Microfluidic device and uses thereof
First Claim
1. A microfluidic device comprising:
- a source microchannel connected between a source inlet and a source outlet;
a collection microchannel connected between a collection inlet and a collection outlet;
at least one transfer channel connecting the source microchannel and the collection microchannel;
a magnetic field source disposed adjacent to the collection microchannel and configured to apply a magnetic field gradient to a fluid flowing in the source microchannel and to cause target components in the source microchannel to migrate into at least one transfer microchannel, wherein the magnetic field source is positioned over said at least one transfer channel.
4 Assignments
0 Petitions
Accused Products
Abstract
A microfluidic device for separating target components from a source fluid includes one or more source channels connected to one or more collection channels by one or more transfer channels. The target components of the source fluid can be magnetic or bound to magnetic particles using a know binding agent. A source fluid containing magnetically bound target components can be pumped through the source channel of the microfluidic device. A magnetic field gradient can be applied to the source fluid in the source channel causing the magnetically bound target components to migrate through the transfer channel into the collection channel. The collection channel can include a collection fluid that is stagnant until a predefined volume of source fluid is processed or a predefined volume of target components accumulate in the collection channel, at which point collection fluid can be pumped into the collection channel to flush the target components out of the collection channel. The target components can be subsequently analyzed for detection and diagnosis.
30 Citations
20 Claims
-
1. A microfluidic device comprising:
-
a source microchannel connected between a source inlet and a source outlet; a collection microchannel connected between a collection inlet and a collection outlet; at least one transfer channel connecting the source microchannel and the collection microchannel; a magnetic field source disposed adjacent to the collection microchannel and configured to apply a magnetic field gradient to a fluid flowing in the source microchannel and to cause target components in the source microchannel to migrate into at least one transfer microchannel, wherein the magnetic field source is positioned over said at least one transfer channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method of separating a target component from a source fluid, the method comprising:
-
a. providing a microfluidic device having a source microchannel, a collection microchannel, and at least one transfer channel connecting the source microchannel to the collection microchannel, wherein a magnetic field source is positioned over said at least one transfer channel; b. causing the source fluid to flow through the source microchannel, wherein the source fluid includes the target component to be removed/separated, wherein the target component is attracted or repelled by a magnetic field; c. providing a collection fluid in the collection microchannel; and d. applying a magnetic field to the source fluid in the source channel, whereby the target components migrate into the transfer channel. - View Dependent Claims (14, 15, 16, 17, 18)
-
-
19. A microfluidic system comprising:
-
a source microchannel connected between a source inlet and a source outlet; a collection microchannel connected between a collection inlet and a collection outlet; at least one transfer channel connecting the source microchannel and the collection microchannel; a magnetic source disposed adjacent to the collection microchannel and configured to apply a magnetic field gradient to a fluid flowing in the source microchannel and to cause target components in the source microchannel to migrate into at least one transfer channel, wherein the magnetic field source is positioned over said at least one transfer channel; a fluid source connected to the source microchannel, adapted to deliver a source fluid to the source microchannel, the source fluid including target components to be removed from the source fluid, and, a collection fluid source connected to the collection microchannel, adapted to deliver a collection fluid to the collection microchannel to draw the target components from the transfer microchannel into the collection microchannel and flush the target components from the collection channel a source pump, connected to the source microchannel, and adapted to pump source fluid into the source microchannel; a source mixer, connected to the source microchannel and the fluid source, and adapted to mix the source fluid with magnetic particles; a collection pump, connected to the collection microchannel and the collection fluid source, and adapted to pump collection fluid into the collection microchannel; and a controller, having a processor and associated memory, and being coupled to the source pump to control the flow of source fluid through the source microchannel and being coupled to the collection pump to control the flow of collection fluid through the collection microchannel. - View Dependent Claims (20)
-
Specification