Abstract: The present invention is directed to devices that allow for measurement of molecule/particle viscosity. The present invention features a microfluidic platform for measuring fluid viscosity. In some embodiments, the microfluidic platform may comprise a main chamber and one or more cavity acoustic transducers (CATs). The microfluidic platform may further comprise an external acoustic source coupled to the main chamber. The microfluidic platform may further comprise a fluid disposed into the main chamber. Said fluid may comprise one or more beads. The fluid may intersect the CATs to form one or more interfaces. The CATs may be configured to oscillate the interfaces to generate microstreaming flow patterns trapping the one or more beads therein. A viscosity of the fluid can be derived from the velocity.

Abstract: A method for treating a medical condition, such as obstructive sleep apnea, includes the step of stimulating a nerve, particularly the hypoglossal nerve, using at least one of the following techniques: (a) continuous low-level electrical stimulation; (b) electrical stimulation synchronized with a physical process, such as inspiration, without feedback from the nerve being stimulated; and (c) intermittent electrical stimulation at controlled intervals based on the patient's metabolism.