ELECTRICAL IMPEDANCE SPECTROSCOPY MEASUREMENT BASED ON CONCENTRIC BIPOLAR MICROELECTRODE SENSOR

摘要

A portion of a concentric bipolar microelectrode sensor is attached to an inflatable balloon of a catheter. Another portion of the concentric bipolar microelectrode sensor is also attached to a body of the catheter. The inflatable balloon is guided to become in proximity of a tissue. The inflatable balloon is then inflated. The inflation increases the likelihood of contact between microelectrodes of the concentric bipolar microelectrode sensor with the tissue. A voltage is supplied to the microelectrodes. The tissue's impedance is accordingly measured over a frequency range. A disease of the tissue, such as a lesion, is diagnosed based on the measured impedance.

主权项

1. An electrical impedance sensor comprising:
an inner electrode disposed in a flat, circular ring; an outer electrode disposed in a flat, circular ring, wherein the outer electrode is concentric to the inner electrode and substantially surrounds the inner electrode, and wherein the outer electrode and the inner electrode form concentric electrodes; a pair of pads disposed on opposite sides of the concentric electrodes; a first ribbon cable extending radially from the inner electrode to a first pad of the pair of pads; and a second ribbon cable extending radially from the outer electrode to a second pad of the pair of pads, wherein each of the first ribbon cable and the second ribbon cable has a serpentine length, thereby configured to extend and retract.