Probe for measuring biomolecules by means of electrochemical impedance spectroscopy

A probe for measuring biomolecules by electrochemical impedance spectroscopy, the probe having a distal end, a proximal end, a longitudinal extent, and a structure in a cross-section oriented transversely to the longitudinal extent, comprising:

• a base layer of an insulating material having a first side and a second side which is remote from the first side,
• wherein on the first side of the base layer is at least one layer of a conducting material, and on the second side of the base layer is at least one layer of a conducting material, and on the side of the layers of conducting material that is remote from the base layer, on the outside, in each case an outer layer of an insulating material,
• wherein the at least one layer of a conducting material on the first side of the base layer is formed into an annular conductor structure in a region of the distal end of the probe,
• wherein the annular conductor structure is followed proximally by at least one elongate conductor which is in a form of a feed line for the annular conductor structure and extends to the proximal end of the probe,
• wherein the at least one layer of a conducting material on the second side of the base layer covers a predominant part of a base surface of the base layer,
• wherein the at least one layer of a conducting material on the second side of the base layer has in the region of the distal end of the probe a polygonal hole which is arranged concentrically to the annular conductor structure, and
• wherein the at least one layer of a conducting material on the first side of the base layer, which follows proximally the annular conductor structure as the feed line, comprises at least two elongate conductors which are spaced apart from one another and which are connected electrically to one another in a region of the connection to the annular conductor structure and in a region of the proximal end of the probe.