Solution discharging method and solution discharging device
AssigneeFujitsu Limited
InventorsKiyoshi Taninaka, Jun Sasaki, Akihiko Yabuki
Life of this patent
Estimating the term…
Abstract
A microinjection device includes a pressure pump and a regulator that is connected to the pressure pump and that maintains constant pressure. A regulating chamber is connected to the regulator and an internal pressure of the regulating chamber is maintained to a predetermined pressure. A valve is connected to the regulating chamber and a hollow capillary is connected to the valve. An operator opens/closes the valve in the process of injecting material in a cell.
Claims4
A solution discharging method for discharging a solution, from a hollow capillary with a narrow tip that is filled with the solution, into a cell due to an action of air pressure, the solution discharging method comprising:
- connecting a regulating chamber to the capillary by a valve;
- detecting the air pressure in the capillary before opening the valve;
- and
- regulating air in the regulating chamber at a predetermined pressure before opening and closing the valve so that regulated pressure has a rectangular waveform thereby controlling quantity of the solution that is to be injected from the capillary into the cell to be constant, the predetermined pressure being based on the pressure detected by the detecting and an equation of state of air.
Dependencies are inferred from the claim text.