DEVICE AND METHOD FOR USE OF BUBBLE AS VIRTUAL VALVE IN MICROINJECTOR FOR DISCHARGE OF LIQUID Russian patent published in 2003 - IPC

FIELD: typewriters, methods for discharge of liquid from microinjector. SUBSTANCE: the device and the method are characterized by the fact that formation of a bubble inside the microchannel of the microinjector provides for its operation as a valve mechanism with a high resistance for liquid outcoming from the chamber through a branch pipe during the discharge of liquid through a hole and low resistance for replenishment of the chamber with liquid after the discharge of liquid and compression of the bubble. For a sharp stoppage of the discharge of liquid and, as a result, for prevention of accomponying drops a second bubble is formed inside the chamber that is combined with the first bubble between the chamber and the branch pipe. EFFECT: minimized mutual influence between the adjacent chambers and enhanced frequency of injection of the microinjector. 41 cl, 15 dwg