A method of prepping a cylindrical inner surface of a bore using a high-frequency forced pulsed waterjet apparatus entails generating a pressurized waterjet using a high-pressure water pump, generating a high-frequency signal using a high-frequency signal generator, applying the high-frequency signal to a transducer having a microtip to cause the microtip to vibrate to thereby generate the high-frequency forced pulsed waterjet, and rotating the rotatable ultrasonic nozzle inside the bore to prep the inner cylindrical surface of the bore using the high-frequency forced pulsed waterjets exiting from the angled exit orifices of the rotatable ultrasonic nozzle.

There is provided a liquid discharge head, including: a nozzle member formed having nozzle rows extending in a first direction, the nozzle rows being arranged in a second direction; driving elements; a first channel member disposed at one side of the nozzle member in a third direction; a second channel member disposed at the one side of the first channel member in the third direction; and a third channel member disposed at the one side of the second channel member in the third direction.

Methods and devices for atomizing a fragrant liquid are disclosed. A reservoir receives a volume of a base liquid. One or more drops of a substance are added to the base liquid to form a volume of an aromatic liquid. A vaporizer atomizes the aromatic liquid, forming a mist that is emitted from the device. The device allows a user to customize the blend of substances that are used to form the aromatic liquid.

A disinfecting device for purifying air to reduce the presence of dust and/or pathogens. The device includes a main housing, a battery module configured for installation within a first receptacle in the main housing and a reservoir module configured for installation within a second receptacle in the main housing. The reservoir is configured to hold a disinfecting fluid. The housing also includes an ultrasonic wave emitter electrical power communication with the battery, the ultrasonic wave emitter providing ultrasonic waves to the disinfecting fluid thereby creating a pressurized fluid, a membrane in contact with the pressurized fluid. The membrane generates reduced-size particles of the pressurized fluid which are emitted from a nozzle mounted on the housing.

There is provided a mesh for use in forming droplets of liquid in a nebuliser, the mesh comprising a first portion (22) made of a first material having a plurality of holes passing therethrough; and a second portion (26) made of a second material that is in contact with the first portion (22), the second portion (26) having a corresponding plurality of holes passing therethrough, the plurality of holes in the second portion forming nozzles (28) for an outlet side of the mesh; wherein the first material has a higher density than the second material.

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.

The invention relates to a delivery device for nasal medication. It addresses need for delivering medication to the nose of a patient. In a preferred embodiment the device has: •A transducer 10 adapted to create an ultrasonic focal zone; •a feeder chamber 13 holding medication; •an energising chamber 14 smaller than the feeder chamber; •a mesh 15; and •an exit 17. The device is formed so that when it is activated the feeder chamber 13 continuously fills the energising chamber 14 with medication (until the feeder chamber has insufficient medication left to achieve this) so that there is a substantially constant supply of medication within the focal zone able to be energised and forced from the energising chamber so as to contact the mesh, become an aerosol, and leave the device by way of the exit.

A microfluidic delivery device is provided. The microfluidic delivery device includes a housing electrically connectable with a power source. A cartridge is releasably connectable with the housing. The cartridge has a reservoir for containing a fluid composition and microfluidic die in fluid communication with the reservoir. The microfluidic die is configured to dispense substantially all of the fluid composition in an upward direction relative to horizontal. The microfluidic delivery device also includes a fan that is connected with the housing. The fan is configured to generate air flow that converges with and redirects the fluid composition dispensed from the microfluidic die in a first direction to a second direction that is different from the first direction.

Cartridges have a cartridge body configured to store a formulation, a formulation valve disposed in the cartridge body, and an air valve disposed in the cartridge body. The cartridge is configured to dispense the formulation through the formulation valve when the formulation valve and the air valve are each in an open state, and to not dispense the formulation when the formulation valve and the air valve are in a closed state.

The disclosure relates to a method and apparatus for preventing oxidation or contamination during a circuit printing operation. The circuit printing operation can be directed to OLED-type printing. In an exemplary embodiment, the printing process is conducted at a load-locked printer housing having one or more of chambers. Each chamber is partitioned from the other chambers by physical gates or fluidic curtains. A controller coordinates transportation of a substrate through the system and purges the system by timely opening appropriate gates. The controller may also control the printing operation by energizing the print-head at a time when the substrate is positioned substantially thereunder.