Ιδιότητες των ραμμάτων που χρησιμοποιούνται στην κτηνιατρική χειρουργική

Abstract

Sutures are necessary for wound healing in surgery and for ligation of vessels. Many of sutures currently available are classified according to their characteristics, such as the tensile strength, the elasticity, the plasticity, the pliability, the knot security, the memory, the capillarity, the tissue drag and the tissue reactivity. Regarding the rate of reduction of tensile strength, sutures are widely classified as absorbable, used in tissue closure that do not require long-term support, and non-absorbable, used whenever prolonged mechanical support is required. Sutures are also classified as natural or synthetic, as well as monofilament or multifilament depending on origin or structure, respectively. Sutures are available in different sizes. As suture’s size increases, increase in the tensile strength also occurs. Absorbablesutures described in this review include catgut, polydioxanone, polyglyconate, glycomer 631, polyglycolic acid, polyglactin 910, poliglecaprone 25,
polyglytone 6211 and lactomer 9-1. Non-absorbable sutures described in this review include surgical silk, cotton, nylon,polymerised caprolactam, polyester fibers, polybutester, polypropylene and stainless steel. Usually, sutures are attached to surgical needles creating a continuous unit. Needles are classified based on their shape, length, way of suture attachment and cross-section of body and point. The latter property divides needles into blunt, taper and cutting; the selection of the appropriate type is based on the tissue that has to be sutured. Sutures in modern veterinary surgery are usually available in disposable sterilized packages.