Patent ID: 11890106
Assignee: CUTOSENSE OY
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 6:
7. An arrangement for measuring wound healing comprising:
a first tetrapolar arrangement of electrodes adapted to be arranged on both sides of a wound for measuring a wound transfer impedance, wherein the first tetrapolar arrangement of electrodes comprises two current feeding electrodes and two voltage sensing electrodes, wherein the measuring of the wound transfer impedance comprises:
applying, by the two current feeding electrodes, an excitation signal, and
measuring, by the voltage sensing electrodes, an impedance based on a voltage difference induced by the excitation signal,

a second tetrapolar arrangement of electrodes adapted to be arranged on one side of the wound for measuring a reference transfer impedance, wherein the second tetrapolar arrangement of electrodes comprises two current feeding electrodes and two voltage sensing electrodes, wherein the measuring of the reference transfer impedance comprises:
applying, by the two current feeding electrodes, an excitation signal, and
measuring, by the voltage sensing electrodes, an impedance based on a voltage difference induced by the excitation signal,

and
a controller configured to determine at least one level of the wound healing on the basis of at least one of:
a ratio between the wound transfer impedance and the reference transfer impedance; and
a change of said ratio over at least part of a frequency range, wherein the change of said ratio meets a predetermined threshold,

wherein the wound transfer impedance and the reference transfer impedance are measured over the frequency range.