Pre-stressed pressure device

A pressure device for treating a wound or reducing scarring of a skin of a patient, the pressure device comprising:

• a substrate assembly having a first surface side and a second surface side, as well as first and second end portions;
• a pressure member having a curved state and a non-curved state, the pressure member having an inner surface and an outer surface, the pressure member also comprising a central portion and first and second end portions,
• the central portion having a convex curved shape along the outer surface of the pressure member when the pressure device is not adhered to the skin of the patient, and the pressure member being connected to the second surface side of the substrate assembly;
• a treatment device connected to the outer surface of the pressure member, wherein the first and second end portions of the pressure member extend beyond ends of the treatment device;
• and
• an adhesive located on the first and second end portions of the substrate assembly and the first and second end portions of the pressure member for applying the pressure member to the skin of the patient;
• wherein when the adhesive secures the skin of the patient to the first and second end portions of the substrate assembly and the first and second end portions of the pressure member, and the pressure member is in the non-curved state, the pressure member exerts end forces directing the first and second end portions of the pressure member away from the skin of the patient and a central force directing the central portion of the pressure member towards the skin of the patient.