Monitoring of Venous Ulcers Using a Bioimpedance Measurement Based Method and System

Inclusion Criteria: * Age at least 18 years * The subject has a chronic lower extremity ulcer with a primary etiology of venous insufficiency. The previous venous procedure is not an obstacle to the study * Compression therapy can be implemented * The wound is not wider than 5 cm and the electrode dressing can be placed on the wound as intended. The wound should be located above the ankle, on the skin area where the electrode dressing can be placed properly. * The wound is not deep with steep edges or cavity-like * The wound is not highly excreting * The wound can be expected to heal within two months (area reduced ≥ 90% from baseline) * The subject gives consent to the study and commits to following the instructions of the medical staff Exclusion Criteria: * Clinical wound infection at the time of the study * The subject has an intravenous (in Tampere: A venous operation) procedure within 2 months * Significant arterial circulatory disorder or adherence problem that prevents compression therapy (in Tampere: Contraindication for compression therapy, e.g. significant arterial circulatory disorder or severe heart failure) * Subject movement 2-3 times a week during the study to the study site is difficult to arrange (in Tampere: Subject not able to commit to study visits 2-3 times a week.) * Diagnosed epoxy resin allergy * Any other reasons of potential study subject non-compliance by the opinion of the investigator Additional local exclusion criteria in Tampere site: * Special groups, such as pregnant women/patients trying to conceive during the study or patients with reduced autonomy * Subject with any implantable electrical device. Such as pacemaker or implanted defibrillator. Patient has other electrically conductive implanted material in legs. Such as a metallic prostheses.