Abstract:
A method and microfluidic platform is provided for providing a closed loop, microfluidic circulatory system having the steady flow of fluid therethrough. A first flow path is filled with a first fluid. The first flow path has an inlet and an outlet. A passageway extending through a first tube is filled with a second fluid. The passageway has first and second ends. The first end of the passageway is interconnected to the inlet of the first flow path and the second end of the passageway is interconnected to the outlet of the first flow path. A pump pumps the first and second fluids in steady flow through the first flow path and the passageway.
Abstract:
A method is provided of obtaining a sample concentration of a solution in a microfluidic device. The microfluidic device includes a channel having a reservoir and a collection port. The channel is filled with a solution having particles therein. A reservoir drop is deposited over the reservoir of the channel such that the solution of the channel flows towards the collection port in response to evaporation of the solution at the collection port. The particles at the collection port are collected to obtain the sample concentration.
Abstract:
A drug delivery platform is provided for delivering a controlled infusion of a drug to an individual. The drug delivery platform includes a reservoir for receiving the drug therein and a hydrogel engageable with the reservoir. The hydrogel is movable between a first configuration and a second configuration wherein the hydrogel exerts a pressure on the reservoir to urge the drug therefrom in response to a predetermined stimulus. A flow guide distributes the predetermined stimulus over the hydrogel in response to activation by an individual.
Abstract:
A microfluidic platform and method are provided. The microfluidic platform includes a base having an outer surface and a plurality of wells formed in the outer surface thereof for receiving fluid therein. The plurality of wells are in fluid communication with each other. A lid includes a plurality of channels having corresponding inputs and outputs. The lid is moveable between a first position wherein the lid is disengaged from the base and a second position wherein the inputs of each channel communicate with corresponding wells in the base. The fluid in each well is drawn into corresponding channels through the inputs thereof by capillary action.
Abstract:
A method and device are provided for actuating fluid flow in a channel of a microfluidic device. The microfluidic device has a first and second ports communicating with the channel. The channel is filled with a fluid and oscillatory movement of the fluid in the channel is generated in response to movement of an actuator between a first retracted position and a second extended position.
Abstract:
A microfluidic device and method is provided for coupling discrete channels and for co-culture. The microfluidic device includes first and second bodies. Each body has a bottom surface and defines a channel. The channel in each body includes an inlet and an outlet communicating with the bottom surface. A first fluid, such as a first cell suspension, is provided within the channel of the first body and a second fluid, such a second cell suspension, is provided within the channel of the second body. The first and second bodies are movable between a first position wherein the outlet of the channel of the first body is spaced from the inlet of the channel of the second body and a second position wherein the fluid at the outlet of the channel of the first body communicates with the fluid at the inlet of the channel of the second body.
Abstract:
A device and method is provided for performing a high throughput assay. The device includes a plate structure having a plate and a plurality of microfluidic structures positioned thereon. Each microfluidic structure defines a channel having an input and an output. At least one of the input and the output of the channel of each of the plurality of mircofluidic structures includes a first plurality of ports. In operation, the channels are filled with fluid and pressure gradients are generated between the fluids at the inputs and the fluids at the outputs of the channels. As a result, fluid flows through the channels toward the outputs.
Abstract:
A method is provided of controlling communication between multiple ports in a microfluidic device. The method includes the step of providing a channel network in a microfluidic device. The channel network including a first channel having a first input port and an output port. The first channel is filled with a fluid and a first output droplet is deposited on the output port. The first output droplet has a radius of curvature. The first output droplet flows toward the first input port in response to placement of a first input droplet having a radius of curvature greater than the radius of curvature of the first output droplet on the first input port. The first input droplet flows toward the output port in response to the first input droplet having a radius of curvature less than the radius of curvature of first output droplet.
Abstract:
A method is provided for collecting a concentration of particles from a sample fluid containing the particles. The method includes the steps of providing a microfluidic device. The microfluidic device includes an input channel, an output channel and a collection region. The input channel has an input end and an output end. The output channel has an input end and an output end. The collection region interconnects the output end of the input channel and the input end of the output channel. The sample fluid flows through the input channel and the output channel at a first velocity and through the collection region at a second velocity less than the first velocity such that the particles collect in therein.
Abstract:
A bladder arrangement is provided for a microneedle-based drug delivery device. The bladder arrangement includes a flexible membrane having an inner surface, an outer surface and an outer periphery. A bladder member, having a rigidity greater than the flexible membrane, includes an inner surface, an outer surface and an outer periphery. The inner surface of the flexible membrane and the inner surface of the bladder member define a chamber for receiving a drug therein. At least one microneedle is operatively connected to the bladder member. The at least one microneedle has an input and an output receivable within the individual. A valve operatively connects the input of the at least one microneedle and the chamber.