Ian W. Hunter,Andrew J. Taberner,Brian D. Hemond,Dawn M. Wendell,Nora Catherine Hogan,Nathan B. Ball
申请号：
US12906525
公开号：
US08328755B2
申请日:
2010.10.18
申请国别(地区):
US
年份:
2012
代理人:
摘要：
A needle-free transdermal transport device for transferring a substance across a surface of a biological body includes a reservoir for storing the substance, a nozzle in fluid communication with the reservoir and a controllable electromagnetic actuator in communication with the reservoir. The actuator, referred to as a Lorentz force actuator, includes a stationary magnet assembly and a moving coil assembly. The coil assembly moves a piston having an end portion positioned within the reservoir. The actuator receives an electrical input and generates in response a corresponding force acting on the piston and causing a needle-free transfer of the substance between the reservoir and the biological body. The magnitude, direction and duration of the force are dynamically controlled (e.g., servo-controlled) by the electrical input and can be altered during the course of an actuation cycle. Beneficially, the actuator can be moved in different directions according to the electrical input.
