Secondary Waves Defined. Secondary waves, or S-waves, are seismic waves produced by an earthquake. As one side of a fault slips past the other, the pressure that had been stored is released and travels radially away from the focus of the earthquake.
Non-Absorbable sutures include :- Polypropylene sutures, Nylon (poylamide), Polyester, PVDF, silk and stainless steel sutures. Monofilament and Multifilament Sutures. Sutures can also be divided into two types on the basis of material structure i.e. monofilament sutures and multifilament or braided sutures. Braided sutures provide better knot security whereas monofilament sutures provide better passage through tissues.
Duracryl is the brand name of polydioxanone sutures manufactured by Dolphin Sutures. Polydioxanone suture is a sterile monofilament synthetic absorbable suture composed of the polyester, poly (p-dioxanone).Polydioxanone suture provides wound support for longer period as compared to other synthetic absorbable sutures. Polydioxanone sutures retain about 70% of the initial tensile strength after 2 weeks, 50% of the initial tensile strength after 4 weeks and 25% after 6 weeks of implantation and the suture is essentially absorbed within 180 days. 2  Duracryl sutures pass through tissue easily causing very little trauma.