Electrochemical cell and method of making an electrochemical cell
First Claim
1. An electrochemical device having a sample-receiving end and a connector end comprising, in sequence:
- (a) a first substrate, having a layer of conductive material applied to a first surface thereof;
(b) an electrically-resistive middle layer, and(c) a second substrate, having a layer of conductive material applied to a first surface thereof;
wherein the first surface of the first substrate and the first surface of the second substrate are adhered to the electrically resistive middle layer;
wherein the device has a first sample space, said first sample space passing through electrically resistive middle layer and being bounded on opposing sides by a portion of the conductive material of the first substrate forming an unpatterned first electrode and a portion of the conductive material of the second substrate forming an unpatterned second electrode, andwherein the connector end comprises first and second connectors, said first connector having two separate contact pads and said second connector having at least one contact pad, wherein the first and second connectors extend from a common edge of the device and have open space therebetween, wherein the contact pad or pads of the second connector are between the contact pads of the first connector when viewed in the plane of the strip, and wherein if a conductive portion of the first connector faces a conductive portion of the second connector within the connector end of the device they are separated by the electrically resistive middle layer.
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Accused Products
Abstract
Electrochemical test cells are made with precision and accuracy by adhering an electrically resistive sheet having a bound opening to a first electrically conductive sheet. A notching opening is then punched through the electrically resistive sheet and the first electrically conductive sheet. The notching opening intersects the first bound opening in the electrically resistive sheet, and transforms the first bound opening into a notch in the electrically resistive sheet. A second electrically conductive sheet is punched to have a notching opening corresponding to that of first electrically conductive sheet, and this is adhered to the other side of the electrically resistive sheet such that the notching openings are aligned. This structure is cleaved from surrounding material to form an electrochemical cell that has a sample space for receiving a sample defined by the first and second conductive sheets and the notch in the electrically resistive sheet.
52 Citations
24 Claims
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1. An electrochemical device having a sample-receiving end and a connector end comprising, in sequence:
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(a) a first substrate, having a layer of conductive material applied to a first surface thereof; (b) an electrically-resistive middle layer, and (c) a second substrate, having a layer of conductive material applied to a first surface thereof; wherein the first surface of the first substrate and the first surface of the second substrate are adhered to the electrically resistive middle layer; wherein the device has a first sample space, said first sample space passing through electrically resistive middle layer and being bounded on opposing sides by a portion of the conductive material of the first substrate forming an unpatterned first electrode and a portion of the conductive material of the second substrate forming an unpatterned second electrode, and wherein the connector end comprises first and second connectors, said first connector having two separate contact pads and said second connector having at least one contact pad, wherein the first and second connectors extend from a common edge of the device and have open space therebetween, wherein the contact pad or pads of the second connector are between the contact pads of the first connector when viewed in the plane of the strip, and wherein if a conductive portion of the first connector faces a conductive portion of the second connector within the connector end of the device they are separated by the electrically resistive middle layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An electrochemical device having a sample-receiving end and a connector end comprising, in sequence:
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(a) a first substrate, having a layer of conductive material applied to a first surface thereof; (b) an electrically-resistive middle layer, and (c) a second substrate, having a layer of conductive material applied to a first surface thereof; wherein the first substrate, the second substrate and the middle layer define a sample space; wherein the first surface of the first substrate and the first surface of the second substrate are adhered to the electrically resistive middle layer, wherein the conductive material of the first surface forms a first unpatterned electrode in the sample space and the conductive material of the second surface forms a second unpatterned electrode in the sample space; wherein the connector end of the first substrate has two contact pads for contacting a test meter to the conductive material on the first substrate, said contact pads being disposed on opposing edges of the test strip, and the connector end of the second substrate has a contact pad for contacting a test meter to the conductive material on the second substrate, and wherein, except for the sample space, the facing conductive portions of the first substrate and the second substrate are separated by the electrically resistive middle layer. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification