Controlled needle-free transport
First Claim
1. A needle-free transdermal transport device for transferring a substance through a surface of a biological body, said device comprising:
- a reservoir for storing the substance;
a nozzle in fluid communication with the reservoir;
a controllable Lorentz-force electromagnetic actuator in communication with the reservoir, the actuator during operation responding to a received electrical input by generating a force proportional to the received input and variable responsive to variations in the received input, wherein the received input of a first type causes a needle-free injection of the substance from the reservoir into the biological body and the received input of a second type causes a needle-free withdrawal of a sample from the biological body into the transport device;
a servo-controller for providing the electrical input into the actuator, the servo-controller dynamically controlling the force generated by the actuator during the injection; and
an analyzer adapted to analyze the sample withdrawn from the body by the needle-free transdermal transport device, the servo-controller adapted to control the injection of the substance in response to an the analysis by the analyzer of the withdrawn sample.
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Accused Products
Abstract
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.
67 Citations
17 Claims
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1. A needle-free transdermal transport device for transferring a substance through a surface of a biological body, said device comprising:
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a reservoir for storing the substance; a nozzle in fluid communication with the reservoir; a controllable Lorentz-force electromagnetic actuator in communication with the reservoir, the actuator during operation responding to a received electrical input by generating a force proportional to the received input and variable responsive to variations in the received input, wherein the received input of a first type causes a needle-free injection of the substance from the reservoir into the biological body and the received input of a second type causes a needle-free withdrawal of a sample from the biological body into the transport device; a servo-controller for providing the electrical input into the actuator, the servo-controller dynamically controlling the force generated by the actuator during the injection; and an analyzer adapted to analyze the sample withdrawn from the body by the needle-free transdermal transport device, the servo-controller adapted to control the injection of the substance in response to an the analysis by the analyzer of the withdrawn sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification