Nonabsorbable meshes remain in the body indefinitely and are considered a permanent implant. It is used to provide permanent reinforcement in hernia cases. Absorbable patches break down over time and lose their strength. It is therefore not intended to provide long-term reinforcement. It is intended to give strength to the tissue until the tissue heals. The most commonly used patches today are prolene (polypropylene) patches used in hernia repairs.