Patent ID: 11938057
Assignee: BAUSCH + LOMB IRELAND LIMITED
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. Apparatus for delivering a liquid to an eye of a patient, the apparatus comprising:
a) a reservoir configured to contain the liquid;
b) a liquid dispenser in fluid communication with the reservoir, the liquid dispenser having i) a flexible aperture through which the liquid from the reservoir can be dispensed, and ii) a pin member for engagement with the flexible aperture to seal the flexible aperture;
c) an actuator designed to provide a mechanical excitation to the liquid dispenser that generates a corresponding hydrodynamic excitation of the liquid such that the liquid i) deforms the flexible aperture to disengage the pin member from the flexible aperture; and ii) ejects the liquid through the flexible aperture; and
d) a sensor positioned to measure frequency of the mechanical excitation and to provide feedback so that movement of the actuator can be adjusted to control its mechanical excitation.