Device and method for coating surfaces
AssigneeVaxxas Pty Limited
InventorsXi Wang, Michael Carl Junger, Sasikaran Kandasamy, Neil Harris, Christopher Flaim
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Abstract
The present invention relates to devices and methods for coating surfaces including surfaces of medical devices, in particular the coating of microprojections on microprojection arrays. The present invention also relates to print head devices and their manufacture and to methods of using the print head devices for manufacturing articles such as microprojection arrays as well as to coating the surfaces of microprojection arrays. The present invention also relates to high throughput printing devices that utilize the print heads of the present invention.
Claims18
A device for coating a substrate comprising:
- a pumping chamber plate comprising one or more air venting facilities a) wherein a biological fluid is contained within the pumping chamber plate;
- b) a nozzle plate attached to the pumping chamber plate, wherein the nozzle plate is from 200 to 500 microns thick, wherein the nozzle plate contains nozzle holes which are 60 to 200 microns in diameter and arranged in a two dimensional array, and wherein the nozzle plate comprises venting holes which are connected to the one or more air venting facilities of the pumping chamber plate;
- c) a membrane plate;
- and
- d) a piezoelectric actuator wherein the piezoelectric actuator, in operation, pushes against the membrane plate such that the biological fluid is dispensed in 100 to 500 picoliter drops.
Dependencies are inferred from the claim text.