Microfabricated separation device employing a virtual wall for interfacing fluids
First Claim
1. A separation device, comprising:
- one or more anode reservoirs;
a plurality of separation channels connected to said anode reservoirs, each of said separation channels having an interior bounded by a side wall;
one or more fluid interface ports formed in the side wall of one of said separation channels to provide access to the interior of the separation channel, wherein a separation medium disposed in the interior of the separation channel forms a virtual wall at the fluid interface port; and
at least one cathode reservoir multiplexed with two or more of said separation channels.
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Accused Products
Abstract
A fluid interface port in a separation device for separating a sample into different components is provided. The separation device includes an array of separation channels and the fluid interface port comprises an opening formed in the side wall of a separation channel sized and dimensioned to form a virtual wall when the separation channel is filled with a separation medium. The fluid interface port is utilized to introduce a liquid sample into the separation medium. The fluid interface ports formed in the array of separation channels are organized into one or more sample injectors. A cathode reservoir is multiplexed with one or more separation channels. To complete an electrical path, an anode reservoir which is common to some or all separation channels is also provided.
54 Citations
45 Claims
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1. A separation device, comprising:
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one or more anode reservoirs;
a plurality of separation channels connected to said anode reservoirs, each of said separation channels having an interior bounded by a side wall;
one or more fluid interface ports formed in the side wall of one of said separation channels to provide access to the interior of the separation channel, wherein a separation medium disposed in the interior of the separation channel forms a virtual wall at the fluid interface port; and
at least one cathode reservoir multiplexed with two or more of said separation channels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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12. A separation device, comprising:
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an array of microfabricated separation channels formed at a surface of a first microfabricated substrate and a corresponding surface of a second substrate bonded to the surface of said first substrate, each of said channels having an interior bounded by a side wall, a first end and a second end;
an array of fluid interface ports formed in the side walls of said separation channels to provide access to the interiors of the separation channels, wherein a separation medium disposed in the interior of the separation channel forms a virtual wall at each of the fluid interface ports in the array;
an array of cathode reservoirs connected to the first end of each of the separation channels; and
an array of anode reservoirs, wherein at least one anode reservoir is connected to the respective second ends of at least two of the separation channels.
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30. A separation device, comprising:
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a substrate;
a plurality of separation channels formed in said substrate, each of said separation channels having an interior bounded by a side wall;
a plurality of fluid interface ports formed in the side walls of said separation channels to provide access to the interior of the separation channel, wherein a separation medium disposed in the interior of the separation channel forms a virtual wall at the fluid interface port and wherein each separation channel of the plurality of separation channels includes at least one dedicated fluid interface port; and
an anode reservoir multiplexed to two or more of the plurality of separation channels. - View Dependent Claims (31)
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32. A separation device, comprising:
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a substrate;
a plurality of separation channels formed in said substrate, each of said separation channels having an interior bounded by a side wall;
a plurality of fluid interface ports formed in the side walls of said separation channels to provide access to the interior of the separation channel, wherein a separation medium disposed in the interior of the separation channel forms a virtual wall at the fluid interface port and wherein each separation channel of the plurality of separation channels includes at least one dedicated fluid interface port; and
a cathode reservoir multiplexed to two or more of the plurality of separation channels. - View Dependent Claims (33, 34, 35, 36, 37, 38)
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39. A method for injecting a liquid sample through a separation device, comprising the steps of:
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connecting a cathode reservoir to respective first ends of two or more separation channels;
connecting an anode reservoir to respective second ends of two or more of said separation channels;
forming a droplet from the liquid sample;
directing the droplet to a virtual wall formed by a separation medium in a fluid interface port formed in a side wall of a separation channel; and
applying a voltage to the fluid interface port to draw the sample into the separation channel.
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40. A method of forming a separation device for separating a sample into different components, comprising the steps of:
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forming a plurality of separation channels in said separation device, each of said separation channels defined by an interior bounded by a side wall;
forming a plurality of fluid interface ports in the side walls of said separation channels to provide access to the interior of the separation channels, wherein each fluid interface port forms a virtual wall when the separation channels are filled with a separation medium; and
connecting an anode reservoir to two or more of the plurality of separation channels. - View Dependent Claims (41, 42)
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43. A method of forming a separation device for separating a sample into different components, comprising the steps of:
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forming a plurality of separation channels in said separation device, each of said separation channels defined by an interior bounded by a side wall;
forming a plurality of fluid interface ports in the side walls of said separation channels to provide access to the interior of the separation channels, wherein each fluid interface port forms a virtual wall when the separation channels are filled with a separation medium; and
connecting a cathode reservoir to two or more of the plurality of separation channels. - View Dependent Claims (44, 45)
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Specification