Back to results
US 6,296,811 B1Granted
Fluid dispenser and dispensing methods
AssigneeAurora Biosciences Corporation
InventorGlenn C. Sasaki
Life of this patent
Estimating the term…
Abstract
A fluid dispenser comprises a fluid chamber having two actuators coupled thereto. One of the actuators damps a fluid response of the other. The fluid chamber may comprises a cylindrical capillary, and the actuators may comprise spaced cylindrical piezoelectric elements.
Claims8
An apparatus for dispensing droplets of fluid comprising:
- a fluid chamber having an opening therein for droplet dispensing and having no permanent constriction interfering with flushing of particulate matter from the fluid chamber;
- a first actuator mechanically coupled to said fluid chamber and configured to alter the volume thereof;
- a second actuator mechanically coupled to said fluid chamber and configured to alter the volume thereof, wherein said second actuator is further away from said opening than said first actuator;
- and
- a driver connected to actuate said first and said second actuators with simultaneous and identical voltage pulses so as to dispense fluid droplets from said fluid chamber.
2 more elements
A chemical screening apparatus comprising:
- a array of reagent dispensers configured to dispense reagents into an array of wells in a multi-well plate, wherein each of said reagent dispensers comprises:
- a substantially cylindrical capillary having a nozzle at one end thereof;
- and
- at least two substantially cylindrical piezoelectric transducers surrounding said capillary so as to eject said reagent from said capillary through said nozzle, wherein said transducers are all positioned at least about 10 mm away from said nozzle.
1 more element
Dependencies are inferred from the claim text.