Straight Cutting Needles. PDS II (polydioxanone) monofilament synthetic absorbable suture is prepared from the polyester, poly (p-dioxanone). PDS sutures are indicated for use in soft tissue approximation, including use in pediatric cardiovascular tissue where growth is expected to occur and ophthalmic surgery. PDS sutures are not indicated in adult cardiovascular tissue, microsurgery and neural tissue. These sutures are particularly useful where the combination of an absorbable suture and extended wound support (up to six weeks) is desirable.