Microflow Engineering Sa

C&eacute;dric Barraud

Joseph Hess

Bart Van Der Schoot

Hu Bo

Isabel Ortega

Nicolaas Frans De Rooij

Bas De Heij

Rapha&euml;l Weber

The liquid droplet spray device (,) has a micromachined substrate (,), a space (,) within the substrate for containing a liquid substance (,), an inlet channel for supplying (,) the liquid (,) to the space (,), and outlet structure (,) for ejecting the liquid as a mono-dispersive droplet spray when the liquid undergoes a vibration. The outlet structure comprises a cut-off pyramid-shaped tapered cavity (,) which is micromachined in the space (,). The outlet structure further comprises at least one output (,) and output channel (,) connecting the tapered cavity (,) to the outlet (,), the outlet (,) and the output channel (,) having a non-tapered vertical shape. Thanks to such a device, the exact amount ejected may be determined accurately which allows for a predicted lung deposition of the droplets by using appropriate control means adapted to the kind of patient.

Liquid droplet spray device for an inhaler suitable for respiratory therapies

Growing community of inventors

Cornaux, Switzerland

Cédric Barraud

Growing community of inventors

Cornaux, Switzerland

C&eacute;dric Barraud

Cédric Barraud