Capillary electrophoresis device
First Claim
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1. An apparatus, comprising:
- an electrically insulating circuit board;
at least one electrical path comprising at least one conductive trace attached to the circuit board, said at least one electrical path generating Joule energy responsive to electrical current through said at least one electrical path, wherein the at least one electrical path forms at least one thermal area; and
at least one electrophoresis capillary in thermal contact with said at least one thermal area, such that said at least one electrophoresis capillary is thermally regulated responsive to electrical current through said at least one electrical path.
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Abstract
This invention provides a capillary electrophoresis device in which capillaries are thermally regulated on a thermally responsive electrical path attached to an electrically insulating circuit board. This invention also provides an optical scanner useful for scanning an array of capillaries. A laser, optical detector and optical selector are in an arrangement that allows the optical detector to selectively detect an optical signal from any one or more of the plurality of electrophoresis capillaries.
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Citations
35 Claims
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1. An apparatus, comprising:
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an electrically insulating circuit board; at least one electrical path comprising at least one conductive trace attached to the circuit board, said at least one electrical path generating Joule energy responsive to electrical current through said at least one electrical path, wherein the at least one electrical path forms at least one thermal area; and at least one electrophoresis capillary in thermal contact with said at least one thermal area, such that said at least one electrophoresis capillary is thermally regulated responsive to electrical current through said at least one electrical path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus, comprising:
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(a) an electrophoresis thermal assembly, including; an electrically insulating circuit board; at least one electrical path comprising at least one conductive trace attached to the circuit board, said at least one electrical path generating Joule energy responsive to electrical current through said at least one electrical path; at least one electrophoresis capillary in thermal contact with said at least one electrical path, such that said at least one electrophoresis capillary is thermally regulated responsive to electrical current through said at least one electrical path; (b) at least one analyte injector coupled to inject at least one electrophoresis analyte into said at least one electrophoresis capillary; (c) a voltage source coupled to opposite ends of said at least one electrophoresis capillary providing an electrophoretic voltage difference between the opposite ends of said at least one electrophoresis capillary; (d) a laser device positioned to deliver a beam from the laser device to said at least one electrophoresis capillary; (e) an optical detector optically coupled to receive an optical signal from said at least one electrophoresis capillary.
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18. A method, comprising:
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providing an apparatus comprising; an electrically insulating circuit board; at least one electrical path comprising at least one conductive trace attached to the circuit board, said at least one electrical path generating Joule energy responsive to electrical current through said at least one electrical path, wherein the at least one electrical path forms at least one thermal area; and at least one electrophoresis capillary in thermal contact with said at least one thermal area, such that said at least one electrophoresis capillary is thermally regulated responsive to electrical current through said at least one electrical path; electrophoretically moving analytes through at least one electrophoresis capillary; and thermally heating said at least one electrophoresis capillary via thermal contact with said at least one thermal area with Joule energy generated by passing electrical current through said at least one electrical path attached to said electrically insulating circuit board. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method, comprising:
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separately regulating temperature in different sections of at least one capillary via thermal contact with different thermal areas formed from different electrical paths carrying electrical currents through an electrically insulating circuit board, wherein each of said different electrical paths comprise different conductive traces attached to the circuit board, said different electrical paths generating Joule energy responsive to electrical current through said different electrical paths, wherein the different electrical path forms said thermal areas; and moving analytes through said at least one capillary supporting a biochemical activity in the separately thermally regulated different sections of said at least one electrophoresis capillary. - View Dependent Claims (31, 32, 33, 34, 35)
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Specification