Insorb Subcuticular Skin Stapler. INSORB staples are made from an absorbable copolymer which is a synthetic polyester derived from lactic and glycolic acids. It is chemically similar to other surgical glycolide/lactide-based copolymers. Polyglycolic/polylactic acid copolymers degrade in vivo by hydrolysis to glycolic acid and lactic acid which are then absorbed and metabolized by the body.