; (IPC1-7): A61M5/315

US4846801A	1989-07-11
US5989219A	1999-11-23
US5814017A	1998-09-29
US5135511A	1992-08-04
US5951160A	1999-09-14

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