Patent ID: 7833189

Claim:
A needle-free transdermal transport device for transferring a substance across a surface of a biological body comprising: a reservoir for storing the substance; a nozzle in fluid communication with the reservoir; and a controllable Lorentz-force electromagnetic actuator in communication with the reservoir, the actuator comprising: a stationary magnet assembly providing a magnetic field; and a coil assembly, slidably disposed with respect to the magnet assembly, the coil assembly receiving an electrical input and generating in response a force corresponding to the received input, the force resulting from interaction of an electrical current within the coil assembly and the magnetic field and causing a needle-free transfer of the substance between the reservoir and the biological body; and a servo-controller in electrical communication with the controllable electromagnetic actuator, the servo-controller providing the electrical input, the force generated within the coil assembly being dynamically variable during injection of the substance according to variations in the received electrical input.