Sensor devices
AssigneeGeneral Electric Company
InventorsMichael G. Clark, Rosemary A. Lee, Christopher R. Lowe, Philip Maynard, Rajinder S. Sethi, Donald J. Weir
Life of this patent
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Abstract
A sensor device for the analysis of a sample fluid comprises a substrate in a surface of which an elongate channel is micromachined. The channel contains a material, such as a starch, agarose, alginate, carrageenin or polyacrylic polymer gel, with a biological material for causing separation of the sample fluid as the fluid passes along the channel. The biological material may comprise, for example, a binding protein, an antibody, a lectin, an enzyme, a sequence of enzymes or a lipid. Pairs of sensing electrodes are spaced apart along the walls of the channel. The device may be used, for example, for testing blood samples.
Claims24
A sensor device for analysis of a sample fluid, the device comprising:
- a substrate having a surface;
- at least one elongate channel micromachined in the surface of the substrate for carrying said sample fluid, the channel having a length and opposed side walls;
- separation means, including a material in the channel, for causing separation of said sample fluid carried by the channel;
- a plurality of sensing electrode pairs spaced apart along the length of the channel, the electrodes of each pair being located opposite each other across the channel, and each electrode having a portion within the channel at one of said side walls;
- and means coupled to the electrodes for processing signals dependent upon conditions existing between the electrodes of each pair.
A sensor device for analysis of a sample fluid, the device comprising:
- a substrate having a surface;
- at least one elongate channel micromachined in the surface of the substrate for carrying said sample fluid, the channel having a length and opposed side walls;
- separation means, including a material in the channel, for causing separation of said sample fluid carried by the channel;
- a plurality of sensing electrode pairs equally spaced apart along the length of the channel, the electrodes of each pair being located opposite each other on the opposed side walls of the channel;
- and means coupled to the electrodes for processing signals dependent upon conditions existing between the electrodes of each pair.
A sensor device for analysis of a sample fluid, the device comprising:
- a substrate having a surface;
- at least one elongate channel micromachined in the surface of the substrate for carrying said sample fluid the channel having a length, opposite ends and opposed side walls;
- separation means, including a material in the channel, for causing separation of said sample fluid carried by the channel;
- a plurality of sensing electrode pairs spaced apart along the length of the channel, the electrodes of each pair being located opposite each other on the opposed side walls of the channel, the spacing between adjacent electrode pairs increasing from one of said ends of the channel to the other of said ends;
- and means coupled to the electrodes for processing signals dependent upon conditions existing between the electrodes of each pair.
Dependencies are inferred from the claim text.