Dispensing – Processes of dispensing
Reexamination Certificate
1999-11-15
2001-05-01
Bomberg, Kenneth (Department: 3754)
Dispensing
Processes of dispensing
C222S327000, C222S340000, C222S386000, C222S137000, C604S082000, C604S191000
Reexamination Certificate
active
06223936
ABSTRACT:
FIELD OF THE INVENTION
The invention relates to a fluid delivery device for simultaneously delivering fluids from at least two fluid containers.
BACKGROUND
Automatic fluid delivery devices are well known. Typically, a force acts on a container holding a fluid so that the fluid, which is usually highly viscous, e.g., pastes, oils, medicaments, and the like, is disposed out of an end of the container. A spring or gas is typically used to supply the force acting on the container.
Known from patent EP-B-0 435 512 is a medicament delivery device in which a spring provided in the interior of a container directly acts on a plunger which separates the spring portion from the medicament portion. Due to the force of the spring the plunger is pushed into the medicament portion to dispel the medicament. Through an infusion tube the medicament is transported to the treatment site in the human body. The flow of the medicament is opened and closed by a clamp attached to the infusion tube. Any other way of closing off the medicament flow is achievable only at significantly greater expense.
U.S. Pat. No. 4,874,368, and PCT application WO 93/06940 describe delivery devices which deliver fluids from two containers arranged in parallel. The containers each have a movable plunger on one end, and an orifice on the other. Each plunger is connected to a plunger rod, the rods being held by a cover containing them. By manually moving the cover in the direction of the contained materials, the two plungers are pushed uniformly in the direction of the contained materials, disposing the materials out of the containers through the orifices. A dual cannula is fitted to the two orifices of the containers, and acts to mix the two materials upon discharge.
The disadvantage of these known devices is that the force for delivering the fluids dispensed needs to be applied either manually or, where automatic fluid delivery is involved, the device is insufficient for a dispensed delivery.
SUMMARY
The invention is intended to provide a solution to the above described problems. The invention is based on the object of developing a fluid delivery device which displaces fluid from at least two containers by means of a spring actuator, including a simple device for metering delivery and which is inexpensive to manufacture.
The invention achieves the cited object by a delivery device which comprises the at least two fluid containers, each fluid container having a plunger and a plunger rod, a pushing element that moves the plunger rods in the direction of the fluid containers under the guidance of a force element, and a brake element that acts on the pushing element and can counteract the force of the force element and can be deactivated manually.
One advantage of the invention is to permit metered delivery of the fluids to be mixed from two or more containers by means of an inexpensive automatic delivery device.
REFERENCES:
patent: 2556980 (1951-06-01), Raedecke
patent: 3782598 (1974-01-01), Basa
patent: 4214584 (1980-07-01), Smirnov
patent: 4865229 (1989-09-01), Schneider et al.
patent: 4874368 (1989-10-01), Miller
patent: 4957223 (1990-09-01), Beilush
patent: 5046642 (1991-09-01), Cathcart, Sr. et al.
patent: 5137181 (1992-08-01), Keller
patent: 5788673 (1998-08-01), Young
patent: 5875928 (1999-03-01), Muller et al.
patent: 5881928 (1999-03-01), Register et al.
patent: 5975367 (1999-11-01), Coelho et al.
patent: 6047861 (2000-04-01), Vidal et al.
patent: 6090080 (2000-07-01), Jost
patent: 0045339 (1982-02-01), None
patent: 0435512 (1991-07-01), None
patent: 0513128 (1992-11-01), None
patent: WO8505275 (1985-12-01), None
patent: WO9306940 (1993-04-01), None
Bomberg Kenneth
Disetronic Licensing AG
Dorsey & Whitney LLP
LandOfFree
Device for dispensing fluids does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for dispensing fluids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for dispensing fluids will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2540160