Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Reexamination Certificate
2007-09-11
2007-09-11
DeSanto, Matthew (Department: 3763)
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
C604S221000, C604S232000
Reexamination Certificate
active
10421588
ABSTRACT:
A syringe or cartridge having a hollow barrel with an open end and a second end suitable for attaching a needle assembly. A master plunger assembly that includes a master plunger and a plunger member is mounted in the barrel for longitudinal movement therein. A slave plunger is mounted in the barrel for longitudinal movement therein, and is located between the master plunger assembly and the second barrel end so as to define two chambers. The first chamber a liquid chamber and is between the slave plunger and the second barrel end, and the second chamber is a pneumatic chamber and is between the slave plunger and the master plunger assembly. The liquid-containing chamber is suitable for containing a liquid to be dispensed from the syringe, and the pneumatic chamber contains a gas such as air. When the liquid-containing chamber contains a liquid to be dispensed, a user applying selective pressure to the plunger member will cause the master plunger assembly to slide towards the slave plunger and compress the gas against the slave plunger. The slave plunger will as a result of this pressure slide towards the second barrel end as the gas decompresses and apply pressure against the liquid as a result thereof. The liquid will then be dispensed out of the syringe or cartridge via a needle attached to the barrel end.
REFERENCES:
patent: 3990446 (1976-11-01), Taylor
patent: 4323066 (1982-04-01), Bourdon
patent: 4465474 (1984-08-01), Mardorf et al.
patent: 4573971 (1986-03-01), Kamstra
patent: 4592742 (1986-06-01), Landau
patent: 4624658 (1986-11-01), Mardorf et al.
patent: 4624659 (1986-11-01), Goldberg et al.
patent: 4832693 (1989-05-01), Gloyer
patent: 4952205 (1990-08-01), Mauerer et al.
patent: 4955947 (1990-09-01), Hajianpour
patent: 5071404 (1991-12-01), Larkin et al.
patent: 5102388 (1992-04-01), Richmond
patent: 5215533 (1993-06-01), Robb
patent: 5522804 (1996-06-01), Lynn
patent: 6425885 (2002-07-01), Fischer et al.
DeSanto Matthew
Sutton Paul J.
LandOfFree
Disposable syringe and cartridge with pneumatic chamber does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Disposable syringe and cartridge with pneumatic chamber, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disposable syringe and cartridge with pneumatic chamber will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3739122