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US 11,890,106 B2Granted
Measuring wound healing
AssigneeCutoSense Oy
InventorsAtte Kekonen, Mikael Bergelin, Jan-Erik Eriksson, Max Johansson
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Abstract
According to an example aspect of the present invention, there is provided method for measuring wound healing, comprising, measuring a wound impedance by a first tetrapolar arrangement of electrodes arranged on both sides of a wound, measuring a reference impedance by a second tetrapolar arrangement of electrodes arranged on one side of the wound, determining, by a controller, wound healing on the basis of the wound impedance and the reference impedance measured over a frequency range.
Claims15
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.
8 more elements
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.
9 more elements
A processor and memory device, the memory device configured to store a computer program to cause a method for measuring wound healing to be performed, the method 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.
8 more elements
Dependencies are inferred from the claim text.