Inclusion Criteria:  Venous leg ulcer evolving for at least 3 months, the area of which is between 4 cm² and 200 cm² and the smallest axis of which is less than 10 cm and the largest axis less than 20 cm; Have a Systolic Pressure Index (IPS) at the ankle between 0.89 and 1.3 and / or a systolic pressure measurement at the big toe greater than or equal to 60 mmHg; Accept the port of venous compression; Presenting superficial and / or deep venous insufficiency, documented on a Doppler echo dating less than one year; affiliated to a social security scheme or beneficiary of such a scheme; Having given their free, informed and written consent.  Exclusion Criteria:  Untreated infected wound; Cancerous ulcer; Treated with systemic corticosteroids or chemotherapy; for which a skin graft is necessary; Contraindications for the treatment of leg ulcers with the WoundEL system; Pregnant or lactating women; Vulnerable people or under legal/judicial protection