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

Claim 0:
1. A method for measuring wound healing, comprising:
measuring a wound transfer impedance by a first tetrapolar arrangement of electrodes arranged on both sides of a wound; 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,

measuring a reference transfer impedance by a second tetrapolar arrangement of electrodes arranged on one side of the wound; 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,

wherein the wound transfer impedance and the reference transfer impedance are measured over a frequency range, and
determining, by a controller, at least one level of the wound healing on the basis of a ratio between the wound transfer impedance and the reference transfer impedance and a change of said ratio over at least part of the frequency range,
wherein the change of said ratio meets a predefined threshold.