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.
These sutures are not used in wounds that may be subject to a lot of movement or tension on the tissue stitched together. Monocrylâ¢ sutures are made from a polymer material called poliglecaprone 25, a mixture of a glycolide and epilson-caprolactone. The synthetic material is designed to cause minimal damage to soft tissue when the suture is passed through it. This suture is also biodegradable.